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:

A(b(x1)) → b(a(B(A(x1))))
B(a(x1)) → a(b(A(B(x1))))
A(a(x1)) → x1
B(b(x1)) → x1

Q is empty.


QTRS
  ↳ DependencyPairsProof

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

A(b(x1)) → b(a(B(A(x1))))
B(a(x1)) → a(b(A(B(x1))))
A(a(x1)) → x1
B(b(x1)) → x1

Q is empty.

Using Dependency Pairs [1,15] we result in the following initial DP problem:
Q DP problem:
The TRS P consists of the following rules:

B1(a(x1)) → B1(x1)
B1(a(x1)) → A1(B(x1))
A1(b(x1)) → B1(A(x1))
A1(b(x1)) → A1(x1)

The TRS R consists of the following rules:

A(b(x1)) → b(a(B(A(x1))))
B(a(x1)) → a(b(A(B(x1))))
A(a(x1)) → x1
B(b(x1)) → x1

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:

B1(a(x1)) → B1(x1)
B1(a(x1)) → A1(B(x1))
A1(b(x1)) → B1(A(x1))
A1(b(x1)) → A1(x1)

The TRS R consists of the following rules:

A(b(x1)) → b(a(B(A(x1))))
B(a(x1)) → a(b(A(B(x1))))
A(a(x1)) → x1
B(b(x1)) → x1

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