; Automatically generated by map2smt (set-logic HORN) (declare-datatypes ((listOfInt 0) ) (((cons-listOfInt (head-listOfInt Int) (tail-listOfInt listOfInt)) (nil-listOfInt)))) (declare-fun leq (Int Int Bool) Bool) (declare-fun plus (Int Int Int) Bool) (declare-fun len (listOfInt Int) Bool) (declare-fun append (listOfInt listOfInt listOfInt) Bool) (declare-fun ff () Bool) (assert (forall ( (A Int) (B Int) (C Int) ) (=> (and (= B (- C A)) (>= A 0) (>= (- C A) 0) ) (plus A B C) ) ) ) (assert (forall ( (A Int) ) (=> (= A 0) (len nil-listOfInt A) ) ) ) (assert (forall ( (A Int) (B listOfInt) (C Int) (D Int) ) (=> (and (= C (+ 1 D)) (len B D) ) (len (cons-listOfInt A B) C) ) ) ) (assert (forall ( (A listOfInt) ) (append nil-listOfInt A A) ) ) (assert (forall ( (A Int) (B listOfInt) (C listOfInt) (D listOfInt) ) (=> (append B C D) (append (cons-listOfInt A B) C (cons-listOfInt A (cons-listOfInt A D))) ) ) ) (assert (forall ( (A Int) (B Int) (C Int) (D Int) (E listOfInt) (F listOfInt) (G listOfInt) ) (=> (and (>= (- A B) 1) (= (+ C D) A) (append E F G) (len G B) (len E C) (len F D) ) ff ) ) ) (assert (forall ( (A Int) (B Int) (C Int) (D Int) (E listOfInt) (F listOfInt) (G listOfInt) ) (=> (and (<= (- A B) (- 1)) (= (+ C D) A) (append E F G) (len G B) (len E C) (len F D) ) ff ) ) ) (assert (not ff)) (check-sat)