[info] Using config /coreutils/mull.yml [debug] Diagnostics: Debug Mode enabled. Debug-level messages will be printed. [warning] Could not find dynamic library: libc.so.6 [info] Warm up run (threads: 1) [################################] 1/1. Finished in 108ms [info] Extracting coverage information (threads: 1) [################################] 1/1. Finished in 0ms [info] Filter mutants (threads: 1) [################################] 1/1. Finished in 0ms [info] Baseline run (threads: 1) [################################] 1/1. Finished in 108ms [info] Running mutants (threads: 20) [debug] /coreutils/src/csplit.c:342:21 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:259:19 ExecutionResult: Failed [--------------------------------] 2/154 [debug] /coreutils/src/csplit.c:413:25 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:394:7 ExecutionResult: Passed [--------------------------------] 4/154 [debug] /coreutils/src/csplit.c:358:12 ExecutionResult: Failed [#-------------------------------] 5/154 [debug] /coreutils/src/csplit.c:901:7 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:784:17 ExecutionResult: Failed [#-------------------------------] 7/154 [debug] /coreutils/src/csplit.c:920:30 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:839:3 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:533:20 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:762:17 ExecutionResult: Failed [##------------------------------] 11/154 [debug] /coreutils/src/csplit.c:640:17 ExecutionResult: Failed [##------------------------------] 12/154 [debug] /coreutils/src/csplit.c:1027:13 ExecutionResult: Failed [##------------------------------] 13/154 [debug] /coreutils/src/csplit.c:1009:17 ExecutionResult: Passed [##------------------------------] 14/154 [debug] /coreutils/src/csplit.c:571:15 ExecutionResult: Failed [###-----------------------------] 15/154 [debug] /coreutils/src/csplit.c:1097:29 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:282:19 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:822:39 ExecutionResult: Failed [###-----------------------------] 18/154 [debug] /coreutils/src/csplit.c:585:25 ExecutionResult: Failed [###-----------------------------] 19/154 [debug] /coreutils/src/csplit.c:463:9 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:345:9 ExecutionResult: Passed [####----------------------------] 21/154 [debug] /coreutils/src/csplit.c:397:3 ExecutionResult: Passed [####----------------------------] 22/154 [debug] /coreutils/src/csplit.c:907:14 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:362:9 ExecutionResult: Passed [####----------------------------] 24/154 [debug] /coreutils/src/csplit.c:483:34 ExecutionResult: Failed [#####---------------------------] 25/154 [debug] /coreutils/src/csplit.c:786:19 ExecutionResult: Failed [#####---------------------------] 26/154 [debug] /coreutils/src/csplit.c:766:29 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:921:7 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:534:18 ExecutionResult: Passed [######--------------------------] 29/154 [debug] /coreutils/src/csplit.c:842:5 ExecutionResult: Failed [######--------------------------] 30/154 [debug] /coreutils/src/csplit.c:1039:7 ExecutionResult: Failed [######--------------------------] 31/154 [debug] /coreutils/src/csplit.c:823:21 ExecutionResult: Failed [######--------------------------] 32/154 [debug] /coreutils/src/csplit.c:640:17 ExecutionResult: Failed [######--------------------------] 33/154 [debug] /coreutils/src/csplit.c:571:15 ExecutionResult: Failed [#######-------------------------] 34/154 [debug] /coreutils/src/csplit.c:1099:13 ExecutionResult: Passed [#######-------------------------] 35/154 [debug] /coreutils/src/csplit.c:398:3 ExecutionResult: Passed [#######-------------------------] 36/154 [debug] /coreutils/src/csplit.c:629:14 ExecutionResult: Failed [#######-------------------------] 37/154 [debug] /coreutils/src/csplit.c:468:13 ExecutionResult: Passed [#######-------------------------] 38/154 [debug] /coreutils/src/csplit.c:929:17 ExecutionResult: Passed [########------------------------] 39/154 [debug] /coreutils/src/csplit.c:362:33 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:791:19 ExecutionResult: Failed [########------------------------] 41/154 [debug] /coreutils/src/csplit.c:536:3 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:767:20 ExecutionResult: Failed [########------------------------] 43/154 [debug] /coreutils/src/csplit.c:916:7 ExecutionResult: Passed [#########-----------------------] 44/154 [debug] /coreutils/src/csplit.c:844:17 ExecutionResult: Passed [#########-----------------------] 45/154 [debug] /coreutils/src/csplit.c:640:27 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:1020:20 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:1039:53 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:576:19 ExecutionResult: Failed [##########----------------------] 49/154 [debug] /coreutils/src/csplit.c:348:15 ExecutionResult: Failed [##########----------------------] 50/154 [debug] /coreutils/src/csplit.c:824:15 ExecutionResult: Failed [##########----------------------] 51/154 [debug] /coreutils/src/csplit.c:485:11 ExecutionResult: Failed [##########----------------------] 52/154 [debug] /coreutils/src/csplit.c:1100:13 ExecutionResult: Failed [###########---------------------] 53/154 [debug] /coreutils/src/csplit.c:408:27 ExecutionResult: Passed [###########---------------------] 54/154 [debug] /coreutils/src/csplit.c:965:34 ExecutionResult: Failed [###########---------------------] 55/154 [debug] /coreutils/src/csplit.c:374:16 ExecutionResult: Passed [###########---------------------] 56/154 [debug] /coreutils/src/csplit.c:795:17 ExecutionResult: Failed [###########---------------------] 57/154 [debug] /coreutils/src/csplit.c:844:17 ExecutionResult: Passed [############--------------------] 58/154 [debug] /coreutils/src/csplit.c:629:16 ExecutionResult: Failed [############--------------------] 59/154 [debug] /coreutils/src/csplit.c:781:20 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:643:16 ExecutionResult: Failed [############--------------------] 61/154 [debug] /coreutils/src/csplit.c:918:16 ExecutionResult: Failed [############--------------------] 62/154 [debug] /coreutils/src/csplit.c:576:19 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:1022:29 ExecutionResult: Passed [#############-------------------] 64/154 [debug] /coreutils/src/csplit.c:489:7 ExecutionResult: Passed [#############-------------------] 65/154 [debug] /coreutils/src/csplit.c:469:13 ExecutionResult: Passed [#############-------------------] 66/154 [debug] /coreutils/src/csplit.c:1102:14 ExecutionResult: Passed [#############-------------------] 67/154 [debug] /coreutils/src/csplit.c:353:20 ExecutionResult: Failed [##############------------------] 68/154 [debug] /coreutils/src/csplit.c:411:26 ExecutionResult: Passed [##############------------------] 69/154 [debug] /coreutils/src/csplit.c:1087:8 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:824:17 ExecutionResult: Failed [##############------------------] 71/154 [debug] /coreutils/src/csplit.c:971:25 ExecutionResult: Passed [##############------------------] 72/154 [debug] /coreutils/src/csplit.c:806:29 ExecutionResult: Failed [###############-----------------] 73/154 [debug] /coreutils/src/csplit.c:782:34 ExecutionResult: Passed [###############-----------------] 74/154 [debug] /coreutils/src/csplit.c:631:34 ExecutionResult: Failed [###############-----------------] 75/154 [debug] /coreutils/src/csplit.c:375:22 ExecutionResult: Failed [###############-----------------] 76/154 [debug] /coreutils/src/csplit.c:650:9 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:503:12 ExecutionResult: Failed [################----------------] 78/154 [debug] /coreutils/src/csplit.c:1023:14 ExecutionResult: Passed [################----------------] 79/154 [debug] /coreutils/src/csplit.c:918:33 ExecutionResult: Failed [################----------------] 80/154 [debug] /coreutils/src/csplit.c:355:19 ExecutionResult: Failed [################----------------] 81/154 [debug] /coreutils/src/csplit.c:845:18 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:1104:28 ExecutionResult: Passed [#################---------------] 83/154 [debug] /coreutils/src/csplit.c:576:35 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:1093:21 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:826:19 ExecutionResult: Failed [#################---------------] 86/154 [debug] /coreutils/src/csplit.c:1002:9 ExecutionResult: Failed [##################--------------] 87/154 [debug] /coreutils/src/csplit.c:782:39 ExecutionResult: Passed [##################--------------] 88/154 [debug] /coreutils/src/csplit.c:631:34 ExecutionResult: Failed [##################--------------] 89/154 [debug] /coreutils/src/csplit.c:412:26 ExecutionResult: Passed [##################--------------] 90/154 [debug] /coreutils/src/csplit.c:1024:13 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:807:20 ExecutionResult: Failed [###################-------------] 92/154 [debug] /coreutils/src/csplit.c:919:19 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:526:7 ExecutionResult: Passed [###################-------------] 94/154 [debug] /coreutils/src/csplit.c:481:21 ExecutionResult: Failed [###################-------------] 95/154 [debug] /coreutils/src/csplit.c:1003:9 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:1097:7 ExecutionResult: Failed [####################------------] 97/154 [debug] /coreutils/src/csplit.c:831:19 ExecutionResult: Failed [####################------------] 98/154 [debug] /coreutils/src/csplit.c:375:38 ExecutionResult: Failed [####################------------] 99/154 [debug] /coreutils/src/csplit.c:753:8 ExecutionResult: Failed [####################------------] 100/154 [debug] /coreutils/src/csplit.c:1107:21 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:892:5 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:783:21 ExecutionResult: Passed [#####################-----------] 103/154 [debug] /coreutils/src/csplit.c:638:9 ExecutionResult: Failed [#####################-----------] 104/154 [debug] /coreutils/src/csplit.c:583:18 ExecutionResult: Failed [#####################-----------] 105/154 [debug] /coreutils/src/csplit.c:821:20 ExecutionResult: Failed [######################----------] 106/154 [debug] /coreutils/src/csplit.c:355:30 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:1025:21 ExecutionResult: Passed [######################----------] 108/154 [debug] /coreutils/src/csplit.c:1097:23 ExecutionResult: Failed [######################----------] 109/154 [debug] /coreutils/src/csplit.c:412:56 ExecutionResult: Passed [debug] /coreutils/src/csplit.c:920:21 ExecutionResult: Failed [#######################---------] 111/154 [debug] /coreutils/src/csplit.c:837:14 ExecutionResult: Failed [#######################---------] 112/154 [debug] /coreutils/src/csplit.c:375:57 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:892:31 ExecutionResult: Passed [#######################---------] 114/154 [debug] /coreutils/src/csplit.c:784:15 ExecutionResult: Failed [#######################---------] 115/154 [debug] /coreutils/src/csplit.c:530:12 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:638:21 ExecutionResult: Failed [########################--------] 117/154 [debug] /coreutils/src/csplit.c:1117:5 ExecutionResult: Failed [########################--------] 118/154 [debug] /coreutils/src/csplit.c:355:43 ExecutionResult: Failed [########################--------] 119/154 [debug] /coreutils/src/csplit.c:412:75 ExecutionResult: Passed [########################--------] 120/154 [debug] /coreutils/src/csplit.c:822:34 ExecutionResult: Passed [#########################-------] 121/154 [debug] /coreutils/src/csplit.c:1026:21 ExecutionResult: Passed [#########################-------] 122/154 [debug] /coreutils/src/csplit.c:757:5 ExecutionResult: Failed [#########################-------] 123/154 [debug] /coreutils/src/csplit.c:376:20 ExecutionResult: Passed [#########################-------] 124/154 [debug] /coreutils/src/csplit.c:583:28 ExecutionResult: Failed [#########################-------] 125/154 [debug] /coreutils/src/csplit.c:837:29 ExecutionResult: Failed [##########################------] 126/154 [debug] /coreutils/src/csplit.c:530:27 ExecutionResult: Passed [##########################------] 127/154 [debug] /coreutils/src/csplit.c:640:10 ExecutionResult: Failed [##########################------] 128/154 [debug] /coreutils/src/csplit.c:762:17 ExecutionResult: Passed [##########################------] 129/154 [debug] /coreutils/src/csplit.c:356:7 ExecutionResult: Failed [debug] /coreutils/src/csplit.c:585:25 ExecutionResult: Passed [###########################-----] 131/154 [debug] /coreutils/src/csplit.c:533:20 ExecutionResult: Passed [###########################-----] 132/154 [debug] /coreutils/src/csplit.c:262:13 ExecutionResult: Timedout [###########################-----] 133/154 [debug] /coreutils/src/csplit.c:283:21 ExecutionResult: Timedout [###########################-----] 134/154 [debug] /coreutils/src/csplit.c:294:3 ExecutionResult: Failed [############################----] 135/154 [debug] /coreutils/src/csplit.c:543:7 ExecutionResult: Timedout [############################----] 136/154 [debug] /coreutils/src/csplit.c:308:21 ExecutionResult: Failed [############################----] 137/154 [debug] /coreutils/src/csplit.c:543:27 ExecutionResult: Failed [############################----] 138/154 [debug] /coreutils/src/csplit.c:312:26 ExecutionResult: Failed [############################----] 139/154 [debug] /coreutils/src/csplit.c:547:27 ExecutionResult: Failed [#############################---] 140/154 [debug] /coreutils/src/csplit.c:322:34 ExecutionResult: Failed [#############################---] 141/154 [debug] /coreutils/src/csplit.c:568:12 ExecutionResult: Failed [#############################---] 142/154 [debug] /coreutils/src/csplit.c:568:27 ExecutionResult: Failed [#############################---] 143/154 [debug] /coreutils/src/csplit.c:481:24 ExecutionResult: Timedout [#############################---] 144/154 [debug] /coreutils/src/csplit.c:481:51 ExecutionResult: Passed [##############################--] 145/154 [debug] /coreutils/src/csplit.c:483:11 ExecutionResult: Failed [##############################--] 146/154 [debug] /coreutils/src/csplit.c:262:26 ExecutionResult: Timedout [##############################--] 147/154 [debug] /coreutils/src/csplit.c:264:18 ExecutionResult: Passed [##############################--] 148/154 [debug] /coreutils/src/csplit.c:265:19 ExecutionResult: Failed [##############################--] 149/154 [debug] /coreutils/src/csplit.c:267:18 ExecutionResult: Failed [###############################-] 150/154 [debug] /coreutils/src/csplit.c:267:18 ExecutionResult: Failed [###############################-] 151/154 [debug] /coreutils/src/csplit.c:281:11 ExecutionResult: Passed [###############################-] 152/154 [debug] /coreutils/src/csplit.c:323:10 ExecutionResult: Timedout [###############################-] 153/154 [debug] /coreutils/src/csplit.c:324:18 ExecutionResult: Failed [################################] 154/154. Finished in 5831ms [debug] Done running mutants [info] Survived mutants (51/154): /coreutils/src/csplit.c:264:18: warning: Survived: Replaced == with != [cxx_eq_to_ne] if (bytes_read == 0) ^ /coreutils/src/csplit.c:281:11: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] p->used = 0; ^ /coreutils/src/csplit.c:345:9: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] lines = 0; ^ /coreutils/src/csplit.c:362:9: warning: Survived: Replaced 'T a = b' with 'T a = 42' [cxx_init_const] idx_t bytes_left = buffer_end - line_start; ^ /coreutils/src/csplit.c:374:16: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] b->num_lines = lines; ^ /coreutils/src/csplit.c:376:20: warning: Survived: Replaced += with -= [cxx_add_assign_to_sub_assign] last_line_number += lines; ^ /coreutils/src/csplit.c:394:7: warning: Survived: Removed the call to the function [cxx_remove_void_call] free (l); ^ /coreutils/src/csplit.c:397:3: warning: Survived: Removed the call to the function [cxx_remove_void_call] free (buf->buffer); ^ /coreutils/src/csplit.c:398:3: warning: Survived: Removed the call to the function [cxx_remove_void_call] free (buf); ^ /coreutils/src/csplit.c:408:27: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] new_buffer->bytes_alloc = 0; ^ /coreutils/src/csplit.c:411:26: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] new_buffer->bytes_used = 0; ^ /coreutils/src/csplit.c:412:26: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] new_buffer->start_line = new_buffer->first_available = last_line_number + 1; ^ /coreutils/src/csplit.c:412:56: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] new_buffer->start_line = new_buffer->first_available = last_line_number + 1; ^ /coreutils/src/csplit.c:412:75: warning: Survived: Replaced + with - [cxx_add_to_sub] new_buffer->start_line = new_buffer->first_available = last_line_number + 1; ^ /coreutils/src/csplit.c:413:25: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] new_buffer->num_lines = 0; ^ /coreutils/src/csplit.c:463:9: warning: Survived: Replaced 'T a = b' with 'T a = 42' [cxx_init_const] idx_t bytes_wanted = MAX (START_SIZE, hold_count + 1); ^ /coreutils/src/csplit.c:468:13: warning: Survived: Replaced 'T a = b' with 'T a = 42' [cxx_init_const] idx_t bytes_alloc = b->bytes_alloc; ^ /coreutils/src/csplit.c:469:13: warning: Survived: Replaced 'T a = b' with 'T a = 42' [cxx_init_const] idx_t bytes_avail = bytes_alloc; ^ /coreutils/src/csplit.c:481:51: warning: Survived: Replaced - with + [cxx_sub_to_add] b->bytes_used += read_input (p, bytes_avail - 1); ^ /coreutils/src/csplit.c:489:7: warning: Survived: Removed the call to the function [cxx_remove_void_call] free_buffer (b); ^ /coreutils/src/csplit.c:526:7: warning: Survived: Removed the call to the function [cxx_remove_void_call] free_buffer (prev_buf); ^ /coreutils/src/csplit.c:530:27: warning: Survived: Replaced call to a function with 42 [cxx_replace_scalar_call] if (head == nullptr && !load_buffer ()) ^ /coreutils/src/csplit.c:533:20: warning: Survived: Replaced < with >= [cxx_lt_to_ge] if (current_line < head->first_available) ^ /coreutils/src/csplit.c:534:18: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] current_line = head->first_available; ^ /coreutils/src/csplit.c:576:19: warning: Survived: Replaced < with <= [cxx_lt_to_le] if (linenum < b->start_line + b->num_lines) ^ /coreutils/src/csplit.c:585:25: warning: Survived: Replaced >= with > [cxx_ge_to_gt] while (offset >= CTRL_SIZE) ^ /coreutils/src/csplit.c:762:17: warning: Survived: Replaced >= with > [cxx_ge_to_gt] if (p->offset >= 0) ^ /coreutils/src/csplit.c:782:34: warning: Survived: Replaced - with + [cxx_sub_to_add] if (line->str[line_len - 1] == '\n') ^ /coreutils/src/csplit.c:782:39: warning: Survived: Replaced == with != [cxx_eq_to_ne] if (line->str[line_len - 1] == '\n') ^ /coreutils/src/csplit.c:783:21: warning: Survived: Replaced x-- with x++ [cxx_post_dec_to_post_inc] line_len--; ^ /coreutils/src/csplit.c:822:34: warning: Survived: Replaced - with + [cxx_sub_to_add] if (line->str[line_len - 1] == '\n') ^ /coreutils/src/csplit.c:844:17: warning: Survived: Replaced > with >= [cxx_gt_to_ge] if (p->offset > 0) ^ /coreutils/src/csplit.c:844:17: warning: Survived: Replaced > with <= [cxx_gt_to_le] if (p->offset > 0) ^ /coreutils/src/csplit.c:845:18: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] current_line = break_line; ^ /coreutils/src/csplit.c:892:5: warning: Survived: Replaced call to a function with 42 [cxx_replace_scalar_call] sprintf (filename_space + strlen (prefix), "%0*d", digits, num); ^ /coreutils/src/csplit.c:892:31: warning: Survived: Replaced call to a function with 42 [cxx_replace_scalar_call] sprintf (filename_space + strlen (prefix), "%0*d", digits, num); ^ /coreutils/src/csplit.c:916:7: warning: Survived: Replaced call to a function with 42 [cxx_replace_scalar_call] sigprocmask (SIG_BLOCK, &caught_signals, &oldset); ^ /coreutils/src/csplit.c:919:19: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] fopen_errno = errno; ^ /coreutils/src/csplit.c:921:7: warning: Survived: Replaced call to a function with 42 [cxx_replace_scalar_call] sigprocmask (SIG_SETMASK, &oldset, nullptr); ^ /coreutils/src/csplit.c:929:17: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] bytes_written = 0; ^ /coreutils/src/csplit.c:971:25: warning: Survived: Replaced == with != [cxx_eq_to_ne] if (bytes_written == 0 && elide_empty_files) ^ /coreutils/src/csplit.c:1009:17: warning: Survived: Replaced += with -= [cxx_add_assign_to_sub_assign] bytes_written += line->len; ^ /coreutils/src/csplit.c:1022:29: warning: Survived: Replaced x++ with x-- [cxx_post_inc_to_post_dec] p = &controls[control_used++]; ^ /coreutils/src/csplit.c:1023:14: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] p->regexpr = false; ^ /coreutils/src/csplit.c:1024:13: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] p->repeat = 0; ^ /coreutils/src/csplit.c:1025:21: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] p->repeat_forever = false; ^ /coreutils/src/csplit.c:1026:21: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] p->lines_required = 0; ^ /coreutils/src/csplit.c:1099:13: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] p->argnum = argnum; ^ /coreutils/src/csplit.c:1102:14: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] p->regexpr = true; ^ /coreutils/src/csplit.c:1104:28: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] p->re_compiled.allocated = 0; ^ /coreutils/src/csplit.c:1107:21: warning: Survived: Replaced 'a = b' with 'a = 42' [cxx_assign_const] re_syntax_options = ^ [info] Mutation score: 66% [info] Total execution time: 6050ms [info] Surviving mutants: 51