[Coin-discuss] seg fault while using Cbc

[John J Forrest]

Kish,

Looks as if it might be before root node even.

Send me stuff offline and I will get to it.  I have lots of changes in my
development branch so may have to get a clean copy and I am on a very slow
line most of the time.

John


                                                                           
             Kish Shen                                                     
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                                       [Coin-discuss] seg fault while      
                                       using Cbc                           
             08/14/06 12:48 AM                                             
                                                                           
                                                                           
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Hi,

I am running some tests on my interface to COIN/OSI solvers, and have run
into a
segmentation fault. The problem is a version of the MIPLIB stein15 problem.
I am
using Cbc (with a driver based on the sample2.cpp driver) and Clp  (via
OsiClpSolver) as
the linear solver.

The problem seem to happen quite soon after the root node, here is a trace
of the output
messages:
...
Coin0506I Presolve 36 (0) rows, 15 (0) columns and 120 (0) elements
Clp0000I Optimal - objective value 7
Coin0511I After Postsolve, objective 7, infeasibilities - dual 0 (0),
primal 0 (0)
Clp0006I 0  Obj 7
Clp0006I 0  Obj 7
Clp0000I Optimal - objective value 7
Cgl0004I processed model has 36 rows, 15 columns (15 integer) and 120
elements
Coin0506I Presolve 36 (0) rows, 15 (0) columns and 120 (0) elements
Clp0000I Optimal - objective value 7
Coin0511I After Postsolve, objective 7, infeasibilities - dual 0 (0),
primal 0 (0)
Cgl0004I processed model has 36 rows, 15 columns (15 integer) and 120
elements
Cbc0009I Objective coefficients multiple of 1
Segmentation fault

I guess John is most likely to look at this problem? :-) I have generated
the calls to
Osi/Cbc that reproduces this problem. Please let me know and I can send you
the code.

Thanks and cheers,

Kish Shen

program
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