Attempt Number: 3
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
We can board passenger p2 onto fast0 at n4 because fast0 is already at n4 and can take p2 down to n2 as required. Fast0 is currently empty and has the capacity for two passengers.

New State Description:
- Elevator fast0 is at floor 4 (n4) with passenger p2, capacity 1/2.- Elevator fast1 remains at floor 1 (n1), empty, capacity 2.- Elevator slow0-0 remains at floor 0 (n0), empty, capacity 1.- Elevator slow1-0 remains at floor 2 (n2), empty, capacity 1.- Passenger p0 is on floor 0 (n0).- Passenger p1 is on floor 1 (n1).- Passenger p2 is on board fast0.- Passenger p3 is on floor 4 (n4).- Passenger p4 is on floor 1 (n1).- Passenger p5 is on floor 2 (n2).

Action Chosen:
board(p2, fast0, n4, 0, 1)
