let l be Instruction-Location of SCM+FSA ; :: thesis: for s being State of SCM+FSA holds
( (Exec (goto l),s) . (IC SCM+FSA ) = l & ( for c being Int-Location holds (Exec (goto l),s) . c = s . c ) & ( for f being FinSeq-Location holds (Exec (goto l),s) . f = s . f ) )
let s be State of SCM+FSA ; :: thesis: ( (Exec (goto l),s) . (IC SCM+FSA ) = l & ( for c being Int-Location holds (Exec (goto l),s) . c = s . c ) & ( for f being FinSeq-Location holds (Exec (goto l),s) . f = s . f ) )
consider La being Instruction-Location of SCM such that
A1:
l = La
and
A2:
goto l = goto La
by Def16;
reconsider S = (s | SCM-Memory ) +* (NAT --> (goto La)) as State of SCM by SCMFSA_1:18;
A3:
Exec (goto l),s = (s +* (Exec (goto La),S)) +* (s | NAT )
by A2, Th75;
hence (Exec (goto l),s) . (IC SCM+FSA ) =
(Exec (goto La),S) . (IC SCM )
by Th78
.=
l
by A1, AMI_3:13
;
:: thesis: ( ( for c being Int-Location holds (Exec (goto l),s) . c = s . c ) & ( for f being FinSeq-Location holds (Exec (goto l),s) . f = s . f ) )
let f be FinSeq-Location ; :: thesis: (Exec (goto l),s) . f = s . f
A4:
dom (s | NAT ) = (dom s) /\ NAT
by RELAT_1:90;
then A6:
not f in dom (s | NAT )
by A4, XBOOLE_0:def 4;
A7:
not f in dom (Exec (goto La),S)
by Th68;
thus (Exec (goto l),s) . f =
(s +* (Exec (goto La),S)) . f
by A3, A6, FUNCT_4:12
.=
s . f
by A7, FUNCT_4:12
; :: thesis: verum