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Cut generators in CPModelProto

Feature RequestMissing Feature/WrapperMissing Feature/Wrapper

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

Status: Open.

#912 In google/or-tools;

· TheCoolRob opened on Oct 30, 2018

Colab Session Crash (F0000 Error) with VRP including Time Windows on Specific Data

Help NeededModeling/Usage problemModeling/Usage problem

Lang: PythonPython wrapper issuePython wrapper issue

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

Status: Open.

#4683 In google/or-tools;

· Diaiki opened on Jun 16, 2025

Crash upon duplicate constraint name

Lang: JavaJava wrapper issueJava wrapper issue

Solver: CBC/CLPIssue specific to Coin-OR CBC/CLPIssue specific to Coin-OR CBC/CLP

Status: Open.

#4764 In google/or-tools;

· oliviercailloux opened on Sep 2, 2025

Fuzztest build is borken

Bug

Build: BazelBazel based build issueBazel based build issue

Build: CMakeCMake based build issueCMake based build issue

Lang: C++Native implementation issueNative implementation issue

Status: Open.

Bug

#4768 In google/or-tools;

· Mizux opened on Sep 3, 2025

[Windows] MSVC Compilation Error: C2001 and C2143 in multiple source files (e.g., routing_lp_scheduling.cc)

Build: CMakeCMake based build issueCMake based build issue

OS: WindowsWindows OSWindows OS

Status: Open.

#4772 In google/or-tools;

· sxfbug opened on Sep 4, 2025

Bug in Routing Solver when using amortized vehicle cost

Bug

Lang: JavaJava wrapper issueJava wrapper issue

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

Status: Open.

#3054 In google/or-tools;

· amir169 opened on Jan 2, 2022

cmake(MSVC): building ortools_full.lib is not working in Debug

Bug

Build: CMakeCMake based build issueCMake based build issue

Lang: C++Native implementation issueNative implementation issue

OS: WindowsWindows OSWindows OS

Status: Open.

#3822 In google/or-tools;

· Mizux opened on Jun 13, 2023

OR-Tools v9.9 regression: incorrect negative transit variables (with modulo > capacity) handling in heterogeneous VRP

Bug

Lang: PythonPython wrapper issuePython wrapper issue

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

Status: Open.

#4133 In google/or-tools;

· Yamp opened on Mar 15, 2024

VRP with breaks minor bug?

Bug

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

Solver: Routing - breakRouting break related issueRouting break related issue

Status: Open.

#4234 In google/or-tools;

· vuongdanghuy opened on May 14, 2024

ROUTING_OPTIMAL is not part of the documentation

Bug

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

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

Status: Open.

#4317 In google/or-tools;

· eduedix opened on Jul 18, 2024

Potential performance degradation comparing version 9.10.4067 with 9.11.4210.

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

Solver: Flatzinc

Status: Open.

Bug

#4406 In google/or-tools;

· forceoffire opened on Oct 10, 2024

Error initializing DefaultRoutingSearchParameters: default '0.5' for field operations_research.sat.SatParameters.clause_cleanup_ratio of type 1

Bug

Lang: PythonPython wrapper issuePython wrapper issue

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

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

Status: Open.

#4427 In google/or-tools;

· Jrgsto opened on Oct 29, 2024

The CP-SAT solution in VRP Routing Solver is not returned

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

Status: Open.

#4439 In google/or-tools;

· chenyw1994 opened on Nov 14, 2024

MathOpt: python_math_opt_solver_test failed on macOS and Windows

Bug

Lang: PythonPython wrapper issuePython wrapper issue

OS: MacMacOSMacOS

OS: WindowsWindows OSWindows OS

Solver: MathOptMathOpt related issueMathOpt related issue

Status: Open.

Bug

#4460 In google/or-tools;

· Mizux opened on Dec 2, 2024

Breaks add unnecessary slack at the beginning of routes // and improved support for breaks.

Help NeededModeling/Usage problemModeling/Usage problem

Lang: PythonPython wrapper issuePython wrapper issue

OS: WindowsWindows OSWindows OS

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

Solver: Routing - breakRouting break related issueRouting break related issue

Status: Open.

#4564 In google/or-tools;

· patrick-b-c opened on Feb 24, 2025

routing(.Net): Span upper bounds causing broken depot time windows

Bug

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

OS: WindowsWindows OSWindows OS

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

Status: Open.

#4573 In google/or-tools;

· AdamLithgow opened on Feb 27, 2025

cmake:python: stubgen timeout on macos intel

Bug

Build: CMakeCMake based build issueCMake based build issue

Lang: PythonPython wrapper issuePython wrapper issue

OS: MacMacOSMacOS

Status: Open.

Bug

#4540 In google/or-tools;

· Mizux opened on Feb 14, 2025

Windows CP-SAT: Significant Drop in CPU Utilization After Initial Solutions

OS: WindowsWindows OSWindows OS

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

Status: Open.

#4615 In google/or-tools;

· gregy4 opened on Mar 31, 2025

IntVarLocalSearchFilter Initialization Failure in Python

Bug

Lang: PythonPython wrapper issuePython wrapper issue

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

Status: Open.

Bug

#4623 In google/or-tools;

· celalblgn opened on Apr 13, 2025

module source tree too large error when using go get to install

Bug

Lang: GolangGolang wrapper issueGolang wrapper issue

Status: Open.

#4624 In google/or-tools;

· mckoeman opened on Apr 14, 2025

[Windows x64][VS2022][Asan] OR‑Tools build fails: LNK1189 Object count exceeds 65535 limit

Build: CMakeCMake based build issueCMake based build issue

Lang: C++Native implementation issueNative implementation issue

OS: WindowsWindows OSWindows OS

Status: Open.

#4627 In google/or-tools;

· brianGriifin114 opened on Apr 17, 2025

SetAllowedVehiclesForIndex default behavior is not what it should be.

Help NeededModeling/Usage problemModeling/Usage problem

Lang: C++Native implementation issueNative implementation issue

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

Status: Open.

#4644 In google/or-tools;

· cbartondock opened on May 7, 2025

pywraplp broken on Linux void musl

Bug

Help NeededModeling/Usage problemModeling/Usage problem

Lang: PythonPython wrapper issuePython wrapper issue

OS: LinuxGNU/Linux OSGNU/Linux OS

Status: Open.

#4736 In google/or-tools;

· voidbert opened on Jul 19, 2025

MathOpt: some cpp tests are flaky

Bug

Lang: C++Native implementation issueNative implementation issue

OS: MacMacOSMacOS

Solver: MathOptMathOpt related issueMathOpt related issue

Status: Open.

Bug

#4816 In google/or-tools;

· Mizux opened on Sep 22, 2025

Incorrect @info format

Bug

Lang: Julia

Status: Open.

#4864 In google/or-tools;

· Shizcow opened on Oct 10, 2025