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

Action Reasoning:
Car5 needs to approach its eventual destination behind car0, which requires both cars to be in curb0. First, free curb4 for car4 by moving car5 using a valid action.

New State Description:
Car0: Parked and blocked in curb0, car5 double parked behind it (no longer clear).Car1: Parked and clear in curb2.Car2: Parked and clear in curb1.Car3: Parked and clear in curb3.Car4: Parked and clear in curb4.Car5: Double parked and clear behind car0 in curb0.

Action Chosen:
(move-car-to-car car5 car4 car0)
