Attempt Number: 2
Error Message: The action and resulting child state have already been explored.

Action Reasoning:
The last action taken was a color change, where the robot changed its paint gun color from black to white. According to the logical conclusions, after a color change, the next best action is to paint the tile directly above the robot. The robot is currently on tile_1-1, holding the white paint gun. The tile directly above, tile_0-1, is not painted. Therefore, the best action is to paint tile_0-1 with the white color.

New State Description:
Tile_0-1 is now painted white. Robot1 remains on tile_1-1, holding the white paint gun.

Action Chosen:
paint-up(robot1, tile_0-1, tile_1-1, white)
