[Scip] Overly motivated presolver?

[Julian Lamberty]

> Do I understand it correctly, that if you disable all the presolvers I 
> mentioned:
> 
>  >> constraints/linear/maxprerounds = 0
>  >> presolving/dualfix/maxrounds = 0
>  >> presolving/probing/maxrounds = 0
>  >> presolving/implics/maxrounds = 0
>  >> presolving/inttobinary/maxrounds = 0
>  >> presolving/trivial/maxrounds = 0
> 
> then it works fine, but if you reenable only the "trivial" presolver, 
> then the issue appears?
> 
> 
> Timo just told me that your question raised some bell in his mind. So, 
> it may very well be that we have already fixed your bug in our current 
> development version. SCIP 1.1.0 will be released very soon, but if you 
> like, Timo can send you a prerelease immediately such that you can check 
> whether this solves the issue.
> 
> Note, however, that SCIP 1.1.0 will have some API changes, so you will 
> also have to update your code (usually, it means that some additional 
> parameters are needed for some methods; just read the CHANGELOG).
> 
> 
> Tobias
> 

It works fine until I reenable either the "trivial" or the "probing" 
presolver.

I will check the changelog and talk to Moritz again concerning the new 
SCIP version. Would be great if this issue would be solved with the new 
version.

Julian



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