coin-or/Cbc

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COIN-OR Branch-and-Cut solver

Stars: 1k
Forks: 144
Open beginner issues: 0
Indexed issues: 163

Dominant language: C++
License: No license data
Last GitHub push: Jun 25, 2026
Latest indexed: Sep 15, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

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163 open issues indexed

Problem on windows platform with full paths in interfaces of Cbc, CbcSolve, Clp Open

bug

coin-or/Cbc#32 · 17 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
add a method to use CbcOrClpParam in CbcModel Open

enhancement

coin-or/Cbc#137 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add a method to set the AbcStatus of Clp via CbcModel Open

enhancement

coin-or/Cbc#146 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Wrong optimum with files from MIPLIB2010 Open

bug

coin-or/Cbc#161 · 9 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
CbcEventHandler::stop behaviour Open

bug

coin-or/Cbc#214 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Impossible to pass all-zero solution as initial feasible solution Open

bug

coin-or/Cbc#215 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
any c / java warpper interface supported, such as jcbc Open

information

coin-or/Cbc#224 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Bug in Cbc_isProvenInfeasible() and in Cbc_isProvenOptimal() functions using C API Open

bug

coin-or/Cbc#228 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Problem with root cuts when LP relaxation is integer optimal Open

bug

coin-or/Cbc#229 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CBC 2.9.7 and 2.9.9 hangs when reading LP file for MILP Open

bug

coin-or/Cbc#245 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Nonzero optimal objective value has been found, but the solution file reports objective zero Open

bug

coin-or/Cbc#246 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
abcState_ un-predefined in <ClpSimplex.hpp> Open

build

coin-or/Cbc#249 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
any more c interface test example Open

coin-or/Cbc#254 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Algorithms used by solvers Open

coin-or/Cbc#261 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reading model from stdin Open

enhancement

coin-or/Cbc#274 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Comments interfering with model Open

bug

coin-or/Cbc#275 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CBC not able to read objective function, reporting Open

bug

coin-or/Cbc#278 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Comment read as model variable and transferred to solution file Open

bug

coin-or/Cbc#279 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
mipstart: CBC can not use a feasible solution as a starting point Open

bug

coin-or/Cbc#282 · 21 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
wrong optimal solution - preprocess SOS - preprocess aggregate works fine Open

bug

coin-or/Cbc#283 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
10teams crashes Cbc with Visual Studio 2013 Open

bug

coin-or/Cbc#284 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cbc solution for v16 (VS 2019) can't load related projects due to ReleaseParallel Open

coin-or/Cbc#285 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Segfault in ClpFactorization::factorize Open

bug

coin-or/Cbc#300 · 12 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CBC gets stuck after fixing variables Open

bug

coin-or/Cbc#305 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Writing solution problem in StandAlone Cbc 2.9.9 Open

bug

coin-or/Cbc#306 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
OsiCbc is unmaintained? Open

enhancement

coin-or/Cbc#309 · 8 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Discrepancies between Cbc C interface and CbcSolver Open

enhancement

coin-or/Cbc#310 · 9 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Cbc crashes on Windows, runs ok on Linux Open

coin-or/Cbc#325 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Tracking nodes pruned by bound and by infeasibility Open

coin-or/Cbc#327 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Issue in installing CBC solver 2.3 for linux Open

coin-or/Cbc#329 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Contribution: manual page for cbc Open

coin-or/Cbc#330 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CbcMain not thread safe Open

coin-or/Cbc#332 · 18 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Branch-and-bound node incorrectly pruned by infeasibility Open

coin-or/Cbc#338 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Can not read freemps file Open

coin-or/Cbc#342 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
cbc spuriously fails with exit code -9 Open

coin-or/Cbc#345 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Problems with solution interpretation Open

coin-or/Cbc#346 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ubuntu 18.04 cbc 2.10.5 crashed with compressed file Open

coin-or/Cbc#347 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Artificial rows and columns for MIQP Open

coin-or/Cbc#349 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Feasible model classified infeasible and when provided initial solution, solver fails to improve it Open

coin-or/Cbc#461 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Misleading `OPTIMAL` solution parsed by the Coin API Open

coin-or/Cbc#353 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Solver (cbc) did not exit normally Open

coin-or/Cbc#352 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Incorrectly detects unbounded with SOS1 constraint with non-binary variable Open

coin-or/Cbc#363 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Valgrind Error Open

coin-or/Cbc#365 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
free() invalid pointer Open

coin-or/Cbc#367 · 14 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cbc_getRowPrice was removed from the C API Open

coin-or/Cbc#370 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Very slow on infeasible problem Open

coin-or/Cbc#381 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
SegFault with SOS constriaints in CBC 2.10.x Open

coin-or/Cbc#388 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
free() invalid pointer with unbounded NL files Open

coin-or/Cbc#389 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add documentation for debugging AppVeyor builds Open

coin-or/Cbc#393 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Eliminate AUTHORS file Open

coin-or/Cbc#394 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

coin-or/Cbc

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