%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : SET063-6 : 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 : n018.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 02:11:24 PM UTC 2026
% Result : Unsatisfiable 0.16s 11.08s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET063-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.04 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.10/10.98 % Computer : n018.cluster.edu
% 0.10/10.98 % Model : x86_64 x86_64
% 0.10/10.98 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/10.98 % Memory : 8046.5625MB
% 0.10/10.98 % OS : Linux 6.8.0-71-generic
% 0.10/10.98 % CPULimit : 300
% 0.10/10.98 % WCLimit : 300
% 0.10/10.98 % DateTime : Mon Sep 21 04:51:11 UTC 2026
% 0.10/10.98 % CPUTime :
% 0.10/11.00 % Drodi V4.1.1
% 0.16/11.08 % Refutation found
% 0.16/11.08 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.16/11.08 % SZS output start CNFRefutation for theBenchmark
% 0.16/11.08 fof(f1,axiom,(
% 0.16/11.08 (![X,Y,U]: (( ~ subclass(X,Y)| ~ member(U,X)| member(U,Y) ) ))),
% 0.16/11.08 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.16/11.08 fof(f2,axiom,(
% 0.16/11.08 (![X,Y]: (( member(not_subclass_element(X,Y),X)| subclass(X,Y) ) ))),
% 0.16/11.08 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.16/11.08 fof(f7,axiom,(
% 0.16/11.08 (![X,Y]: (( ~ subclass(X,Y)| ~ subclass(Y,X)| X = Y ) ))),
% 0.16/11.08 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.16/11.08 fof(f21,axiom,(
% 0.16/11.08 (![Z,X,Y]: (( ~ member(Z,intersection(X,Y))| member(Z,X) ) ))),
% 0.16/11.08 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.16/11.08 fof(f24,axiom,(
% 0.16/11.08 (![Z,X]: (( ~ member(Z,complement(X))| ~ member(Z,X) ) ))),
% 0.16/11.08 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.16/11.08 fof(f66,axiom,(
% 0.16/11.08 (![X]: (( X = null_class| member(regular(X),X) ) ))),
% 0.16/11.08 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.16/11.08 fof(f67,axiom,(
% 0.16/11.08 (![X]: (( X = null_class| intersection(X,regular(X)) = null_class ) ))),
% 0.16/11.08 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.16/11.08 fof(f92,negated_conjecture,(
% 0.16/11.08 subclass(x,null_class) ),
% 0.16/11.08 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.16/11.08 fof(f93,negated_conjecture,(
% 0.16/11.08 x != null_class ),
% 0.16/11.08 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.16/11.08 fof(f94,plain,(
% 0.16/11.08 ![Y,U]: ((![X]: (~subclass(X,Y)|~member(U,X)))|member(U,Y))),
% 0.16/11.08 inference(miniscoping,[status(thm)],[f1])).
% 0.16/11.08 fof(f95,plain,(
% 0.16/11.08 ![X0,X1,X2]: (~subclass(X0,X1)|~member(X2,X0)|member(X2,X1))),
% 0.16/11.08 inference(cnf_transformation,[status(thm)],[f94])).
% 0.16/11.08 fof(f96,plain,(
% 0.16/11.08 ![X0,X1]: (member(not_subclass_element(X0,X1),X0)|subclass(X0,X1))),
% 0.16/11.08 inference(cnf_transformation,[status(thm)],[f2])).
% 0.16/11.08 fof(f101,plain,(
% 0.16/11.08 ![X0,X1]: (~subclass(X0,X1)|~subclass(X1,X0)|X0=X1)),
% 0.16/11.08 inference(cnf_transformation,[status(thm)],[f7])).
% 0.16/11.08 fof(f121,plain,(
% 0.16/11.08 ![Z,X]: ((![Y]: ~member(Z,intersection(X,Y)))|member(Z,X))),
% 0.16/11.08 inference(miniscoping,[status(thm)],[f21])).
% 0.16/11.08 fof(f122,plain,(
% 0.16/11.08 ![X0,X1,X2]: (~member(X0,intersection(X1,X2))|member(X0,X1))),
% 0.16/11.08 inference(cnf_transformation,[status(thm)],[f121])).
% 0.16/11.08 fof(f126,plain,(
% 0.16/11.08 ![X0,X1]: (~member(X0,complement(X1))|~member(X0,X1))),
% 0.16/11.08 inference(cnf_transformation,[status(thm)],[f24])).
% 0.16/11.08 fof(f168,plain,(
% 0.16/11.08 ![X0]: (X0=null_class|member(regular(X0),X0))),
% 0.16/11.08 inference(cnf_transformation,[status(thm)],[f66])).
% 0.16/11.08 fof(f169,plain,(
% 0.16/11.08 ![X0]: (X0=null_class|intersection(X0,regular(X0))=null_class)),
% 0.16/11.08 inference(cnf_transformation,[status(thm)],[f67])).
% 0.16/11.08 fof(f199,plain,(
% 0.16/11.08 subclass(x,null_class)),
% 0.16/11.08 inference(cnf_transformation,[status(thm)],[f92])).
% 0.16/11.08 fof(f200,plain,(
% 0.16/11.08 ~x=null_class),
% 0.16/11.08 inference(cnf_transformation,[status(thm)],[f93])).
% 0.16/11.08 fof(f207,plain,(
% 0.16/11.08 ~subclass(null_class,x)|null_class=x),
% 0.16/11.08 inference(resolution,[status(thm)],[f101,f199])).
% 0.16/11.08 fof(f210,plain,(
% 0.16/11.08 ~subclass(null_class,x)),
% 0.16/11.08 inference(forward_subsumption_resolution,[status(thm)],[f207,f200])).
% 0.16/11.08 fof(f280,plain,(
% 0.16/11.08 ![X0,X1,X2,X3]: (member(X0,X1)|~subclass(X2,intersection(X1,X3))|~member(X0,X2))),
% 0.16/11.08 inference(resolution,[status(thm)],[f122,f95])).
% 0.16/11.08 fof(f330,plain,(
% 0.16/11.08 ![X0,X1,X2]: (member(X0,X1)|~subclass(X2,null_class)|~member(X0,X2)|X1=null_class)),
% 0.16/11.08 inference(paramodulation,[status(thm)],[f169,f280])).
% 0.16/11.08 fof(f332,plain,(
% 0.16/11.08 ![X0,X1]: (~member(X0,null_class)|member(X0,X1)|X1=null_class)),
% 0.16/11.08 inference(paramodulation,[status(thm)],[f169,f122])).
% 0.16/11.08 fof(f373,plain,(
% 0.16/11.08 ![X0,X1]: (member(X0,X1)|~member(X0,x)|X1=null_class)),
% 0.16/11.08 inference(resolution,[status(thm)],[f330,f199])).
% 0.16/11.08 fof(f375,plain,(
% 0.16/11.08 ![X0]: (member(regular(x),X0)|X0=null_class|x=null_class)),
% 0.16/11.08 inference(resolution,[status(thm)],[f373,f168])).
% 0.16/11.08 fof(f379,plain,(
% 0.16/11.08 ![X0]: (member(regular(x),X0)|X0=null_class)),
% 0.16/11.08 inference(forward_subsumption_resolution,[status(thm)],[f375,f200])).
% 0.16/11.08 fof(f385,plain,(
% 0.16/11.08 ![X0]: (complement(X0)=null_class|~member(regular(x),X0))),
% 0.16/11.08 inference(resolution,[status(thm)],[f379,f126])).
% 0.16/11.08 fof(f457,plain,(
% 0.16/11.08 ![X0]: (complement(X0)=null_class|X0=null_class)),
% 0.16/11.08 inference(resolution,[status(thm)],[f385,f379])).
% 0.16/11.08 fof(f473,plain,(
% 0.16/11.08 ![X0,X1]: (~member(X0,null_class)|~member(X0,X1)|X1=null_class)),
% 0.16/11.08 inference(paramodulation,[status(thm)],[f457,f126])).
% 0.16/11.08 fof(f479,plain,(
% 0.16/11.08 ![X0,X1]: (~member(X0,null_class)|X1=null_class)),
% 0.16/11.08 inference(forward_subsumption_resolution,[status(thm)],[f473,f332])).
% 0.16/11.08 fof(f491,plain,(
% 0.16/11.08 ![X0,X1]: (X0=null_class|subclass(null_class,X1))),
% 0.16/11.08 inference(resolution,[status(thm)],[f479,f96])).
% 0.16/11.08 fof(f510,plain,(
% 0.16/11.08 ![X0]: (X0=null_class)),
% 0.16/11.08 inference(resolution,[status(thm)],[f491,f210])).
% 0.16/11.08 fof(f528,plain,(
% 0.16/11.08 $false),
% 0.16/11.08 inference(backward_subsumption_resolution,[status(thm)],[f200,f510])).
% 0.16/11.08 % SZS output end CNFRefutation for theBenchmark.p
% 0.16/11.11 % Elapsed time: 0.108428 seconds
% 0.16/11.11 % CPU time: 0.517728 seconds
% 0.16/11.11 % Total memory used: 112.272 MB
% 0.16/11.11 % Net memory used: 111.096 MB
%------------------------------------------------------------------------------