End Executions.
Section FineGrainedExecutions.
Context
{Sem : Semantics}
{initU : seq.seq nat}
{SemAx : CoreLanguage.SemAxioms}.
Existing Instance dryResources.
Existing Instance HybridFineMachine.scheduler.
Existing Instance OrdinalPool.OrdinalThreadPool.
Existing Instance DryHybridMachineSig.
Existing Instance FineDilMem.
Existing Instance dryFineMach.

Lemma multi_step_containsThread :
forall U tp tr m U' tp' tr' m' i
(Hexec: multi_step (U, tr, tp) m (U', tr', tp') m'),
containsThread tp i -> containsThread tp' i.