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91485a4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | # ForgeBench v2 — self-verification report (publication-time)
Date: 2026-10-27 · Host: constrained sandbox (PolarFS workdir, overlay upper-layer ~full)
## 1. Schema validation — PASS
- 130/130 rows contain all 9 required fields; eval_criteria contains all 5 keys.
- task_id uniqueness: OK. target/task_scope enum values: OK.
- Cross-check: forge-1.20.1 goldens contain no `import net.neoforged*`;
neoforge-1.21.1 goldens contain no `import net.minecraftforge*` (comment mentions allowed).
- multi_file rows: context and golden_reference are dicts with project-relative paths.
## 2. Golden self-test (ast_eval --self-test semantics, in-process) — PASS 130/130
Every golden_reference evaluated against its own target profile:
- 130 passed, 0 failed, 0 penalty warnings.
- Harness upgrades applied during verification (part of the v2 harness):
a) tokenizer fallback: sources that tokenize but exceed javalang's Java-8 grammar
(records/switch expressions) are analyzed via regex imports/annotations with a
PARSE_LIMITATION info finding (no penalty; sandbox compile stays authoritative);
b) non-java resource gate (json/toml/yaml/gradle) now strips // and # comment lines
before forbidden-API matching (fixes false positives on migration comments);
c) .yml/.yaml added to resource suffixes (GitHub Actions golden in BUILD_017).
## 3. Contamination check vs SFT corpus — CLEAN
- Baseline: local package of `ComerX/forge-neoforge-sft-v2.1.0-rc1` (8,357 records,
45 jsonl files, 15 families).
- Method: normalized 8-line-window exact-match between all v2 golden files and every
SFT record text (messages + context_files), comments/blank lines dropped.
- Raw result (k=8): 4 window hits on 2 records — manual inspection shows BOTH are
idiomatic boilerplate collisions (ModDevGradle `runs{}` block; standard
AbstractContainerScreen.render override), not copied content.
- Strict result (k=12): **0 hits** → verdict CLEAN.
- Machine-readable: reports/contamination_result.json.
## 4. Docker compile gate — NOT EXECUTED (infra limitation, disclosed)
- Publication host: no guaranteed Docker daemon; memory ceiling ~4 GB < NeoForm ≥8 GB.
- Status: harness shipped as designed-not-executed. Re-verify on a ≥8 GB runner before
quoting Pass@1 numbers. Both template targets carry a MEMORY CONTRACT header.
## 5. Artifacts
- data/forgebench_v2_full.jsonl (130 rows) — SHA256 in SHA256SUMS.txt
- verification scripts: scripts/ in the publication workdir (merge_v2.py,
verify_goldens.py, contamination_check.py)
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