Left Termination of the query pattern sublist(b,b) w.r.t. the given Prolog program could not be shown:



PROLOG
  ↳ PrologToPiTRSProof
  ↳ PrologToPiTRSProof

append13({}0, Ys, Ys).
append13(.2(X, Xs), Ys, .2(X, Zs)) :- append13(Xs, Ys, Zs).
append23({}0, Ys, Ys).
append23(.2(X, Xs), Ys, .2(X, Zs)) :- append23(Xs, Ys, Zs).
sublist2(X, Y) :- append13(U, X, V), append23(V, W, Y).


With regard to the inferred argument filtering the predicates were used in the following modes:
sublist2: (b,b)
append13: (f,b,f)
append23: (b,f,b)
Transforming PROLOG into the following Term Rewriting System:
Pi-finite rewrite system:
The TRS R consists of the following rules:


sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg2(x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga2(x1, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga1(x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg1(x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag1(x2)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag1(x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg

Infinitary Constructor Rewriting Termination of PiTRS implies Termination of PROLOG



↳ PROLOG
  ↳ PrologToPiTRSProof
PiTRS
      ↳ DependencyPairsProof
  ↳ PrologToPiTRSProof

Pi-finite rewrite system:
The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg2(x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga2(x1, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga1(x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg1(x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag1(x2)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag1(x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg


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

SUBLIST_2_IN_GG2(X, Y) -> IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_in_aga3(U, X, V))
SUBLIST_2_IN_GG2(X, Y) -> APPEND1_3_IN_AGA3(U, X, V)
APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> IF_APPEND1_3_IN_1_AGA5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND1_3_IN_AGA3(Xs, Ys, Zs)
IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_out_aga3(U, X, V)) -> IF_SUBLIST_2_IN_2_GG4(X, Y, V, append2_3_in_gag3(V, W, Y))
IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_out_aga3(U, X, V)) -> APPEND2_3_IN_GAG3(V, W, Y)
APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> IF_APPEND2_3_IN_1_GAG5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND2_3_IN_GAG3(Xs, Ys, Zs)

The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg2(x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga2(x1, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga1(x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg1(x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag1(x2)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag1(x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg
IF_APPEND1_3_IN_1_AGA5(x1, x2, x3, x4, x5)  =  IF_APPEND1_3_IN_1_AGA1(x5)
SUBLIST_2_IN_GG2(x1, x2)  =  SUBLIST_2_IN_GG2(x1, x2)
IF_APPEND2_3_IN_1_GAG5(x1, x2, x3, x4, x5)  =  IF_APPEND2_3_IN_1_GAG1(x5)
APPEND1_3_IN_AGA3(x1, x2, x3)  =  APPEND1_3_IN_AGA1(x2)
IF_SUBLIST_2_IN_2_GG4(x1, x2, x3, x4)  =  IF_SUBLIST_2_IN_2_GG1(x4)
APPEND2_3_IN_GAG3(x1, x2, x3)  =  APPEND2_3_IN_GAG2(x1, x3)
IF_SUBLIST_2_IN_1_GG3(x1, x2, x3)  =  IF_SUBLIST_2_IN_1_GG2(x2, x3)

We have to consider all (P,R,Pi)-chains

↳ PROLOG
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
PiDP
          ↳ DependencyGraphProof
  ↳ PrologToPiTRSProof

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

SUBLIST_2_IN_GG2(X, Y) -> IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_in_aga3(U, X, V))
SUBLIST_2_IN_GG2(X, Y) -> APPEND1_3_IN_AGA3(U, X, V)
APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> IF_APPEND1_3_IN_1_AGA5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND1_3_IN_AGA3(Xs, Ys, Zs)
IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_out_aga3(U, X, V)) -> IF_SUBLIST_2_IN_2_GG4(X, Y, V, append2_3_in_gag3(V, W, Y))
IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_out_aga3(U, X, V)) -> APPEND2_3_IN_GAG3(V, W, Y)
APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> IF_APPEND2_3_IN_1_GAG5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND2_3_IN_GAG3(Xs, Ys, Zs)

The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg2(x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga2(x1, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga1(x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg1(x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag1(x2)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag1(x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg
IF_APPEND1_3_IN_1_AGA5(x1, x2, x3, x4, x5)  =  IF_APPEND1_3_IN_1_AGA1(x5)
SUBLIST_2_IN_GG2(x1, x2)  =  SUBLIST_2_IN_GG2(x1, x2)
IF_APPEND2_3_IN_1_GAG5(x1, x2, x3, x4, x5)  =  IF_APPEND2_3_IN_1_GAG1(x5)
APPEND1_3_IN_AGA3(x1, x2, x3)  =  APPEND1_3_IN_AGA1(x2)
IF_SUBLIST_2_IN_2_GG4(x1, x2, x3, x4)  =  IF_SUBLIST_2_IN_2_GG1(x4)
APPEND2_3_IN_GAG3(x1, x2, x3)  =  APPEND2_3_IN_GAG2(x1, x3)
IF_SUBLIST_2_IN_1_GG3(x1, x2, x3)  =  IF_SUBLIST_2_IN_1_GG2(x2, x3)

We have to consider all (P,R,Pi)-chains
The approximation of the Dependency Graph contains 2 SCCs with 6 less nodes.

↳ PROLOG
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
PiDP
                ↳ UsableRulesProof
              ↳ PiDP
  ↳ PrologToPiTRSProof

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

APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND2_3_IN_GAG3(Xs, Ys, Zs)

The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg2(x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga2(x1, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga1(x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg1(x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag1(x2)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag1(x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg
APPEND2_3_IN_GAG3(x1, x2, x3)  =  APPEND2_3_IN_GAG2(x1, x3)

We have to consider all (P,R,Pi)-chains
For (infinitary) constructor rewriting we can delete all non-usable rules from R.

↳ PROLOG
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
                ↳ UsableRulesProof
PiDP
                    ↳ PiDPToQDPProof
              ↳ PiDP
  ↳ PrologToPiTRSProof

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

APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND2_3_IN_GAG3(Xs, Ys, Zs)

R is empty.
The argument filtering Pi contains the following mapping:
._22(x1, x2)  =  ._21(x2)
APPEND2_3_IN_GAG3(x1, x2, x3)  =  APPEND2_3_IN_GAG2(x1, x3)

We have to consider all (P,R,Pi)-chains
Transforming (infinitary) constructor rewriting Pi-DP problem into ordinary QDP problem by application of Pi.

↳ PROLOG
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
                ↳ UsableRulesProof
                  ↳ PiDP
                    ↳ PiDPToQDPProof
QDP
                        ↳ QDPSizeChangeProof
              ↳ PiDP
  ↳ PrologToPiTRSProof

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

APPEND2_3_IN_GAG2(._21(Xs), ._21(Zs)) -> APPEND2_3_IN_GAG2(Xs, Zs)

R is empty.
Q is empty.
We have to consider all (P,Q,R)-chains.
The head symbols of this DP problem are {APPEND2_3_IN_GAG2}.
By using the subterm criterion together with the size-change analysis we have proven that there are no infinite chains for this DP problem.

From the DPs we obtained the following set of size-change graphs:



↳ PROLOG
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
PiDP
                ↳ UsableRulesProof
  ↳ PrologToPiTRSProof

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

APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND1_3_IN_AGA3(Xs, Ys, Zs)

The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg2(x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga2(x1, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga1(x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg1(x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag1(x2)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag1(x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg
APPEND1_3_IN_AGA3(x1, x2, x3)  =  APPEND1_3_IN_AGA1(x2)

We have to consider all (P,R,Pi)-chains
For (infinitary) constructor rewriting we can delete all non-usable rules from R.

↳ PROLOG
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
              ↳ PiDP
                ↳ UsableRulesProof
PiDP
                    ↳ PiDPToQDPProof
  ↳ PrologToPiTRSProof

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

APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND1_3_IN_AGA3(Xs, Ys, Zs)

R is empty.
The argument filtering Pi contains the following mapping:
._22(x1, x2)  =  ._21(x2)
APPEND1_3_IN_AGA3(x1, x2, x3)  =  APPEND1_3_IN_AGA1(x2)

We have to consider all (P,R,Pi)-chains
Transforming (infinitary) constructor rewriting Pi-DP problem into ordinary QDP problem by application of Pi.

↳ PROLOG
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
              ↳ PiDP
                ↳ UsableRulesProof
                  ↳ PiDP
                    ↳ PiDPToQDPProof
QDP
  ↳ PrologToPiTRSProof

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

APPEND1_3_IN_AGA1(Ys) -> APPEND1_3_IN_AGA1(Ys)

R is empty.
Q is empty.
We have to consider all (P,Q,R)-chains.
The head symbols of this DP problem are {APPEND1_3_IN_AGA1}.
With regard to the inferred argument filtering the predicates were used in the following modes:
sublist2: (b,b)
append13: (f,b,f)
append23: (b,f,b)
Transforming PROLOG into the following Term Rewriting System:
Pi-finite rewrite system:
The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg3(x1, x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga3(x1, x2, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga2(x3, x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg3(x1, x2, x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag3(x1, x2, x3)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag3(x2, x4, x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg2(x1, x2)

Infinitary Constructor Rewriting Termination of PiTRS implies Termination of PROLOG



↳ PROLOG
  ↳ PrologToPiTRSProof
  ↳ PrologToPiTRSProof
PiTRS
      ↳ DependencyPairsProof

Pi-finite rewrite system:
The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg3(x1, x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga3(x1, x2, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga2(x3, x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg3(x1, x2, x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag3(x1, x2, x3)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag3(x2, x4, x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg2(x1, x2)


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

SUBLIST_2_IN_GG2(X, Y) -> IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_in_aga3(U, X, V))
SUBLIST_2_IN_GG2(X, Y) -> APPEND1_3_IN_AGA3(U, X, V)
APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> IF_APPEND1_3_IN_1_AGA5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND1_3_IN_AGA3(Xs, Ys, Zs)
IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_out_aga3(U, X, V)) -> IF_SUBLIST_2_IN_2_GG4(X, Y, V, append2_3_in_gag3(V, W, Y))
IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_out_aga3(U, X, V)) -> APPEND2_3_IN_GAG3(V, W, Y)
APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> IF_APPEND2_3_IN_1_GAG5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND2_3_IN_GAG3(Xs, Ys, Zs)

The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg3(x1, x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga3(x1, x2, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga2(x3, x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg3(x1, x2, x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag3(x1, x2, x3)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag3(x2, x4, x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg2(x1, x2)
IF_APPEND1_3_IN_1_AGA5(x1, x2, x3, x4, x5)  =  IF_APPEND1_3_IN_1_AGA2(x3, x5)
SUBLIST_2_IN_GG2(x1, x2)  =  SUBLIST_2_IN_GG2(x1, x2)
IF_APPEND2_3_IN_1_GAG5(x1, x2, x3, x4, x5)  =  IF_APPEND2_3_IN_1_GAG3(x2, x4, x5)
APPEND1_3_IN_AGA3(x1, x2, x3)  =  APPEND1_3_IN_AGA1(x2)
IF_SUBLIST_2_IN_2_GG4(x1, x2, x3, x4)  =  IF_SUBLIST_2_IN_2_GG3(x1, x2, x4)
APPEND2_3_IN_GAG3(x1, x2, x3)  =  APPEND2_3_IN_GAG2(x1, x3)
IF_SUBLIST_2_IN_1_GG3(x1, x2, x3)  =  IF_SUBLIST_2_IN_1_GG3(x1, x2, x3)

We have to consider all (P,R,Pi)-chains

↳ PROLOG
  ↳ PrologToPiTRSProof
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
PiDP
          ↳ DependencyGraphProof

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

SUBLIST_2_IN_GG2(X, Y) -> IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_in_aga3(U, X, V))
SUBLIST_2_IN_GG2(X, Y) -> APPEND1_3_IN_AGA3(U, X, V)
APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> IF_APPEND1_3_IN_1_AGA5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND1_3_IN_AGA3(Xs, Ys, Zs)
IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_out_aga3(U, X, V)) -> IF_SUBLIST_2_IN_2_GG4(X, Y, V, append2_3_in_gag3(V, W, Y))
IF_SUBLIST_2_IN_1_GG3(X, Y, append1_3_out_aga3(U, X, V)) -> APPEND2_3_IN_GAG3(V, W, Y)
APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> IF_APPEND2_3_IN_1_GAG5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND2_3_IN_GAG3(Xs, Ys, Zs)

The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg3(x1, x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga3(x1, x2, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga2(x3, x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg3(x1, x2, x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag3(x1, x2, x3)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag3(x2, x4, x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg2(x1, x2)
IF_APPEND1_3_IN_1_AGA5(x1, x2, x3, x4, x5)  =  IF_APPEND1_3_IN_1_AGA2(x3, x5)
SUBLIST_2_IN_GG2(x1, x2)  =  SUBLIST_2_IN_GG2(x1, x2)
IF_APPEND2_3_IN_1_GAG5(x1, x2, x3, x4, x5)  =  IF_APPEND2_3_IN_1_GAG3(x2, x4, x5)
APPEND1_3_IN_AGA3(x1, x2, x3)  =  APPEND1_3_IN_AGA1(x2)
IF_SUBLIST_2_IN_2_GG4(x1, x2, x3, x4)  =  IF_SUBLIST_2_IN_2_GG3(x1, x2, x4)
APPEND2_3_IN_GAG3(x1, x2, x3)  =  APPEND2_3_IN_GAG2(x1, x3)
IF_SUBLIST_2_IN_1_GG3(x1, x2, x3)  =  IF_SUBLIST_2_IN_1_GG3(x1, x2, x3)

We have to consider all (P,R,Pi)-chains
The approximation of the Dependency Graph contains 2 SCCs with 6 less nodes.

↳ PROLOG
  ↳ PrologToPiTRSProof
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
PiDP
                ↳ UsableRulesProof
              ↳ PiDP

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

APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND2_3_IN_GAG3(Xs, Ys, Zs)

The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg3(x1, x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga3(x1, x2, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga2(x3, x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg3(x1, x2, x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag3(x1, x2, x3)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag3(x2, x4, x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg2(x1, x2)
APPEND2_3_IN_GAG3(x1, x2, x3)  =  APPEND2_3_IN_GAG2(x1, x3)

We have to consider all (P,R,Pi)-chains
For (infinitary) constructor rewriting we can delete all non-usable rules from R.

↳ PROLOG
  ↳ PrologToPiTRSProof
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
                ↳ UsableRulesProof
PiDP
                    ↳ PiDPToQDPProof
              ↳ PiDP

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

APPEND2_3_IN_GAG3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND2_3_IN_GAG3(Xs, Ys, Zs)

R is empty.
The argument filtering Pi contains the following mapping:
._22(x1, x2)  =  ._21(x2)
APPEND2_3_IN_GAG3(x1, x2, x3)  =  APPEND2_3_IN_GAG2(x1, x3)

We have to consider all (P,R,Pi)-chains
Transforming (infinitary) constructor rewriting Pi-DP problem into ordinary QDP problem by application of Pi.

↳ PROLOG
  ↳ PrologToPiTRSProof
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
                ↳ UsableRulesProof
                  ↳ PiDP
                    ↳ PiDPToQDPProof
QDP
                        ↳ QDPSizeChangeProof
              ↳ PiDP

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

APPEND2_3_IN_GAG2(._21(Xs), ._21(Zs)) -> APPEND2_3_IN_GAG2(Xs, Zs)

R is empty.
Q is empty.
We have to consider all (P,Q,R)-chains.
The head symbols of this DP problem are {APPEND2_3_IN_GAG2}.
By using the subterm criterion together with the size-change analysis we have proven that there are no infinite chains for this DP problem.

From the DPs we obtained the following set of size-change graphs:



↳ PROLOG
  ↳ PrologToPiTRSProof
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
PiDP
                ↳ UsableRulesProof

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

APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND1_3_IN_AGA3(Xs, Ys, Zs)

The TRS R consists of the following rules:

sublist_2_in_gg2(X, Y) -> if_sublist_2_in_1_gg3(X, Y, append1_3_in_aga3(U, X, V))
append1_3_in_aga3([]_0, Ys, Ys) -> append1_3_out_aga3([]_0, Ys, Ys)
append1_3_in_aga3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_in_aga3(Xs, Ys, Zs))
if_append1_3_in_1_aga5(X, Xs, Ys, Zs, append1_3_out_aga3(Xs, Ys, Zs)) -> append1_3_out_aga3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_1_gg3(X, Y, append1_3_out_aga3(U, X, V)) -> if_sublist_2_in_2_gg4(X, Y, V, append2_3_in_gag3(V, W, Y))
append2_3_in_gag3([]_0, Ys, Ys) -> append2_3_out_gag3([]_0, Ys, Ys)
append2_3_in_gag3(._22(X, Xs), Ys, ._22(X, Zs)) -> if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_in_gag3(Xs, Ys, Zs))
if_append2_3_in_1_gag5(X, Xs, Ys, Zs, append2_3_out_gag3(Xs, Ys, Zs)) -> append2_3_out_gag3(._22(X, Xs), Ys, ._22(X, Zs))
if_sublist_2_in_2_gg4(X, Y, V, append2_3_out_gag3(V, W, Y)) -> sublist_2_out_gg2(X, Y)

The argument filtering Pi contains the following mapping:
sublist_2_in_gg2(x1, x2)  =  sublist_2_in_gg2(x1, x2)
[]_0  =  []_0
._22(x1, x2)  =  ._21(x2)
if_sublist_2_in_1_gg3(x1, x2, x3)  =  if_sublist_2_in_1_gg3(x1, x2, x3)
append1_3_in_aga3(x1, x2, x3)  =  append1_3_in_aga1(x2)
append1_3_out_aga3(x1, x2, x3)  =  append1_3_out_aga3(x1, x2, x3)
if_append1_3_in_1_aga5(x1, x2, x3, x4, x5)  =  if_append1_3_in_1_aga2(x3, x5)
if_sublist_2_in_2_gg4(x1, x2, x3, x4)  =  if_sublist_2_in_2_gg3(x1, x2, x4)
append2_3_in_gag3(x1, x2, x3)  =  append2_3_in_gag2(x1, x3)
append2_3_out_gag3(x1, x2, x3)  =  append2_3_out_gag3(x1, x2, x3)
if_append2_3_in_1_gag5(x1, x2, x3, x4, x5)  =  if_append2_3_in_1_gag3(x2, x4, x5)
sublist_2_out_gg2(x1, x2)  =  sublist_2_out_gg2(x1, x2)
APPEND1_3_IN_AGA3(x1, x2, x3)  =  APPEND1_3_IN_AGA1(x2)

We have to consider all (P,R,Pi)-chains
For (infinitary) constructor rewriting we can delete all non-usable rules from R.

↳ PROLOG
  ↳ PrologToPiTRSProof
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
              ↳ PiDP
                ↳ UsableRulesProof
PiDP
                    ↳ PiDPToQDPProof

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

APPEND1_3_IN_AGA3(._22(X, Xs), Ys, ._22(X, Zs)) -> APPEND1_3_IN_AGA3(Xs, Ys, Zs)

R is empty.
The argument filtering Pi contains the following mapping:
._22(x1, x2)  =  ._21(x2)
APPEND1_3_IN_AGA3(x1, x2, x3)  =  APPEND1_3_IN_AGA1(x2)

We have to consider all (P,R,Pi)-chains
Transforming (infinitary) constructor rewriting Pi-DP problem into ordinary QDP problem by application of Pi.

↳ PROLOG
  ↳ PrologToPiTRSProof
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
              ↳ PiDP
                ↳ UsableRulesProof
                  ↳ PiDP
                    ↳ PiDPToQDPProof
QDP

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

APPEND1_3_IN_AGA1(Ys) -> APPEND1_3_IN_AGA1(Ys)

R is empty.
Q is empty.
We have to consider all (P,Q,R)-chains.
The head symbols of this DP problem are {APPEND1_3_IN_AGA1}.