[Couenne-tickets] [Couenne] #33: Counne says "tightened NLP is infeasible"

Couenne coin-trac at coin-or.org
Tue Jun 23 17:45:00 EDT 2015


#33: Counne says "tightened NLP is infeasible"
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  Reporter:  thofrei  |      Owner:  pbelotti
      Type:  defect   |     Status:  new
  Priority:  major    |  Milestone:
 Component:  Couenne  |    Version:
Resolution:           |   Keywords:  infeasible Couenne tightened NLP
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Comment (by thofrei):

 Hi Pietro

 Sorry to bother you again, but I was wondering: have you had a look at
 strong branching? Is there a bug in the solver and could you figure it
 out? Because I tried all different options you gave me with different
 versions of couenne and unfortunately still have the result with some
 cases that Ipopt can give me an optimal solution, but couenne tells me
 that it is infeasible (even with feas_tolerance 1e-2)

--
Ticket URL: <https://projects.coin-or.org/Couenne/ticket/33#comment:13>
Couenne <https://projects.coin-or.org/Couenne>
Couenne, a solver for non-convex MINLP



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