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(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

Q is empty.


QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
  ↳ QTRS Reverse

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

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

Q is empty.

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

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

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

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))

The set Q is empty.

↳ QTRS
  ↳ QTRS Reverse
QTRS
  ↳ DependencyPairsProof
  ↳ QTRS Reverse

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

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(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:

L(r(a(a(x1)))) → A(l(c(c(c(r(x1))))))
A(l(x1)) → L(a(x1))
L(r(a(a(x1)))) → C(r(x1))
C(a(r(x1))) → A(x1)
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))
A(c(x1)) → A(x1)
L(r(a(a(x1)))) → L(c(c(c(r(x1)))))
L(r(a(a(x1)))) → C(c(r(x1)))
A(l(x1)) → A(x1)
A(c(x1)) → C(a(x1))
L(r(a(a(x1)))) → C(c(c(r(x1))))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

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

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

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

L(r(a(a(x1)))) → A(l(c(c(c(r(x1))))))
A(l(x1)) → L(a(x1))
L(r(a(a(x1)))) → C(r(x1))
C(a(r(x1))) → A(x1)
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))
A(c(x1)) → A(x1)
L(r(a(a(x1)))) → L(c(c(c(r(x1)))))
L(r(a(a(x1)))) → C(c(r(x1)))
A(l(x1)) → A(x1)
A(c(x1)) → C(a(x1))
L(r(a(a(x1)))) → C(c(c(r(x1))))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(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 4 less nodes.

↳ QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
QDP
          ↳ RuleRemovalProof
  ↳ QTRS Reverse

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

L(r(a(a(x1)))) → A(l(c(c(c(r(x1))))))
A(l(x1)) → L(a(x1))
C(a(r(x1))) → A(x1)
A(c(x1)) → A(x1)
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))
A(l(x1)) → A(x1)
A(c(x1)) → C(a(x1))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the rule removal processor [15] with the following polynomial ordering [25], at least one Dependency Pair or term rewrite system rule of this QDP problem can be strictly oriented.
Strictly oriented dependency pairs:

A(l(x1)) → A(x1)


Used ordering: POLO with Polynomial interpretation [25]:

POL(A(x1)) = x1   
POL(C(x1)) = x1   
POL(L(x1)) = 2 + 2·x1   
POL(a(x1)) = x1   
POL(c(x1)) = x1   
POL(l(x1)) = 2 + 2·x1   
POL(r(x1)) = x1   



↳ QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ RuleRemovalProof
QDP
              ↳ RuleRemovalProof
  ↳ QTRS Reverse

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

A(l(x1)) → L(a(x1))
L(r(a(a(x1)))) → A(l(c(c(c(r(x1))))))
C(a(r(x1))) → A(x1)
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))
A(c(x1)) → A(x1)
A(c(x1)) → C(a(x1))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the rule removal processor [15] with the following polynomial ordering [25], at least one Dependency Pair or term rewrite system rule of this QDP problem can be strictly oriented.
Strictly oriented dependency pairs:

C(a(r(x1))) → A(x1)


Used ordering: POLO with Polynomial interpretation [25]:

POL(A(x1)) = x1   
POL(C(x1)) = x1   
POL(L(x1)) = x1   
POL(a(x1)) = x1   
POL(c(x1)) = x1   
POL(l(x1)) = x1   
POL(r(x1)) = 1 + x1   



↳ QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ RuleRemovalProof
            ↳ QDP
              ↳ RuleRemovalProof
QDP
                  ↳ DependencyGraphProof
  ↳ QTRS Reverse

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

L(r(a(a(x1)))) → A(l(c(c(c(r(x1))))))
A(l(x1)) → L(a(x1))
A(c(x1)) → A(x1)
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))
A(c(x1)) → C(a(x1))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(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 1 less node.

↳ QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ RuleRemovalProof
            ↳ QDP
              ↳ RuleRemovalProof
                ↳ QDP
                  ↳ DependencyGraphProof
QDP
                      ↳ RuleRemovalProof
  ↳ QTRS Reverse

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

L(r(a(a(x1)))) → A(l(c(c(c(r(x1))))))
A(l(x1)) → L(a(x1))
A(c(x1)) → A(x1)
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the rule removal processor [15] with the following polynomial ordering [25], at least one Dependency Pair or term rewrite system rule of this QDP problem can be strictly oriented.
Strictly oriented dependency pairs:

L(r(a(a(x1)))) → A(l(c(c(c(r(x1))))))


Used ordering: POLO with Polynomial interpretation [25]:

POL(A(x1)) = 2 + 2·x1   
POL(L(x1)) = x1   
POL(a(x1)) = 2 + 2·x1   
POL(c(x1)) = x1   
POL(l(x1)) = x1   
POL(r(x1)) = x1   



↳ QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ RuleRemovalProof
            ↳ QDP
              ↳ RuleRemovalProof
                ↳ QDP
                  ↳ DependencyGraphProof
                    ↳ QDP
                      ↳ RuleRemovalProof
QDP
                          ↳ QDPOrderProof
  ↳ QTRS Reverse

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

A(l(x1)) → L(a(x1))
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))
A(c(x1)) → A(x1)

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


A(c(x1)) → A(x1)
The remaining pairs can at least be oriented weakly.

A(l(x1)) → L(a(x1))
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))
Used ordering: Polynomial Order [21,25] with Interpretation:

POL( A(x1) ) = x1


POL( r(x1) ) = max{0, x1 - 1}


POL( c(x1) ) = x1 + 1


POL( l(x1) ) = max{0, -1}


POL( a(x1) ) = x1


POL( L(x1) ) = max{0, -1}



The following usable rules [17] were oriented:

l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))
a(l(x1)) → l(a(x1))
c(a(r(x1))) → r(a(x1))
a(c(x1)) → c(a(x1))



↳ QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ RuleRemovalProof
            ↳ QDP
              ↳ RuleRemovalProof
                ↳ QDP
                  ↳ DependencyGraphProof
                    ↳ QDP
                      ↳ RuleRemovalProof
                        ↳ QDP
                          ↳ QDPOrderProof
QDP
                              ↳ Narrowing
  ↳ QTRS Reverse

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

A(l(x1)) → L(a(x1))
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

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

A(l(l(x0))) → L(l(a(x0)))
A(l(c(x0))) → L(c(a(x0)))



↳ QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ RuleRemovalProof
            ↳ QDP
              ↳ RuleRemovalProof
                ↳ QDP
                  ↳ DependencyGraphProof
                    ↳ QDP
                      ↳ RuleRemovalProof
                        ↳ QDP
                          ↳ QDPOrderProof
                            ↳ QDP
                              ↳ Narrowing
QDP
                                  ↳ Narrowing
  ↳ QTRS Reverse

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

A(l(c(x0))) → L(c(a(x0)))
L(r(a(a(x1)))) → A(a(l(c(c(c(r(x1)))))))
A(l(l(x0))) → L(l(a(x0)))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

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

L(r(a(a(y0)))) → A(l(a(c(c(c(r(y0)))))))



↳ QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ RuleRemovalProof
            ↳ QDP
              ↳ RuleRemovalProof
                ↳ QDP
                  ↳ DependencyGraphProof
                    ↳ QDP
                      ↳ RuleRemovalProof
                        ↳ QDP
                          ↳ QDPOrderProof
                            ↳ QDP
                              ↳ Narrowing
                                ↳ QDP
                                  ↳ Narrowing
QDP
                                      ↳ QDPOrderProof
  ↳ QTRS Reverse

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

A(l(c(x0))) → L(c(a(x0)))
A(l(l(x0))) → L(l(a(x0)))
L(r(a(a(y0)))) → A(l(a(c(c(c(r(y0)))))))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


A(l(l(x0))) → L(l(a(x0)))
The remaining pairs can at least be oriented weakly.

A(l(c(x0))) → L(c(a(x0)))
L(r(a(a(y0)))) → A(l(a(c(c(c(r(y0)))))))
Used ordering: Polynomial Order [21,25] with Interpretation:

POL( A(x1) ) = 1


POL( r(x1) ) = 1


POL( c(x1) ) = 1


POL( l(x1) ) = 0


POL( a(x1) ) = x1


POL( L(x1) ) = x1



The following usable rules [17] were oriented:

l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))
a(l(x1)) → l(a(x1))
c(a(r(x1))) → r(a(x1))
a(c(x1)) → c(a(x1))



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

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

A(l(c(x0))) → L(c(a(x0)))
L(r(a(a(y0)))) → A(l(a(c(c(c(r(y0)))))))

The TRS R consists of the following rules:

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(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
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ RuleRemovalProof
            ↳ QDP
              ↳ RuleRemovalProof
                ↳ QDP
                  ↳ DependencyGraphProof
                    ↳ QDP
                      ↳ RuleRemovalProof
                        ↳ QDP
                          ↳ QDPOrderProof
                            ↳ QDP
                              ↳ Narrowing
                                ↳ QDP
                                  ↳ Narrowing
                                    ↳ QDP
                                      ↳ QDPOrderProof
                                        ↳ QDP
                                          ↳ QDPToSRSProof
QTRS
                                              ↳ QTRS Reverse
  ↳ QTRS Reverse

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

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))
A(l(c(x0))) → L(c(a(x0)))
L(r(a(a(y0)))) → A(l(a(c(c(c(r(y0)))))))

Q is empty.

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

a(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))
A(l(c(x0))) → L(c(a(x0)))
L(r(a(a(y0)))) → A(l(a(c(c(c(r(y0)))))))

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

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

The set Q is empty.

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

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

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

Q is empty.

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

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

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

a(l(x)) → l(a(x))
a(c(x)) → c(a(x))
c(a(r(x))) → r(a(x))
l(r(a(a(x)))) → a(a(l(c(c(c(r(x)))))))
A(l(c(x))) → L(c(a(x)))
L(r(a(a(x)))) → A(l(a(c(c(c(r(x)))))))

The set Q is empty.

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

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

a(l(x)) → l(a(x))
a(c(x)) → c(a(x))
c(a(r(x))) → r(a(x))
l(r(a(a(x)))) → a(a(l(c(c(c(r(x)))))))
A(l(c(x))) → L(c(a(x)))
L(r(a(a(x)))) → A(l(a(c(c(c(r(x)))))))

Q is empty.

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

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

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

a(l(x)) → l(a(x))
a(c(x)) → c(a(x))
c(a(r(x))) → r(a(x))
l(r(a(a(x)))) → a(a(l(c(c(c(r(x)))))))
A(l(c(x))) → L(c(a(x)))
L(r(a(a(x)))) → A(l(a(c(c(c(r(x)))))))

The set Q is empty.

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

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

a(l(x)) → l(a(x))
a(c(x)) → c(a(x))
c(a(r(x))) → r(a(x))
l(r(a(a(x)))) → a(a(l(c(c(c(r(x)))))))
A(l(c(x))) → L(c(a(x)))
L(r(a(a(x)))) → A(l(a(c(c(c(r(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:

C(a(x)) → A1(c(x))
A1(a(r(L(x)))) → R(c(c(c(a(l(A(x)))))))
C(a(x)) → C(x)
L1(a(x)) → A1(l(x))
A1(a(r(L(x)))) → C(c(c(a(l(A(x))))))
A1(a(r(l(x)))) → C(l(a(a(x))))
A1(a(r(l(x)))) → C(c(c(l(a(a(x))))))
A1(a(r(L(x)))) → C(c(a(l(A(x)))))
L1(a(x)) → L1(x)
A1(a(r(L(x)))) → L1(A(x))
A1(a(r(L(x)))) → C(a(l(A(x))))
C(l(A(x))) → A1(c(L(x)))
A1(a(r(l(x)))) → A1(x)
R(a(c(x))) → R(x)
A1(a(r(l(x)))) → R(c(c(c(l(a(a(x)))))))
A1(a(r(l(x)))) → A1(a(x))
R(a(c(x))) → A1(r(x))
A1(a(r(L(x)))) → A1(l(A(x)))
A1(a(r(l(x)))) → L1(a(a(x)))
C(l(A(x))) → C(L(x))
A1(a(r(l(x)))) → C(c(l(a(a(x)))))

The TRS R consists of the following rules:

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

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

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

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

C(a(x)) → A1(c(x))
A1(a(r(L(x)))) → R(c(c(c(a(l(A(x)))))))
C(a(x)) → C(x)
L1(a(x)) → A1(l(x))
A1(a(r(L(x)))) → C(c(c(a(l(A(x))))))
A1(a(r(l(x)))) → C(l(a(a(x))))
A1(a(r(l(x)))) → C(c(c(l(a(a(x))))))
A1(a(r(L(x)))) → C(c(a(l(A(x)))))
L1(a(x)) → L1(x)
A1(a(r(L(x)))) → L1(A(x))
A1(a(r(L(x)))) → C(a(l(A(x))))
C(l(A(x))) → A1(c(L(x)))
A1(a(r(l(x)))) → A1(x)
R(a(c(x))) → R(x)
A1(a(r(l(x)))) → R(c(c(c(l(a(a(x)))))))
A1(a(r(l(x)))) → A1(a(x))
R(a(c(x))) → A1(r(x))
A1(a(r(L(x)))) → A1(l(A(x)))
A1(a(r(l(x)))) → L1(a(a(x)))
C(l(A(x))) → C(L(x))
A1(a(r(l(x)))) → C(c(l(a(a(x)))))

The TRS R consists of the following rules:

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(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
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ RuleRemovalProof
            ↳ QDP
              ↳ RuleRemovalProof
                ↳ QDP
                  ↳ DependencyGraphProof
                    ↳ QDP
                      ↳ RuleRemovalProof
                        ↳ QDP
                          ↳ QDPOrderProof
                            ↳ QDP
                              ↳ Narrowing
                                ↳ QDP
                                  ↳ Narrowing
                                    ↳ QDP
                                      ↳ QDPOrderProof
                                        ↳ QDP
                                          ↳ QDPToSRSProof
                                            ↳ QTRS
                                              ↳ QTRS Reverse
                                                ↳ QTRS
                                                  ↳ QTRS Reverse
                                                  ↳ QTRS Reverse
                                                  ↳ DependencyPairsProof
                                                    ↳ QDP
                                                      ↳ DependencyGraphProof
QDP
                                                          ↳ RuleRemovalProof
  ↳ QTRS Reverse

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

C(a(x)) → A1(c(x))
A1(a(r(L(x)))) → R(c(c(c(a(l(A(x)))))))
C(a(x)) → C(x)
L1(a(x)) → A1(l(x))
A1(a(r(L(x)))) → C(c(c(a(l(A(x))))))
A1(a(r(l(x)))) → C(l(a(a(x))))
A1(a(r(l(x)))) → C(c(c(l(a(a(x))))))
A1(a(r(L(x)))) → C(c(a(l(A(x)))))
L1(a(x)) → L1(x)
A1(a(r(L(x)))) → C(a(l(A(x))))
A1(a(r(l(x)))) → A1(x)
R(a(c(x))) → R(x)
A1(a(r(l(x)))) → R(c(c(c(l(a(a(x)))))))
A1(a(r(l(x)))) → A1(a(x))
R(a(c(x))) → A1(r(x))
A1(a(r(l(x)))) → L1(a(a(x)))
A1(a(r(l(x)))) → C(c(l(a(a(x)))))

The TRS R consists of the following rules:

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the rule removal processor [15] with the following polynomial ordering [25], at least one Dependency Pair or term rewrite system rule of this QDP problem can be strictly oriented.
Strictly oriented dependency pairs:

A1(a(r(L(x)))) → C(c(c(a(l(A(x))))))
A1(a(r(L(x)))) → C(c(a(l(A(x)))))
A1(a(r(L(x)))) → C(a(l(A(x))))


Used ordering: POLO with Polynomial interpretation [25]:

POL(A(x1)) = 1 + x1   
POL(A1(x1)) = x1   
POL(C(x1)) = x1   
POL(L(x1)) = 2 + 2·x1   
POL(L1(x1)) = 2·x1   
POL(R(x1)) = 2·x1   
POL(a(x1)) = x1   
POL(c(x1)) = x1   
POL(l(x1)) = 2·x1   
POL(r(x1)) = 2·x1   



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

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

C(a(x)) → A1(c(x))
A1(a(r(L(x)))) → R(c(c(c(a(l(A(x)))))))
C(a(x)) → C(x)
L1(a(x)) → A1(l(x))
A1(a(r(l(x)))) → C(l(a(a(x))))
A1(a(r(l(x)))) → C(c(c(l(a(a(x))))))
L1(a(x)) → L1(x)
A1(a(r(l(x)))) → A1(x)
R(a(c(x))) → R(x)
A1(a(r(l(x)))) → R(c(c(c(l(a(a(x)))))))
A1(a(r(l(x)))) → A1(a(x))
R(a(c(x))) → A1(r(x))
A1(a(r(l(x)))) → L1(a(a(x)))
A1(a(r(l(x)))) → C(c(l(a(a(x)))))

The TRS R consists of the following rules:

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the rule removal processor [15] with the following polynomial ordering [25], at least one Dependency Pair or term rewrite system rule of this QDP problem can be strictly oriented.
Strictly oriented dependency pairs:

C(a(x)) → C(x)
L1(a(x)) → L1(x)
A1(a(r(l(x)))) → A1(x)
R(a(c(x))) → R(x)


Used ordering: POLO with Polynomial interpretation [25]:

POL(A(x1)) = 1 + 2·x1   
POL(A1(x1)) = 1 + 2·x1   
POL(C(x1)) = x1   
POL(L(x1)) = x1   
POL(L1(x1)) = x1   
POL(R(x1)) = x1   
POL(a(x1)) = 1 + 2·x1   
POL(c(x1)) = x1   
POL(l(x1)) = x1   
POL(r(x1)) = x1   



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

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

C(a(x)) → A1(c(x))
A1(a(r(L(x)))) → R(c(c(c(a(l(A(x)))))))
A1(a(r(l(x)))) → A1(a(x))
A1(a(r(l(x)))) → R(c(c(c(l(a(a(x)))))))
L1(a(x)) → A1(l(x))
A1(a(r(l(x)))) → C(l(a(a(x))))
R(a(c(x))) → A1(r(x))
A1(a(r(l(x)))) → C(c(c(l(a(a(x))))))
A1(a(r(l(x)))) → L1(a(a(x)))
A1(a(r(l(x)))) → C(c(l(a(a(x)))))

The TRS R consists of the following rules:

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the rule removal processor [15] with the following polynomial ordering [25], at least one Dependency Pair or term rewrite system rule of this QDP problem can be strictly oriented.
Strictly oriented dependency pairs:

C(a(x)) → A1(c(x))
A1(a(r(l(x)))) → A1(a(x))
L1(a(x)) → A1(l(x))
A1(a(r(l(x)))) → C(l(a(a(x))))
A1(a(r(l(x)))) → C(c(c(l(a(a(x))))))
A1(a(r(l(x)))) → L1(a(a(x)))
A1(a(r(l(x)))) → C(c(l(a(a(x)))))


Used ordering: POLO with Polynomial interpretation [25]:

POL(A(x1)) = 1 + 2·x1   
POL(A1(x1)) = 2·x1   
POL(C(x1)) = x1   
POL(L(x1)) = x1   
POL(L1(x1)) = 2 + x1   
POL(R(x1)) = 2·x1   
POL(a(x1)) = 1 + 2·x1   
POL(c(x1)) = x1   
POL(l(x1)) = x1   
POL(r(x1)) = 1 + 2·x1   



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

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

A1(a(r(L(x)))) → R(c(c(c(a(l(A(x)))))))
A1(a(r(l(x)))) → R(c(c(c(l(a(a(x)))))))
R(a(c(x))) → A1(r(x))

The TRS R consists of the following rules:

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule A1(a(r(L(x)))) → R(c(c(c(a(l(A(x))))))) at position [0] we obtained the following new rules:

A1(a(r(L(y0)))) → R(c(c(a(c(l(A(y0)))))))



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

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

A1(a(r(L(y0)))) → R(c(c(a(c(l(A(y0)))))))
A1(a(r(l(x)))) → R(c(c(c(l(a(a(x)))))))
R(a(c(x))) → A1(r(x))

The TRS R consists of the following rules:

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule A1(a(r(l(x)))) → R(c(c(c(l(a(a(x))))))) at position [0] we obtained the following new rules:

A1(a(r(l(a(r(l(x0))))))) → R(c(c(c(l(a(r(c(c(c(l(a(a(x0)))))))))))))
A1(a(r(l(a(r(L(x0))))))) → R(c(c(c(l(a(r(c(c(c(a(l(A(x0)))))))))))))
A1(a(r(l(r(l(x0)))))) → R(c(c(c(l(r(c(c(c(l(a(a(x0))))))))))))
A1(a(r(l(r(L(x0)))))) → R(c(c(c(l(r(c(c(c(a(l(A(x0))))))))))))
A1(a(r(l(y0)))) → R(c(c(c(a(l(a(y0)))))))



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

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

A1(a(r(l(r(l(x0)))))) → R(c(c(c(l(r(c(c(c(l(a(a(x0))))))))))))
A1(a(r(L(y0)))) → R(c(c(a(c(l(A(y0)))))))
A1(a(r(l(a(r(l(x0))))))) → R(c(c(c(l(a(r(c(c(c(l(a(a(x0)))))))))))))
A1(a(r(l(a(r(L(x0))))))) → R(c(c(c(l(a(r(c(c(c(a(l(A(x0)))))))))))))
A1(a(r(l(r(L(x0)))))) → R(c(c(c(l(r(c(c(c(a(l(A(x0))))))))))))
R(a(c(x))) → A1(r(x))
A1(a(r(l(y0)))) → R(c(c(c(a(l(a(y0)))))))

The TRS R consists of the following rules:

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(A(x)))))))

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule R(a(c(x))) → A1(r(x)) at position [0] we obtained the following new rules:

R(a(c(a(c(x0))))) → A1(a(r(x0)))



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

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

A1(a(r(l(r(l(x0)))))) → R(c(c(c(l(r(c(c(c(l(a(a(x0))))))))))))
A1(a(r(L(y0)))) → R(c(c(a(c(l(A(y0)))))))
R(a(c(a(c(x0))))) → A1(a(r(x0)))
A1(a(r(l(a(r(l(x0))))))) → R(c(c(c(l(a(r(c(c(c(l(a(a(x0)))))))))))))
A1(a(r(l(a(r(L(x0))))))) → R(c(c(c(l(a(r(c(c(c(a(l(A(x0)))))))))))))
A1(a(r(l(r(L(x0)))))) → R(c(c(c(l(r(c(c(c(a(l(A(x0))))))))))))
A1(a(r(l(y0)))) → R(c(c(c(a(l(a(y0)))))))

The TRS R consists of the following rules:

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))
c(l(A(x))) → a(c(L(x)))
a(a(r(L(x)))) → r(c(c(c(a(l(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(l(x1)) → l(a(x1))
a(c(x1)) → c(a(x1))
c(a(r(x1))) → r(a(x1))
l(r(a(a(x1)))) → a(a(l(c(c(c(r(x1)))))))

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

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))

The set Q is empty.

↳ QTRS
  ↳ QTRS Reverse
  ↳ DependencyPairsProof
  ↳ QTRS Reverse
QTRS

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

l(a(x)) → a(l(x))
c(a(x)) → a(c(x))
r(a(c(x))) → a(r(x))
a(a(r(l(x)))) → r(c(c(c(l(a(a(x)))))))

Q is empty.