sample_id int64 0 499 | prompt stringlengths 1.07k 1.23k | bug_type stringclasses 5 values | bug_location stringclasses 6 values | explanation stringlengths 22 37 | metadata_bug_type stringclasses 5 values | n_operations int64 4 6 | full_label stringlengths 87 107 | full_metadata stringclasses 15 values |
|---|---|---|---|---|---|---|---|---|
164 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $139: D=2600 → 2461, C=2400 → 2539
[TX002] Payment PAY1046: Transfer $165: C=2539 → 2374, D=2461 → 2626
[TX003] Transfer $112: D=2626 → 2514, E=2800 → 2912
[TX004] Payment PAY1046: Transfer $165: C=2374 → 2209, D=2514 → 2679
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1046 processed twice | DUPLICATE_TXN | 4 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1046 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 4} |
383 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1110: Transfer $150: E=2800 → 2650, B=2200 → 2350
[TX002] Transfer $157: D=2600 → 2443, C=2400 → 2557
[TX003] Transfer $158: A=2000 → 1842, C=2557 → 2715
[TX004] Transfer $158: E=2650 → 2492, B=2350 → 2508
[TX005] Transfer $141: A=1842 → 1701, D=2443 → 2584
[TX006] Payment PAY1110: Transfer $150: E=2492 → 2342, B=2508 → 2658
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX006 | Payment PAY1110 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX006", "explanation": "Payment PAY1110 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
45 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $145: D=2600 → 2455, B=2200 → 2345
[TX002] Payment PAY1009: Transfer $135: C=2400 → 2265, D=2455 → 2590
[TX003] Transfer $171: E=2800 → 2629, C=2265 → 2436
[TX004] Payment PAY1009: Transfer $135: C=2436 → 2301, D=2590 → 2725
[TX005] Transfer $110: A=2000 → 1890, C=2301 → 2411
[TX006] Transfer $162: B=2345 → 2183, E=2629 → 2791
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1009 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1009 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
156 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $129: E=2800 → 2671, D=2600 → 2729
[TX002] Transfer $144: B=2200 → 2056, E=2671 → 2815
[TX003] Credit $18: B=2056 → 2074
[TX004] Transfer $104: B=2074 → 1970, A=2000 → 2104
[TX005] Transfer $130: D=2729 → 2599, A=2104 → 2234
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
53 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $136: A=2000 → 1864, C=2400 → 2536
[TX002] Payment PAY1011: Transfer $109: C=2536 → 2427, E=2800 → 2909
[TX003] Transfer $200: B=2200 → 2000, D=2600 → 2800
[TX004] Payment PAY1011: Transfer $109: C=2427 → 2318, E=2909 → 3018
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1011 processed twice | DUPLICATE_TXN | 4 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1011 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 4} |
72 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $193: A=2000 → 1807, D=2600 → 2793
[TX002] Transfer $137: B=2200 → 2063, A=1807 → 1944
[TX003] Transfer $122: C=2400 → 2278, E=2800 → 2921
[TX004] Transfer $167: B=2063 → 1896, D=2793 → 2960
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | CALC_ERROR | TX003 | Mathematical calculation is incorrect | CALC_ERROR | 4 | {"bug_type": "CALC_ERROR", "bug_location": "TX003", "explanation": "Mathematical calculation is incorrect"} | {"bug_type": "CALC_ERROR", "n_ops": 4} |
315 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1097: Transfer $152: B=2200 → 2048, D=2600 → 2752
[TX002] Transfer $119: C=2400 → 2281, A=2000 → 2119
[TX003] Transfer $133: D=2752 → 2619, C=2281 → 2414
[TX004] Transfer $172: E=2800 → 2628, D=2619 → 2791
[TX005] Payment PAY1097: Transfer $152: B=2048 → 1896, D=2791 → 2943
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX005 | Payment PAY1097 processed twice | DUPLICATE_TXN | 5 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX005", "explanation": "Payment PAY1097 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 5} |
209 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1062: Transfer $110: A=2000 → 1890, D=2600 → 2710
[TX002] Transfer $119: E=2800 → 2681, B=2200 → 2319
[TX003] Transfer $150: E=2681 → 2531, C=2400 → 2550
[TX004] Payment PAY1062: Transfer $110: A=1890 → 1780, D=2710 → 2820
[TX005] Transfer $139: E=2531 → 2392, A=1780 → 1919
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1062 processed twice | DUPLICATE_TXN | 5 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1062 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 5} |
74 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $186: C=2400 → 2214, A=2000 → 2186
[TX002] Payment PAY1019: Transfer $103: B=2200 → 2097, E=2800 → 2903
[TX003] Transfer $178: E=2903 → 2725, C=2214 → 2392
[TX004] Payment PAY1019: Transfer $103: B=2097 → 1994, E=2725 → 2828
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1019 processed twice | DUPLICATE_TXN | 4 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1019 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 4} |
333 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $171: C=2400 → 2229, D=2600 → 2771
[TX002] Payment PAY1100: Transfer $144: E=2800 → 2656, C=2229 → 2373
[TX003] Transfer $115: A=2000 → 1885, E=2656 → 2771
[TX004] Transfer $173: C=2373 → 2200, B=2200 → 2373
[TX005] Payment PAY1100: Transfer $144: E=2771 → 2627, C=2200 → 2344
[TX006] Transfer $199: E=2627 → 2428, B=2373 → 2572
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX005 | Payment PAY1100 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX005", "explanation": "Payment PAY1100 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
403 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $178: B=2200 → 2022, E=2800 → 2978
[TX002] Transfer $142: C=2400 → 2258, D=2600 → 2742
[TX003] Transfer $196: B=2022 → 1826, A=2000 → 2194
[TX004] Transfer $111: E=2978 → 2867, B=1826 → 1937
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | CALC_ERROR | TX003 | Mathematical calculation is incorrect | CALC_ERROR | 4 | {"bug_type": "CALC_ERROR", "bug_location": "TX003", "explanation": "Mathematical calculation is incorrect"} | {"bug_type": "CALC_ERROR", "n_ops": 4} |
415 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $178: A=2000 → 1822, D=2600 → 2778
[TX002] Transfer $168: A=1822 → 1654, D=2778 → 2946
[TX003] Transfer $158: A=1654 → 1496, E=2800 → 2956
[TX004] Transfer $153: E=2958 → 2805, C=2400 → 2553
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | CALC_ERROR | TX003 | Mathematical calculation is incorrect | CALC_ERROR | 4 | {"bug_type": "CALC_ERROR", "bug_location": "TX003", "explanation": "Mathematical calculation is incorrect"} | {"bug_type": "CALC_ERROR", "n_ops": 4} |
92 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $109: E=2800 → 2691, C=2400 → 2509
[TX002] Transfer $155: D=2600 → 2445, A=2000 → 2155
[TX003] Transfer $109: A=2155 → 2046, E=2691 → 2800
[TX004] Thread conflict on C
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Concurrent update lost | LOST_UPDATE | 4 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Concurrent update lost"} | {"bug_type": "LOST_UPDATE", "n_ops": 4} |
215 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $173: C=2400 → 2227, A=2000 → 2173
[TX002] Transfer $164: C=2227 → 2063, A=2173 → 2337
[TX003] Payment PAY1065: Transfer $128: A=2337 → 2209, C=2063 → 2191
[TX004] Transfer $151: E=2800 → 2649, A=2209 → 2360
[TX005] Payment PAY1065: Transfer $128: A=2360 → 2232, C=2191 → 2319
[TX006] Transfer $136: A=2232 → 2096, E=2649 → 2785
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX005 | Payment PAY1065 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX005", "explanation": "Payment PAY1065 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
479 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $187: E=2800 → 2613, C=2400 → 2587
[TX002] Transfer $170: D=2600 → 2430, B=2200 → 2370
[TX003] Transfer $154: D=2430 → 2276, C=2587 → 2741
[TX004] Thread conflict on B
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Concurrent update lost | LOST_UPDATE | 4 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Concurrent update lost"} | {"bug_type": "LOST_UPDATE", "n_ops": 4} |
59 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ C=2400
[TX002] Thread T2: READ C=2400
[TX003] Thread T1: COMMIT C=2400 → 2238
[TX004] Thread T2: COMMIT C=2400 → 2226
[TX005] Transfer $180: A=2000 → 1820, B=2200 → 2380
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 5 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 5} |
368 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $156: E=2800 → 2644, B=2200 → 2356
[TX002] Transfer $125: A=2000 → 1875, C=2400 → 2525
[TX003] Credit $10: C=2525 → 2535
[TX004] Transfer $194: A=1875 → 1681, B=2356 → 2550
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 4 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 4} |
163 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ A=2000
[TX002] Thread T2: READ A=2000
[TX003] Thread T1: COMMIT A=2000 → 1828
[TX004] Thread T2: COMMIT A=2000 → 1888
[TX005] Transfer $150: E=2800 → 2650, B=2200 → 2350
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 5 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 5} |
210 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1063: Transfer $155: B=2200 → 2045, A=2000 → 2155
[TX002] Payment PAY1063: Transfer $155: B=2045 → 1890, A=2155 → 2310
[TX003] Transfer $178: A=2310 → 2132, E=2800 → 2978
[TX004] Transfer $139: E=2978 → 2839, A=2132 → 2271
[TX005] Transfer $101: B=1890 → 1789, A=2271 → 2372
[TX006] Transfer $120: B=1789 → 1669, A=2372 → 2492
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX002 | Payment PAY1063 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX002", "explanation": "Payment PAY1063 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
251 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $103: A=2000 → 1897, D=2600 → 2703
[TX002] Transfer $120: D=2703 → 2583, A=1897 → 2017
[TX003] Transfer $128: E=2800 → 2672, B=2200 → 2328
[TX004] Credit $44: B=2328 → 2372
[TX005] Transfer $183: B=2372 → 2189, D=2583 → 2766
[TX006] Transfer $199: D=2766 → 2567, A=2017 → 2216
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX004 | Money created from nothing | MONEY_LEAK | 6 | {"bug_type": "MONEY_LEAK", "bug_location": "TX004", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 6} |
443 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $104: C=2400 → 2296, B=2200 → 2304
[TX002] Payment PAY1127: Transfer $135: E=2800 → 2665, A=2000 → 2135
[TX003] Transfer $159: B=2304 → 2145, A=2135 → 2294
[TX004] Payment PAY1127: Transfer $135: E=2665 → 2530, A=2294 → 2429
[TX005] Transfer $121: D=2600 → 2479, E=2530 → 2651
[TX006] Transfer $137: C=2296 → 2159, B=2145 → 2282
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1127 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1127 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
320 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $120: B=2200 → 2080, A=2000 → 2120
[TX002] Transfer $199: A=2120 → 1921, D=2600 → 2799
[TX003] Transfer $185: D=2799 → 2614, C=2400 → 2585
[TX004] Credit $26: D=2614 → 2640
[TX005] Transfer $166: E=2800 → 2634, B=2080 → 2246
[TX006] Transfer $111: A=1921 → 1810, B=2246 → 2357
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX004 | Money created from nothing | MONEY_LEAK | 6 | {"bug_type": "MONEY_LEAK", "bug_location": "TX004", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 6} |
289 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $165: E=2800 → 2635, C=2400 → 2565
[TX002] Credit $29: E=2635 → 2664
[TX003] Transfer $137: D=2600 → 2463, A=2000 → 2137
[TX004] Transfer $165: B=2200 → 2035, D=2463 → 2628
[TX005] Transfer $121: A=2137 → 2016, B=2035 → 2156
[TX006] Transfer $180: E=2664 → 2484, A=2016 → 2196
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 6 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 6} |
389 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1112: Transfer $147: C=2400 → 2253, D=2600 → 2747
[TX002] Payment PAY1112: Transfer $147: C=2253 → 2106, D=2747 → 2894
[TX003] Transfer $197: D=2894 → 2697, A=2000 → 2197
[TX004] Transfer $137: D=2697 → 2560, A=2197 → 2334
[TX005] Transfer $115: D=2560 → 2445, B=2200 → 2315
[TX006] Transfer $167: C=2106 → 1939, D=2445 → 2612
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX002 | Payment PAY1112 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX002", "explanation": "Payment PAY1112 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
7 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $170: E=2800 → 2630, C=2400 → 2570
[TX002] Thread T1: READ A=2000
[TX003] Thread T2: READ A=2000
[TX004] Thread T1: COMMIT A=2000 → 1921
[TX005] Thread T2: COMMIT A=2000 → 1813
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 5 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 5} |
462 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $127: E=2800 → 2673, A=2000 → 2127
[TX002] Thread T1: READ D=2600
[TX003] Thread T2: READ D=2600
[TX004] Thread T1: COMMIT D=2600 → 2444
[TX005] Thread T2: COMMIT D=2600 → 2437
[TX006] Transfer $193: C=2400 → 2207, B=2200 → 2393
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
249 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $122: B=2200 → 2078, A=2000 → 2122
[TX002] Transfer $107: B=2078 → 1971, C=2400 → 2507
[TX003] Credit $3: B=1971 → 1974
[TX004] Transfer $146: D=2600 → 2454, A=2122 → 2268
[TX005] Transfer $147: B=1974 → 1827, D=2454 → 2601
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
228 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ B=2200
[TX002] Thread T2: READ B=2200
[TX003] Thread T1: COMMIT B=2200 → 2125
[TX004] Thread T2: COMMIT B=2200 → 2087
[TX005] Transfer $168: B=2087 → 1919, D=2600 → 2768
[TX006] Transfer $173: A=2000 → 1827, C=2400 → 2573
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
245 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1075: Transfer $200: E=2800 → 2600, A=2000 → 2200
[TX002] Payment PAY1075: Transfer $200: E=2600 → 2400, A=2200 → 2400
[TX003] Transfer $152: C=2400 → 2248, D=2600 → 2752
[TX004] Transfer $183: C=2248 → 2065, E=2400 → 2583
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX002 | Payment PAY1075 processed twice | DUPLICATE_TXN | 4 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX002", "explanation": "Payment PAY1075 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 4} |
211 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $121: E=2800 → 2679, C=2400 → 2521
[TX002] Transfer $195: C=2521 → 2326, B=2200 → 2395
[TX003] Transfer $198: C=2326 → 2128, A=2000 → 2198
[TX004] Transfer $154: A=2198 → 2044, D=2600 → 2754
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | NONE | All transactions are correct | NONE | 4 | {"bug_type": "NONE", "bug_location": "", "explanation": "All transactions are correct"} | {"bug_type": "NONE", "n_ops": 4} | |
129 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $197: D=2600 → 2403, B=2200 → 2397
[TX002] Transfer $140: C=2400 → 2260, A=2000 → 2140
[TX003] Credit $30: B=2397 → 2427
[TX004] Transfer $157: A=2140 → 1983, D=2403 → 2560
[TX005] Transfer $112: B=2427 → 2315, C=2260 → 2372
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
162 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ A=2000
[TX002] Thread T2: READ A=2000
[TX003] Thread T1: COMMIT A=2000 → 1902
[TX004] Thread T2: COMMIT A=2000 → 1800
[TX005] Transfer $161: E=2800 → 2639, B=2200 → 2361
[TX006] Transfer $138: B=2361 → 2223, D=2600 → 2738
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
223 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $151: B=2200 → 2049, A=2000 → 2151
[TX002] Transfer $112: D=2600 → 2488, B=2049 → 2161
[TX003] Transfer $117: D=2488 → 2371, A=2151 → 2268
[TX004] Thread conflict on A
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Concurrent update lost | LOST_UPDATE | 4 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Concurrent update lost"} | {"bug_type": "LOST_UPDATE", "n_ops": 4} |
41 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1008: Transfer $198: D=2600 → 2402, C=2400 → 2598
[TX002] Transfer $177: C=2598 → 2421, B=2200 → 2377
[TX003] Payment PAY1008: Transfer $198: D=2402 → 2204, C=2421 → 2619
[TX004] Transfer $199: E=2800 → 2601, A=2000 → 2199
[TX005] Transfer $113: B=2377 → 2264, D=2204 → 2317
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX003 | Payment PAY1008 processed twice | DUPLICATE_TXN | 5 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX003", "explanation": "Payment PAY1008 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 5} |
278 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $150: B=2200 → 2050, D=2600 → 2750
[TX002] Transfer $157: C=2400 → 2243, D=2750 → 2907
[TX003] Payment PAY1087: Transfer $152: B=2050 → 1898, C=2243 → 2395
[TX004] Transfer $189: E=2800 → 2611, C=2395 → 2584
[TX005] Transfer $191: E=2611 → 2420, C=2584 → 2775
[TX006] Payment PAY1087: Transfer $152: B=1898 → 1746, C=2775 → 2927
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX006 | Payment PAY1087 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX006", "explanation": "Payment PAY1087 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
21 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $132: E=2800 → 2668, D=2600 → 2732
[TX002] Thread T1: READ A=2000
[TX003] Thread T2: READ A=2000
[TX004] Thread T1: COMMIT A=2000 → 1927
[TX005] Thread T2: COMMIT A=2000 → 1842
[TX006] Transfer $100: C=2400 → 2300, A=1842 → 1942
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
434 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1123: Transfer $143: B=2200 → 2057, E=2800 → 2943
[TX002] Payment PAY1123: Transfer $143: B=2057 → 1914, E=2943 → 3086
[TX003] Transfer $115: D=2600 → 2485, C=2400 → 2515
[TX004] Transfer $141: E=3086 → 2945, B=1914 → 2055
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX002 | Payment PAY1123 processed twice | DUPLICATE_TXN | 4 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX002", "explanation": "Payment PAY1123 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 4} |
68 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $110: B=2200 → 2090, C=2400 → 2510
[TX002] Transfer $179: E=2800 → 2621, D=2600 → 2779
[TX003] Payment PAY1018: Transfer $174: B=2090 → 1916, E=2621 → 2795
[TX004] Payment PAY1018: Transfer $174: B=1916 → 1742, E=2795 → 2969
[TX005] Transfer $159: B=1742 → 1583, C=2510 → 2669
[TX006] Transfer $132: C=2669 → 2537, E=2969 → 3101
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1018 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1018 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
227 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $140: B=2200 → 2060, A=2000 → 2140
[TX002] Thread T1: READ E=2800
[TX003] Thread T2: READ E=2800
[TX004] Thread T1: COMMIT E=2800 → 2694
[TX005] Thread T2: COMMIT E=2800 → 2743
[TX006] Transfer $160: C=2400 → 2240, A=2140 → 2300
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
151 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $167: B=2200 → 2033, A=2000 → 2167
[TX002] Transfer $109: D=2600 → 2491, C=2400 → 2509
[TX003] Credit $8: E=2800 → 2808
[TX004] Transfer $173: A=2167 → 1994, C=2509 → 2682
[TX005] Transfer $121: E=2808 → 2687, B=2033 → 2154
[TX006] Transfer $114: C=2682 → 2568, E=2687 → 2801
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 6 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 6} |
369 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ C=2400
[TX002] Thread T2: READ C=2400
[TX003] Thread T1: COMMIT C=2400 → 2347
[TX004] Thread T2: COMMIT C=2400 → 2263
[TX005] Transfer $157: A=2000 → 1843, D=2600 → 2757
[TX006] Transfer $142: D=2757 → 2615, A=1843 → 1985
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
217 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $152: B=2200 → 2048, A=2000 → 2152
[TX002] Credit $15: A=2152 → 2167
[TX003] Transfer $181: E=2800 → 2619, C=2400 → 2581
[TX004] Transfer $100: A=2167 → 2067, D=2600 → 2700
[TX005] Transfer $113: D=2700 → 2587, C=2581 → 2694
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
154 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1042: Transfer $136: D=2600 → 2464, A=2000 → 2136
[TX002] Payment PAY1042: Transfer $136: D=2464 → 2328, A=2136 → 2272
[TX003] Transfer $198: D=2328 → 2130, B=2200 → 2398
[TX004] Transfer $147: B=2398 → 2251, E=2800 → 2947
[TX005] Transfer $148: D=2130 → 1982, E=2947 → 3095
[TX006] Transfer $187: D=1982 → 1795, A=2272 → 2459
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX002 | Payment PAY1042 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX002", "explanation": "Payment PAY1042 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
177 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $152: A=2000 → 1848, D=2600 → 2752
[TX002] Transfer $192: D=2752 → 2560, A=1848 → 2040
[TX003] Credit $16: E=2800 → 2816
[TX004] Transfer $187: E=2816 → 2629, B=2200 → 2387
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 4 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 4} |
397 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $167: C=2400 → 2233, B=2200 → 2367
[TX002] Transfer $114: C=2233 → 2119, B=2367 → 2481
[TX003] Transfer $199: C=2119 → 1920, A=2000 → 2199
[TX004] Thread conflict on B
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Concurrent update lost | LOST_UPDATE | 4 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Concurrent update lost"} | {"bug_type": "LOST_UPDATE", "n_ops": 4} |
139 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $166: A=2000 → 1834, C=2400 → 2566
[TX002] Transfer $184: B=2200 → 2016, D=2600 → 2784
[TX003] Credit $34: D=2784 → 2818
[TX004] Transfer $122: D=2818 → 2696, C=2566 → 2688
[TX005] Transfer $169: D=2696 → 2527, C=2688 → 2857
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
141 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $173: C=2400 → 2227, A=2000 → 2173
[TX002] Thread T1: READ E=2800
[TX003] Thread T2: READ E=2800
[TX004] Thread T1: COMMIT E=2800 → 2653
[TX005] Thread T2: COMMIT E=2800 → 2649
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 5 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 5} |
326 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ B=2200
[TX002] Thread T2: READ B=2200
[TX003] Thread T1: COMMIT B=2200 → 2059
[TX004] Thread T2: COMMIT B=2200 → 2111
[TX005] Transfer $110: A=2000 → 1890, B=2111 → 2221
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 5 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 5} |
175 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $191: B=2200 → 2009, E=2800 → 2991
[TX002] Transfer $140: B=2009 → 1869, E=2991 → 3131
[TX003] Transfer $111: C=2400 → 2289, A=2000 → 2112
[TX004] Transfer $146: C=2289 → 2143, E=3131 → 3277
[TX005] Transfer $116: C=2143 → 2027, A=2111 → 2227
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | CALC_ERROR | TX003 | Mathematical calculation is incorrect | CALC_ERROR | 5 | {"bug_type": "CALC_ERROR", "bug_location": "TX003", "explanation": "Mathematical calculation is incorrect"} | {"bug_type": "CALC_ERROR", "n_ops": 5} |
170 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $147: D=2600 → 2453, A=2000 → 2147
[TX002] Payment PAY1049: Transfer $172: D=2453 → 2281, E=2800 → 2972
[TX003] Transfer $138: B=2200 → 2062, C=2400 → 2538
[TX004] Transfer $111: A=2147 → 2036, B=2062 → 2173
[TX005] Payment PAY1049: Transfer $172: D=2281 → 2109, E=2972 → 3144
[TX006] Transfer $148: D=2109 → 1961, E=3144 → 3292
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX005 | Payment PAY1049 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX005", "explanation": "Payment PAY1049 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
88 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $100: C=2400 → 2300, D=2600 → 2700
[TX002] Transfer $172: B=2200 → 2028, C=2300 → 2472
[TX003] Credit $5: D=2700 → 2705
[TX004] Transfer $111: B=2028 → 1917, A=2000 → 2111
[TX005] Transfer $148: E=2800 → 2652, B=1917 → 2065
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
96 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $159: B=2200 → 2041, E=2800 → 2959
[TX002] Credit $49: E=2959 → 3008
[TX003] Transfer $187: E=3008 → 2821, D=2600 → 2787
[TX004] Transfer $180: E=2821 → 2641, C=2400 → 2580
[TX005] Transfer $156: C=2580 → 2424, B=2041 → 2197
[TX006] Transfer $156: A=2000 → 1844, E=2641 → 2797
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 6 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 6} |
439 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1125: Transfer $114: A=2000 → 1886, C=2400 → 2514
[TX002] Transfer $163: B=2200 → 2037, E=2800 → 2963
[TX003] Transfer $185: B=2037 → 1852, C=2514 → 2699
[TX004] Payment PAY1125: Transfer $114: A=1886 → 1772, C=2699 → 2813
[TX005] Transfer $182: A=1772 → 1590, B=1852 → 2034
[TX006] Transfer $126: C=2813 → 2687, D=2600 → 2726
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1125 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1125 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
303 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $150: D=2600 → 2450, A=2000 → 2150
[TX002] Payment PAY1093: Transfer $184: C=2400 → 2216, A=2150 → 2334
[TX003] Payment PAY1093: Transfer $184: C=2216 → 2032, A=2334 → 2518
[TX004] Transfer $196: B=2200 → 2004, C=2032 → 2228
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX003 | Payment PAY1093 processed twice | DUPLICATE_TXN | 4 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX003", "explanation": "Payment PAY1093 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 4} |
50 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $101: D=2600 → 2499, A=2000 → 2101
[TX002] Credit $19: E=2800 → 2819
[TX003] Transfer $156: D=2499 → 2343, E=2819 → 2975
[TX004] Transfer $106: C=2400 → 2294, B=2200 → 2306
[TX005] Transfer $114: C=2294 → 2180, E=2975 → 3089
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
199 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $108: D=2600 → 2492, C=2400 → 2508
[TX002] Credit $26: E=2800 → 2826
[TX003] Transfer $127: B=2200 → 2073, E=2826 → 2953
[TX004] Transfer $141: D=2492 → 2351, C=2508 → 2649
[TX005] Transfer $170: C=2649 → 2479, D=2351 → 2521
[TX006] Transfer $172: E=2953 → 2781, B=2073 → 2245
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 6 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 6} |
297 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $112: A=2000 → 1888, D=2600 → 2712
[TX002] Transfer $142: B=2200 → 2058, E=2800 → 2942
[TX003] Transfer $185: C=2400 → 2215, B=2058 → 2243
[TX004] Thread conflict on B
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Concurrent update lost | LOST_UPDATE | 4 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Concurrent update lost"} | {"bug_type": "LOST_UPDATE", "n_ops": 4} |
131 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ D=2600
[TX002] Thread T2: READ D=2600
[TX003] Thread T1: COMMIT D=2600 → 2419
[TX004] Thread T2: COMMIT D=2600 → 2431
[TX005] Transfer $163: D=2431 → 2268, C=2400 → 2563
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 5 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 5} |
120 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $171: D=2600 → 2429, E=2800 → 2971
[TX002] Transfer $199: A=2000 → 1801, D=2429 → 2630
[TX003] Transfer $178: D=2628 → 2450, B=2200 → 2378
[TX004] Transfer $125: C=2400 → 2275, E=2971 → 3096
[TX005] Transfer $109: A=1801 → 1692, C=2275 → 2384
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | CALC_ERROR | TX002 | Mathematical calculation is incorrect | CALC_ERROR | 5 | {"bug_type": "CALC_ERROR", "bug_location": "TX002", "explanation": "Mathematical calculation is incorrect"} | {"bug_type": "CALC_ERROR", "n_ops": 5} |
358 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $192: A=2000 → 1808, B=2200 → 2392
[TX002] Transfer $124: B=2392 → 2268, E=2800 → 2924
[TX003] Transfer $172: B=2268 → 2096, C=2400 → 2572
[TX004] Transfer $195: B=2096 → 1901, E=2924 → 3119
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | NONE | All transactions are correct | NONE | 4 | {"bug_type": "NONE", "bug_location": "", "explanation": "All transactions are correct"} | {"bug_type": "NONE", "n_ops": 4} | |
180 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $142: C=2400 → 2258, E=2800 → 2942
[TX002] Transfer $155: D=2600 → 2445, C=2258 → 2413
[TX003] Transfer $138: E=2942 → 2804, B=2200 → 2338
[TX004] Transfer $161: C=2413 → 2252, B=2338 → 2499
[TX005] Transfer $150: C=2252 → 2102, B=2499 → 2649
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | NONE | All transactions are correct | NONE | 5 | {"bug_type": "NONE", "bug_location": "", "explanation": "All transactions are correct"} | {"bug_type": "NONE", "n_ops": 5} | |
370 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $170: B=2200 → 2030, D=2600 → 2770
[TX002] Credit $40: D=2770 → 2810
[TX003] Transfer $148: B=2030 → 1882, A=2000 → 2148
[TX004] Transfer $132: E=2800 → 2668, A=2148 → 2280
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 4 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 4} |
37 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $162: E=2800 → 2638, B=2200 → 2362
[TX002] Transfer $155: B=2362 → 2207, D=2600 → 2755
[TX003] Transfer $149: D=2755 → 2606, A=2000 → 2149
[TX004] Credit $43: C=2400 → 2443
[TX005] Transfer $159: D=2606 → 2447, B=2207 → 2366
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX004 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX004", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
160 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $130: B=2200 → 2070, E=2800 → 2930
[TX002] Payment PAY1044: Transfer $190: B=2070 → 1880, D=2600 → 2790
[TX003] Transfer $107: B=1880 → 1773, E=2930 → 3037
[TX004] Payment PAY1044: Transfer $190: B=1773 → 1583, D=2790 → 2980
[TX005] Transfer $153: E=3037 → 2884, D=2980 → 3133
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1044 processed twice | DUPLICATE_TXN | 5 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1044 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 5} |
4 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ B=2200
[TX002] Thread T2: READ B=2200
[TX003] Thread T1: COMMIT B=2200 → 2032
[TX004] Thread T2: COMMIT B=2200 → 2053
[TX005] Transfer $187: C=2400 → 2213, B=2053 → 2240
[TX006] Transfer $129: C=2213 → 2084, A=2000 → 2129
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
93 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $114: D=2600 → 2486, C=2400 → 2514
[TX002] Payment PAY1026: Transfer $141: D=2486 → 2345, A=2000 → 2141
[TX003] Transfer $188: B=2200 → 2012, E=2800 → 2988
[TX004] Transfer $155: C=2514 → 2359, A=2141 → 2296
[TX005] Payment PAY1026: Transfer $141: D=2345 → 2204, A=2296 → 2437
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX005 | Payment PAY1026 processed twice | DUPLICATE_TXN | 5 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX005", "explanation": "Payment PAY1026 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 5} |
304 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $194: B=2200 → 2006, C=2400 → 2594
[TX002] Transfer $105: D=2600 → 2495, C=2594 → 2698
[TX003] Transfer $108: D=2495 → 2387, B=2006 → 2114
[TX004] Transfer $129: C=2699 → 2570, D=2387 → 2516
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | CALC_ERROR | TX002 | Mathematical calculation is incorrect | CALC_ERROR | 4 | {"bug_type": "CALC_ERROR", "bug_location": "TX002", "explanation": "Mathematical calculation is incorrect"} | {"bug_type": "CALC_ERROR", "n_ops": 4} |
188 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $123: D=2600 → 2477, B=2200 → 2323
[TX002] Payment PAY1054: Transfer $103: D=2477 → 2374, E=2800 → 2903
[TX003] Payment PAY1054: Transfer $103: D=2374 → 2271, E=2903 → 3006
[TX004] Transfer $157: E=3006 → 2849, B=2323 → 2480
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX003 | Payment PAY1054 processed twice | DUPLICATE_TXN | 4 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX003", "explanation": "Payment PAY1054 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 4} |
374 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $171: D=2600 → 2429, A=2000 → 2171
[TX002] Transfer $119: C=2400 → 2281, B=2200 → 2319
[TX003] Transfer $184: C=2281 → 2097, E=2800 → 2984
[TX004] Thread conflict on B
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Concurrent update lost | LOST_UPDATE | 4 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Concurrent update lost"} | {"bug_type": "LOST_UPDATE", "n_ops": 4} |
453 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $166: B=2200 → 2034, C=2400 → 2566
[TX002] Transfer $153: A=2000 → 1847, D=2600 → 2753
[TX003] Credit $9: E=2800 → 2809
[TX004] Transfer $153: D=2753 → 2600, C=2566 → 2719
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 4 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 4} |
94 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $167: E=2800 → 2633, D=2600 → 2767
[TX002] Transfer $139: A=2000 → 1861, E=2633 → 2772
[TX003] Transfer $142: C=2400 → 2258, B=2200 → 2341
[TX004] Transfer $167: A=1861 → 1694, B=2342 → 2509
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | CALC_ERROR | TX003 | Mathematical calculation is incorrect | CALC_ERROR | 4 | {"bug_type": "CALC_ERROR", "bug_location": "TX003", "explanation": "Mathematical calculation is incorrect"} | {"bug_type": "CALC_ERROR", "n_ops": 4} |
468 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $169: A=2000 → 1831, C=2400 → 2569
[TX002] Credit $21: C=2569 → 2590
[TX003] Transfer $187: C=2590 → 2403, D=2600 → 2787
[TX004] Transfer $168: C=2403 → 2235, A=1831 → 1999
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 4 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 4} |
292 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1091: Transfer $182: A=2000 → 1818, B=2200 → 2382
[TX002] Transfer $196: E=2800 → 2604, A=1818 → 2014
[TX003] Transfer $189: E=2604 → 2415, A=2014 → 2203
[TX004] Transfer $164: A=2203 → 2039, D=2600 → 2764
[TX005] Payment PAY1091: Transfer $182: A=2039 → 1857, B=2382 → 2564
[TX006] Transfer $200: A=1857 → 1657, D=2764 → 2964
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX005 | Payment PAY1091 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX005", "explanation": "Payment PAY1091 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
340 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $101: B=2200 → 2099, D=2600 → 2701
[TX002] Thread T1: READ A=2000
[TX003] Thread T2: READ A=2000
[TX004] Thread T1: COMMIT A=2000 → 1817
[TX005] Thread T2: COMMIT A=2000 → 1916
[TX006] Transfer $160: C=2400 → 2240, D=2701 → 2861
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
407 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $194: B=2200 → 2006, A=2000 → 2194
[TX002] Payment PAY1117: Transfer $114: E=2800 → 2686, D=2600 → 2714
[TX003] Transfer $141: E=2686 → 2545, D=2714 → 2855
[TX004] Payment PAY1117: Transfer $114: E=2545 → 2431, D=2855 → 2969
[TX005] Transfer $156: E=2431 → 2275, A=2194 → 2350
[TX006] Transfer $151: B=2006 → 1855, D=2969 → 3120
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1117 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1117 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
408 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $111: D=2600 → 2489, A=2000 → 2111
[TX002] Payment PAY1118: Transfer $174: B=2200 → 2026, C=2400 → 2574
[TX003] Transfer $184: A=2111 → 1927, C=2574 → 2758
[TX004] Payment PAY1118: Transfer $174: B=2026 → 1852, C=2758 → 2932
[TX005] Transfer $168: B=1852 → 1684, E=2800 → 2968
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1118 processed twice | DUPLICATE_TXN | 5 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1118 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 5} |
187 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ A=2000
[TX002] Thread T2: READ A=2000
[TX003] Thread T1: COMMIT A=2000 → 1863
[TX004] Thread T2: COMMIT A=2000 → 1923
[TX005] Transfer $166: B=2200 → 2034, C=2400 → 2566
[TX006] Transfer $142: B=2034 → 1892, C=2566 → 2708
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
334 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $148: D=2600 → 2452, A=2000 → 2148
[TX002] Thread T1: READ E=2800
[TX003] Thread T2: READ E=2800
[TX004] Thread T1: COMMIT E=2800 → 2677
[TX005] Thread T2: COMMIT E=2800 → 2632
[TX006] Transfer $181: B=2200 → 2019, C=2400 → 2581
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
213 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ E=2800
[TX002] Thread T2: READ E=2800
[TX003] Thread T1: COMMIT E=2800 → 2721
[TX004] Thread T2: COMMIT E=2800 → 2692
[TX005] Transfer $105: E=2692 → 2587, A=2000 → 2105
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 5 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 5} |
127 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $103: C=2400 → 2297, A=2000 → 2103
[TX002] Transfer $182: A=2103 → 1921, B=2200 → 2382
[TX003] Transfer $183: E=2800 → 2617, C=2297 → 2480
[TX004] Transfer $179: B=2382 → 2203, E=2617 → 2796
[TX005] Transfer $180: A=1921 → 1741, E=2796 → 2976
[TX006] Transfer $182: E=2976 → 2794, C=2480 → 2662
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | NONE | All transactions are correct | NONE | 6 | {"bug_type": "NONE", "bug_location": "", "explanation": "All transactions are correct"} | {"bug_type": "NONE", "n_ops": 6} | |
11 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $115: D=2600 → 2485, E=2800 → 2915
[TX002] Thread T1: READ B=2200
[TX003] Thread T2: READ B=2200
[TX004] Thread T1: COMMIT B=2200 → 2093
[TX005] Thread T2: COMMIT B=2200 → 2134
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 5 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 5} |
6 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $111: B=2200 → 2089, E=2800 → 2911
[TX002] Transfer $119: A=2000 → 1881, B=2089 → 2208
[TX003] Transfer $176: B=2208 → 2032, E=2911 → 3087
[TX004] Thread conflict on A
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Concurrent update lost | LOST_UPDATE | 4 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Concurrent update lost"} | {"bug_type": "LOST_UPDATE", "n_ops": 4} |
442 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $160: B=2200 → 2040, A=2000 → 2160
[TX002] Transfer $106: E=2800 → 2694, D=2600 → 2706
[TX003] Transfer $127: D=2706 → 2579, B=2040 → 2167
[TX004] Transfer $122: E=2694 → 2572, D=2579 → 2701
[TX005] Credit $24: D=2701 → 2725
[TX006] Transfer $192: B=2167 → 1975, E=2572 → 2764
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX005 | Money created from nothing | MONEY_LEAK | 6 | {"bug_type": "MONEY_LEAK", "bug_location": "TX005", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 6} |
246 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $151: B=2200 → 2049, D=2600 → 2751
[TX002] Payment PAY1076: Transfer $104: B=2049 → 1945, E=2800 → 2904
[TX003] Payment PAY1076: Transfer $104: B=1945 → 1841, E=2904 → 3008
[TX004] Transfer $188: D=2751 → 2563, C=2400 → 2588
[TX005] Transfer $195: B=1841 → 1646, A=2000 → 2195
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX003 | Payment PAY1076 processed twice | DUPLICATE_TXN | 5 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX003", "explanation": "Payment PAY1076 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 5} |
396 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $173: E=2800 → 2627, B=2200 → 2373
[TX002] Transfer $123: E=2627 → 2504, D=2600 → 2723
[TX003] Transfer $200: E=2504 → 2304, A=2000 → 2202
[TX004] Transfer $134: C=2400 → 2266, A=2200 → 2334
[TX005] Transfer $163: D=2723 → 2560, A=2334 → 2497
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | CALC_ERROR | TX003 | Mathematical calculation is incorrect | CALC_ERROR | 5 | {"bug_type": "CALC_ERROR", "bug_location": "TX003", "explanation": "Mathematical calculation is incorrect"} | {"bug_type": "CALC_ERROR", "n_ops": 5} |
425 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $198: D=2600 → 2402, C=2400 → 2598
[TX002] Credit $45: D=2402 → 2447
[TX003] Transfer $120: C=2598 → 2478, D=2447 → 2567
[TX004] Transfer $199: A=2000 → 1801, D=2567 → 2766
[TX005] Transfer $149: A=1801 → 1652, E=2800 → 2949
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
345 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $142: D=2600 → 2458, A=2000 → 2142
[TX002] Transfer $107: A=2142 → 2035, C=2400 → 2507
[TX003] Credit $50: C=2507 → 2557
[TX004] Transfer $169: D=2458 → 2289, A=2035 → 2204
[TX005] Transfer $124: D=2289 → 2165, B=2200 → 2324
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX003 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX003", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
89 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1024: Transfer $199: C=2400 → 2201, D=2600 → 2799
[TX002] Transfer $106: E=2800 → 2694, A=2000 → 2106
[TX003] Transfer $196: B=2200 → 2004, C=2201 → 2397
[TX004] Payment PAY1024: Transfer $199: C=2397 → 2198, D=2799 → 2998
[TX005] Transfer $186: E=2694 → 2508, A=2106 → 2292
[TX006] Transfer $156: A=2292 → 2136, D=2998 → 3154
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX004 | Payment PAY1024 processed twice | DUPLICATE_TXN | 6 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX004", "explanation": "Payment PAY1024 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 6} |
426 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $122: C=2400 → 2278, D=2600 → 2722
[TX002] Transfer $162: D=2722 → 2560, A=2000 → 2162
[TX003] Transfer $122: B=2200 → 2078, E=2800 → 2922
[TX004] Transfer $118: D=2560 → 2442, A=2162 → 2280
[TX005] Transfer $127: E=2922 → 2795, D=2442 → 2569
[TX006] Transfer $156: E=2795 → 2639, A=2280 → 2436
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | NONE | All transactions are correct | NONE | 6 | {"bug_type": "NONE", "bug_location": "", "explanation": "All transactions are correct"} | {"bug_type": "NONE", "n_ops": 6} | |
26 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Thread T1: READ C=2400
[TX002] Thread T2: READ C=2400
[TX003] Thread T1: COMMIT C=2400 → 2261
[TX004] Thread T2: COMMIT C=2400 → 2220
[TX005] Transfer $103: D=2600 → 2497, C=2220 → 2323
[TX006] Transfer $122: A=2000 → 1878, D=2497 → 2619
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX004 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX004", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
77 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $130: D=2600 → 2470, E=2800 → 2930
[TX002] Credit $7: C=2400 → 2407
[TX003] Transfer $107: C=2407 → 2300, D=2470 → 2577
[TX004] Transfer $124: D=2577 → 2453, C=2300 → 2424
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 4 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 4} |
184 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $113: E=2800 → 2687, A=2000 → 2113
[TX002] Transfer $121: B=2200 → 2079, D=2600 → 2721
[TX003] Transfer $172: E=2687 → 2515, A=2113 → 2285
[TX004] Credit $49: D=2721 → 2770
[TX005] Transfer $113: C=2400 → 2287, E=2515 → 2628
[TX006] Transfer $133: A=2285 → 2152, B=2079 → 2212
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX004 | Money created from nothing | MONEY_LEAK | 6 | {"bug_type": "MONEY_LEAK", "bug_location": "TX004", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 6} |
262 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $139: B=2200 → 2061, D=2600 → 2739
[TX002] Transfer $149: B=2061 → 1912, A=2000 → 2151
[TX003] Transfer $105: B=1912 → 1807, A=2149 → 2254
[TX004] Transfer $158: C=2400 → 2242, D=2739 → 2897
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | CALC_ERROR | TX002 | Mathematical calculation is incorrect | CALC_ERROR | 4 | {"bug_type": "CALC_ERROR", "bug_location": "TX002", "explanation": "Mathematical calculation is incorrect"} | {"bug_type": "CALC_ERROR", "n_ops": 4} |
207 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1061: Transfer $149: C=2400 → 2251, B=2200 → 2349
[TX002] Transfer $146: E=2800 → 2654, D=2600 → 2746
[TX003] Payment PAY1061: Transfer $149: C=2251 → 2102, B=2349 → 2498
[TX004] Transfer $197: E=2654 → 2457, B=2498 → 2695
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX003 | Payment PAY1061 processed twice | DUPLICATE_TXN | 4 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX003", "explanation": "Payment PAY1061 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 4} |
182 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Payment PAY1052: Transfer $156: D=2600 → 2444, B=2200 → 2356
[TX002] Payment PAY1052: Transfer $156: D=2444 → 2288, B=2356 → 2512
[TX003] Transfer $152: C=2400 → 2248, A=2000 → 2152
[TX004] Transfer $181: D=2288 → 2107, B=2512 → 2693
[TX005] Transfer $132: C=2248 → 2116, B=2693 → 2825
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | DUPLICATE_TXN | TX002 | Payment PAY1052 processed twice | DUPLICATE_TXN | 5 | {"bug_type": "DUPLICATE_TXN", "bug_location": "TX002", "explanation": "Payment PAY1052 processed twice"} | {"bug_type": "DUPLICATE_TXN", "n_ops": 5} |
95 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $130: C=2400 → 2270, B=2200 → 2330
[TX002] Thread T1: READ A=2000
[TX003] Thread T2: READ A=2000
[TX004] Thread T1: COMMIT A=2000 → 1913
[TX005] Thread T2: COMMIT A=2000 → 1885
[TX006] Transfer $177: B=2330 → 2153, C=2270 → 2447
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
100 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $199: D=2600 → 2401, E=2800 → 2999
[TX002] Transfer $180: C=2400 → 2220, A=2000 → 2180
[TX003] Transfer $142: C=2220 → 2078, A=2180 → 2322
[TX004] Transfer $136: A=2322 → 2186, E=2999 → 3135
[TX005] Transfer $142: C=2078 → 1936, B=2200 → 2342
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | NONE | All transactions are correct | NONE | 5 | {"bug_type": "NONE", "bug_location": "", "explanation": "All transactions are correct"} | {"bug_type": "NONE", "n_ops": 5} | |
419 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $130: D=2600 → 2470, E=2800 → 2930
[TX002] Thread T1: READ D=2470
[TX003] Thread T2: READ D=2470
[TX004] Thread T1: COMMIT D=2470 → 2378
[TX005] Thread T2: COMMIT D=2470 → 2367
[TX006] Transfer $106: E=2930 → 2824, C=2400 → 2506
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 6 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 6} |
394 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $104: D=2600 → 2496, E=2800 → 2904
[TX002] Thread T1: READ B=2200
[TX003] Thread T2: READ B=2200
[TX004] Thread T1: COMMIT B=2200 → 2027
[TX005] Thread T2: COMMIT B=2200 → 2111
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | LOST_UPDATE | TX005 | Thread T2 overwrites T1's change | LOST_UPDATE | 5 | {"bug_type": "LOST_UPDATE", "bug_location": "TX005", "explanation": "Thread T2 overwrites T1's change"} | {"bug_type": "LOST_UPDATE", "n_ops": 5} |
155 | Analyze this banking transaction log for bugs.
Each operation shows the complete state change.
INITIAL STATE:
{
"account_A": 2000,
"account_B": 2200,
"account_C": 2400,
"account_D": 2600,
"account_E": 2800,
"total": 12000
}
RULES:
1. Total money must remain constant (conservation)
2. No account can go negative
3. All calculations must be mathematically correct
TRANSACTION LOG:
[TX001] Transfer $122: C=2400 → 2278, A=2000 → 2122
[TX002] Credit $26: E=2800 → 2826
[TX003] Transfer $193: E=2826 → 2633, B=2200 → 2393
[TX004] Transfer $196: B=2393 → 2197, A=2122 → 2318
[TX005] Transfer $159: A=2318 → 2159, D=2600 → 2759
POSSIBLE BUG TYPES (choose exactly one):
- CALC_ERROR: Mathematical calculation is incorrect
- NEGATIVE_BAL: Account balance becomes negative
- LOST_UPDATE: Concurrent update causes lost transaction
- DUPLICATE_TXN: Same transaction processed multiple times
- MONEY_LEAK: Total money in system changes
- NONE: No bugs found - all transactions are correct
Identify the SINGLE bug if any exists.
Respond with ONLY a JSON object:
{"bug_type": "<type>", "bug_location": "<TX_ID>"
Your response: | MONEY_LEAK | TX002 | Money created from nothing | MONEY_LEAK | 5 | {"bug_type": "MONEY_LEAK", "bug_location": "TX002", "explanation": "Money created from nothing"} | {"bug_type": "MONEY_LEAK", "n_ops": 5} |
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