I have used Octopus before, and from your definition nothing seems to be wrong. I think the reason for Octopus to stop (not to crash) is waiting for objective function values, and my guess here is that you should not use the “explode tree” component. I have not run your simulation but I believe the order of the zones’ values might change each run, and when it comes to the point where it retrieves a values from an empty output, it halts. Try replacing the “explode tree” and also remove the other Octopus component.
Best,