'(=> (= (Door_Opening_Type ?X) center)
(= (Car_Return_Left ?X)
(/ (- (Platform_Width_F (Elevator.Platform ?X))
(Opening_Width_Door ?X))
2)))
;; BUG: redundant constraints ;; ;; The constraints: ;; car_return_left_c01 ;; car_return_left_c02 ;; car_return_left_c03 ;; are really subsumed by car_return_left_c0[4-9] ;; ;; The redundancy is probably an historical artefact.