let P be the Instructions of SCM+FSA -valued ManySortedSet of NAT ; :: thesis: for s being State of SCM+FSA
for I being Program of SCM+FSA st I is_closed_on s,P & I is_halting_on s,P holds
( CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) = goto 0 & ( for m being Element of NAT st m <= LifeSpan ((P +* I),(Initialize s)) holds
CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA ) )
A1: dom (id the Instructions of SCM+FSA) = the Instructions of SCM+FSA by RELAT_1:71;
let s be State of SCM+FSA; :: thesis: for I being Program of SCM+FSA st I is_closed_on s,P & I is_halting_on s,P holds
( CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) = goto 0 & ( for m being Element of NAT st m <= LifeSpan ((P +* I),(Initialize s)) holds
CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA ) )
let I be Program of SCM+FSA; :: thesis: ( I is_closed_on s,P & I is_halting_on s,P implies ( CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) = goto 0 & ( for m being Element of NAT st m <= LifeSpan ((P +* I),(Initialize s)) holds
CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA ) ) )
set s1 = Initialize s;
set P1 = P +* I;
set s2 = Initialize s;
set P2 = P +* (loop I);
A3: I c= P +* I by FUNCT_4:26;
assume that
A4: I is_closed_on s,P and
A5: I is_halting_on s,P ; :: thesis: ( CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) = goto 0 & ( for m being Element of NAT st m <= LifeSpan ((P +* I),(Initialize s)) holds
CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA ) )
set k = LifeSpan ((P +* I),(Initialize s));
A6: IC (Comput ((P +* I),(Initialize s),(LifeSpan ((P +* I),(Initialize s))))) in dom I by A4, SCMFSA7B:def 7;
A7: dom (loop I) = dom I by FUNCT_4:105;
A8: P +* I halts_on Initialize s by A5, SCMFSA7B:def 8;
then A9: CurInstr ((P +* I),(Comput ((P +* I),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) = halt SCM+FSA by EXTPRO_1:def 14;
A11: CurInstr ((P +* I),(Comput ((P +* I),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) = (P +* I) . (IC (Comput ((P +* I),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) by PBOOLE:158
.= I . (IC (Comput ((P +* I),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) by A3, A6, GRFUNC_1:8 ;
A12: rng I c= the Instructions of SCM+FSA by RELAT_1:def 19;
A13: (P +* (loop I)) /. (IC (Comput ((P +* (loop I)),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) = (P +* (loop I)) . (IC (Comput ((P +* (loop I)),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) by PBOOLE:158;
NPP (Comput ((P +* I),(Initialize s),(LifeSpan ((P +* I),(Initialize s))))) = NPP (Comput ((P +* (loop I)),(Initialize s),(LifeSpan ((P +* I),(Initialize s))))) by A4, A5, Th109;
hence A14: CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) = (P +* (loop I)) . (IC (Comput ((P +* I),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) by A13, COMPOS_1:230
.= (loop I) . (IC (Comput ((P +* I),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) by A6, A7, FUNCT_4:14
.= (((id the Instructions of SCM+FSA) +* ((halt SCM+FSA),(goto 0))) * I) . (IC (Comput ((P +* I),(Initialize s),(LifeSpan ((P +* I),(Initialize s)))))) by A12, FUNCT_7:118
.= ((id the Instructions of SCM+FSA) +* ((halt SCM+FSA),(goto 0))) . (halt SCM+FSA) by A9, A6, A11, FUNCT_1:23
.= goto 0 by A1, FUNCT_7:33 ;
:: thesis: for m being Element of NAT st m <= LifeSpan ((P +* I),(Initialize s)) holds
CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA
let m be Element of NAT ; :: thesis: ( m <= LifeSpan ((P +* I),(Initialize s)) implies CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA )
assume A15: m <= LifeSpan ((P +* I),(Initialize s)) ; :: thesis: CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA

per cases ( m < LifeSpan ((P +* I),(Initialize s)) or m = LifeSpan ((P +* I),(Initialize s)) ) by A15, XXREAL_0:1;

suppose A16: m < LifeSpan ((P +* I),(Initialize s)) ; :: thesis: CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA

then CurInstr ((P +* I),(Comput ((P +* I),(Initialize s),m))) <> halt SCM+FSA by A8, EXTPRO_1:def 14;
hence CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA by A4, A5, A16, Th110; :: thesis: verum

end;

suppose m = LifeSpan ((P +* I),(Initialize s)) ; :: thesis: CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA

hence CurInstr ((P +* (loop I)),(Comput ((P +* (loop I)),(Initialize s),m))) <> halt SCM+FSA by A14; :: thesis: verum

end;

end;