%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : NUM172-1 : 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 : n016.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 01:42:19 PM UTC 2026
% Result : Unsatisfiable 7.14s 1.35s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : NUM172-1 : 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 : n016.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 02:14:38 UTC 2026
% 0.09/0.36 % CPUTime :
% 0.09/0.39 % Drodi V4.1.1
% 7.14/1.35 % Refutation found
% 7.14/1.35 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 7.14/1.35 % SZS output start CNFRefutation for theBenchmark
% 7.14/1.35 fof(f1,axiom,(
% 7.14/1.35 (![X,Y,U]: (( ~ subclass(X,Y)| ~ member(U,X)| member(U,Y) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f4,axiom,(
% 7.14/1.35 (![X]: (subclass(X,universal_class) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f8,axiom,(
% 7.14/1.35 (![U,X,Y]: (( ~ member(U,unordered_pair(X,Y))| U = X| U = Y ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f10,axiom,(
% 7.14/1.35 (![Y,X]: (( ~ member(Y,universal_class)| member(Y,unordered_pair(X,Y)) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f12,axiom,(
% 7.14/1.35 (![X]: (unordered_pair(X,X) = singleton(X) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f15,axiom,(
% 7.14/1.35 (![U,V,X,Y]: (( ~ member(ordered_pair(U,V),cross_product(X,Y))| member(V,Y) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f16,axiom,(
% 7.14/1.35 (![U,X,V,Y]: (( ~ member(U,X)| ~ member(V,Y)| member(ordered_pair(U,V),cross_product(X,Y)) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f17,axiom,(
% 7.14/1.35 (![Z,X,Y]: (( ~ member(Z,cross_product(X,Y))| ordered_pair(first(Z),second(Z)) = Z ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f22,axiom,(
% 7.14/1.35 (![Z,X,Y]: (( ~ member(Z,intersection(X,Y))| member(Z,Y) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f23,axiom,(
% 7.14/1.35 (![Z,X,Y]: (( ~ member(Z,X)| ~ member(Z,Y)| member(Z,intersection(X,Y)) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f24,axiom,(
% 7.14/1.35 (![Z,X]: (( ~ member(Z,complement(X))| ~ member(Z,X) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f25,axiom,(
% 7.14/1.35 (![Z,X]: (( ~ member(Z,universal_class)| member(Z,complement(X))| member(Z,X) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f26,axiom,(
% 7.14/1.35 (![X,Y]: (complement(intersection(complement(X),complement(Y))) = union(X,Y) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f43,axiom,(
% 7.14/1.35 (![X]: (union(X,singleton(X)) = successor(X) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f44,axiom,(
% 7.14/1.35 subclass(successor_relation,cross_product(universal_class,universal_class)) ),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f46,axiom,(
% 7.14/1.35 (![X,Y]: (( successor(X) != Y| ~ member(ordered_pair(X,Y),cross_product(universal_class,universal_class))| member(ordered_pair(X,Y),successor_relation) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f66,axiom,(
% 7.14/1.35 (![X]: (( X = null_class| member(regular(X),X) ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f67,axiom,(
% 7.14/1.35 (![X]: (( X = null_class| intersection(X,regular(X)) = null_class ) ))),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f159,negated_conjecture,(
% 7.14/1.35 member(x,universal_class) ),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f160,negated_conjecture,(
% 7.14/1.35 successor(x) = x ),
% 7.14/1.35 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 7.14/1.35 fof(f161,plain,(
% 7.14/1.35 ![Y,U]: ((![X]: (~subclass(X,Y)|~member(U,X)))|member(U,Y))),
% 7.14/1.35 inference(miniscoping,[status(thm)],[f1])).
% 7.14/1.35 fof(f162,plain,(
% 7.14/1.35 ![X0,X1,X2]: (~subclass(X0,X1)|~member(X2,X0)|member(X2,X1))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f161])).
% 7.14/1.35 fof(f165,plain,(
% 7.14/1.35 ![X0]: (subclass(X0,universal_class))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f4])).
% 7.14/1.35 fof(f169,plain,(
% 7.14/1.35 ![U,Y]: ((![X]: (~member(U,unordered_pair(X,Y))|U=X))|U=Y)),
% 7.14/1.35 inference(miniscoping,[status(thm)],[f8])).
% 7.14/1.35 fof(f170,plain,(
% 7.14/1.35 ![X0,X1,X2]: (~member(X0,unordered_pair(X1,X2))|X0=X1|X0=X2)),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f169])).
% 7.14/1.35 fof(f173,plain,(
% 7.14/1.35 ![Y]: (~member(Y,universal_class)|(![X]: member(Y,unordered_pair(X,Y))))),
% 7.14/1.35 inference(miniscoping,[status(thm)],[f10])).
% 7.14/1.35 fof(f174,plain,(
% 7.14/1.35 ![X0,X1]: (~member(X0,universal_class)|member(X0,unordered_pair(X1,X0)))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f173])).
% 7.14/1.35 fof(f176,plain,(
% 7.14/1.35 ![X0]: (unordered_pair(X0,X0)=singleton(X0))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f12])).
% 7.14/1.35 fof(f180,plain,(
% 7.14/1.35 ![V,Y]: ((![U,X]: ~member(ordered_pair(U,V),cross_product(X,Y)))|member(V,Y))),
% 7.14/1.35 inference(miniscoping,[status(thm)],[f15])).
% 7.14/1.35 fof(f181,plain,(
% 7.14/1.35 ![X0,X1,X2,X3]: (~member(ordered_pair(X0,X1),cross_product(X2,X3))|member(X1,X3))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f180])).
% 7.14/1.35 fof(f182,plain,(
% 7.14/1.35 ![X0,X1,X2,X3]: (~member(X0,X1)|~member(X2,X3)|member(ordered_pair(X0,X2),cross_product(X1,X3)))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f16])).
% 7.14/1.35 fof(f183,plain,(
% 7.14/1.35 ![Z]: ((![X,Y]: ~member(Z,cross_product(X,Y)))|ordered_pair(first(Z),second(Z))=Z)),
% 7.14/1.35 inference(miniscoping,[status(thm)],[f17])).
% 7.14/1.35 fof(f184,plain,(
% 7.14/1.35 ![X0,X1,X2]: (~member(X0,cross_product(X1,X2))|ordered_pair(first(X0),second(X0))=X0)),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f183])).
% 7.14/1.35 fof(f190,plain,(
% 7.14/1.35 ![Z,Y]: ((![X]: ~member(Z,intersection(X,Y)))|member(Z,Y))),
% 7.14/1.35 inference(miniscoping,[status(thm)],[f22])).
% 7.14/1.35 fof(f191,plain,(
% 7.14/1.35 ![X0,X1,X2]: (~member(X0,intersection(X1,X2))|member(X0,X2))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f190])).
% 7.14/1.35 fof(f192,plain,(
% 7.14/1.35 ![X0,X1,X2]: (~member(X0,X1)|~member(X0,X2)|member(X0,intersection(X1,X2)))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f23])).
% 7.14/1.35 fof(f193,plain,(
% 7.14/1.35 ![X0,X1]: (~member(X0,complement(X1))|~member(X0,X1))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f24])).
% 7.14/1.35 fof(f194,plain,(
% 7.14/1.35 ![X0,X1]: (~member(X0,universal_class)|member(X0,complement(X1))|member(X0,X1))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f25])).
% 7.14/1.35 fof(f195,plain,(
% 7.14/1.35 ![X0,X1]: (complement(intersection(complement(X0),complement(X1)))=union(X0,X1))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f26])).
% 7.14/1.35 fof(f212,plain,(
% 7.14/1.35 ![X0]: (union(X0,singleton(X0))=successor(X0))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f43])).
% 7.14/1.35 fof(f213,plain,(
% 7.14/1.35 subclass(successor_relation,cross_product(universal_class,universal_class))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f44])).
% 7.14/1.35 fof(f215,plain,(
% 7.14/1.35 ![X0,X1]: (~successor(X0)=X1|~member(ordered_pair(X0,X1),cross_product(universal_class,universal_class))|member(ordered_pair(X0,X1),successor_relation))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f46])).
% 7.14/1.35 fof(f235,plain,(
% 7.14/1.35 ![X0]: (X0=null_class|member(regular(X0),X0))),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f66])).
% 7.14/1.35 fof(f236,plain,(
% 7.14/1.35 ![X0]: (X0=null_class|intersection(X0,regular(X0))=null_class)),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f67])).
% 7.14/1.35 fof(f348,plain,(
% 7.14/1.35 member(x,universal_class)),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f159])).
% 7.14/1.35 fof(f349,plain,(
% 7.14/1.35 successor(x)=x),
% 7.14/1.35 inference(cnf_transformation,[status(thm)],[f160])).
% 7.14/1.35 fof(f353,plain,(
% 7.14/1.35 ![X0]: (~member(ordered_pair(X0,successor(X0)),cross_product(universal_class,universal_class))|member(ordered_pair(X0,successor(X0)),successor_relation))),
% 7.14/1.35 inference(destructive_equality_resolution,[status(thm)],[f215])).
% 7.14/1.35 fof(f359,plain,(
% 7.14/1.35 ~member(ordered_pair(x,x),cross_product(universal_class,universal_class))|member(ordered_pair(x,successor(x)),successor_relation)),
% 7.14/1.35 inference(paramodulation,[status(thm)],[f349,f353])).
% 7.14/1.35 fof(f360,plain,(
% 7.14/1.35 ~member(ordered_pair(x,x),cross_product(universal_class,universal_class))|member(ordered_pair(x,x),successor_relation)),
% 7.14/1.35 inference(forward_demodulation,[status(thm)],[f349,f359])).
% 7.14/1.35 fof(f362,plain,(
% 7.14/1.35 ![X0,X1]: (~member(X0,X1)|member(X0,universal_class))),
% 7.14/1.35 inference(resolution,[status(thm)],[f165,f162])).
% 7.14/1.35 fof(f377,plain,(
% 7.14/1.35 ![X0]: (~member(X0,universal_class)|member(X0,singleton(X0)))),
% 7.14/1.35 inference(paramodulation,[status(thm)],[f176,f174])).
% 7.14/1.35 fof(f379,plain,(
% 7.14/1.35 ![X0,X1]: (~member(X0,singleton(X1))|X0=X1|X0=X1)),
% 7.14/1.35 inference(paramodulation,[status(thm)],[f176,f170])).
% 7.14/1.35 fof(f381,plain,(
% 7.14/1.35 ![X0,X1]: (~member(X0,singleton(X1))|X0=X1)),
% 7.14/1.35 inference(duplicate_literals_removal,[status(thm)],[f379])).
% 7.14/1.35 fof(f399,plain,(
% 7.14/1.35 ![X0]: (singleton(X0)=null_class|regular(singleton(X0))=X0)),
% 7.14/1.35 inference(resolution,[status(thm)],[f235,f381])).
% 7.14/1.35 fof(f401,plain,(
% 7.14/1.35 ![X0]: (complement(X0)=null_class|~member(regular(complement(X0)),X0))),
% 7.14/1.35 inference(resolution,[status(thm)],[f235,f193])).
% 7.14/1.35 fof(f409,plain,(
% 7.14/1.35 ~member(x,universal_class)|~member(x,universal_class)|member(ordered_pair(x,x),successor_relation)),
% 7.14/1.35 inference(resolution,[status(thm)],[f182,f360])).
% 7.14/1.35 fof(f413,plain,(
% 7.14/1.35 ~member(x,universal_class)|member(ordered_pair(x,x),successor_relation)),
% 7.14/1.35 inference(duplicate_literals_removal,[status(thm)],[f409])).
% 7.14/1.35 fof(f414,plain,(
% 7.14/1.35 member(ordered_pair(x,x),successor_relation)),
% 7.14/1.35 inference(forward_subsumption_resolution,[status(thm)],[f413,f348])).
% 7.14/1.35 fof(f424,plain,(
% 7.14/1.35 ![X0]: (~member(X0,successor_relation)|member(X0,cross_product(universal_class,universal_class)))),
% 7.14/1.35 inference(resolution,[status(thm)],[f213,f162])).
% 7.14/1.35 fof(f533,plain,(
% 7.14/1.35 ![X0]: (singleton(X0)=null_class|intersection(singleton(X0),X0)=null_class|singleton(X0)=null_class)),
% 7.14/1.35 inference(paramodulation,[status(thm)],[f399,f236])).
% 7.14/1.35 fof(f535,plain,(
% 7.14/1.35 ![X0]: (singleton(X0)=null_class|intersection(singleton(X0),X0)=null_class)),
% 7.14/1.35 inference(duplicate_literals_removal,[status(thm)],[f533])).
% 7.14/1.35 fof(f910,plain,(
% 7.14/1.35 ![X0]: (complement(universal_class)=null_class|~member(regular(complement(universal_class)),X0))),
% 7.14/1.35 inference(resolution,[status(thm)],[f401,f362])).
% 7.14/1.35 fof(f951,plain,(
% 7.14/1.35 ![X0,X1]: (~member(X0,singleton(X1))|~member(X0,X1)|member(X0,null_class)|singleton(X1)=null_class)),
% 7.14/1.35 inference(paramodulation,[status(thm)],[f535,f192])).
% 7.14/1.35 fof(f1150,plain,(
% 7.14/1.35 member(ordered_pair(x,x),cross_product(universal_class,universal_class))),
% 7.14/1.35 inference(resolution,[status(thm)],[f424,f414])).
% 7.14/1.35 fof(f1195,plain,(
% 7.14/1.35 ordered_pair(first(ordered_pair(x,x)),second(ordered_pair(x,x)))=ordered_pair(x,x)),
% 7.14/1.35 inference(resolution,[status(thm)],[f1150,f184])).
% 7.14/1.35 fof(f1213,plain,(
% 7.14/1.35 ![X0,X1]: (~member(ordered_pair(x,x),cross_product(X0,X1))|member(second(ordered_pair(x,x)),X1))),
% 7.14/1.35 inference(paramodulation,[status(thm)],[f1195,f181])).
% 7.14/1.35 fof(f1258,plain,(
% 7.14/1.35 ![X0,X1]: (member(second(ordered_pair(x,x)),X0)|~member(x,X1)|~member(x,X0))),
% 7.14/1.35 inference(resolution,[status(thm)],[f1213,f182])).
% 7.14/1.35 fof(f1262,plain,(
% 7.14/1.35 ![X0]: (member(second(ordered_pair(x,x)),X0)|~member(x,X0))),
% 7.14/1.35 inference(resolution,[status(thm)],[f1258,f348])).
% 7.14/1.35 fof(f1294,plain,(
% 7.14/1.35 member(second(ordered_pair(x,x)),singleton(x))|~member(x,universal_class)),
% 7.14/1.35 inference(resolution,[status(thm)],[f1262,f377])).
% 7.14/1.35 fof(f1298,plain,(
% 7.14/1.35 ![X0]: (member(second(ordered_pair(x,x)),complement(X0))|~member(x,universal_class)|member(x,X0))),
% 7.14/1.35 inference(resolution,[status(thm)],[f1262,f194])).
% 7.14/1.35 fof(f1305,plain,(
% 7.14/1.35 member(second(ordered_pair(x,x)),singleton(x))),
% 7.14/1.35 inference(forward_subsumption_resolution,[status(thm)],[f1294,f348])).
% 7.14/1.35 fof(f1306,plain,(
% 7.14/1.35 ![X0]: (member(second(ordered_pair(x,x)),complement(X0))|member(x,X0))),
% 7.14/1.35 inference(forward_subsumption_resolution,[status(thm)],[f1298,f348])).
% 7.14/1.35 fof(f1309,plain,(
% 7.14/1.35 second(ordered_pair(x,x))=x),
% 7.14/1.35 inference(resolution,[status(thm)],[f1305,f381])).
% 7.14/1.35 fof(f1310,plain,(
% 7.14/1.35 member(x,singleton(x))),
% 7.14/1.35 inference(backward_demodulation,[status(thm)],[f1309,f1305])).
% 7.14/1.35 fof(f1319,plain,(
% 7.14/1.35 ![X0]: (member(x,complement(X0))|member(x,X0))),
% 7.14/1.35 inference(backward_demodulation,[status(thm)],[f1309,f1306])).
% 7.14/1.35 fof(f1382,plain,(
% 7.14/1.35 ![X0,X1]: (member(x,union(X0,X1))|member(x,intersection(complement(X0),complement(X1))))),
% 7.14/1.35 inference(paramodulation,[status(thm)],[f195,f1319])).
% 7.14/1.35 fof(f1606,plain,(
% 7.14/1.35 ![X0,X1]: (member(x,union(X0,X1))|member(x,complement(X1)))),
% 7.14/1.35 inference(resolution,[status(thm)],[f1382,f191])).
% 7.14/1.35 fof(f1620,plain,(
% 7.14/1.35 ![X0]: (member(x,successor(X0))|member(x,complement(singleton(X0))))),
% 7.14/1.35 inference(paramodulation,[status(thm)],[f212,f1606])).
% 7.14/1.35 fof(f1625,plain,(
% 7.14/1.35 ![X0]: (member(x,successor(X0))|~member(x,singleton(X0)))),
% 7.14/1.35 inference(resolution,[status(thm)],[f1620,f193])).
% 7.14/1.35 fof(f1627,plain,(
% 7.14/1.35 member(x,successor(x))),
% 7.14/1.35 inference(resolution,[status(thm)],[f1625,f1310])).
% 7.14/1.35 fof(f1632,plain,(
% 7.14/1.35 member(x,x)),
% 7.14/1.35 inference(forward_demodulation,[status(thm)],[f349,f1627])).
% 7.14/1.35 fof(f2285,plain,(
% 7.14/1.35 complement(universal_class)=null_class|complement(universal_class)=null_class),
% 7.14/1.35 inference(resolution,[status(thm)],[f910,f235])).
% 7.14/1.35 fof(f2332,plain,(
% 7.14/1.37 complement(universal_class)=null_class),
% 7.14/1.37 inference(duplicate_literals_removal,[status(thm)],[f2285])).
% 7.14/1.37 fof(f2351,plain,(
% 7.14/1.37 ![X0]: (~member(X0,null_class)|~member(X0,universal_class))),
% 7.14/1.37 inference(paramodulation,[status(thm)],[f2332,f193])).
% 7.14/1.37 fof(f2353,plain,(
% 7.14/1.37 ![X0,X1]: (~member(X0,singleton(X1))|~member(X0,X1)|singleton(X1)=null_class)),
% 7.14/1.37 inference(backward_subsumption_resolution,[status(thm)],[f951,f2355])).
% 7.14/1.37 fof(f2355,plain,(
% 7.14/1.37 ![X0]: (~member(X0,null_class))),
% 7.14/1.37 inference(forward_subsumption_resolution,[status(thm)],[f2351,f362])).
% 7.14/1.37 fof(f3322,plain,(
% 7.14/1.37 ~member(x,x)|singleton(x)=null_class),
% 7.14/1.37 inference(resolution,[status(thm)],[f2353,f1310])).
% 7.14/1.37 fof(f3345,plain,(
% 7.14/1.37 member(x,null_class)),
% 7.14/1.37 inference(backward_demodulation,[status(thm)],[f3404,f1310])).
% 7.14/1.37 fof(f3404,plain,(
% 7.14/1.37 singleton(x)=null_class),
% 7.14/1.37 inference(forward_subsumption_resolution,[status(thm)],[f3322,f1632])).
% 7.14/1.37 fof(f3431,plain,(
% 7.14/1.37 $false),
% 7.14/1.37 inference(forward_subsumption_resolution,[status(thm)],[f3345,f2355])).
% 7.14/1.37 % SZS output end CNFRefutation for theBenchmark.p
% 7.14/1.39 % Elapsed time: 1.008776 seconds
% 7.14/1.39 % CPU time: 7.624828 seconds
% 7.14/1.39 % Total memory used: 203.641 MB
% 7.14/1.39 % Net memory used: 194.873 MB
%------------------------------------------------------------------------------