Hi, I am trying to run my Benders' Decomposition code in Cplex Concert Technology (C++) for a particular problem.

In my Master Problem, one set of variables are X[i][j][k] where i = 1...20, j = 1...20, k = 1...10.

After I solve the Master problem in the first iteration, it is able to return me the values of X[1][1][1] till X[5]2010.

However, it fails to return me the values of the remaining X[i][j][k] variables, i.e., X[6][1][1] till X202010.

It terminates with the following error message:

"ERROR: IloExtractable 531 IloNumVarI has not been extracted by IloAlgorithm 01B6

0048".

Over last 1 year, I have done extensive coding of Benders' Decomposition for various problems and I never run into such a problem.

This time, I am unable to figure out the problem in my code.

I would greatly appreciate any help.

Thanks and Regards,

Sachin

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