(declare-sort Loc 0)
(declare-const l0 Loc)
(declare-const l1 Loc)
(declare-const l2 Loc)
(declare-const l3 Loc)
(declare-const l4 Loc)
(assert (distinct l0 l1 l2 l3 l4))

(define-fun cfg_init ( (pc Loc) (src Loc) (rel Bool) ) Bool
  (and (= pc src) rel))

(define-fun cfg_trans2 ( (pc Loc) (src Loc)
                         (pc1 Loc) (dst Loc)
                         (rel Bool) ) Bool
  (and (= pc src) (= pc1 dst) rel))

(define-fun cfg_trans3 ( (pc Loc) (exit Loc)
                         (pc1 Loc) (call Loc)
                         (pc2 Loc) (return Loc)
                         (rel Bool) ) Bool
  (and (= pc exit) (= pc1 call) (= pc2 return) rel))

(define-fun init_main ( (pc^0 Loc) (pre_v^0 Int) (v^0 Int) (v_next^0 Int) ) Bool
  (cfg_init pc^0 l4 true))

(define-fun next_main (
                 (pc^0 Loc) (pre_v^0 Int) (v^0 Int) (v_next^0 Int)
                 (pc^post Loc) (pre_v^post Int) (v^post Int) (v_next^post Int)
             ) Bool
  (or
    (cfg_trans2 pc^0 l0 pc^post l1 (and (and (and (<= (+ 1 v^0) (+ 0 v_next^0)) (= pre_v^0 pre_v^post)) (= v^0 v^post)) (= v_next^0 v_next^post)))
    (cfg_trans2 pc^0 l0 pc^post l2 (and (and (= pre_v^0 pre_v^post) (= v^0 v^post)) (= v_next^0 v_next^post)))
    (cfg_trans2 pc^0 l2 pc^post l0 (exists ( (v^1 Int) ) (and (and (and (= v_next^post v_next^post) (= pre_v^post (+ 0 v^0))) (= v^1 (+ 0 v_next^post))) (= v^post (+ 1 v^1)))))
    (cfg_trans2 pc^0 l3 pc^post l2 (and (and (= pre_v^0 pre_v^post) (= v^0 v^post)) (= v_next^0 v_next^post)))
    (cfg_trans2 pc^0 l4 pc^post l3 (and (and (= pre_v^0 pre_v^post) (= v^0 v^post)) (= v_next^0 v_next^post)))
  )
)