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No start values specified in MIP start

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  • Marika Karbstein
    Gurobi Staff Gurobi Staff

    The message

    No start values specified in MIP start

    implies that something is not working correctly with your MIP start. I assume you provide the start values via a file, is this correct? Do you see any log output around the line \(Read MIP start from file\) that tells what might be wrong?

    In your second approach, the output shows that the solution violates a general constraint and is actually not feasible:

    Warning: max general constraint violation (2.7081e-01) exceeds tolerance
             (possibly due to large matrix coefficient range)

    It also points to possible numerical issues (large matrix coefficient range). 
    Our Guidelines for Numerical Issues might be helpful.


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