[BUG] MIP intermitent CI failure with RINS + B&B combined

[hlinsen]

https://github.com/NVIDIA/cuopt/actions/runs/19324304437/job/55272869925?pr=584#step:11:4720

Run:

Running gtest MIP_TEST
Running main() from gmock_main.cc
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from mip_solve
[ RUN      ] mip_solve.run_small_tests

Failure:

[RINS] Numerical issue node 380. Resolving from scratch.
[RINS] Numerical issue node 508. Resolving from scratch.
[RINS] Numerical issue node 552. Resolving from scratch.
[RINS] Numerical issue node 564. Resolving from scratch.
[RINS] Explored 576 nodes in 2.55s.
[RINS] Absolute Gap -nan Objective inf Lower Bound inf
[RINS] Integer infeasible.
Time limit reached. Stopping the solver...
Explored 23443 nodes in 59.84s.
Absolute Gap 3.353756e+01 Objective 3.7907130044999997e+02 Lower Bound 3.4553374499999995e+02
timeout: the monitored command dumped core
ci/test_cpp.sh: line 49:  1578 Segmentation fault      timeout 20m "${gt}" --gtest_output=xml:"{RAPIDS_TESTS_DIR}"

[nguidotti]

The PR #591 did not fix this issue... The CI aborts after the B&B is finished, so this bug is elsewhere

[anandhkb]

Thanks Nicolas Guidotti. Marking as in progress.