Parent State ID: 63
State Depth: 8
Action Taken: move-up-fast(fast1, n0, n4)
Action Reasoning: P2 needs to be moved to Floor 2, and fast1 is already at Floor 0 and clear. Moving fast1 up to Floor 4 to pick up P2 is efficient.
State Description: - fast0: At floor 0 (n0), 0/2 passengers.- fast1: At floor 4 (n4), 0/2 passengers, clear.- slow0-0: At floor 1 (n1), 0/1 passengers.- slow1-0: At floor 3 (n3), 0/1 passengers.- p0: On floor 1 (n1).- p1: On floor 1 (n1).- p2: On floor 4 (n4), clear.- p3: On floor 0 (n0), clear.- p4: On floor 1 (n1).- p5: On floor 2 (n2), clear.
Action Path: ['board(p5, fast1, n3, 0, 1)', 'move-down-fast(fast1, n3, n2)', 'leave(p5, fast1, n2, 1, 0)', 'move-up-fast(fast1, n2, n4)', 'board(p3, fast1, n4, 0, 1)', 'move-down-fast(fast1, n4, n0)', 'leave(p3, fast1, n0, 1, 0)', 'move-up-fast(fast1, n0, n4)']

successfully verified the action of new state 76 with the path: The last action `move-up-fast(fast1, n0, n4)` is valid as all preconditions are met, and the effects are correctly reflected in the current state. The action positions the elevator for future moves that align with the goal state. The natural language description, diagram encoding, and visualization are consistent and accurate.

INACTIVE REASON: Pruned in beam search
