Segmentation fault

[mertturanli]

Hello,

I am using IpOpt 3.14.17 and Bonmin stable/1.8.

It can solve the problem but in the end I get seg. fault.

This is Ipopt version 3.14.17, running with linear solver MUMPS 5.6.2.

Number of nonzeros in equality constraint Jacobian...:        5
Number of nonzeros in inequality constraint Jacobian.:        0
Number of nonzeros in Lagrangian Hessian.............:        0

Total number of variables............................:        5
                     variables with only lower bounds:        0
                variables with lower and upper bounds:        5
                     variables with only upper bounds:        0
Total number of equality constraints.................:        3
Total number of inequality constraints...............:        0
        inequality constraints with only lower bounds:        0
   inequality constraints with lower and upper bounds:        0
        inequality constraints with only upper bounds:        0

Number of Iterations....: 4

                                   (scaled)                 (unscaled)
Objective...............:   6.0000000000000000e+00    6.0000000000000000e+00
Dual infeasibility......:   0.0000000000000000e+00    0.0000000000000000e+00
Constraint violation....:   0.0000000000000000e+00    0.0000000000000000e+00
Variable bound violation:   2.8557715816678736e-17    2.8557715816678736e-17
Complementarity.........:   0.0000000000000000e+00    0.0000000000000000e+00
Overall NLP error.......:   0.0000000000000000e+00    0.0000000000000000e+00


Number of objective function evaluations             = 5
Number of objective gradient evaluations             = 5
Number of equality constraint evaluations            = 5
Number of inequality constraint evaluations          = 0
Number of equality constraint Jacobian evaluations   = 5
Number of inequality constraint Jacobian evaluations = 0
Number of Lagrangian Hessian evaluations             = 4
Total seconds in IPOPT                               = 0.002

EXIT: Optimal Solution Found.
NLP0014I           111         OPT 6        4 0.001578

Thread 1 "mybonmin" received signal SIGSEGV, Segmentation fault.
0x00007ffff7e1c6a4 in CoinPackedMatrix::times(double const*, double*) const ()
   from /lib/x86_64-linux-gnu/libCoinUtils.so.3

GDB trace shows seg. fault in CoinUtils library matrix times operation.

Thread 1 "mybonmin" received signal SIGSEGV, Segmentation fault.
0x00007ffff7e1c6a4 in CoinPackedMatrix::times(double const*, double*) const ()
   from /lib/x86_64-linux-gnu/libCoinUtils.so.3
(gdb) bt
#0  0x00007ffff7e1c6a4 in CoinPackedMatrix::times(double const*, double*) const ()
   from /lib/x86_64-linux-gnu/libCoinUtils.so.3
#1  0x00007ffff786261a in CbcNode::chooseDynamicBranch(CbcModel*, CbcNode*, OsiSolverBranch*&, int) ()
   from /lib/x86_64-linux-gnu/libCbc.so.3.1
#2  0x00007ffff784f722 in CbcModel::chooseBranch(CbcNode*&, int, CbcNode*, OsiCuts&, bool&, CoinWarmStartBasis*, double const*, double const*, OsiSolverBranch*&) () from /lib/x86_64-linux-gnu/libCbc.so.3.1
#3  0x00007ffff7858422 in CbcModel::doOneNode(CbcModel*, CbcNode*&, CbcNode*&) ()
   from /lib/x86_64-linux-gnu/libCbc.so.3.1
#4  0x00007ffff782e771 in CbcModel::branchAndBound(int) () from /lib/x86_64-linux-gnu/libCbc.so.3.1
#5  0x00007ffff7ed6f52 in Bonmin::Bab::branchAndBound(Bonmin::BabSetupBase&) ()
   from /usr/local/lib/libbonmin.so.0
#6  0x0000555555557a5e in main ()
(gdb) 
#0  0x00007ffff7e1c6a4 in CoinPackedMatrix::times(double const*, double*) const ()
   from /lib/x86_64-linux-gnu/libCoinUtils.so.3
#1  0x00007ffff786261a in CbcNode::chooseDynamicBranch(CbcModel*, CbcNode*, OsiSolverBranch*&, int) ()
   from /lib/x86_64-linux-gnu/libCbc.so.3.1
#2  0x00007ffff784f722 in CbcModel::chooseBranch(CbcNode*&, int, CbcNode*, OsiCuts&, bool&, CoinWarmStartBasis*, double const*, double const*, OsiSolverBranch*&) () from /lib/x86_64-linux-gnu/libCbc.so.3.1
#3  0x00007ffff7858422 in CbcModel::doOneNode(CbcModel*, CbcNode*&, CbcNode*&) ()
   from /lib/x86_64-linux-gnu/libCbc.so.3.1
#4  0x00007ffff782e771 in CbcModel::branchAndBound(int) () from /lib/x86_64-linux-gnu/libCbc.so.3.1
#5  0x00007ffff7ed6f52 in Bonmin::Bab::branchAndBound(Bonmin::BabSetupBase&) ()
   from /usr/local/lib/libbonmin.so.0
#6  0x0000555555557a5e in main ()

Any ideas?

Thanks.

Regards.

[mertturanli]

I tried the optimization suite in Docker with Ubuntu focal: https://github.com/coin-or/COIN-OR-OptimizationSuite?tab=readme-ov-file

I got the same result:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7e2a5e4 in CoinPackedMatrix::times(double const*, double*) const ()
   from /lib/libCoinUtils.so.0