(*Expresses that the evolution soundly and completely tracks what happened during
  related coresteps. sm_locally_allocated is typically be used in conjunction with
  intern_incr, so extern mu = extern mu', and equalities
  (pSrc,pTgt,fSrc,fTgt)=(pSrc',pTgt',fSrc',fTgt') hold, too.*)
Definition sm_locally_allocated (mu mu' : SM_Injection) (m1 m2 m1' m2':mem):Prop :=
  match mu, mu' with
     Build_SM_Injection locBSrc locBTgt pSrc pTgt local extBSrc extBTgt fSrc fTgt extern,
     Build_SM_Injection locBSrc' locBTgt' pSrc' pTgt' local' extBSrc' extBTgt' fSrc' fTgt' extern'
  =>    locBSrc' = (fun b => orb (locBSrc b) (freshloc m1 m1' b))
     /\ locBTgt' = (fun b => orb (locBTgt b) (freshloc m2 m2' b))
     /\ extBSrc' = extBSrc
     /\ extBTgt' = extBTgt
  end.

Lemma sm_locally_allocatedChar: forall mu mu' m1 m2 m1' m2', sm_locally_allocated mu mu' m1 m2 m1' m2' <-> ( DomSrc mu' = (fun b => orb (DomSrc mu b) (freshloc m1 m1' b)) /\ DomTgt mu' = (fun b => orb (DomTgt mu b) (freshloc m2 m2' b)) /\ locBlocksSrc mu' = (fun b => orb (locBlocksSrc mu b) (freshloc m1 m1' b)) /\ locBlocksTgt mu' = (fun b => orb (locBlocksTgt mu b) (freshloc m2 m2' b)) /\ extBlocksSrc mu' = extBlocksSrc mu /\ extBlocksTgt mu' = extBlocksTgt mu).