%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : SET086+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n011.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 02:11:30 PM UTC 2026
% Result : Theorem 0.15s 0.41s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET086+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% 0.00/0.04 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.10/0.37 % Computer : n011.cluster.edu
% 0.10/0.37 % Model : x86_64 x86_64
% 0.10/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.37 % Memory : 8046.5625MB
% 0.10/0.37 % OS : Linux 6.8.0-71-generic
% 0.10/0.37 % CPULimit : 300
% 0.10/0.37 % WCLimit : 300
% 0.10/0.37 % DateTime : Mon Sep 21 04:50:40 UTC 2026
% 0.10/0.37 % CPUTime :
% 0.15/0.38 % Drodi V4.1.1
% 0.15/0.41 % Refutation found
% 0.15/0.41 % SZS status Theorem for theBenchmark: Theorem is valid
% 0.15/0.41 % SZS output start CNFRefutation for theBenchmark
% 0.15/0.41 fof(f44,conjecture,(
% 0.15/0.41 (! [X] :(? [U] :( ( member(U,universal_class)& X = singleton(U) )| ( ~ (? [Y] :( member(Y,universal_class)& X = singleton(Y) ))& U = X ) ) ))),
% 0.15/0.41 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.15/0.41 fof(f45,negated_conjecture,(
% 0.15/0.41 ~((! [X] :(? [U] :( ( member(U,universal_class)& X = singleton(U) )| ( ~ (? [Y] :( member(Y,universal_class)& X = singleton(Y) ))& U = X ) ) )))),
% 0.15/0.41 inference(negated_conjecture,[status(cth)],[f44])).
% 0.15/0.41 fof(f191,plain,(
% 0.15/0.41 (?[X]: ![U]: ((~member(U,universal_class)|~X=singleton(U))&((?[Y]: (member(Y,universal_class)&X=singleton(Y)))|~U=X)))),
% 0.15/0.41 inference(pre_NNF_transformation,[status(thm)],[f45])).
% 0.15/0.41 fof(f192,plain,(
% 0.15/0.41 ?[X]: ((![U]: (~member(U,universal_class)|~X=singleton(U)))&((?[Y]: (member(Y,universal_class)&X=singleton(Y)))|(![U]: ~U=X)))),
% 0.15/0.41 inference(miniscoping,[status(thm)],[f191])).
% 0.15/0.41 fof(f193,plain,(
% 0.15/0.41 ((![U]: (~member(U,universal_class)|~sK7_skl=singleton(U)))&((member(sK8_skl,universal_class)&sK7_skl=singleton(sK8_skl))|(![U]: ~U=sK7_skl)))),
% 0.15/0.41 inference(skolemize,[status(esa),new_symbols(skolem,[sK7_skl,sK8_skl]),skolemize(X,sK7_skl),skolemize(Y,sK8_skl)],[f192])).
% 0.15/0.41 fof(f194,plain,(
% 0.15/0.41 ![X0]: (~member(X0,universal_class)|~sK7_skl=singleton(X0))),
% 0.15/0.41 inference(cnf_transformation,[status(thm)],[f193])).
% 0.15/0.41 fof(f195,plain,(
% 0.15/0.41 ![X0]: (member(sK8_skl,universal_class)|~X0=sK7_skl)),
% 0.15/0.41 inference(cnf_transformation,[status(thm)],[f193])).
% 0.15/0.41 fof(f196,plain,(
% 0.15/0.41 ![X0]: (sK7_skl=singleton(sK8_skl)|~X0=sK7_skl)),
% 0.15/0.41 inference(cnf_transformation,[status(thm)],[f193])).
% 0.15/0.41 fof(f203,plain,(
% 0.15/0.41 member(sK8_skl,universal_class)),
% 0.15/0.41 inference(destructive_equality_resolution,[status(thm)],[f195])).
% 0.15/0.41 fof(f204,plain,(
% 0.15/0.41 sK7_skl=singleton(sK8_skl)),
% 0.15/0.41 inference(destructive_equality_resolution,[status(thm)],[f196])).
% 0.15/0.41 fof(f205,plain,(
% 0.15/0.41 ~member(sK8_skl,universal_class)),
% 0.15/0.41 inference(resolution,[status(thm)],[f204,f194])).
% 0.15/0.41 fof(f207,plain,(
% 0.15/0.41 $false),
% 0.15/0.41 inference(forward_subsumption_resolution,[status(thm)],[f205,f203])).
% 0.15/0.41 % SZS output end CNFRefutation for theBenchmark.p
% 0.15/0.44 % Elapsed time: 0.055297 seconds
% 0.15/0.44 % CPU time: 0.150055 seconds
% 0.15/0.44 % Total memory used: 104.503 MB
% 0.15/0.44 % Net memory used: 104.398 MB
%------------------------------------------------------------------------------