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

Action Reasoning:
p3 is currently on floor 4 with no nearby slow elevators available, so boarding fast1 to go to the goal floor 0 makes sense.

New State Description:
- fast0: Fast elevator at floor 3 (n3), 0/2 passengers, empty.- fast1: Fast elevator at floor 4 (n4), 1/2 passengers, with p3 on board.- slow0-0: Slow elevator at floor 1 (n1), 0/1 passengers, empty.- slow1-0: Slow elevator at floor 3 (n3), 0/1 passengers, empty.- p0: On floor 1 (n1).- p1: On floor 3 (n3).- p2: On floor 2 (n2).- p3: On board fast1.- p4: On floor 1 (n1).- p5: On floor 2 (n2).

Action Chosen:
board(p3, fast1, n4, 0, 1)
