Parent State ID: 43
State Depth: 11
Action Taken: stack(d, c)
Action Reasoning: To achieve the goal state, block 'd' needs to be on top of block 'c'. Since block 'd' is clear and on the table, and block 'c' is also clear, the best action is to stack 'd' on 'c'.
State Description: Block 'a' is on top of block 'b', with block 'b' on the table and supporting block 'a'. Block 'd' is now on top of block 'c', with block 'c' on the table and supporting block 'd'. The hand is empty. The diagram would show block 'd' on block 'c', with block 'c' marked as supporting and the hand empty.
Action Path: ['unstack(d, a)', 'put-down(d)', 'unstack(a, c)', 'put-down(a)', 'pick-up(d)', 'put-down(d)', 'unstack(c, b)', 'put-down(c)', 'pick-up(a)', 'stack(a, b)', 'stack(d, c)']

INACTIVE REASON: deactivated because diagram generation failed or invalid action chosen: The hand is not holding block 'd', violating the precondition for the stack action.
