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CP-SAT: Segmentation fault using num_workers > 4 on attached model

Status: Open.

#5292 In google/or-tools;

· wdudek13 opened on Aug 10, 2026

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

GLOP LinearProgram's GetTransposeSparseMatrix fails if not cleaned up

Status: Open.

#5276 In google/or-tools;

· discopt opened on Jul 31, 2026

·  

v10.0

CP-SAT returns INFEASIBLE with presolve enabled but OPTIMAL with presolve disabled

Status: Open.

#5274 In google/or-tools;

· KoolShow opened on Jul 28, 2026

·  

v10.0

Build errors in pybind11_protobuf with Protobuf 35.1

Build: CMakeCMake based build issueCMake based build issue

DependenciesPull requests that update a dependency filePull requests that update a dependency file

Lang: PythonPython wrapper issuePython wrapper issue

Status: Open.

#5254 In google/or-tools;

· kiefernforst opened on Jul 11, 2026

·  

v10.0 Beta

Allow compiling the dependencies as static libraries

Build: CMakeCMake based build issueCMake based build issue

Feature RequestMissing Feature/WrapperMissing Feature/Wrapper

Status: Open.

#5247 In google/or-tools;

· phillip-keldenich opened on Jul 7, 2026

·  

v10.0

Incompatibility between highspy and or-tools

Bug

Lang: PythonPython wrapper issuePython wrapper issue

Solver: HiGHSIssue specific to EDU HiGHSIssue specific to EDU HiGHS

Status: Open.

#5246 In google/or-tools;

· PTNobel opened on Jul 7, 2026

·  

v10.0

Publish free-threaded (cp313t/cp314t) wheels for macOS and Windows

Status: Open.

#5244 In google/or-tools;

· joshlk opened on Jul 5, 2026

·  

v10.0

cp_model python docs are bad

Doc: Optimization SiteIssue related to https://developers.google.com/optimization/ or Documentation in generalIssue related to https://developers.google.com/optimization/ or Documentation in general

Lang: PythonPython wrapper issuePython wrapper issue

Status: Open.

#5216 In google/or-tools;

· MartinNFuller opened on Jun 5, 2026

·  

v10.0