Parent State ID: 80
State Depth: 10
Action Taken: move-up-fast(fast1, n2, n4)
Action Reasoning: To move passengers closer to their goal floors, we should focus on moving p2 and p3 from floor 4 to floor 2. Fast1 is already at floor 2 and can move up to floor 4 to pick them up.
State Description: - fast0: Fast elevator at floor 3 (n3), 0/2 passengers, empty.- fast1: Fast elevator at floor 4 (n4), 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 floor 1 (n1).- p1: On floor 3 (n3), not on fast0.- p2: On 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)', 'move-down-fast(fast1, n4, n2)', 'move-up-fast(fast1, n2, n4)']

successfully verified the action of new state 97 with the path: The last action `move-up-fast(fast1, n2, n4)` is valid as all preconditions are satisfied, and the effects are correctly updated in the current state. The current state's description and visualization accurately reflect the sequence of actions taken. The action positions the elevator for potential future moves towards the goal state.
