Parent State ID: 13
State Depth: 4
Action Taken: move-up-fast(fast0, n0, n1)
Action Reasoning: Move fast0 to floor 1 so that passengers p0, p1, and p4 can board and be transported efficiently to their target floors.
State Description: - Fast0 is at floor 1 with 0 passengers (max capacity 2).- Fast1 is at floor 2 with 0 passengers (max capacity 2).- Slow0-0 is at floor 1 with 0 passengers (max capacity 1).- Slow1-0 is at floor 3 with 0 passengers (max capacity 1).- Passenger p0 is on floor 1.- Passenger p1 is on floor 1.- Passenger p2 is on floor 4.- Passenger p3 is on floor 4.- Passenger p4 is on floor 1.- Passenger p5 is on floor 2.- Travel cost is 8 units.
Action Path: ['board(p5, fast1, n3, 0, 1)', 'move-down-fast(fast1, n3, n2)', 'leave(p5, fast1, n2, 1, 0)', 'move-up-fast(fast0, n0, n1)']

successfully verified the action of new state 28 with the path: The last action `move-up-fast(fast0, n0, n1)` is valid as all preconditions are satisfied, and the effects are correctly reflected in the current state. The natural language description, diagram encoding, and visualization accurately represent the state after the action. The action positions the elevator for potential future moves, aligning with the goal state strategy.

INACTIVE REASON: Pruned in beam search
