(+ 2 1) | (+ 1 2)
(+ 1 (+ (+ x 2) 2)) | (ite (<= (+ (+ x (+ 2 2)) 1) 0) 1 2)
(ite (<= (+ (+ 1 x) (+ 2 1)) 0) (+ 1 2) 1) | (v0 x)
