let s be State of SCMPDS ; for I being halt-free Program of SCMPDS st I is_closed_on s & I is_halting_on s holds
IC (IExec I,s) = card I
let I be halt-free Program of SCMPDS ; ( I is_closed_on s & I is_halting_on s implies IC (IExec I,s) = card I )
set s1 = (Initialize s) +* (stop I);
I1:
(Initialize s) +* (stop I) = s +* (Initialize (stop I))
by SCMPDS_4:5;
assume that
A1:
I is_closed_on s
and
A2:
I is_halting_on s
; IC (IExec I,s) = card I
A3:
ProgramPart ((Initialize s) +* (stop I)) halts_on (Initialize s) +* (stop I)
by A2, Def3;
thus IC (IExec I,s) =
IC (Result (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I)))
by SCMPDS_5:22
.=
IC (Comput (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I)),(LifeSpan (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I))))
by A3, AMI_1:122
.=
card I
by A1, A2, Th43, I1
; verum