Parent State ID: 239
State Depth: 20
Action Taken: down(robot1, tile_0-3, tile_1-3)
Action Reasoning: The robot needs to paint tile_1-3 white to match the goal state. Since the robot is currently on tile_0-3 and holding white, it should move down to tile_1-3 to prepare for painting.
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 painted white. Tile tile_1-2 is painted black. Tile tile_1-3 is occupied by robot1. Tile tile_2-1 is painted black. Tile tile_2-2 is painted white. Tile tile_2-3 is painted black. Robot1 is on tile_1-3, 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)', 'right(robot1, tile_1-2, tile_1-3)', 'left(robot1, tile_1-3, tile_1-2)', 'left(robot1, tile_1-2, tile_1-1)', 'paint-down(robot1, tile_2-1, tile_1-1, black)', 'up(robot1, tile_1-1, tile_0-1)', 'change-color(robot1, black, white)', 'paint-down(robot1, tile_1-1, tile_0-1, white)', 'change-color(robot1, white, black)', 'right(robot1, tile_0-1, tile_0-2)', 'right(robot1, tile_0-2, tile_0-3)', 'left(robot1, tile_0-3, tile_0-2)', 'paint-down(robot1, tile_1-2, tile_0-2, black)', 'change-color(robot1, black, white)', 'right(robot1, tile_0-2, tile_0-3)', 'down(robot1, tile_0-3, tile_1-3)']

successfully verified the action of new state 255 with the path: The last action `down(robot1, tile_0-3, tile_1-3)` is valid as all preconditions are met, and the effects are correctly reflected in the current state. The action moves the robot closer to achieving the goal state by positioning it to paint `tile_2-3`. The natural language description, diagram encoding, and visualization are accurate and consistent with the sequence of actions taken.

INACTIVE REASON: Pruned in beam search
