(ite (<= (+ x 2) 0) (+ x 2) x) | (v4 x)
(+ (ite (<= (+ x 2) 0) (+ x 2) x) x) | (+ (v4 x) x)
(+ (v1 x y) x) | (+ (v3 x y) x)
(v1 x y) | (v3 x y)
