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

Action Reasoning:
Robot1 should move to the clear tile_1-3 to start painting from the top, as row 3 is painted and Robot1 should move up to continue painting row 2.

New State Description:
- Robot1 is on tile_1-3, holding the color black.- Row 0: tile_0-1, tile_0-2, tile_0-3 are clear.- Row 1: tile_1-1, tile_1-2 are clear, tile_1-3 is occupied by robot1.- Row 2: tile_2-1, tile_2-2, tile_2-3 are clear.- Row 3: tile_3-1 is painted white, tile_3-2 is painted black, tile_3-3 is painted white.- White and black paints are available for switching.

Action Chosen:
up(robot1, tile_2-3, tile_1-3)
