[Scip] Using knapsack constraint in standalone solver

[Stefan Heinz]

Hi Danial,


On 09/02/2011 04:55 AM, Daniel Jensen wrote:
> Well, in answer to "why don't you," I'd never heard of CIP before, and I
> can't find any documentation about it anywhere. I'm not all that great
> with C, but as far as I can tell the search for the proper way to
> specify a knapsack constraint in CIP ends with cons_knapsack.c line 8206:
>
> #define consParseKnapsack NULL
Sorry for that. The CIP format is still a beta version.

As I said in the previous mail, SCIP should detect that your linear 
constraint is a knapsack constraint during presolving. If this is not 
the case there might be a bug in SCIP. Therefore, it would be great to 
get the LP file which makes these problems.

Best Stefan
> :(
>
> As one might therefore expect, replacing "linear" with "knapsack" in a
> CIP file which SCIP has written results in a crash when you try to read
> the file.
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