set C = if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA );
set i = (insloc ((card I) + 4)) .--> (goto (insloc 0 ));
set P = (if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA )) +* ((insloc ((card I) + 4)) .--> (goto (insloc 0 )));
( card (if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA )) = (card I) + 6 & (card I) + 4 < (card I) + 6 )
by Th1, XREAL_1:8;
then
insloc ((card I) + 4) in dom (if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA ))
by SCMFSA6A:15;
then A1:
{(insloc ((card I) + 4))} c= dom (if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA ))
by ZFMISC_1:37;
A2: dom ((if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA )) +* ((insloc ((card I) + 4)) .--> (goto (insloc 0 )))) =
(dom (if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA ))) \/ (dom ((insloc ((card I) + 4)) .--> (goto (insloc 0 ))))
by FUNCT_4:def 1
.=
(dom (if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA ))) \/ {(insloc ((card I) + 4))}
by FUNCOP_1:19
.=
dom (if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA ))
by A1, XBOOLE_1:12
;
(if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA )) +* ((insloc ((card I) + 4)) .--> (goto (insloc 0 ))) is initial
proof
let m,
n be
Nat;
SCMNORM:def 1 ( not n in dom ((if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA )) +* ((insloc ((card I) + 4)) .--> (goto (insloc 0 )))) or n <= m or m in dom ((if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA )) +* ((insloc ((card I) + 4)) .--> (goto (insloc 0 )))) )
thus
( not
n in dom ((if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA )) +* ((insloc ((card I) + 4)) .--> (goto (insloc 0 )))) or
n <= m or
m in dom ((if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA )) +* ((insloc ((card I) + 4)) .--> (goto (insloc 0 )))) )
by A2, SCMNORM:def 1;
verum
end;
hence
(if=0 a,(I ';' (Goto (insloc 0 ))),(Stop SCM+FSA )) +* ((insloc ((card I) + 4)) .--> (goto (insloc 0 ))) is Program of
; verum