Parent State ID: 70
State Depth: 9
Action Taken: board(p4, fast0, n1, 0, 1)
Action Reasoning: To move closer to the goal state, we should board p4 onto fast0 at floor 1 and move it up to floor 3 where p4 needs to go. This minimizes waiting and travel costs by using the fast elevator.
State Description: - fast0: Fast elevator at floor 3 (n3), 1/2 passengers, carrying p4.- fast1: Fast elevator at floor 2 (n2), 0/2 passengers, clear.- slow0-0: Slow elevator at floor 0 (n0), 0/1 passengers, clear.- slow1-0: Slow elevator at floor 3 (n3), 0/1 passengers, clear.- p0: On floor 1 (n1).- p1: On floor 3 (n3), clear.- p2: On floor 4 (n4).- p3: On floor 4 (n4).- p4: Onboard fast0 at floor 1 (n1).- p5: On floor 2 (n2).
Action Path: ['board(p5, fast1, n3, 0, 1)', 'move-down-fast(fast1, n3, n2)', 'move-up-fast(fast0, n0, n1)', 'board(p1, fast0, n1, 0, 1)', 'move-up-fast(fast0, n1, n3)', 'leave(p5, fast1, n2, 1, 0)', 'leave(p1, fast0, n3, 1, 0)', 'move-down-slow(slow0-0, n1, n0)', 'board(p4, fast0, n1, 0, 1)']

INACTIVE REASON: deactivated because diagram generation failed or invalid action chosen: Elevator fast0 is not at floor n1, violating the precondition.
