%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : SEU161+3 : TPTP v9.3.1. Released v3.2.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n019.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 02:21:51 PM UTC 2026
% Result : Theorem 0.10s 0.38s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SEU161+3 : TPTP v9.3.1. Released v3.2.0.
% 0.00/0.04 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.10/0.36 % Computer : n019.cluster.edu
% 0.10/0.36 % Model : x86_64 x86_64
% 0.10/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.36 % Memory : 8046.5625MB
% 0.10/0.36 % OS : Linux 6.8.0-71-generic
% 0.10/0.36 % CPULimit : 300
% 0.10/0.36 % WCLimit : 300
% 0.10/0.36 % DateTime : Mon Sep 21 05:53:50 UTC 2026
% 0.10/0.37 % CPUTime :
% 0.10/0.37 % Drodi V4.1.1
% 0.10/0.38 % Refutation found
% 0.10/0.38 % SZS status Theorem for theBenchmark: Theorem is valid
% 0.10/0.38 % SZS output start CNFRefutation for theBenchmark
% 0.10/0.38 fof(f3,axiom,(
% 0.10/0.38 (! [A,B] : set_union2(A,B) = set_union2(B,A) )),
% 0.10/0.38 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.10/0.38 fof(f8,conjecture,(
% 0.10/0.38 (! [A,B] :( in(A,B)=> set_union2(singleton(A),B) = B ) )),
% 0.10/0.38 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.10/0.38 fof(f9,negated_conjecture,(
% 0.10/0.38 ~((! [A,B] :( in(A,B)=> set_union2(singleton(A),B) = B ) ))),
% 0.10/0.38 inference(negated_conjecture,[status(cth)],[f8])).
% 0.10/0.38 fof(f10,axiom,(
% 0.10/0.38 (! [A,B] :( in(A,B)=> set_union2(singleton(A),B) = B ) )),
% 0.10/0.38 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.10/0.38 fof(f17,plain,(
% 0.10/0.38 ![X0,X1]: (set_union2(X0,X1)=set_union2(X1,X0))),
% 0.10/0.38 inference(cnf_transformation,[status(thm)],[f3])).
% 0.10/0.38 fof(f26,plain,(
% 0.10/0.38 (?[A,B]: (in(A,B)&~set_union2(singleton(A),B)=B))),
% 0.10/0.38 inference(pre_NNF_transformation,[status(thm)],[f9])).
% 0.10/0.38 fof(f27,plain,(
% 0.10/0.38 (in(sK2_skl,sK3_skl)&~set_union2(singleton(sK2_skl),sK3_skl)=sK3_skl)),
% 0.10/0.38 inference(skolemize,[status(esa),new_symbols(skolem,[sK2_skl,sK3_skl]),skolemize(A,sK2_skl),skolemize(B,sK3_skl)],[f26])).
% 0.10/0.38 fof(f28,plain,(
% 0.10/0.38 in(sK2_skl,sK3_skl)),
% 0.10/0.38 inference(cnf_transformation,[status(thm)],[f27])).
% 0.10/0.38 fof(f29,plain,(
% 0.10/0.38 ~set_union2(singleton(sK2_skl),sK3_skl)=sK3_skl),
% 0.10/0.38 inference(cnf_transformation,[status(thm)],[f27])).
% 0.10/0.38 fof(f30,plain,(
% 0.10/0.38 ![A,B]: (~in(A,B)|set_union2(singleton(A),B)=B)),
% 0.10/0.38 inference(pre_NNF_transformation,[status(thm)],[f10])).
% 0.10/0.38 fof(f31,plain,(
% 0.10/0.38 ![X0,X1]: (~in(X0,X1)|set_union2(singleton(X0),X1)=X1)),
% 0.10/0.38 inference(cnf_transformation,[status(thm)],[f30])).
% 0.10/0.38 fof(f32,plain,(
% 0.10/0.38 ~set_union2(sK3_skl,singleton(sK2_skl))=sK3_skl),
% 0.10/0.38 inference(forward_demodulation,[status(thm)],[f17,f29])).
% 0.10/0.38 fof(f45,plain,(
% 0.10/0.38 set_union2(singleton(sK2_skl),sK3_skl)=sK3_skl),
% 0.10/0.38 inference(resolution,[status(thm)],[f31,f28])).
% 0.10/0.38 fof(f46,plain,(
% 0.10/0.38 set_union2(sK3_skl,singleton(sK2_skl))=sK3_skl),
% 0.10/0.38 inference(forward_demodulation,[status(thm)],[f17,f45])).
% 0.10/0.38 fof(f47,plain,(
% 0.10/0.38 $false),
% 0.10/0.38 inference(forward_subsumption_resolution,[status(thm)],[f46,f32])).
% 0.10/0.38 % SZS output end CNFRefutation for theBenchmark.p
% 0.10/0.41 % Elapsed time: 0.035199 seconds
% 0.10/0.41 % CPU time: 0.071153 seconds
% 0.10/0.41 % Total memory used: 4.151 MB
% 0.10/0.41 % Net memory used: 4.132 MB
%------------------------------------------------------------------------------