Termination w.r.t. Q proof of TRS/TRCSREx3_3_25_Bor03

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__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.

↳ QTRS

  ↳ DependencyPairsProof

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

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.

Using Dependency Pairs [1,13] we result in the following initial DP problem:
Q DP problem:
The TRS P consists of the following rules:

A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> MARK₁(X)
MARK₁(app₂(X1, X2)) -> A__APP₂(mark₁(X1), mark₁(X2))
MARK₁(prefix₁(X)) -> MARK₁(X)
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X1)
A__APP₂(nil, YS) -> MARK₁(YS)
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X2)
A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> MARK₁(Y)
A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> A__APP₂(mark₁(Y), cons₂(mark₁(X), nil))
MARK₁(app₂(X1, X2)) -> MARK₁(X1)
MARK₁(s₁(X)) -> MARK₁(X)
MARK₁(prefix₁(X)) -> A__PREFIX₁(mark₁(X))
MARK₁(zWadr₂(X1, X2)) -> A__ZWADR₂(mark₁(X1), mark₁(X2))
MARK₁(from₁(X)) -> MARK₁(X)
A__APP₂(cons₂(X, XS), YS) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)
MARK₁(app₂(X1, X2)) -> MARK₁(X2)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

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:

A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> MARK₁(X)
MARK₁(app₂(X1, X2)) -> A__APP₂(mark₁(X1), mark₁(X2))
MARK₁(prefix₁(X)) -> MARK₁(X)
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X1)
A__APP₂(nil, YS) -> MARK₁(YS)
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X2)
A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> MARK₁(Y)
A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> A__APP₂(mark₁(Y), cons₂(mark₁(X), nil))
MARK₁(app₂(X1, X2)) -> MARK₁(X1)
MARK₁(s₁(X)) -> MARK₁(X)
MARK₁(prefix₁(X)) -> A__PREFIX₁(mark₁(X))
MARK₁(zWadr₂(X1, X2)) -> A__ZWADR₂(mark₁(X1), mark₁(X2))
MARK₁(from₁(X)) -> MARK₁(X)
A__APP₂(cons₂(X, XS), YS) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)
MARK₁(app₂(X1, X2)) -> MARK₁(X2)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [13,14,18] contains 1 SCC with 1 less node.

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

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

A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> MARK₁(X)
MARK₁(app₂(X1, X2)) -> A__APP₂(mark₁(X1), mark₁(X2))
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X1)
MARK₁(prefix₁(X)) -> MARK₁(X)
A__APP₂(nil, YS) -> MARK₁(YS)
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X2)
A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> MARK₁(Y)
A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> A__APP₂(mark₁(Y), cons₂(mark₁(X), nil))
MARK₁(app₂(X1, X2)) -> MARK₁(X1)
MARK₁(s₁(X)) -> MARK₁(X)
MARK₁(zWadr₂(X1, X2)) -> A__ZWADR₂(mark₁(X1), mark₁(X2))
MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
A__APP₂(cons₂(X, XS), YS) -> MARK₁(X)
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)
MARK₁(app₂(X1, X2)) -> MARK₁(X2)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [13].

The following pairs can be oriented strictly and are deleted.

A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> MARK₁(X)
A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> MARK₁(Y)
A__ZWADR₂(cons₂(X, XS), cons₂(Y, YS)) -> A__APP₂(mark₁(Y), cons₂(mark₁(X), nil))

The remaining pairs can at least be oriented weakly.

MARK₁(app₂(X1, X2)) -> A__APP₂(mark₁(X1), mark₁(X2))
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X1)
MARK₁(prefix₁(X)) -> MARK₁(X)
A__APP₂(nil, YS) -> MARK₁(YS)
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X2)
MARK₁(app₂(X1, X2)) -> MARK₁(X1)
MARK₁(s₁(X)) -> MARK₁(X)
MARK₁(zWadr₂(X1, X2)) -> A__ZWADR₂(mark₁(X1), mark₁(X2))
MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
A__APP₂(cons₂(X, XS), YS) -> MARK₁(X)
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)
MARK₁(app₂(X1, X2)) -> MARK₁(X2)

Used ordering: Polynomial Order [17,21] with Interpretation:

POL( A__ZWADR₂(x₁, x₂) ) = max{0, x₁ + x₂ - 1}

POL( cons₂(x₁, x₂) ) = x₁ + 1

POL( MARK₁(x₁) ) = max{0, x₁ - 1}

POL( app₂(x₁, x₂) ) = x₁ + x₂ + 1

POL( A__APP₂(x₁, x₂) ) = max{0, x₁ + x₂ - 1}

POL( mark₁(x₁) ) = x₁

POL( zWadr₂(x₁, x₂) ) = x₁ + x₂ + 1

POL( prefix₁(x₁) ) = x₁ + 1

POL( nil ) = 0

POL( s₁(x₁) ) = x₁

POL( from₁(x₁) ) = x₁ + 1

POL( A__FROM₁(x₁) ) = max{0, x₁ - 1}

POL( a__zWadr₂(x₁, x₂) ) = x₁ + x₂ + 1

POL( a__prefix₁(x₁) ) = x₁ + 1

POL( a__app₂(x₁, x₂) ) = x₁ + x₂ + 1

POL( a__from₁(x₁) ) = x₁ + 1

The following usable rules [14] were oriented:

a__prefix₁(X) -> prefix₁(X)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
a__app₂(nil, YS) -> mark₁(YS)
mark₁(nil) -> nil
a__from₁(X) -> from₁(X)
a__zWadr₂(nil, YS) -> nil
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__app₂(X1, X2) -> app₂(X1, X2)
a__zWadr₂(XS, nil) -> nil
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

            ↳ QDP

              ↳ DependencyGraphProof

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

MARK₁(app₂(X1, X2)) -> A__APP₂(mark₁(X1), mark₁(X2))
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X1)
MARK₁(prefix₁(X)) -> MARK₁(X)
A__APP₂(nil, YS) -> MARK₁(YS)
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X2)
MARK₁(app₂(X1, X2)) -> MARK₁(X1)
MARK₁(s₁(X)) -> MARK₁(X)
MARK₁(zWadr₂(X1, X2)) -> A__ZWADR₂(mark₁(X1), mark₁(X2))
MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
A__APP₂(cons₂(X, XS), YS) -> MARK₁(X)
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)
MARK₁(app₂(X1, X2)) -> MARK₁(X2)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [13,14,18] contains 1 SCC with 1 less node.

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

            ↳ QDP

              ↳ DependencyGraphProof

                ↳ QDP

                  ↳ QDPOrderProof

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

MARK₁(app₂(X1, X2)) -> A__APP₂(mark₁(X1), mark₁(X2))
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X1)
MARK₁(prefix₁(X)) -> MARK₁(X)
A__APP₂(nil, YS) -> MARK₁(YS)
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X2)
MARK₁(app₂(X1, X2)) -> MARK₁(X1)
MARK₁(s₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> MARK₁(X)
A__APP₂(cons₂(X, XS), YS) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
A__FROM₁(X) -> MARK₁(X)
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
MARK₁(app₂(X1, X2)) -> MARK₁(X2)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [13].

The following pairs can be oriented strictly and are deleted.

MARK₁(app₂(X1, X2)) -> A__APP₂(mark₁(X1), mark₁(X2))
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X1)
MARK₁(zWadr₂(X1, X2)) -> MARK₁(X2)
MARK₁(app₂(X1, X2)) -> MARK₁(X1)
MARK₁(app₂(X1, X2)) -> MARK₁(X2)

The remaining pairs can at least be oriented weakly.

MARK₁(prefix₁(X)) -> MARK₁(X)
A__APP₂(nil, YS) -> MARK₁(YS)
MARK₁(s₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> MARK₁(X)
A__APP₂(cons₂(X, XS), YS) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
A__FROM₁(X) -> MARK₁(X)
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)

Used ordering: Polynomial Order [17,21] with Interpretation:

POL( MARK₁(x₁) ) = x₁

POL( app₂(x₁, x₂) ) = x₁ + x₂ + 1

POL( A__APP₂(x₁, x₂) ) = x₁ + x₂

POL( mark₁(x₁) ) = x₁

POL( zWadr₂(x₁, x₂) ) = x₁ + x₂ + 1

POL( prefix₁(x₁) ) = x₁

POL( s₁(x₁) ) = x₁

POL( from₁(x₁) ) = x₁

POL( cons₂(x₁, x₂) ) = x₁

POL( A__FROM₁(x₁) ) = x₁

POL( nil ) = 0

POL( a__zWadr₂(x₁, x₂) ) = x₁ + x₂ + 1

POL( a__prefix₁(x₁) ) = x₁

POL( a__app₂(x₁, x₂) ) = x₁ + x₂ + 1

POL( a__from₁(x₁) ) = x₁

The following usable rules [14] were oriented:

a__prefix₁(X) -> prefix₁(X)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
a__app₂(nil, YS) -> mark₁(YS)
mark₁(nil) -> nil
a__from₁(X) -> from₁(X)
a__zWadr₂(nil, YS) -> nil
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__app₂(X1, X2) -> app₂(X1, X2)
a__zWadr₂(XS, nil) -> nil
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

            ↳ QDP

              ↳ DependencyGraphProof

                ↳ QDP

                  ↳ QDPOrderProof

                    ↳ QDP

                      ↳ DependencyGraphProof

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

MARK₁(s₁(X)) -> MARK₁(X)
MARK₁(prefix₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
A__APP₂(cons₂(X, XS), YS) -> MARK₁(X)
A__APP₂(nil, YS) -> MARK₁(YS)
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [13,14,18] contains 1 SCC with 2 less nodes.

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

            ↳ QDP

              ↳ DependencyGraphProof

                ↳ QDP

                  ↳ QDPOrderProof

                    ↳ QDP

                      ↳ DependencyGraphProof

                        ↳ QDP

                          ↳ QDPOrderProof

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

MARK₁(s₁(X)) -> MARK₁(X)
MARK₁(prefix₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [13].

The following pairs can be oriented strictly and are deleted.

MARK₁(s₁(X)) -> MARK₁(X)

The remaining pairs can at least be oriented weakly.

MARK₁(prefix₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)

Used ordering: Polynomial Order [17,21] with Interpretation:

POL( MARK₁(x₁) ) = x₁

POL( s₁(x₁) ) = x₁ + 1

POL( prefix₁(x₁) ) = x₁

POL( from₁(x₁) ) = x₁

POL( A__FROM₁(x₁) ) = x₁

POL( mark₁(x₁) ) = x₁

POL( cons₂(x₁, x₂) ) = x₁

POL( nil ) = 0

POL( zWadr₂(x₁, x₂) ) = x₁ + x₂

POL( a__zWadr₂(x₁, x₂) ) = x₁ + x₂

POL( a__prefix₁(x₁) ) = x₁

POL( app₂(x₁, x₂) ) = x₁ + x₂

POL( a__app₂(x₁, x₂) ) = x₁ + x₂

POL( a__from₁(x₁) ) = x₁

The following usable rules [14] were oriented:

a__prefix₁(X) -> prefix₁(X)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
a__app₂(nil, YS) -> mark₁(YS)
mark₁(nil) -> nil
a__from₁(X) -> from₁(X)
a__zWadr₂(nil, YS) -> nil
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__app₂(X1, X2) -> app₂(X1, X2)
a__zWadr₂(XS, nil) -> nil
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

            ↳ QDP

              ↳ DependencyGraphProof

                ↳ QDP

                  ↳ QDPOrderProof

                    ↳ QDP

                      ↳ DependencyGraphProof

                        ↳ QDP

                          ↳ QDPOrderProof

                            ↳ QDP

                              ↳ QDPOrderProof

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

MARK₁(prefix₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
A__FROM₁(X) -> MARK₁(X)
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [13].

The following pairs can be oriented strictly and are deleted.

MARK₁(prefix₁(X)) -> MARK₁(X)

The remaining pairs can at least be oriented weakly.

MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
A__FROM₁(X) -> MARK₁(X)
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)

Used ordering: Polynomial Order [17,21] with Interpretation:

POL( MARK₁(x₁) ) = x₁

POL( prefix₁(x₁) ) = x₁ + 1

POL( from₁(x₁) ) = x₁

POL( A__FROM₁(x₁) ) = x₁

POL( mark₁(x₁) ) = x₁

POL( cons₂(x₁, x₂) ) = x₁

POL( s₁(x₁) ) = 0

POL( nil ) = 0

POL( zWadr₂(x₁, x₂) ) = x₁ + x₂

POL( a__zWadr₂(x₁, x₂) ) = x₁ + x₂

POL( a__prefix₁(x₁) ) = x₁ + 1

POL( app₂(x₁, x₂) ) = x₁ + x₂

POL( a__app₂(x₁, x₂) ) = x₁ + x₂

POL( a__from₁(x₁) ) = x₁

The following usable rules [14] were oriented:

a__prefix₁(X) -> prefix₁(X)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
a__app₂(nil, YS) -> mark₁(YS)
mark₁(nil) -> nil
a__from₁(X) -> from₁(X)
a__zWadr₂(nil, YS) -> nil
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__app₂(X1, X2) -> app₂(X1, X2)
a__zWadr₂(XS, nil) -> nil
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

            ↳ QDP

              ↳ DependencyGraphProof

                ↳ QDP

                  ↳ QDPOrderProof

                    ↳ QDP

                      ↳ DependencyGraphProof

                        ↳ QDP

                          ↳ QDPOrderProof

                            ↳ QDP

                              ↳ QDPOrderProof

                                ↳ QDP

                                  ↳ QDPOrderProof

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

MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [13].

The following pairs can be oriented strictly and are deleted.

MARK₁(from₁(X)) -> MARK₁(X)
MARK₁(from₁(X)) -> A__FROM₁(mark₁(X))

The remaining pairs can at least be oriented weakly.

MARK₁(cons₂(X1, X2)) -> MARK₁(X1)
A__FROM₁(X) -> MARK₁(X)

Used ordering: Polynomial Order [17,21] with Interpretation:

POL( MARK₁(x₁) ) = x₁

POL( from₁(x₁) ) = x₁ + 1

POL( A__FROM₁(x₁) ) = x₁

POL( mark₁(x₁) ) = x₁

POL( cons₂(x₁, x₂) ) = x₁

POL( s₁(x₁) ) = 0

POL( nil ) = 0

POL( zWadr₂(x₁, x₂) ) = x₁ + x₂

POL( a__zWadr₂(x₁, x₂) ) = x₁ + x₂

POL( prefix₁(x₁) ) = 0

POL( a__prefix₁(x₁) ) = 0

POL( app₂(x₁, x₂) ) = x₁ + x₂

POL( a__app₂(x₁, x₂) ) = x₁ + x₂

POL( a__from₁(x₁) ) = x₁ + 1

The following usable rules [14] were oriented:

a__prefix₁(X) -> prefix₁(X)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
a__app₂(nil, YS) -> mark₁(YS)
mark₁(nil) -> nil
a__from₁(X) -> from₁(X)
a__zWadr₂(nil, YS) -> nil
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__app₂(X1, X2) -> app₂(X1, X2)
a__zWadr₂(XS, nil) -> nil
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

            ↳ QDP

              ↳ DependencyGraphProof

                ↳ QDP

                  ↳ QDPOrderProof

                    ↳ QDP

                      ↳ DependencyGraphProof

                        ↳ QDP

                          ↳ QDPOrderProof

                            ↳ QDP

                              ↳ QDPOrderProof

                                ↳ QDP

                                  ↳ QDPOrderProof

                                    ↳ QDP

                                      ↳ DependencyGraphProof

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

A__FROM₁(X) -> MARK₁(X)
MARK₁(cons₂(X1, X2)) -> MARK₁(X1)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [13,14,18] contains 1 SCC with 1 less node.

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

            ↳ QDP

              ↳ DependencyGraphProof

                ↳ QDP

                  ↳ QDPOrderProof

                    ↳ QDP

                      ↳ DependencyGraphProof

                        ↳ QDP

                          ↳ QDPOrderProof

                            ↳ QDP

                              ↳ QDPOrderProof

                                ↳ QDP

                                  ↳ QDPOrderProof

                                    ↳ QDP

                                      ↳ DependencyGraphProof

                                        ↳ QDP

                                          ↳ QDPOrderProof

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

MARK₁(cons₂(X1, X2)) -> MARK₁(X1)

The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [13].

The following pairs can be oriented strictly and are deleted.

MARK₁(cons₂(X1, X2)) -> MARK₁(X1)

The remaining pairs can at least be oriented weakly.
none
Used ordering: Polynomial Order [17,21] with Interpretation:

POL( MARK₁(x₁) ) = x₁

POL( cons₂(x₁, x₂) ) = x₁ + 1

The following usable rules [14] were oriented: none

↳ QTRS

  ↳ DependencyPairsProof

    ↳ QDP

      ↳ DependencyGraphProof

        ↳ QDP

          ↳ QDPOrderProof

            ↳ QDP

              ↳ DependencyGraphProof

                ↳ QDP

                  ↳ QDPOrderProof

                    ↳ QDP

                      ↳ DependencyGraphProof

                        ↳ QDP

                          ↳ QDPOrderProof

                            ↳ QDP

                              ↳ QDPOrderProof

                                ↳ QDP

                                  ↳ QDPOrderProof

                                    ↳ QDP

                                      ↳ DependencyGraphProof

                                        ↳ QDP

                                          ↳ QDPOrderProof

                                            ↳ QDP

                                              ↳ PisEmptyProof

Q DP problem:
P is empty.
The TRS R consists of the following rules:

a__app₂(nil, YS) -> mark₁(YS)
a__app₂(cons₂(X, XS), YS) -> cons₂(mark₁(X), app₂(XS, YS))
a__from₁(X) -> cons₂(mark₁(X), from₁(s₁(X)))
a__zWadr₂(nil, YS) -> nil
a__zWadr₂(XS, nil) -> nil
a__zWadr₂(cons₂(X, XS), cons₂(Y, YS)) -> cons₂(a__app₂(mark₁(Y), cons₂(mark₁(X), nil)), zWadr₂(XS, YS))
a__prefix₁(L) -> cons₂(nil, zWadr₂(L, prefix₁(L)))
mark₁(app₂(X1, X2)) -> a__app₂(mark₁(X1), mark₁(X2))
mark₁(from₁(X)) -> a__from₁(mark₁(X))
mark₁(zWadr₂(X1, X2)) -> a__zWadr₂(mark₁(X1), mark₁(X2))
mark₁(prefix₁(X)) -> a__prefix₁(mark₁(X))
mark₁(nil) -> nil
mark₁(cons₂(X1, X2)) -> cons₂(mark₁(X1), X2)
mark₁(s₁(X)) -> s₁(mark₁(X))
a__app₂(X1, X2) -> app₂(X1, X2)
a__from₁(X) -> from₁(X)
a__zWadr₂(X1, X2) -> zWadr₂(X1, X2)
a__prefix₁(X) -> prefix₁(X)

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.