Section MsgGhostVars.
Context {base_params : BaseParams}.
Context {multi_params : MultiParams base_params}.
Context {failure_params : FailureParams multi_params}.
Context {msg_ghost_params : MsgGhostMultiParams multi_params}.
Definition add_ghost_msg (me : name) (st : data) (ps : list (name * msg)) :
list (name * (ghost_msg * msg)) :=
map (fun m => (fst m, (write_ghost_msg me st, snd m))) ps.
Definition mgv_refined_net_handlers me src (m : ghost_msg * msg) st :=
let '(out, st', ps) := net_handlers me src (snd m) st in
(out, st', add_ghost_msg me st' ps).
Definition mgv_refined_input_handlers me inp st :=
let '(out, st', ps) := input_handlers me inp st in
(out, st', add_ghost_msg me st' ps).
Definition mgv_msg_eq_dec :
forall x y : ghost_msg * msg, {x = y} + {x <> y}.
Proof using.
intros.
decide equality; auto using msg_eq_dec, ghost_msg_eq_dec.
Qed.
Instance mgv_refined_base_params : BaseParams :=
{
data := data ;
input := input ;
output := output
}.
Instance mgv_refined_multi_params : MultiParams _ :=
{
name := name ;
msg := (ghost_msg * msg) ;
msg_eq_dec := mgv_msg_eq_dec ;
name_eq_dec := name_eq_dec ;
nodes := nodes ;
all_names_nodes := all_names_nodes ;
no_dup_nodes := no_dup_nodes ;
init_handlers := init_handlers;
net_handlers := mgv_refined_net_handlers ;
input_handlers := mgv_refined_input_handlers
}.
Instance mgv_refined_failure_params : FailureParams _ :=
{
reboot := (@reboot base_params multi_params failure_params)
}.
Definition mgv_deghost_packet p :=
@mkPacket _ multi_params
(@pSrc _ mgv_refined_multi_params p)
(pDst p)
(snd (pBody p)).
Definition mgv_deghost (net : @network _ mgv_refined_multi_params) : (@network _ multi_params).
refine (@mkNetwork _ multi_params
(map mgv_deghost_packet
(nwPackets net))
_
).
intros.
destruct net.
concludes.
auto.
Defined.
Arguments mgv_deghost_packet /_.
Instance mgv_refined_base_params_tot_map :
BaseParamsTotalMap mgv_refined_base_params base_params :=
{
tot_map_data := id ;
tot_map_input := id ;
tot_map_output := id
}.
Instance mgv_refined_multi_params_name_tot_map :
MultiParamsNameTotalMap mgv_refined_multi_params multi_params :=
{
tot_map_name := id ;
tot_map_name_inv := id ;
}.
Instance mgv_refined_multi_params_name_tot_map_bijective :
MultiParamsNameTotalMapBijective mgv_refined_multi_params_name_tot_map :=
{
tot_map_name_inv_inverse := fun _ => eq_refl ;
tot_map_name_inverse_inv := fun _ => eq_refl
}.
Instance mgv_refined_multi_params_tot_map :
MultiParamsMsgTotalMap mgv_refined_multi_params multi_params :=
{
tot_map_msg := snd ;
}.
Program Instance mgv_refined_multi_params_map_congruency :
MultiParamsTotalMapCongruency mgv_refined_base_params_tot_map
mgv_refined_multi_params_name_tot_map mgv_refined_multi_params_tot_map :=
{
tot_init_handlers_eq := fun _ => eq_refl ;
tot_net_handlers_eq := _ ;
tot_input_handlers_eq := _
}.
Next Obligation.
rewrite /tot_mapped_net_handlers /= /mgv_refined_net_handlers /= /tot_map_name_msgs /= /id /=.
repeat break_let.
find_inversion.
rewrite -/id map_id /= /add_ghost_msg /=.
elim l0 => //=.
case => n m' l IH.
find_inversion.
by find_rewrite; find_rewrite.
Qed.
Next Obligation.
rewrite /tot_mapped_input_handlers /=.
repeat break_let.
rewrite map_id /id /=.
unfold mgv_refined_input_handlers in *.
repeat break_let.
find_inversion.
elim l1 => //=.
case => n m l.
move => IH.
find_inversion.
by find_rewrite; find_rewrite.
Qed.
Instance mgv_refined_failure_params_map_congruency :
FailureParamsTotalMapCongruency mgv_refined_failure_params
failure_params mgv_refined_base_params_tot_map :=
{
tot_reboot_eq := fun _ => eq_refl
}.
Proof using.
elim => //.
move => tr l IH.
rewrite /= IH.
break_let.
break_match => //.
by rewrite map_id.
Qed.

Theorem mgv_ghost_simulation_1 :
forall net net' failed failed' out,
@step_failure _ _ mgv_refined_failure_params (failed, net) (failed', net') out ->
@step_failure _ _ failure_params (failed, mgv_deghost net) (failed', mgv_deghost net') out.