Parent State ID: 212
State Depth: 18
Action Taken: change-color(robot1, white, black)
Action Reasoning: The robot is currently on tile_1-3 and holding the color white. The next unpainted tile in row 1 is tile_1-2, which needs to be painted black. Since the robot is holding white, the best action is to change the color to black to prepare for painting tile_1-2.
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 clear. 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 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)', '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)', 'down(robot1, tile_0-2, tile_1-2)', 'right(robot1, tile_1-2, tile_1-3)', 'change-color(robot1, black, white)', 'change-color(robot1, white, black)']

successfully verified the action of new state 228 with the path: The last action `change-color(robot1, white, black)` is valid because all preconditions are met: robot1 was holding white, and black was available. The effects are correctly updated in the current state. The natural language description and visualization accurately reflect the sequence of actions taken, maintaining consistency with the initial state and the goal requirements.

INACTIVE REASON: Pruned in beam search
