Parent State ID: 69
State Depth: 8
Action Taken: paint-down(robot1, tile_2-1, tile_1-1, white)
Action Reasoning: The robot should paint tile_2-1 to make progress toward the goal state, as it currently holds white and the tile is clear.
State Description: Tile tile_0-1 is clear. Tile tile_0-2 is clear. Tile tile_0-3 is clear. Tile tile_1-1 is occupied by robot1 holding color white. Tile tile_1-2 is clear. Tile tile_1-3 is clear. Tile tile_2-1 is painted white. Tile tile_2-2 is painted white. Tile tile_2-3 is painted black. Robot1 is on tile_1-1, holding color white. Colors white and black are available for switching.
Action Path: ['right(robot1, tile_0-1, tile_0-2)', 'down(robot1, tile_0-2, tile_1-2)', 'paint-down(robot1, tile_2-2, tile_1-2, white)', 'change-color(robot1, white, black)', 'paint-down(robot1, tile_2-3, tile_1-2, black)', 'left(robot1, tile_1-2, tile_1-1)', 'change-color(robot1, black, white)', 'paint-down(robot1, tile_2-1, tile_1-1, white)']

INACTIVE REASON: action path invalid: The last action is invalid because the precondition that `tile_2-1` must be clear is not met; it is already painted white. The current state's natural language description and visualization are accurate, but the action violates the domain constraints.
