Fails to detect upper level variables and constraints

[leon-zimmermann]

Hi,

I am currently trying to use MibS and I am not able to get it to work.
It seems like my upper level variables are not detected, this output suggests:

=======================================
Analyzing problem structure            
=======================================

Number of UL Variables: 29430
Number of LL Variables: 0
Number of UL Rows: 93180
Number of LL Rows: 0
Number of integer UL Variables: 10082
Number of integer LL Variables: 0
This instance is a mixed integer problem.
All lower level variables are binary.
Coefficient matrix of lower level variables in upper level problem is non-negative.
Coefficient matrix of upper level variables in lower level problem is non-negative.
Coefficient matrix of lower level variables in upper level problem is non-negative.

later followed by:

Alps0250I Starting search ...
loadProblem():The given matrix is empty!

First, I thought I had maybe misconfigured the .aux file, but then I tried your example from here and it the same happened.

Is this a current bug? Or am I missing something?

Thanks a lot!
Leon

[tkralphs]

My apologies for overlooking this issue until now. There was some small mistakes in the example that you pointed out. I fixed out and just tried to be sure. The correct solution is obtained. From the output, it looks like you are not using MibS 1.2.x, which is the latest stable version and is what you should use unless you specifically know you need another version. Version 1.2.1 will be released shortly.