Parent State ID: 83
State Depth: 10
Action Taken: board(p4, fast0, n1, 1, 2)
Action Reasoning: I will board p4 onto fast0 at floor 1 since p4 needs to go to floor 3, and fast0 is currently on floor 1.
State Description: - fast0: Fast elevator at floor 1 (n1), 2/2 passengers, contains passengers p0 and p4.- fast1: Fast elevator at floor 2 (n2), 0/2 passengers, empty.- 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 board fast0 at floor 1 (n1).- p1: On floor 3 (n3).- p2: On floor 4 (n4).- p3: On floor 4 (n4).- p4: On board 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(p1, fast0, n3, 1, 0)', 'leave(p5, fast1, n2, 1, 0)', 'move-down-fast(fast0, n3, n1)', 'board(p0, fast0, n1, 0, 1)', 'board(p4, fast0, n1, 1, 2)']

successfully verified the action of new state 103 with the path: The last action `board(p4, fast0, n1, 1, 2)` is valid as all preconditions are met: `fast0` is at floor `n1`, `p4` is at floor `n1`, and `fast0` has capacity for one more passenger. The effects are correctly reflected in the current state, with `p4` on board `fast0` and the capacity updated to 2/2. The natural language description, diagram encoding, and visualization accurately represent the current state. The action helps progress towards the goal state.

INACTIVE REASON: Pruned in beam search
