MAYBE

Proof:
ConCon could not decide if this system is quasi-decreasing.
\cite{O02}, p. 214, Proposition 7.2.50 does not apply.
System R transformed to U(R).
Call external tool:
ttt2 - trs 30
Input:
  ?1(h(y), x) -> y
  f(x) -> ?1(a, x)
  ?3(c, x) -> g(f(c), x)
  ?2(x, x) -> ?3(x, x)
  g(x, b) -> ?2(f(b), x)
  a -> h(b)
  a -> h(c)

The external tool could not decide termination.