Benders intermediate infeasible

[Ana Carolina Fernandes]

Hello,

I posted a message last Wednesday about an error that keeps occurring when I try to solve a big problem with Benders built in CPLEX, although I could solve it with Branch and Cut and Dynamic Cut. Do you have any explanation yet, do you need my implementation in AIMMS?

Also, is there any material with the explanation of what Dynamic Search does?

Thank you again,

Ana Carolina

[Marcel Hunting]

Hi,

It could be that for some reason the decomposition is not valid. Please check the CPLEX status file for Benders related messages. The CPLEX status file will be printed (in the log folder) after setting the following options:

- Solvers General option 'Solver listing messages' to 'All'

- CPLEX option 'MIP display' to 'Display each nth node'

Dynamic search is similar to Branch-and-Cut as explained here. Not much more is known about dynamic search.

Best regards,

Marcel Hunting

AIMMS Optimization Specialist