Originally posted by: sjayaswal

Hi,
I am running a Cplex code (in C++ Concert Technology) wherein at each iteration I need to substitute one of the earlier added constraints by a newly generated one. The constraint is lhs = -1, where lhs is the left hand side expression of the constraint. This is how I am trying to do it:

---

IloCplex cplex_IIS(model_IIS);
....
....
IloRange r1(env, -1, lhs, -1, "r1");
model_IIS.add(r1);
lhs.end();
cplex_IIS.solve();

model_IIS.remove(r1);// to remove the constraint already added

.....
.....
IloRange r1(env, -1, lhs1, -1, "r1");
model_IIS.add(r1);
lhs1.end();
cplex_IIS.solve();

---

However, although the above code successfully adds a new constraint,
it fails to remove the old constraint.
This is my first experience at removing a constraint from a model.
Can someone tell me where am I going wrong?

Thanks and Regards,
Sachin
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: SystemAdmin

Duplicate of http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14869129&tstart=0#14869129.
#CPLEXOptimizers
#DecisionOptimization