** Calling: z3 -nw -in -smt2 [GOOD] ; Automatically generated by SBV. Do not edit. [GOOD] (set-option :print-success true) [GOOD] (set-option :global-declarations true) [GOOD] (set-option :smtlib2_compliant true) [GOOD] (set-option :diagnostic-output-channel "stdout") [GOOD] (set-option :produce-models true) [GOOD] (set-logic ALL) [GOOD] ; --- uninterpreted sorts --- [GOOD] ; --- tuples --- [GOOD] ; --- sums --- [GOOD] ; --- literal constants --- [GOOD] (define-fun s1 () String "b") [GOOD] (define-fun s3 () String "a") [GOOD] ; --- skolem constants --- [GOOD] (declare-fun s0 () String) ; tracks user variable "a" [GOOD] ; --- constant tables --- [GOOD] ; --- skolemized tables --- [GOOD] ; --- arrays --- [GOOD] ; --- uninterpreted constants --- [GOOD] ; --- user given axioms --- [GOOD] ; --- formula --- [GOOD] (define-fun s2 () String (str.++ s0 s1)) [GOOD] (define-fun s4 () String (str.++ s3 s0)) [GOOD] (define-fun s5 () Bool (= s2 s4)) [GOOD] (assert s5) [SEND] (check-sat) [RECV] unsat *** Solver : Z3 *** Exit code: ExitSuccess