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:

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

Q is empty.


QTRS
  ↳ DependencyPairsProof

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(x1))) → a(l(c(c(r(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:

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

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

↳ QTRS
  ↳ DependencyPairsProof
QDP
      ↳ DependencyGraphProof

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

L(r(a(x1))) → C(c(r(x1)))
A(l(x1)) → L(a(x1))
C(a(r(x1))) → A(x1)
A(c(x1)) → A(x1)
A(l(x1)) → A(x1)
L(r(a(x1))) → C(r(x1))
L(r(a(x1))) → A(l(c(c(r(x1)))))
A(c(x1)) → C(a(x1))
L(r(a(x1))) → L(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(x1))) → a(l(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 3 less nodes.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
QDP
          ↳ QDPOrderProof

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

A(l(x1)) → L(a(x1))
C(a(r(x1))) → A(x1)
A(c(x1)) → A(x1)
A(l(x1)) → A(x1)
L(r(a(x1))) → A(l(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(x1))) → a(l(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(x1)) → A(x1)
The remaining pairs can at least be oriented weakly.

A(l(x1)) → L(a(x1))
C(a(r(x1))) → A(x1)
A(c(x1)) → A(x1)
L(r(a(x1))) → A(l(c(c(r(x1)))))
A(c(x1)) → C(a(x1))
Used ordering: Polynomial interpretation [25,35]:

POL(C(x1)) = 3/4 + (1/4)x_1   
POL(c(x1)) = x_1   
POL(l(x1)) = 1/2 + (2)x_1   
POL(a(x1)) = x_1   
POL(L(x1)) = 1 + x_1   
POL(A(x1)) = 3/4 + (1/2)x_1   
POL(r(x1)) = (4)x_1   
The value of delta used in the strict ordering is 1/4.
The following usable rules [17] were oriented:

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



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
QDP
              ↳ DependencyGraphProof

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

A(l(x1)) → L(a(x1))
C(a(r(x1))) → A(x1)
A(c(x1)) → A(x1)
L(r(a(x1))) → A(l(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(x1))) → a(l(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 2 SCCs.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
QDP
                    ↳ QDPOrderProof
                  ↳ QDP

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

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


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

A(l(x1)) → L(a(x1))
Used ordering: Polynomial interpretation [25,35]:

POL(c(x1)) = (1/4)x_1   
POL(l(x1)) = (1/2)x_1   
POL(a(x1)) = (4)x_1   
POL(L(x1)) = (1/4)x_1   
POL(A(x1)) = (4)x_1   
POL(r(x1)) = 1/4   
The value of delta used in the strict ordering is 1/32.
The following usable rules [17] were oriented:

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



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
QDP
                        ↳ DependencyGraphProof
                  ↳ QDP

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

A(l(x1)) → L(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(x1))) → a(l(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 0 SCCs with 1 less node.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
QDP
                    ↳ QDPOrderProof

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

C(a(r(x1))) → A(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(x1))) → a(l(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.


C(a(r(x1))) → A(x1)
A(c(x1)) → A(x1)
A(c(x1)) → C(a(x1))
The remaining pairs can at least be oriented weakly.
none
Used ordering: Polynomial interpretation [25,35]:

POL(C(x1)) = 1 + (2)x_1   
POL(c(x1)) = 4 + (4)x_1   
POL(l(x1)) = 0   
POL(a(x1)) = x_1   
POL(A(x1)) = 1/2 + (3)x_1   
POL(r(x1)) = (4)x_1   
The value of delta used in the strict ordering is 1/2.
The following usable rules [17] were oriented:

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



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                  ↳ QDP
                    ↳ QDPOrderProof
QDP
                        ↳ PisEmptyProof

Q DP problem:
P is empty.
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(x1))) → a(l(c(c(r(x1)))))

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