** 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-option :pp.max_depth      4294967295)
[GOOD] (set-option :pp.min_alias_size 4294967295)
[GOOD] (set-option :model.inline_def  true      )
[GOOD] (set-logic ALL) ; has user-defined data-types, using catch-all.
[GOOD] ; --- tuples ---
[GOOD] ; --- sums ---
[GOOD] ; --- ADTs  --- 
[GOOD] ; User defined ADT: Maybe
[GOOD] (declare-datatype Maybe (par (a) (
           (Nothing)
           (Just (getJust_1 a))
       )))
[GOOD] ; --- literal constants ---
[GOOD] (define-fun s2 () (Maybe String) ((as Just (Maybe String)) (_ char #x41)))
[GOOD] ; --- top level inputs ---
[GOOD] (declare-fun s0 () (Maybe String)) ; tracks user variable "x"
[GOOD] (assert (= 1 (str.len (getJust_1 s0))))
[GOOD] ; --- constant tables ---
[GOOD] ; --- non-constant tables ---
[GOOD] ; --- uninterpreted constants ---
[GOOD] ; --- user defined functions ---
[GOOD] ; --- assignments ---
[GOOD] (define-fun s1 () Bool ((as is-Just Bool) s0))
[GOOD] (define-fun s3 () Bool (distinct s0 s2))
[GOOD] (define-fun s4 () Bool (and s1 s3))
[GOOD] ; --- delayedEqualities ---
[GOOD] ; --- formula ---
[GOOD] (assert s4)
[SEND] (check-sat)
[RECV] sat
[SEND] (get-value (s0))
[RECV] ((s0 (Just "B")))

MODEL: SMTModel {modelObjectives = [], modelBindings = Nothing, modelAssocs = [("x",Just 'B' :: Maybe Char)], modelUIFuns = []}
DONE.*** Solver   : Z3
*** Exit code: ExitSuccess