let s be State-consisting of 0 , 0 , 0 ,<%(halt SCM )%>, <*> INT ; ( ProgramPart s halts_on s & LifeSpan s = 0 & Result s = s )
set s0 = Computation s,0 ;
1 = len <%(halt SCM )%>
by AFINSQ_1:38;
then A1: s . (il. (0 + 0 )) =
<%(halt SCM )%> . 0
by Def1
.=
halt SCM
by AFINSQ_1:38
;
A2:
s = Computation s,0
by AMI_1:13;
then
s . (IC (Computation s,0 )) = halt SCM
by A1, Def1;
hence A3:
ProgramPart s halts_on s
by Th3; ( LifeSpan s = 0 & Result s = s )
CurInstr (Computation s,0 ) = halt SCM
by A1, A2, Def1;
hence
LifeSpan s = 0
by A3, AMI_1:def 46; Result s = s
IC s = il. 0
by Def1;
hence
Result s = s
by A1, A2, Th4; verum