Parent State ID: 82
State Depth: 14
Action Taken: put-down(block_a)
Action Reasoning: To achieve the goal state, we must first place Block A on Block B. This step is essential to continue stacking correctly. I will put down Block A to free the hand, then pick up Block A again and stack it on Block B.
State Description: Block A is now on the table and clear. Block B is on Block D and remains clear. Block C is on the table and not clear, with Block D stacked on it. Block D is on Block C and not clear. The hand is empty and not holding any block.
Action Path: ['unstack(block_b, block_c)', 'stack(block_b, block_d)', 'unstack(block_b, block_d)', 'stack(block_b, block_d)', 'unstack(block_b, block_d)', 'stack(block_b, block_c)', 'unstack(block_b, block_c)', 'put-down(block_b)', 'pick-up(block_d)', 'stack(block_d, block_c)', 'pick-up(block_b)', 'stack(block_b, block_d)', 'pick-up(block_a)', 'put-down(block_a)']

INACTIVE REASON: deactivated because diagram generation failed or invalid action chosen: The action does not bring us closer to the goal state; block A should be on block B, not on the table.
