let s be State of SCM+FSA; :: thesis: for p being Instruction-Sequence of SCM+FSA
for a being Int-Location
for J being good Program of SCM+FSA st ProperTimesBody a,J,s,p holds
for k being Element of NAT st k <= s . a holds
((StepTimes (a,J,p,s)) . k) . (intloc 0) = 1
let p be Instruction-Sequence of SCM+FSA; :: thesis: for a being Int-Location
for J being good Program of SCM+FSA st ProperTimesBody a,J,s,p holds
for k being Element of NAT st k <= s . a holds
((StepTimes (a,J,p,s)) . k) . (intloc 0) = 1
let a be Int-Location ; :: thesis: for J being good Program of SCM+FSA st ProperTimesBody a,J,s,p holds
for k being Element of NAT st k <= s . a holds
((StepTimes (a,J,p,s)) . k) . (intloc 0) = 1
let J be good Program of SCM+FSA; :: thesis: ( ProperTimesBody a,J,s,p implies for k being Element of NAT st k <= s . a holds
((StepTimes (a,J,p,s)) . k) . (intloc 0) = 1 )
set I = J;
set ST = StepTimes (a,J,p,s);
set au = 1 -stRWNotIn ({a} \/ (UsedIntLoc J));
set Is = Initialized s;
defpred S₁[ Element of NAT ] means ( $1 <= s . a implies ((StepTimes (a,J,p,s)) . $1) . (intloc 0) = 1 );
assume A1: ProperTimesBody a,J,s,p ; :: thesis: for k being Element of NAT st k <= s . a holds
((StepTimes (a,J,p,s)) . k) . (intloc 0) = 1
A2: for k being Element of NAT st S₁[k] holds
S₁[k + 1]

proof

let k be Element of NAT ; :: thesis: ( S₁[k] implies S₁[k + 1] )
assume that
A3: ( k <= s . a implies ((StepTimes (a,J,p,s)) . k) . (intloc 0) = 1 ) and
A4: k + 1 <= s . a ; :: thesis: ((StepTimes (a,J,p,s)) . (k + 1)) . (intloc 0) = 1
reconsider sa = s . a as Element of NAT by A4, INT_1:3;
A5: k < sa by A4, NAT_1:13;
then ( J is_closed_on (StepTimes (a,J,p,s)) . k,p +* (times* (a,J)) & J is_halting_on (StepTimes (a,J,p,s)) . k,p +* (times* (a,J)) ) by A1, Def4;
hence ((StepTimes (a,J,p,s)) . (k + 1)) . (intloc 0) = 1 by A3, A5, Th12; :: thesis: verum

end;

A6: S₁[ 0 ]

proof

assume 0 <= s . a ; :: thesis: ((StepTimes (a,J,p,s)) . 0) . (intloc 0) = 1
thus ((StepTimes (a,J,p,s)) . 0) . (intloc 0) = (Exec (((1 -stRWNotIn ({a} \/ (UsedIntLoc J))) := a),(Initialized s))) . (intloc 0) by SCMFSA_9:def 5
.= (Initialized s) . (intloc 0) by SCMFSA_2:63
.= 1 by SCMFSA6A:38 ; :: thesis: verum

end;

thus for k being Element of NAT holds S₁[k] from NAT_1:sch 1(A6, A2); :: thesis: verum