[Cbc-tickets] [COIN-OR Branch-and-Cut MIP Solver] #130: Problem with Cbc and LAndP cut

[COIN-OR Branch-and-Cut MIP Solver]

#130: Problem with Cbc and LAndP cut
--------------------+-----------------
Reporter:  ycollet  |      Owner:  tkr
    Type:  defect   |     Status:  new
Priority:  major    |  Component:  Cbc
 Version:  2.7      |   Keywords:
--------------------+-----------------
 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

-- 
Ticket URL: <https://projects.coin-or.org/Cbc/ticket/130>
COIN-OR Branch-and-Cut MIP Solver <http://projects.coin-or.org/Cbc>
An LP-based branch-and-cut MIP solver.