[Coin-symphony] Retrieving solution

[Salvatore Nocella]

Hi List!

Using SYMPHONY 5.1 I've noticed a strange behaviour retrieving the
solution returned by the branch-and-bound. More in detail, I solve an
{0,1}-LP by B&B as follows:

ENV_SYM = new OsiSymSolverInterface();
ENV_SYM->loadFromCoinModel(*(CG->Model));
ENV_SYM->setObjSense(-1);
ENV_SYM->branchAndBound();


The B&B procedure correctly prints out the optimal solution value and
non-zero variables, but when I try to retrieve the solution vector as
follows

x = (double*)ENV_SYM->getColSolution();

the vector x comes out undefined (i.e., for each i, x[i] has an
undefined value, neither 0 nor 1).

Is there any error in my procedure, or what?

I'm looking forward to your replies
Goodbye, Salvatore

____________________________________
 Salvatore Nocella
 University of L'Aquila, IT