Termination Proof using AProVE

Term Rewriting System R:
[X, Y, Z, X1, X2]
sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

Termination of R to be shown.

     ↳Dependency Pair Analysis

R contains the following Dependency Pairs:

SEL(s(X), cons(Y, Z)) -> SEL(X, activate(Z))
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
FIRST(0, Z) -> NIL
FIRST(s(X), cons(Y, Z)) -> CONS(Y, n_{_first}(X, activate(Z)))
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
FROM(X) -> CONS(X, n_{_from}(n_{_s}(X)))
SEL1(s(X), cons(Y, Z)) -> SEL1(X, activate(Z))
SEL1(s(X), cons(Y, Z)) -> ACTIVATE(Z)
SEL1(0, cons(X, Z)) -> QUOTE(X)
FIRST1(s(X), cons(Y, Z)) -> QUOTE(Y)
FIRST1(s(X), cons(Y, Z)) -> FIRST1(X, activate(Z))
FIRST1(s(X), cons(Y, Z)) -> ACTIVATE(Z)
QUOTE(n_{_s}(X)) -> QUOTE(activate(X))
QUOTE(n_{_s}(X)) -> ACTIVATE(X)
QUOTE(n_{_sel}(X, Z)) -> SEL1(activate(X), activate(Z))
QUOTE(n_{_sel}(X, Z)) -> ACTIVATE(X)
QUOTE(n_{_sel}(X, Z)) -> ACTIVATE(Z)
QUOTE1(n_{_cons}(X, Z)) -> QUOTE(activate(X))
QUOTE1(n_{_cons}(X, Z)) -> ACTIVATE(X)
QUOTE1(n_{_cons}(X, Z)) -> QUOTE1(activate(Z))
QUOTE1(n_{_cons}(X, Z)) -> ACTIVATE(Z)
QUOTE1(n_{_first}(X, Z)) -> FIRST1(activate(X), activate(Z))
QUOTE1(n_{_first}(X, Z)) -> ACTIVATE(X)
QUOTE1(n_{_first}(X, Z)) -> ACTIVATE(Z)
UNQUOTE(01) -> 0'
UNQUOTE(s1(X)) -> S(unquote(X))
UNQUOTE(s1(X)) -> UNQUOTE(X)
UNQUOTE1(nil1) -> NIL
UNQUOTE1(cons1(X, Z)) -> FCONS(unquote(X), unquote1(Z))
UNQUOTE1(cons1(X, Z)) -> UNQUOTE(X)
UNQUOTE1(cons1(X, Z)) -> UNQUOTE1(Z)
FCONS(X, Z) -> CONS(X, Z)
ACTIVATE(n_{_first}(X1, X2)) -> FIRST(activate(X1), activate(X2))
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_from}(X)) -> FROM(activate(X))
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_s}(X)) -> S(activate(X))
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_₀) -> 0'
ACTIVATE(n_{_cons}(X1, X2)) -> CONS(activate(X1), X2)
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_nil}) -> NIL
ACTIVATE(n_{_sel}(X1, X2)) -> SEL(activate(X1), activate(X2))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)

Furthermore, R contains six SCCs.

     ↳DPs

       →DP Problem 1

         ↳Narrowing Transformation

       →DP Problem 2

         ↳Remaining

       →DP Problem 3

         ↳Remaining

       →DP Problem 4

         ↳Remaining

       →DP Problem 5

         ↳Remaining

       →DP Problem 6

         ↳Remaining

Dependency Pairs:

ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_sel}(X1, X2)) -> SEL(activate(X1), activate(X2))
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_first}(X1, X2)) -> FIRST(activate(X1), activate(X2))
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
SEL(s(X), cons(Y, Z)) -> SEL(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

On this DP problem, a Narrowing SCC transformation can be performed.
As a result of transforming the rule

SEL(s(X), cons(Y, Z)) -> SEL(X, activate(Z))

eight new Dependency Pairs are created:

SEL(s(X), cons(Y, n_{_first}(X1', X2'))) -> SEL(X, first(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, n_{_from}(X''))) -> SEL(X, from(activate(X'')))
SEL(s(X), cons(Y, n_{_s}(X''))) -> SEL(X, s(activate(X'')))
SEL(s(X), cons(Y, n_₀)) -> SEL(X, 0)
SEL(s(X), cons(Y, n_{_cons}(X1', X2'))) -> SEL(X, cons(activate(X1'), X2'))
SEL(s(X), cons(Y, n_{_nil})) -> SEL(X, nil)
SEL(s(X), cons(Y, n_{_sel}(X1', X2'))) -> SEL(X, sel(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, Z')) -> SEL(X, Z')

The transformation is resulting in one new DP problem:

     ↳DPs

       →DP Problem 1

         ↳Nar

           →DP Problem 7

             ↳Narrowing Transformation

       →DP Problem 2

         ↳Remaining

       →DP Problem 3

         ↳Remaining

       →DP Problem 4

         ↳Remaining

       →DP Problem 5

         ↳Remaining

       →DP Problem 6

         ↳Remaining

Dependency Pairs:

SEL(s(X), cons(Y, Z')) -> SEL(X, Z')
SEL(s(X), cons(Y, n_{_sel}(X1', X2'))) -> SEL(X, sel(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, n_{_nil})) -> SEL(X, nil)
SEL(s(X), cons(Y, n_{_cons}(X1', X2'))) -> SEL(X, cons(activate(X1'), X2'))
SEL(s(X), cons(Y, n_₀)) -> SEL(X, 0)
SEL(s(X), cons(Y, n_{_s}(X''))) -> SEL(X, s(activate(X'')))
SEL(s(X), cons(Y, n_{_from}(X''))) -> SEL(X, from(activate(X'')))
SEL(s(X), cons(Y, n_{_first}(X1', X2'))) -> SEL(X, first(activate(X1'), activate(X2')))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_sel}(X1, X2)) -> SEL(activate(X1), activate(X2))
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_first}(X1, X2)) -> FIRST(activate(X1), activate(X2))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

On this DP problem, a Narrowing SCC transformation can be performed.
As a result of transforming the rule

ACTIVATE(n_{_first}(X1, X2)) -> FIRST(activate(X1), activate(X2))

16 new Dependency Pairs are created:

ACTIVATE(n_{_first}(n_{_first}(X1'', X2''), X2)) -> FIRST(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(n_{_from}(X'), X2)) -> FIRST(from(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_s}(X'), X2)) -> FIRST(s(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_₀, X2)) -> FIRST(0, activate(X2))
ACTIVATE(n_{_first}(n_{_cons}(X1'', X2''), X2)) -> FIRST(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_first}(n_{_nil}, X2)) -> FIRST(nil, activate(X2))
ACTIVATE(n_{_first}(n_{_sel}(X1'', X2''), X2)) -> FIRST(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(X1', X2)) -> FIRST(X1', activate(X2))
ACTIVATE(n_{_first}(X1, n_{_first}(X1'', X2''))) -> FIRST(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1, n_{_from}(X'))) -> FIRST(activate(X1), from(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_s}(X'))) -> FIRST(activate(X1), s(activate(X')))
ACTIVATE(n_{_first}(X1, n_₀)) -> FIRST(activate(X1), 0)
ACTIVATE(n_{_first}(X1, n_{_cons}(X1'', X2''))) -> FIRST(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_first}(X1, n_{_nil})) -> FIRST(activate(X1), nil)
ACTIVATE(n_{_first}(X1, n_{_sel}(X1'', X2''))) -> FIRST(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1, X2')) -> FIRST(activate(X1), X2')

The transformation is resulting in one new DP problem:

     ↳DPs

       →DP Problem 1

         ↳Nar

           →DP Problem 7

             ↳Nar

...

               →DP Problem 8

                 ↳Narrowing Transformation

       →DP Problem 2

         ↳Remaining

       →DP Problem 3

         ↳Remaining

       →DP Problem 4

         ↳Remaining

       →DP Problem 5

         ↳Remaining

       →DP Problem 6

         ↳Remaining

Dependency Pairs:

ACTIVATE(n_{_first}(X1, X2')) -> FIRST(activate(X1), X2')
ACTIVATE(n_{_first}(X1, n_{_sel}(X1'', X2''))) -> FIRST(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1, n_{_nil})) -> FIRST(activate(X1), nil)
ACTIVATE(n_{_first}(X1, n_{_cons}(X1'', X2''))) -> FIRST(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_first}(X1, n_₀)) -> FIRST(activate(X1), 0)
ACTIVATE(n_{_first}(X1, n_{_s}(X'))) -> FIRST(activate(X1), s(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_from}(X'))) -> FIRST(activate(X1), from(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_first}(X1'', X2''))) -> FIRST(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1', X2)) -> FIRST(X1', activate(X2))
ACTIVATE(n_{_first}(n_{_sel}(X1'', X2''), X2)) -> FIRST(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(n_{_nil}, X2)) -> FIRST(nil, activate(X2))
ACTIVATE(n_{_first}(n_{_cons}(X1'', X2''), X2)) -> FIRST(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_first}(n_₀, X2)) -> FIRST(0, activate(X2))
ACTIVATE(n_{_first}(n_{_s}(X'), X2)) -> FIRST(s(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_from}(X'), X2)) -> FIRST(from(activate(X')), activate(X2))
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_first}(n_{_first}(X1'', X2''), X2)) -> FIRST(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
SEL(s(X), cons(Y, n_{_sel}(X1', X2'))) -> SEL(X, sel(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, n_{_nil})) -> SEL(X, nil)
SEL(s(X), cons(Y, n_{_cons}(X1', X2'))) -> SEL(X, cons(activate(X1'), X2'))
SEL(s(X), cons(Y, n_₀)) -> SEL(X, 0)
SEL(s(X), cons(Y, n_{_s}(X''))) -> SEL(X, s(activate(X'')))
SEL(s(X), cons(Y, n_{_from}(X''))) -> SEL(X, from(activate(X'')))
SEL(s(X), cons(Y, n_{_first}(X1', X2'))) -> SEL(X, first(activate(X1'), activate(X2')))
ACTIVATE(n_{_sel}(X1, X2)) -> SEL(activate(X1), activate(X2))
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
SEL(s(X), cons(Y, Z')) -> SEL(X, Z')

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

On this DP problem, a Narrowing SCC transformation can be performed.
As a result of transforming the rule

ACTIVATE(n_{_sel}(X1, X2)) -> SEL(activate(X1), activate(X2))

16 new Dependency Pairs are created:

ACTIVATE(n_{_sel}(n_{_first}(X1'', X2''), X2)) -> SEL(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(n_{_from}(X'), X2)) -> SEL(from(activate(X')), activate(X2))
ACTIVATE(n_{_sel}(n_{_s}(X'), X2)) -> SEL(s(activate(X')), activate(X2))
ACTIVATE(n_{_sel}(n_₀, X2)) -> SEL(0, activate(X2))
ACTIVATE(n_{_sel}(n_{_cons}(X1'', X2''), X2)) -> SEL(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_sel}(n_{_nil}, X2)) -> SEL(nil, activate(X2))
ACTIVATE(n_{_sel}(n_{_sel}(X1'', X2''), X2)) -> SEL(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(X1', X2)) -> SEL(X1', activate(X2))
ACTIVATE(n_{_sel}(X1, n_{_first}(X1'', X2''))) -> SEL(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1, n_{_from}(X'))) -> SEL(activate(X1), from(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_s}(X'))) -> SEL(activate(X1), s(activate(X')))
ACTIVATE(n_{_sel}(X1, n_₀)) -> SEL(activate(X1), 0)
ACTIVATE(n_{_sel}(X1, n_{_cons}(X1'', X2''))) -> SEL(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_sel}(X1, n_{_nil})) -> SEL(activate(X1), nil)
ACTIVATE(n_{_sel}(X1, n_{_sel}(X1'', X2''))) -> SEL(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1, X2')) -> SEL(activate(X1), X2')

The transformation is resulting in one new DP problem:

     ↳DPs

       →DP Problem 1

         ↳Nar

       →DP Problem 2

         ↳Remaining Obligation(s)

       →DP Problem 3

         ↳Remaining Obligation(s)

       →DP Problem 4

         ↳Remaining Obligation(s)

       →DP Problem 5

         ↳Remaining Obligation(s)

       →DP Problem 6

         ↳Remaining Obligation(s)

The following remains to be proven:

Dependency Pairs:
ACTIVATE(n_{_sel}(X1, X2')) -> SEL(activate(X1), X2')
ACTIVATE(n_{_sel}(X1, n_{_sel}(X1'', X2''))) -> SEL(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1, n_{_nil})) -> SEL(activate(X1), nil)
ACTIVATE(n_{_sel}(X1, n_{_cons}(X1'', X2''))) -> SEL(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_sel}(X1, n_₀)) -> SEL(activate(X1), 0)
ACTIVATE(n_{_sel}(X1, n_{_s}(X'))) -> SEL(activate(X1), s(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_from}(X'))) -> SEL(activate(X1), from(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_first}(X1'', X2''))) -> SEL(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1', X2)) -> SEL(X1', activate(X2))
ACTIVATE(n_{_sel}(n_{_sel}(X1'', X2''), X2)) -> SEL(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(n_{_nil}, X2)) -> SEL(nil, activate(X2))
ACTIVATE(n_{_sel}(n_{_cons}(X1'', X2''), X2)) -> SEL(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_sel}(n_₀, X2)) -> SEL(0, activate(X2))
ACTIVATE(n_{_sel}(n_{_s}(X'), X2)) -> SEL(s(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z')) -> SEL(X, Z')
SEL(s(X), cons(Y, n_{_sel}(X1', X2'))) -> SEL(X, sel(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, n_{_nil})) -> SEL(X, nil)
SEL(s(X), cons(Y, n_{_cons}(X1', X2'))) -> SEL(X, cons(activate(X1'), X2'))
SEL(s(X), cons(Y, n_₀)) -> SEL(X, 0)
SEL(s(X), cons(Y, n_{_s}(X''))) -> SEL(X, s(activate(X'')))
SEL(s(X), cons(Y, n_{_from}(X''))) -> SEL(X, from(activate(X'')))
SEL(s(X), cons(Y, n_{_first}(X1', X2'))) -> SEL(X, first(activate(X1'), activate(X2')))
ACTIVATE(n_{_sel}(n_{_from}(X'), X2)) -> SEL(from(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_sel}(n_{_first}(X1'', X2''), X2)) -> SEL(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(X1, n_{_sel}(X1'', X2''))) -> FIRST(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1, n_{_nil})) -> FIRST(activate(X1), nil)
ACTIVATE(n_{_first}(X1, n_{_cons}(X1'', X2''))) -> FIRST(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_first}(X1, n_₀)) -> FIRST(activate(X1), 0)
ACTIVATE(n_{_first}(X1, n_{_s}(X'))) -> FIRST(activate(X1), s(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_from}(X'))) -> FIRST(activate(X1), from(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_first}(X1'', X2''))) -> FIRST(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1', X2)) -> FIRST(X1', activate(X2))
ACTIVATE(n_{_first}(n_{_sel}(X1'', X2''), X2)) -> FIRST(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(n_{_nil}, X2)) -> FIRST(nil, activate(X2))
ACTIVATE(n_{_first}(n_{_cons}(X1'', X2''), X2)) -> FIRST(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_first}(n_₀, X2)) -> FIRST(0, activate(X2))
ACTIVATE(n_{_first}(n_{_s}(X'), X2)) -> FIRST(s(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_from}(X'), X2)) -> FIRST(from(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_first}(X1'', X2''), X2)) -> FIRST(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_first}(X1, X2')) -> FIRST(activate(X1), X2')

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE(s1(X)) -> UNQUOTE(X)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pairs:
QUOTE(n_{_sel}(X, Z)) -> SEL1(activate(X), activate(Z))
QUOTE(n_{_s}(X)) -> QUOTE(activate(X))
SEL1(0, cons(X, Z)) -> QUOTE(X)
SEL1(s(X), cons(Y, Z)) -> SEL1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE1(cons1(X, Z)) -> UNQUOTE1(Z)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
FIRST1(s(X), cons(Y, Z)) -> FIRST1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
QUOTE1(n_{_cons}(X, Z)) -> QUOTE1(activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

     ↳DPs

       →DP Problem 1

         ↳Nar

       →DP Problem 2

         ↳Remaining Obligation(s)

       →DP Problem 3

         ↳Remaining Obligation(s)

       →DP Problem 4

         ↳Remaining Obligation(s)

       →DP Problem 5

         ↳Remaining Obligation(s)

       →DP Problem 6

         ↳Remaining Obligation(s)

The following remains to be proven:

Dependency Pairs:
ACTIVATE(n_{_sel}(X1, X2')) -> SEL(activate(X1), X2')
ACTIVATE(n_{_sel}(X1, n_{_sel}(X1'', X2''))) -> SEL(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1, n_{_nil})) -> SEL(activate(X1), nil)
ACTIVATE(n_{_sel}(X1, n_{_cons}(X1'', X2''))) -> SEL(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_sel}(X1, n_₀)) -> SEL(activate(X1), 0)
ACTIVATE(n_{_sel}(X1, n_{_s}(X'))) -> SEL(activate(X1), s(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_from}(X'))) -> SEL(activate(X1), from(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_first}(X1'', X2''))) -> SEL(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1', X2)) -> SEL(X1', activate(X2))
ACTIVATE(n_{_sel}(n_{_sel}(X1'', X2''), X2)) -> SEL(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(n_{_nil}, X2)) -> SEL(nil, activate(X2))
ACTIVATE(n_{_sel}(n_{_cons}(X1'', X2''), X2)) -> SEL(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_sel}(n_₀, X2)) -> SEL(0, activate(X2))
ACTIVATE(n_{_sel}(n_{_s}(X'), X2)) -> SEL(s(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z')) -> SEL(X, Z')
SEL(s(X), cons(Y, n_{_sel}(X1', X2'))) -> SEL(X, sel(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, n_{_nil})) -> SEL(X, nil)
SEL(s(X), cons(Y, n_{_cons}(X1', X2'))) -> SEL(X, cons(activate(X1'), X2'))
SEL(s(X), cons(Y, n_₀)) -> SEL(X, 0)
SEL(s(X), cons(Y, n_{_s}(X''))) -> SEL(X, s(activate(X'')))
SEL(s(X), cons(Y, n_{_from}(X''))) -> SEL(X, from(activate(X'')))
SEL(s(X), cons(Y, n_{_first}(X1', X2'))) -> SEL(X, first(activate(X1'), activate(X2')))
ACTIVATE(n_{_sel}(n_{_from}(X'), X2)) -> SEL(from(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_sel}(n_{_first}(X1'', X2''), X2)) -> SEL(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(X1, n_{_sel}(X1'', X2''))) -> FIRST(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1, n_{_nil})) -> FIRST(activate(X1), nil)
ACTIVATE(n_{_first}(X1, n_{_cons}(X1'', X2''))) -> FIRST(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_first}(X1, n_₀)) -> FIRST(activate(X1), 0)
ACTIVATE(n_{_first}(X1, n_{_s}(X'))) -> FIRST(activate(X1), s(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_from}(X'))) -> FIRST(activate(X1), from(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_first}(X1'', X2''))) -> FIRST(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1', X2)) -> FIRST(X1', activate(X2))
ACTIVATE(n_{_first}(n_{_sel}(X1'', X2''), X2)) -> FIRST(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(n_{_nil}, X2)) -> FIRST(nil, activate(X2))
ACTIVATE(n_{_first}(n_{_cons}(X1'', X2''), X2)) -> FIRST(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_first}(n_₀, X2)) -> FIRST(0, activate(X2))
ACTIVATE(n_{_first}(n_{_s}(X'), X2)) -> FIRST(s(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_from}(X'), X2)) -> FIRST(from(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_first}(X1'', X2''), X2)) -> FIRST(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_first}(X1, X2')) -> FIRST(activate(X1), X2')

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE(s1(X)) -> UNQUOTE(X)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pairs:
QUOTE(n_{_sel}(X, Z)) -> SEL1(activate(X), activate(Z))
QUOTE(n_{_s}(X)) -> QUOTE(activate(X))
SEL1(0, cons(X, Z)) -> QUOTE(X)
SEL1(s(X), cons(Y, Z)) -> SEL1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE1(cons1(X, Z)) -> UNQUOTE1(Z)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
FIRST1(s(X), cons(Y, Z)) -> FIRST1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
QUOTE1(n_{_cons}(X, Z)) -> QUOTE1(activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

     ↳DPs

       →DP Problem 1

         ↳Nar

       →DP Problem 2

         ↳Remaining Obligation(s)

       →DP Problem 3

         ↳Remaining Obligation(s)

       →DP Problem 4

         ↳Remaining Obligation(s)

       →DP Problem 5

         ↳Remaining Obligation(s)

       →DP Problem 6

         ↳Remaining Obligation(s)

The following remains to be proven:

Dependency Pairs:
ACTIVATE(n_{_sel}(X1, X2')) -> SEL(activate(X1), X2')
ACTIVATE(n_{_sel}(X1, n_{_sel}(X1'', X2''))) -> SEL(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1, n_{_nil})) -> SEL(activate(X1), nil)
ACTIVATE(n_{_sel}(X1, n_{_cons}(X1'', X2''))) -> SEL(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_sel}(X1, n_₀)) -> SEL(activate(X1), 0)
ACTIVATE(n_{_sel}(X1, n_{_s}(X'))) -> SEL(activate(X1), s(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_from}(X'))) -> SEL(activate(X1), from(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_first}(X1'', X2''))) -> SEL(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1', X2)) -> SEL(X1', activate(X2))
ACTIVATE(n_{_sel}(n_{_sel}(X1'', X2''), X2)) -> SEL(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(n_{_nil}, X2)) -> SEL(nil, activate(X2))
ACTIVATE(n_{_sel}(n_{_cons}(X1'', X2''), X2)) -> SEL(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_sel}(n_₀, X2)) -> SEL(0, activate(X2))
ACTIVATE(n_{_sel}(n_{_s}(X'), X2)) -> SEL(s(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z')) -> SEL(X, Z')
SEL(s(X), cons(Y, n_{_sel}(X1', X2'))) -> SEL(X, sel(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, n_{_nil})) -> SEL(X, nil)
SEL(s(X), cons(Y, n_{_cons}(X1', X2'))) -> SEL(X, cons(activate(X1'), X2'))
SEL(s(X), cons(Y, n_₀)) -> SEL(X, 0)
SEL(s(X), cons(Y, n_{_s}(X''))) -> SEL(X, s(activate(X'')))
SEL(s(X), cons(Y, n_{_from}(X''))) -> SEL(X, from(activate(X'')))
SEL(s(X), cons(Y, n_{_first}(X1', X2'))) -> SEL(X, first(activate(X1'), activate(X2')))
ACTIVATE(n_{_sel}(n_{_from}(X'), X2)) -> SEL(from(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_sel}(n_{_first}(X1'', X2''), X2)) -> SEL(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(X1, n_{_sel}(X1'', X2''))) -> FIRST(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1, n_{_nil})) -> FIRST(activate(X1), nil)
ACTIVATE(n_{_first}(X1, n_{_cons}(X1'', X2''))) -> FIRST(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_first}(X1, n_₀)) -> FIRST(activate(X1), 0)
ACTIVATE(n_{_first}(X1, n_{_s}(X'))) -> FIRST(activate(X1), s(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_from}(X'))) -> FIRST(activate(X1), from(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_first}(X1'', X2''))) -> FIRST(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1', X2)) -> FIRST(X1', activate(X2))
ACTIVATE(n_{_first}(n_{_sel}(X1'', X2''), X2)) -> FIRST(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(n_{_nil}, X2)) -> FIRST(nil, activate(X2))
ACTIVATE(n_{_first}(n_{_cons}(X1'', X2''), X2)) -> FIRST(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_first}(n_₀, X2)) -> FIRST(0, activate(X2))
ACTIVATE(n_{_first}(n_{_s}(X'), X2)) -> FIRST(s(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_from}(X'), X2)) -> FIRST(from(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_first}(X1'', X2''), X2)) -> FIRST(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_first}(X1, X2')) -> FIRST(activate(X1), X2')

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE(s1(X)) -> UNQUOTE(X)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pairs:
QUOTE(n_{_sel}(X, Z)) -> SEL1(activate(X), activate(Z))
QUOTE(n_{_s}(X)) -> QUOTE(activate(X))
SEL1(0, cons(X, Z)) -> QUOTE(X)
SEL1(s(X), cons(Y, Z)) -> SEL1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE1(cons1(X, Z)) -> UNQUOTE1(Z)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
FIRST1(s(X), cons(Y, Z)) -> FIRST1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
QUOTE1(n_{_cons}(X, Z)) -> QUOTE1(activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

     ↳DPs

       →DP Problem 1

         ↳Nar

       →DP Problem 2

         ↳Remaining Obligation(s)

       →DP Problem 3

         ↳Remaining Obligation(s)

       →DP Problem 4

         ↳Remaining Obligation(s)

       →DP Problem 5

         ↳Remaining Obligation(s)

       →DP Problem 6

         ↳Remaining Obligation(s)

The following remains to be proven:

Dependency Pairs:
ACTIVATE(n_{_sel}(X1, X2')) -> SEL(activate(X1), X2')
ACTIVATE(n_{_sel}(X1, n_{_sel}(X1'', X2''))) -> SEL(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1, n_{_nil})) -> SEL(activate(X1), nil)
ACTIVATE(n_{_sel}(X1, n_{_cons}(X1'', X2''))) -> SEL(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_sel}(X1, n_₀)) -> SEL(activate(X1), 0)
ACTIVATE(n_{_sel}(X1, n_{_s}(X'))) -> SEL(activate(X1), s(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_from}(X'))) -> SEL(activate(X1), from(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_first}(X1'', X2''))) -> SEL(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1', X2)) -> SEL(X1', activate(X2))
ACTIVATE(n_{_sel}(n_{_sel}(X1'', X2''), X2)) -> SEL(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(n_{_nil}, X2)) -> SEL(nil, activate(X2))
ACTIVATE(n_{_sel}(n_{_cons}(X1'', X2''), X2)) -> SEL(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_sel}(n_₀, X2)) -> SEL(0, activate(X2))
ACTIVATE(n_{_sel}(n_{_s}(X'), X2)) -> SEL(s(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z')) -> SEL(X, Z')
SEL(s(X), cons(Y, n_{_sel}(X1', X2'))) -> SEL(X, sel(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, n_{_nil})) -> SEL(X, nil)
SEL(s(X), cons(Y, n_{_cons}(X1', X2'))) -> SEL(X, cons(activate(X1'), X2'))
SEL(s(X), cons(Y, n_₀)) -> SEL(X, 0)
SEL(s(X), cons(Y, n_{_s}(X''))) -> SEL(X, s(activate(X'')))
SEL(s(X), cons(Y, n_{_from}(X''))) -> SEL(X, from(activate(X'')))
SEL(s(X), cons(Y, n_{_first}(X1', X2'))) -> SEL(X, first(activate(X1'), activate(X2')))
ACTIVATE(n_{_sel}(n_{_from}(X'), X2)) -> SEL(from(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_sel}(n_{_first}(X1'', X2''), X2)) -> SEL(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(X1, n_{_sel}(X1'', X2''))) -> FIRST(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1, n_{_nil})) -> FIRST(activate(X1), nil)
ACTIVATE(n_{_first}(X1, n_{_cons}(X1'', X2''))) -> FIRST(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_first}(X1, n_₀)) -> FIRST(activate(X1), 0)
ACTIVATE(n_{_first}(X1, n_{_s}(X'))) -> FIRST(activate(X1), s(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_from}(X'))) -> FIRST(activate(X1), from(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_first}(X1'', X2''))) -> FIRST(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1', X2)) -> FIRST(X1', activate(X2))
ACTIVATE(n_{_first}(n_{_sel}(X1'', X2''), X2)) -> FIRST(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(n_{_nil}, X2)) -> FIRST(nil, activate(X2))
ACTIVATE(n_{_first}(n_{_cons}(X1'', X2''), X2)) -> FIRST(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_first}(n_₀, X2)) -> FIRST(0, activate(X2))
ACTIVATE(n_{_first}(n_{_s}(X'), X2)) -> FIRST(s(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_from}(X'), X2)) -> FIRST(from(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_first}(X1'', X2''), X2)) -> FIRST(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_first}(X1, X2')) -> FIRST(activate(X1), X2')

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE(s1(X)) -> UNQUOTE(X)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pairs:
QUOTE(n_{_sel}(X, Z)) -> SEL1(activate(X), activate(Z))
QUOTE(n_{_s}(X)) -> QUOTE(activate(X))
SEL1(0, cons(X, Z)) -> QUOTE(X)
SEL1(s(X), cons(Y, Z)) -> SEL1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE1(cons1(X, Z)) -> UNQUOTE1(Z)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
FIRST1(s(X), cons(Y, Z)) -> FIRST1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
QUOTE1(n_{_cons}(X, Z)) -> QUOTE1(activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

     ↳DPs

       →DP Problem 1

         ↳Nar

       →DP Problem 2

         ↳Remaining Obligation(s)

       →DP Problem 3

         ↳Remaining Obligation(s)

       →DP Problem 4

         ↳Remaining Obligation(s)

       →DP Problem 5

         ↳Remaining Obligation(s)

       →DP Problem 6

         ↳Remaining Obligation(s)

The following remains to be proven:

Dependency Pairs:
ACTIVATE(n_{_sel}(X1, X2')) -> SEL(activate(X1), X2')
ACTIVATE(n_{_sel}(X1, n_{_sel}(X1'', X2''))) -> SEL(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1, n_{_nil})) -> SEL(activate(X1), nil)
ACTIVATE(n_{_sel}(X1, n_{_cons}(X1'', X2''))) -> SEL(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_sel}(X1, n_₀)) -> SEL(activate(X1), 0)
ACTIVATE(n_{_sel}(X1, n_{_s}(X'))) -> SEL(activate(X1), s(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_from}(X'))) -> SEL(activate(X1), from(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_first}(X1'', X2''))) -> SEL(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1', X2)) -> SEL(X1', activate(X2))
ACTIVATE(n_{_sel}(n_{_sel}(X1'', X2''), X2)) -> SEL(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(n_{_nil}, X2)) -> SEL(nil, activate(X2))
ACTIVATE(n_{_sel}(n_{_cons}(X1'', X2''), X2)) -> SEL(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_sel}(n_₀, X2)) -> SEL(0, activate(X2))
ACTIVATE(n_{_sel}(n_{_s}(X'), X2)) -> SEL(s(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z')) -> SEL(X, Z')
SEL(s(X), cons(Y, n_{_sel}(X1', X2'))) -> SEL(X, sel(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, n_{_nil})) -> SEL(X, nil)
SEL(s(X), cons(Y, n_{_cons}(X1', X2'))) -> SEL(X, cons(activate(X1'), X2'))
SEL(s(X), cons(Y, n_₀)) -> SEL(X, 0)
SEL(s(X), cons(Y, n_{_s}(X''))) -> SEL(X, s(activate(X'')))
SEL(s(X), cons(Y, n_{_from}(X''))) -> SEL(X, from(activate(X'')))
SEL(s(X), cons(Y, n_{_first}(X1', X2'))) -> SEL(X, first(activate(X1'), activate(X2')))
ACTIVATE(n_{_sel}(n_{_from}(X'), X2)) -> SEL(from(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_sel}(n_{_first}(X1'', X2''), X2)) -> SEL(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(X1, n_{_sel}(X1'', X2''))) -> FIRST(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1, n_{_nil})) -> FIRST(activate(X1), nil)
ACTIVATE(n_{_first}(X1, n_{_cons}(X1'', X2''))) -> FIRST(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_first}(X1, n_₀)) -> FIRST(activate(X1), 0)
ACTIVATE(n_{_first}(X1, n_{_s}(X'))) -> FIRST(activate(X1), s(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_from}(X'))) -> FIRST(activate(X1), from(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_first}(X1'', X2''))) -> FIRST(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1', X2)) -> FIRST(X1', activate(X2))
ACTIVATE(n_{_first}(n_{_sel}(X1'', X2''), X2)) -> FIRST(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(n_{_nil}, X2)) -> FIRST(nil, activate(X2))
ACTIVATE(n_{_first}(n_{_cons}(X1'', X2''), X2)) -> FIRST(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_first}(n_₀, X2)) -> FIRST(0, activate(X2))
ACTIVATE(n_{_first}(n_{_s}(X'), X2)) -> FIRST(s(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_from}(X'), X2)) -> FIRST(from(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_first}(X1'', X2''), X2)) -> FIRST(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_first}(X1, X2')) -> FIRST(activate(X1), X2')

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE(s1(X)) -> UNQUOTE(X)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pairs:
QUOTE(n_{_sel}(X, Z)) -> SEL1(activate(X), activate(Z))
QUOTE(n_{_s}(X)) -> QUOTE(activate(X))
SEL1(0, cons(X, Z)) -> QUOTE(X)
SEL1(s(X), cons(Y, Z)) -> SEL1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE1(cons1(X, Z)) -> UNQUOTE1(Z)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
FIRST1(s(X), cons(Y, Z)) -> FIRST1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
QUOTE1(n_{_cons}(X, Z)) -> QUOTE1(activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

     ↳DPs

       →DP Problem 1

         ↳Nar

       →DP Problem 2

         ↳Remaining Obligation(s)

       →DP Problem 3

         ↳Remaining Obligation(s)

       →DP Problem 4

         ↳Remaining Obligation(s)

       →DP Problem 5

         ↳Remaining Obligation(s)

       →DP Problem 6

         ↳Remaining Obligation(s)

The following remains to be proven:

Dependency Pairs:
ACTIVATE(n_{_sel}(X1, X2')) -> SEL(activate(X1), X2')
ACTIVATE(n_{_sel}(X1, n_{_sel}(X1'', X2''))) -> SEL(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1, n_{_nil})) -> SEL(activate(X1), nil)
ACTIVATE(n_{_sel}(X1, n_{_cons}(X1'', X2''))) -> SEL(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_sel}(X1, n_₀)) -> SEL(activate(X1), 0)
ACTIVATE(n_{_sel}(X1, n_{_s}(X'))) -> SEL(activate(X1), s(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_from}(X'))) -> SEL(activate(X1), from(activate(X')))
ACTIVATE(n_{_sel}(X1, n_{_first}(X1'', X2''))) -> SEL(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_sel}(X1', X2)) -> SEL(X1', activate(X2))
ACTIVATE(n_{_sel}(n_{_sel}(X1'', X2''), X2)) -> SEL(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(n_{_nil}, X2)) -> SEL(nil, activate(X2))
ACTIVATE(n_{_sel}(n_{_cons}(X1'', X2''), X2)) -> SEL(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_sel}(n_₀, X2)) -> SEL(0, activate(X2))
ACTIVATE(n_{_sel}(n_{_s}(X'), X2)) -> SEL(s(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z')) -> SEL(X, Z')
SEL(s(X), cons(Y, n_{_sel}(X1', X2'))) -> SEL(X, sel(activate(X1'), activate(X2')))
SEL(s(X), cons(Y, n_{_nil})) -> SEL(X, nil)
SEL(s(X), cons(Y, n_{_cons}(X1', X2'))) -> SEL(X, cons(activate(X1'), X2'))
SEL(s(X), cons(Y, n_₀)) -> SEL(X, 0)
SEL(s(X), cons(Y, n_{_s}(X''))) -> SEL(X, s(activate(X'')))
SEL(s(X), cons(Y, n_{_from}(X''))) -> SEL(X, from(activate(X'')))
SEL(s(X), cons(Y, n_{_first}(X1', X2'))) -> SEL(X, first(activate(X1'), activate(X2')))
ACTIVATE(n_{_sel}(n_{_from}(X'), X2)) -> SEL(from(activate(X')), activate(X2))
SEL(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_sel}(n_{_first}(X1'', X2''), X2)) -> SEL(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(X1, n_{_sel}(X1'', X2''))) -> FIRST(activate(X1), sel(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1, n_{_nil})) -> FIRST(activate(X1), nil)
ACTIVATE(n_{_first}(X1, n_{_cons}(X1'', X2''))) -> FIRST(activate(X1), cons(activate(X1''), X2''))
ACTIVATE(n_{_first}(X1, n_₀)) -> FIRST(activate(X1), 0)
ACTIVATE(n_{_first}(X1, n_{_s}(X'))) -> FIRST(activate(X1), s(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_from}(X'))) -> FIRST(activate(X1), from(activate(X')))
ACTIVATE(n_{_first}(X1, n_{_first}(X1'', X2''))) -> FIRST(activate(X1), first(activate(X1''), activate(X2'')))
ACTIVATE(n_{_first}(X1', X2)) -> FIRST(X1', activate(X2))
ACTIVATE(n_{_first}(n_{_sel}(X1'', X2''), X2)) -> FIRST(sel(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_first}(n_{_nil}, X2)) -> FIRST(nil, activate(X2))
ACTIVATE(n_{_first}(n_{_cons}(X1'', X2''), X2)) -> FIRST(cons(activate(X1''), X2''), activate(X2))
ACTIVATE(n_{_first}(n_₀, X2)) -> FIRST(0, activate(X2))
ACTIVATE(n_{_first}(n_{_s}(X'), X2)) -> FIRST(s(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_from}(X'), X2)) -> FIRST(from(activate(X')), activate(X2))
ACTIVATE(n_{_first}(n_{_first}(X1'', X2''), X2)) -> FIRST(first(activate(X1''), activate(X2'')), activate(X2))
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_sel}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_cons}(X1, X2)) -> ACTIVATE(X1)
ACTIVATE(n_{_s}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_from}(X)) -> ACTIVATE(X)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X2)
ACTIVATE(n_{_first}(X1, X2)) -> ACTIVATE(X1)
FIRST(s(X), cons(Y, Z)) -> ACTIVATE(Z)
ACTIVATE(n_{_first}(X1, X2')) -> FIRST(activate(X1), X2')

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE(s1(X)) -> UNQUOTE(X)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pairs:
QUOTE(n_{_sel}(X, Z)) -> SEL1(activate(X), activate(Z))
QUOTE(n_{_s}(X)) -> QUOTE(activate(X))
SEL1(0, cons(X, Z)) -> QUOTE(X)
SEL1(s(X), cons(Y, Z)) -> SEL1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
UNQUOTE1(cons1(X, Z)) -> UNQUOTE1(Z)

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
FIRST1(s(X), cons(Y, Z)) -> FIRST1(X, activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X
Dependency Pair:
QUOTE1(n_{_cons}(X, Z)) -> QUOTE1(activate(Z))

Rules:

sel(s(X), cons(Y, Z)) -> sel(X, activate(Z))
sel(0, cons(X, Z)) -> X
sel(X1, X2) -> n_{_sel}(X1, X2)
first(0, Z) -> nil
first(s(X), cons(Y, Z)) -> cons(Y, n_{_first}(X, activate(Z)))
first(X1, X2) -> n_{_first}(X1, X2)
from(X) -> cons(X, n_{_from}(n_{_s}(X)))
from(X) -> n_{_from}(X)
sel1(s(X), cons(Y, Z)) -> sel1(X, activate(Z))
sel1(0, cons(X, Z)) -> quote(X)
first1(0, Z) -> nil1
first1(s(X), cons(Y, Z)) -> cons1(quote(Y), first1(X, activate(Z)))
quote(n_₀) -> 01
quote(n_{_s}(X)) -> s1(quote(activate(X)))
quote(n_{_sel}(X, Z)) -> sel1(activate(X), activate(Z))
quote1(n_{_cons}(X, Z)) -> cons1(quote(activate(X)), quote1(activate(Z)))
quote1(n_{_nil}) -> nil1
quote1(n_{_first}(X, Z)) -> first1(activate(X), activate(Z))
unquote(01) -> 0
unquote(s1(X)) -> s(unquote(X))
unquote1(nil1) -> nil
unquote1(cons1(X, Z)) -> fcons(unquote(X), unquote1(Z))
fcons(X, Z) -> cons(X, Z)
s(X) -> n_{_s}(X)
0 -> n_₀
cons(X1, X2) -> n_{_cons}(X1, X2)
nil -> n_{_nil}
activate(n_{_first}(X1, X2)) -> first(activate(X1), activate(X2))
activate(n_{_from}(X)) -> from(activate(X))
activate(n_{_s}(X)) -> s(activate(X))
activate(n_₀) -> 0
activate(n_{_cons}(X1, X2)) -> cons(activate(X1), X2)
activate(n_{_nil}) -> nil
activate(n_{_sel}(X1, X2)) -> sel(activate(X1), activate(X2))
activate(X) -> X

The Proof could not be continued due to a Timeout.
Termination of R could not be shown.
Duration:
1:00 minutes