Parent State ID: 9
State Depth: 3
Action Taken: move-up-slow(slow1-0, n3, n4)
Action Reasoning: To work towards the goal, we can move slow1-0 up to floor 4. This will allow us to later board passengers p2 and p3, who need to move to lower floors.
State Description: fast0 is at floor 0 (n0), with 0 passengers. fast1 is at floor 3 (n3), with 0 passengers. slow0-0 is at floor 0 (n0), with passenger p0 onboard, 1/1 capacity. slow1-0 is now at floor 4 (n4), with 0 passengers and can hold 1 passenger. p0 is onboard slow0-0. p1 is on floor 1 (n1). p2 is on floor 4 (n4). p3 is on floor 4 (n4). p4 is on floor 1 (n1). p5 is on floor 3 (n3).
Action Path: ['board(p0, slow0-0, n1, 0, 1)', 'move-down-slow(slow0-0, n1, n0)', 'move-up-slow(slow1-0, n3, n4)']

successfully verified the action of new state 18 with the path: The last action `move-up-slow(slow1-0, n3, n4)` is valid because all preconditions are satisfied: the elevator was at n3, n4 is above n3, and the elevator can reach n4. The effects are correctly updated in the current state. The natural language description, diagram encoding, and visualization accurately reflect the sequence of actions taken and the current state. All objects from the initial state are present in the current state's visualization.

INACTIVE REASON: Pruned in beam search
