let c be Int-Location; :: thesis: for i being Instruction of SCM+FSA
for s being State of SCM+FSA st not c in UsedIntLoc i holds
(Exec (i,s)) . c = s . c
let i be Instruction of SCM+FSA; :: thesis: for s being State of SCM+FSA st not c in UsedIntLoc i holds
(Exec (i,s)) . c = s . c
let s be State of SCM+FSA; :: thesis: ( not c in UsedIntLoc i implies (Exec (i,s)) . c = s . c )
assume A1: not c in UsedIntLoc i ; :: thesis: (Exec (i,s)) . c = s . c
InsCode i <= 12 by SCMFSA_2:16;
then not not InsCode i = 0 & ... & not InsCode i = 12 ;

per cases then ( InsCode i = 0 or InsCode i = 1 or InsCode i = 2 or InsCode i = 3 or InsCode i = 4 or InsCode i = 5 or InsCode i = 6 or InsCode i = 7 or InsCode i = 8 or InsCode i = 9 or InsCode i = 10 or InsCode i = 11 or InsCode i = 12 ) ;

suppose InsCode i = 0 ; :: thesis: (Exec (i,s)) . c = s . c

then i = halt SCM+FSA by SCMFSA_2:95;
hence (Exec (i,s)) . c = s . c by EXTPRO_1:def 3; :: thesis: verum

end;

suppose InsCode i = 1 ; :: thesis: (Exec (i,s)) . c = s . c

then consider a, b being Int-Location such that
A2: i = a := b by SCMFSA_2:30;
UsedIntLoc i = {a,b} by A2, Th14;
then c <> a by A1, TARSKI:def 2;
hence (Exec (i,s)) . c = s . c by A2, SCMFSA_2:63; :: thesis: verum

end;

suppose InsCode i = 2 ; :: thesis: (Exec (i,s)) . c = s . c

then consider a, b being Int-Location such that
A3: i = AddTo (a,b) by SCMFSA_2:31;
UsedIntLoc i = {a,b} by A3, Th14;
then c <> a by A1, TARSKI:def 2;
hence (Exec (i,s)) . c = s . c by A3, SCMFSA_2:64; :: thesis: verum

end;

suppose InsCode i = 3 ; :: thesis: (Exec (i,s)) . c = s . c

then consider a, b being Int-Location such that
A4: i = SubFrom (a,b) by SCMFSA_2:32;
UsedIntLoc i = {a,b} by A4, Th14;
then c <> a by A1, TARSKI:def 2;
hence (Exec (i,s)) . c = s . c by A4, SCMFSA_2:65; :: thesis: verum

end;

suppose InsCode i = 4 ; :: thesis: (Exec (i,s)) . c = s . c

then consider a, b being Int-Location such that
A5: i = MultBy (a,b) by SCMFSA_2:33;
UsedIntLoc i = {a,b} by A5, Th14;
then c <> a by A1, TARSKI:def 2;
hence (Exec (i,s)) . c = s . c by A5, SCMFSA_2:66; :: thesis: verum

end;

suppose InsCode i = 5 ; :: thesis: (Exec (i,s)) . c = s . c

then consider a, b being Int-Location such that
A6: i = Divide (a,b) by SCMFSA_2:34;
UsedIntLoc i = {a,b} by A6, Th14;
then ( c <> a & c <> b ) by A1, TARSKI:def 2;
hence (Exec (i,s)) . c = s . c by A6, SCMFSA_2:67; :: thesis: verum

end;

suppose InsCode i = 6 ; :: thesis: (Exec (i,s)) . c = s . c

then ex l being Nat st i = goto l by SCMFSA_2:35;
hence (Exec (i,s)) . c = s . c by SCMFSA_2:69; :: thesis: verum

end;

suppose InsCode i = 7 ; :: thesis: (Exec (i,s)) . c = s . c

then ex l being Nat ex a being Int-Location st i = a =0_goto l by SCMFSA_2:36;
hence (Exec (i,s)) . c = s . c by SCMFSA_2:70; :: thesis: verum

end;

suppose InsCode i = 8 ; :: thesis: (Exec (i,s)) . c = s . c

then ex l being Nat ex a being Int-Location st i = a >0_goto l by SCMFSA_2:37;
hence (Exec (i,s)) . c = s . c by SCMFSA_2:71; :: thesis: verum

end;

suppose InsCode i = 9 ; :: thesis: (Exec (i,s)) . c = s . c

then consider a, b being Int-Location, f being FinSeq-Location such that
A7: i = b := (f,a) by SCMFSA_2:38;
UsedIntLoc i = {a,b} by A7, Th17;
then c <> b by A1, TARSKI:def 2;
hence (Exec (i,s)) . c = s . c by A7, SCMFSA_2:72; :: thesis: verum

end;

suppose InsCode i = 10 ; :: thesis: (Exec (i,s)) . c = s . c

then ex a, b being Int-Location ex f being FinSeq-Location st i = (f,a) := b by SCMFSA_2:39;
hence (Exec (i,s)) . c = s . c by SCMFSA_2:73; :: thesis: verum

end;

suppose InsCode i = 11 ; :: thesis: (Exec (i,s)) . c = s . c

then consider a being Int-Location, f being FinSeq-Location such that
A8: i = a :=len f by SCMFSA_2:40;
UsedIntLoc i = {a} by A8, Th18;
then c <> a by A1, TARSKI:def 1;
hence (Exec (i,s)) . c = s . c by A8, SCMFSA_2:74; :: thesis: verum

end;

suppose InsCode i = 12 ; :: thesis: (Exec (i,s)) . c = s . c

then ex a being Int-Location ex f being FinSeq-Location st i = f :=<0,...,0> a by SCMFSA_2:41;
hence (Exec (i,s)) . c = s . c by SCMFSA_2:75; :: thesis: verum

end;

end;