Termination w.r.t. Q proof of TRS/Waldmannjwcime2.trs

Termination w.r.t. Q of the following Term Rewriting System could not be shown:

Q restricted rewrite system:
The TRS R consists of the following rules:

f₂(x, f₂(y, a)) -> f₂(f₂(f₂(f₂(a, a), y), h₁(a)), x)

Q is empty.

↳ QTRS

  ↳ DependencyPairsProof

Q restricted rewrite system:
The TRS R consists of the following rules:

f₂(x, f₂(y, a)) -> f₂(f₂(f₂(f₂(a, a), y), h₁(a)), x)

Q is empty.

Using Dependency Pairs [1,13] we result in the following initial DP problem:
Q DP problem:
The TRS P consists of the following rules:

F₂(x, f₂(y, a)) -> F₂(f₂(f₂(f₂(a, a), y), h₁(a)), x)
F₂(x, f₂(y, a)) -> F₂(a, a)
F₂(x, f₂(y, a)) -> F₂(f₂(a, a), y)
F₂(x, f₂(y, a)) -> F₂(f₂(f₂(a, a), y), h₁(a))

The TRS R consists of the following rules:

f₂(x, f₂(y, a)) -> f₂(f₂(f₂(f₂(a, a), y), h₁(a)), x)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

Q DP problem:
The TRS P consists of the following rules:

F₂(x, f₂(y, a)) -> F₂(f₂(f₂(f₂(a, a), y), h₁(a)), x)
F₂(x, f₂(y, a)) -> F₂(a, a)
F₂(x, f₂(y, a)) -> F₂(f₂(a, a), y)
F₂(x, f₂(y, a)) -> F₂(f₂(f₂(a, a), y), h₁(a))

The TRS R consists of the following rules:

f₂(x, f₂(y, a)) -> f₂(f₂(f₂(f₂(a, a), y), h₁(a)), x)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [13,14,18] contains 1 SCC with 2 less nodes.

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

F₂(x, f₂(y, a)) -> F₂(f₂(f₂(f₂(a, a), y), h₁(a)), x)
F₂(x, f₂(y, a)) -> F₂(f₂(a, a), y)

The TRS R consists of the following rules:

f₂(x, f₂(y, a)) -> f₂(f₂(f₂(f₂(a, a), y), h₁(a)), x)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.