This method returns the diverging variable or constraint, in a case where the primal simplex algorithm has determined the problem to be infeasible.
The returned extractable is either an instance of INumVar
or an instance of IConstraint
extracted to the invoking Cplex
optimizer. It is of type INumVar
if the diverging column corresponds to a variable, or of type IConstraint
if the diverging column corresponds to the slack variable of a constraint.