Attempt Number: 3
Error Message: The action and resulting child state have already been explored.

Action Reasoning:
The last action taken was "paint-up" using robot1 at tile_1-3. According to the logical conclusions provided, after a "paint-up" action, the next step should be to move the robot horizontally if there are any unpainted tiles in the row above. Since tile_0-4 is not painted, the next action should be to move robot1 to the right from tile_1-3 to tile_1-4.

New State Description:
Robot1 moves from tile_1-3 to tile_1-4, holding white paint. Tile_1-3 becomes clear, and tile_1-4 is now occupied by robot1.

Action Chosen:
right(robot1, tile_1-3, tile_1-4)
