[Cbc] cbc on LP not transferring status

[Matthew Galati]

The following code and example shows an issue that is showing up in DIP.

https://projects.coin-or.org/Dip/browser/trunk/Dip/bugs/main.cpp
https://projects.coin-or.org/Dip/browser/trunk/Dip/bugs/PRICE_AND_CUT_subProb_relax0.n0.c0.p0.b0.lp

It happens when CBC is used to solve an LP. It seems to solve it fine but when checking the status, it returns 0 for isProvenOptimal.



[magala at orclus71 bugs]$ ./a.out ../../build-g/Dip/examples/MILPBlock/PRICE_AND_CUT_subProb_relax0.n0.c0.p0.b0.lp
Coin Cbc and Clp Solver version 2.3.2, build Oct 27 2009
command line - cbc -log 3 -solve -quit (default strategy 1)
logLevel was changed from 1 to 3
Presolve 0 (-2) rows, 0 (-3) columns and 0 (-2) elements
Empty problem - 0 rows, 0 columns and 0 elements
Optimal - objective value 1.85108
After Postsolve, objective 1.85108, infeasibilities - dual 0 (0), primal 0 (0)
Optimal objective 1.851079952 - 0 iterations time 0.002, Presolve 0.00
Total time 0.00
cbc.isProveOptimal() = 0