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https://projects.coin-or.org/Cbc
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[Trac #130] Problem with Cbc and LAndP cut #75

Open s-c-e opened 5 years ago

s-c-e commented 5 years ago

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I use the last version of Cbc (2.8.3, version number which is not available in the Version drop down menu). I meet the following problem under Windows (32 + 64) and linux (64). I added a LAndP cut in Cbc via CbcModel + addCutGenerator. When I start a resolution (via the Osi Layer of CBC), Cbc hangs. Here is the gdb log:

0 0x00000000011d06d0 in CoinIndexedVector::clear (this=0x0)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/CoinUtils/src/CoinIndexedVector.cpp:40

1 0x0000000000eb635d in OsiClpSolverInterface::getBInvARow (this=0x1daca10, row=63, z=0x1da3c40, slack=0x1da3f60)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Clp/src/OsiClp/OsiClpSolverInterface.cpp:5971

2 0x000000000115c9fe in LAP::CglLandPSimplex::pullTableauRow (this=0x7fffffff90f0, row=...)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cgl/src/CglLandP/CglLandPSimplex.cpp:3128

3 0x00000000011528ef in LAP::CglLandPSimplex::optimize (this=0x7fffffff90f0, row=63, cut=..., cached=..., params=...)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cgl/src/CglLandP/CglLandPSimplex.cpp:673

4 0x00000000010e8aa5 in CglLandP::generateCuts (this=0x1c92830, si=..., cs=..., info=...)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cgl/src/CglLandP/CglLandP.cpp:622

5 0x000000000136e685 in CbcCutGenerator::generateCuts (this=0x1c8de40, cs=..., fullScan=2, solver=0x1aa9b98, node=0x0)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcCutGenerator.cpp:306

6 0x000000000130b7a7 in CbcModel::serialCuts (this=0x1aa9410, theseCuts=..., node=0x0, slackCuts=..., lastNumberCuts=0)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcModel.cpp:9306

7 0x00000000013066c7 in CbcModel::solveWithCuts (this=0x1aa9410, cuts=..., numberTries=49, node=0x0)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcModel.cpp:7947

8 0x00000000012f148d in CbcModel::branchAndBound (this=0x1aa9410, doStatistics=0)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcModel.cpp:2905

9 0x0000000001276799 in OsiCbcSolverInterface::branchAndBound (this=0x1ba6460)

at /home/crystal/rmdev/MoteurRiskManager-cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/OsiCbc/OsiCbcSolverInterface.cpp:787

Best regards,

YC