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

Action Reasoning:
Move fast1 down to floor 4 to pick up p3 before moving p3 to floor 5 to achieve the goal state efficiently.

New State Description:
- fast0: At floor 2 (n2), 0/2 passengers.- fast1: At floor 4 (n4), 0/2 passengers, ready to board passengers.- slow0-0: At floor 2 (n2), 0/1 passengers.- p0: On floor 2 (n2).- p1: On floor 1 (n1).- p2: On floor 5 (n5).- p3: On floor 4 (n4).- p4: On floor 2 (n2).- p5: On floor 0 (n0).- p6: On floor 2 (n2).

Action Chosen:
(move-down-fast fast1 n5 n4)
