[Scip] bug in 2.0.2, fix coming soon [was: LP Error]

[Timo Berthold]

Dear all.

Since a few days a fix has been online at the SCIP homepage.
Please use the patched lp.c if you are doing column generation with
Cplex as LP solver.
All other applications of SCIP should not be affected, the pacthed and
the unpatched variant of SCIP 2.0.2 should behave identically.

Cheers,
Timo

On 09/05/11 10:50, Timo Berthold wrote:
> Dear all.
>
> This seems to be a general problem with the 2.0.2 release. We started
> testing a fix and we hope to be able to provide a patched version within
> the next days.
> Until then, we recommend to not replace your current SCIP installation
> by version 2.0.2 since it might run unstable.
>
> Sorry for any inconvenience caused by this.
>
> Best regards,
> the SCIP team
>
> On 09/05/11 09:19, Markus Leitner wrote:
>> Hi list,
>>
>> After upgrading to SCIP 2.0.2 today I am experiencing a similar LP on a 
>> similar error as Steve reported earlier today.
>> I tested several settings and instances which were ok with SCIP 2.0.1 
>> (both using cplex-12.2 as LP solver in a Branch&Price approach)
>> Error reports look similar to the one reported by Steve. I did, however, 
>> included two different ones below.
>>
>> I did some experiments and I guess the following information might help:
>> If I do disable fastmip (i.e. lp/fastmip = 0) the error does not occur 
>> any more (at least for those instances I tested so far).
>> Using scip-2.0.1 I could, however, enable fastmip ...
>>
>> Regards,
>> Markus
>>
>>
>> -------
>>
>> [src/scip/scip.c:15458] ERROR: Error <-6> in function call
>> [src/scip/scip.c:15512] ERROR: Error <-6> in function call
>> [src/scip/heur_coefdiving.c:524] Warning: Error while solving LP in 
>> Coefdiving heuristic; LP solve terminated with code <-6>
>> [src/scip/solve.c:839] ERROR: Error <-6> in function call
>> [src/scip/solve.c:1978] ERROR: Error <-6> in function call
>> [src/scip/solve.c:2700] ERROR: Error <-6> in function call
>> [src/scip/solve.c:3324] ERROR: Error <-6> in function call
>> [src/scip/scip.c:6828] ERROR: Error <-6> in function call
>>
>>
>> -----
>>
>> [src/scip/solve.c:839] ERROR: Error <-6> in function call
>> [src/scip/solve.c:1978] ERROR: Error <-6> in function call
>> [src/scip/solve.c:2700] ERROR: Error <-6> in function call
>> [src/scip/solve.c:3324] ERROR: Error <-6> in function call
>> [src/scip/scip.c:6828] ERROR: Error <-6> in function call
>>
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