SubalgebraBases core dump

[mahrud]

This has happened a few times recently, e.g.: https://github.com/Macaulay2/M2/actions/runs/11585410582/job/32254282908

2024-10-30T04:18:22.4233960Z  -- making example results for "regularityBound"
sh: line 1: 95421 Abort trap: 6           (core dumped) GC_MAXIMUM_HEAP_SIZE=400M "/Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/x86_64-Darwin-macOS-13.7/bin/M2-binary" -q --no-randomize --no-readline --silent --stop --print-width 77 -e 'needsPackage("SubalgebraBases",Reload=>true,FileName=>"/Users/runner/work/M2/M2/M2/Macaulay2/packages/SubalgebraBases.m2")' < "/var/folders/nj/wh528zms06j9t8y7bmlvpmjm0000gn/T/M2-95272-0/0___Example_co_sp__Translation_spand_sprotation_spsub-actions_spof_spthe_spadjoint_spaction_spof_sp__S__E_lp3_rp.m2" >> "/Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/common/share/doc/Macaulay2/SubalgebraBases/example-output/___Example_co_sp__Translation_spand_sprotation_spsub-actions_spof_spthe_spadjoint_spaction_spof_sp__S__E_lp3_rp.errors" 2>&1
2024-10-30T04:18:22.4248500Z 
2024-10-30T04:18:22.4261320Z  ulimit -c unlimited; ulimit -t 700; ulimit -s 8192; ulimit -n 512;  cd /var/folders/nj/wh528zms06j9t8y7bmlvpmjm0000gn/T/M2-95272-0/6-rundir/; GC_MAXIMUM_HEAP_SIZE=400M "/Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/x86_64-Darwin-macOS-13.7/bin/M2-binary" -q --no-randomize --no-readline --silent --stop --print-width 77 -e 'needsPackage("SubalgebraBases",Reload=>true,FileName=>"/Users/runner/work/M2/M2/M2/Macaulay2/packages/SubalgebraBases.m2")' <"/var/folders/nj/wh528zms06j9t8y7bmlvpmjm0000gn/T/M2-95272-0/0___Example_co_sp__Translation_spand_sprotation_spsub-actions_spof_spthe_spadjoint_spaction_spof_sp__S__E_lp3_rp.m2" >>"/Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/common/share/doc/Macaulay2/SubalgebraBases/example-output/___Example_co_sp__Translation_spand_sprotation_spsub-actions_spof_spthe_spadjoint_spaction_spof_sp__S__E_lp3_rp.errors" 2>&1
2024-10-30T04:18:22.4275020Z /Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/common/share/doc/Macaulay2/SubalgebraBases/example-output/___Example_co_sp__Translation_spand_sprotation_spsub-actions_spof_spthe_spadjoint_spaction_spof_sp__S__E_lp3_rp.errors:0:1:(3):[12]: (output file) error: Macaulay2 killed by signal 6
2024-10-30T04:18:22.4783200Z /var/folders/nj/wh528zms06j9t8y7bmlvpmjm0000gn/T/M2-95272-0/0___Example_co_sp__Translation_spand_sprotation_spsub-actions_spof_spthe_spadjoint_spaction_spof_sp__S__E_lp3_rp.m2:0:1: (input file)
2024-10-30T04:18:22.5947810Z M2: *** Error 6
2024-10-30T04:18:22.6114100Z  -- 109.236s elapsed

The error log doesn't have a stacktrace:

-- -*- M2-comint -*- hash: 7344428018540528067

i1 : gndR = QQ[(t_1..t_3)|(w_1..w_3)|(v_1..v_3), MonomialOrder => Lex];

i2 : translation := matrix {{w_1}, {w_2}, {w_3}, {t_1*w_2+t_2*w_3+v_1},
         {-t_1*w_1+t_3*w_3+v_2}, {-t_2*w_1-t_3*w_2+v_3}};

                6         1
o2 : Matrix gndR  <-- gndR

i3 : sag := sagbi transpose translation;

i4 : netList first entries gens sag

     +------------------+
o4 = |w                 |
     | 3                |
     +------------------+
     |w                 |
     | 2                |
     +------------------+
     |w                 |
     | 1                |
     +------------------+
     |t w  + t w  - v   |
     | 2 1    3 2    3  |
     +------------------+
     |t w  + t w  + v   |
     | 1 2    2 3    1  |
     +------------------+
     |t w  - t w  - v   |
     | 1 1    3 3    2  |
     +------------------+
     |w v  + w v  + w v |
     | 1 1    2 2    3 3|
     +------------------+

i5 : R = QQ[x_1..x_9, MonomialOrder => Lex];

i6 : eqns := {x_1^2+x_2^2+x_3^2-1, x_1*x_4+x_2*x_5+x_3*x_6,
         x_1*x_7+x_2*x_8+x_3*x_9, x_1*x_4+x_2*x_5+x_3*x_6,
         x_4^2+x_5^2+x_6^2-1, x_4*x_7+x_5*x_8+x_6*x_9,
         x_1*x_7+x_2*x_8+x_3*x_9, x_4*x_7+x_5*x_8+x_6*x_9,
         x_7^2+x_8^2+x_9^2-1,
         x_1*x_5*x_9-x_1*x_6*x_8-x_2*x_4*x_9+x_2*x_6*x_7+x_3*x_4*x_8-x_3*x_5*x_7-1};

i7 : sag1 = subring sagbi eqns;

Could be related to #2774.