[Soplex] Crash in polymakes SoPlex interface

[Ambros Gleixner]

Dear Lars,

Can you create an issue on github.com/scipopt/soplex?  It is easier to 
discuss there.  Please also provide a log file.

It would be good to activate SoPlex output via line 82 of the file you 
linked.

Plus have you compiled SoPlex in debug mode?  That would be the second 
thing I recommend.

Best,
Ambros


Am 13.09.22 um 18:57 schrieb Lars Kastner:
> Dear SoPlex developers,
> 
> 
> I am using SoPlex via polymake in a rather large computation and am experiencing
> spurious crashes. They come from the following line:
> https://github.com/polymake/polymake/blob/59df15ebbefadc1539fb5bf415a0d97f56125dfe/bundled/soplex/apps/polytope/src/soplex_interface.cc#L217
> where the status seems to be 'ERROR'. I added the following line
> 
> soplex.writeFileRational("debug.lp", nullptr, nullptr, nullptr);
> 
> in the polymake interface to save one of the crashing LPs, which I attached to
> this email.
> 
> I would greatly appreciate your input on how to debug this issue. Is there
> something immediately wrong with this LP or our interface?
> 
> Furthermore I am experiencing a bunch of
> EMAISM: numerical violation after disaggregating variable
> Are these something I should be worried about?
> 
> 
> Thank you and best regards,
> Lars Kastner
> 
> 
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