Parent State ID: 133
State Depth: 14
Action Taken: (move-up-fast fast0 n2 n4)
Action Reasoning: fast0 is already on n2 with passengers p0 and p6, who both need to remain on n2. We can move fast0 up to n4 so that it can later board p3 and take them to n5 to be close with the rest of the passengers for the plan.
State Description: - **fast0**: At floor 4 (n4), 0/2 passengers, empty.- **fast1**: At floor 1 (n1), 0/2 passengers, empty.- **slow0-0**: At floor 2 (n2), 0/1 passengers, empty.- **p0**: On floor 2 (n2), not on board any elevator.- **p1**: On floor 1 (n1), waiting.- **p2**: On floor 5 (n5), waiting.- **p3**: On floor 4 (n4), waiting.- **p4**: On floor 2 (n2), waiting.- **p5**: On floor 0 (n0), waiting.- **p6**: On floor 2 (n2), waiting.
Action Path: ['(board p2 fast1 n3 0 1)', '(move-up-fast fast1 n3 n5)', '(move-up-fast fast0 n0 n1)', '(leave p2 fast1 n5 1 0)', '(board p5 fast1 n5 0 1)', '(move-down-fast fast1 n5 n0)', '(leave p5 fast1 n0 1 0)', '(move-up-fast fast0 n1 n2)', '(move-up-fast fast0 n2 n4)', '(move-up-fast fast1 n0 n1)', '(board p0 fast0 n4 0 1)', '(move-down-fast fast0 n4 n2)', '(leave p0 fast0 n2 1 0)', '(move-up-fast fast0 n2 n4)']

successfully verified the action of new state 149 with the path: The last action `(move-up-fast fast0 n2 n4)` 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 are consistent with the sequence of actions taken. The action moves the elevator closer to achieving the goal state by positioning it to pick up a passenger at n4.

INACTIVE REASON: Pruned in beam search
