let s be State of SCMPDS ; for I being halt-free parahalting Program of SCMPDS
for k being Element of NAT st Initialize I c= s & k < LifeSpan (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I)) holds
CurInstr (ProgramPart (Comput (ProgramPart s),s,k)),(Comput (ProgramPart s),s,k) <> halt SCMPDS
let I be halt-free parahalting Program of SCMPDS ; for k being Element of NAT st Initialize I c= s & k < LifeSpan (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I)) holds
CurInstr (ProgramPart (Comput (ProgramPart s),s,k)),(Comput (ProgramPart s),s,k) <> halt SCMPDS
let k be Element of NAT ; ( Initialize I c= s & k < LifeSpan (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I)) implies CurInstr (ProgramPart (Comput (ProgramPart s),s,k)),(Comput (ProgramPart s),s,k) <> halt SCMPDS )
set sI = (Initialize s) +* (stop I);
set s1 = Comput (ProgramPart s),s,k;
set s2 = Comput (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I)),k;
assume that
A1:
Initialize I c= s
and
A2:
k < LifeSpan (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I))
; CurInstr (ProgramPart (Comput (ProgramPart s),s,k)),(Comput (ProgramPart s),s,k) <> halt SCMPDS
A3:
I c= Comput (ProgramPart s),s,k
by A1, AMI_1:81, SCMPDS_4:57;
A4:
IC (Comput (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I)),k) in dom I
by A2, Th28;
Y:
(ProgramPart (Comput (ProgramPart s),s,k)) /. (IC (Comput (ProgramPart s),s,k)) = (Comput (ProgramPart s),s,k) . (IC (Comput (ProgramPart s),s,k))
by COMPOS_1:38;
CurInstr (ProgramPart (Comput (ProgramPart s),s,k)),(Comput (ProgramPart s),s,k) =
(Comput (ProgramPart s),s,k) . (IC (Comput (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I)),k))
by A1, A2, Th29, Y, COMPOS_1:24
.=
I . (IC (Comput (ProgramPart ((Initialize s) +* (stop I))),((Initialize s) +* (stop I)),k))
by A3, A4, GRFUNC_1:8
;
hence
CurInstr (ProgramPart (Comput (ProgramPart s),s,k)),(Comput (ProgramPart s),s,k) <> halt SCMPDS
by A4, Def3; verum