let a, b be Int-Location ; for s being State of SCM+FSA holds
( (Exec (Divide a,b),s) . (IC SCM+FSA ) = succ (IC s) & ( a <> b implies (Exec (Divide a,b),s) . a = (s . a) div (s . b) ) & (Exec (Divide a,b),s) . b = (s . a) mod (s . b) & ( for c being Int-Location st c <> a & c <> b holds
(Exec (Divide a,b),s) . c = s . c ) & ( for f being FinSeq-Location holds (Exec (Divide a,b),s) . f = s . f ) )
let s be State of SCM+FSA ; ( (Exec (Divide a,b),s) . (IC SCM+FSA ) = succ (IC s) & ( a <> b implies (Exec (Divide a,b),s) . a = (s . a) div (s . b) ) & (Exec (Divide a,b),s) . b = (s . a) mod (s . b) & ( for c being Int-Location st c <> a & c <> b holds
(Exec (Divide a,b),s) . c = s . c ) & ( for f being FinSeq-Location holds (Exec (Divide a,b),s) . f = s . f ) )
consider A, B being Data-Location such that
A1:
a = A
and
A2:
b = B
and
A3:
Divide a,b = Divide A,B
by Def15;
reconsider S = (s | SCM-Memory ) +* (NAT --> (Divide A,B)) as State of SCM by Th73;
A4:
Exec (Divide a,b),s = (s +* (Exec (Divide A,B),S)) +* (s | NAT )
by A3, Th75;
hence (Exec (Divide a,b),s) . (IC SCM+FSA ) =
(Exec (Divide A,B),S) . (IC SCM )
by Th78
.=
succ (IC S)
by AMI_3:12
.=
succ (IC s)
by Th88
;
( ( a <> b implies (Exec (Divide a,b),s) . a = (s . a) div (s . b) ) & (Exec (Divide a,b),s) . b = (s . a) mod (s . b) & ( for c being Int-Location st c <> a & c <> b holds
(Exec (Divide a,b),s) . c = s . c ) & ( for f being FinSeq-Location holds (Exec (Divide a,b),s) . f = s . f ) )
hereby ( (Exec (Divide a,b),s) . b = (s . a) mod (s . b) & ( for c being Int-Location st c <> a & c <> b holds
(Exec (Divide a,b),s) . c = s . c ) & ( for f being FinSeq-Location holds (Exec (Divide a,b),s) . f = s . f ) )
assume A5:
a <> b
;
(Exec (Divide a,b),s) . a = (s . a) div (s . b)thus (Exec (Divide a,b),s) . a =
(Exec (Divide A,B),S) . A
by A1, A4, Th79
.=
(S . A) div (S . B)
by A1, A2, A5, AMI_3:12
.=
(S . A) div (s . b)
by A2, Th80
.=
(s . a) div (s . b)
by A1, Th80
;
verum
end;
thus (Exec (Divide a,b),s) . b =
(Exec (Divide A,B),S) . B
by A2, A4, Th79
.=
(S . A) mod (S . B)
by AMI_3:12
.=
(S . A) mod (s . b)
by A2, Th80
.=
(s . a) mod (s . b)
by A1, Th80
; ( ( for c being Int-Location st c <> a & c <> b holds
(Exec (Divide a,b),s) . c = s . c ) & ( for f being FinSeq-Location holds (Exec (Divide a,b),s) . f = s . f ) )
hereby for f being FinSeq-Location holds (Exec (Divide a,b),s) . f = s . f
let c be
Int-Location ;
( c <> a & c <> b implies (Exec (Divide a,b),s) . c = s . c )assume A6:
(
c <> a &
c <> b )
;
(Exec (Divide a,b),s) . c = s . creconsider C =
c as
Data-Location by Th25;
thus (Exec (Divide a,b),s) . c =
(Exec (Divide A,B),S) . C
by A4, Th79
.=
S . C
by A1, A2, A6, AMI_3:12
.=
s . c
by Th80
;
verum
end;
let f be FinSeq-Location ; (Exec (Divide a,b),s) . f = s . f
A9:
not f in dom (Exec (Divide A,B),S)
by Th68;
dom (s | NAT ) = (dom s) /\ NAT
by RELAT_1:90;
then
not f in dom (s | NAT )
by A7, XBOOLE_0:def 4;
hence (Exec (Divide a,b),s) . f =
(s +* (Exec (Divide A,B),S)) . f
by A4, FUNCT_4:12
.=
s . f
by A9, FUNCT_4:12
;
verum