Left Termination of the query pattern insert_in_3(a, g, a) w.r.t. the given Prolog program could successfully be proven:

(0) Obligation:

Clauses:

insert(X, void, tree(X, void, void)).
insert(X, tree(X, Left, Right), tree(X, Left, Right)).
insert(X, tree(Y, Left, Right), tree(Y, Left1, Right)) :- ','(less(X, Y), insert(X, Left, Left1)).
insert(X, tree(Y, Left, Right), tree(Y, Left, Right1)) :- ','(less(Y, X), insert(X, Right, Right1)).
less(0, s(X1)).
less(s(X), s(Y)) :- less(X, Y).

Queries:

insert(a,g,a).

(1) PrologToPiTRSProof (SOUND transformation)

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

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x3, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1)
U5_ag(x1, x2, x3)  =  U5_ag(x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x2, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x2, x3, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x6)

Infinitary Constructor Rewriting Termination of PiTRS implies Termination of Prolog

(2) Obligation:

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

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x3, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1)
U5_ag(x1, x2, x3)  =  U5_ag(x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x2, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x2, x3, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x6)

(3) DependencyPairsProof (EQUIVALENT transformation)

Using Dependency Pairs [AG00,LOPSTR] we result in the following initial DP problem:
Pi DP problem:
The TRS P consists of the following rules:

INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_AGA(X, Y, Left, Right, Left1, less_in_ag(X, Y))
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → LESS_IN_AG(X, Y)
LESS_IN_AG(s(X), s(Y)) → U5_AG(X, Y, less_in_ag(X, Y))
LESS_IN_AG(s(X), s(Y)) → LESS_IN_AG(X, Y)
U1_AGA(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_AGA(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
U1_AGA(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_GGA(X, Y, Left, Right, Left1, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → LESS_IN_GG(X, Y)
LESS_IN_GG(s(X), s(Y)) → U5_GG(X, Y, less_in_gg(X, Y))
LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)
U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_GGA(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_GGA(X, Y, Left, Right, Right1, less_in_gg(Y, X))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → LESS_IN_GG(Y, X)
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_GGA(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right, Right1)
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_AGA(X, Y, Left, Right, Right1, less_in_ga(Y, X))
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → LESS_IN_GA(Y, X)
LESS_IN_GA(s(X), s(Y)) → U5_GA(X, Y, less_in_ga(X, Y))
LESS_IN_GA(s(X), s(Y)) → LESS_IN_GA(X, Y)
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_AGA(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → INSERT_IN_AGA(X, Right, Right1)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x3, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1)
U5_ag(x1, x2, x3)  =  U5_ag(x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x2, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x2, x3, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x6)
INSERT_IN_AGA(x1, x2, x3)  =  INSERT_IN_AGA(x2)
U1_AGA(x1, x2, x3, x4, x5, x6)  =  U1_AGA(x3, x6)
LESS_IN_AG(x1, x2)  =  LESS_IN_AG(x2)
U5_AG(x1, x2, x3)  =  U5_AG(x3)
U2_AGA(x1, x2, x3, x4, x5, x6)  =  U2_AGA(x6)
INSERT_IN_GGA(x1, x2, x3)  =  INSERT_IN_GGA(x1, x2)
U1_GGA(x1, x2, x3, x4, x5, x6)  =  U1_GGA(x1, x2, x3, x4, x6)
LESS_IN_GG(x1, x2)  =  LESS_IN_GG(x1, x2)
U5_GG(x1, x2, x3)  =  U5_GG(x3)
U2_GGA(x1, x2, x3, x4, x5, x6)  =  U2_GGA(x2, x4, x6)
U3_GGA(x1, x2, x3, x4, x5, x6)  =  U3_GGA(x1, x2, x3, x4, x6)
U4_GGA(x1, x2, x3, x4, x5, x6)  =  U4_GGA(x2, x3, x6)
U3_AGA(x1, x2, x3, x4, x5, x6)  =  U3_AGA(x4, x6)
LESS_IN_GA(x1, x2)  =  LESS_IN_GA(x1)
U5_GA(x1, x2, x3)  =  U5_GA(x3)
U4_AGA(x1, x2, x3, x4, x5, x6)  =  U4_AGA(x6)

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

(4) Obligation:

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

INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_AGA(X, Y, Left, Right, Left1, less_in_ag(X, Y))
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → LESS_IN_AG(X, Y)
LESS_IN_AG(s(X), s(Y)) → U5_AG(X, Y, less_in_ag(X, Y))
LESS_IN_AG(s(X), s(Y)) → LESS_IN_AG(X, Y)
U1_AGA(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_AGA(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
U1_AGA(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_GGA(X, Y, Left, Right, Left1, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → LESS_IN_GG(X, Y)
LESS_IN_GG(s(X), s(Y)) → U5_GG(X, Y, less_in_gg(X, Y))
LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)
U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_GGA(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_GGA(X, Y, Left, Right, Right1, less_in_gg(Y, X))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → LESS_IN_GG(Y, X)
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_GGA(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right, Right1)
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_AGA(X, Y, Left, Right, Right1, less_in_ga(Y, X))
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → LESS_IN_GA(Y, X)
LESS_IN_GA(s(X), s(Y)) → U5_GA(X, Y, less_in_ga(X, Y))
LESS_IN_GA(s(X), s(Y)) → LESS_IN_GA(X, Y)
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_AGA(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → INSERT_IN_AGA(X, Right, Right1)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x3, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1)
U5_ag(x1, x2, x3)  =  U5_ag(x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x2, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x2, x3, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x6)
INSERT_IN_AGA(x1, x2, x3)  =  INSERT_IN_AGA(x2)
U1_AGA(x1, x2, x3, x4, x5, x6)  =  U1_AGA(x3, x6)
LESS_IN_AG(x1, x2)  =  LESS_IN_AG(x2)
U5_AG(x1, x2, x3)  =  U5_AG(x3)
U2_AGA(x1, x2, x3, x4, x5, x6)  =  U2_AGA(x6)
INSERT_IN_GGA(x1, x2, x3)  =  INSERT_IN_GGA(x1, x2)
U1_GGA(x1, x2, x3, x4, x5, x6)  =  U1_GGA(x1, x2, x3, x4, x6)
LESS_IN_GG(x1, x2)  =  LESS_IN_GG(x1, x2)
U5_GG(x1, x2, x3)  =  U5_GG(x3)
U2_GGA(x1, x2, x3, x4, x5, x6)  =  U2_GGA(x2, x4, x6)
U3_GGA(x1, x2, x3, x4, x5, x6)  =  U3_GGA(x1, x2, x3, x4, x6)
U4_GGA(x1, x2, x3, x4, x5, x6)  =  U4_GGA(x2, x3, x6)
U3_AGA(x1, x2, x3, x4, x5, x6)  =  U3_AGA(x4, x6)
LESS_IN_GA(x1, x2)  =  LESS_IN_GA(x1)
U5_GA(x1, x2, x3)  =  U5_GA(x3)
U4_AGA(x1, x2, x3, x4, x5, x6)  =  U4_AGA(x6)

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

(5) DependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LOPSTR] contains 5 SCCs with 13 less nodes.

(6) Complex Obligation (AND)

(7) Obligation:

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

LESS_IN_GA(s(X), s(Y)) → LESS_IN_GA(X, Y)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x3, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1)
U5_ag(x1, x2, x3)  =  U5_ag(x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x2, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x2, x3, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x6)
LESS_IN_GA(x1, x2)  =  LESS_IN_GA(x1)

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

(8) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(9) Obligation:

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

LESS_IN_GA(s(X), s(Y)) → LESS_IN_GA(X, Y)

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

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

(10) PiDPToQDPProof (SOUND transformation)

Transforming (infinitary) constructor rewriting Pi-DP problem [LOPSTR] into ordinary QDP problem [LPAR04] by application of Pi.

(11) Obligation:

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

LESS_IN_GA(s(X)) → LESS_IN_GA(X)

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

(12) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

• LESS_IN_GA(s(X)) → LESS_IN_GA(X)
  The graph contains the following edges 1 > 1

(13) TRUE

(14) Obligation:

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:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x3, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1)
U5_ag(x1, x2, x3)  =  U5_ag(x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x2, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x2, x3, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x6)
LESS_IN_GG(x1, x2)  =  LESS_IN_GG(x1, x2)

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

(15) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(16) Obligation:

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

(17) PiDPToQDPProof (EQUIVALENT transformation)

Transforming (infinitary) constructor rewriting Pi-DP problem [LOPSTR] into ordinary QDP problem [LPAR04] by application of Pi.

(18) Obligation:

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.

(19) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

• LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)
  The graph contains the following edges 1 > 1, 2 > 2

(20) TRUE

(21) Obligation:

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

U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_GGA(X, Y, Left, Right, Left1, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_GGA(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right, Right1)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x3, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1)
U5_ag(x1, x2, x3)  =  U5_ag(x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x2, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x2, x3, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x6)
INSERT_IN_GGA(x1, x2, x3)  =  INSERT_IN_GGA(x1, x2)
U1_GGA(x1, x2, x3, x4, x5, x6)  =  U1_GGA(x1, x2, x3, x4, x6)
U3_GGA(x1, x2, x3, x4, x5, x6)  =  U3_GGA(x1, x2, x3, x4, x6)

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

(22) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(23) Obligation:

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

U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_GGA(X, Y, Left, Right, Left1, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_GGA(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right, Right1)

The TRS R consists of the following rules:

less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))

The argument filtering Pi contains the following mapping:
tree(x1, x2, x3)  =  tree(x1, x2, x3)
s(x1)  =  s(x1)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
INSERT_IN_GGA(x1, x2, x3)  =  INSERT_IN_GGA(x1, x2)
U1_GGA(x1, x2, x3, x4, x5, x6)  =  U1_GGA(x1, x2, x3, x4, x6)
U3_GGA(x1, x2, x3, x4, x5, x6)  =  U3_GGA(x1, x2, x3, x4, x6)

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

(24) PiDPToQDPProof (SOUND transformation)

Transforming (infinitary) constructor rewriting Pi-DP problem [LOPSTR] into ordinary QDP problem [LPAR04] by application of Pi.

(25) Obligation:

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

U1_GGA(X, Y, Left, Right, less_out_gg) → INSERT_IN_GGA(X, Left)
INSERT_IN_GGA(X, tree(Y, Left, Right)) → U1_GGA(X, Y, Left, Right, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right)) → U3_GGA(X, Y, Left, Right, less_in_gg(Y, X))
U3_GGA(X, Y, Left, Right, less_out_gg) → INSERT_IN_GGA(X, Right)

The TRS R consists of the following rules:

less_in_gg(0, s(X1)) → less_out_gg
less_in_gg(s(X), s(Y)) → U5_gg(less_in_gg(X, Y))
U5_gg(less_out_gg) → less_out_gg

The set Q consists of the following terms:

less_in_gg(x0, x1)
U5_gg(x0)

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

(26) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

• INSERT_IN_GGA(X, tree(Y, Left, Right)) → U1_GGA(X, Y, Left, Right, less_in_gg(X, Y))
  The graph contains the following edges 1 >= 1, 2 > 2, 2 > 3, 2 > 4

• INSERT_IN_GGA(X, tree(Y, Left, Right)) → U3_GGA(X, Y, Left, Right, less_in_gg(Y, X))
  The graph contains the following edges 1 >= 1, 2 > 2, 2 > 3, 2 > 4

• U1_GGA(X, Y, Left, Right, less_out_gg) → INSERT_IN_GGA(X, Left)
  The graph contains the following edges 1 >= 1, 3 >= 2

• U3_GGA(X, Y, Left, Right, less_out_gg) → INSERT_IN_GGA(X, Right)
  The graph contains the following edges 1 >= 1, 4 >= 2

(27) TRUE

(28) Obligation:

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

LESS_IN_AG(s(X), s(Y)) → LESS_IN_AG(X, Y)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x3, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1)
U5_ag(x1, x2, x3)  =  U5_ag(x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x2, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x2, x3, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x6)
LESS_IN_AG(x1, x2)  =  LESS_IN_AG(x2)

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

(29) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(30) Obligation:

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

LESS_IN_AG(s(X), s(Y)) → LESS_IN_AG(X, Y)

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

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

(31) PiDPToQDPProof (SOUND transformation)

Transforming (infinitary) constructor rewriting Pi-DP problem [LOPSTR] into ordinary QDP problem [LPAR04] by application of Pi.

(32) Obligation:

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

LESS_IN_AG(s(Y)) → LESS_IN_AG(Y)

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

(33) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

• LESS_IN_AG(s(Y)) → LESS_IN_AG(Y)
  The graph contains the following edges 1 > 1

(34) TRUE

(35) Obligation:

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

INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_AGA(X, Y, Left, Right, Right1, less_in_ga(Y, X))
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → INSERT_IN_AGA(X, Right, Right1)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x3, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1)
U5_ag(x1, x2, x3)  =  U5_ag(x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg
U5_gg(x1, x2, x3)  =  U5_gg(x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x2, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x2, x3, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x6)
INSERT_IN_AGA(x1, x2, x3)  =  INSERT_IN_AGA(x2)
U3_AGA(x1, x2, x3, x4, x5, x6)  =  U3_AGA(x4, x6)

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

(36) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(37) Obligation:

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

INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_AGA(X, Y, Left, Right, Right1, less_in_ga(Y, X))
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → INSERT_IN_AGA(X, Right, Right1)

The TRS R consists of the following rules:

less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))

The argument filtering Pi contains the following mapping:
tree(x1, x2, x3)  =  tree(x1, x2, x3)
s(x1)  =  s(x1)
0  =  0
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga
U5_ga(x1, x2, x3)  =  U5_ga(x3)
INSERT_IN_AGA(x1, x2, x3)  =  INSERT_IN_AGA(x2)
U3_AGA(x1, x2, x3, x4, x5, x6)  =  U3_AGA(x4, x6)

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

(38) PiDPToQDPProof (SOUND transformation)

Transforming (infinitary) constructor rewriting Pi-DP problem [LOPSTR] into ordinary QDP problem [LPAR04] by application of Pi.

(39) Obligation:

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

INSERT_IN_AGA(tree(Y, Left, Right)) → U3_AGA(Right, less_in_ga(Y))
U3_AGA(Right, less_out_ga) → INSERT_IN_AGA(Right)

The TRS R consists of the following rules:

less_in_ga(0) → less_out_ga
less_in_ga(s(X)) → U5_ga(less_in_ga(X))
U5_ga(less_out_ga) → less_out_ga

The set Q consists of the following terms:

less_in_ga(x0)
U5_ga(x0)

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

(40) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

• U3_AGA(Right, less_out_ga) → INSERT_IN_AGA(Right)
  The graph contains the following edges 1 >= 1

• INSERT_IN_AGA(tree(Y, Left, Right)) → U3_AGA(Right, less_in_ga(Y))
  The graph contains the following edges 1 > 1

(41) TRUE

(42) PrologToPiTRSProof (SOUND transformation)

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

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga(x2)
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x2, x3, x4, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1, x2)
U5_ag(x1, x2, x3)  =  U5_ag(x2, x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x2, x3, x4, x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x1, x2, x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x1, x2, x3, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x1, x2, x3, x4, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x2, x3, x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x2, x3, x4, x6)

Infinitary Constructor Rewriting Termination of PiTRS implies Termination of Prolog

(43) Obligation:

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

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga(x2)
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x2, x3, x4, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1, x2)
U5_ag(x1, x2, x3)  =  U5_ag(x2, x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x2, x3, x4, x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x1, x2, x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x1, x2, x3, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x1, x2, x3, x4, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x2, x3, x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x2, x3, x4, x6)

(44) DependencyPairsProof (EQUIVALENT transformation)

Using Dependency Pairs [AG00,LOPSTR] we result in the following initial DP problem:
Pi DP problem:
The TRS P consists of the following rules:

INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_AGA(X, Y, Left, Right, Left1, less_in_ag(X, Y))
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → LESS_IN_AG(X, Y)
LESS_IN_AG(s(X), s(Y)) → U5_AG(X, Y, less_in_ag(X, Y))
LESS_IN_AG(s(X), s(Y)) → LESS_IN_AG(X, Y)
U1_AGA(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_AGA(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
U1_AGA(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_GGA(X, Y, Left, Right, Left1, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → LESS_IN_GG(X, Y)
LESS_IN_GG(s(X), s(Y)) → U5_GG(X, Y, less_in_gg(X, Y))
LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)
U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_GGA(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_GGA(X, Y, Left, Right, Right1, less_in_gg(Y, X))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → LESS_IN_GG(Y, X)
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_GGA(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right, Right1)
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_AGA(X, Y, Left, Right, Right1, less_in_ga(Y, X))
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → LESS_IN_GA(Y, X)
LESS_IN_GA(s(X), s(Y)) → U5_GA(X, Y, less_in_ga(X, Y))
LESS_IN_GA(s(X), s(Y)) → LESS_IN_GA(X, Y)
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_AGA(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → INSERT_IN_AGA(X, Right, Right1)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga(x2)
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x2, x3, x4, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1, x2)
U5_ag(x1, x2, x3)  =  U5_ag(x2, x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x2, x3, x4, x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x1, x2, x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x1, x2, x3, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x1, x2, x3, x4, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x2, x3, x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x2, x3, x4, x6)
INSERT_IN_AGA(x1, x2, x3)  =  INSERT_IN_AGA(x2)
U1_AGA(x1, x2, x3, x4, x5, x6)  =  U1_AGA(x2, x3, x4, x6)
LESS_IN_AG(x1, x2)  =  LESS_IN_AG(x2)
U5_AG(x1, x2, x3)  =  U5_AG(x2, x3)
U2_AGA(x1, x2, x3, x4, x5, x6)  =  U2_AGA(x2, x3, x4, x6)
INSERT_IN_GGA(x1, x2, x3)  =  INSERT_IN_GGA(x1, x2)
U1_GGA(x1, x2, x3, x4, x5, x6)  =  U1_GGA(x1, x2, x3, x4, x6)
LESS_IN_GG(x1, x2)  =  LESS_IN_GG(x1, x2)
U5_GG(x1, x2, x3)  =  U5_GG(x1, x2, x3)
U2_GGA(x1, x2, x3, x4, x5, x6)  =  U2_GGA(x1, x2, x3, x4, x6)
U3_GGA(x1, x2, x3, x4, x5, x6)  =  U3_GGA(x1, x2, x3, x4, x6)
U4_GGA(x1, x2, x3, x4, x5, x6)  =  U4_GGA(x1, x2, x3, x4, x6)
U3_AGA(x1, x2, x3, x4, x5, x6)  =  U3_AGA(x2, x3, x4, x6)
LESS_IN_GA(x1, x2)  =  LESS_IN_GA(x1)
U5_GA(x1, x2, x3)  =  U5_GA(x1, x3)
U4_AGA(x1, x2, x3, x4, x5, x6)  =  U4_AGA(x2, x3, x4, x6)

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

(45) Obligation:

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

INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_AGA(X, Y, Left, Right, Left1, less_in_ag(X, Y))
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → LESS_IN_AG(X, Y)
LESS_IN_AG(s(X), s(Y)) → U5_AG(X, Y, less_in_ag(X, Y))
LESS_IN_AG(s(X), s(Y)) → LESS_IN_AG(X, Y)
U1_AGA(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_AGA(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
U1_AGA(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_GGA(X, Y, Left, Right, Left1, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → LESS_IN_GG(X, Y)
LESS_IN_GG(s(X), s(Y)) → U5_GG(X, Y, less_in_gg(X, Y))
LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)
U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_GGA(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_GGA(X, Y, Left, Right, Right1, less_in_gg(Y, X))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → LESS_IN_GG(Y, X)
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_GGA(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right, Right1)
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_AGA(X, Y, Left, Right, Right1, less_in_ga(Y, X))
INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → LESS_IN_GA(Y, X)
LESS_IN_GA(s(X), s(Y)) → U5_GA(X, Y, less_in_ga(X, Y))
LESS_IN_GA(s(X), s(Y)) → LESS_IN_GA(X, Y)
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_AGA(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → INSERT_IN_AGA(X, Right, Right1)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga(x2)
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x2, x3, x4, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1, x2)
U5_ag(x1, x2, x3)  =  U5_ag(x2, x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x2, x3, x4, x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x1, x2, x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x1, x2, x3, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x1, x2, x3, x4, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x2, x3, x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x2, x3, x4, x6)
INSERT_IN_AGA(x1, x2, x3)  =  INSERT_IN_AGA(x2)
U1_AGA(x1, x2, x3, x4, x5, x6)  =  U1_AGA(x2, x3, x4, x6)
LESS_IN_AG(x1, x2)  =  LESS_IN_AG(x2)
U5_AG(x1, x2, x3)  =  U5_AG(x2, x3)
U2_AGA(x1, x2, x3, x4, x5, x6)  =  U2_AGA(x2, x3, x4, x6)
INSERT_IN_GGA(x1, x2, x3)  =  INSERT_IN_GGA(x1, x2)
U1_GGA(x1, x2, x3, x4, x5, x6)  =  U1_GGA(x1, x2, x3, x4, x6)
LESS_IN_GG(x1, x2)  =  LESS_IN_GG(x1, x2)
U5_GG(x1, x2, x3)  =  U5_GG(x1, x2, x3)
U2_GGA(x1, x2, x3, x4, x5, x6)  =  U2_GGA(x1, x2, x3, x4, x6)
U3_GGA(x1, x2, x3, x4, x5, x6)  =  U3_GGA(x1, x2, x3, x4, x6)
U4_GGA(x1, x2, x3, x4, x5, x6)  =  U4_GGA(x1, x2, x3, x4, x6)
U3_AGA(x1, x2, x3, x4, x5, x6)  =  U3_AGA(x2, x3, x4, x6)
LESS_IN_GA(x1, x2)  =  LESS_IN_GA(x1)
U5_GA(x1, x2, x3)  =  U5_GA(x1, x3)
U4_AGA(x1, x2, x3, x4, x5, x6)  =  U4_AGA(x2, x3, x4, x6)

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

(46) DependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LOPSTR] contains 5 SCCs with 13 less nodes.

(47) Complex Obligation (AND)

(48) Obligation:

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

LESS_IN_GA(s(X), s(Y)) → LESS_IN_GA(X, Y)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga(x2)
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x2, x3, x4, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1, x2)
U5_ag(x1, x2, x3)  =  U5_ag(x2, x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x2, x3, x4, x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x1, x2, x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x1, x2, x3, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x1, x2, x3, x4, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x2, x3, x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x2, x3, x4, x6)
LESS_IN_GA(x1, x2)  =  LESS_IN_GA(x1)

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

(49) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(50) Obligation:

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

LESS_IN_GA(s(X), s(Y)) → LESS_IN_GA(X, Y)

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

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

(51) PiDPToQDPProof (SOUND transformation)

Transforming (infinitary) constructor rewriting Pi-DP problem [LOPSTR] into ordinary QDP problem [LPAR04] by application of Pi.

(52) Obligation:

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

LESS_IN_GA(s(X)) → LESS_IN_GA(X)

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

(53) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

• LESS_IN_GA(s(X)) → LESS_IN_GA(X)
  The graph contains the following edges 1 > 1

(54) TRUE

(55) Obligation:

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:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga(x2)
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x2, x3, x4, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1, x2)
U5_ag(x1, x2, x3)  =  U5_ag(x2, x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x2, x3, x4, x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x1, x2, x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x1, x2, x3, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x1, x2, x3, x4, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x2, x3, x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x2, x3, x4, x6)
LESS_IN_GG(x1, x2)  =  LESS_IN_GG(x1, x2)

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

(56) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(57) Obligation:

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

(58) PiDPToQDPProof (EQUIVALENT transformation)

Transforming (infinitary) constructor rewriting Pi-DP problem [LOPSTR] into ordinary QDP problem [LPAR04] by application of Pi.

(59) Obligation:

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.

(60) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

• LESS_IN_GG(s(X), s(Y)) → LESS_IN_GG(X, Y)
  The graph contains the following edges 1 > 1, 2 > 2

(61) TRUE

(62) Obligation:

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

U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_GGA(X, Y, Left, Right, Left1, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_GGA(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right, Right1)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga(x2)
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x2, x3, x4, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1, x2)
U5_ag(x1, x2, x3)  =  U5_ag(x2, x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x2, x3, x4, x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x1, x2, x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x1, x2, x3, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x1, x2, x3, x4, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x2, x3, x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x2, x3, x4, x6)
INSERT_IN_GGA(x1, x2, x3)  =  INSERT_IN_GGA(x1, x2)
U1_GGA(x1, x2, x3, x4, x5, x6)  =  U1_GGA(x1, x2, x3, x4, x6)
U3_GGA(x1, x2, x3, x4, x5, x6)  =  U3_GGA(x1, x2, x3, x4, x6)

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

(63) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(64) Obligation:

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

U1_GGA(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left, Left1)
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_GGA(X, Y, Left, Right, Left1, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_GGA(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_GGA(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right, Right1)

The TRS R consists of the following rules:

less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))

The argument filtering Pi contains the following mapping:
tree(x1, x2, x3)  =  tree(x1, x2, x3)
s(x1)  =  s(x1)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
INSERT_IN_GGA(x1, x2, x3)  =  INSERT_IN_GGA(x1, x2)
U1_GGA(x1, x2, x3, x4, x5, x6)  =  U1_GGA(x1, x2, x3, x4, x6)
U3_GGA(x1, x2, x3, x4, x5, x6)  =  U3_GGA(x1, x2, x3, x4, x6)

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

(65) PiDPToQDPProof (SOUND transformation)

Transforming (infinitary) constructor rewriting Pi-DP problem [LOPSTR] into ordinary QDP problem [LPAR04] by application of Pi.

(66) Obligation:

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

U1_GGA(X, Y, Left, Right, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left)
INSERT_IN_GGA(X, tree(Y, Left, Right)) → U1_GGA(X, Y, Left, Right, less_in_gg(X, Y))
INSERT_IN_GGA(X, tree(Y, Left, Right)) → U3_GGA(X, Y, Left, Right, less_in_gg(Y, X))
U3_GGA(X, Y, Left, Right, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right)

The TRS R consists of the following rules:

less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))

The set Q consists of the following terms:

less_in_gg(x0, x1)
U5_gg(x0, x1, x2)

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

(67) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

• INSERT_IN_GGA(X, tree(Y, Left, Right)) → U1_GGA(X, Y, Left, Right, less_in_gg(X, Y))
  The graph contains the following edges 1 >= 1, 2 > 2, 2 > 3, 2 > 4

• INSERT_IN_GGA(X, tree(Y, Left, Right)) → U3_GGA(X, Y, Left, Right, less_in_gg(Y, X))
  The graph contains the following edges 1 >= 1, 2 > 2, 2 > 3, 2 > 4

• U1_GGA(X, Y, Left, Right, less_out_gg(X, Y)) → INSERT_IN_GGA(X, Left)
  The graph contains the following edges 1 >= 1, 5 > 1, 3 >= 2

• U3_GGA(X, Y, Left, Right, less_out_gg(Y, X)) → INSERT_IN_GGA(X, Right)
  The graph contains the following edges 1 >= 1, 5 > 1, 4 >= 2

(68) TRUE

(69) Obligation:

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

LESS_IN_AG(s(X), s(Y)) → LESS_IN_AG(X, Y)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga(x2)
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x2, x3, x4, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1, x2)
U5_ag(x1, x2, x3)  =  U5_ag(x2, x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x2, x3, x4, x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x1, x2, x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x1, x2, x3, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x1, x2, x3, x4, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x2, x3, x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x2, x3, x4, x6)
LESS_IN_AG(x1, x2)  =  LESS_IN_AG(x2)

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

(70) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(71) Obligation:

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

LESS_IN_AG(s(X), s(Y)) → LESS_IN_AG(X, Y)

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

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

(72) PiDPToQDPProof (SOUND transformation)

Transforming (infinitary) constructor rewriting Pi-DP problem [LOPSTR] into ordinary QDP problem [LPAR04] by application of Pi.

(73) Obligation:

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

LESS_IN_AG(s(Y)) → LESS_IN_AG(Y)

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

(74) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

• LESS_IN_AG(s(Y)) → LESS_IN_AG(Y)
  The graph contains the following edges 1 > 1

(75) TRUE

(76) Obligation:

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

INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_AGA(X, Y, Left, Right, Right1, less_in_ga(Y, X))
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → INSERT_IN_AGA(X, Right, Right1)

The TRS R consists of the following rules:

insert_in_aga(X, void, tree(X, void, void)) → insert_out_aga(X, void, tree(X, void, void))
insert_in_aga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_aga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_aga(X, Y, Left, Right, Left1, less_in_ag(X, Y))
less_in_ag(0, s(X1)) → less_out_ag(0, s(X1))
less_in_ag(s(X), s(Y)) → U5_ag(X, Y, less_in_ag(X, Y))
U5_ag(X, Y, less_out_ag(X, Y)) → less_out_ag(s(X), s(Y))
U1_aga(X, Y, Left, Right, Left1, less_out_ag(X, Y)) → U2_aga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, void, tree(X, void, void)) → insert_out_gga(X, void, tree(X, void, void))
insert_in_gga(X, tree(X, Left, Right), tree(X, Left, Right)) → insert_out_gga(X, tree(X, Left, Right), tree(X, Left, Right))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right)) → U1_gga(X, Y, Left, Right, Left1, less_in_gg(X, Y))
less_in_gg(0, s(X1)) → less_out_gg(0, s(X1))
less_in_gg(s(X), s(Y)) → U5_gg(X, Y, less_in_gg(X, Y))
U5_gg(X, Y, less_out_gg(X, Y)) → less_out_gg(s(X), s(Y))
U1_gga(X, Y, Left, Right, Left1, less_out_gg(X, Y)) → U2_gga(X, Y, Left, Right, Left1, insert_in_gga(X, Left, Left1))
insert_in_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_gga(X, Y, Left, Right, Right1, less_in_gg(Y, X))
U3_gga(X, Y, Left, Right, Right1, less_out_gg(Y, X)) → U4_gga(X, Y, Left, Right, Right1, insert_in_gga(X, Right, Right1))
U4_gga(X, Y, Left, Right, Right1, insert_out_gga(X, Right, Right1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left, Right1))
U2_gga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_gga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
U2_aga(X, Y, Left, Right, Left1, insert_out_gga(X, Left, Left1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left1, Right))
insert_in_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_aga(X, Y, Left, Right, Right1, less_in_ga(Y, X))
less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))
U3_aga(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → U4_aga(X, Y, Left, Right, Right1, insert_in_aga(X, Right, Right1))
U4_aga(X, Y, Left, Right, Right1, insert_out_aga(X, Right, Right1)) → insert_out_aga(X, tree(Y, Left, Right), tree(Y, Left, Right1))

The argument filtering Pi contains the following mapping:
insert_in_aga(x1, x2, x3)  =  insert_in_aga(x2)
void  =  void
insert_out_aga(x1, x2, x3)  =  insert_out_aga(x2)
tree(x1, x2, x3)  =  tree(x1, x2, x3)
U1_aga(x1, x2, x3, x4, x5, x6)  =  U1_aga(x2, x3, x4, x6)
less_in_ag(x1, x2)  =  less_in_ag(x2)
s(x1)  =  s(x1)
less_out_ag(x1, x2)  =  less_out_ag(x1, x2)
U5_ag(x1, x2, x3)  =  U5_ag(x2, x3)
U2_aga(x1, x2, x3, x4, x5, x6)  =  U2_aga(x2, x3, x4, x6)
insert_in_gga(x1, x2, x3)  =  insert_in_gga(x1, x2)
insert_out_gga(x1, x2, x3)  =  insert_out_gga(x1, x2, x3)
U1_gga(x1, x2, x3, x4, x5, x6)  =  U1_gga(x1, x2, x3, x4, x6)
less_in_gg(x1, x2)  =  less_in_gg(x1, x2)
0  =  0
less_out_gg(x1, x2)  =  less_out_gg(x1, x2)
U5_gg(x1, x2, x3)  =  U5_gg(x1, x2, x3)
U2_gga(x1, x2, x3, x4, x5, x6)  =  U2_gga(x1, x2, x3, x4, x6)
U3_gga(x1, x2, x3, x4, x5, x6)  =  U3_gga(x1, x2, x3, x4, x6)
U4_gga(x1, x2, x3, x4, x5, x6)  =  U4_gga(x1, x2, x3, x4, x6)
U3_aga(x1, x2, x3, x4, x5, x6)  =  U3_aga(x2, x3, x4, x6)
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
U4_aga(x1, x2, x3, x4, x5, x6)  =  U4_aga(x2, x3, x4, x6)
INSERT_IN_AGA(x1, x2, x3)  =  INSERT_IN_AGA(x2)
U3_AGA(x1, x2, x3, x4, x5, x6)  =  U3_AGA(x2, x3, x4, x6)

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

(77) UsableRulesProof (EQUIVALENT transformation)

For (infinitary) constructor rewriting [LOPSTR] we can delete all non-usable rules from R.

(78) Obligation:

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

INSERT_IN_AGA(X, tree(Y, Left, Right), tree(Y, Left, Right1)) → U3_AGA(X, Y, Left, Right, Right1, less_in_ga(Y, X))
U3_AGA(X, Y, Left, Right, Right1, less_out_ga(Y, X)) → INSERT_IN_AGA(X, Right, Right1)

The TRS R consists of the following rules:

less_in_ga(0, s(X1)) → less_out_ga(0, s(X1))
less_in_ga(s(X), s(Y)) → U5_ga(X, Y, less_in_ga(X, Y))
U5_ga(X, Y, less_out_ga(X, Y)) → less_out_ga(s(X), s(Y))

The argument filtering Pi contains the following mapping:
tree(x1, x2, x3)  =  tree(x1, x2, x3)
s(x1)  =  s(x1)
0  =  0
less_in_ga(x1, x2)  =  less_in_ga(x1)
less_out_ga(x1, x2)  =  less_out_ga(x1)
U5_ga(x1, x2, x3)  =  U5_ga(x1, x3)
INSERT_IN_AGA(x1, x2, x3)  =  INSERT_IN_AGA(x2)
U3_AGA(x1, x2, x3, x4, x5, x6)  =  U3_AGA(x2, x3, x4, x6)

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