Section PartialMapExecutionSimulations.
Context {base_fst : BaseParams}.
Context {base_snd : BaseParams}.
Context {labeled_multi_fst : LabeledMultiParams base_fst}.
Context {labeled_multi_snd : LabeledMultiParams base_snd}.
Context {base_map : BaseParamsPartialMap base_fst base_snd}.
Context {name_map : MultiParamsNameTotalMap (@unlabeled_multi_params _ labeled_multi_fst) (@unlabeled_multi_params _ labeled_multi_snd)}.
Context {msg_map : MultiParamsMsgPartialMap (@unlabeled_multi_params _ labeled_multi_fst) (@unlabeled_multi_params _ labeled_multi_snd)}.
Context {label_map : LabeledMultiParamsLabelTotalMap labeled_multi_fst labeled_multi_snd}.
Context {name_map_bijective : MultiParamsNameTotalMapBijective name_map}.
Context {multi_map_congr : MultiParamsPartialMapCongruency base_map name_map msg_map}.
Context {multi_map_lb_congr : LabeledMultiParamsPartialMapCongruency base_map name_map msg_map label_map}.
Hypothesis label_eq_dec : forall x y : label, {x = y} + {x <> y}.
Hypothesis tot_map_label_injective :
forall l l', tot_map_label l = tot_map_label l' -> l = l'.
Hypothesis label_tot_mapped :
forall l, exists l', l = tot_map_label l'.
(* lb_step_failure *)
Proof using name_map_bijective multi_map_lb_congr multi_map_congr.
move => net net' failed failed' lb tr H_neq H_step.
have H_neq': lb <> label_silent.
rewrite -pt_lb_label_silent_fst_snd in H_neq.
move => H_eq.
by rewrite H_eq in H_neq.
invcs H_step => //=.
- destruct (pt_map_packet p) eqn:?; last first.
destruct p.
simpl in *.
break_match => //.
have H_q := @pt_lb_net_handlers_none _ _ _ _ _ _ _ _ multi_map_lb_congr pDst pSrc _ (nwState net pDst) Heqo0.
rewrite /tot_mapped_lb_net_handlers_label in H_q.
repeat break_let.
by tuple_inversion.
have H_eq_n: tot_map_name (pDst p) = pDst p0.
destruct p.
simpl in *.
break_match => //.
by find_injection.
rewrite H_eq_n.
apply (@LabeledStepFailure_deliver _ _ _ _ _ _ (filterMap pt_map_packet xs) (filterMap pt_map_packet ys) (filterMap pt_map_output out) (pt_map_data d) (filterMap (@pt_map_name_msg _ _ _ _ _ msg_map) l)).
* rewrite /pt_map_net /=.
find_rewrite.
by rewrite filterMap_app /= Heqo.
* rewrite -H_eq_n.
exact: not_in_failed_not_in.
* rewrite /pt_map_net /= -{2}H_eq_n tot_map_name_inv_inverse.
destruct p, p0.
simpl in *.
break_match => //.
find_injection.
clean.
have H_q := @pt_net_handlers_some _ _ _ _ _ _ _ multi_map_congr pDst pSrc pBody (nwState net pDst) _ Heqo0.
rewrite /pt_mapped_net_handlers /net_handlers /= /unlabeled_net_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
have H_q' := @pt_lb_net_handlers_some _ _ _ _ _ _ _ _ multi_map_lb_congr _ _ _ _ _ _ _ _ _ Heqo0 Heqp1.
rewrite /tot_mapped_lb_net_handlers_label in H_q'.
repeat break_let.
break_and.
by repeat tuple_inversion.
* rewrite /pt_map_net /= 2!filterMap_app.
by rewrite (filterMap_pt_map_packet_map_eq_some _ _ Heqo) (pt_map_update_eq_some _ _ _ Heqo).
- case H_i: pt_map_input => [inp'|]; last first.
have H_q := @pt_lb_input_handlers_none _ _ _ _ _ _ _ _ multi_map_lb_congr h _ (nwState net h) H_i.
rewrite /tot_mapped_lb_input_handlers_label /= in H_q.
repeat break_let.
by tuple_inversion.
apply (@LabeledStepFailure_input _ _ _ _ _ _ _ _ (pt_map_data d) (filterMap (@pt_map_name_msg _ _ _ _ _ msg_map) l)).
* exact: not_in_failed_not_in.
* have H_q := @pt_input_handlers_some _ _ _ _ _ _ _ multi_map_congr h _ (nwState net h) _ H_i.
rewrite /pt_mapped_input_handlers /input_handlers /= /unlabeled_input_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
have H_q' := @pt_lb_input_handlers_some _ _ _ _ _ _ _ _ multi_map_lb_congr _ _ _ _ _ _ _ _ H_i Heqp1.
break_and.
unfold tot_mapped_lb_input_handlers_label in *.
repeat break_let.
repeat tuple_inversion.
by rewrite /pt_map_net /= tot_map_name_inv_inverse.
* rewrite /pt_map_net /=.
rewrite filterMap_app filterMap_pt_map_packet_map_eq.
by rewrite -(@pt_map_update_eq  _ _ _ _ _ _ name_map_bijective).
Qed.
Proof using multi_map_lb_congr multi_map_congr.
move => net net' failed failed' lb tr H_eq H_step.
invcs H_step => //=.
- destruct (pt_map_packet p) eqn:?.
destruct p, p0.
simpl in *.
break_match_hyp => //.
find_injection.
have H_q := @pt_net_handlers_some _ _ _ _ _ _ _ multi_map_congr pDst pSrc pBody (nwState net pDst) _ Heqo0.
rewrite /pt_mapped_net_handlers /net_handlers /= /unlabeled_net_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
have H_q' := @pt_lb_net_handlers_some _ _ _ _ _ _ _ _ multi_map_lb_congr _ _ _ _ _ _ _ _ _ Heqo0 Heqp1.
break_and.
unfold tot_mapped_lb_net_handlers_label in *.
repeat break_let.
by repeat tuple_inversion.
destruct p.
simpl in *.
break_match_hyp => //.
have H_q := @pt_net_handlers_none _ _ _ _ _ _ _ multi_map_congr pDst pSrc pBody (nwState net pDst) out d l Heqo0.
rewrite /net_handlers /= /unlabeled_net_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
concludes.
break_and.
have H_q' := @pt_lb_net_handlers_none _ _ _ _ _ _ _ _ multi_map_lb_congr pDst pSrc _ (nwState net pDst) Heqo0.
rewrite /tot_mapped_lb_net_handlers_label in H_q'.
repeat break_let.
repeat tuple_inversion.
rewrite /pt_map_net /=.
rewrite filterMap_app.
rewrite filterMap_pt_map_name_msg_empty_eq //=.
rewrite H3.
rewrite filterMap_app /=.
repeat break_match => //.
rewrite -filterMap_app.
set s1 := fun _ => _.
set s2 := fun _ => _.
have H_eq_s: s1 = s2.
rewrite /s1 /s2.
apply functional_extensionality => n.
rewrite /update.
by break_if; first by rewrite H e.
rewrite -H_eq_s /s1 {s1 s2 H_eq_s}.
split => //.
exact: LabeledStepFailure_stutter.
- case H_i: (pt_map_input inp) => [inp'|].
have H_q := @pt_input_handlers_some _ _ _ _ _ _ _ multi_map_congr h _ (nwState net h) _ H_i.
rewrite /pt_mapped_input_handlers /input_handlers /= /unlabeled_input_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
have H_q' := @pt_lb_input_handlers_some _ _ _ _ _ _ _ _ multi_map_lb_congr _ _ _ _ _ _ _ _ H_i Heqp1.
break_and.
unfold tot_mapped_lb_input_handlers_label in *.
repeat break_let.
by tuple_inversion.
have H_q := @pt_input_handlers_none _ _ _ _ _ _ _ multi_map_congr h _ (nwState net h) out d l H_i.
rewrite /input_handlers /= /unlabeled_input_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
concludes.
break_and.
have H_q' := @pt_lb_input_handlers_none _ _ _ _ _ _ _ _ multi_map_lb_congr h _ (nwState net h) H_i.
rewrite /tot_mapped_lb_input_handlers_label in H_q'.
repeat break_let.
repeat tuple_inversion.
rewrite /pt_map_net /=.
rewrite filterMap_app.
rewrite filterMap_pt_map_name_msg_empty_eq //=.
set s1 := fun _ => _.
set s2 := fun _ => _.
have H_eq_s: s1 = s2.
rewrite /s1 /s2.
apply functional_extensionality => n.
rewrite /update.
by break_if; first by rewrite H e.
rewrite -H_eq_s /s1 {s1 s2 H_eq_s}.
split; first exact: LabeledStepFailure_stutter.
by repeat find_rewrite.
- split => //; exact: LabeledStepFailure_stutter.
Qed.
(* lb_step_ordered_failure *)
Proof using name_map_bijective multi_map_lb_congr multi_map_congr.
move => net net' failed failed' lb tr H_neq H_step.
have H_neq': lb <> label_silent.
rewrite -pt_lb_label_silent_fst_snd in H_neq.
move => H_eq.
by rewrite H_eq in H_neq.
invcs H_step => //=.
- rewrite {2}/pt_map_onet /=.
case H_m: (@pt_map_msg _ _ _ _ msg_map m) => [m'|]; last first.
have H_q := @pt_lb_net_handlers_none _ _ _ _ _ _ _ _ multi_map_lb_congr to from _ (onwState net to) H_m.
rewrite /tot_mapped_lb_net_handlers_label in H_q.
repeat break_let.
by tuple_inversion.
apply (@LabeledStepOrderedFailure_deliver _ _ _ _ _ _ m' (filterMap (@pt_map_msg _ _ _ _ msg_map) ms) (filterMap pt_map_output out) (pt_map_data d) (filterMap (@pt_map_name_msg _ _ _ _ _ msg_map) l) (@tot_map_name _ _ _ _ name_map from) (@tot_map_name _ _ _ _ name_map to)).
* by rewrite /= 2!tot_map_name_inv_inverse /= H3 /= H_m.
* exact: not_in_failed_not_in.
* rewrite /pt_map_onet /= tot_map_name_inv_inverse.
have H_q := @pt_net_handlers_some _ _ _ _ _ _ _ multi_map_congr to from m (onwState net to) _ H_m.
rewrite /pt_mapped_net_handlers /net_handlers /= /unlabeled_net_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
have H_q' := @pt_lb_net_handlers_some _ _ _ _ _ _ _ _ multi_map_lb_congr _ _ _ _ _ _ _ _ _ H_m Heqp1.
rewrite /tot_mapped_lb_net_handlers_label in H_q'.
repeat break_let.
break_and.
by repeat tuple_inversion.
* rewrite (@collate_pt_map_update2_eq _ _ _ _ name_map).
set f1 := fun _ => pt_map_data _.
set f2 := update _ _ _ _.
have H_eq_f: f1 = f2.
rewrite /f1 /f2.
apply functional_extensionality => n.
rewrite /update.
break_if; break_if => //=; first by rewrite -e tot_map_name_inverse_inv in n0.
by rewrite e tot_map_name_inv_inverse in n0.
by rewrite H_eq_f.
* by rewrite -filterMap_pt_map_trace_ev_outputs_eq.
- rewrite {2}/pt_map_onet /=.
case H_i: pt_map_input => [inp'|]; last first.
have H_q := @pt_lb_input_handlers_none _ _ _ _ _ _ _ _ multi_map_lb_congr h inp (onwState net h) H_i.
rewrite /tot_mapped_lb_input_handlers_label in H_q.
repeat break_let.
by tuple_inversion.
apply (@LabeledStepOrderedFailure_input _ _ (@tot_map_name _ _ _ _ name_map h) _ _ _ _ (filterMap pt_map_output out) inp' (pt_map_data d) (filterMap (@pt_map_name_msg _ _ _ _ _ msg_map) l)).
* exact: not_in_failed_not_in.
* rewrite /pt_map_onet /= tot_map_name_inv_inverse.
have H_q := @pt_input_handlers_some _ _ _ _ _ _ _ multi_map_congr h inp (onwState net h) _ H_i.
rewrite /pt_mapped_input_handlers /input_handlers /= /unlabeled_input_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
have H_q' := @pt_lb_input_handlers_some _ _ _ _ _ _ _ _ multi_map_lb_congr _ _ _ _ _ _ _ _ H_i Heqp1.
rewrite /tot_mapped_lb_input_handlers_label in H_q'.
repeat break_let.
break_and.
by repeat tuple_inversion.
* rewrite {2}/pt_map_onet /=.
rewrite (@collate_pt_map_eq _ _ _ _ name_map).
set f1 := fun _ => pt_map_data _.
set f2 := update _ _ _ _.
have H_eq_f: f1 = f2.
rewrite /f1 /f2.
apply functional_extensionality => n.
rewrite /update.
break_if; break_if => //=; first by rewrite -e tot_map_name_inverse_inv in n0.
by rewrite e tot_map_name_inv_inverse in n0.
by rewrite H_eq_f.
* by rewrite -(@filterMap_pt_map_trace_ev_outputs_eq _ _ _ _ _ name_map out h).
Qed.
Proof using name_map_bijective multi_map_lb_congr multi_map_congr.
move => net net' failed failed' lb tr H_eq H_step.
invcs H_step => //=.
- rewrite {2}/pt_map_onet /=.
case H_m: (@pt_map_msg _ _ _ _ msg_map m) => [m'|].
have H_q := @pt_net_handlers_some _ _ _ _ _ _ _ multi_map_congr to from m (onwState net to) _ H_m.
rewrite /pt_mapped_net_handlers /net_handlers /= /unlabeled_net_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
have H_q' := @pt_lb_net_handlers_some _ _ _ _ _ _ _ _ multi_map_lb_congr _ _ _ _ _ _ _ _ _ H_m Heqp1.
break_and.
unfold tot_mapped_lb_net_handlers_label in *.
repeat break_let.
by repeat tuple_inversion.
have H_q := @pt_net_handlers_none _ _ _ _ _ _ _ multi_map_congr to from m (onwState net to) out d l H_m.
rewrite /net_handlers /= /unlabeled_net_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
concludes.
break_and.
have H_q' := @pt_lb_net_handlers_none _ _ _ _ _ _ _ _ multi_map_lb_congr to from _ (onwState net to) H_m.
rewrite /tot_mapped_lb_net_handlers_label in H_q'.
repeat break_let.
repeat tuple_inversion.
rewrite /pt_map_onet /=.
rewrite (@collate_pt_map_update2_eq _ _ _ _ name_map) /=.
rewrite H0 /=.
set p1 := fun _ _ => _.
set p2 := update2 _ _ _ _ _.
set s1 := fun _ => _.
set s2 := fun _ => _.
have H_eq_p: p1 = p2.
rewrite /p1 /p2 /update2.
apply functional_extensionality => src.
apply functional_extensionality => dst.
break_if => //.
break_and.
by rewrite -H2 -H5 2!tot_map_name_inv_inverse H3 /= H_m.
have H_eq_s: s1 = s2.
rewrite /s1 /s2 /update.
apply functional_extensionality => n.
break_if => //.
by rewrite H e.
rewrite H_eq_p H_eq_s.
split; first exact: LabeledStepOrderedFailure_stutter.
rewrite (@filterMap_pt_map_trace_ev_outputs_eq _ _ _ _ _ name_map out to).
by repeat find_rewrite.
- case H_i: (pt_map_input inp) => [inp'|].
have H_q := @pt_input_handlers_some _ _ _ _ _ _ _ multi_map_congr h _ (onwState net h) _ H_i.
rewrite /pt_mapped_input_handlers /input_handlers /= /unlabeled_input_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
have H_q' := @pt_lb_input_handlers_some _ _ _ _ _ _ _ _ multi_map_lb_congr _ _ _ _ _ _ _ _ H_i Heqp1.
break_and.
unfold tot_mapped_lb_input_handlers_label in *.
repeat break_let.
by tuple_inversion.
have H_q := @pt_input_handlers_none _ _ _ _ _ _ _ multi_map_congr h _ (onwState net h) out d l H_i.
rewrite /input_handlers /= /unlabeled_input_handlers in H_q.
repeat break_let.
repeat tuple_inversion.
concludes.
break_and.
have H_q' := @pt_lb_input_handlers_none _ _ _ _ _ _ _ _ multi_map_lb_congr h _ (onwState net h) H_i.
rewrite /tot_mapped_lb_input_handlers_label in H_q'.
repeat break_let.
repeat tuple_inversion.
rewrite /pt_map_onet /=.
rewrite (@collate_pt_map_eq _ _ _ _ name_map) H0 /=.
set s1 := fun _ => pt_map_data _.
set s2 := fun _ => pt_map_data _.
have H_eq_s: s1 = s2.
rewrite /s1 /s2.
apply functional_extensionality => n.
rewrite /update.
by break_if; first by rewrite H e.
rewrite -H_eq_s /s1 {s1 s2 H_eq_s}.
split; first exact: LabeledStepOrderedFailure_stutter.
rewrite (@filterMap_pt_map_trace_ev_outputs_eq _ _ _ _ _ name_map).
by repeat find_rewrite.
- by split => //; exact: LabeledStepOrderedFailure_stutter.
Qed.
Definition pt_map_onet_event e :=
{| evt_a := (List.map tot_map_name (fst e.(evt_a)), pt_map_onet (snd e.(evt_a))) ;
evt_l := tot_map_label e.(evt_l) ;
evt_trace := filterMap pt_map_trace_ev e.(evt_trace) |}.
Proof using.
by move => s; rewrite -map_Cons /= -{3}(recons s).
Qed.
Proof using name_map_bijective multi_map_lb_congr multi_map_congr label_eq_dec.
cofix c.
move => s H_exec.
rewrite -pt_map_onet_event_Map_unfold {1}/pt_map_onet_event /=.
inversion H_exec; subst => /=.
rewrite -pt_map_onet_event_Map_unfold /= /pt_map_onet_event /=.
case (label_eq_dec (tot_map_label (evt_l e)) label_silent) => H_eq.
apply: Cons_lb_step_exec.
- rewrite H_eq.
destruct e, e'.
destruct evt_a, evt_a0.
simpl in *.
by eapply lb_step_ordered_failure_pt_mapped_simulation_1_silent; eauto.
- destruct e, e'.
destruct evt_a, evt_a0.
apply (lb_step_ordered_failure_pt_mapped_simulation_1_silent H_eq) in H.
break_and.
simpl in *.
rewrite H0 filterMap_app.
by aggressive_rewrite_goal.
- pose s' := Cons e' s0.
rewrite (pt_map_onet_event_Map_unfold s').
exact: c.
apply: Cons_lb_step_exec => /=.
- destruct e, e'.
destruct evt_a, evt_a0.
simpl in *.
by eapply lb_step_ordered_failure_pt_mapped_simulation_1_non_silent; eauto.
- by rewrite H0 filterMap_app.
- pose s' := Cons e' s0.
rewrite (pt_map_onet_event_Map_unfold s').
exact: c.
Qed.
Proof using.
move => l.
apply: always_map.
apply: eventually_map.
case => e s.
rewrite /= /occurred /evt_l /=.
move => H_eq.
by rewrite H_eq.
Qed.
Proof using tot_map_label_injective.
move => l.
apply: always_map_conv.
apply: eventually_map_conv => //.
- exact: extensional_now.
- exact: extensional_now.
- case => e s.
rewrite /= /occurred /=.
move => H_eq.
exact: tot_map_label_injective.
Qed.
Hypothesis lb_step_ordered_failure_strong_fairness_enabled_pt_map_onet_eventually :
forall l, tot_map_label l <> label_silent ->
forall s, lb_step_execution lb_step_ordered_failure s ->
strong_fairness lb_step_ordered_failure label_silent s ->
enabled lb_step_ordered_failure (tot_map_label l) (pt_map_onet_event (hd s)) ->
eventually (now (enabled lb_step_ordered_failure l)) s.
Proof using lb_step_ordered_failure_strong_fairness_enabled_pt_map_onet_eventually.
move => l H_neq s H_exec H_fair.
have H_a: ((lb_step_execution lb_step_ordered_failure) /\_ (strong_fairness lb_step_ordered_failure label_silent)) s by auto.
move: H_a {H_exec H_fair}.
apply: always_map_conv_ext => {s}.
rewrite /and_tl /=.
move => x s0 [H_e H_w].
apply lb_step_execution_invar in H_e.
by apply strong_fairness_invar in H_w.
apply: eventually_map_conv_ext.
- exact: extensional_now.
- exact: extensional_now.
- apply extensional_and_tl.
* exact: lb_step_execution_extensional.
* exact: strong_fairness_extensional.
- rewrite /and_tl /=.
move => x s [H_e H_w].
apply lb_step_execution_invar in H_e.
by apply strong_fairness_invar in H_w.
- rewrite /and_tl.
case => /= x s [H_a H_w] H_en.
exact: lb_step_ordered_failure_strong_fairness_enabled_pt_map_onet_eventually.
Qed.
Hypothesis lb_step_ordered_failure_weak_fairness_always_enabled_pt_map_onet_continuously :
forall l, tot_map_label l <> label_silent ->
forall s, lb_step_execution lb_step_ordered_failure s ->
weak_fairness lb_step_ordered_failure label_silent s ->
always (now (enabled lb_step_ordered_failure (tot_map_label l))) (map pt_map_onet_event s) ->
continuously (now (enabled lb_step_ordered_failure l)) s.
Proof using lb_step_ordered_failure_weak_fairness_always_enabled_pt_map_onet_continuously.
move => l H_neq s H_exec H_fair.
have H_a: ((lb_step_execution lb_step_ordered_failure) /\_ (weak_fairness lb_step_ordered_failure label_silent)) s by auto.
move: H_a {H_exec H_fair}.
apply: eventually_map_conv_ext => {s}.
- apply extensional_always.
exact: extensional_now.
- apply extensional_always.
exact: extensional_now.
- apply extensional_and_tl.
* exact: lb_step_execution_extensional.
* exact: weak_fairness_extensional.
- rewrite /and_tl /=.
move => x s [H_e H_w].
apply lb_step_execution_invar in H_e.
by apply weak_fairness_invar in H_w.
- case => x s [H_a H_w] H_al.
simpl in *.
exact: lb_step_ordered_failure_weak_fairness_always_enabled_pt_map_onet_continuously.
Qed.
Proof using multi_map_lb_congr lb_step_ordered_failure_strong_fairness_enabled_pt_map_onet_eventually label_tot_mapped.
move => s.
rewrite /strong_fairness => H_exec H_fair l H_neq H_en.
have [l' H_l] := label_tot_mapped l.
rewrite H_l.
apply pt_map_onet_tot_map_label_event_inf_often_occurred.
apply H_fair; first by move => H_eq; rewrite H_eq pt_lb_label_silent_fst_snd in H_l.
rewrite H_l in H_en.
unfold inf_enabled in *.
apply: pt_map_onet_tot_map_labeled_event_inf_often_enabled => //.
move => H_eq.
by rewrite -H_l in H_eq.
Qed.
Proof using multi_map_lb_congr lb_step_ordered_failure_weak_fairness_always_enabled_pt_map_onet_continuously label_tot_mapped.
move => s.
rewrite /weak_fairness => H_exec H_fair l H_neq H_en.
have [l' H_l] := label_tot_mapped l.
rewrite H_l.
apply pt_map_onet_tot_map_label_event_inf_often_occurred.
apply H_fair; first by move => H_eq; rewrite H_eq pt_lb_label_silent_fst_snd in H_l.
rewrite H_l in H_en.
unfold cont_enabled in *.
apply: pt_map_onet_tot_map_labeled_event_state_continuously_enabled => //.
move => H_eq.
by rewrite -H_l in H_eq.
Qed.
Context {overlay_fst : NameOverlayParams (@unlabeled_multi_params _ labeled_multi_fst)}.
Context {overlay_snd : NameOverlayParams (@unlabeled_multi_params _ labeled_multi_snd)}.
Context {overlay_map_congr : NameOverlayParamsTotalMapCongruency overlay_fst overlay_snd name_map}.
Context {fail_msg_fst : FailMsgParams (@unlabeled_multi_params _ labeled_multi_fst)}.
Context {fail_msg_snd : FailMsgParams (@unlabeled_multi_params _ labeled_multi_snd)}.
Context {fail_msg_map_congr : FailMsgParamsPartialMapCongruency fail_msg_fst fail_msg_snd msg_map}.
Proof using overlay_map_congr name_map_bijective multi_map_congr fail_msg_map_congr.
move => e.
rewrite /= /pt_map_onet_event /= /event_step_star /=.
move => H_star.
destruct e, evt_a.
simpl in *.
exact: step_ordered_failure_pt_mapped_simulation_star_1.
Qed.

Lemma pt_map_onet_hd_step_ordered_failure_star_always :
forall s, event_step_star step_ordered_failure step_ordered_failure_init (hd s) ->
lb_step_execution lb_step_ordered_failure s ->
always (now (event_step_star step_ordered_failure step_ordered_failure_init)) (map pt_map_onet_event s).