Originally posted by: Saumya_Bhatnagar

Hi,
I am implementing a variant of RCPSP, wherein to implement the capacity constraint, I add up the amount of resource k consumed by all activities. (Partial code below). Here, k is the index of a resource, task is an IloIntervalVariable and consumption[i][j][k] is the amount of resource k consumed by this task.

 cum_resource[k]=cp.sum(cum_resource[k],cp.pulse(task,consumption[i][j][k]));
// capacity constraint
 for(int k=0;k<nbResources;k++){
       cp.add(cp.le(cum_resource[k],capacity[k]));                
 }
    
But i get the following error when calling the IloCP solve() method:
ilog.concert.IloException: Parameter 1 of function pulse is out of required range [0, 9007199254740991].

Any insight on the root cause of this error or how to resolve this would be of great help. Thanks in advance.

Originally posted by: PhilippeLaborie

Could you check what is the value of the consumption[i][j][k] quantities ? As the error says, the maximal allowed value is IntervalMax whose value is 9007199254740991.

Philippe

Originally posted by: Petr Vilím

I agree with Philippe. Isn't consumption[i][j][k] negative?

Petr

Originally posted by: Saumya_Bhatnagar

Hi Philippe,

Thanks for your reply. On further examination, indeed, some of the values were going out of range. I modified the code accordingly and it worked.

-Saumya