Attempt Number: 4
Error Message: The action and resulting child state have already been explored.

Action Reasoning:
Currently, robot1 is at tile_1-4, holding the color white. Our goal is to move robot1 to tile_1-0, the starting point for painting the top row. The action "left(robot1, tile_1-4, tile_1-3)" will move the robot left, progressing towards tile_1-0, consistent with the layout and the indication that left is the correct movement direction. This action will bring the robot closer to the next step, which is changing paint colors if necessary and then painting up on the row above.

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

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