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CSE_E---1.7.UNS-CRf.s

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%------------------------------------------------------------------------------
% File     : CSE_E---1.7
% Problem  : SET136-6 : TPTP v9.2.1. Bugfixed v2.1.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d

% Computer : n018.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Tue May  5 05:07:25 PM UTC 2026

% Result   : Unsatisfiable 23.15s 16.41s
% Output   : CNFRefutation 23.15s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   23
%            Number of leaves      :   18
% Syntax   : Number of clauses     :  106 (  37 unt;  31 nHn;  60 RR)
%            Number of literals    :  188 (  49 equ;  55 neg)
%            Maximal clause size   :    3 (   1 avg)
%            Maximal term depth    :   11 (   2 avg)
%            Number of predicates  :    4 (   2 usr;   1 prp; 0-2 aty)
%            Number of functors    :   13 (  13 usr;   5 con; 0-2 aty)
%            Number of variables   :  168 (  26 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(subclass_members,axiom,
    ( member(X3,X2)
    | ~ subclass(X1,X2)
    | ~ member(X3,X1) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',subclass_members) ).

cnf(class_elements_are_sets,axiom,
    subclass(X1,universal_class),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',class_elements_are_sets) ).

cnf(complement1,axiom,
    ( ~ member(X1,complement(X2))
    | ~ member(X1,X2) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',complement1) ).

cnf(regularity1,axiom,
    ( X1 = null_class
    | member(regular(X1),X1) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',regularity1) ).

cnf(definition_of_set_builder,axiom,
    union(singleton(X1),X2) = set_builder(X1,X2),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',definition_of_set_builder) ).

cnf(singleton_set,axiom,
    unordered_pair(X1,X1) = singleton(X1),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',singleton_set) ).

cnf(prove_corollary_4_to_member_of_triple_2,negated_conjecture,
    set_builder(x,set_builder(y,set_builder(u,null_class))) = null_class,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_corollary_4_to_member_of_triple_2) ).

cnf(union,axiom,
    complement(intersection(complement(X1),complement(X2))) = union(X1,X2),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',union) ).

cnf(complement2,axiom,
    ( member(X1,complement(X2))
    | member(X1,X2)
    | ~ member(X1,universal_class) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',complement2) ).

cnf(intersection1,axiom,
    ( member(X1,X2)
    | ~ member(X1,intersection(X2,X3)) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',intersection1) ).

cnf(intersection2,axiom,
    ( member(X1,X3)
    | ~ member(X1,intersection(X2,X3)) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',intersection2) ).

cnf(not_subclass_members1,axiom,
    ( member(not_subclass_element(X1,X2),X1)
    | subclass(X1,X2) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',not_subclass_members1) ).

cnf(unordered_pair_member,axiom,
    ( X1 = X2
    | X1 = X3
    | ~ member(X1,unordered_pair(X2,X3)) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',unordered_pair_member) ).

cnf(not_subclass_members2,axiom,
    ( subclass(X1,X2)
    | ~ member(not_subclass_element(X1,X2),X2) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',not_subclass_members2) ).

cnf(subclass_implies_equal,axiom,
    ( X1 = X2
    | ~ subclass(X1,X2)
    | ~ subclass(X2,X1) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',subclass_implies_equal) ).

cnf(intersection3,axiom,
    ( member(X1,intersection(X2,X3))
    | ~ member(X1,X2)
    | ~ member(X1,X3) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',intersection3) ).

cnf(unordered_pair2,axiom,
    ( member(X1,unordered_pair(X1,X2))
    | ~ member(X1,universal_class) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',unordered_pair2) ).

cnf(prove_corollary_4_to_member_of_triple_1,negated_conjecture,
    member(u,universal_class),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_corollary_4_to_member_of_triple_1) ).

cnf(c_0_18,axiom,
    ( member(X3,X2)
    | ~ subclass(X1,X2)
    | ~ member(X3,X1) ),
    subclass_members ).

cnf(c_0_19,axiom,
    subclass(X1,universal_class),
    class_elements_are_sets ).

cnf(c_0_20,axiom,
    ( ~ member(X1,complement(X2))
    | ~ member(X1,X2) ),
    complement1 ).

cnf(c_0_21,axiom,
    ( X1 = null_class
    | member(regular(X1),X1) ),
    regularity1 ).

cnf(c_0_22,plain,
    ( member(X1,universal_class)
    | ~ member(X1,X2) ),
    inference(spm,[status(thm)],[c_0_18,c_0_19]) ).

cnf(c_0_23,axiom,
    union(singleton(X1),X2) = set_builder(X1,X2),
    definition_of_set_builder ).

cnf(c_0_24,axiom,
    unordered_pair(X1,X1) = singleton(X1),
    singleton_set ).

cnf(c_0_25,plain,
    ( complement(X1) = null_class
    | ~ member(regular(complement(X1)),X1) ),
    inference(spm,[status(thm)],[c_0_20,c_0_21]) ).

cnf(c_0_26,plain,
    ( X1 = null_class
    | member(regular(X1),universal_class) ),
    inference(spm,[status(thm)],[c_0_22,c_0_21]) ).

cnf(c_0_27,negated_conjecture,
    set_builder(x,set_builder(y,set_builder(u,null_class))) = null_class,
    prove_corollary_4_to_member_of_triple_2 ).

cnf(c_0_28,plain,
    union(unordered_pair(X1,X1),X2) = set_builder(X1,X2),
    inference(rw,[status(thm)],[c_0_23,c_0_24]) ).

cnf(c_0_29,axiom,
    complement(intersection(complement(X1),complement(X2))) = union(X1,X2),
    union ).

cnf(c_0_30,plain,
    complement(universal_class) = null_class,
    inference(spm,[status(thm)],[c_0_25,c_0_26]) ).

cnf(c_0_31,axiom,
    ( member(X1,complement(X2))
    | member(X1,X2)
    | ~ member(X1,universal_class) ),
    complement2 ).

cnf(c_0_32,negated_conjecture,
    complement(intersection(complement(unordered_pair(x,x)),complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(intersection(complement(unordered_pair(u,u)),complement(null_class))))))))) = null_class,
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_27,c_0_28]),c_0_28]),c_0_28]),c_0_29]),c_0_29]),c_0_29]) ).

cnf(c_0_33,plain,
    ~ member(X1,null_class),
    inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_20,c_0_30]),c_0_22]) ).

cnf(c_0_34,axiom,
    ( member(X1,X2)
    | ~ member(X1,intersection(X2,X3)) ),
    intersection1 ).

cnf(c_0_35,negated_conjecture,
    ( member(X1,intersection(complement(unordered_pair(x,x)),complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(intersection(complement(unordered_pair(u,u)),complement(null_class)))))))))
    | ~ member(X1,universal_class) ),
    inference(sr,[status(thm)],[inference(spm,[status(thm)],[c_0_31,c_0_32]),c_0_33]) ).

cnf(c_0_36,axiom,
    ( member(X1,X3)
    | ~ member(X1,intersection(X2,X3)) ),
    intersection2 ).

cnf(c_0_37,axiom,
    ( member(not_subclass_element(X1,X2),X1)
    | subclass(X1,X2) ),
    not_subclass_members1 ).

cnf(c_0_38,axiom,
    ( X1 = X2
    | X1 = X3
    | ~ member(X1,unordered_pair(X2,X3)) ),
    unordered_pair_member ).

cnf(c_0_39,negated_conjecture,
    ( member(X1,complement(unordered_pair(x,x)))
    | ~ member(X1,universal_class) ),
    inference(spm,[status(thm)],[c_0_34,c_0_35]) ).

cnf(c_0_40,axiom,
    ( subclass(X1,X2)
    | ~ member(not_subclass_element(X1,X2),X2) ),
    not_subclass_members2 ).

cnf(c_0_41,plain,
    ( member(not_subclass_element(intersection(X1,X2),X3),X2)
    | subclass(intersection(X1,X2),X3) ),
    inference(spm,[status(thm)],[c_0_36,c_0_37]) ).

cnf(c_0_42,plain,
    ( not_subclass_element(unordered_pair(X1,X2),X3) = X1
    | not_subclass_element(unordered_pair(X1,X2),X3) = X2
    | subclass(unordered_pair(X1,X2),X3) ),
    inference(spm,[status(thm)],[c_0_38,c_0_37]) ).

cnf(c_0_43,negated_conjecture,
    ~ member(X1,unordered_pair(x,x)),
    inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_20,c_0_39]),c_0_22]) ).

cnf(c_0_44,plain,
    ( intersection(X1,X2) = null_class
    | member(regular(intersection(X1,X2)),X1) ),
    inference(spm,[status(thm)],[c_0_34,c_0_21]) ).

cnf(c_0_45,plain,
    ( intersection(X1,X2) = null_class
    | member(regular(intersection(X1,X2)),X2) ),
    inference(spm,[status(thm)],[c_0_36,c_0_21]) ).

cnf(c_0_46,axiom,
    ( X1 = X2
    | ~ subclass(X1,X2)
    | ~ subclass(X2,X1) ),
    subclass_implies_equal ).

cnf(c_0_47,plain,
    subclass(intersection(X1,X2),X2),
    inference(spm,[status(thm)],[c_0_40,c_0_41]) ).

cnf(c_0_48,plain,
    ( member(not_subclass_element(X1,X2),universal_class)
    | subclass(X1,X2) ),
    inference(spm,[status(thm)],[c_0_22,c_0_37]) ).

cnf(c_0_49,plain,
    ( not_subclass_element(unordered_pair(X1,X1),X2) = X1
    | subclass(unordered_pair(X1,X1),X2) ),
    inference(er,[status(thm)],[inference(ef,[status(thm)],[c_0_42])]) ).

cnf(c_0_50,negated_conjecture,
    unordered_pair(x,x) = null_class,
    inference(spm,[status(thm)],[c_0_43,c_0_21]) ).

cnf(c_0_51,axiom,
    ( member(X1,intersection(X2,X3))
    | ~ member(X1,X2)
    | ~ member(X1,X3) ),
    intersection3 ).

cnf(c_0_52,plain,
    ( intersection(complement(X1),X2) = null_class
    | ~ member(regular(intersection(complement(X1),X2)),X1) ),
    inference(spm,[status(thm)],[c_0_20,c_0_44]) ).

cnf(c_0_53,plain,
    ( intersection(X1,intersection(X2,X3)) = null_class
    | member(regular(intersection(X1,intersection(X2,X3))),X2) ),
    inference(spm,[status(thm)],[c_0_34,c_0_45]) ).

cnf(c_0_54,plain,
    ( intersection(X1,X2) = X2
    | ~ subclass(X2,intersection(X1,X2)) ),
    inference(spm,[status(thm)],[c_0_46,c_0_47]) ).

cnf(c_0_55,plain,
    ( member(X1,universal_class)
    | subclass(unordered_pair(X1,X1),X2) ),
    inference(spm,[status(thm)],[c_0_48,c_0_49]) ).

cnf(c_0_56,negated_conjecture,
    ( member(X1,complement(null_class))
    | ~ member(X1,universal_class) ),
    inference(rw,[status(thm)],[c_0_39,c_0_50]) ).

cnf(c_0_57,plain,
    ( subclass(X1,intersection(X2,X3))
    | ~ member(not_subclass_element(X1,intersection(X2,X3)),X3)
    | ~ member(not_subclass_element(X1,intersection(X2,X3)),X2) ),
    inference(spm,[status(thm)],[c_0_40,c_0_51]) ).

cnf(c_0_58,plain,
    intersection(complement(X1),intersection(X1,X2)) = null_class,
    inference(spm,[status(thm)],[c_0_52,c_0_53]) ).

cnf(c_0_59,plain,
    ( intersection(X1,unordered_pair(X2,X2)) = unordered_pair(X2,X2)
    | member(X2,universal_class) ),
    inference(spm,[status(thm)],[c_0_54,c_0_55]) ).

cnf(c_0_60,plain,
    ( universal_class = X1
    | ~ subclass(universal_class,X1) ),
    inference(spm,[status(thm)],[c_0_46,c_0_19]) ).

cnf(c_0_61,negated_conjecture,
    subclass(X1,complement(null_class)),
    inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_40,c_0_56]),c_0_48]) ).

cnf(c_0_62,plain,
    ( subclass(X1,intersection(X2,X1))
    | ~ member(not_subclass_element(X1,intersection(X2,X1)),X2) ),
    inference(spm,[status(thm)],[c_0_57,c_0_37]) ).

cnf(c_0_63,plain,
    ( member(not_subclass_element(intersection(X1,X2),X3),X1)
    | subclass(intersection(X1,X2),X3) ),
    inference(spm,[status(thm)],[c_0_34,c_0_37]) ).

cnf(c_0_64,plain,
    ( intersection(complement(X1),unordered_pair(X2,X2)) = null_class
    | member(X2,universal_class) ),
    inference(spm,[status(thm)],[c_0_58,c_0_59]) ).

cnf(c_0_65,negated_conjecture,
    complement(null_class) = universal_class,
    inference(spm,[status(thm)],[c_0_60,c_0_61]) ).

cnf(c_0_66,negated_conjecture,
    complement(intersection(complement(null_class),complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(intersection(complement(unordered_pair(u,u)),complement(null_class))))))))) = null_class,
    inference(rw,[status(thm)],[c_0_32,c_0_50]) ).

cnf(c_0_67,plain,
    subclass(X1,intersection(universal_class,X1)),
    inference(spm,[status(thm)],[c_0_62,c_0_48]) ).

cnf(c_0_68,plain,
    ( subclass(intersection(X1,X2),intersection(X3,X1))
    | ~ member(not_subclass_element(intersection(X1,X2),intersection(X3,X1)),X3) ),
    inference(spm,[status(thm)],[c_0_57,c_0_63]) ).

cnf(c_0_69,negated_conjecture,
    ( intersection(universal_class,unordered_pair(X1,X1)) = null_class
    | member(X1,universal_class) ),
    inference(spm,[status(thm)],[c_0_64,c_0_65]) ).

cnf(c_0_70,plain,
    ( member(not_subclass_element(X1,complement(X2)),X2)
    | subclass(X1,complement(X2))
    | ~ member(not_subclass_element(X1,complement(X2)),universal_class) ),
    inference(spm,[status(thm)],[c_0_40,c_0_31]) ).

cnf(c_0_71,plain,
    ( subclass(complement(X1),X2)
    | ~ member(not_subclass_element(complement(X1),X2),X1) ),
    inference(spm,[status(thm)],[c_0_20,c_0_37]) ).

cnf(c_0_72,negated_conjecture,
    complement(intersection(universal_class,complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(intersection(complement(unordered_pair(u,u)),universal_class)))))))) = null_class,
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_66,c_0_65]),c_0_65]) ).

cnf(c_0_73,plain,
    intersection(universal_class,X1) = X1,
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_46,c_0_67]),c_0_47])]) ).

cnf(c_0_74,plain,
    subclass(intersection(X1,X2),intersection(X2,X1)),
    inference(spm,[status(thm)],[c_0_68,c_0_41]) ).

cnf(c_0_75,negated_conjecture,
    ( member(X1,universal_class)
    | ~ member(X2,unordered_pair(X1,X1)) ),
    inference(csr,[status(thm)],[inference(sr,[status(thm)],[inference(spm,[status(thm)],[c_0_51,c_0_69]),c_0_33]),c_0_22]) ).

cnf(c_0_76,plain,
    ( member(not_subclass_element(X1,complement(X2)),X2)
    | subclass(X1,complement(X2)) ),
    inference(spm,[status(thm)],[c_0_70,c_0_48]) ).

cnf(c_0_77,plain,
    ( member(not_subclass_element(complement(complement(X1)),X2),X1)
    | subclass(complement(complement(X1)),X2) ),
    inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_71,c_0_31]),c_0_48]) ).

cnf(c_0_78,negated_conjecture,
    complement(complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(intersection(complement(unordered_pair(u,u)),universal_class))))))) = null_class,
    inference(rw,[status(thm)],[c_0_72,c_0_73]) ).

cnf(c_0_79,plain,
    intersection(X1,X2) = intersection(X2,X1),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_46,c_0_74]),c_0_74])]) ).

cnf(c_0_80,negated_conjecture,
    ( member(X1,universal_class)
    | subclass(X2,complement(unordered_pair(X1,X1))) ),
    inference(spm,[status(thm)],[c_0_75,c_0_76]) ).

cnf(c_0_81,plain,
    subclass(complement(complement(X1)),X1),
    inference(spm,[status(thm)],[c_0_40,c_0_77]) ).

cnf(c_0_82,negated_conjecture,
    complement(complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(complement(unordered_pair(u,u)))))))) = null_class,
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_78,c_0_79]),c_0_73]) ).

cnf(c_0_83,negated_conjecture,
    ( complement(unordered_pair(X1,X1)) = universal_class
    | member(X1,universal_class) ),
    inference(spm,[status(thm)],[c_0_60,c_0_80]) ).

cnf(c_0_84,plain,
    ( member(not_subclass_element(intersection(intersection(X1,X2),X3),X4),X1)
    | subclass(intersection(intersection(X1,X2),X3),X4) ),
    inference(spm,[status(thm)],[c_0_34,c_0_63]) ).

cnf(c_0_85,negated_conjecture,
    ( member(X1,intersection(complement(null_class),complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(intersection(complement(unordered_pair(u,u)),complement(null_class)))))))))
    | ~ member(X1,universal_class) ),
    inference(rw,[status(thm)],[c_0_35,c_0_50]) ).

cnf(c_0_86,plain,
    ( complement(complement(X1)) = X1
    | ~ subclass(X1,complement(complement(X1))) ),
    inference(spm,[status(thm)],[c_0_46,c_0_81]) ).

cnf(c_0_87,negated_conjecture,
    ( complement(complement(complement(complement(complement(complement(unordered_pair(u,u))))))) = null_class
    | member(y,universal_class) ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_82,c_0_83]),c_0_73]) ).

cnf(c_0_88,plain,
    subclass(intersection(intersection(X1,X2),X3),X1),
    inference(spm,[status(thm)],[c_0_40,c_0_84]) ).

cnf(c_0_89,plain,
    subclass(complement(complement(X1)),intersection(X1,complement(complement(X1)))),
    inference(spm,[status(thm)],[c_0_62,c_0_77]) ).

cnf(c_0_90,negated_conjecture,
    ( member(X1,intersection(universal_class,complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(intersection(complement(unordered_pair(u,u)),universal_class))))))))
    | ~ member(X1,universal_class) ),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_85,c_0_65]),c_0_65]) ).

cnf(c_0_91,negated_conjecture,
    ( complement(complement(complement(complement(complement(unordered_pair(u,u)))))) = universal_class
    | member(y,universal_class) ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_86,c_0_87]),c_0_65]),c_0_65]),c_0_19])]) ).

cnf(c_0_92,plain,
    ( member(X1,X2)
    | ~ member(X1,intersection(intersection(X2,X3),X4)) ),
    inference(spm,[status(thm)],[c_0_18,c_0_88]) ).

cnf(c_0_93,plain,
    intersection(X1,complement(complement(X1))) = complement(complement(X1)),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_46,c_0_89]),c_0_47])]) ).

cnf(c_0_94,negated_conjecture,
    ( member(X1,complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(intersection(complement(unordered_pair(u,u)),universal_class)))))))
    | ~ member(X1,universal_class) ),
    inference(rw,[status(thm)],[c_0_90,c_0_73]) ).

cnf(c_0_95,negated_conjecture,
    ( complement(complement(complement(unordered_pair(u,u)))) = universal_class
    | member(y,universal_class) ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_86,c_0_91]),c_0_19])]) ).

cnf(c_0_96,plain,
    ( member(X1,X2)
    | ~ member(X1,complement(complement(intersection(X2,X3)))) ),
    inference(spm,[status(thm)],[c_0_92,c_0_93]) ).

cnf(c_0_97,negated_conjecture,
    ( member(X1,complement(complement(intersection(complement(unordered_pair(y,y)),complement(complement(complement(unordered_pair(u,u))))))))
    | ~ member(X1,universal_class) ),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_94,c_0_79]),c_0_73]) ).

cnf(c_0_98,negated_conjecture,
    ( complement(unordered_pair(u,u)) = universal_class
    | member(y,universal_class) ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_86,c_0_95]),c_0_19])]) ).

cnf(c_0_99,negated_conjecture,
    ( member(X1,complement(unordered_pair(y,y)))
    | ~ member(X1,universal_class) ),
    inference(spm,[status(thm)],[c_0_96,c_0_97]) ).

cnf(c_0_100,negated_conjecture,
    ( member(y,universal_class)
    | ~ member(X1,unordered_pair(u,u)) ),
    inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_20,c_0_98]),c_0_22]) ).

cnf(c_0_101,axiom,
    ( member(X1,unordered_pair(X1,X2))
    | ~ member(X1,universal_class) ),
    unordered_pair2 ).

cnf(c_0_102,negated_conjecture,
    member(u,universal_class),
    prove_corollary_4_to_member_of_triple_1 ).

cnf(c_0_103,negated_conjecture,
    ~ member(X1,unordered_pair(y,y)),
    inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_20,c_0_99]),c_0_22]) ).

cnf(c_0_104,negated_conjecture,
    member(y,universal_class),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_100,c_0_101]),c_0_102])]) ).

cnf(c_0_105,negated_conjecture,
    $false,
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_103,c_0_101]),c_0_104])]),
    [proof] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.21  % Problem    : SET136-6 : TPTP v9.2.1. Bugfixed v2.1.0.
% 0.03/0.21  % Command    : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d
% 0.12/0.46  % Computer : n018.cluster.edu
% 0.12/0.46  % Model    : x86_64 x86_64
% 0.12/0.46  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.46  % Memory   : 8042.1875MB
% 0.12/0.46  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.46  % CPULimit   : 300
% 0.12/0.46  % WCLimit    : 300
% 0.12/0.46  % DateTime   : Tue May  5 02:12:47 EDT 2026
% 0.12/0.47  % CPUTime    : 
% 0.12/0.49  % start to proof: theBenchmark
% 23.15/16.41  % Version  : CSE_E---1.7
% 23.15/16.41  % Problem  : theBenchmark.p
% 23.15/16.41  % SZS status Unsatisfiable for theBenchmark.p
% 23.15/16.41  % SZS output start CNFRefutation
% See solution above
% 23.15/16.49  % Total time : 12.459s
%------------------------------------------------------------------------------