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

Action Reasoning:
To progress toward the goal state where each car is aligned with its curb number, we need to strategically move the cars. Car_2 is double parked behind car_3 at curb_3. A clear curb is available at curb_1. Moving car_2 to curb_1 will leave car_3 clear, which aligns curb_3 for car_3 and prepares car_2 for its own destination.

New State Description:
Curb_0 contains car_0, clear. Curb_1 now contains car_2, clear. Curb_2 contains car_1, clear. Curb_3 contains car_3, clear. Car_0 is parked and clear. Car_1 is parked and clear. Car_2 has moved to curb_1 and is clear. Car_3 is now parked and clear.

Action Chosen:
(move-car-to-curb car_2 car_3 curb_1)
