Parent State ID: 215
State Depth: 18
Action Taken: right(robot1, tile_1-2, tile_1-3)
Action Reasoning: The robot is holding the color black and is currently on tile_1-2. The next step should be to move to tile_1-3, which is clear, so that the robot can paint tile_2-3 black, as required by the goal state.
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)', 'right(robot1, tile_0-2, tile_0-3)', 'down(robot1, tile_0-3, tile_1-3)', 'left(robot1, tile_1-3, tile_1-2)', 'right(robot1, tile_1-2, tile_1-3)']

successfully verified the action of new state 234 with the path: The last action `right(robot1, tile_1-2, tile_1-3)` is valid as all preconditions are satisfied, and the effects are correctly updated in the current state. The action logically moves the robot closer to achieving the goal state. The natural language description and visualization of the current state are accurate and consistent with the sequence of actions taken.

INACTIVE REASON: Pruned in beam search
