%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : SET024-4 : TPTP v9.3.1. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n008.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 02:11:15 PM UTC 2026
% Result : Unsatisfiable 0.11s 0.42s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET024-4 : TPTP v9.3.1. Released v1.0.0.
% 0.00/0.04 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.11/0.37 % Computer : n008.cluster.edu
% 0.11/0.37 % Model : x86_64 x86_64
% 0.11/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.37 % Memory : 8046.5625MB
% 0.11/0.37 % OS : Linux 6.8.0-71-generic
% 0.11/0.37 % CPULimit : 300
% 0.11/0.37 % WCLimit : 300
% 0.11/0.37 % DateTime : Mon Sep 21 04:44:38 UTC 2026
% 0.11/0.38 % CPUTime :
% 0.11/0.39 % Drodi V4.1.1
% 0.11/0.42 % Refutation found
% 0.11/0.42 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.11/0.42 % SZS output start CNFRefutation for theBenchmark
% 0.11/0.42 fof(f6,axiom,(
% 0.11/0.42 (![U,X,Y]: (( member(U,non_ordered_pair(X,Y))| ~ little_set(U)| U != X ) ))),
% 0.11/0.42 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.11/0.42 fof(f9,axiom,(
% 0.11/0.42 (![X]: (singleton_set(X) = non_ordered_pair(X,X) ))),
% 0.11/0.42 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.11/0.42 fof(f142,hypothesis,(
% 0.11/0.42 little_set(a) ),
% 0.11/0.42 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.11/0.42 fof(f143,negated_conjecture,(
% 0.11/0.42 ~ member(a,singleton_set(a)) ),
% 0.11/0.42 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.11/0.42 fof(f151,plain,(
% 0.11/0.42 ![U,X]: (((![Y]: member(U,non_ordered_pair(X,Y)))|~little_set(U))|~U=X)),
% 0.11/0.42 inference(miniscoping,[status(thm)],[f6])).
% 0.11/0.42 fof(f152,plain,(
% 0.11/0.42 ![X0,X1,X2]: (member(X0,non_ordered_pair(X1,X2))|~little_set(X0)|~X0=X1)),
% 0.11/0.42 inference(cnf_transformation,[status(thm)],[f151])).
% 0.11/0.42 fof(f156,plain,(
% 0.11/0.42 ![X0]: (singleton_set(X0)=non_ordered_pair(X0,X0))),
% 0.11/0.42 inference(cnf_transformation,[status(thm)],[f9])).
% 0.11/0.42 fof(f321,plain,(
% 0.11/0.42 little_set(a)),
% 0.11/0.42 inference(cnf_transformation,[status(thm)],[f142])).
% 0.11/0.42 fof(f322,plain,(
% 0.11/0.42 ~member(a,singleton_set(a))),
% 0.11/0.42 inference(cnf_transformation,[status(thm)],[f143])).
% 0.11/0.42 fof(f323,plain,(
% 0.11/0.42 ![X0,X1]: (member(X0,non_ordered_pair(X0,X1))|~little_set(X0))),
% 0.11/0.42 inference(destructive_equality_resolution,[status(thm)],[f152])).
% 0.11/0.42 fof(f390,plain,(
% 0.11/0.42 ![X0]: (member(a,non_ordered_pair(a,X0)))),
% 0.11/0.42 inference(resolution,[status(thm)],[f323,f321])).
% 0.11/0.42 fof(f405,plain,(
% 0.11/0.42 member(a,singleton_set(a))),
% 0.11/0.42 inference(paramodulation,[status(thm)],[f156,f390])).
% 0.11/0.42 fof(f406,plain,(
% 0.11/0.42 $false),
% 0.11/0.42 inference(forward_subsumption_resolution,[status(thm)],[f405,f322])).
% 0.11/0.42 % SZS output end CNFRefutation for theBenchmark.p
% 0.11/0.46 % Elapsed time: 0.076882 seconds
% 0.11/0.46 % CPU time: 0.203327 seconds
% 0.11/0.46 % Total memory used: 107.189 MB
% 0.11/0.46 % Net memory used: 107.073 MB
%------------------------------------------------------------------------------