reserve a, b, d1, d2, d3, d4 for Int-Location,
  A, B for Data-Location,
  f, f1, f2, f3 for FinSeq-Location,
  il, i1, i2 for Nat,
  L for Nat,
  I for Instruction of SCM+FSA,
  s,s1,s2 for State of SCM+FSA,
  T for InsType of the InstructionsF of SCM+FSA,
  k for Nat;

theorem Th2:
  a := b = [1,{},<*a,b*>]
proof
  ex A,B st a = A & b = B & a := b = A:=B by SCMFSA_2:def 8;
  hence thesis;
end;
