Parent State ID: 74
State Depth: 11
Action Taken: stack(block_b, block_d)
Action Reasoning: To get closer to the goal state, block B needs to be stacked on block D. This action aligns with the goal structure since block D is already in place.
State Description: Block A is on the table and clear. Block B is on block D and 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, with block B stacked on it. The hand is empty.
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)', 'stack(block_b, block_d)']

INACTIVE REASON: deactivated because diagram generation failed or invalid action chosen: 
