In one of our product instance which we still support, we use the dash version -
FICO Xpress 7.0.2
Any calls that are made to the native method XPRBprob.getNumIIS() crashes the app server.
Here is the thread stack trace
Thread Stack Trace:
-- Java stack --
at com/dashoptimization/XPRBprob.getNumIIS()I(Native Method)
This also happens in Xpress-MP 2008A.1.
This occurs when the MIP status is infeasible and when we try to print the Irreducible Infeasible Set. Are the methods getNumIIS() and getIIS() deprecated ? Is there any other way to achieve this(printing IIS)? Please help us in this regard.