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

Action Reasoning:
The robot is currently on tile_1-4 and needs to move to tile_1-0 to start painting the first row. The shortest path involves moving left across the second row. Since the robot is holding black paint, which is the correct color for the first tile in the goal state, it should continue moving left. The next logical step is to move left from tile_1-4 to tile_1-3.

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

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