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Model is "Either infeasible or unbonded" reported by Gurobi, however feasible and bounded after providing with partial initial guess

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3 comments

  • Official comment
    Simranjit Kaur
    • Gurobi Staff Gurobi Staff
    This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum. Or why not try our AI Gurobot?.
  • XINWEI SHEN
    • Gurobi-versary
    • First Comment
    • First Question

    Some additional information:

    1. This is a MISOCP model;

    2. The optimization status code is 12, which means that "Optimization was terminated due to unrecoverable numerical difficulties."

    So what can I do to find the problem of the solving process and make the model solvable?

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  • Silke Horn
    • Gurobi Staff Gurobi Staff

    As you have seen yourself from the status code, the most likely explanation is that the model has numerical issues -- e.g. due to huge coefficient ranges. What are your model's coefficient statistics? (You can find them at the beginning of the log file.)

    Our Numerics Guidelines may also be helpful.

    0

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