Parent State ID: 24
State Depth: 10
Action Taken: stack(d, a)
Action Reasoning: The goal is to have block 'd' on top of block 'a', which is on top of block 'c' on the table. Since block 'a' is already on block 'c', the next step is to stack block 'd' on block 'a'.
State Description: The hand is empty. Block 'd' is on top of block 'a' and is clear. Block 'a' is on top of block 'c' and is not clear. Block 'b' is clear and on the table. Block 'c' is not clear and on the table.
Action Path: ['unstack(b, c)', 'put-down(b)', 'unstack(c, d)', 'put-down(c)', 'unstack(d, a)', 'put-down(d)', 'pick-up(a)', 'stack(a, c)', 'pick-up(d)', 'stack(d, a)']

successfully verified the action of new state 29 with the path: The last action, stack(d, a), is valid as it meets all preconditions and results in the correct effects. The current state matches the goal state, and both the natural language description and visualization accurately reflect the state after the sequence of actions.
