Parent State ID: 110
State Depth: 12
Action Taken: board(p2, fast1, n4, 0, 1)
Action Reasoning: Passenger p0 is already on board fast0 at floor 0, which is the destination for p0. We should focus on moving passengers closer to their destinations. Since p2 and p3 are on floor 4 and need to go to lower floors, we can use fast1, which is already on floor 4, to board one of them and move down. This will help reduce waiting time and bring us closer to the goal state.
State Description: - fast0: Fast elevator at floor 0 (n0), 1/2 passengers, contains passenger p0.- fast1: Fast elevator at floor 4 (n4), 1/2 passengers, contains passenger p2.- 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 0 (n0).- p1: On floor 3 (n3).- p2: On board fast1 at floor 4 (n4).- p3: On floor 4 (n4).- p4: On 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)', 'move-down-fast(fast0, n1, n0)', 'move-up-fast(fast1, n2, n4)', 'board(p2, fast1, n4, 0, 1)']

successfully verified the action of new state 129 with the path: The action `board(p2, fast1, n4, 0, 1)` is valid as all preconditions are met: `fast1` is at `n4`, `p2` is at `n4`, and the capacity allows for boarding. The current state accurately reflects the effects of this action, and the visualization is consistent with the sequence of actions taken. The action progresses towards the goal state by preparing to move `p2` to `n2`.

INACTIVE REASON: Pruned in beam search
