Parent State ID: 237
State Depth: 20
Action Taken: left(robot1, tile_0-2, tile_0-1)
Action Reasoning: The optimal action is to move "left" from tile_0-2 to tile_0-1 because it positions the robot to switch colors and paint the unpainted tile_1-3 in the required white color.
State Description: Tile tile_0-1 is now occupied by robot1. Tile tile_0-2 is clear. Tile tile_0-3 remains clear. Tile tile_1-1 is painted white. Tile tile_1-2 is painted black. Tile tile_1-3 is clear. 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_0-1, 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)', '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)', 'right(robot1, tile_0-2, tile_0-3)', 'left(robot1, tile_0-3, tile_0-2)', 'left(robot1, tile_0-2, tile_0-1)']

successfully verified the action of new state 253 with the path: The last action `left(robot1, tile_0-2, tile_0-1)` is valid because all preconditions are met: the robot was on `tile_0-2`, `tile_0-1` was clear, and the move correctly updates the state. The current state's description and visualization accurately reflect the sequence of actions taken, and the robot is positioned to continue towards the goal state.

INACTIVE REASON: Pruned in beam search
