Parent State ID: 13
State Depth: 4
Action Taken: change-color(robot1, white, black)
Action Reasoning: The robot is currently on tile_1-2 and holding the color white. To progress towards the goal, the robot should paint tile_2-3 black. First, it needs to change its color to black.
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 clear. Tile tile_1-2 is clear. Tile tile_1-3 is clear. Tile tile_2-1 is clear. Tile tile_2-2 is painted white. Tile tile_2-3 is clear. Robot1 is on tile_1-2, holding color black. 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)']

successfully verified the action of new state 18 with the path: The last action `change-color(robot1, white, black)` is valid because all preconditions are satisfied: the robot was holding color `white`, and `black` was available. The current state accurately reflects the effects of the action, with the robot now holding color `black`. The natural language description and visualization are consistent with the sequence of actions taken.
