let a be Int-Location ; :: thesis: for l being Instruction-Location of SCM+FSA holds not a in dom (Start-At l)
let l be Instruction-Location of SCM+FSA ; :: thesis: not a in dom (Start-At l)
A1: dom (Start-At l) = {(IC SCM+FSA )} by FUNCOP_1:19;
assume a in dom (Start-At l) ; :: thesis: contradiction
then a = IC SCM+FSA by A1, TARSKI:def 1;
hence contradiction by SCMFSA_2:81; :: thesis: verum