Time_limit is not working

[LeoAlle]

What version of OR-Tools and what language are you using?
Version: v9.4
Language: Python

Which solver are you using (e.g. CP-SAT, Routing Solver, GLOP, BOP, Gurobi)
ROUTING SOLVER (routing_enums_pb2)

What operating system (Linux, Windows, ...) and version?
Windows 10 Home 21H2

What did you do?
I've put a time_limit of 120 seconds with this line of code:

search_parameters.time_limit.seconds = 120

When I run, it doesn't stop after that time limit and then, after a while, it crashes.

[Mizux]

If you enable the log search search_parameters.log_search = True
Did you see some solutions trace ?

usually this limit is needed/used to stop the guided local search but in your case maybe the solver can't find a first solution and continue to search until it is out of memory...

[LeoAlle]

Yes I've also tried to enable log search, but the situation remains the same.
And I've also tried to put guided local search as searching solution strategy.

[Regista6]

What's the value of routing.status()?. Probably that can give you some idea.

[LeoAlle]

It seems to stop in the line where it searches for a solution.
solution = routing.SolveWithParameters(search_parameters)
If I print the routing status just before that line it prints "0".

[Regista6]

Maybe try changing the first solution strategies or adding disjunction constraints to make nodes droppable to get at least a partial initial solution that you can feed to GLS to get a complete solution.

[LeoAlle]

I'm working on it and I will let you know. Up to now, it still doesn't work.

[LeoAlle]

I've checked the input's types and they are correct, the code is the same of the online examples. I've tried to change the first solution strategy, but the kernel dies every time I try to run it. Any suggestions?