let P be Instruction-Sequence of SCM+FSA; :: thesis: for s being State of SCM+FSA
for I being InitHalting good really-closed MacroInstruction of SCM+FSA
for b being Int-Location
for a being read-write Int-Location st s . a > 0 & while>0 (a,I) is InitHalting holds
(IExec ((while>0 (a,I)),P,s)) . b = (IExec ((while>0 (a,I)),P,(IExec (I,P,s)))) . b

let s be State of SCM+FSA; :: thesis: for I being InitHalting good really-closed MacroInstruction of SCM+FSA
for b being Int-Location
for a being read-write Int-Location st s . a > 0 & while>0 (a,I) is InitHalting holds
(IExec ((while>0 (a,I)),P,s)) . b = (IExec ((while>0 (a,I)),P,(IExec (I,P,s)))) . b

let I be InitHalting good really-closed MacroInstruction of SCM+FSA ; :: thesis: for b being Int-Location
for a being read-write Int-Location st s . a > 0 & while>0 (a,I) is InitHalting holds
(IExec ((while>0 (a,I)),P,s)) . b = (IExec ((while>0 (a,I)),P,(IExec (I,P,s)))) . b

let b be Int-Location; :: thesis: for a being read-write Int-Location st s . a > 0 & while>0 (a,I) is InitHalting holds
(IExec ((while>0 (a,I)),P,s)) . b = (IExec ((while>0 (a,I)),P,(IExec (I,P,s)))) . b

let a be read-write Int-Location; :: thesis: ( s . a > 0 & while>0 (a,I) is InitHalting implies (IExec ((while>0 (a,I)),P,s)) . b = (IExec ((while>0 (a,I)),P,(IExec (I,P,s)))) . b )
set D = Data-Locations ;
assume that
A1: s . a > 0 and
A2: while>0 (a,I) is InitHalting ; :: thesis: (IExec ((while>0 (a,I)),P,s)) . b = (IExec ((while>0 (a,I)),P,(IExec (I,P,s)))) . b
b in Int-Locations by AMI_2:def 16;
then A3: b in Data-Locations by ;
then (IExec ((while>0 (a,I)),P,s)) . b = (DataPart (IExec ((while>0 (a,I)),P,s))) . b by FUNCT_1:49
.= (DataPart (IExec ((while>0 (a,I)),P,(IExec (I,P,s))))) . b by ;
hence (IExec ((while>0 (a,I)),P,s)) . b = (IExec ((while>0 (a,I)),P,(IExec (I,P,s)))) . b by ; :: thesis: verum