%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : SET091+1 : TPTP v9.3.1. Bugfixed v7.3.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n010.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 02:11:31 PM UTC 2026
% Result : Theorem 0.08s 5.40s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET091+1 : TPTP v9.3.1. Bugfixed v7.3.0.
% 0.00/0.04 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.08/5.37 % Computer : n010.cluster.edu
% 0.08/5.37 % Model : x86_64 x86_64
% 0.08/5.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/5.37 % Memory : 8046.5625MB
% 0.08/5.37 % OS : Linux 6.8.0-71-generic
% 0.08/5.37 % CPULimit : 300
% 0.08/5.37 % WCLimit : 300
% 0.08/5.37 % DateTime : Mon Sep 21 04:52:19 UTC 2026
% 0.08/5.37 % CPUTime :
% 0.08/5.38 % Drodi V4.1.1
% 0.08/5.40 % Refutation found
% 0.08/5.40 % SZS status Theorem for theBenchmark: Theorem is valid
% 0.08/5.40 % SZS output start CNFRefutation for theBenchmark
% 0.08/5.40 fof(f46,axiom,(
% 0.08/5.40 (! [X] :( member(member_of(X),universal_class)| member_of(X) = X ) )),
% 0.08/5.40 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.08/5.40 fof(f47,axiom,(
% 0.08/5.40 (! [X] :( singleton(member_of(X)) = X| member_of(X) = X ) )),
% 0.08/5.40 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.08/5.40 fof(f48,conjecture,(
% 0.08/5.40 (! [X,U] :( ( ~ (? [Y] :( member(Y,universal_class)& X = singleton(Y) ))& X = U )=> member_of(X) = U ) )),
% 0.08/5.40 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.08/5.40 fof(f49,negated_conjecture,(
% 0.08/5.40 ~((! [X,U] :( ( ~ (? [Y] :( member(Y,universal_class)& X = singleton(Y) ))& X = U )=> member_of(X) = U ) ))),
% 0.08/5.40 inference(negated_conjecture,[status(cth)],[f48])).
% 0.08/5.40 fof(f199,plain,(
% 0.08/5.40 ![X0]: (member(member_of(X0),universal_class)|member_of(X0)=X0)),
% 0.08/5.40 inference(cnf_transformation,[status(thm)],[f46])).
% 0.08/5.40 fof(f200,plain,(
% 0.08/5.40 ![X0]: (singleton(member_of(X0))=X0|member_of(X0)=X0)),
% 0.08/5.40 inference(cnf_transformation,[status(thm)],[f47])).
% 0.08/5.40 fof(f201,plain,(
% 0.08/5.40 (?[X,U]: (((![Y]: (~member(Y,universal_class)|~X=singleton(Y)))&X=U)&~member_of(X)=U))),
% 0.08/5.40 inference(pre_NNF_transformation,[status(thm)],[f49])).
% 0.08/5.40 fof(f202,plain,(
% 0.08/5.40 (((![Y]: (~member(Y,universal_class)|~sK7_skl=singleton(Y)))&sK7_skl=sK8_skl)&~member_of(sK7_skl)=sK8_skl)),
% 0.08/5.40 inference(skolemize,[status(esa),new_symbols(skolem,[sK7_skl,sK8_skl]),skolemize(X,sK7_skl),skolemize(U,sK8_skl)],[f201])).
% 0.08/5.40 fof(f203,plain,(
% 0.08/5.40 ![X0]: (~member(X0,universal_class)|~sK7_skl=singleton(X0))),
% 0.08/5.40 inference(cnf_transformation,[status(thm)],[f202])).
% 0.08/5.40 fof(f204,plain,(
% 0.08/5.40 sK7_skl=sK8_skl),
% 0.08/5.40 inference(cnf_transformation,[status(thm)],[f202])).
% 0.08/5.40 fof(f205,plain,(
% 0.08/5.40 ~member_of(sK7_skl)=sK8_skl),
% 0.08/5.40 inference(cnf_transformation,[status(thm)],[f202])).
% 0.08/5.40 fof(f212,plain,(
% 0.08/5.40 ~member_of(sK7_skl)=sK7_skl),
% 0.08/5.40 inference(forward_demodulation,[status(thm)],[f204,f205])).
% 0.08/5.40 fof(f213,plain,(
% 0.08/5.40 member_of(sK7_skl)=sK7_skl|~member(member_of(sK7_skl),universal_class)),
% 0.08/5.40 inference(resolution,[status(thm)],[f200,f203])).
% 0.08/5.40 fof(f215,plain,(
% 0.08/5.40 ~member(member_of(sK7_skl),universal_class)),
% 0.08/5.40 inference(forward_subsumption_resolution,[status(thm)],[f213,f212])).
% 0.08/5.40 fof(f218,plain,(
% 0.08/5.40 member_of(sK7_skl)=sK7_skl),
% 0.08/5.40 inference(resolution,[status(thm)],[f199,f215])).
% 0.08/5.40 fof(f221,plain,(
% 0.08/5.40 $false),
% 0.08/5.40 inference(forward_subsumption_resolution,[status(thm)],[f218,f212])).
% 0.08/5.40 % SZS output end CNFRefutation for theBenchmark.p
% 0.14/5.42 % Elapsed time: 0.044106 seconds
% 0.14/5.42 % CPU time: 0.117391 seconds
% 0.14/5.42 % Total memory used: 55.599 MB
% 0.14/5.42 % Net memory used: 55.555 MB
%------------------------------------------------------------------------------