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

Action Reasoning:
The robot is currently at tile_1-4 and needs to move to tile_1-0 to start painting the top row. The shortest path involves moving left across the bottom row. The next logical step is to move the robot from tile_1-4 to tile_1-3. This action will bring the robot closer to tile_1-0, which is necessary to begin the painting process in the correct order.

New State Description:
Robot1 has moved from tile_1-4 to tile_1-3. Tile_1-4 is now clear, and tile_1-3 is occupied by the robot. The robot is still holding the white paint gun.

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