Parent State ID: 15
State Depth: 5
Action Taken: paint-down(robot1, tile_2-2, tile_1-2, black)
Action Reasoning: The robot is on tile_1-2, holding black, and can paint tile_2-2 directly below it. This action progresses towards the goal of painting row 2 with the specified colors.
State Description: (tile_0-1: clear, tile_0-2: clear, tile_0-3: clear, tile_1-1: clear, tile_1-2: occupied by robot1 holding color black, tile_1-3: clear, tile_2-1: painted black, tile_2-2: painted black, tile_2-3: clear, robot1: on tile_1-2 holding color black, color_white: available, color_black: available)
Action Path: ['down(robot1, tile_0-1, tile_1-1)', 'change-color(robot1, white, black)', 'paint-down(robot1, tile_2-1, tile_1-1, black)', 'right(robot1, tile_1-1, tile_1-2)', 'paint-down(robot1, tile_2-2, tile_1-2, black)']

INACTIVE REASON: deactivated because diagram generation failed or invalid action chosen: Tile tile_2-2 is painted black instead of white, violating the goal state's requirements.
