[Cbc] error

[John J Forrest]

If you are not using latest stable version or trunk then please try 
upgrading and running the problem again.

You can also send me the mps file to see if I can reproduce the error.

John Forrest



Spring <springsender at yahoo.it> 
Sent by: cbc-bounces at list.coin-or.org
09/21/2007 10:01 AM

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cbc at list.coin-or.org
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Subject
[Cbc] error






Hi, 
I'm trying to solve a Binary optimization problem by using both coin-or 
cbc an glpk solver. In particular I'm using glpk to create the mps file 
for the problem and cbc to solve it.
My optimization problem is the following: I'have 30 cars and 374 park rows 
and I have to find the best parking.
I have choose to solve firstly the problem with 20 cars and all the park 
rows, I've obtained the solution and now I want to solve the problem with 
30 cars and all the rows by fixing to 1 the variables obtained like 
results with 20 cars but when I give the generated mps file to cbc I've 
the following error:
Model was imported from 
D:/workspace/OptimizationProject/info/optimizationFiles/F2cv_ProblemDescription.mps 
in 2.303 seconds
1 infeasibilities
Problem is infeasible - tightenPrimalBounds!

What's the problem?
I've solved in the same way the problem with Glpk and I've no errors.

Thanks
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