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(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1

Q is empty.


QTRS
  ↳ DependencyPairsProof
  ↳ QTRS Reverse

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

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(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:

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

The TRS R consists of the following rules:

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1

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

↳ QTRS
  ↳ DependencyPairsProof
QDP
      ↳ DependencyGraphProof
  ↳ QTRS Reverse

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

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

The TRS R consists of the following rules:

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 3 less nodes.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
QDP
          ↳ Narrowing
  ↳ QTRS Reverse

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

A(b(x1)) → A(c(a(x1)))
A(b(x1)) → A(x1)

The TRS R consists of the following rules:

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule A(b(x1)) → A(c(a(x1))) at position [0] we obtained the following new rules:

A(b(b(x0))) → A(c(b(a(c(a(x0))))))
A(b(x0)) → A(c(b(x0)))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ Narrowing
QDP
              ↳ Narrowing
  ↳ QTRS Reverse

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

A(b(x0)) → A(c(b(x0)))
A(b(b(x0))) → A(c(b(a(c(a(x0))))))
A(b(x1)) → A(x1)

The TRS R consists of the following rules:

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule A(b(x0)) → A(c(b(x0))) at position [0] we obtained the following new rules:

A(b(b(x0))) → A(c(x0))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ Narrowing
            ↳ QDP
              ↳ Narrowing
QDP
                  ↳ Narrowing
  ↳ QTRS Reverse

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

A(b(b(x0))) → A(c(b(a(c(a(x0))))))
A(b(b(x0))) → A(c(x0))
A(b(x1)) → A(x1)

The TRS R consists of the following rules:

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule A(b(b(x0))) → A(c(x0)) at position [0] we obtained the following new rules:

A(b(b(c(x0)))) → A(x0)



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ Narrowing
            ↳ QDP
              ↳ Narrowing
                ↳ QDP
                  ↳ Narrowing
QDP
                      ↳ QDPToSRSProof
  ↳ QTRS Reverse

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

A(b(b(x0))) → A(c(b(a(c(a(x0))))))
A(b(b(c(x0)))) → A(x0)
A(b(x1)) → A(x1)

The TRS R consists of the following rules:

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The finiteness of this DP problem is implied by strong termination of a SRS due to [12].


↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ Narrowing
            ↳ QDP
              ↳ Narrowing
                ↳ QDP
                  ↳ Narrowing
                    ↳ QDP
                      ↳ QDPToSRSProof
QTRS
                          ↳ QTRS Reverse
  ↳ QTRS Reverse

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

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1
A(b(b(x0))) → A(c(b(a(c(a(x0))))))
A(b(b(c(x0)))) → A(x0)
A(b(x1)) → A(x1)

Q is empty.

We have reversed the following QTRS:
The set of rules R is

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1
A(b(b(x0))) → A(c(b(a(c(a(x0))))))
A(b(b(c(x0)))) → A(x0)
A(b(x1)) → A(x1)

The set Q is empty.
We have obtained the following QTRS:

a(x) → b(x)
b(a(x)) → a(c(a(b(x))))
b(b(x)) → x
c(c(x)) → x
b(b(A(x))) → a(c(a(b(c(A(x))))))
c(b(b(A(x)))) → A(x)
b(A(x)) → A(x)

The set Q is empty.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ Narrowing
            ↳ QDP
              ↳ Narrowing
                ↳ QDP
                  ↳ Narrowing
                    ↳ QDP
                      ↳ QDPToSRSProof
                        ↳ QTRS
                          ↳ QTRS Reverse
QTRS
                              ↳ DependencyPairsProof
                              ↳ QTRS Reverse
                              ↳ QTRS Reverse
  ↳ QTRS Reverse

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

a(x) → b(x)
b(a(x)) → a(c(a(b(x))))
b(b(x)) → x
c(c(x)) → x
b(b(A(x))) → a(c(a(b(c(A(x))))))
c(b(b(A(x)))) → A(x)
b(A(x)) → A(x)

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:

B(b(A(x))) → A1(b(c(A(x))))
B(b(A(x))) → C(A(x))
A1(x) → B(x)
B(b(A(x))) → B(c(A(x)))
B(b(A(x))) → A1(c(a(b(c(A(x))))))
B(a(x)) → C(a(b(x)))
B(a(x)) → A1(b(x))
B(b(A(x))) → C(a(b(c(A(x)))))
B(a(x)) → B(x)
B(a(x)) → A1(c(a(b(x))))

The TRS R consists of the following rules:

a(x) → b(x)
b(a(x)) → a(c(a(b(x))))
b(b(x)) → x
c(c(x)) → x
b(b(A(x))) → a(c(a(b(c(A(x))))))
c(b(b(A(x)))) → A(x)
b(A(x)) → A(x)

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

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ Narrowing
            ↳ QDP
              ↳ Narrowing
                ↳ QDP
                  ↳ Narrowing
                    ↳ QDP
                      ↳ QDPToSRSProof
                        ↳ QTRS
                          ↳ QTRS Reverse
                            ↳ QTRS
                              ↳ DependencyPairsProof
QDP
                                  ↳ DependencyGraphProof
                              ↳ QTRS Reverse
                              ↳ QTRS Reverse
  ↳ QTRS Reverse

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

B(b(A(x))) → A1(b(c(A(x))))
B(b(A(x))) → C(A(x))
A1(x) → B(x)
B(b(A(x))) → B(c(A(x)))
B(b(A(x))) → A1(c(a(b(c(A(x))))))
B(a(x)) → C(a(b(x)))
B(a(x)) → A1(b(x))
B(b(A(x))) → C(a(b(c(A(x)))))
B(a(x)) → B(x)
B(a(x)) → A1(c(a(b(x))))

The TRS R consists of the following rules:

a(x) → b(x)
b(a(x)) → a(c(a(b(x))))
b(b(x)) → x
c(c(x)) → x
b(b(A(x))) → a(c(a(b(c(A(x))))))
c(b(b(A(x)))) → A(x)
b(A(x)) → A(x)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 4 less nodes.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ Narrowing
            ↳ QDP
              ↳ Narrowing
                ↳ QDP
                  ↳ Narrowing
                    ↳ QDP
                      ↳ QDPToSRSProof
                        ↳ QTRS
                          ↳ QTRS Reverse
                            ↳ QTRS
                              ↳ DependencyPairsProof
                                ↳ QDP
                                  ↳ DependencyGraphProof
QDP
                              ↳ QTRS Reverse
                              ↳ QTRS Reverse
  ↳ QTRS Reverse

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

B(b(A(x))) → A1(b(c(A(x))))
A1(x) → B(x)
B(b(A(x))) → A1(c(a(b(c(A(x))))))
B(a(x)) → A1(b(x))
B(a(x)) → B(x)
B(a(x)) → A1(c(a(b(x))))

The TRS R consists of the following rules:

a(x) → b(x)
b(a(x)) → a(c(a(b(x))))
b(b(x)) → x
c(c(x)) → x
b(b(A(x))) → a(c(a(b(c(A(x))))))
c(b(b(A(x)))) → A(x)
b(A(x)) → A(x)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We have reversed the following QTRS:
The set of rules R is

a(x) → b(x)
b(a(x)) → a(c(a(b(x))))
b(b(x)) → x
c(c(x)) → x
b(b(A(x))) → a(c(a(b(c(A(x))))))
c(b(b(A(x)))) → A(x)
b(A(x)) → A(x)

The set Q is empty.
We have obtained the following QTRS:

a(x) → b(x)
a(b(x)) → b(a(c(a(x))))
b(b(x)) → x
c(c(x)) → x
A(b(b(x))) → A(c(b(a(c(a(x))))))
A(b(b(c(x)))) → A(x)
A(b(x)) → A(x)

The set Q is empty.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ Narrowing
            ↳ QDP
              ↳ Narrowing
                ↳ QDP
                  ↳ Narrowing
                    ↳ QDP
                      ↳ QDPToSRSProof
                        ↳ QTRS
                          ↳ QTRS Reverse
                            ↳ QTRS
                              ↳ DependencyPairsProof
                              ↳ QTRS Reverse
QTRS
                              ↳ QTRS Reverse
  ↳ QTRS Reverse

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

a(x) → b(x)
a(b(x)) → b(a(c(a(x))))
b(b(x)) → x
c(c(x)) → x
A(b(b(x))) → A(c(b(a(c(a(x))))))
A(b(b(c(x)))) → A(x)
A(b(x)) → A(x)

Q is empty.

We have reversed the following QTRS:
The set of rules R is

a(x) → b(x)
b(a(x)) → a(c(a(b(x))))
b(b(x)) → x
c(c(x)) → x
b(b(A(x))) → a(c(a(b(c(A(x))))))
c(b(b(A(x)))) → A(x)
b(A(x)) → A(x)

The set Q is empty.
We have obtained the following QTRS:

a(x) → b(x)
a(b(x)) → b(a(c(a(x))))
b(b(x)) → x
c(c(x)) → x
A(b(b(x))) → A(c(b(a(c(a(x))))))
A(b(b(c(x)))) → A(x)
A(b(x)) → A(x)

The set Q is empty.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ Narrowing
            ↳ QDP
              ↳ Narrowing
                ↳ QDP
                  ↳ Narrowing
                    ↳ QDP
                      ↳ QDPToSRSProof
                        ↳ QTRS
                          ↳ QTRS Reverse
                            ↳ QTRS
                              ↳ DependencyPairsProof
                              ↳ QTRS Reverse
                              ↳ QTRS Reverse
QTRS
  ↳ QTRS Reverse

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

a(x) → b(x)
a(b(x)) → b(a(c(a(x))))
b(b(x)) → x
c(c(x)) → x
A(b(b(x))) → A(c(b(a(c(a(x))))))
A(b(b(c(x)))) → A(x)
A(b(x)) → A(x)

Q is empty.

We have reversed the following QTRS:
The set of rules R is

a(x1) → b(x1)
a(b(x1)) → b(a(c(a(x1))))
b(b(x1)) → x1
c(c(x1)) → x1

The set Q is empty.
We have obtained the following QTRS:

a(x) → b(x)
b(a(x)) → a(c(a(b(x))))
b(b(x)) → x
c(c(x)) → x

The set Q is empty.

↳ QTRS
  ↳ DependencyPairsProof
  ↳ QTRS Reverse
QTRS

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

a(x) → b(x)
b(a(x)) → a(c(a(b(x))))
b(b(x)) → x
c(c(x)) → x

Q is empty.