Parent State ID: 20
State Depth: 9
Action Taken: pick-up(c)
Action Reasoning: The goal is to stack blocks a, d, and c. First, pick up block c, as it needs to be on the table in the goal state.
State Description: The hand is holding block 'c'. Block 'a' is clear and on the table. Block 'b' is clear and on the table. Block 'd' is clear and on the table. Block 'c' is no longer on the table and is not clear. The hand is not empty.
Action Path: ['unstack(b, c)', 'put-down(b)', 'unstack(c, d)', 'put-down(c)', 'unstack(d, a)', 'put-down(d)', 'pick-up(a)', 'put-down(a)', 'pick-up(c)']

INACTIVE REASON: deactivated because diagram generation failed or invalid action chosen: The action does not align with the goal state's requirement for block 'c' to be on the table.
