We solve this problem with a goal that uses texture measurements to heuristically choose between making resource allocation decisions or scheduling decisions. Due to the difficulty in the search, we arbitrarily limit the amount of time spent on solving to 200 seconds.

  IloNum timeLimit = 200;
  IloGoal goal = AltTextureIloGoal(env, makespan);
  IloGoal limitedGoal = IloLimitSearch(env, goal,
                                       IloTimeLimit(env,
                                                    timeLimit));

  solver.startNewSearch(limitedGoal);
  while(solver.next()) {
    solver.out() << "Solution with makespan: " 
                 << solver.getIntVar(makespan).getValue() << endl;
    solution.store(scheduler);
    solved = IloTrue;
  }

  solver.endSearch();