Hi, Running glpsol on the attached file fails:
> glpsol --cpxlp debug.lp GLPSOL: GLPK LP/MIP Solver, v4.43 Parameter(s) specified in the command line: --cpxlp debug.lp Reading problem data from `debug.lp'... debug.lp:6: missing variable name CPLEX LP file processing error Reading some documentation about the cplex lp format [1], I did not find something that forbids to but "0<=0" constraints, so I am filing a bug here. Pardon me if I am wrong. FYI, cbc does not fail on it, which made me suspect a bug in glpsol, but nothing proves they are right. [1] http://lpsolve.sourceforge.net/5.5/CPLEX-format.htm Best regards, Christophe-Marie Duquesne
debug.lp
Description: Binary data
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