(* this hypothesis is not needed for soundness, just for selectivity *)
Ltac  forward_call_id1_wow' :=
let H := fresh in intro H;
eapply (semax_call_id1_wow
_ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ H);
clear H;
lazymatch goal with Frame := _ : list mpred |- _ => try clear Frame end;
[check_result_type
|apply Logic.I
| cbv beta iota zeta; unfold_post; extensionality rho;
repeat rewrite exp_uncurry;
try rewrite no_post_exists; repeat rewrite exp_unfold;
first [apply exp_congr; intros ?vret; reflexivity
| give_EX_warning
]
| prove_delete_temp
| unify_postcondition_exps
| unfold fold_right_and; repeat rewrite and_True; auto
].
Ltac forward_call_id1_x_wow' :=
let H := fresh in intro H;
eapply (semax_call_id1_x_wow
_ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ H);
clear H;
lazymatch goal with Frame := _ : list mpred |- _ => try clear Frame end;
[ check_result_type | check_result_type
| apply Coq.Init.Logic.I | apply Coq.Init.Logic.I | reflexivity
| (clear; let H := fresh in intro H; inversion H)
| cbv beta iota zeta; unfold_post; extensionality rho;
repeat rewrite exp_uncurry;
try rewrite no_post_exists; repeat rewrite exp_unfold;
first [apply exp_congr; intros ?vret; reflexivity
| give_EX_warning
]
| prove_delete_temp
| prove_delete_temp
| unify_postcondition_exps
| unfold fold_right_and; repeat rewrite and_True; auto
].
Ltac forward_call_id1_y_wow' :=
let H := fresh in intro H;
eapply (semax_call_id1_y_wow
_ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ H);
clear H;
lazymatch goal with Frame := _ : list mpred |- _ => try clear Frame end;
[ check_result_type | check_result_type
| apply Coq.Init.Logic.I | apply Coq.Init.Logic.I | reflexivity
| (clear; let H := fresh in intro H; inversion H)
| cbv beta iota zeta; unfold_post; extensionality rho;
repeat rewrite exp_uncurry;
try rewrite no_post_exists; repeat rewrite exp_unfold;
first [apply exp_congr; intros ?vret; reflexivity
| give_EX_warning
]
| prove_delete_temp
| prove_delete_temp
| unify_postcondition_exps
| unfold fold_right_and; repeat rewrite and_True; auto
].
Ltac forward_call_id01_wow' :=
let H := fresh in intro H;
eapply (semax_call_id01_wow
_ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ H);
clear H;
lazymatch goal with Frame := _ : list mpred |- _ => try clear Frame end;
[ apply Coq.Init.Logic.I
| cbv beta iota zeta; unfold_post; extensionality rho;
repeat rewrite exp_uncurry;
try rewrite no_post_exists; repeat rewrite exp_unfold;
first [apply exp_congr; intros ?vret; reflexivity
| give_EX_warning
]
| unify_postcondition_exps
| unfold fold_right_and; repeat rewrite and_True; auto
].
Ltac forward_call_id00_wow'  :=
let H := fresh in intro H;
eapply (semax_call_id00_wow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ H);
clear H;
lazymatch goal with Frame := _ : list mpred |- _ => try clear Frame end;
[ check_result_type
| cbv beta iota zeta; unfold_post; extensionality rho;
repeat rewrite exp_uncurry;
try rewrite no_post_exists0;
repeat rewrite exp_unfold;
first [reflexivity | extensionality; simpl; reflexivity | give_EX_warning]
| unify_postcondition_exps
| unfold fold_right_and; repeat rewrite and_True; auto
].
Ltac fwd_call'_dep ts witness :=
lazymatch goal with
| |- semax _ _ (Ssequence (Scall _ _ _) _) _ =>
eapply semax_seq';
[prove_call_setup' ts witness;
clear_Delta_specs; clear_MORE_POST;
[ .. |
lazymatch goal with
| |- _ -> semax _ _ (Scall (Some _) _ _) _ =>
forward_call_id1_wow'
| |- call_setup2' _ _ _ _ _ _ _ _ _ _ _ _ ?retty _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ->
semax _ _ (Scall None _ _) _ =>
tryif (unify retty Tvoid)
then forward_call_id00_wow'
else forward_call_id01_wow'
end]
| after_forward_call ]
| |- semax _ _ (Ssequence (Ssequence (Scall (Some ?ret') _ _)
(Sset _ (Ecast (Etempvar ?ret'2 _) _))) _) _ =>
unify ret' ret'2;
eapply semax_seq';
[prove_call_setup' ts witness;
clear_Delta_specs; clear_MORE_POST;
[ .. | forward_call_id1_x_wow' ]
|  after_forward_call ]
| |- semax _ _ (Ssequence (Ssequence (Scall (Some ?ret') _ _)
(Sset _ (Etempvar ?ret'2 _))) _) _ =>
unify ret' ret'2;
eapply semax_seq';
[prove_call_setup' ts witness;
clear_Delta_specs; clear_MORE_POST;
[ .. | forward_call_id1_y_wow' ]
|  after_forward_call ]
| |- _ => rewrite <- seq_assoc; fwd_call'_dep ts witness
end.
Ltac fwd_call_dep ts witness :=
try lazymatch goal with
| |- semax _ _ (Scall _ _ _) _ => rewrite -> semax_seq_skip
end;
repeat lazymatch goal with
| |- semax _ _ (Ssequence (Ssequence (Ssequence _ _) _) _) _ =>
rewrite <- seq_assoc
end;
lazymatch goal with |- @semax ?CS _ ?Delta _ (Ssequence ?C _) _ =>
lazymatch C with context [Scall _ _ _] =>
fwd_call'_dep ts witness
end
end.
Tactic Notation "forward_call_dep" constr(ts) constr(witness) := fwd_call_dep ts witness.

Lemma PROP_into_SEP : forall P Q R, PROPx P (LOCALx Q (SEPx R)) =
PROPx [] (LOCALx Q (SEPx (!!fold_right and True P && emp :: R))).