Section juicy.
Existing Instance JuicyMachineShell.
Existing Instance HybridMachineSig.HybridCoarseMachine.DilMem.
Existing Instance HybridMachineSig.HybridCoarseMachine.scheduler.
Context (ge : genv).
Inductive jmsafe : nat -> cm_state -> Prop :=
| jmsafe_0 m tr sch tp : jmsafe 0 (m, (tr, sch, tp))
| jmsafe_halted n m tr tp : jmsafe n (m, (tr, nil, tp))
| jmsafe_core n m m' tr tr' sch (tp tp' : jstate ge):
JuicyMachine.machine_step(Sem := JSem) sch tr tp m sch tr' tp' m' ->
tp_bupd (fun tp' => jmsafe n (m', (tr', sch, tp'))) tp' ->
jmsafe (S n) (m, (tr, sch, tp))
| jmsafe_sch n m m' i tr tr' sch (tp tp' : jstate ge):
JuicyMachine.machine_step(Sem := JSem) (i :: sch) tr tp m sch tr' tp' m' ->
(forall sch', tp_bupd (fun tp' => jmsafe n (m', (tr', sch', tp'))) tp') ->
jmsafe (S n) (m, (tr, i :: sch, tp)).

Lemma schstep_norun i sch tr tr' tp m tp' m' :
JuicyMachine.machine_step(Sem := JSem) (i :: sch) tr tp m sch tr' tp' m' ->
unique_Krun tp (i :: sch) ->
(1 < pos.n (num_threads tp'))%nat ->
no_Krun(ge := ge) tp'.