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

Action Reasoning:
Passenger p2 needs to move to floor 2, and since fast0 is at floor 4 and is faster, p2 can board fast0 without filling it to capacity, optimizing speed for moving both passengers on floor 4.

New State Description:
- Elevator fast0 is at floor 4 (n4), with 1 passenger (p2), capacity 2.- Elevator fast1 remains at floor 3 (n3), 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 at floor 4 (n4).- Passenger p3 remains on floor 4 (n4).- Passenger p4 is on floor 1 (n1).- Passenger p5 remains on floor 2 (n2).

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