let s be State of SCM+FSA ; for I being parahalting Program of SCM+FSA
for a being read-write Int-Location st not a in UsedIntLoc I holds
(IExec I,s) . a = s . a
let I be parahalting Program of SCM+FSA ; for a being read-write Int-Location st not a in UsedIntLoc I holds
(IExec I,s) . a = s . a
let a be read-write Int-Location ; ( not a in UsedIntLoc I implies (IExec I,s) . a = s . a )
assume A1:
not a in UsedIntLoc I
; (IExec I,s) . a = s . a
ProgramPart (s +* (Initialized I)) halts_on s +* (Initialized I)
by Th19, FUNCT_4:26;
then consider n being Element of NAT such that
A2:
Result (s +* (Initialized I)) = Comput (ProgramPart (s +* (Initialized I))),(s +* (Initialized I)),n
and
CurInstr (ProgramPart (Result (s +* (Initialized I)))),(Result (s +* (Initialized I))) = halt SCM+FSA
by AMI_1:def 22;
A3:
not a in dom (Initialized I)
by SCMFSA6A:48;
a is not Element of NAT
by SCMFSA_2:84;
then
not a in NAT
;
then
not a in dom (s | NAT )
by RELAT_1:86;
then A4:
(IExec I,s) . a = (Result (s +* (Initialized I))) . a
by FUNCT_4:12;
A5:
I +* (Start-At 0 ,SCM+FSA ) c= s +* (Initialized I)
by Th8, FUNCT_4:26;
then
for m being Element of NAT st m < n holds
IC (Comput (ProgramPart (s +* (Initialized I))),(s +* (Initialized I)),m) in dom I
by Def2;
hence (IExec I,s) . a =
(s +* (Initialized I)) . a
by A1, A4, A2, A5, SF_MASTR:69
.=
s . a
by A3, FUNCT_4:12
;
verum