%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : SET077-7 : 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 : n020.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 02:11:28 PM UTC 2026
% Result : Unsatisfiable 0.18s 0.49s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET077-7 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.05 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.18/0.44 % Computer : n020.cluster.edu
% 0.18/0.44 % Model : x86_64 x86_64
% 0.18/0.44 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.18/0.44 % Memory : 8046.5625MB
% 0.18/0.44 % OS : Linux 6.8.0-71-generic
% 0.18/0.44 % CPULimit : 300
% 0.18/0.44 % WCLimit : 300
% 0.18/0.44 % DateTime : Mon Sep 21 04:50:47 UTC 2026
% 0.18/0.44 % CPUTime :
% 0.18/0.48 % Drodi V4.1.1
% 0.18/0.49 % Refutation found
% 0.18/0.49 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.18/0.49 % SZS output start CNFRefutation for theBenchmark
% 0.18/0.49 fof(f11,axiom,(
% 0.18/0.49 (![X,Y]: (member(unordered_pair(X,Y),universal_class) ))),
% 0.18/0.49 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.18/0.49 fof(f112,axiom,(
% 0.18/0.49 (![X,Y]: (( member(X,universal_class)| unordered_pair(X,Y) = singleton(Y) ) ))),
% 0.18/0.49 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.18/0.49 fof(f120,negated_conjecture,(
% 0.18/0.49 ~ member(singleton(x),universal_class) ),
% 0.18/0.49 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.18/0.49 fof(f135,plain,(
% 0.18/0.49 ![X0,X1]: (member(unordered_pair(X0,X1),universal_class))),
% 0.18/0.49 inference(cnf_transformation,[status(thm)],[f11])).
% 0.18/0.49 fof(f252,plain,(
% 0.18/0.49 ![X]: (member(X,universal_class)|(![Y]: unordered_pair(X,Y)=singleton(Y)))),
% 0.18/0.49 inference(miniscoping,[status(thm)],[f112])).
% 0.18/0.49 fof(f253,plain,(
% 0.18/0.49 ![X0,X1]: (member(X0,universal_class)|unordered_pair(X0,X1)=singleton(X1))),
% 0.18/0.49 inference(cnf_transformation,[status(thm)],[f252])).
% 0.18/0.49 fof(f267,plain,(
% 0.18/0.49 ~member(singleton(x),universal_class)),
% 0.18/0.49 inference(cnf_transformation,[status(thm)],[f120])).
% 0.18/0.49 fof(f296,plain,(
% 0.18/0.49 ![X0]: (unordered_pair(singleton(x),X0)=singleton(X0))),
% 0.18/0.49 inference(resolution,[status(thm)],[f253,f267])).
% 0.18/0.49 fof(f330,plain,(
% 0.18/0.49 ![X0]: (member(singleton(X0),universal_class))),
% 0.18/0.49 inference(paramodulation,[status(thm)],[f296,f135])).
% 0.18/0.49 fof(f335,plain,(
% 0.18/0.49 $false),
% 0.18/0.49 inference(backward_subsumption_resolution,[status(thm)],[f267,f330])).
% 0.18/0.49 % SZS output end CNFRefutation for theBenchmark.p
% 0.25/0.58 % Elapsed time: 0.126141 seconds
% 0.25/0.58 % CPU time: 0.111789 seconds
% 0.25/0.58 % Total memory used: 3.359 MB
% 0.25/0.58 % Net memory used: 3.357 MB
%------------------------------------------------------------------------------