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[Bug-glpk] write_freemps does not write objective function coefficients


From: Marc Goetschalckx
Subject: [Bug-glpk] write_freemps does not write objective function coefficients
Date: Wed, 4 Jul 2007 00:08:18 +0400

Trying to debug a stack error in GLPK, I am writing the problem out at 
every iteration of a column generation scheme
Initially only in the free mps format, but then also in the lp format
One major and one minor error occur:
major: write_freemps does not write the objective function coefficients, 
no column has a non-zero in the objective function
minor: write_cpxlp creates one extra variable in the bounds section that 
does not appear anywhere else in the problem statement
I have attached two files that are written at the same time in the 
algorithm (iteration 2), they illustrate the errors

Attachment: VRP8002.lp
Description: Text document

Attachment: VRP8002.mps
Description: Text document


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