[Scip] Why is SCIP not applying my cuts?

Daniel Karch karch at math.tu-berlin.de
Fri Feb 1 16:54:32 MET 2013


Hi,

I have written a constraint handler for precedence constrained knapsack
constraints.
When a fractional solution is available, the constraint handler looks for
violated induced cover
inequalities, and separates them as cuts.
However, the cuts are not applied. When the problem is solved, the output
shows that
e.g. 60 cuts have been found, but 0 applied.
Why is that? I am making sure that the inequalities are in fact violated by
the LP solution,
but the cuts are not applied ...

Best regards,

  Daniel
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