Computing an IIS with the Gurobi MATLAB interface

The MATLAB interface contains a function to compute an IIS. An IIS is a subset of the constraints and variable bounds with the following properties:

  • the subsystem represented by the IIS is infeasible, and
  • if any of the constraints or bounds of the IIS is removed, the subsystem becomes feasible.
Note that an infeasible model may have multiple IISs. The one returned by Gurobi is not necessarily one of minimal cardinality. Thus, there may exist other IISs with fewer constraints or bounds.

If an IIS computation is interrupted before completion, Gurobi will internally store the best available IIS found so far.



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