Left Termination of the query pattern ss_in_2(g, a) w.r.t. the given Prolog program could successfully be proven:



Prolog
  ↳ PrologToPiTRSProof

Clauses:

ss(Xs, Ys) :- ','(perm(Xs, Ys), ordered(Ys)).
perm([], []).
perm(Xs, .(X, Ys)) :- ','(app(X1s, .(X, X2s), Xs), ','(app(X1s, X2s, Zs), perm(Zs, Ys))).
app([], X, X).
app(.(X, Xs), Ys, .(X, Zs)) :- app(Xs, Ys, Zs).
ordered([]).
ordered(.(X, [])).
ordered(.(X, .(Y, Xs))) :- ','(less(X, s(Y)), ordered(.(Y, Xs))).
less(0, s(X)).
less(s(X), s(Y)) :- less(X, Y).

Queries:

ss(g,a).

We use the technique of [30]. With regard to the inferred argument filtering the predicates were used in the following modes:
ss_in: (b,f)
perm_in: (b,f)
app_in: (f,f,b) (b,b,f)
ordered_in: (b)
less_in: (b,b)
Transforming Prolog into the following Term Rewriting System:
Pi-finite rewrite system:
The TRS R consists of the following rules:

ss_in_ga(Xs, Ys) → U1_ga(Xs, Ys, perm_in_ga(Xs, Ys))
perm_in_ga([], []) → perm_out_ga([], [])
perm_in_ga(Xs, .(X, Ys)) → U3_ga(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))
U3_ga(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_ga(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U4_ga(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_ga(Xs, X, Ys, perm_in_ga(Zs, Ys))
U5_ga(Xs, X, Ys, perm_out_ga(Zs, Ys)) → perm_out_ga(Xs, .(X, Ys))
U1_ga(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_ga(Xs, Ys, ordered_in_g(Ys))
ordered_in_g([]) → ordered_out_g([])
ordered_in_g(.(X, [])) → ordered_out_g(.(X, []))
ordered_in_g(.(X, .(Y, Xs))) → U7_g(X, Y, Xs, less_in_gg(X, s(Y)))
less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U7_g(X, Y, Xs, less_out_gg(X, s(Y))) → U8_g(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U8_g(X, Y, Xs, ordered_out_g(.(Y, Xs))) → ordered_out_g(.(X, .(Y, Xs)))
U2_ga(Xs, Ys, ordered_out_g(Ys)) → ss_out_ga(Xs, Ys)

The argument filtering Pi contains the following mapping:
ss_in_ga(x1, x2)  =  ss_in_ga(x1)
U1_ga(x1, x2, x3)  =  U1_ga(x3)
perm_in_ga(x1, x2)  =  perm_in_ga(x1)
[]  =  []
perm_out_ga(x1, x2)  =  perm_out_ga(x2)
U3_ga(x1, x2, x3, x4)  =  U3_ga(x4)
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
U4_ga(x1, x2, x3, x4)  =  U4_ga(x2, x4)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U5_ga(x1, x2, x3, x4)  =  U5_ga(x2, x4)
U2_ga(x1, x2, x3)  =  U2_ga(x2, x3)
ordered_in_g(x1)  =  ordered_in_g(x1)
ordered_out_g(x1)  =  ordered_out_g
U7_g(x1, x2, x3, x4)  =  U7_g(x2, x3, x4)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U8_g(x1, x2, x3, x4)  =  U8_g(x4)
ss_out_ga(x1, x2)  =  ss_out_ga(x2)

Infinitary Constructor Rewriting Termination of PiTRS implies Termination of Prolog



↳ Prolog
  ↳ PrologToPiTRSProof
PiTRS
      ↳ DependencyPairsProof

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

ss_in_ga(Xs, Ys) → U1_ga(Xs, Ys, perm_in_ga(Xs, Ys))
perm_in_ga([], []) → perm_out_ga([], [])
perm_in_ga(Xs, .(X, Ys)) → U3_ga(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))
U3_ga(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_ga(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U4_ga(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_ga(Xs, X, Ys, perm_in_ga(Zs, Ys))
U5_ga(Xs, X, Ys, perm_out_ga(Zs, Ys)) → perm_out_ga(Xs, .(X, Ys))
U1_ga(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_ga(Xs, Ys, ordered_in_g(Ys))
ordered_in_g([]) → ordered_out_g([])
ordered_in_g(.(X, [])) → ordered_out_g(.(X, []))
ordered_in_g(.(X, .(Y, Xs))) → U7_g(X, Y, Xs, less_in_gg(X, s(Y)))
less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U7_g(X, Y, Xs, less_out_gg(X, s(Y))) → U8_g(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U8_g(X, Y, Xs, ordered_out_g(.(Y, Xs))) → ordered_out_g(.(X, .(Y, Xs)))
U2_ga(Xs, Ys, ordered_out_g(Ys)) → ss_out_ga(Xs, Ys)

The argument filtering Pi contains the following mapping:
ss_in_ga(x1, x2)  =  ss_in_ga(x1)
U1_ga(x1, x2, x3)  =  U1_ga(x3)
perm_in_ga(x1, x2)  =  perm_in_ga(x1)
[]  =  []
perm_out_ga(x1, x2)  =  perm_out_ga(x2)
U3_ga(x1, x2, x3, x4)  =  U3_ga(x4)
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
U4_ga(x1, x2, x3, x4)  =  U4_ga(x2, x4)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U5_ga(x1, x2, x3, x4)  =  U5_ga(x2, x4)
U2_ga(x1, x2, x3)  =  U2_ga(x2, x3)
ordered_in_g(x1)  =  ordered_in_g(x1)
ordered_out_g(x1)  =  ordered_out_g
U7_g(x1, x2, x3, x4)  =  U7_g(x2, x3, x4)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U8_g(x1, x2, x3, x4)  =  U8_g(x4)
ss_out_ga(x1, x2)  =  ss_out_ga(x2)


Using Dependency Pairs [1,30] we result in the following initial DP problem:
Pi DP problem:
The TRS P consists of the following rules:

SS_IN_GA(Xs, Ys) → U1_GA(Xs, Ys, perm_in_ga(Xs, Ys))
SS_IN_GA(Xs, Ys) → PERM_IN_GA(Xs, Ys)
PERM_IN_GA(Xs, .(X, Ys)) → U3_GA(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
PERM_IN_GA(Xs, .(X, Ys)) → APP_IN_AAG(X1s, .(X, X2s), Xs)
APP_IN_AAG(.(X, Xs), Ys, .(X, Zs)) → U6_AAG(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
APP_IN_AAG(.(X, Xs), Ys, .(X, Zs)) → APP_IN_AAG(Xs, Ys, Zs)
U3_GA(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_GA(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
U3_GA(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → APP_IN_GGA(X1s, X2s, Zs)
APP_IN_GGA(.(X, Xs), Ys, .(X, Zs)) → U6_GGA(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
APP_IN_GGA(.(X, Xs), Ys, .(X, Zs)) → APP_IN_GGA(Xs, Ys, Zs)
U4_GA(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_GA(Xs, X, Ys, perm_in_ga(Zs, Ys))
U4_GA(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → PERM_IN_GA(Zs, Ys)
U1_GA(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_GA(Xs, Ys, ordered_in_g(Ys))
U1_GA(Xs, Ys, perm_out_ga(Xs, Ys)) → ORDERED_IN_G(Ys)
ORDERED_IN_G(.(X, .(Y, Xs))) → U7_G(X, Y, Xs, less_in_gg(X, s(Y)))
ORDERED_IN_G(.(X, .(Y, Xs))) → LESS_IN_GG(X, s(Y))
LESS_IN_GG(s(X), s(Y)) → U9_GG(X, Y, less_in_gg(X, Y))
LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)
U7_G(X, Y, Xs, less_out_gg(X, s(Y))) → U8_G(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U7_G(X, Y, Xs, less_out_gg(X, s(Y))) → ORDERED_IN_G(.(Y, Xs))

The TRS R consists of the following rules:

ss_in_ga(Xs, Ys) → U1_ga(Xs, Ys, perm_in_ga(Xs, Ys))
perm_in_ga([], []) → perm_out_ga([], [])
perm_in_ga(Xs, .(X, Ys)) → U3_ga(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))
U3_ga(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_ga(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U4_ga(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_ga(Xs, X, Ys, perm_in_ga(Zs, Ys))
U5_ga(Xs, X, Ys, perm_out_ga(Zs, Ys)) → perm_out_ga(Xs, .(X, Ys))
U1_ga(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_ga(Xs, Ys, ordered_in_g(Ys))
ordered_in_g([]) → ordered_out_g([])
ordered_in_g(.(X, [])) → ordered_out_g(.(X, []))
ordered_in_g(.(X, .(Y, Xs))) → U7_g(X, Y, Xs, less_in_gg(X, s(Y)))
less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U7_g(X, Y, Xs, less_out_gg(X, s(Y))) → U8_g(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U8_g(X, Y, Xs, ordered_out_g(.(Y, Xs))) → ordered_out_g(.(X, .(Y, Xs)))
U2_ga(Xs, Ys, ordered_out_g(Ys)) → ss_out_ga(Xs, Ys)

The argument filtering Pi contains the following mapping:
ss_in_ga(x1, x2)  =  ss_in_ga(x1)
U1_ga(x1, x2, x3)  =  U1_ga(x3)
perm_in_ga(x1, x2)  =  perm_in_ga(x1)
[]  =  []
perm_out_ga(x1, x2)  =  perm_out_ga(x2)
U3_ga(x1, x2, x3, x4)  =  U3_ga(x4)
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
U4_ga(x1, x2, x3, x4)  =  U4_ga(x2, x4)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U5_ga(x1, x2, x3, x4)  =  U5_ga(x2, x4)
U2_ga(x1, x2, x3)  =  U2_ga(x2, x3)
ordered_in_g(x1)  =  ordered_in_g(x1)
ordered_out_g(x1)  =  ordered_out_g
U7_g(x1, x2, x3, x4)  =  U7_g(x2, x3, x4)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U8_g(x1, x2, x3, x4)  =  U8_g(x4)
ss_out_ga(x1, x2)  =  ss_out_ga(x2)
APP_IN_GGA(x1, x2, x3)  =  APP_IN_GGA(x1, x2)
U7_G(x1, x2, x3, x4)  =  U7_G(x2, x3, x4)
U6_AAG(x1, x2, x3, x4, x5)  =  U6_AAG(x1, x5)
SS_IN_GA(x1, x2)  =  SS_IN_GA(x1)
U3_GA(x1, x2, x3, x4)  =  U3_GA(x4)
LESS_IN_GG(x1, x2)  =  LESS_IN_GG(x1, x2)
U6_GGA(x1, x2, x3, x4, x5)  =  U6_GGA(x1, x5)
U5_GA(x1, x2, x3, x4)  =  U5_GA(x2, x4)
ORDERED_IN_G(x1)  =  ORDERED_IN_G(x1)
U4_GA(x1, x2, x3, x4)  =  U4_GA(x2, x4)
U9_GG(x1, x2, x3)  =  U9_GG(x3)
APP_IN_AAG(x1, x2, x3)  =  APP_IN_AAG(x3)
U8_G(x1, x2, x3, x4)  =  U8_G(x4)
U1_GA(x1, x2, x3)  =  U1_GA(x3)
U2_GA(x1, x2, x3)  =  U2_GA(x2, x3)
PERM_IN_GA(x1, x2)  =  PERM_IN_GA(x1)

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

↳ Prolog
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
PiDP
          ↳ DependencyGraphProof

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

SS_IN_GA(Xs, Ys) → U1_GA(Xs, Ys, perm_in_ga(Xs, Ys))
SS_IN_GA(Xs, Ys) → PERM_IN_GA(Xs, Ys)
PERM_IN_GA(Xs, .(X, Ys)) → U3_GA(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
PERM_IN_GA(Xs, .(X, Ys)) → APP_IN_AAG(X1s, .(X, X2s), Xs)
APP_IN_AAG(.(X, Xs), Ys, .(X, Zs)) → U6_AAG(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
APP_IN_AAG(.(X, Xs), Ys, .(X, Zs)) → APP_IN_AAG(Xs, Ys, Zs)
U3_GA(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_GA(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
U3_GA(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → APP_IN_GGA(X1s, X2s, Zs)
APP_IN_GGA(.(X, Xs), Ys, .(X, Zs)) → U6_GGA(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
APP_IN_GGA(.(X, Xs), Ys, .(X, Zs)) → APP_IN_GGA(Xs, Ys, Zs)
U4_GA(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_GA(Xs, X, Ys, perm_in_ga(Zs, Ys))
U4_GA(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → PERM_IN_GA(Zs, Ys)
U1_GA(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_GA(Xs, Ys, ordered_in_g(Ys))
U1_GA(Xs, Ys, perm_out_ga(Xs, Ys)) → ORDERED_IN_G(Ys)
ORDERED_IN_G(.(X, .(Y, Xs))) → U7_G(X, Y, Xs, less_in_gg(X, s(Y)))
ORDERED_IN_G(.(X, .(Y, Xs))) → LESS_IN_GG(X, s(Y))
LESS_IN_GG(s(X), s(Y)) → U9_GG(X, Y, less_in_gg(X, Y))
LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)
U7_G(X, Y, Xs, less_out_gg(X, s(Y))) → U8_G(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U7_G(X, Y, Xs, less_out_gg(X, s(Y))) → ORDERED_IN_G(.(Y, Xs))

The TRS R consists of the following rules:

ss_in_ga(Xs, Ys) → U1_ga(Xs, Ys, perm_in_ga(Xs, Ys))
perm_in_ga([], []) → perm_out_ga([], [])
perm_in_ga(Xs, .(X, Ys)) → U3_ga(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))
U3_ga(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_ga(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U4_ga(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_ga(Xs, X, Ys, perm_in_ga(Zs, Ys))
U5_ga(Xs, X, Ys, perm_out_ga(Zs, Ys)) → perm_out_ga(Xs, .(X, Ys))
U1_ga(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_ga(Xs, Ys, ordered_in_g(Ys))
ordered_in_g([]) → ordered_out_g([])
ordered_in_g(.(X, [])) → ordered_out_g(.(X, []))
ordered_in_g(.(X, .(Y, Xs))) → U7_g(X, Y, Xs, less_in_gg(X, s(Y)))
less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U7_g(X, Y, Xs, less_out_gg(X, s(Y))) → U8_g(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U8_g(X, Y, Xs, ordered_out_g(.(Y, Xs))) → ordered_out_g(.(X, .(Y, Xs)))
U2_ga(Xs, Ys, ordered_out_g(Ys)) → ss_out_ga(Xs, Ys)

The argument filtering Pi contains the following mapping:
ss_in_ga(x1, x2)  =  ss_in_ga(x1)
U1_ga(x1, x2, x3)  =  U1_ga(x3)
perm_in_ga(x1, x2)  =  perm_in_ga(x1)
[]  =  []
perm_out_ga(x1, x2)  =  perm_out_ga(x2)
U3_ga(x1, x2, x3, x4)  =  U3_ga(x4)
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
U4_ga(x1, x2, x3, x4)  =  U4_ga(x2, x4)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U5_ga(x1, x2, x3, x4)  =  U5_ga(x2, x4)
U2_ga(x1, x2, x3)  =  U2_ga(x2, x3)
ordered_in_g(x1)  =  ordered_in_g(x1)
ordered_out_g(x1)  =  ordered_out_g
U7_g(x1, x2, x3, x4)  =  U7_g(x2, x3, x4)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U8_g(x1, x2, x3, x4)  =  U8_g(x4)
ss_out_ga(x1, x2)  =  ss_out_ga(x2)
APP_IN_GGA(x1, x2, x3)  =  APP_IN_GGA(x1, x2)
U7_G(x1, x2, x3, x4)  =  U7_G(x2, x3, x4)
U6_AAG(x1, x2, x3, x4, x5)  =  U6_AAG(x1, x5)
SS_IN_GA(x1, x2)  =  SS_IN_GA(x1)
U3_GA(x1, x2, x3, x4)  =  U3_GA(x4)
LESS_IN_GG(x1, x2)  =  LESS_IN_GG(x1, x2)
U6_GGA(x1, x2, x3, x4, x5)  =  U6_GGA(x1, x5)
U5_GA(x1, x2, x3, x4)  =  U5_GA(x2, x4)
ORDERED_IN_G(x1)  =  ORDERED_IN_G(x1)
U4_GA(x1, x2, x3, x4)  =  U4_GA(x2, x4)
U9_GG(x1, x2, x3)  =  U9_GG(x3)
APP_IN_AAG(x1, x2, x3)  =  APP_IN_AAG(x3)
U8_G(x1, x2, x3, x4)  =  U8_G(x4)
U1_GA(x1, x2, x3)  =  U1_GA(x3)
U2_GA(x1, x2, x3)  =  U2_GA(x2, x3)
PERM_IN_GA(x1, x2)  =  PERM_IN_GA(x1)

We have to consider all (P,R,Pi)-chains
The approximation of the Dependency Graph [30] contains 5 SCCs with 12 less nodes.

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

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

LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)

The TRS R consists of the following rules:

ss_in_ga(Xs, Ys) → U1_ga(Xs, Ys, perm_in_ga(Xs, Ys))
perm_in_ga([], []) → perm_out_ga([], [])
perm_in_ga(Xs, .(X, Ys)) → U3_ga(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))
U3_ga(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_ga(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U4_ga(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_ga(Xs, X, Ys, perm_in_ga(Zs, Ys))
U5_ga(Xs, X, Ys, perm_out_ga(Zs, Ys)) → perm_out_ga(Xs, .(X, Ys))
U1_ga(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_ga(Xs, Ys, ordered_in_g(Ys))
ordered_in_g([]) → ordered_out_g([])
ordered_in_g(.(X, [])) → ordered_out_g(.(X, []))
ordered_in_g(.(X, .(Y, Xs))) → U7_g(X, Y, Xs, less_in_gg(X, s(Y)))
less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U7_g(X, Y, Xs, less_out_gg(X, s(Y))) → U8_g(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U8_g(X, Y, Xs, ordered_out_g(.(Y, Xs))) → ordered_out_g(.(X, .(Y, Xs)))
U2_ga(Xs, Ys, ordered_out_g(Ys)) → ss_out_ga(Xs, Ys)

The argument filtering Pi contains the following mapping:
ss_in_ga(x1, x2)  =  ss_in_ga(x1)
U1_ga(x1, x2, x3)  =  U1_ga(x3)
perm_in_ga(x1, x2)  =  perm_in_ga(x1)
[]  =  []
perm_out_ga(x1, x2)  =  perm_out_ga(x2)
U3_ga(x1, x2, x3, x4)  =  U3_ga(x4)
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
U4_ga(x1, x2, x3, x4)  =  U4_ga(x2, x4)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U5_ga(x1, x2, x3, x4)  =  U5_ga(x2, x4)
U2_ga(x1, x2, x3)  =  U2_ga(x2, x3)
ordered_in_g(x1)  =  ordered_in_g(x1)
ordered_out_g(x1)  =  ordered_out_g
U7_g(x1, x2, x3, x4)  =  U7_g(x2, x3, x4)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U8_g(x1, x2, x3, x4)  =  U8_g(x4)
ss_out_ga(x1, x2)  =  ss_out_ga(x2)
LESS_IN_GG(x1, x2)  =  LESS_IN_GG(x1, x2)

We have to consider all (P,R,Pi)-chains
For (infinitary) constructor rewriting [30] we can delete all non-usable rules from R.

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

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

LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)

R is empty.
Pi is empty.
We have to consider all (P,R,Pi)-chains
Transforming (infinitary) constructor rewriting Pi-DP problem [30] into ordinary QDP problem [15] by application of Pi.

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

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

LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)

R is empty.
Q is empty.
We have to consider all (P,Q,R)-chains.
By using the subterm criterion [20] together with the size-change analysis [32] 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
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP

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

ORDERED_IN_G(.(X, .(Y, Xs))) → U7_G(X, Y, Xs, less_in_gg(X, s(Y)))
U7_G(X, Y, Xs, less_out_gg(X, s(Y))) → ORDERED_IN_G(.(Y, Xs))

The TRS R consists of the following rules:

ss_in_ga(Xs, Ys) → U1_ga(Xs, Ys, perm_in_ga(Xs, Ys))
perm_in_ga([], []) → perm_out_ga([], [])
perm_in_ga(Xs, .(X, Ys)) → U3_ga(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))
U3_ga(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_ga(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U4_ga(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_ga(Xs, X, Ys, perm_in_ga(Zs, Ys))
U5_ga(Xs, X, Ys, perm_out_ga(Zs, Ys)) → perm_out_ga(Xs, .(X, Ys))
U1_ga(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_ga(Xs, Ys, ordered_in_g(Ys))
ordered_in_g([]) → ordered_out_g([])
ordered_in_g(.(X, [])) → ordered_out_g(.(X, []))
ordered_in_g(.(X, .(Y, Xs))) → U7_g(X, Y, Xs, less_in_gg(X, s(Y)))
less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U7_g(X, Y, Xs, less_out_gg(X, s(Y))) → U8_g(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U8_g(X, Y, Xs, ordered_out_g(.(Y, Xs))) → ordered_out_g(.(X, .(Y, Xs)))
U2_ga(Xs, Ys, ordered_out_g(Ys)) → ss_out_ga(Xs, Ys)

The argument filtering Pi contains the following mapping:
ss_in_ga(x1, x2)  =  ss_in_ga(x1)
U1_ga(x1, x2, x3)  =  U1_ga(x3)
perm_in_ga(x1, x2)  =  perm_in_ga(x1)
[]  =  []
perm_out_ga(x1, x2)  =  perm_out_ga(x2)
U3_ga(x1, x2, x3, x4)  =  U3_ga(x4)
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
U4_ga(x1, x2, x3, x4)  =  U4_ga(x2, x4)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U5_ga(x1, x2, x3, x4)  =  U5_ga(x2, x4)
U2_ga(x1, x2, x3)  =  U2_ga(x2, x3)
ordered_in_g(x1)  =  ordered_in_g(x1)
ordered_out_g(x1)  =  ordered_out_g
U7_g(x1, x2, x3, x4)  =  U7_g(x2, x3, x4)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U8_g(x1, x2, x3, x4)  =  U8_g(x4)
ss_out_ga(x1, x2)  =  ss_out_ga(x2)
U7_G(x1, x2, x3, x4)  =  U7_G(x2, x3, x4)
ORDERED_IN_G(x1)  =  ORDERED_IN_G(x1)

We have to consider all (P,R,Pi)-chains
For (infinitary) constructor rewriting [30] we can delete all non-usable rules from R.

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

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

ORDERED_IN_G(.(X, .(Y, Xs))) → U7_G(X, Y, Xs, less_in_gg(X, s(Y)))
U7_G(X, Y, Xs, less_out_gg(X, s(Y))) → ORDERED_IN_G(.(Y, Xs))

The TRS R consists of the following rules:

less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))

The argument filtering Pi contains the following mapping:
.(x1, x2)  =  .(x1, x2)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U7_G(x1, x2, x3, x4)  =  U7_G(x2, x3, x4)
ORDERED_IN_G(x1)  =  ORDERED_IN_G(x1)

We have to consider all (P,R,Pi)-chains
Transforming (infinitary) constructor rewriting Pi-DP problem [30] into ordinary QDP problem [15] by application of Pi.

↳ Prolog
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
              ↳ PiDP
                ↳ UsableRulesProof
                  ↳ PiDP
                    ↳ PiDPToQDPProof
QDP
                        ↳ UsableRulesReductionPairsProof
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP

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

ORDERED_IN_G(.(X, .(Y, Xs))) → U7_G(Y, Xs, less_in_gg(X, s(Y)))
U7_G(Y, Xs, less_out_gg) → ORDERED_IN_G(.(Y, Xs))

The TRS R consists of the following rules:

less_in_gg(0, s(X)) → less_out_gg
less_in_gg(s(X), s(Y)) → U9_gg(less_in_gg(X, Y))
U9_gg(less_out_gg) → less_out_gg

The set Q consists of the following terms:

less_in_gg(x0, x1)
U9_gg(x0)

We have to consider all (P,Q,R)-chains.
By using the usable rules with reduction pair processor [15] with a polynomial ordering [25], all dependency pairs and the corresponding usable rules [17] can be oriented non-strictly. All non-usable rules are removed, and those dependency pairs and usable rules that have been oriented strictly or contain non-usable symbols in their left-hand side are removed as well.

The following dependency pairs can be deleted:

U7_G(Y, Xs, less_out_gg) → ORDERED_IN_G(.(Y, Xs))
The following rules are removed from R:

less_in_gg(0, s(X)) → less_out_gg
Used ordering: POLO with Polynomial interpretation [25]:

POL(.(x1, x2)) = 2·x1 + 2·x2   
POL(0) = 2   
POL(ORDERED_IN_G(x1)) = 2 + x1   
POL(U7_G(x1, x2, x3)) = 2 + 2·x1 + 2·x2 + x3   
POL(U9_gg(x1)) = x1   
POL(less_in_gg(x1, x2)) = x1 + 2·x2   
POL(less_out_gg) = 2   
POL(s(x1)) = x1   



↳ Prolog
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
              ↳ PiDP
                ↳ UsableRulesProof
                  ↳ PiDP
                    ↳ PiDPToQDPProof
                      ↳ QDP
                        ↳ UsableRulesReductionPairsProof
QDP
                            ↳ DependencyGraphProof
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP

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

ORDERED_IN_G(.(X, .(Y, Xs))) → U7_G(Y, Xs, less_in_gg(X, s(Y)))

The TRS R consists of the following rules:

less_in_gg(s(X), s(Y)) → U9_gg(less_in_gg(X, Y))
U9_gg(less_out_gg) → less_out_gg

The set Q consists of the following terms:

less_in_gg(x0, x1)
U9_gg(x0)

We have to consider all (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 0 SCCs with 1 less node.

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

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

APP_IN_GGA(.(X, Xs), Ys, .(X, Zs)) → APP_IN_GGA(Xs, Ys, Zs)

The TRS R consists of the following rules:

ss_in_ga(Xs, Ys) → U1_ga(Xs, Ys, perm_in_ga(Xs, Ys))
perm_in_ga([], []) → perm_out_ga([], [])
perm_in_ga(Xs, .(X, Ys)) → U3_ga(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))
U3_ga(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_ga(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U4_ga(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_ga(Xs, X, Ys, perm_in_ga(Zs, Ys))
U5_ga(Xs, X, Ys, perm_out_ga(Zs, Ys)) → perm_out_ga(Xs, .(X, Ys))
U1_ga(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_ga(Xs, Ys, ordered_in_g(Ys))
ordered_in_g([]) → ordered_out_g([])
ordered_in_g(.(X, [])) → ordered_out_g(.(X, []))
ordered_in_g(.(X, .(Y, Xs))) → U7_g(X, Y, Xs, less_in_gg(X, s(Y)))
less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U7_g(X, Y, Xs, less_out_gg(X, s(Y))) → U8_g(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U8_g(X, Y, Xs, ordered_out_g(.(Y, Xs))) → ordered_out_g(.(X, .(Y, Xs)))
U2_ga(Xs, Ys, ordered_out_g(Ys)) → ss_out_ga(Xs, Ys)

The argument filtering Pi contains the following mapping:
ss_in_ga(x1, x2)  =  ss_in_ga(x1)
U1_ga(x1, x2, x3)  =  U1_ga(x3)
perm_in_ga(x1, x2)  =  perm_in_ga(x1)
[]  =  []
perm_out_ga(x1, x2)  =  perm_out_ga(x2)
U3_ga(x1, x2, x3, x4)  =  U3_ga(x4)
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
U4_ga(x1, x2, x3, x4)  =  U4_ga(x2, x4)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U5_ga(x1, x2, x3, x4)  =  U5_ga(x2, x4)
U2_ga(x1, x2, x3)  =  U2_ga(x2, x3)
ordered_in_g(x1)  =  ordered_in_g(x1)
ordered_out_g(x1)  =  ordered_out_g
U7_g(x1, x2, x3, x4)  =  U7_g(x2, x3, x4)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U8_g(x1, x2, x3, x4)  =  U8_g(x4)
ss_out_ga(x1, x2)  =  ss_out_ga(x2)
APP_IN_GGA(x1, x2, x3)  =  APP_IN_GGA(x1, x2)

We have to consider all (P,R,Pi)-chains
For (infinitary) constructor rewriting [30] we can delete all non-usable rules from R.

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

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

APP_IN_GGA(.(X, Xs), Ys, .(X, Zs)) → APP_IN_GGA(Xs, Ys, Zs)

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

We have to consider all (P,R,Pi)-chains
Transforming (infinitary) constructor rewriting Pi-DP problem [30] into ordinary QDP problem [15] by application of Pi.

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

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

APP_IN_GGA(.(X, Xs), Ys) → APP_IN_GGA(Xs, Ys)

R is empty.
Q is empty.
We have to consider all (P,Q,R)-chains.
By using the subterm criterion [20] together with the size-change analysis [32] 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
              ↳ PiDP
PiDP
                ↳ UsableRulesProof
              ↳ PiDP

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

APP_IN_AAG(.(X, Xs), Ys, .(X, Zs)) → APP_IN_AAG(Xs, Ys, Zs)

The TRS R consists of the following rules:

ss_in_ga(Xs, Ys) → U1_ga(Xs, Ys, perm_in_ga(Xs, Ys))
perm_in_ga([], []) → perm_out_ga([], [])
perm_in_ga(Xs, .(X, Ys)) → U3_ga(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))
U3_ga(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_ga(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U4_ga(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_ga(Xs, X, Ys, perm_in_ga(Zs, Ys))
U5_ga(Xs, X, Ys, perm_out_ga(Zs, Ys)) → perm_out_ga(Xs, .(X, Ys))
U1_ga(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_ga(Xs, Ys, ordered_in_g(Ys))
ordered_in_g([]) → ordered_out_g([])
ordered_in_g(.(X, [])) → ordered_out_g(.(X, []))
ordered_in_g(.(X, .(Y, Xs))) → U7_g(X, Y, Xs, less_in_gg(X, s(Y)))
less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U7_g(X, Y, Xs, less_out_gg(X, s(Y))) → U8_g(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U8_g(X, Y, Xs, ordered_out_g(.(Y, Xs))) → ordered_out_g(.(X, .(Y, Xs)))
U2_ga(Xs, Ys, ordered_out_g(Ys)) → ss_out_ga(Xs, Ys)

The argument filtering Pi contains the following mapping:
ss_in_ga(x1, x2)  =  ss_in_ga(x1)
U1_ga(x1, x2, x3)  =  U1_ga(x3)
perm_in_ga(x1, x2)  =  perm_in_ga(x1)
[]  =  []
perm_out_ga(x1, x2)  =  perm_out_ga(x2)
U3_ga(x1, x2, x3, x4)  =  U3_ga(x4)
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
U4_ga(x1, x2, x3, x4)  =  U4_ga(x2, x4)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U5_ga(x1, x2, x3, x4)  =  U5_ga(x2, x4)
U2_ga(x1, x2, x3)  =  U2_ga(x2, x3)
ordered_in_g(x1)  =  ordered_in_g(x1)
ordered_out_g(x1)  =  ordered_out_g
U7_g(x1, x2, x3, x4)  =  U7_g(x2, x3, x4)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U8_g(x1, x2, x3, x4)  =  U8_g(x4)
ss_out_ga(x1, x2)  =  ss_out_ga(x2)
APP_IN_AAG(x1, x2, x3)  =  APP_IN_AAG(x3)

We have to consider all (P,R,Pi)-chains
For (infinitary) constructor rewriting [30] we can delete all non-usable rules from R.

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

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

APP_IN_AAG(.(X, Xs), Ys, .(X, Zs)) → APP_IN_AAG(Xs, Ys, Zs)

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

We have to consider all (P,R,Pi)-chains
Transforming (infinitary) constructor rewriting Pi-DP problem [30] into ordinary QDP problem [15] by application of Pi.

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

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

APP_IN_AAG(.(X, Zs)) → APP_IN_AAG(Zs)

R is empty.
Q is empty.
We have to consider all (P,Q,R)-chains.
By using the subterm criterion [20] together with the size-change analysis [32] 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
              ↳ PiDP
              ↳ PiDP
PiDP
                ↳ UsableRulesProof

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

U3_GA(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_GA(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
PERM_IN_GA(Xs, .(X, Ys)) → U3_GA(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
U4_GA(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → PERM_IN_GA(Zs, Ys)

The TRS R consists of the following rules:

ss_in_ga(Xs, Ys) → U1_ga(Xs, Ys, perm_in_ga(Xs, Ys))
perm_in_ga([], []) → perm_out_ga([], [])
perm_in_ga(Xs, .(X, Ys)) → U3_ga(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))
U3_ga(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_ga(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U4_ga(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → U5_ga(Xs, X, Ys, perm_in_ga(Zs, Ys))
U5_ga(Xs, X, Ys, perm_out_ga(Zs, Ys)) → perm_out_ga(Xs, .(X, Ys))
U1_ga(Xs, Ys, perm_out_ga(Xs, Ys)) → U2_ga(Xs, Ys, ordered_in_g(Ys))
ordered_in_g([]) → ordered_out_g([])
ordered_in_g(.(X, [])) → ordered_out_g(.(X, []))
ordered_in_g(.(X, .(Y, Xs))) → U7_g(X, Y, Xs, less_in_gg(X, s(Y)))
less_in_gg(0, s(X)) → less_out_gg(0, s(X))
less_in_gg(s(X), s(Y)) → U9_gg(X, Y, less_in_gg(X, Y))
U9_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U7_g(X, Y, Xs, less_out_gg(X, s(Y))) → U8_g(X, Y, Xs, ordered_in_g(.(Y, Xs)))
U8_g(X, Y, Xs, ordered_out_g(.(Y, Xs))) → ordered_out_g(.(X, .(Y, Xs)))
U2_ga(Xs, Ys, ordered_out_g(Ys)) → ss_out_ga(Xs, Ys)

The argument filtering Pi contains the following mapping:
ss_in_ga(x1, x2)  =  ss_in_ga(x1)
U1_ga(x1, x2, x3)  =  U1_ga(x3)
perm_in_ga(x1, x2)  =  perm_in_ga(x1)
[]  =  []
perm_out_ga(x1, x2)  =  perm_out_ga(x2)
U3_ga(x1, x2, x3, x4)  =  U3_ga(x4)
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
U4_ga(x1, x2, x3, x4)  =  U4_ga(x2, x4)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U5_ga(x1, x2, x3, x4)  =  U5_ga(x2, x4)
U2_ga(x1, x2, x3)  =  U2_ga(x2, x3)
ordered_in_g(x1)  =  ordered_in_g(x1)
ordered_out_g(x1)  =  ordered_out_g
U7_g(x1, x2, x3, x4)  =  U7_g(x2, x3, x4)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
s(x1)  =  s(x1)
less_out_gg(x1, x2)  =  less_out_gg
U9_gg(x1, x2, x3)  =  U9_gg(x3)
U8_g(x1, x2, x3, x4)  =  U8_g(x4)
ss_out_ga(x1, x2)  =  ss_out_ga(x2)
U3_GA(x1, x2, x3, x4)  =  U3_GA(x4)
U4_GA(x1, x2, x3, x4)  =  U4_GA(x2, x4)
PERM_IN_GA(x1, x2)  =  PERM_IN_GA(x1)

We have to consider all (P,R,Pi)-chains
For (infinitary) constructor rewriting [30] we can delete all non-usable rules from R.

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

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

U3_GA(Xs, X, Ys, app_out_aag(X1s, .(X, X2s), Xs)) → U4_GA(Xs, X, Ys, app_in_gga(X1s, X2s, Zs))
PERM_IN_GA(Xs, .(X, Ys)) → U3_GA(Xs, X, Ys, app_in_aag(X1s, .(X, X2s), Xs))
U4_GA(Xs, X, Ys, app_out_gga(X1s, X2s, Zs)) → PERM_IN_GA(Zs, Ys)

The TRS R consists of the following rules:

app_in_gga([], X, X) → app_out_gga([], X, X)
app_in_gga(.(X, Xs), Ys, .(X, Zs)) → U6_gga(X, Xs, Ys, Zs, app_in_gga(Xs, Ys, Zs))
app_in_aag([], X, X) → app_out_aag([], X, X)
app_in_aag(.(X, Xs), Ys, .(X, Zs)) → U6_aag(X, Xs, Ys, Zs, app_in_aag(Xs, Ys, Zs))
U6_gga(X, Xs, Ys, Zs, app_out_gga(Xs, Ys, Zs)) → app_out_gga(.(X, Xs), Ys, .(X, Zs))
U6_aag(X, Xs, Ys, Zs, app_out_aag(Xs, Ys, Zs)) → app_out_aag(.(X, Xs), Ys, .(X, Zs))

The argument filtering Pi contains the following mapping:
[]  =  []
app_in_aag(x1, x2, x3)  =  app_in_aag(x3)
app_out_aag(x1, x2, x3)  =  app_out_aag(x1, x2)
.(x1, x2)  =  .(x1, x2)
U6_aag(x1, x2, x3, x4, x5)  =  U6_aag(x1, x5)
app_in_gga(x1, x2, x3)  =  app_in_gga(x1, x2)
app_out_gga(x1, x2, x3)  =  app_out_gga(x3)
U6_gga(x1, x2, x3, x4, x5)  =  U6_gga(x1, x5)
U3_GA(x1, x2, x3, x4)  =  U3_GA(x4)
U4_GA(x1, x2, x3, x4)  =  U4_GA(x2, x4)
PERM_IN_GA(x1, x2)  =  PERM_IN_GA(x1)

We have to consider all (P,R,Pi)-chains
Transforming (infinitary) constructor rewriting Pi-DP problem [30] into ordinary QDP problem [15] by application of Pi.

↳ Prolog
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP
                ↳ UsableRulesProof
                  ↳ PiDP
                    ↳ PiDPToQDPProof
QDP
                        ↳ RuleRemovalProof

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

U4_GA(X, app_out_gga(Zs)) → PERM_IN_GA(Zs)
PERM_IN_GA(Xs) → U3_GA(app_in_aag(Xs))
U3_GA(app_out_aag(X1s, .(X, X2s))) → U4_GA(X, app_in_gga(X1s, X2s))

The TRS R consists of the following rules:

app_in_gga([], X) → app_out_gga(X)
app_in_gga(.(X, Xs), Ys) → U6_gga(X, app_in_gga(Xs, Ys))
app_in_aag(X) → app_out_aag([], X)
app_in_aag(.(X, Zs)) → U6_aag(X, app_in_aag(Zs))
U6_gga(X, app_out_gga(Zs)) → app_out_gga(.(X, Zs))
U6_aag(X, app_out_aag(Xs, Ys)) → app_out_aag(.(X, Xs), Ys)

The set Q consists of the following terms:

app_in_gga(x0, x1)
app_in_aag(x0)
U6_gga(x0, x1)
U6_aag(x0, x1)

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

Strictly oriented rules of the TRS R:

app_in_gga([], X) → app_out_gga(X)

Used ordering: POLO with Polynomial interpretation [25]:

POL(.(x1, x2)) = 2 + 2·x1 + x2   
POL(PERM_IN_GA(x1)) = 2·x1   
POL(U3_GA(x1)) = 2·x1   
POL(U4_GA(x1, x2)) = x1 + 2·x2   
POL(U6_aag(x1, x2)) = 2 + 2·x1 + x2   
POL(U6_gga(x1, x2)) = 2 + 2·x1 + x2   
POL([]) = 0   
POL(app_in_aag(x1)) = x1   
POL(app_in_gga(x1, x2)) = 2 + x1 + x2   
POL(app_out_aag(x1, x2)) = x1 + x2   
POL(app_out_gga(x1)) = x1   



↳ Prolog
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP
                ↳ UsableRulesProof
                  ↳ PiDP
                    ↳ PiDPToQDPProof
                      ↳ QDP
                        ↳ RuleRemovalProof
QDP
                            ↳ RuleRemovalProof

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

U4_GA(X, app_out_gga(Zs)) → PERM_IN_GA(Zs)
PERM_IN_GA(Xs) → U3_GA(app_in_aag(Xs))
U3_GA(app_out_aag(X1s, .(X, X2s))) → U4_GA(X, app_in_gga(X1s, X2s))

The TRS R consists of the following rules:

app_in_gga(.(X, Xs), Ys) → U6_gga(X, app_in_gga(Xs, Ys))
app_in_aag(X) → app_out_aag([], X)
app_in_aag(.(X, Zs)) → U6_aag(X, app_in_aag(Zs))
U6_gga(X, app_out_gga(Zs)) → app_out_gga(.(X, Zs))
U6_aag(X, app_out_aag(Xs, Ys)) → app_out_aag(.(X, Xs), Ys)

The set Q consists of the following terms:

app_in_gga(x0, x1)
app_in_aag(x0)
U6_gga(x0, x1)
U6_aag(x0, x1)

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

PERM_IN_GA(Xs) → U3_GA(app_in_aag(Xs))


Used ordering: POLO with Polynomial interpretation [25]:

POL(.(x1, x2)) = x1 + x2   
POL(PERM_IN_GA(x1)) = 2 + 2·x1   
POL(U3_GA(x1)) = x1   
POL(U4_GA(x1, x2)) = x1 + x2   
POL(U6_aag(x1, x2)) = 2·x1 + x2   
POL(U6_gga(x1, x2)) = 2·x1 + x2   
POL([]) = 0   
POL(app_in_aag(x1)) = 2·x1   
POL(app_in_gga(x1, x2)) = 2·x1 + x2   
POL(app_out_aag(x1, x2)) = 2·x1 + x2   
POL(app_out_gga(x1)) = 2 + 2·x1   



↳ Prolog
  ↳ PrologToPiTRSProof
    ↳ PiTRS
      ↳ DependencyPairsProof
        ↳ PiDP
          ↳ DependencyGraphProof
            ↳ AND
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP
              ↳ PiDP
                ↳ UsableRulesProof
                  ↳ PiDP
                    ↳ PiDPToQDPProof
                      ↳ QDP
                        ↳ RuleRemovalProof
                          ↳ QDP
                            ↳ RuleRemovalProof
QDP
                                ↳ DependencyGraphProof

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

U4_GA(X, app_out_gga(Zs)) → PERM_IN_GA(Zs)
U3_GA(app_out_aag(X1s, .(X, X2s))) → U4_GA(X, app_in_gga(X1s, X2s))

The TRS R consists of the following rules:

app_in_gga(.(X, Xs), Ys) → U6_gga(X, app_in_gga(Xs, Ys))
app_in_aag(X) → app_out_aag([], X)
app_in_aag(.(X, Zs)) → U6_aag(X, app_in_aag(Zs))
U6_gga(X, app_out_gga(Zs)) → app_out_gga(.(X, Zs))
U6_aag(X, app_out_aag(Xs, Ys)) → app_out_aag(.(X, Xs), Ys)

The set Q consists of the following terms:

app_in_gga(x0, x1)
app_in_aag(x0)
U6_gga(x0, x1)
U6_aag(x0, x1)

We have to consider all (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 0 SCCs with 2 less nodes.