Parent State ID: 54
State Depth: 12
Action Taken: (move-down-fast fast0 n3 n1)
Action Reasoning: The next action in the plan is to board passenger p1 onto fast0 at floor n1. Since fast0 is currently at floor n3, we need to move it down to n1 first.
State Description: - **fast0**: A fast elevator now at floor 1 (n1), with 0 passengers and a capacity of 2.- **fast1**: A fast elevator at floor 0 (n0), with 0 passengers and a capacity of 2.- **slow0-0**: A slow elevator at floor 1 (n1), with 0 passengers and a capacity of 1.- **slow1-0**: A slow elevator at floor 3 (n3), with 0 passengers and a capacity of 1.- **p0**: On floor 1 (n1).- **p1**: On floor 1 (n1).- **p2**: On floor 2 (n2).- **p3**: On floor 0 (n0).- **p4**: On floor 3 (n3).- **p5**: On floor 3 (n3).
Action Path: ['(move-up-fast fast1 n3 n4)', '(board p2 fast1 n4 n0 n1)', '(board p3 fast1 n4 n1 n2)', '(move-down-fast fast1 n4 n2)', '(leave p2 fast1 n2 n2 n1)', '(move-down-fast fast1 n2 n0)', '(leave p3 fast1 n0 n1 n0)', '(move-up-fast fast0 n0 n1)', '(board p4 fast0 n1 n0 n1)', '(move-up-fast fast0 n1 n3)', '(leave p4 fast0 n3 n1 n0)', '(move-down-fast fast0 n3 n1)']

successfully verified the action of new state 61 with the path: The last action `(move-down-fast fast0 n3 n1)` is valid as all preconditions are met, and the effects are correctly reflected in the current state. The natural language description, diagram encoding, and visualization of the current state are accurate and consistent with the sequence of actions taken. All objects from the initial state are present in the current state's visualization.

INACTIVE REASON: Pruned in beam search
