Parent State ID: 70
State Depth: 9
Action Taken: board(p4, fast0, n1, 0, 1)
Action Reasoning: Fast0 is at floor 3 with capacity available. Since p1 needs to stay there, we can board p4 at floor 1 using fast0 to reach floor 3, getting them closer to their destination with minimal cost.
State Description: - fast0: Fast elevator at floor 3 (n3), 1/2 passengers, contains 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), clear.- p1: On floor 3 (n3), clear.- p2: On floor 4 (n4), clear.- p3: On floor 4 (n4), clear.- p4: On fast0, heading to floor 3 (n3).- p5: On floor 2 (n2), clear.
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 the required floor n1 for boarding p4.
