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:

f1(a) -> f1(a)
a -> b

Q is empty.


QTRS
  ↳ DependencyPairsProof

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

f1(a) -> f1(a)
a -> b

Q is empty.

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

F1(a) -> F1(a)

The TRS R consists of the following rules:

f1(a) -> f1(a)
a -> b

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

↳ QTRS
  ↳ DependencyPairsProof
QDP

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

F1(a) -> F1(a)

The TRS R consists of the following rules:

f1(a) -> f1(a)
a -> b

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