Originally posted by: open_ball

Hi, 

The txt file shows a part of my model and where it gives me the error. Unfortunately, I am not able to identify what the problem is.  I am also attaching the error message that I receive. When I copy and paste the code, it considers it a spam, that's why I am not able to put the code here.

Hi

can you attach .dat and .mod

so that other users could try ?

regards

Originally posted by: open_ball

Hi Alex,

I rearranged my code and am now sharing the mod and dat file here. 

Hi,

you wrote out of bounds. If you write

Constraint17:
            forall(<a, c1, c2, t> in Ytup : c2 !=  "Anchorage" && c1!= "Ship" && c2 != "Ship" ){
          sum(r in Resources : <r,a, c1, c2, t> in gtup ) (omega[r]*g[<r,a, c1, c2, t>] )  +  
          sum(e in Equipment: <e, a, c1, c2, t> in htup ) (varepsilon[e]*h[<e, a, c1, c2, t>])  
         <=  mu[a]*Y[<a, c1, c2, t>];}

for Constraint17 your model will work

regards

PS:

some useful posts at https://www.ibm.com/developerworks/community/forums/html/topic?id=1bf1f4de-b6fa-4375-a397-741e9239513e&ps=25

Originally posted by: open_ball

Hi Alex,

Thanks for your answer. So If I wrote sum(<r,a, c1, c2, t> in gtup ) (omega[r]*g[<r,a, c1, c2, t>] ) , would that also work in the same way? 

Do I need following condition in forall (c2 !=  "Anchorage" && c1!= "Ship" && c2 != "Ship") for the model to work properly? or Is it redundant?  gtup and htup do not contain those locations but Ytup does. 

Lastly, I had to wait for 7 hours to receive this error in my original model. Shouldn't have I received this earlier? Doesn't CPLEX first create the constraint sets to solve the model?

Hi,

see https://www.ibm.com/support/knowledgecenter/en/SSSA5P_12.8.0/ilog.odms.ide.help/OPL_Studio/opllangref/topics/opl_langref_formalParams_filtering.html

for explicit vs implicit slicing

I am sorry I have not enough information to explain why it took 7 hours

regards