[Couenne-tickets] [Couenne, a solver for non-convex MINLP problems] #21: optimal solution wrong when using CPLEX as LP solver (optimal values is ok)

[Couenne, a solver for non-convex MINLP problems]

#21: optimal solution wrong when using CPLEX as LP solver (optimal values is ok)
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  Reporter:  stefan      |      Owner:  somebody
      Type:  defect      |     Status:  new
  Priority:  critical    |  Milestone:
 Component:  component1  |    Version:
Resolution:              |   Keywords:
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Comment (by pbelotti):

 Cbc and Couenne have different points of access to the problem and its
 solutions, hence it might happen that Couenne finds a solution that does
 not get saved in Cbc (this is more likely to happen) or viceversa. This is
 why solutions are compared at the end, after the branch and bound.

 It seems though that bestSolution_ contains an infeasible solution when
 using OsiCpx, if I understand your query. I have no idea why that happens.
 Could it be that OsiClp and OsiCpx have different ways to store a
 solution?

 Pietro

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Ticket URL: <https://projects.coin-or.org/ticket/21#comment:5>
Couenne, a solver for non-convex MINLP problems <https://projects.coin-or.org/Couenne>
Couenne, a solver for non-convex MINLP problems