Re: [Help-glpk] Assertion failed: l[k] != -DBL_MAX, Error detected in file glpios02.c at line 312

[Andrew Makhorin]

> I am running GLPK 4.45 on linux SuSe10.x86_64, I recently got several
> times the followig run time error:
> 
> 
> Assertion failed: l[k] != -DBL_MAX
> Error detected in file glpios02.c at line 312
> 
> 
> I am running GLPK from python (using cvx.opt.glpk binding). What could
> be the reason for this and why is there an assertion on line 312?
> 
> 

This is a glpk internal logic error--at the specified point l[k] must
not be -DBL_MAX while it is, so the sanity check fails.

> perhaps I can just delete this assertion in the source code and
> recompile?

No, removing the assertion will not help. Don't do that.

Please (if possible) write your mip instance to a text file in mps or
cplex lp format with glp_write_mps or glp_write_lp, gzip the file, and
post it to me (not to the list). Thanks.


Andrew Makhorin