[Scip] optimal solution wrong?

[Liffey1986@gmx.de]

Thanks a lot for your help.

Ina


-------- Original-Nachricht --------
> Datum: Tue, 12 Mar 2013 19:40:04 +0100
> Von: Stefan Vigerske <stefan at math.hu-berlin.de>
> An: Liffey1986 at gmx.de
> CC: scip at zib.de
> Betreff: Re: [Scip] optimal solution wrong?

> Hi,
> 
> it works for me.
> I tried SCIP 3.0.1 with CPLEX as LP solver on an OSiL translation of the 
> instance and GAMS 24.0.2 on the original .gms file with SCIP 3.0 and 
> either CPLEX and SOPLEX. Both on Linux 64bit.
> 
> If it does not work for you, please file a bugreport at
>    https://www.edom.mi.uni-erlangen.de/cgi/scipweb/submit.pl
> including information about which SCIP version you are using, on which 
> platform, which external libraries you linked into SCIP, and how you 
> feed the problem into SCIP.
> 
> Stefan
> 
> PS: 14.2031 is the value of of the initial solution, at least in case of 
> osil and gms input.
> 
> 
> On 03/12/2013 07:04 PM, Liffey1986 at gmx.de wrote:
> > Hi all,
> >
> > I just solved some instances from the MINLPLib with SCIP and compared
> the results with the best known solution that is given on the MINLPLib
> homepage to check if my results are okay.
> >
> > Just one instance (nvs16.gms) gave a strange result:
> > SCIP gives out 14.2031 as the optimal value, but the MINLPLib says
> 0.7031 is the optimal solution.
> >
> > I can't explain how this astonishing result is possible. What could be a
> possible explaination for it?
> >
> > Best,
> > Ina
> >
> >
> >
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> 
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