Attempt Number: 4
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
The next valid action is to change color from white to black since the robot holds white paint and the target tile below (tile_2-3) is already painted. By switching colors, the robot prepares to paint new tiles in row 2.

New State Description:
- Robot1 is on tile_1-3 and is holding the color black.- Tile_0-4 is clear.- Tile_1-3 is occupied by robot1.- Tile_1-4 is clear.- Tile_1-5 is clear.- Tile_2-2 is painted white and is no longer clear.- Tile_2-3 is painted black and is no longer clear.- Tile_2-4 is painted white and is no longer clear.- Tile_2-5 is painted black and is no longer clear.- Tile_2-1 is clear.- Tile_0-1, tile_0-2, tile_0-3, tile_0-5, tile_1-1, tile_1-2, and tile_2-1 remain clear and unpainted.- Both colors, white and black, are available for switching.

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