TPTP Problem File: COL100-2.p
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- Solve Problem
%--------------------------------------------------------------------------
% File : COL100-2 : TPTP v8.2.0. Released v2.7.0.
% Domain : Combinatory Logic
% Problem : diamond_trancl_2c1
% Version : Especial.
% English : diamond(r) ==> diamond(r^+)
% Refs : [Men03] Meng (2003), Email to G. Sutcliffe
% Source : [Men03]
% Names :
% Status : Unsatisfiable
% Rating : 0.70 v8.2.0, 0.76 v8.1.0, 0.74 v7.5.0, 0.79 v7.4.0, 0.76 v7.3.0, 0.75 v7.1.0, 0.67 v7.0.0, 0.80 v6.3.0, 0.82 v6.2.0, 0.90 v6.1.0, 0.93 v6.0.0, 0.90 v5.5.0, 0.95 v5.3.0, 1.00 v5.2.0, 0.94 v5.0.0, 0.93 v4.1.0, 0.92 v4.0.1, 1.00 v3.3.0, 0.93 v3.2.0, 0.92 v3.1.0, 0.91 v2.7.0
% Syntax : Number of clauses : 160 ( 20 unt; 24 nHn; 135 RR)
% Number of literals : 342 ( 66 equ; 172 neg)
% Maximal clause size : 4 ( 2 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 11 ( 10 usr; 0 prp; 1-8 aty)
% Number of functors : 70 ( 70 usr; 9 con; 0-4 aty)
% Number of variables : 482 ( 151 sgn)
% SPC : CNF_UNS_RFO_SEQ_NHN
% Comments : Full axiomatization where many axioms are not needed for a
% solution.
%--------------------------------------------------------------------------
%----A General Axiom Set, it has most of the classical rules found from
%----.thy (after Main.thy). It has been used for CombZF.
%----consI1
cnf(clause1,axiom,
member(U,cons(U,V)) ).
%----consI2
cnf(clause2,axiom,
( ~ member(U,V)
| member(U,cons(W,V)) ) ).
%----nat_succI
cnf(clause3,axiom,
( ~ member(U,nat)
| member(succ(U),nat) ) ).
%----Inr_iff (direction:Inr(?a) = Inr(?b) <- ?a = ?b)
cnf(clause4,axiom,
( U != V
| inr(U) = inr(V) ) ).
%----Inl_iff (direction:Inl(?a) = Inl(?b) <-> ?a = ?b)
cnf(clause5,axiom,
( U != V
| inl(U) = inl(V) ) ).
%----InlI (disjsum is "+")
cnf(clause6,axiom,
( ~ member(U,V)
| member(inl(U),disjsum(V,W)) ) ).
%----InrI (disjsum is "+")
cnf(clause7,axiom,
( ~ member(U,V)
| member(inr(U),disjsum(W,V)) ) ).
%----two clauses for cons_subsetI
cnf(clause8,axiom,
( ~ member(U,V)
| ~ member(W,cons(U,X))
| member(cons_subsetI_sk1(U,X,V),X)
| member(W,V) ) ).
cnf(clause9,axiom,
( ~ member(U,V)
| ~ member(cons_subsetI_sk1(U,W,V),V)
| ~ member(X,cons(U,W))
| member(X,V) ) ).
%----another version for cons_subsetI
cnf(clause9_1,axiom,
( ~ member(A,C)
| ~ subset(B,C)
| subset(cons(A,B),C) ) ).
%----converseI
cnf(clause10,axiom,
( ~ member(pair(U,V),W)
| member(pair(V,U),converse(W)) ) ).
%----singleton_eq_iff (direction: {?a} = {?b} <- ?a = ?b
cnf(clause11,axiom,
( U != V
| cons(U,eptset) = cons(V,eptset) ) ).
%----two clauses for succCI
cnf(clause12,axiom,
( ~ member(U,V)
| member(U,succ(V)) ) ).
cnf(clause13,axiom,
( U != V
| member(U,succ(V)) ) ).
%----singletonI
cnf(clause14,axiom,
member(U,cons(U,eptset)) ).
%----two clauses for consCI
cnf(clause15,axiom,
( ~ member(U,V)
| member(U,cons(W,V)) ) ).
cnf(clause16,axiom,
( U != V
| member(U,cons(V,W)) ) ).
%----DiffI
cnf(clause17,axiom,
( ~ member(U,V)
| member(U,W)
| member(U,diff(V,W)) ) ).
%----IntI
cnf(clause18,axiom,
( ~ member(U,V)
| ~ member(U,W)
| member(U,int(V,W)) ) ).
%----two clauses for UnCI
cnf(clause19,axiom,
( ~ member(U,V)
| member(U,un(W,V)) ) ).
cnf(clause20,axiom,
( ~ member(U,V)
| member(U,un(V,W)) ) ).
%----two clauses for PowI
cnf(clause21,axiom,
( member(powI_sk1(U,V),U)
| member(U,pow(V)) ) ).
cnf(clause22,axiom,
( ~ member(powI_sk1(U,V),V)
| member(U,pow(V)) ) ).
%----two clauses for InterI
cnf(clause23,axiom,
( ~ member(U,V)
| member(interI_sk1(W,V),V)
| member(W,inter(V)) ) ).
cnf(clause24,axiom,
( ~ member(U,interI_sk1(U,V))
| ~ member(W,V)
| member(U,inter(V)) ) ).
%----intro:
%----two clauses for Card_Union
cnf(clause25,axiom,
( member(card_Union_sk1(U),U)
| card(union(U)) ) ).
cnf(clause26,axiom,
( ~ card(card_Union_sk1(U))
| card(union(U)) ) ).
%----Fin_IntI1 (fin is Fin in Isabelle)
cnf(clause27,axiom,
( ~ member(U,fin(V))
| member(int(U,W),fin(V)) ) ).
%----Fin_IntI2
cnf(clause28,axiom,
( ~ member(U,fin(V))
| member(int(W,U),fin(V)) ) ).
%----two clauses for Ord_Inter
cnf(clause29,axiom,
( member(order_Inter_sk1(U),U)
| ord(inter(U)) ) ).
cnf(clause30,axiom,
( ~ ord(order_Inter_sk1(U))
| ord(inter(U)) ) ).
%----two axioms for Ord_Union
cnf(clause31,axiom,
( member(order_Union_sk1(U),U)
| ord(union(U)) ) ).
cnf(clause32,axiom,
( ~ ord(order_Union_sk1(U))
| ord(union(U)) ) ).
%----Ord_Un
cnf(clause33,axiom,
( ~ ord(U)
| ~ ord(V)
| ord(un(U,V)) ) ).
%----compI (comp is "O")
cnf(clause34,axiom,
( ~ member(pair(U,V),W)
| ~ member(pair(V,X),Y)
| member(pair(U,X),comp(Y,W)) ) ).
%----vimageI (vimage is "-``")
cnf(clause35,axiom,
( ~ member(pair(U,V),W)
| ~ member(V,X)
| member(U,vimage(W,X)) ) ).
%----imageI (image is "``")
cnf(clause36,axiom,
( ~ member(pair(U,V),W)
| ~ member(U,X)
| member(V,image(W,X)) ) ).
%----elim!
%----QInr_QInl_iff
cnf(clause37,axiom,
qInr(U) != qInl(V) ).
%----QInl_QInr_iff
cnf(clause38,axiom,
qInl(U) != qInr(V) ).
%----QInr_inject
cnf(clause39,axiom,
( qInr(U) != qInr(V)
| U = V ) ).
%----QInl_inject
cnf(clause40,axiom,
( qInl(U) != qInl(V)
| U = V ) ).
%----four clauses for axiom qsumE (qsum is "<+>")
cnf(clause41,axiom,
( ~ member(U,qsum(V,W))
| member(qsumE_sk1(U,V,W),V)
| member(qsumE_sk2(U,V,W),W) ) ).
cnf(clause42,axiom,
( ~ member(U,qsum(V,W))
| member(qsumE_sk1(U,V,W),V)
| U = qInr(qsumE_sk2(U,V,W)) ) ).
cnf(clause43,axiom,
( ~ member(U,qsum(V,W))
| U = qInl(qsumE_sk1(U,V,W))
| member(qsumE_sk2(U,V,W),W) ) ).
cnf(clause44,axiom,
( ~ member(U,qsum(V,W))
| U = qInl(qsumE_sk1(U,V,W))
| U = qInr(qsumE_sk2(U,V,W)) ) ).
%----two clauses for qconverseE (qPair is "<-; ->")
cnf(clause45,axiom,
( ~ member(U,qconverse(V))
| U = qPair(qconverseE_sk2(U,V),qconverseE_sk1(U,V)) ) ).
cnf(clause46,axiom,
( ~ member(U,qconverse(V))
| member(qPair(qconverseE_sk1(U,V),qconverseE_sk2(U,V)),V) ) ).
%----qconverseD
cnf(clause47,axiom,
( ~ member(qPair(U,V),qconverse(W))
| member(qPair(V,U),W) ) ).
%----QPair_inject1
cnf(clause48,axiom,
( qPair(U,V) != qPair(W,X)
| U = W ) ).
%----QPair_inject2
cnf(clause49,axiom,
( qPair(U,V) != qPair(W,X)
| V = X ) ).
%----succ_natD
cnf(clause50,axiom,
( ~ member(succ(U),nat)
| member(U,nat) ) ).
%----rmultE
cnf(clause51,axiom,
( ~ member(pair(pair(U,V),pair(W,X)),rmult(Y,Z,X1,X2))
| rmultE_c1(U,V,W,X,Y,Z,X1,X2)
| rmultE_c2(U,V,W,X,Y,Z,X1,X2) ) ).
cnf(clause52,axiom,
( ~ rmultE_c1(U,V,W,X,Y,Z,X1,X2)
| member(pair(U,W),Z) ) ).
cnf(clause53,axiom,
( ~ rmultE_c1(U,V,W,X,Y,Z,X1,X2)
| member(U,Y) ) ).
cnf(clause54,axiom,
( ~ rmultE_c1(U,V,W,X,Y,Z,X1,X2)
| member(W,Y) ) ).
cnf(clause55,axiom,
( ~ rmultE_c1(U,V,W,X,Y,Z,X1,X2)
| member(V,X1) ) ).
cnf(clause56,axiom,
( ~ rmultE_c1(U,V,W,X,Y,Z,X1,X2)
| member(X,X1) ) ).
cnf(clause57,axiom,
( ~ rmultE_c2(U,V,W,X,Y,Z,X1,X2)
| member(pair(V,X),X2) ) ).
cnf(clause58,axiom,
( ~ rmultE_c2(U,V,W,X,Y,Z,X1,X2)
| member(W,Y) ) ).
cnf(clause59,axiom,
( ~ rmultE_c2(U,V,W,X,Y,Z,X1,X2)
| U = W ) ).
cnf(clause60,axiom,
( ~ rmultE_c2(U,V,W,X,Y,Z,X1,X2)
| member(V,X1) ) ).
cnf(clause61,axiom,
( ~ rmultE_c2(U,V,W,X,Y,Z,X1,X2)
| member(X,X1) ) ).
%----radd_Inr_Inl_iff
cnf(clause62,axiom,
~ member(pair(inr(U),inl(V)),radd(W,X,Y,Z)) ).
%----three clauses for radd_Inr_iff (direction: LHS->RHS)
cnf(clause63,axiom,
( ~ member(pair(inr(U),inr(V)),radd(W,X,Y,Z))
| member(U,Y) ) ).
cnf(clause64,axiom,
( ~ member(pair(inr(U),inr(V)),radd(W,X,Y,Z))
| member(V,Y) ) ).
cnf(clause65,axiom,
( ~ member(pair(inr(U),inr(V)),radd(W,X,Y,Z))
| member(pair(U,V),Z) ) ).
%----three clauses for radd_Inl_iff (direction: LHS->RHS)
cnf(clause66,axiom,
( ~ member(pair(inl(U),inl(V)),radd(W,X,Y,Z))
| member(U,W) ) ).
cnf(clause67,axiom,
( ~ member(pair(inl(U),inl(V)),radd(W,X,Y,Z))
| member(V,W) ) ).
cnf(clause68,axiom,
( ~ member(pair(inl(U),inl(V)),radd(W,X,Y,Z))
| member(pair(U,V),X) ) ).
%----two clauses for radd_Inl_Inr_iff (direction: lHS->RHS)
cnf(clause69,axiom,
( ~ member(pair(inl(U),inr(V)),radd(W,X,Y,Z))
| member(U,W) ) ).
cnf(clause70,axiom,
( ~ member(pair(inl(U),inr(V)),radd(W,X,Y,Z))
| member(V,Y) ) ).
%----succ_leE (le is "<=", lt is "<")
cnf(clause71,axiom,
( ~ le(succ(U),V)
| lt(U,V) ) ).
%----zero_le_succ_iff (direction: LHS->RHS),(zero is represented as eptset here)
cnf(clause72,axiom,
( ~ le(eptset,succ(U))
| ord(U) ) ).
%----three clauses for MemrelE
cnf(clause73,axiom,
( ~ member(pair(U,V),memrel(W))
| member(U,W) ) ).
cnf(clause74,axiom,
( ~ member(pair(U,V),memrel(W))
| member(V,W) ) ).
cnf(clause75,axiom,
( ~ member(pair(U,V),memrel(W))
| member(U,V) ) ).
%----le0D (zero is represented as eptset)
cnf(clause76,axiom,
( ~ le(U,eptset)
| U = eptset ) ).
%----le_refl_iff (direction: LHS->RHS)
cnf(clause77,axiom,
( ~ le(U,U)
| ord(U) ) ).
%----Ord_succ_iff (direction: LHS->RHS)
cnf(clause78,axiom,
( ~ ord(succ(U))
| ord(U) ) ).
%----three clauses for compE
cnf(clause79,axiom,
( ~ member(U,comp(V,W))
| U = pair(compE_sk1(U,V,W),compE_sk3(U,V,W)) ) ).
cnf(clause80,axiom,
( ~ member(U,comp(V,W))
| member(pair(compE_sk1(U,V,W),compE_sk2(U,V,W)),W) ) ).
cnf(clause81,axiom,
( ~ member(U,comp(V,W))
| member(pair(compE_sk2(U,V,W),compE_sk3(U,V,W)),V) ) ).
%----two clauses for idE
cnf(clause82,axiom,
( ~ member(U,id(V))
| member(idE_sk1(U,V),V) ) ).
cnf(clause83,axiom,
( ~ member(U,id(V))
| U = pair(idE_sk1(U,V),idE_sk1(U,V)) ) ).
%----Inr_Inl_iff
cnf(clause84,axiom,
inr(U) != inl(V) ).
%----Inl_Inr_iff
cnf(clause85,axiom,
inl(U) != inr(V) ).
%----Inr_iff (direction: LHS->RHS)
cnf(clause86,axiom,
( inr(U) != inr(V)
| U = V ) ).
%----Inl_iff
cnf(clause87,axiom,
( inl(U) != inl(V)
| U = V ) ).
%----four clauses for sumE (disjsum is "+")
cnf(clause88,axiom,
( ~ member(U,disjsum(V,W))
| member(sumE_sk1(U,V,W),V)
| member(sumE_sk2(U,V,W),W) ) ).
cnf(clause89,axiom,
( ~ member(U,disjsum(V,W))
| member(sumE_sk1(U,V,W),V)
| U = inr(sumE_sk2(U,V,W)) ) ).
cnf(clause90,axiom,
( ~ member(U,disjsum(V,W))
| U = inl(sumE_sk1(U,V,W))
| member(sumE_sk2(U,V,W),W) ) ).
cnf(clause91,axiom,
( ~ member(U,disjsum(V,W))
| U = inl(sumE_sk1(U,V,W))
| U = inr(sumE_sk2(U,V,W)) ) ).
%----two clauses for vimageE
cnf(clause92,axiom,
( ~ member(U,vimage(V,W))
| member(pair(U,vimageE_sk1(U,V,W)),V) ) ).
cnf(clause93,axiom,
( ~ member(U,vimage(V,W))
| member(vimageE_sk1(U,V,W),W) ) ).
%----two clauses for imageE
cnf(clause94,axiom,
( ~ member(U,image(V,W))
| member(pair(imageE_sk1(U,V,W),U),V) ) ).
cnf(clause95,axiom,
( ~ member(U,image(V,W))
| member(imageE_sk1(U,V,W),W) ) ).
%----fieldE
cnf(clause96,axiom,
( ~ member(U,field(V))
| member(pair(U,fieldE_sk1(U,V)),V)
| member(pair(fieldE_sk2(U,V),U),V) ) ).
%----rangeE
cnf(clause97,axiom,
( ~ member(U,range(V))
| member(pair(rangeE_sk1(U,V),U),V) ) ).
%----domainE
cnf(clause98,axiom,
( ~ member(U,domain(V))
| member(pair(U,domainE_sk1(U,V)),V) ) ).
%----four clauses for cons_subsetE
cnf(clause99,axiom,
( member(cons_subsetE_sk1(U,V,W),cons(U,V))
| member(U,W) ) ).
cnf(clause100,axiom,
( ~ member(cons_subsetE_sk1(U,V,W),W)
| member(U,W) ) ).
cnf(clause101,axiom,
( ~ member(U,V)
| member(cons_subsetE_sk1(W,V,X),cons(W,V))
| member(U,X) ) ).
cnf(clause102,axiom,
( ~ member(cons_subsetE_sk1(U,V,W),W)
| ~ member(X,V)
| member(X,W) ) ).
%----another version of cons_subsetE
cnf(clause102_1,axiom,
( ~ subset(cons(A,B),C)
| member(A,C) ) ).
cnf(clause102_2,axiom,
( ~ subset(cons(A,B),C)
| subset(B,C) ) ).
%----two clauses for converseE
cnf(clause103,axiom,
( ~ member(U,converse(V))
| U = pair(converseE_sk2(U,V),converseE_sk1(U,V)) ) ).
cnf(clause104,axiom,
( ~ member(U,converse(V))
| member(pair(converseE_sk1(U,V),converseE_sk2(U,V)),V) ) ).
%----converseD
cnf(clause105,axiom,
( ~ member(pair(U,V),converse(W))
| member(pair(V,U),W) ) ).
%----Pair_inject1
cnf(clause106,axiom,
( pair(U,V) != pair(W,X)
| U = W ) ).
%----Pair_inject2
cnf(clause107,axiom,
( pair(U,V) != pair(W,X)
| V = X ) ).
%----singleton_eq_iff (direction: LHS->RHS)
cnf(clause108,axiom,
( cons(U,eptset) != cons(V,eptset)
| U = V ) ).
%----succ_inject
cnf(clause109,axiom,
( succ(U) != succ(V)
| U = V ) ).
%----succE
cnf(clause110,axiom,
( ~ member(U,succ(V))
| U = V
| member(U,V) ) ).
%----singletonE
cnf(clause111,axiom,
( ~ member(U,cons(V,eptset))
| U = V ) ).
%----consE
cnf(clause112,axiom,
( ~ member(U,cons(V,W))
| U = V
| member(U,W) ) ).
%----DiffD1
cnf(clause113,axiom,
( ~ member(U,diff(V,W))
| member(U,V) ) ).
%----DiffD2
cnf(clause114,axiom,
( ~ member(U,diff(V,W))
| ~ member(U,W) ) ).
%----IntD1
cnf(clause115,axiom,
( ~ member(U,int(V,W))
| member(U,V) ) ).
%----IntD2
cnf(clause116,axiom,
( ~ member(U,int(V,W))
| member(U,W) ) ).
%----UnE
cnf(clause117,axiom,
( ~ member(U,un(V,W))
| member(U,V)
| member(U,W) ) ).
%----PowD
cnf(clause118,axiom,
( ~ member(U,pow(V))
| ~ member(W,U)
| member(W,V) ) ).
%----two clauses for UnionE
cnf(clause119,axiom,
( ~ member(U,union(V))
| member(U,unionE_sk1(U,V)) ) ).
cnf(clause120,axiom,
( ~ member(U,union(V))
| member(unionE_sk1(U,V),V) ) ).
%----elim
%----equals0D
cnf(clause121,axiom,
( U != eptset
| ~ member(V,U) ) ).
%----InterD
cnf(clause122,axiom,
( ~ member(U,inter(V))
| ~ member(W,V)
| member(U,W) ) ).
%----two clauses for subsetD
%----subset relation is represented by membership relation
cnf(clause123,axiom,
( ~ member(U,V)
| member(subsetD_sk1(V,W,U),V)
| member(U,W) ) ).
cnf(clause124,axiom,
( ~ member(subsetD_sk1(U,V,W),V)
| ~ member(W,U)
| member(W,V) ) ).
%----another version of subsetD
cnf(subsetD,axiom,
( ~ subset(A,B)
| ~ member(C,A)
| member(C,B) ) ).
%----two clauses for fieldCI
cnf(clause125,axiom,
( ~ member(pair(C,A),R)
| member(A,field(R)) ) ).
cnf(clause126,axiom,
( ~ member(pair(A,B),R)
| member(A,field(R)) ) ).
%----Pair_neq_0
cnf(clause127,axiom,
pair(A,B) != eptset ).
%----Pair_neq_fst
cnf(clause128,axiom,
pair(A,B) != A ).
%----Pair_neq_snd
cnf(clause129,axiom,
pair(A,B) != B ).
%----ABOUT SUBSET RELATION.
%----two clauses for subsetI
cnf(clause131,axiom,
( member(subsetI_sk1(A,B),A)
| subset(A,B) ) ).
cnf(clause132,axiom,
( ~ member(subsetI_sk1(A,B),B)
| subset(A,B) ) ).
%----subset_refl
cnf(clause133,axiom,
subset(A,A) ).
%----subset_trans
cnf(clause134,axiom,
( ~ subset(A,B)
| ~ subset(B,C)
| subset(A,C) ) ).
%----empty_subsetI
cnf(clause135,axiom,
( ~ member(X,eptset)
| member(X,A) ) ).
%----another version of empty_subsetI
cnf(clause136,axiom,
subset(eptset,A) ).
%----equalityI
cnf(clause148,axiom,
( ~ subset(A,B)
| ~ subset(B,A)
| A = B ) ).
%----equalityD1
cnf(clause149,axiom,
( A != B
| subset(A,B) ) ).
%----equalityD2
cnf(clause150,axiom,
( A != B
| subset(B,A) ) ).
%----axioms from CombZF.thy.
%----free algebra for K, S, comb_app(P,Q).
cnf(k_s,axiom,
combK != combS ).
cnf(k_app,axiom,
combK != comb_app(P,Q) ).
cnf(s_app,axiom,
combS != comb_app(P,Q) ).
cnf(app_app1,axiom,
( comb_app(P1,Q1) != comb_app(P2,Q2)
| P1 = P2 ) ).
cnf(app_app2,axiom,
( comb_app(P1,Q1) != comb_app(P2,Q2)
| Q1 = Q2 ) ).
cnf(app_app3,axiom,
( P1 != P2
| Q1 != Q2
| comb_app(P1,Q1) = comb_app(P2,Q2) ) ).
%----axiom r_intro_trancl, trans_trancl, transD, diamond_strip_lemmaD are needed here locally.
cnf(r_into_trancl,axiom,
( ~ member(pair(A,B),R)
| member(pair(A,B),trancl(R)) ) ).
cnf(trans_trancl,axiom,
trans(trancl(R)) ).
cnf(transD,axiom,
( ~ trans(R)
| ~ member(pair(A,B),R)
| ~ member(pair(B,C),R)
| member(pair(A,C),R) ) ).
cnf(diamond_strip_lemmaD1,axiom,
( ~ diamond(R)
| ~ member(pair(X,Y),trancl(R))
| ~ member(pair(X,YP),R)
| member(pair(YP,diamond_strip_lemmaD_sk1(X,Y,YP,R)),trancl(R)) ) ).
cnf(diamond_strip_lemmaD2,axiom,
( ~ diamond(R)
| ~ member(pair(X,Y),trancl(R))
| ~ member(pair(X,YP),R)
| member(pair(Y,diamond_strip_lemmaD_sk1(X,Y,YP,R)),R) ) ).
cnf(diamond_trancl_2h1,hypothesis,
diamond(r) ).
cnf(diamond_trancl_2h2,hypothesis,
member(pair(y,ya),trancl(r)) ).
cnf(diamond_trancl_2h3,hypothesis,
member(pair(ya,z),r) ).
cnf(diamond_trancl_2h4,hypothesis,
( ~ member(pair(y,YP),trancl(r))
| member(pair(ya,sk1(YP)),trancl(r)) ) ).
cnf(diamond_trancl_2h5,hypothesis,
( ~ member(pair(y,YP),trancl(r))
| member(pair(YP,sk1(YP)),trancl(r)) ) ).
cnf(diamond_trancl_2c1,negated_conjecture,
member(pair(y,yp),trancl(r)) ).
cnf(diamond_trancl_2c2,negated_conjecture,
( ~ member(pair(z,ZA),trancl(r))
| ~ member(pair(yp,ZA),trancl(r)) ) ).
%--------------------------------------------------------------------------