Inductive wt_state: state -> Prop :=
  | wt_stmt_state: forall f s k e m te
        (WTK: wt_stmt_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTS: wt_stmt ge te f.(fn_return) s),
      wt_state (State f s k e m)
  | wt_expr_state: forall f r k e m te
        (WTK: wt_expr_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTE: wt_rvalue ge te r),
      wt_state (ExprState f r k e m)
  | wt_call_state: forall b fd vargs k m
        (WTK: wt_call_cont k (fundef_return fd))
        (WTFD: wt_fundef fd)
        (FIND: Genv.find_funct ge b = Some fd),
      wt_state (Callstate fd vargs k m)
  | wt_return_state: forall v k m ty
        (WTK: wt_call_cont k ty)
        (VAL: wt_val v ty),
      wt_state (Returnstate v k m)
  | wt_stuck_state:
      wt_state Stuckstate.Inductive wt_state: state -> Prop :=
  | wt_stmt_state: forall f s k e m te
        (WTK: wt_stmt_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTS: wt_stmt ge te f.(fn_return) s),
      wt_state (State f s k e m)
  | wt_expr_state: forall f r k e m te
        (WTK: wt_expr_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTE: wt_rvalue ge te r),
      wt_state (ExprState f r k e m)
  | wt_call_state: forall b fd vargs k m
        (WTK: wt_call_cont k (fundef_return fd))
        (WTFD: wt_fundef fd)
        (FIND: Genv.find_funct ge b = Some fd),
      wt_state (Callstate fd vargs k m)
  | wt_return_state: forall v k m ty
        (WTK: wt_call_cont k ty)
        (VAL: wt_val v ty),
      wt_state (Returnstate v k m)
  | wt_stuck_state:
      wt_state Stuckstate.Inductive wt_state: state -> Prop :=
  | wt_stmt_state: forall f s k e m te
        (WTK: wt_stmt_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTS: wt_stmt ge te f.(fn_return) s),
      wt_state (State f s k e m)
  | wt_expr_state: forall f r k e m te
        (WTK: wt_expr_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTE: wt_rvalue ge te r),
      wt_state (ExprState f r k e m)
  | wt_call_state: forall b fd vargs k m
        (WTK: wt_call_cont k (fundef_return fd))
        (WTFD: wt_fundef fd)
        (FIND: Genv.find_funct ge b = Some fd),
      wt_state (Callstate fd vargs k m)
  | wt_return_state: forall v k m ty
        (WTK: wt_call_cont k ty)
        (VAL: wt_val v ty),
      wt_state (Returnstate v k m)
  | wt_stuck_state:
      wt_state Stuckstate.Inductive wt_state: state -> Prop :=
  | wt_stmt_state: forall f s k e m te
        (WTK: wt_stmt_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTS: wt_stmt ge te f.(fn_return) s),
      wt_state (State f s k e m)
  | wt_expr_state: forall f r k e m te
        (WTK: wt_expr_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTE: wt_rvalue ge te r),
      wt_state (ExprState f r k e m)
  | wt_call_state: forall b fd vargs k m
        (WTK: wt_call_cont k (fundef_return fd))
        (WTFD: wt_fundef fd)
        (FIND: Genv.find_funct ge b = Some fd),
      wt_state (Callstate fd vargs k m)
  | wt_return_state: forall v k m ty
        (WTK: wt_call_cont k ty)
        (VAL: wt_val v ty),
      wt_state (Returnstate v k m)
  | wt_stuck_state:
      wt_state Stuckstate.Inductive wt_state: state -> Prop :=
  | wt_stmt_state: forall f s k e m te
        (WTK: wt_stmt_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTS: wt_stmt ge te f.(fn_return) s),
      wt_state (State f s k e m)
  | wt_expr_state: forall f r k e m te
        (WTK: wt_expr_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTE: wt_rvalue ge te r),
      wt_state (ExprState f r k e m)
  | wt_call_state: forall b fd vargs k m
        (WTK: wt_call_cont k (fundef_return fd))
        (WTFD: wt_fundef fd)
        (FIND: Genv.find_funct ge b = Some fd),
      wt_state (Callstate fd vargs k m)
  | wt_return_state: forall v k m ty
        (WTK: wt_call_cont k ty)
        (VAL: wt_val v ty),
      wt_state (Returnstate v k m)
  | wt_stuck_state:
      wt_state Stuckstate.Inductive wt_state: state -> Prop :=
  | wt_stmt_state: forall f s k e m te
        (WTK: wt_stmt_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTS: wt_stmt ge te f.(fn_return) s),
      wt_state (State f s k e m)
  | wt_expr_state: forall f r k e m te
        (WTK: wt_expr_cont te f k)
        (WTB: wt_stmt ge te f.(fn_return) f.(fn_body))
        (WTE: wt_rvalue ge te r),
      wt_state (ExprState f r k e m)
  | wt_call_state: forall b fd vargs k m
        (WTK: wt_call_cont k (fundef_return fd))
        (WTFD: wt_fundef fd)
        (FIND: Genv.find_funct ge b = Some fd),
      wt_state (Callstate fd vargs k m)
  | wt_return_state: forall v k m ty
        (WTK: wt_call_cont k ty)
        (VAL: wt_val v ty),
      wt_state (Returnstate v k m)
  | wt_stuck_state:
      wt_state Stuckstate.Scheme wt_stmt_ind2 := Minimality for wt_stmt Sort Prop
  with wt_lblstmts2_ind2 := Minimality for wt_lblstmts Sort Prop.

Lemma preservation_estep: forall S t S', estep ge S t S' -> wt_state S -> wt_state S'.