[Scip] scip reports optimal solution along with violated constraints

Tobias Achterberg achterberg at zib.de
Wed Mar 10 11:20:51 MET 2010


Martin,

could you please try to extract a small code example that just includes default plugins, 
creates and populates a problem, and solves it? Then, we could look at your problem setup 
code and see whether this is correct or not.


Tobias


Martin Bergner wrote:
> Hello Stefan,
>> could you please turn off the heuristic trivial and check if this helps.
>> SCIP_CALL( SCIPsetIntParam(scip, "heuristics/trivial/freq", -1) );
>
> This is interesting, the output is now:
>
>   time | node  | left  |LP iter|LP it/n| mem |mdpt |frac |vars |cons |cols |rows |cuts |confs|strbr|  dualbound   | primalbound  |  gap
> * 0.3s|     1 |     0 |     0 |     - | 200k|   0 |   - |  57 |  14 |  57 |   0 |   0 |   0 |   0 | 0.000000e+00 | 0.000000e+00 |   0.00%
>
> Note that cols is correct, rows is still 0. Any other heuristic which could be the culprit?
>
> Regards,
> Martin
>
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