Termination w.r.t. Q of the following Term Rewriting System could be proven:

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

app2(app2(app2(compose, f), g), x) -> app2(f, app2(g, x))

Q is empty.


↳ QTRS
  ↳ Non-Overlap Check

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

app2(app2(app2(compose, f), g), x) -> app2(f, app2(g, x))

Q is empty.

The TRS is non-overlapping. Hence, we can switch to innermost.

↳ QTRS
  ↳ Non-Overlap Check
    ↳ QTRS
      ↳ DependencyPairsProof

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

app2(app2(app2(compose, f), g), x) -> app2(f, app2(g, x))

The set Q consists of the following terms:

app2(app2(app2(compose, x0), x1), x2)


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

APP2(app2(app2(compose, f), g), x) -> APP2(f, app2(g, x))
APP2(app2(app2(compose, f), g), x) -> APP2(g, x)

The TRS R consists of the following rules:

app2(app2(app2(compose, f), g), x) -> app2(f, app2(g, x))

The set Q consists of the following terms:

app2(app2(app2(compose, x0), x1), x2)

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

↳ QTRS
  ↳ Non-Overlap Check
    ↳ QTRS
      ↳ DependencyPairsProof
        ↳ QDP
          ↳ QDPOrderProof

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

APP2(app2(app2(compose, f), g), x) -> APP2(f, app2(g, x))
APP2(app2(app2(compose, f), g), x) -> APP2(g, x)

The TRS R consists of the following rules:

app2(app2(app2(compose, f), g), x) -> app2(f, app2(g, x))

The set Q consists of the following terms:

app2(app2(app2(compose, x0), x1), x2)

We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [13].


The following pairs can be strictly oriented and are deleted.


APP2(app2(app2(compose, f), g), x) -> APP2(f, app2(g, x))
APP2(app2(app2(compose, f), g), x) -> APP2(g, x)
The remaining pairs can at least by weakly be oriented.
none
Used ordering: Combined order from the following AFS and order.
APP2(x1, x2)  =  APP2(x1, x2)
app2(x1, x2)  =  app2(x1, x2)
compose  =  compose

Lexicographic Path Order [19].
Precedence:
APP2 > app2
compose > app2


The following usable rules [14] were oriented:

app2(app2(app2(compose, f), g), x) -> app2(f, app2(g, x))



↳ QTRS
  ↳ Non-Overlap Check
    ↳ QTRS
      ↳ DependencyPairsProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ PisEmptyProof

Q DP problem:
P is empty.
The TRS R consists of the following rules:

app2(app2(app2(compose, f), g), x) -> app2(f, app2(g, x))

The set Q consists of the following terms:

app2(app2(app2(compose, x0), x1), x2)

We have to consider all minimal (P,Q,R)-chains.
The TRS P is empty. Hence, there is no (P,Q,R) chain.