let P be Instruction-Sequence of SCMPDS; for s being 0 -started State of SCMPDS
for I, J being halt-free parahalting shiftable Program of
for a being Int_position
for k1 being Integer holds IC (IExec ((if>0 (a,k1,I,J)),P,s)) = ((card I) + (card J)) + 2
let s be 0 -started State of SCMPDS; for I, J being halt-free parahalting shiftable Program of
for a being Int_position
for k1 being Integer holds IC (IExec ((if>0 (a,k1,I,J)),P,s)) = ((card I) + (card J)) + 2
let I, J be halt-free parahalting shiftable Program of ; for a being Int_position
for k1 being Integer holds IC (IExec ((if>0 (a,k1,I,J)),P,s)) = ((card I) + (card J)) + 2
let a be Int_position; for k1 being Integer holds IC (IExec ((if>0 (a,k1,I,J)),P,s)) = ((card I) + (card J)) + 2
let k1 be Integer; IC (IExec ((if>0 (a,k1,I,J)),P,s)) = ((card I) + (card J)) + 2
set IF = if>0 (a,k1,I,J);
A1:
( I is_closed_on s,P & I is_halting_on s,P )
by Th11, Th12;
A2:
( J is_closed_on s,P & J is_halting_on s,P )
by Th11, Th12;
per cases
( s . (DataLoc ((s . a),k1)) > 0 or s . (DataLoc ((s . a),k1)) <= 0 )
;
suppose
s . (DataLoc ((s . a),k1)) > 0
;
IC (IExec ((if>0 (a,k1,I,J)),P,s)) = ((card I) + (card J)) + 2then
IExec (
(if>0 (a,k1,I,J)),
P,
s)
= (IExec (I,P,s)) +* (Start-At ((((card I) + (card J)) + 2),SCMPDS))
by A1, Th61;
hence
IC (IExec ((if>0 (a,k1,I,J)),P,s)) = ((card I) + (card J)) + 2
by FUNCT_4:113;
verum end; suppose
s . (DataLoc ((s . a),k1)) <= 0
;
IC (IExec ((if>0 (a,k1,I,J)),P,s)) = ((card I) + (card J)) + 2then
IExec (
(if>0 (a,k1,I,J)),
P,
s)
= (IExec (J,P,s)) +* (Start-At ((((card I) + (card J)) + 2),SCMPDS))
by A2, Th62;
hence
IC (IExec ((if>0 (a,k1,I,J)),P,s)) = ((card I) + (card J)) + 2
by FUNCT_4:113;
verum end; end;