Attempt Number: 4
Error Message: The action change-color(robot1, black, white) has already been explored.

Action Reasoning:
The last action taken was moving the robot to the right, which means the next step should be to change the color of the paint gun. This aligns with the goal of alternating colors in the top row, where tile_0-1 needs to be painted white. The robot is currently holding black, so changing to white is necessary before painting.

New State Description:
Robot1, located on tile_1-1, has changed its paint gun color from black to white. The robot is now ready to paint the tile above it, tile_0-1, with white.

Action Chosen:
change-color(robot1, black, white)
