Parent State ID: 189
State Depth: 16
Action Taken: change-color(robot1, white, black)
Action Reasoning: The next best action is to change the robot's color to black, since the robot is on tile_1-3, and the tile directly below (tile_2-3) is already painted, the robot must move up eventually. But first, we need to prepare for painting tile_1-2, which requires the black color.
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)', 'right(robot1, tile_0-1, tile_0-2)', 'right(robot1, tile_0-2, tile_0-3)', 'down(robot1, tile_0-3, tile_1-3)', 'change-color(robot1, white, black)']

successfully verified the action of new state 210 with the path: The last action `change-color(robot1, white, black)` is valid because all preconditions are satisfied: the robot was holding white, and black is available. The effects are correctly updated in the current state, where the robot is now holding black. The current state's description and visualization accurately reflect the sequence of actions taken, and the action logically progresses towards the goal state.

INACTIVE REASON: Pruned in beam search
