let P be the Instructions of SCM+FSA -valued ManySortedSet of NAT ; :: thesis: for s being State of SCM+FSA
for I, J being Program of SCM+FSA
for a being read-write Int-Location st s . a = 0 & I is_closed_on Initialized s,P & I is_halting_on Initialized s,P holds
IExec ((if=0 (a,I,J)),P,s) = (IExec (I,P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))

let s be State of SCM+FSA; :: thesis: for I, J being Program of SCM+FSA
for a being read-write Int-Location st s . a = 0 & I is_closed_on Initialized s,P & I is_halting_on Initialized s,P holds
IExec ((if=0 (a,I,J)),P,s) = (IExec (I,P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))

let I, J be Program of SCM+FSA; :: thesis: for a being read-write Int-Location st s . a = 0 & I is_closed_on Initialized s,P & I is_halting_on Initialized s,P holds
IExec ((if=0 (a,I,J)),P,s) = (IExec (I,P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))

let a be read-write Int-Location ; :: thesis: ( s . a = 0 & I is_closed_on Initialized s,P & I is_halting_on Initialized s,P implies IExec ((if=0 (a,I,J)),P,s) = (IExec (I,P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) )
set I1 = I ';' (Stop SCM+FSA);
set s1 = s +* (Initialize ((intloc 0) .--> 1));
set P1 = P +* (I ';' (Stop SCM+FSA));
A1: I ';' (Stop SCM+FSA) c= P +* (I ';' (Stop SCM+FSA)) by FUNCT_4:26;
set s3 = s +* (Initialize ((intloc 0) .--> 1));
set P3 = P +* (if=0 (a,I,J));
set s4 = Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),1);
set i = a =0_goto ((card J) + 3);
B2: Initialize ((intloc 0) .--> 1) c= s +* (Initialize ((intloc 0) .--> 1)) by FUNCT_4:26;
Start-At (0,SCM+FSA) c= Initialize ((intloc 0) .--> 1) by FUNCT_4:26;
then A2: Start-At (0,SCM+FSA) c= s +* (Initialize ((intloc 0) .--> 1)) by B2, XBOOLE_1:1;
A3: if=0 (a,I,J) = (((a =0_goto ((card J) + 3)) ';' J) ';' (Goto ((card I) + 1))) ';' (I ';' (Stop SCM+FSA)) by SCMFSA6A:67;
A4: 0 in dom (if=0 (a,I,J)) by Lm2;
A5: (P +* (if=0 (a,I,J))) . 0 = (if=0 (a,I,J)) . 0 by A4, FUNCT_4:14
.= a =0_goto ((card J) + 3) by Lm3 ;
V: Initialize ((intloc 0) .--> 1) c= Initialized (if=0 (a,I,J)) by FUNCT_4:26;
then dom (Initialize ((intloc 0) .--> 1)) c= dom (Initialized (if=0 (a,I,J))) by RELAT_1:25;
then C11: not a in dom (Initialize ((intloc 0) .--> 1)) by SCMFSA6A:48;
X2: IC in dom (Initialize ((intloc 0) .--> 1)) by COMPOS_1:225;
then A6: IC (s +* (Initialize ((intloc 0) .--> 1))) = IC (Initialize ((intloc 0) .--> 1)) by FUNCT_4:14
.= IC (Initialized (if=0 (a,I,J))) by V, X2, GRFUNC_1:8
.= 0 by SCMFSA6A:46 ;
A7: Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),(0 + 1)) = Following ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),0))) by EXTPRO_1:4
.= Following ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1)))) by EXTPRO_1:3
.= Exec ((a =0_goto ((card J) + 3)),(s +* (Initialize ((intloc 0) .--> 1)))) by A6, A5, PBOOLE:158 ;
A10: if=0 (a,I,J) c= P +* (if=0 (a,I,J)) by FUNCT_4:26;
A12: dom (ProgramPart s) = NAT by COMPOS_1:34;
assume s . a = 0 ; :: thesis: ( not I is_closed_on Initialized s,P or not I is_halting_on Initialized s,P or IExec ((if=0 (a,I,J)),P,s) = (IExec (I,P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) )
then (s +* (Initialize ((intloc 0) .--> 1))) . a = 0 by C11, FUNCT_4:12;
then A13: IC (Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),1)) = (card J) + 3 by A7, SCMFSA_2:96;
A15: for f being FinSeq-Location holds (s +* (Initialize ((intloc 0) .--> 1))) . f = (Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),1)) . f by A7, SCMFSA_2:96;
for a being Int-Location holds (s +* (Initialize ((intloc 0) .--> 1))) . a = (Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),1)) . a by A7, SCMFSA_2:96;
then A16: DataPart (s +* (Initialize ((intloc 0) .--> 1))) = DataPart (Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),1)) by A15, SCMFSA6A:38;
card (((a =0_goto ((card J) + 3)) ';' J) ';' (Goto ((card I) + 1))) = (card ((Macro (a =0_goto ((card J) + 3))) ';' J)) + (card (Goto ((card I) + 1))) by SCMFSA6A:61
.= (card ((Macro (a =0_goto ((card J) + 3))) ';' J)) + 1 by SCMFSA8A:29
.= ((card (Macro (a =0_goto ((card J) + 3)))) + (card J)) + 1 by SCMFSA6A:61
.= ((card J) + 2) + 1 by COMPOS_1:150
.= (card J) + (2 + 1) ;
then A17: Reloc ((I ';' (Stop SCM+FSA)),((card J) + 3)) c= if=0 (a,I,J) by A3, Lm1;
A19: Reloc ((I ';' (Stop SCM+FSA)),((card J) + 3)) c= P +* (if=0 (a,I,J)) by A17, A10, XBOOLE_1:1;
assume A20: I is_closed_on Initialized s,P ; :: thesis: ( not I is_halting_on Initialized s,P or IExec ((if=0 (a,I,J)),P,s) = (IExec (I,P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) )
assume A21: I is_halting_on Initialized s,P ; :: thesis: IExec ((if=0 (a,I,J)),P,s) = (IExec (I,P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))
then A22: P +* (I ';' (Stop SCM+FSA)) halts_on s +* (Initialize ((intloc 0) .--> 1)) by A20, SCMFSA8A:55;
I ';' (Stop SCM+FSA) is_closed_on Initialized s,P by A20, A21, SCMFSA8A:46;
then A23: I ';' (Stop SCM+FSA) is_closed_on s +* (Initialize ((intloc 0) .--> 1)),P +* (I ';' (Stop SCM+FSA)) by Th9;
A24: CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),((LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) + 1)))) = CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),1)),(LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1)))))))) by EXTPRO_1:5
.= IncAddr ((CurInstr ((P +* (I ';' (Stop SCM+FSA))),(Comput ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))),(LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))))))),((card J) + 3)) by A2, A23, A13, A16, Th11, A19, A1
.= IncAddr ((halt SCM+FSA),((card J) + 3)) by A22, EXTPRO_1:def 14
.= halt SCM+FSA by COMPOS_1:93 ;
then A25: P +* (if=0 (a,I,J)) halts_on s +* (Initialize ((intloc 0) .--> 1)) by EXTPRO_1:30;
now
let l be Element of NAT ; :: thesis: ( l < (LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) + 1 implies CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),b1))) <> halt SCM+FSA )
assume A26: l < (LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) + 1 ; :: thesis: CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),b1))) <> halt SCM+FSA
A27: Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),0) = s +* (Initialize ((intloc 0) .--> 1)) by EXTPRO_1:3;
per cases ( l = 0 or l <> 0 ) ;
suppose l = 0 ; :: thesis: CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),b1))) <> halt SCM+FSA
hence CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),l))) <> halt SCM+FSA by A6, A5, A27, PBOOLE:158; :: thesis: verum
end;
suppose l <> 0 ; :: thesis: not CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),b1))) = halt SCM+FSA
then consider n being Nat such that
A28: l = n + 1 by NAT_1:6;
assume A29: CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),l))) = halt SCM+FSA ; :: thesis: contradiction
reconsider n = n as Element of NAT by ORDINAL1:def 13;
InsCode (CurInstr ((P +* (I ';' (Stop SCM+FSA))),(Comput ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))),n)))) = InsCode (IncAddr ((CurInstr ((P +* (I ';' (Stop SCM+FSA))),(Comput ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))),n)))),((card J) + 3))) by COMPOS_1:def 38
.= InsCode (CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),1)),n)))) by A2, A23, A13, A16, Th11, A19, A1
.= 0 by A28, A29, EXTPRO_1:5, SCMFSA_2:124 ;
then A30: CurInstr ((P +* (I ';' (Stop SCM+FSA))),(Comput ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))),n))) = halt SCM+FSA by SCMFSA_2:122;
n < LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1)))) by A26, A28, XREAL_1:8;
hence contradiction by A22, A30, EXTPRO_1:def 14; :: thesis: verum
end;
end;
end;
then for l being Element of NAT st CurInstr ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),l))) = halt SCM+FSA holds
(LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) + 1 <= l ;
then A31: LifeSpan ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1)))) = (LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) + 1 by A24, A25, EXTPRO_1:def 14;
A32: DataPart (Result ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) = DataPart (Comput ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))),(LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))))) by A20, A21, EXTPRO_1:23, SCMFSA8A:55
.= DataPart (Comput ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),1)),(LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))))) by A2, A23, A13, A16, Th11, A1, A19
.= DataPart (Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),((LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) + 1))) by EXTPRO_1:5
.= DataPart (Result ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))))) by A25, A31, EXTPRO_1:23 ;
A33: now
let x be set ; :: thesis: ( x in dom (IExec ((if=0 (a,I,J)),P,s)) implies (IExec ((if=0 (a,I,J)),P,s)) . b1 = ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . b1 )
A34: IExec ((I ';' (Stop SCM+FSA)),P,s) = (Result ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) +* (s | NAT) by SCMFSA6B:def 1;
A35: dom (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) = {(IC )} by FUNCOP_1:19;
A36: IExec ((if=0 (a,I,J)),P,s) = (Result ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))))) +* (s | NAT) by SCMFSA6B:def 1;
A37: dom (ProgramPart s) = NAT by COMPOS_1:34;
assume A38: x in dom (IExec ((if=0 (a,I,J)),P,s)) ; :: thesis: (IExec ((if=0 (a,I,J)),P,s)) . b1 = ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . b1
per cases ( x is Int-Location or x is FinSeq-Location or x = IC or x is Element of NAT ) by A38, SCMFSA6A:35;
suppose A39: x is Int-Location ; :: thesis: (IExec ((if=0 (a,I,J)),P,s)) . b1 = ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . b1
then x <> IC by SCMFSA_2:81;
then A40: not x in dom (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) by A35, TARSKI:def 1;
thus (IExec ((if=0 (a,I,J)),P,s)) . x = (Result ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))))) . x by A36, A39, A37, FUNCT_4:12, SCMFSA10:3
.= (Result ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) . x by A32, A39, SCMFSA6A:38
.= (IExec ((I ';' (Stop SCM+FSA)),P,s)) . x by A34, A39, A37, FUNCT_4:12, SCMFSA10:3
.= ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . x by A40, FUNCT_4:12 ; :: thesis: verum
end;
suppose A41: x is FinSeq-Location ; :: thesis: (IExec ((if=0 (a,I,J)),P,s)) . b1 = ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . b1
then x <> IC by SCMFSA_2:82;
then A42: not x in dom (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) by A35, TARSKI:def 1;
thus (IExec ((if=0 (a,I,J)),P,s)) . x = (Result ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))))) . x by A36, A41, A37, FUNCT_4:12, SCMFSA10:4
.= (Result ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) . x by A32, A41, SCMFSA6A:38
.= (IExec ((I ';' (Stop SCM+FSA)),P,s)) . x by A34, A41, A37, FUNCT_4:12, SCMFSA10:4
.= ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . x by A42, FUNCT_4:12 ; :: thesis: verum
end;
suppose A43: x = IC ; :: thesis: (IExec ((if=0 (a,I,J)),P,s)) . b1 = ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . b1
then A44: x in dom (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) by A35, TARSKI:def 1;
A45: not x in dom (s | NAT) by A43, A37, COMPOS_1:def 12;
A46: IC (Result ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) = (IExec ((I ';' (Stop SCM+FSA)),P,s)) . (IC ) by A34, A43, A45, FUNCT_4:12
.= IC ((IExec (I,P,s)) +* (Start-At ((card I),SCM+FSA))) by A20, A21, SCMFSA8A:57
.= card I by FUNCT_4:121 ;
thus (IExec ((if=0 (a,I,J)),P,s)) . x = (Result ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))))) . x by A36, A45, FUNCT_4:12
.= (Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),((LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))) + 1))) . x by A25, A31, EXTPRO_1:23
.= IC (Comput ((P +* (if=0 (a,I,J))),(Comput ((P +* (if=0 (a,I,J))),(s +* (Initialize ((intloc 0) .--> 1))),1)),(LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))))))) by A43, EXTPRO_1:5
.= (IC (Comput ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1))),(LifeSpan ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1)))))))) + ((card J) + 3) by A2, A23, A13, A16, Th11, A19, A1
.= (IC (Result ((P +* (I ';' (Stop SCM+FSA))),(s +* (Initialize ((intloc 0) .--> 1)))))) + ((card J) + 3) by A20, A21, EXTPRO_1:23, SCMFSA8A:55
.= (Start-At (((card I) + ((card J) + 3)),SCM+FSA)) . (IC ) by A46, FUNCOP_1:87
.= ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . x by A43, A44, FUNCT_4:14 ; :: thesis: verum
end;
suppose A47: x is Element of NAT ; :: thesis: (IExec ((if=0 (a,I,J)),P,s)) . b1 = ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . b1
then x <> IC by COMPOS_1:3;
then A48: not x in dom (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) by A35, TARSKI:def 1;
thus (IExec ((if=0 (a,I,J)),P,s)) . x = (s | NAT) . x by A36, A47, A12, FUNCT_4:14
.= (IExec ((I ';' (Stop SCM+FSA)),P,s)) . x by A34, A47, A12, FUNCT_4:14
.= ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) . x by A48, FUNCT_4:12 ; :: thesis: verum
end;
end;
end;
dom (IExec ((if=0 (a,I,J)),P,s)) = the carrier of SCM+FSA by PARTFUN1:def 4
.= dom ((IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA))) by PARTFUN1:def 4 ;
hence IExec ((if=0 (a,I,J)),P,s) = (IExec ((I ';' (Stop SCM+FSA)),P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) by A33, FUNCT_1:9
.= ((IExec (I,P,s)) +* (Start-At ((card I),SCM+FSA))) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) by A20, A21, SCMFSA8A:57
.= (IExec (I,P,s)) +* (Start-At ((((card I) + (card J)) + 3),SCM+FSA)) by FUNCT_4:122 ;
:: thesis: verum