Attempt Number: 3
Error Message: The resulting child state is the same as a previously explored state.

Action Reasoning:
The last action taken was a "paint-up" action, which means the next logical step is to move the robot horizontally to the next clear tile in the row. Since the robot is currently at tile_1-4 and the goal is to paint the entire row above it, the robot should move left to tile_1-3. However, since this action has already been explored, we'll try moving the robot right, which is a valid alternative to explore the state space further.

New State Description:
Robot1 moves from tile_1-4 to tile_1-3. Tile_1-4 becomes clear, and tile_1-3 is now occupied by Robot1.

Action Chosen:
right(robot1, tile_1-4, tile_1-3)
