Attempt Number: 4
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
Passenger p4 needs to move from floor 1 to floor 3. Fast0 is already at floor 1 and can take them efficiently to floor 3. Getting passengers to their final floors quickly helps reduce total cost.

New State Description:
- Elevator fast0 is now at floor 1 (n1) with passenger p4 onboard, capacity 1/2.- Elevator fast1 remains at floor 2 (n2), empty, capacity 2.- Elevator slow0-0 remains at floor 1 (n1), 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 3 (n3).- Passenger p2 is on floor 2 (n2).- Passenger p3 is on floor 0 (n0).- Passenger p4 is on board fast0 at floor 1 (n1).- Passenger p5 is on floor 2 (n2).

Action Chosen:
board(p4, fast0, n1, 0, 1)
