let s be State of SCM+FSA; for a being Int-Location
for p being Instruction-Sequence of SCM+FSA
for I being InitHalting keepInt0_1 Program of SCM+FSA
for J being InitHalting Program of SCM+FSA holds (IExec ((I ';' J),p,s)) . a = (IExec (J,p,(IExec (I,p,s)))) . a
let a be Int-Location ; for p being Instruction-Sequence of SCM+FSA
for I being InitHalting keepInt0_1 Program of SCM+FSA
for J being InitHalting Program of SCM+FSA holds (IExec ((I ';' J),p,s)) . a = (IExec (J,p,(IExec (I,p,s)))) . a
let p be Instruction-Sequence of SCM+FSA; for I being InitHalting keepInt0_1 Program of SCM+FSA
for J being InitHalting Program of SCM+FSA holds (IExec ((I ';' J),p,s)) . a = (IExec (J,p,(IExec (I,p,s)))) . a
let I be InitHalting keepInt0_1 Program of SCM+FSA; for J being InitHalting Program of SCM+FSA holds (IExec ((I ';' J),p,s)) . a = (IExec (J,p,(IExec (I,p,s)))) . a
let J be InitHalting Program of SCM+FSA; (IExec ((I ';' J),p,s)) . a = (IExec (J,p,(IExec (I,p,s)))) . a
( IExec ((I ';' J),p,s) = IncIC ((IExec (J,p,(IExec (I,p,s)))),(card I)) & not a in dom (Start-At (((IC (IExec (J,p,(IExec (I,p,s))))) + (card I)),SCM+FSA)) )
by Th29, SCMFSA_2:102;
hence
(IExec ((I ';' J),p,s)) . a = (IExec (J,p,(IExec (I,p,s)))) . a
by FUNCT_4:11; verum