%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : SET082-7 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n007.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 02:11:29 PM UTC 2026
% Result : Unsatisfiable 0.10s 0.40s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET082-7 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.04 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.10/0.37 % Computer : n007.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 04:48:51 UTC 2026
% 0.10/0.37 % CPUTime :
% 0.10/0.38 % Drodi V4.1.1
% 0.10/0.40 % Refutation found
% 0.10/0.40 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.10/0.40 % SZS output start CNFRefutation for theBenchmark
% 0.10/0.40 fof(f12,axiom,(
% 0.10/0.40 (![X]: (unordered_pair(X,X) = singleton(X) ))),
% 0.10/0.40 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.10/0.40 fof(f113,axiom,(
% 0.10/0.40 (![X,Y]: (( unordered_pair(X,Y) = null_class| member(X,universal_class)| member(Y,universal_class) ) ))),
% 0.10/0.40 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.10/0.40 fof(f126,negated_conjecture,(
% 0.10/0.40 ~ member(x,universal_class) ),
% 0.10/0.40 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.10/0.40 fof(f127,negated_conjecture,(
% 0.10/0.40 singleton(x) != null_class ),
% 0.10/0.40 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.10/0.40 fof(f143,plain,(
% 0.10/0.40 ![X0]: (unordered_pair(X0,X0)=singleton(X0))),
% 0.10/0.40 inference(cnf_transformation,[status(thm)],[f12])).
% 0.10/0.40 fof(f261,plain,(
% 0.10/0.40 ![Y]: ((![X]: (unordered_pair(X,Y)=null_class|member(X,universal_class)))|member(Y,universal_class))),
% 0.10/0.40 inference(miniscoping,[status(thm)],[f113])).
% 0.10/0.40 fof(f262,plain,(
% 0.10/0.40 ![X0,X1]: (unordered_pair(X0,X1)=null_class|member(X0,universal_class)|member(X1,universal_class))),
% 0.10/0.40 inference(cnf_transformation,[status(thm)],[f261])).
% 0.10/0.40 fof(f280,plain,(
% 0.10/0.40 ~member(x,universal_class)),
% 0.10/0.40 inference(cnf_transformation,[status(thm)],[f126])).
% 0.10/0.40 fof(f281,plain,(
% 0.10/0.40 ~singleton(x)=null_class),
% 0.10/0.40 inference(cnf_transformation,[status(thm)],[f127])).
% 0.10/0.40 fof(f319,plain,(
% 0.10/0.40 unordered_pair(x,x)=null_class),
% 0.10/0.40 inference(resolution,[status(thm)],[f262,f280])).
% 0.10/0.40 fof(f327,plain,(
% 0.10/0.40 singleton(x)=null_class),
% 0.10/0.40 inference(forward_demodulation,[status(thm)],[f143,f319])).
% 0.10/0.40 fof(f328,plain,(
% 0.10/0.40 $false),
% 0.10/0.40 inference(forward_subsumption_resolution,[status(thm)],[f327,f281])).
% 0.10/0.40 % SZS output end CNFRefutation for theBenchmark.p
% 0.10/0.42 % Elapsed time: 0.044015 seconds
% 0.10/0.42 % CPU time: 0.143691 seconds
% 0.10/0.42 % Total memory used: 105.972 MB
% 0.10/0.42 % Net memory used: 105.893 MB
%------------------------------------------------------------------------------