let s be State of SCM+FSA; :: thesis: for p being Instruction-Sequence of SCM+FSA
for a being Int-Location
for I being Program of SCM+FSA st s . (intloc 0) = 1 holds
((StepTimes (a,I,p,s)) . 0) | ((UsedIntLoc I) \/ FinSeq-Locations) = s | ((UsedIntLoc I) \/ FinSeq-Locations)
let p be Instruction-Sequence of SCM+FSA; :: thesis: for a being Int-Location
for I being Program of SCM+FSA st s . (intloc 0) = 1 holds
((StepTimes (a,I,p,s)) . 0) | ((UsedIntLoc I) \/ FinSeq-Locations) = s | ((UsedIntLoc I) \/ FinSeq-Locations)
let a be Int-Location; :: thesis: for I being Program of SCM+FSA st s . (intloc 0) = 1 holds
((StepTimes (a,I,p,s)) . 0) | ((UsedIntLoc I) \/ FinSeq-Locations) = s | ((UsedIntLoc I) \/ FinSeq-Locations)
let I be Program of SCM+FSA; :: thesis: ( s . (intloc 0) = 1 implies ((StepTimes (a,I,p,s)) . 0) | ((UsedIntLoc I) \/ FinSeq-Locations) = s | ((UsedIntLoc I) \/ FinSeq-Locations) )
set ST = StepTimes (a,I,p,s);
set au = 1 -stRWNotIn ({a} \/ (UsedIntLoc I));
set Is = Initialized s;
set UILI = UsedIntLoc I;
assume s . (intloc 0) = 1 ; :: thesis: ((StepTimes (a,I,p,s)) . 0) | ((UsedIntLoc I) \/ FinSeq-Locations) = s | ((UsedIntLoc I) \/ FinSeq-Locations)
then A1: DataPart (Initialized s) = DataPart s by SCMFSA_M:19;

A2: now :: thesis: for x being Int-Location st x in UsedIntLoc I holds
((StepTimes (a,I,p,s)) . 0) . x = s . x

let x be Int-Location; :: thesis: ( x in UsedIntLoc I implies ((StepTimes (a,I,p,s)) . 0) . x = s . x )
A3: not 1 -stRWNotIn ({a} \/ (UsedIntLoc I)) in {a} \/ (UsedIntLoc I) by SCMFSA_M:25;
assume x in UsedIntLoc I ; :: thesis: ((StepTimes (a,I,p,s)) . 0) . x = s . x
then A4: 1 -stRWNotIn ({a} \/ (UsedIntLoc I)) <> x by A3, XBOOLE_0:def 3;
thus ((StepTimes (a,I,p,s)) . 0) . x = (Exec (((1 -stRWNotIn ({a} \/ (UsedIntLoc I))) := a),(Initialized s))) . x by SCMFSA_9:def 5
.= (Initialized s) . x by A4, SCMFSA_2:63
.= s . x by A1, SCMFSA_M:2 ; :: thesis: verum

end;

now :: thesis: for x being FinSeq-Location holds ((StepTimes (a,I,p,s)) . 0) . x = s . x

let x be FinSeq-Location ; :: thesis: ((StepTimes (a,I,p,s)) . 0) . x = s . x
thus ((StepTimes (a,I,p,s)) . 0) . x = (Exec (((1 -stRWNotIn ({a} \/ (UsedIntLoc I))) := a),(Initialized s))) . x by SCMFSA_9:def 5
.= (Initialized s) . x by SCMFSA_2:63
.= s . x by SCMFSA_M:37 ; :: thesis: verum

end;

hence ((StepTimes (a,I,p,s)) . 0) | ((UsedIntLoc I) \/ FinSeq-Locations) = s | ((UsedIntLoc I) \/ FinSeq-Locations) by A2, SCMFSA_M:28; :: thesis: verum