** 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 unbounded values, using catch-all.
[GOOD] ; --- tuples ---
[GOOD] (declare-datatypes ((SBVTuple2 2)) ((par (T1 T2)
                                           ((mkSBVTuple2 (proj_1_SBVTuple2 T1)
                                                         (proj_2_SBVTuple2 T2))))))
[GOOD] ; --- sums ---
[GOOD] (declare-datatypes ((SBVEither 2)) ((par (T1 T2)
                                           ((left_SBVEither  (get_left_SBVEither  T1))
                                            (right_SBVEither (get_right_SBVEither T2))))))
[GOOD] (declare-datatypes ((SBVMaybe 1)) ((par (T)
                                           ((nothing_SBVMaybe)
                                            (just_SBVMaybe (get_just_SBVMaybe T))))))
[GOOD] ; --- ADTs  --- 
[GOOD] ; User defined ADT: Expr
[GOOD] (declare-datatype Expr (par (nm val) (
           (Val (getVal_1 val))
           (Var (getVar_1 nm))
           (Add (getAdd_1 (Expr nm val)) (getAdd_2 (Expr nm val)))
           (Mul (getMul_1 (Expr nm val)) (getMul_2 (Expr nm val)))
           (Let (getLet_1 nm) (getLet_2 (Expr nm val)) (getLet_3 (Expr nm val)))
       )))
[GOOD] ; --- literal constants ---
[GOOD] ; --- top level inputs ---
[GOOD] (declare-fun s0 () (Expr (SBVMaybe (SBVTuple2 Int String)) (SBVEither (_ BitVec 8) (_ BitVec 16)))) ; tracks user variable "x"
[GOOD] ; --- constant tables ---
[GOOD] ; --- non-constant tables ---
[GOOD] ; --- uninterpreted constants ---
[GOOD] ; --- user defined functions ---
[GOOD] ; --- assignments ---
[GOOD] (define-fun s1 () Bool ((as is-Let Bool) s0))
[GOOD] ; --- delayedEqualities ---
[GOOD] ; --- formula ---
[GOOD] (assert s1)
[SEND] (check-sat)
[RECV] sat
[SEND] (get-value (s0))
[RECV] ((s0 (Let nothing_SBVMaybe
            (Val (right_SBVEither #x0000))
            (Val (right_SBVEither #x0000)))))
Result: (let Nothing = Right 0 in Right 0)
*** Solver   : Z3
*** Exit code: ExitSuccess