Parent State ID: 69
State Depth: 9
Action Taken: move-up-fast(fast0, n3, n4)
Action Reasoning: Moving fast0 from floor 3 to floor 4 allows us to pick up passengers p2 and p3, who need to go to floors 2 and 0, respectively, minimizing waiting time for them.
State Description: - fast0: Fast elevator at floor 4 (n4), 0/2 passengers, clear.- fast1: Fast elevator at floor 2 (n2), 0/2 passengers, clear.- slow0-0: Slow elevator at floor 1 (n1), 1/1 passengers, holding p4.- 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: Onboard slow0-0 at floor 1 (n1).- 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)', 'board(p4, slow0-0, n1, 0, 1)', 'move-up-fast(fast0, n3, n4)']

successfully verified the action of new state 87 with the path: The last action `move-up-fast(fast0, n3, n4)` is valid because all preconditions are satisfied: `fast0` was at `n3`, `n4` is above `n3`, and `fast0` can reach `n4`. The current state's description and visualization accurately reflect the effects of the action and the sequence of actions taken. All objects from the initial state are present, and their statuses are correctly visualized.

INACTIVE REASON: Pruned in beam search
