Parent State ID: 3
State Depth: 3
Action Taken: stack(a, c)
Action Reasoning: To achieve the goal state, we need to stack blocks in the correct order. The next logical step is to stack block 'a' on block 'c', as both are clear and this action aligns with the goal state.
State Description: There are four blocks: a, b, c, and d. The hand is empty. Block a is on top of block c and is clear. Block d is on top of block a and is clear. Block b is on the table and is clear. Block c is on the table and supporting block a.
Action Path: ['unstack(c, d)', 'put-down(c)', 'stack(a, c)']

INACTIVE REASON: deactivated because diagram generation failed or invalid action chosen: The precondition that the hand must be holding block 'a' is not satisfied.
