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

Action Reasoning:
The primary concern is clearing curb_1 and placing car_1 there, as it is presently empty. Car_2, which is currently clear and double-parked behind car_3, can move to occupy curb_1. This move aligns well with our goal state arrangements.

New State Description:
Curb_0 contains car_0, clear. Curb_1 contains car_2, clear. Curb_2 contains car_1, clear. Curb_3 contains car_3, clear. Car_0 is parked and clear in curb_0. Car_1 is parked and clear in curb_2. Car_2 is parked and clear in curb_1. Car_3 is parked and clear in curb_3.

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