%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : SET348-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n005.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Thu Sep 24 02:11:57 PM UTC 2026
% Result : Unsatisfiable 270.85s 34.89s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : SET348-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.07 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.17/0.44 % Computer : n005.cluster.edu
% 0.17/0.44 % Model : x86_64 x86_64
% 0.17/0.44 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.17/0.44 % Memory : 8046.5625MB
% 0.17/0.44 % OS : Linux 6.8.0-71-generic
% 0.17/0.44 % CPULimit : 300
% 0.17/0.44 % WCLimit : 300
% 0.17/0.44 % DateTime : Mon Sep 21 05:10:03 UTC 2026
% 0.17/0.44 % CPUTime :
% 0.17/0.46 % Drodi V4.1.1
% 270.85/34.89 % Refutation found
% 270.85/34.89 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 270.85/34.89 % SZS output start CNFRefutation for theBenchmark
% 270.85/34.89 fof(f1,axiom,(
% 270.85/34.89 (![X,Y,U]: (( ~ subclass(X,Y)| ~ member(U,X)| member(U,Y) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f2,axiom,(
% 270.85/34.89 (![X,Y]: (( member(not_subclass_element(X,Y),X)| subclass(X,Y) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f3,axiom,(
% 270.85/34.89 (![X,Y]: (( ~ member(not_subclass_element(X,Y),Y)| subclass(X,Y) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f4,axiom,(
% 270.85/34.89 (![X]: (subclass(X,universal_class) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f7,axiom,(
% 270.85/34.89 (![X,Y]: (( ~ subclass(X,Y)| ~ subclass(Y,X)| X = Y ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f10,axiom,(
% 270.85/34.89 (![Y,X]: (( ~ member(Y,universal_class)| member(Y,unordered_pair(X,Y)) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f11,axiom,(
% 270.85/34.89 (![X,Y]: (member(unordered_pair(X,Y),universal_class) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f12,axiom,(
% 270.85/34.89 (![X]: (unordered_pair(X,X) = singleton(X) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f16,axiom,(
% 270.85/34.89 (![U,X,V,Y]: (( ~ member(U,X)| ~ member(V,Y)| member(ordered_pair(U,V),cross_product(X,Y)) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f18,axiom,(
% 270.85/34.89 subclass(element_relation,cross_product(universal_class,universal_class)) ),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f20,axiom,(
% 270.85/34.89 (![X,Y]: (( ~ member(ordered_pair(X,Y),cross_product(universal_class,universal_class))| ~ member(X,Y)| member(ordered_pair(X,Y),element_relation) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f21,axiom,(
% 270.85/34.89 (![Z,X,Y]: (( ~ member(Z,intersection(X,Y))| member(Z,X) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f23,axiom,(
% 270.85/34.89 (![Z,X,Y]: (( ~ member(Z,X)| ~ member(Z,Y)| member(Z,intersection(X,Y)) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f28,axiom,(
% 270.85/34.89 (![Xr,X,Y]: (intersection(Xr,cross_product(X,Y)) = restrict(Xr,X,Y) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f29,axiom,(
% 270.85/34.89 (![X,Y,Xr]: (intersection(cross_product(X,Y),Xr) = restrict(Xr,X,Y) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f30,axiom,(
% 270.85/34.89 (![X,Z]: (( restrict(X,singleton(Z),universal_class) != null_class| ~ member(Z,domain_of(X)) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f31,axiom,(
% 270.85/34.89 (![Z,X]: (( ~ member(Z,universal_class)| restrict(X,singleton(Z),universal_class) = null_class| member(Z,domain_of(X)) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f53,axiom,(
% 270.85/34.89 (![X]: (domain_of(restrict(element_relation,universal_class,X)) = sum_class(X) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f66,axiom,(
% 270.85/34.89 (![X]: (( X = null_class| member(regular(X),X) ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f67,axiom,(
% 270.85/34.89 (![X]: (( X = null_class| intersection(X,regular(X)) = null_class ) ))),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f113,negated_conjecture,(
% 270.85/34.89 sum_class(universal_class) != universal_class ),
% 270.85/34.89 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 270.85/34.89 fof(f114,plain,(
% 270.85/34.89 ![Y,U]: ((![X]: (~subclass(X,Y)|~member(U,X)))|member(U,Y))),
% 270.85/34.89 inference(miniscoping,[status(thm)],[f1])).
% 270.85/34.89 fof(f115,plain,(
% 270.85/34.89 ![X0,X1,X2]: (~subclass(X0,X1)|~member(X2,X0)|member(X2,X1))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f114])).
% 270.85/34.89 fof(f116,plain,(
% 270.85/34.89 ![X0,X1]: (member(not_subclass_element(X0,X1),X0)|subclass(X0,X1))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f2])).
% 270.85/34.89 fof(f117,plain,(
% 270.85/34.89 ![X0,X1]: (~member(not_subclass_element(X0,X1),X1)|subclass(X0,X1))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f3])).
% 270.85/34.89 fof(f118,plain,(
% 270.85/34.89 ![X0]: (subclass(X0,universal_class))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f4])).
% 270.85/34.89 fof(f121,plain,(
% 270.85/34.89 ![X0,X1]: (~subclass(X0,X1)|~subclass(X1,X0)|X0=X1)),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f7])).
% 270.85/34.89 fof(f126,plain,(
% 270.85/34.89 ![Y]: (~member(Y,universal_class)|(![X]: member(Y,unordered_pair(X,Y))))),
% 270.85/34.89 inference(miniscoping,[status(thm)],[f10])).
% 270.85/34.89 fof(f127,plain,(
% 270.85/34.89 ![X0,X1]: (~member(X0,universal_class)|member(X0,unordered_pair(X1,X0)))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f126])).
% 270.85/34.89 fof(f128,plain,(
% 270.85/34.89 ![X0,X1]: (member(unordered_pair(X0,X1),universal_class))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f11])).
% 270.85/34.89 fof(f129,plain,(
% 270.85/34.89 ![X0]: (unordered_pair(X0,X0)=singleton(X0))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f12])).
% 270.85/34.89 fof(f135,plain,(
% 270.85/34.89 ![X0,X1,X2,X3]: (~member(X0,X1)|~member(X2,X3)|member(ordered_pair(X0,X2),cross_product(X1,X3)))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f16])).
% 270.85/34.89 fof(f138,plain,(
% 270.85/34.89 subclass(element_relation,cross_product(universal_class,universal_class))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f18])).
% 270.85/34.89 fof(f140,plain,(
% 270.85/34.89 ![X0,X1]: (~member(ordered_pair(X0,X1),cross_product(universal_class,universal_class))|~member(X0,X1)|member(ordered_pair(X0,X1),element_relation))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f20])).
% 270.85/34.89 fof(f141,plain,(
% 270.85/34.89 ![Z,X]: ((![Y]: ~member(Z,intersection(X,Y)))|member(Z,X))),
% 270.85/34.89 inference(miniscoping,[status(thm)],[f21])).
% 270.85/34.89 fof(f142,plain,(
% 270.85/34.89 ![X0,X1,X2]: (~member(X0,intersection(X1,X2))|member(X0,X1))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f141])).
% 270.85/34.89 fof(f145,plain,(
% 270.85/34.89 ![X0,X1,X2]: (~member(X0,X1)|~member(X0,X2)|member(X0,intersection(X1,X2)))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f23])).
% 270.85/34.89 fof(f150,plain,(
% 270.85/34.89 ![X0,X1,X2]: (intersection(X0,cross_product(X1,X2))=restrict(X0,X1,X2))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f28])).
% 270.85/34.89 fof(f151,plain,(
% 270.85/34.89 ![X0,X1,X2]: (intersection(cross_product(X0,X1),X2)=restrict(X2,X0,X1))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f29])).
% 270.85/34.89 fof(f152,plain,(
% 270.85/34.89 ![X0,X1]: (~restrict(X0,singleton(X1),universal_class)=null_class|~member(X1,domain_of(X0)))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f30])).
% 270.85/34.89 fof(f153,plain,(
% 270.85/34.89 ![X0,X1]: (~member(X0,universal_class)|restrict(X1,singleton(X0),universal_class)=null_class|member(X0,domain_of(X1)))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f31])).
% 270.85/34.89 fof(f175,plain,(
% 270.85/34.89 ![X0]: (domain_of(restrict(element_relation,universal_class,X0))=sum_class(X0))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f53])).
% 270.85/34.89 fof(f188,plain,(
% 270.85/34.89 ![X0]: (X0=null_class|member(regular(X0),X0))),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f66])).
% 270.85/34.89 fof(f189,plain,(
% 270.85/34.89 ![X0]: (X0=null_class|intersection(X0,regular(X0))=null_class)),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f67])).
% 270.85/34.89 fof(f245,plain,(
% 270.85/34.89 ~sum_class(universal_class)=universal_class),
% 270.85/34.89 inference(cnf_transformation,[status(thm)],[f113])).
% 270.85/34.89 fof(f253,plain,(
% 270.85/34.89 ![X0,X1]: (~member(X0,X1)|member(X0,universal_class))),
% 270.85/34.89 inference(resolution,[status(thm)],[f118,f115])).
% 270.85/34.89 fof(f255,plain,(
% 270.85/34.89 ![X0]: (~subclass(universal_class,X0)|universal_class=X0)),
% 270.85/34.89 inference(resolution,[status(thm)],[f121,f118])).
% 270.85/34.89 fof(f260,plain,(
% 270.85/34.89 ![X0]: (member(singleton(X0),universal_class))),
% 270.85/34.89 inference(paramodulation,[status(thm)],[f129,f128])).
% 270.85/34.89 fof(f261,plain,(
% 270.85/34.89 ![X0]: (~member(X0,universal_class)|member(X0,singleton(X0)))),
% 270.85/34.89 inference(paramodulation,[status(thm)],[f129,f127])).
% 270.85/34.89 fof(f277,plain,(
% 270.85/34.89 ![X0]: (~member(X0,element_relation)|member(X0,cross_product(universal_class,universal_class)))),
% 270.85/34.89 inference(resolution,[status(thm)],[f138,f115])).
% 270.85/34.89 fof(f278,plain,(
% 270.85/34.89 ![X0,X1]: (~member(X0,X1)|member(ordered_pair(X0,X1),element_relation)|~member(X0,universal_class)|~member(X1,universal_class))),
% 270.85/34.89 inference(resolution,[status(thm)],[f140,f135])).
% 270.85/34.89 fof(f279,plain,(
% 270.85/34.89 ![X0,X1,X2]: (member(not_subclass_element(intersection(X0,X1),X2),X0)|subclass(intersection(X0,X1),X2))),
% 270.85/34.89 inference(resolution,[status(thm)],[f142,f116])).
% 270.85/34.89 fof(f281,plain,(
% 270.85/34.89 ![X0,X1,X2]: (~member(not_subclass_element(X0,intersection(X1,X2)),X1)|~member(not_subclass_element(X0,intersection(X1,X2)),X2)|subclass(X0,intersection(X1,X2)))),
% 270.85/34.89 inference(resolution,[status(thm)],[f145,f117])).
% 270.85/34.89 fof(f299,plain,(
% 270.85/34.89 ![X0,X1,X2,X3]: (~member(X0,X1)|~member(X0,cross_product(X2,X3))|member(X0,restrict(X1,X2,X3)))),
% 270.85/34.89 inference(paramodulation,[status(thm)],[f150,f145])).
% 270.85/34.89 fof(f311,plain,(
% 270.85/34.89 ![X0,X1]: (~member(X0,universal_class)|restrict(restrict(element_relation,universal_class,X1),singleton(X0),universal_class)=null_class|member(X0,sum_class(X1)))),
% 270.85/34.89 inference(paramodulation,[status(thm)],[f175,f153])).
% 270.85/34.89 fof(f317,plain,(
% 270.85/34.89 ![X0,X1]: (~member(not_subclass_element(X0,sum_class(X1)),universal_class)|restrict(restrict(element_relation,universal_class,X1),singleton(not_subclass_element(X0,sum_class(X1))),universal_class)=null_class|subclass(X0,sum_class(X1)))),
% 270.85/34.89 inference(resolution,[status(thm)],[f311,f117])).
% 270.85/34.89 fof(f319,plain,(
% 270.85/34.89 ![X0]: (restrict(restrict(element_relation,universal_class,X0),singleton(not_subclass_element(universal_class,sum_class(X0))),universal_class)=null_class|subclass(universal_class,sum_class(X0))|subclass(universal_class,sum_class(X0)))),
% 270.85/34.89 inference(resolution,[status(thm)],[f317,f116])).
% 270.85/34.89 fof(f321,plain,(
% 270.85/34.89 ![X0]: (restrict(restrict(element_relation,universal_class,X0),singleton(not_subclass_element(universal_class,sum_class(X0))),universal_class)=null_class|subclass(universal_class,sum_class(X0)))),
% 270.85/34.89 inference(duplicate_literals_removal,[status(thm)],[f319])).
% 270.85/34.89 fof(f325,plain,(
% 270.85/34.89 ![X0]: (restrict(restrict(element_relation,universal_class,X0),singleton(not_subclass_element(universal_class,sum_class(X0))),universal_class)=null_class|~subclass(sum_class(X0),universal_class)|sum_class(X0)=universal_class)),
% 270.85/34.89 inference(resolution,[status(thm)],[f321,f121])).
% 270.85/34.89 fof(f328,plain,(
% 270.85/34.89 ![X0]: (restrict(restrict(element_relation,universal_class,X0),singleton(not_subclass_element(universal_class,sum_class(X0))),universal_class)=null_class|sum_class(X0)=universal_class)),
% 270.85/34.89 inference(forward_subsumption_resolution,[status(thm)],[f325,f118])).
% 270.85/34.89 fof(f1193,plain,(
% 270.85/34.89 ![X0]: (member(not_subclass_element(element_relation,X0),cross_product(universal_class,universal_class))|subclass(element_relation,X0))),
% 270.85/34.89 inference(resolution,[status(thm)],[f277,f116])).
% 270.85/34.89 fof(f1194,plain,(
% 270.85/34.89 ![X0,X1]: (~member(X0,X1)|member(ordered_pair(X0,X1),element_relation)|~member(X1,universal_class))),
% 270.85/34.89 inference(forward_subsumption_resolution,[status(thm)],[f278,f253])).
% 270.85/34.89 fof(f1200,plain,(
% 270.85/34.89 ![X0,X1]: (subclass(intersection(X0,X1),X0)|subclass(intersection(X0,X1),X0))),
% 270.85/34.89 inference(resolution,[status(thm)],[f279,f117])).
% 270.85/34.89 fof(f1241,plain,(
% 270.85/34.89 ![X0,X1]: (subclass(intersection(X0,X1),X0))),
% 270.85/34.89 inference(duplicate_literals_removal,[status(thm)],[f1200])).
% 270.85/34.89 fof(f1326,plain,(
% 270.85/34.89 ![X0,X1]: (~member(not_subclass_element(X0,intersection(X1,X0)),X1)|subclass(X0,intersection(X1,X0))|subclass(X0,intersection(X1,X0)))),
% 270.85/34.89 inference(resolution,[status(thm)],[f281,f116])).
% 270.85/34.89 fof(f1359,plain,(
% 270.85/34.89 ![X0,X1]: (~member(not_subclass_element(X0,intersection(X1,X0)),X1)|subclass(X0,intersection(X1,X0)))),
% 270.85/34.89 inference(duplicate_literals_removal,[status(thm)],[f1326])).
% 270.85/34.89 fof(f1529,plain,(
% 270.85/34.89 ![X0]: (subclass(null_class,X0)|X0=null_class)),
% 270.85/34.89 inference(paramodulation,[status(thm)],[f189,f1241])).
% 270.85/34.89 fof(f1530,plain,(
% 270.85/34.89 ![X0,X1,X2]: (subclass(restrict(X0,X1,X2),X0))),
% 270.85/34.89 inference(paramodulation,[status(thm)],[f150,f1241])).
% 270.85/34.89 fof(f1977,plain,(
% 270.85/34.89 ![X0,X1,X2,X3,X4]: (~member(ordered_pair(X0,X1),X2)|member(ordered_pair(X0,X1),restrict(X2,X3,X4))|~member(X0,X3)|~member(X1,X4))),
% 270.85/34.89 inference(resolution,[status(thm)],[f299,f135])).
% 270.85/34.89 fof(f2235,plain,(
% 270.85/34.89 ![X0]: (X0=null_class|~subclass(X0,null_class)|X0=null_class)),
% 270.85/34.89 inference(resolution,[status(thm)],[f1529,f121])).
% 270.85/34.89 fof(f2237,plain,(
% 270.85/34.89 ![X0]: (X0=null_class|~subclass(X0,null_class))),
% 270.85/34.89 inference(duplicate_literals_removal,[status(thm)],[f2235])).
% 270.85/34.89 fof(f2442,plain,(
% 270.85/34.89 ![X0,X1]: (restrict(null_class,X0,X1)=null_class)),
% 270.85/34.89 inference(resolution,[status(thm)],[f2237,f1530])).
% 270.85/34.89 fof(f2734,plain,(
% 270.85/34.89 ![X0]: (~member(X0,domain_of(null_class)))),
% 270.85/34.89 inference(resolution,[status(thm)],[f2442,f152])).
% 270.85/34.89 fof(f2746,plain,(
% 270.85/34.89 domain_of(null_class)=null_class),
% 270.85/34.89 inference(resolution,[status(thm)],[f2734,f188])).
% 270.85/34.89 fof(f2991,plain,(
% 270.85/34.89 ![X0]: (~member(X0,null_class))),
% 270.85/34.89 inference(backward_demodulation,[status(thm)],[f2746,f2734])).
% 270.85/34.89 fof(f16029,plain,(
% 270.85/34.89 subclass(element_relation,intersection(cross_product(universal_class,universal_class),element_relation))|subclass(element_relation,intersection(cross_product(universal_class,universal_class),element_relation))),
% 270.85/34.89 inference(resolution,[status(thm)],[f1359,f1193])).
% 270.85/34.89 fof(f16130,plain,(
% 270.85/34.89 subclass(element_relation,restrict(element_relation,universal_class,universal_class))|subclass(element_relation,intersection(cross_product(universal_class,universal_class),element_relation))),
% 270.85/34.89 inference(forward_demodulation,[status(thm)],[f151,f16029])).
% 270.85/34.89 fof(f16131,plain,(
% 270.85/34.89 subclass(element_relation,restrict(element_relation,universal_class,universal_class))|subclass(element_relation,restrict(element_relation,universal_class,universal_class))),
% 270.85/34.89 inference(forward_demodulation,[status(thm)],[f151,f16130])).
% 270.85/34.89 fof(f16132,plain,(
% 270.85/34.89 subclass(element_relation,restrict(element_relation,universal_class,universal_class))),
% 270.85/34.89 inference(duplicate_literals_removal,[status(thm)],[f16131])).
% 270.85/34.89 fof(f89447,plain,(
% 270.85/34.89 ~subclass(restrict(element_relation,universal_class,universal_class),element_relation)|restrict(element_relation,universal_class,universal_class)=element_relation),
% 270.85/34.89 inference(resolution,[status(thm)],[f16132,f121])).
% 270.85/34.89 fof(f89449,plain,(
% 270.85/34.89 restrict(element_relation,universal_class,universal_class)=element_relation),
% 270.85/34.89 inference(forward_subsumption_resolution,[status(thm)],[f89447,f1530])).
% 270.85/34.89 fof(f89684,plain,(
% 270.85/34.89 restrict(element_relation,singleton(not_subclass_element(universal_class,sum_class(universal_class))),universal_class)=null_class|sum_class(universal_class)=universal_class),
% 270.85/34.89 inference(paramodulation,[status(thm)],[f89449,f328])).
% 270.85/34.89 fof(f89685,plain,(
% 270.85/34.89 domain_of(element_relation)=sum_class(universal_class)),
% 270.85/34.89 inference(paramodulation,[status(thm)],[f89449,f175])).
% 270.85/34.89 fof(f90842,plain,(
% 270.85/34.89 restrict(element_relation,singleton(not_subclass_element(universal_class,sum_class(universal_class))),universal_class)=null_class),
% 270.85/34.89 inference(forward_subsumption_resolution,[status(thm)],[f89684,f245])).
% 270.85/34.89 fof(f90886,plain,(
% 270.85/34.89 ~domain_of(element_relation)=universal_class),
% 270.85/34.89 inference(backward_demodulation,[status(thm)],[f89685,f245])).
% 270.85/34.89 fof(f93659,plain,(
% 270.85/34.89 restrict(element_relation,singleton(not_subclass_element(universal_class,domain_of(element_relation))),universal_class)=null_class),
% 270.85/34.89 inference(forward_demodulation,[status(thm)],[f89685,f90842])).
% 270.85/34.89 fof(f93681,plain,(
% 270.85/34.89 ![X0,X1]: (~member(ordered_pair(X0,X1),element_relation)|member(ordered_pair(X0,X1),null_class)|~member(X0,singleton(not_subclass_element(universal_class,domain_of(element_relation))))|~member(X1,universal_class))),
% 270.85/34.89 inference(paramodulation,[status(thm)],[f93659,f1977])).
% 270.85/34.89 fof(f93757,plain,(
% 270.85/34.89 ![X0,X1]: (~member(ordered_pair(X0,X1),element_relation)|~member(X0,singleton(not_subclass_element(universal_class,domain_of(element_relation))))|~member(X1,universal_class))),
% 270.85/34.89 inference(forward_subsumption_resolution,[status(thm)],[f93681,f2991])).
% 270.85/34.89 fof(f105945,plain,(
% 270.85/34.89 ![X0,X1]: (~member(X0,singleton(not_subclass_element(universal_class,domain_of(element_relation))))|~member(X1,universal_class)|~member(X0,X1)|~member(X1,universal_class))),
% 270.85/34.89 inference(resolution,[status(thm)],[f93757,f1194])).
% 270.85/34.89 fof(f105953,plain,(
% 270.85/34.89 ![X0,X1]: (~member(X0,singleton(not_subclass_element(universal_class,domain_of(element_relation))))|~member(X1,universal_class)|~member(X0,X1))),
% 270.85/34.89 inference(duplicate_literals_removal,[status(thm)],[f105945])).
% 270.85/34.89 fof(f109103,plain,(
% 270.85/34.89 ![X0]: (~member(X0,universal_class)|~member(not_subclass_element(universal_class,domain_of(element_relation)),X0)|~member(not_subclass_element(universal_class,domain_of(element_relation)),universal_class))),
% 270.85/34.89 inference(resolution,[status(thm)],[f105953,f261])).
% 270.85/34.89 fof(f109105,plain,(
% 270.85/34.89 ![X0]: (~member(X0,universal_class)|~member(not_subclass_element(universal_class,domain_of(element_relation)),X0))),
% 270.85/34.89 inference(forward_subsumption_resolution,[status(thm)],[f109103,f253])).
% 270.85/34.89 fof(f110768,plain,(
% 270.85/34.89 ~member(singleton(not_subclass_element(universal_class,domain_of(element_relation))),universal_class)|~member(not_subclass_element(universal_class,domain_of(element_relation)),universal_class)),
% 170.59/35.10 inference(resolution,[status(thm)],[f109105,f261])).
% 170.59/35.10 fof(f110786,plain,(
% 170.59/35.10 ~member(not_subclass_element(universal_class,domain_of(element_relation)),universal_class)),
% 170.59/35.10 inference(forward_subsumption_resolution,[status(thm)],[f110768,f260])).
% 170.59/35.10 fof(f115120,plain,(
% 170.59/35.10 subclass(universal_class,domain_of(element_relation))),
% 170.59/35.10 inference(resolution,[status(thm)],[f110786,f116])).
% 170.59/35.10 fof(f115561,plain,(
% 170.59/35.10 universal_class=domain_of(element_relation)),
% 170.59/35.10 inference(resolution,[status(thm)],[f115120,f255])).
% 170.59/35.10 fof(f115564,plain,(
% 170.59/35.10 $false),
% 170.59/35.10 inference(forward_subsumption_resolution,[status(thm)],[f115561,f90886])).
% 170.59/35.10 % SZS output end CNFRefutation for theBenchmark.p
% 25.75/35.17 % Elapsed time: 34.686606 seconds
% 25.75/35.17 % CPU time: 273.873610 seconds
% 25.75/35.17 % Total memory used: 1.384 GB
% 25.75/35.17 % Net memory used: 1.237 GB
%------------------------------------------------------------------------------