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Java: MPSolver.solve() throws IllegalArgumentException for status 99 when HiGHS stops at a limit

Bug

Lang: JavaJava wrapper issueJava wrapper issue

Status: Open.

#5372 In google/or-tools;

· sebastian-orlowski opened on Sep 10, 2026

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v10.0

bazel: python 3.13 header used instead of the one defined by "@rules_python//python/cc:current_py_cc_headers"

Bug

Build: BazelBazel based build issueBazel based build issue

Lang: PythonPython wrapper issuePython wrapper issue

Status: Open.

#5370 In google/or-tools;

· Mizux opened on Sep 9, 2026

·  

v10.0 Beta

CP-SAT: SIGSEGV in CompiledCircuitConstraint::UpdateGraph when a circuit's enforcement_literal is false

Solver: CP-SAT SolverRelates to the CP-SAT solverRelates to the CP-SAT solver

Status: Open.

#5357 In google/or-tools;

· proshkin-aitkn opened on Sep 7, 2026

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v10.0

SetCoverLagrangian: stale ThreePhase() declaration, and ComputeLowerBound() segfaults if UseNumThreads() was not called

Bug

Solver: Set CoverSolver in set_cover/Solver in set_cover/

Status: Open.

#5341 In google/or-tools;

· jg-codes opened on Sep 5, 2026

·  

v10.0

Allow Dual ray extraction for infeasible LPs when solved using primal simplex in GLOP (via Mathopt)

Lang: PythonPython wrapper issuePython wrapper issue

Solver: GLOP

Status: Open.

#5310 In google/or-tools;

· krooonal opened on Aug 26, 2026

·  

v10.0

CP-SAT 9.15.6755: memory-safety regression building large models — std::bad_alloc via repr(IntVar) and heap corruption (0xC0000374) via IntVar.Proto() (works on 9.14)

Solver: CP-SAT SolverRelates to the CP-SAT solverRelates to the CP-SAT solver

Status: Open.

#5297 In google/or-tools;

· IDrei opened on Aug 19, 2026

·  

v10.0

# CP-SAT returns a false INFEASIBLE at the root (0 conflicts, 0 branches) with num_search_workers >= 10 and cp_model_presolve = false

Solver: CP-SAT SolverRelates to the CP-SAT solverRelates to the CP-SAT solver

Status: Open.

#5295 In google/or-tools;

· smoniz opened on Aug 14, 2026

·  

v10.0

CP-SAT certifies a wrong optimality proof on an all-linear model: adding one constraint lowers the certified optimum by 34% (9.15)

Bug

Solver: CP-SAT SolverRelates to the CP-SAT solverRelates to the CP-SAT solver

Status: Open.

#5293 In google/or-tools;

· jipjan opened on Aug 11, 2026

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v10.0 Beta

CP-SAT: uncaught std::out_of_range (absl::btree_map::at) in SolutionCrush::SetOrUpdateVarToDomainWithOptionalEscapeValue aborts the process during presolve

Bug

Solver: CP-SAT SolverRelates to the CP-SAT solverRelates to the CP-SAT solver

Status: Open.

#5288 In google/or-tools;

· Spira1 opened on Aug 6, 2026

·  

v10.0

Distributing or-tools with a cpython whl

Bug

Build: CMakeCMake based build issueCMake based build issue

Lang: PythonPython wrapper issuePython wrapper issue

Status: Open.

#5287 In google/or-tools;

· sjanzou opened on Aug 6, 2026

·  

v10.0

AddDimensionWithVehicleTransitAndCapacity returns no solution with optional nodes when capacity requires dropping visits

Help NeededModeling/Usage problemModeling/Usage problem

Lang: .NET.Net wrapper issue.Net wrapper issue

Solver: RoutingUses the Routing library and the original CP solverUses the Routing library and the original CP solver

Status: Open.

#5283 In google/or-tools;

· hjongit opened on Aug 3, 2026

·  

v10.0

[BUG] set_cover Python: integer focus overloads are unreachable, and a bool in_focus mask crashes GreedySolutionGenerator on a fresh invariant

Status: Open.

#5278 In google/or-tools;

· jg-codes opened on Aug 1, 2026

·  

v10.0