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

Action Reasoning:
To move p4 to its goal location on floor 3 (n3) while freeing up fast0 for other transports, move this elevator with p4 from floor 1 to floor 3.

New State Description:
- fast0: Fast elevator now at floor 3 (n3), 1/2 passengers, with p4 onboard.- fast1: Fast elevator at floor 2 (n2), 0/2 passengers, available.- slow0-0: Slow elevator at floor 1 (n1), 0/1 passengers, available.- slow1-0: Slow elevator at floor 3 (n3), 0/1 passengers, available.- p0: On floor 1 (n1), not on any elevator.- p1: On floor 3 (n3), not on any elevator.- p2: On floor 2 (n2), not on any elevator.- p3: On floor 4 (n4), not on any elevator.- p4: On fast0 at floor 3 (n3).- p5: On floor 2 (n2), not on any elevator.

Action Chosen:
move-up-fast(fast0, n1, n3)
