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

Action Reasoning:
The last action taken was a move to the right, which means the next logical step is to change the color of the paint gun. This is necessary because the goal state requires an alternating color pattern, and the robot is currently holding white paint. The next tile to be painted (tile_0-3) should be white, so the robot needs to change its paint gun color to black to prepare for painting the next tile (tile_0-4) black after painting tile_0-3 white.

New State Description:
Robot1, located on tile_1-4, changes its paint gun color from white to black. The robot is now holding black paint.

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