%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : SET517-6 : 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 02:12:08 PM UTC 2026
% Result : Unsatisfiable 1.34s 0.64s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET517-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.04 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.09/0.36 % Computer : n005.cluster.edu
% 0.09/0.36 % Model : x86_64 x86_64
% 0.09/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.36 % Memory : 8046.5625MB
% 0.09/0.36 % OS : Linux 6.8.0-71-generic
% 0.09/0.36 % CPULimit : 300
% 0.09/0.36 % WCLimit : 300
% 0.09/0.36 % DateTime : Mon Sep 21 05:22:48 UTC 2026
% 0.09/0.37 % CPUTime :
% 0.09/0.38 % Drodi V4.1.1
% 1.34/0.64 % Refutation found
% 1.34/0.64 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 1.34/0.64 % SZS output start CNFRefutation for theBenchmark
% 1.34/0.64 fof(f8,axiom,(
% 1.34/0.64 (![U,X,Y]: (( ~ member(U,unordered_pair(X,Y))| U = X| U = Y ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f9,axiom,(
% 1.34/0.64 (![X,Y]: (( ~ member(X,universal_class)| member(X,unordered_pair(X,Y)) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f11,axiom,(
% 1.34/0.64 (![X,Y]: (member(unordered_pair(X,Y),universal_class) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f12,axiom,(
% 1.34/0.64 (![X]: (unordered_pair(X,X) = singleton(X) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f13,axiom,(
% 1.34/0.64 (![X,Y]: (unordered_pair(singleton(X),unordered_pair(X,singleton(Y))) = ordered_pair(X,Y) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f16,axiom,(
% 1.34/0.64 (![U,X,V,Y]: (( ~ member(U,X)| ~ member(V,Y)| member(ordered_pair(U,V),cross_product(X,Y)) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f19,axiom,(
% 1.34/0.64 (![X,Y]: (( ~ member(ordered_pair(X,Y),element_relation)| member(X,Y) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f20,axiom,(
% 1.34/0.64 (![X,Y]: (( ~ member(ordered_pair(X,Y),cross_product(universal_class,universal_class))| ~ member(X,Y)| member(ordered_pair(X,Y),element_relation) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f21,axiom,(
% 1.34/0.64 (![Z,X,Y]: (( ~ member(Z,intersection(X,Y))| member(Z,X) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f23,axiom,(
% 1.34/0.64 (![Z,X,Y]: (( ~ member(Z,X)| ~ member(Z,Y)| member(Z,intersection(X,Y)) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f24,axiom,(
% 1.34/0.64 (![Z,X]: (( ~ member(Z,complement(X))| ~ member(Z,X) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f25,axiom,(
% 1.34/0.64 (![Z,X]: (( ~ member(Z,universal_class)| member(Z,complement(X))| member(Z,X) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f30,axiom,(
% 1.34/0.64 (![X,Z]: (( restrict(X,singleton(Z),universal_class) != null_class| ~ member(Z,domain_of(X)) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f66,axiom,(
% 1.34/0.64 (![X]: (( X = null_class| member(regular(X),X) ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f67,axiom,(
% 1.34/0.64 (![X]: (( X = null_class| intersection(X,regular(X)) = null_class ) ))),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f113,negated_conjecture,(
% 1.34/0.64 singleton(member_of(x)) = x ),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f114,negated_conjecture,(
% 1.34/0.64 member_of(x) = x ),
% 1.34/0.64 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 1.34/0.64 fof(f123,plain,(
% 1.34/0.64 ![U,Y]: ((![X]: (~member(U,unordered_pair(X,Y))|U=X))|U=Y)),
% 1.34/0.64 inference(miniscoping,[status(thm)],[f8])).
% 1.34/0.64 fof(f124,plain,(
% 1.34/0.64 ![X0,X1,X2]: (~member(X0,unordered_pair(X1,X2))|X0=X1|X0=X2)),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f123])).
% 1.34/0.64 fof(f125,plain,(
% 1.34/0.64 ![X]: (~member(X,universal_class)|(![Y]: member(X,unordered_pair(X,Y))))),
% 1.34/0.64 inference(miniscoping,[status(thm)],[f9])).
% 1.34/0.64 fof(f126,plain,(
% 1.34/0.64 ![X0,X1]: (~member(X0,universal_class)|member(X0,unordered_pair(X0,X1)))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f125])).
% 1.34/0.64 fof(f129,plain,(
% 1.34/0.64 ![X0,X1]: (member(unordered_pair(X0,X1),universal_class))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f11])).
% 1.34/0.64 fof(f130,plain,(
% 1.34/0.64 ![X0]: (unordered_pair(X0,X0)=singleton(X0))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f12])).
% 1.34/0.64 fof(f131,plain,(
% 1.34/0.64 ![X0,X1]: (unordered_pair(singleton(X0),unordered_pair(X0,singleton(X1)))=ordered_pair(X0,X1))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f13])).
% 1.34/0.64 fof(f136,plain,(
% 1.34/0.64 ![X0,X1,X2,X3]: (~member(X0,X1)|~member(X2,X3)|member(ordered_pair(X0,X2),cross_product(X1,X3)))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f16])).
% 1.34/0.64 fof(f140,plain,(
% 1.34/0.64 ![X0,X1]: (~member(ordered_pair(X0,X1),element_relation)|member(X0,X1))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f19])).
% 1.34/0.64 fof(f141,plain,(
% 1.34/0.64 ![X0,X1]: (~member(ordered_pair(X0,X1),cross_product(universal_class,universal_class))|~member(X0,X1)|member(ordered_pair(X0,X1),element_relation))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f20])).
% 1.34/0.64 fof(f142,plain,(
% 1.34/0.64 ![Z,X]: ((![Y]: ~member(Z,intersection(X,Y)))|member(Z,X))),
% 1.34/0.64 inference(miniscoping,[status(thm)],[f21])).
% 1.34/0.64 fof(f143,plain,(
% 1.34/0.64 ![X0,X1,X2]: (~member(X0,intersection(X1,X2))|member(X0,X1))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f142])).
% 1.34/0.64 fof(f146,plain,(
% 1.34/0.64 ![X0,X1,X2]: (~member(X0,X1)|~member(X0,X2)|member(X0,intersection(X1,X2)))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f23])).
% 1.34/0.64 fof(f147,plain,(
% 1.34/0.64 ![X0,X1]: (~member(X0,complement(X1))|~member(X0,X1))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f24])).
% 1.34/0.64 fof(f148,plain,(
% 1.34/0.64 ![X0,X1]: (~member(X0,universal_class)|member(X0,complement(X1))|member(X0,X1))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f25])).
% 1.34/0.64 fof(f153,plain,(
% 1.34/0.64 ![X0,X1]: (~restrict(X0,singleton(X1),universal_class)=null_class|~member(X1,domain_of(X0)))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f30])).
% 1.34/0.64 fof(f189,plain,(
% 1.34/0.64 ![X0]: (X0=null_class|member(regular(X0),X0))),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f66])).
% 1.34/0.64 fof(f190,plain,(
% 1.34/0.64 ![X0]: (X0=null_class|intersection(X0,regular(X0))=null_class)),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f67])).
% 1.34/0.64 fof(f246,plain,(
% 1.34/0.64 singleton(member_of(x))=x),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f113])).
% 1.34/0.64 fof(f247,plain,(
% 1.34/0.64 member_of(x)=x),
% 1.34/0.64 inference(cnf_transformation,[status(thm)],[f114])).
% 1.34/0.64 fof(f255,plain,(
% 1.34/0.64 singleton(x)=x),
% 1.34/0.64 inference(backward_demodulation,[status(thm)],[f247,f246])).
% 1.34/0.64 fof(f256,plain,(
% 1.34/0.64 ![X0]: (member(singleton(X0),universal_class))),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f130,f129])).
% 1.34/0.64 fof(f257,plain,(
% 1.34/0.64 member(x,universal_class)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f255,f256])).
% 1.34/0.64 fof(f269,plain,(
% 1.34/0.64 ![X0,X1]: (~member(X0,singleton(X1))|X0=X1|X0=X1)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f130,f124])).
% 1.34/0.64 fof(f270,plain,(
% 1.34/0.64 ![X0,X1]: (~member(X0,singleton(X1))|X0=X1)),
% 1.34/0.64 inference(duplicate_literals_removal,[status(thm)],[f269])).
% 1.34/0.64 fof(f272,plain,(
% 1.34/0.64 ![X0]: (~member(X0,universal_class)|member(X0,singleton(X0)))),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f130,f126])).
% 1.34/0.64 fof(f279,plain,(
% 1.34/0.64 ![X0]: (~member(X0,x)|X0=x)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f255,f270])).
% 1.34/0.64 fof(f280,plain,(
% 1.34/0.64 regular(x)=x|x=null_class),
% 1.34/0.64 inference(resolution,[status(thm)],[f279,f189])).
% 1.34/0.64 fof(f299,plain,(
% 1.34/0.64 ![X0]: (unordered_pair(singleton(X0),unordered_pair(X0,x))=ordered_pair(X0,x))),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f255,f131])).
% 1.34/0.64 fof(f301,plain,(
% 1.34/0.64 ![X0,X1]: (~member(singleton(X0),universal_class)|member(singleton(X0),ordered_pair(X0,X1)))),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f131,f126])).
% 1.34/0.64 fof(f303,plain,(
% 1.34/0.64 ![X0,X1]: (member(ordered_pair(X0,X1),universal_class))),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f131,f129])).
% 1.34/0.64 fof(f306,plain,(
% 1.34/0.64 ![X0,X1]: (member(singleton(X0),ordered_pair(X0,X1)))),
% 1.34/0.64 inference(forward_subsumption_resolution,[status(thm)],[f301,f256])).
% 1.34/0.64 fof(f307,plain,(
% 1.34/0.64 ![X0]: (member(x,ordered_pair(x,X0)))),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f255,f306])).
% 1.34/0.64 fof(f329,plain,(
% 1.34/0.64 unordered_pair(x,unordered_pair(x,x))=ordered_pair(x,x)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f255,f299])).
% 1.34/0.64 fof(f335,plain,(
% 1.34/0.64 unordered_pair(x,singleton(x))=ordered_pair(x,x)),
% 1.34/0.64 inference(forward_demodulation,[status(thm)],[f130,f329])).
% 1.34/0.64 fof(f336,plain,(
% 1.34/0.64 unordered_pair(x,x)=ordered_pair(x,x)),
% 1.34/0.64 inference(forward_demodulation,[status(thm)],[f255,f335])).
% 1.34/0.64 fof(f337,plain,(
% 1.34/0.64 singleton(x)=ordered_pair(x,x)),
% 1.34/0.64 inference(forward_demodulation,[status(thm)],[f130,f336])).
% 1.34/0.64 fof(f338,plain,(
% 1.34/0.64 x=ordered_pair(x,x)),
% 1.34/0.64 inference(forward_demodulation,[status(thm)],[f255,f337])).
% 1.34/0.64 fof(f343,plain,(
% 1.34/0.64 member(x,x)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f338,f307])).
% 1.34/0.64 fof(f344,plain,(
% 1.34/0.64 ![X0,X1]: (~member(x,X0)|~member(x,X1)|member(x,cross_product(X0,X1)))),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f338,f136])).
% 1.34/0.64 fof(f424,plain,(
% 1.34/0.64 x=null_class|intersection(x,x)=null_class|x=null_class),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f280,f190])).
% 1.34/0.64 fof(f426,plain,(
% 1.34/0.64 ![X0,X1]: (~member(X0,null_class)|member(X0,X1)|X1=null_class)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f190,f143])).
% 1.34/0.64 fof(f427,plain,(
% 1.34/0.64 x=null_class|intersection(x,x)=null_class),
% 1.34/0.64 inference(duplicate_literals_removal,[status(thm)],[f424])).
% 1.34/0.64 fof(f455,plain,(
% 1.34/0.64 ~member(x,cross_product(universal_class,universal_class))|~member(x,x)|member(ordered_pair(x,x),element_relation)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f338,f141])).
% 1.34/0.64 fof(f456,plain,(
% 1.34/0.64 ~member(x,cross_product(universal_class,universal_class))|~member(x,x)|member(x,element_relation)),
% 1.34/0.64 inference(forward_demodulation,[status(thm)],[f338,f455])).
% 1.34/0.64 fof(f457,plain,(
% 1.34/0.64 ~member(x,cross_product(universal_class,universal_class))|member(x,element_relation)),
% 1.34/0.64 inference(forward_subsumption_resolution,[status(thm)],[f456,f343])).
% 1.34/0.64 fof(f468,plain,(
% 1.34/0.64 ~member(x,universal_class)|~member(x,universal_class)|member(x,element_relation)),
% 1.34/0.64 inference(resolution,[status(thm)],[f344,f457])).
% 1.34/0.64 fof(f473,plain,(
% 1.34/0.64 ~member(x,universal_class)|member(x,element_relation)),
% 1.34/0.64 inference(duplicate_literals_removal,[status(thm)],[f468])).
% 1.34/0.64 fof(f474,plain,(
% 1.34/0.64 member(x,element_relation)),
% 1.34/0.64 inference(forward_subsumption_resolution,[status(thm)],[f473,f257])).
% 1.34/0.64 fof(f577,plain,(
% 1.34/0.64 ![X0]: (~member(X0,x)|~member(X0,x)|member(X0,null_class)|x=null_class)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f427,f146])).
% 1.34/0.64 fof(f581,plain,(
% 1.34/0.64 ![X0]: (~member(X0,x)|member(X0,null_class)|x=null_class)),
% 1.34/0.64 inference(duplicate_literals_removal,[status(thm)],[f577])).
% 1.34/0.64 fof(f864,plain,(
% 1.34/0.64 ![X0,X1]: (member(X0,X1)|X1=null_class|~member(X0,x)|x=null_class)),
% 1.34/0.64 inference(resolution,[status(thm)],[f426,f581])).
% 1.34/0.64 fof(f954,plain,(
% 1.34/0.64 ![X0]: (member(x,X0)|X0=null_class|x=null_class)),
% 1.34/0.64 inference(resolution,[status(thm)],[f864,f343])).
% 1.34/0.64 fof(f975,plain,(
% 1.34/0.64 ![X0]: (complement(X0)=null_class|x=null_class|~member(x,X0))),
% 1.34/0.64 inference(resolution,[status(thm)],[f954,f147])).
% 1.34/0.64 fof(f979,plain,(
% 1.34/0.64 ![X0]: (singleton(X0)=null_class|x=null_class|x=X0)),
% 1.34/0.64 inference(resolution,[status(thm)],[f954,f270])).
% 1.34/0.64 fof(f1005,plain,(
% 1.34/0.64 ![X0]: (member(null_class,universal_class)|x=null_class|x=X0)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f979,f256])).
% 1.34/0.64 fof(f1184,plain,(
% 1.34/0.64 complement(x)=null_class|x=null_class),
% 1.34/0.64 inference(resolution,[status(thm)],[f975,f343])).
% 1.34/0.64 fof(f1229,plain,(
% 1.34/0.64 ![X0]: (~member(X0,universal_class)|member(X0,null_class)|member(X0,x)|x=null_class)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f1184,f148])).
% 1.34/0.64 fof(f1232,plain,(
% 1.34/0.64 ![X0]: (~member(X0,null_class)|~member(X0,x)|x=null_class)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f1184,f147])).
% 1.34/0.64 fof(f1234,plain,(
% 1.34/0.64 ![X0]: (~member(X0,universal_class)|member(X0,x)|x=null_class)),
% 1.34/0.64 inference(forward_subsumption_resolution,[status(thm)],[f1229,f426])).
% 1.34/0.64 fof(f1235,plain,(
% 1.34/0.64 ![X0]: (~member(X0,x)|x=null_class)),
% 1.34/0.64 inference(backward_subsumption_resolution,[status(thm)],[f581,f1238])).
% 1.34/0.64 fof(f1238,plain,(
% 1.34/0.64 ![X0]: (~member(X0,null_class)|x=null_class)),
% 1.34/0.64 inference(forward_subsumption_resolution,[status(thm)],[f1232,f426])).
% 1.34/0.64 fof(f1239,plain,(
% 1.34/0.64 ![X0]: (~member(X0,universal_class)|x=null_class)),
% 1.34/0.64 inference(backward_subsumption_resolution,[status(thm)],[f1234,f1235])).
% 1.34/0.64 fof(f1240,plain,(
% 1.34/0.64 ![X0]: (x=null_class|x=X0)),
% 1.34/0.64 inference(backward_subsumption_resolution,[status(thm)],[f1005,f1239])).
% 1.34/0.64 fof(f1266,plain,(
% 1.34/0.64 ~x=x|null_class=x),
% 1.34/0.64 inference(equality_factoring,[status(thm)],[f1240])).
% 1.34/0.64 fof(f1281,plain,(
% 1.34/0.64 ![X0,X1]: (~member(X0,null_class)|member(X0,X1)|X1=x)),
% 1.34/0.64 inference(backward_demodulation,[status(thm)],[f1417,f426])).
% 1.34/0.64 fof(f1285,plain,(
% 1.34/0.64 ![X0,X1]: (~restrict(X0,singleton(X1),universal_class)=x|~member(X1,domain_of(X0)))),
% 1.34/0.64 inference(backward_demodulation,[status(thm)],[f1417,f153])).
% 1.34/0.64 fof(f1417,plain,(
% 1.34/0.64 null_class=x),
% 1.34/0.64 inference(trivial_equality_resolution,[status(thm)],[f1266])).
% 1.34/0.64 fof(f1421,plain,(
% 1.34/0.64 ![X0,X1]: (~member(X0,x)|member(X0,X1)|X1=x)),
% 1.34/0.64 inference(forward_demodulation,[status(thm)],[f1417,f1281])).
% 1.34/0.64 fof(f1543,plain,(
% 1.34/0.64 ![X0]: (member(x,X0)|X0=x)),
% 1.34/0.64 inference(resolution,[status(thm)],[f1421,f343])).
% 1.34/0.64 fof(f1567,plain,(
% 1.34/0.64 ![X0]: (singleton(X0)=x|x=X0)),
% 1.34/0.64 inference(resolution,[status(thm)],[f1543,f270])).
% 1.34/0.64 fof(f1588,plain,(
% 1.34/0.64 ![X0]: (~member(X0,universal_class)|member(X0,x)|x=X0)),
% 1.34/0.64 inference(paramodulation,[status(thm)],[f1567,f272])).
% 1.34/0.64 fof(f1606,plain,(
% 1.34/0.64 ![X0]: (~member(X0,universal_class)|x=X0)),
% 1.34/0.64 inference(forward_subsumption_resolution,[status(thm)],[f1588,f279])).
% 1.34/0.64 fof(f1622,plain,(
% 1.34/0.64 ![X0,X1]: (x=ordered_pair(X0,X1))),
% 1.34/0.64 inference(resolution,[status(thm)],[f1606,f303])).
% 1.34/0.64 fof(f1628,plain,(
% 1.34/0.64 ![X0]: (x=singleton(X0))),
% 1.34/0.64 inference(resolution,[status(thm)],[f1606,f256])).
% 1.34/0.64 fof(f1661,plain,(
% 1.34/0.64 ![X0,X1]: (~member(x,element_relation)|member(X0,X1))),
% 1.34/0.64 inference(backward_demodulation,[status(thm)],[f1622,f140])).
% 1.34/0.64 fof(f1785,plain,(
% 1.34/0.64 ![X0,X1]: (~restrict(X0,x,universal_class)=x|~member(X1,domain_of(X0)))),
% 1.34/0.64 inference(backward_demodulation,[status(thm)],[f1628,f1285])).
% 1.34/0.64 fof(f1797,plain,(
% 1.34/0.64 ![X0,X1]: (~member(X0,x)|X0=X1)),
% 1.34/0.64 inference(backward_demodulation,[status(thm)],[f1628,f270])).
% 1.34/0.64 fof(f1965,plain,(
% 1.34/0.64 ![X0,X1]: (member(X0,X1))),
% 1.34/0.64 inference(forward_subsumption_resolution,[status(thm)],[f1661,f474])).
% 1.34/0.64 fof(f2155,plain,(
% 1.34/0.64 ![X0]: (~restrict(X0,x,universal_class)=x)),
% 1.34/0.64 inference(forward_subsumption_resolution,[status(thm)],[f1785,f1965])).
% 1.34/0.64 fof(f2161,plain,(
% 1.34/0.64 ![X0,X1]: (X0=X1)),
% 1.34/0.64 inference(forward_subsumption_resolution,[status(thm)],[f1797,f1965])).
% 1.34/0.64 fof(f2162,plain,(
% 1.34/0.64 $false),
% 1.34/0.64 inference(backward_subsumption_resolution,[status(thm)],[f2155,f2161])).
% 1.34/0.64 % SZS output end CNFRefutation for theBenchmark.p
% 1.34/0.66 % Elapsed time: 0.274844 seconds
% 1.34/0.66 % CPU time: 1.898770 seconds
% 1.34/0.66 % Total memory used: 140.701 MB
% 1.34/0.66 % Net memory used: 136.496 MB
%------------------------------------------------------------------------------