Attempt Number: 3
Error Message: The action right(robot1, tile_1-1, tile_1-2) has already been explored.

Action Reasoning:
The last action taken was "paint-up," which means the next logical step is to move the robot horizontally if there are unpainted tiles in the row above. Since tile_0-2 is not painted, the robot should move to the right from tile_1-1 to tile_1-2. This action will position the robot correctly to paint the next tile in the sequence.

New State Description:
Robot1 moves from tile_1-1 to tile_1-2, preparing to paint the tile above it, tile_0-2. The tile_1-1 becomes clear, and tile_1-2 is now occupied by Robot1.

Action Chosen:
right(robot1, tile_1-1, tile_1-2)
