Parent State ID: 126
State Depth: 13
Action Taken: (board p4 fast0 n2 0 1)
Action Reasoning: To progress towards the goal, passenger p4, who needs to reach floor 4, is already on floor 2 with elevator fast0 present and available. Boarding p4 onto fast0 will enable transporting p4 to floor 4 with minimal movement since no other passengers are on board.
State Description: - fast0: At floor 2 (n2), 1/2 passengers (carrying p4).- fast1: At floor 0 (n0), 0/2 passengers.- slow0-0: At floor 2 (n2), 0/1 passengers.- p0: On floor 2 (n2).- p1: On floor 1 (n1).- p2: On floor 5 (n5).- p3: On floor 4 (n4).- p4: Onboard fast0 (at n2).- p5: On floor 0 (n0).- p6: On floor 2 (n2).
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)', '(board p0 fast0 n4 0 1)', '(move-down-fast fast0 n4 n2)', '(leave p0 fast0 n2 1 0)', '(board p4 fast0 n2 0 1)']

successfully verified the action of new state 131 with the path: The last action `(board p4 fast0 n2 0 1)` is valid as all preconditions are met, and 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. The action logically progresses towards the goal state.
