Parent State ID: 82
State Depth: 10
Action Taken: move-down-fast(fast0, n3, n1)
Action Reasoning: Fast0 should move down to floor 1 to board passengers p0 and p4, who both need to end up on higher floors.
State Description: - fast0: Fast elevator at floor 1 (n1), 0/2 passengers, empty.- fast1: Fast elevator at floor 4 (n4), 1/2 passengers, with p2 on board.- 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 floor 1 (n1).- p1: On floor 3 (n3).- p2: On 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-up-fast(fast1, n2, n4)', 'board(p2, fast1, n4, 0, 1)', 'move-down-fast(fast0, n3, n1)']

successfully verified the action of new state 100 with the path: The action `move-down-fast(fast0, n3, n1)` is valid because all preconditions are met: `fast0` is at n3, n1 is below n3, and n1 is reachable by `fast0`. The effects are correctly reflected in the current state, and the action helps progress towards the goal state by positioning `fast0` to potentially pick up passengers p0 and p4. The natural language description and visualization of the current state are accurate and consistent with the sequence of actions taken.

INACTIVE REASON: Pruned in beam search
