[Scip] assert(SCIPsetIsFeasPositive(set, rayscale));
Ambros Gleixner
gleixner at zib.de
Fri Aug 26 14:44:38 MEST 2011
Hi Sebastian,
could you try with the attached lp.c? I added some asserts to narrow
down the source of the problem.
ambros
Am 26.08.2011 14:22, schrieb Sebastian Ruther:
> Hello,
>
> I have had this error for a long time now but usually had more
> pressuring issues. However now I get stuck at this. Almost all of my
> instances produce this error.
>
> assert(SCIPsetIsFeasPositive(set, rayscale)); line 13531 in lp.c
>
> Note that I am using SCIP 2.0.0 with CPLEX 12.3.
>
> I dumped the master problem and solved it with CPLEX and that works fine.
>
> The variables are all binary (but of course they do get relaxed), all
> constraint coefficients are 1, rhs between 0 and 30 and objective
> function coefficients range from 100 to 9555.
>
> The call stack is:
>
> msvcr100d.dll!_wassert(const wchar_t * expr=0x0000000140990630,
> const wchar_t * filename=0x0000000140990610, unsigned int lineno=13531)
> Line 153 C
> binscip.exe!SCIPlpGetUnboundedSol() Line 13531 + 0x34 bytes C
> binscip.exe!SCIPlpSolveAndEval() Line 12259 + 0x1d bytes C
> > binscip.exe!SCIPsolveDiveLP() Line 15130 + 0x96 bytes C
> binscip.exe!heurExecFeaspump() Line 943 + 0x1c bytes C
> binscip.exe!SCIPheurExec() Line 396 + 0x2f bytes C
> binscip.exe!SCIPprimalHeuristics() Line 220 + 0x56 bytes C
> binscip.exe!priceAndCutLoop(const __int64 blkmem=7386848) Line
> 1600 + 0x50 bytes C
> binscip.exe!solveNodeLP(const __int64 blkmem=7386848) Line 1992 +
> 0xef bytes C
> binscip.exe!solveNode() Line 2647 + 0xef bytes C
> binscip.exe!SCIPsolveCIP(const __int64 blkmem=7386848) Line 3264
> + 0x101 bytes C
>
> binscip.exe!SCIPsolve(std::_Vector_iterator<std::_Vector_val<SCIP_Var
> *,std::allocator<SCIP_Var *> > > (__int64) scip=0x000000000031f3f0,
> unsigned int restart=0) Line 6827 + 0x11f bytes C
> binscip.exe!runSCIP(int argc=1, char * * argv=0x0000000000707a20)
> Line 264 + 0xa bytes C++
> binscip.exe!main(int argc=1, char * * argv=0x0000000000707a20)
> Line 356 + 0x14 bytes C++
> binscip.exe!__tmainCRTStartup() Line 555 + 0x19 bytes C
> binscip.exe!mainCRTStartup() Line 371 C
>
>
> Thank you for your help.
>
> Sebastian
>
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--
____________________________________________________________
Ambros M. Gleixner
Zuse Institute Berlin - Matheon - Berlin Mathematical School
http://www.zib.de/gleixner
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