TSTP Solution File: REL004+3 by Drodi---3.5.1

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Drodi---3.5.1
% Problem  : REL004+3 : TPTP v8.1.2. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s

% Computer : n019.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Wed May 31 12:32:13 EDT 2023

% Result   : Theorem 0.16s 0.48s
% Output   : CNFRefutation 0.16s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   38
%            Number of leaves      :   12
% Syntax   : Number of formulae    :  127 ( 127 unt;   0 def)
%            Number of atoms       :  127 ( 126 equ)
%            Maximal formula atoms :    1 (   1 avg)
%            Number of connectives :    5 (   5   ~;   0   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    4 (   2 avg)
%            Maximal term depth    :    9 (   2 avg)
%            Number of predicates  :    2 (   0 usr;   1 prp; 0-2 aty)
%            Number of functors    :    9 (   9 usr;   4 con; 0-2 aty)
%            Number of variables   :  179 (; 178   !;   1   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f1,axiom,
    ! [X0,X1] : join(X0,X1) = join(X1,X0),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f2,axiom,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(join(X0,X1),X2),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f3,axiom,
    ! [X0,X1] : X0 = join(complement(join(complement(X0),complement(X1))),complement(join(complement(X0),X1))),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f4,axiom,
    ! [X0,X1] : meet(X0,X1) = complement(join(complement(X0),complement(X1))),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f6,axiom,
    ! [X0] : composition(X0,one) = X0,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f8,axiom,
    ! [X0] : converse(converse(X0)) = X0,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f9,axiom,
    ! [X0,X1] : converse(join(X0,X1)) = join(converse(X0),converse(X1)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f10,axiom,
    ! [X0,X1] : converse(composition(X0,X1)) = composition(converse(X1),converse(X0)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f11,axiom,
    ! [X0,X1] : join(composition(converse(X0),complement(composition(X0,X1))),complement(X1)) = complement(X1),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f12,axiom,
    ! [X0] : top = join(X0,complement(X0)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f13,axiom,
    ! [X0] : zero = meet(X0,complement(X0)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f17,conjecture,
    ! [X0] : converse(complement(X0)) = complement(converse(X0)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f18,negated_conjecture,
    ~ ! [X0] : converse(complement(X0)) = complement(converse(X0)),
    inference(negated_conjecture,[status(cth)],[f17]) ).

fof(f19,plain,
    ! [X0,X1] : join(X0,X1) = join(X1,X0),
    inference(cnf_transformation,[status(esa)],[f1]) ).

fof(f20,plain,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(join(X0,X1),X2),
    inference(cnf_transformation,[status(esa)],[f2]) ).

fof(f21,plain,
    ! [X0,X1] : X0 = join(complement(join(complement(X0),complement(X1))),complement(join(complement(X0),X1))),
    inference(cnf_transformation,[status(esa)],[f3]) ).

fof(f22,plain,
    ! [X0,X1] : meet(X0,X1) = complement(join(complement(X0),complement(X1))),
    inference(cnf_transformation,[status(esa)],[f4]) ).

fof(f24,plain,
    ! [X0] : composition(X0,one) = X0,
    inference(cnf_transformation,[status(esa)],[f6]) ).

fof(f26,plain,
    ! [X0] : converse(converse(X0)) = X0,
    inference(cnf_transformation,[status(esa)],[f8]) ).

fof(f27,plain,
    ! [X0,X1] : converse(join(X0,X1)) = join(converse(X0),converse(X1)),
    inference(cnf_transformation,[status(esa)],[f9]) ).

fof(f28,plain,
    ! [X0,X1] : converse(composition(X0,X1)) = composition(converse(X1),converse(X0)),
    inference(cnf_transformation,[status(esa)],[f10]) ).

fof(f29,plain,
    ! [X0,X1] : join(composition(converse(X0),complement(composition(X0,X1))),complement(X1)) = complement(X1),
    inference(cnf_transformation,[status(esa)],[f11]) ).

fof(f30,plain,
    ! [X0] : top = join(X0,complement(X0)),
    inference(cnf_transformation,[status(esa)],[f12]) ).

fof(f31,plain,
    ! [X0] : zero = meet(X0,complement(X0)),
    inference(cnf_transformation,[status(esa)],[f13]) ).

fof(f35,plain,
    ? [X0] : converse(complement(X0)) != complement(converse(X0)),
    inference(pre_NNF_transformation,[status(esa)],[f18]) ).

fof(f36,plain,
    converse(complement(sk0_0)) != complement(converse(sk0_0)),
    inference(skolemization,[status(esa)],[f35]) ).

fof(f37,plain,
    converse(complement(sk0_0)) != complement(converse(sk0_0)),
    inference(cnf_transformation,[status(esa)],[f36]) ).

fof(f38,plain,
    ! [X0,X1] : X0 = join(complement(join(complement(X0),X1)),complement(join(complement(X0),complement(X1)))),
    inference(forward_demodulation,[status(thm)],[f19,f21]) ).

fof(f39,plain,
    ! [X0,X1] : join(complement(X0),composition(converse(X1),complement(composition(X1,X0)))) = complement(X0),
    inference(forward_demodulation,[status(thm)],[f19,f29]) ).

fof(f40,plain,
    ! [X0,X1] : X0 = join(complement(join(complement(X0),X1)),meet(X0,X1)),
    inference(backward_demodulation,[status(thm)],[f22,f38]) ).

fof(f41,plain,
    ! [X0,X1] : X0 = join(meet(X0,X1),complement(join(complement(X0),X1))),
    inference(forward_demodulation,[status(thm)],[f19,f40]) ).

fof(f42,plain,
    ! [X0,X1,X2] : meet(join(complement(X0),complement(X1)),X2) = complement(join(meet(X0,X1),complement(X2))),
    inference(paramodulation,[status(thm)],[f22,f22]) ).

fof(f44,plain,
    ! [X0,X1] : converse(join(converse(X0),X1)) = join(X0,converse(X1)),
    inference(paramodulation,[status(thm)],[f26,f27]) ).

fof(f47,plain,
    ! [X0,X1] : converse(composition(converse(X0),X1)) = composition(converse(X1),X0),
    inference(paramodulation,[status(thm)],[f26,f28]) ).

fof(f48,plain,
    ! [X0,X1,X2] : join(meet(X0,X1),composition(converse(X2),complement(composition(X2,join(complement(X0),complement(X1)))))) = complement(join(complement(X0),complement(X1))),
    inference(paramodulation,[status(thm)],[f22,f39]) ).

fof(f49,plain,
    ! [X0,X1,X2] : join(meet(X0,X1),composition(converse(X2),complement(composition(X2,join(complement(X0),complement(X1)))))) = meet(X0,X1),
    inference(forward_demodulation,[status(thm)],[f22,f48]) ).

fof(f50,plain,
    ! [X0,X1] : join(complement(X0),composition(X1,complement(composition(converse(X1),X0)))) = complement(X0),
    inference(paramodulation,[status(thm)],[f26,f39]) ).

fof(f110,plain,
    ! [X0,X1] : X0 = join(meet(X0,complement(X1)),meet(X0,X1)),
    inference(paramodulation,[status(thm)],[f22,f41]) ).

fof(f111,plain,
    ! [X0,X1] : X0 = join(meet(X0,X1),meet(X0,complement(X1))),
    inference(forward_demodulation,[status(thm)],[f19,f110]) ).

fof(f112,plain,
    ! [X0,X1] : X0 = join(meet(X0,composition(converse(X1),complement(composition(X1,X0)))),complement(complement(X0))),
    inference(paramodulation,[status(thm)],[f39,f41]) ).

fof(f113,plain,
    ! [X0,X1] : X0 = join(complement(complement(X0)),meet(X0,composition(converse(X1),complement(composition(X1,X0))))),
    inference(forward_demodulation,[status(thm)],[f19,f112]) ).

fof(f252,plain,
    ! [X0] : converse(converse(X0)) = composition(converse(one),X0),
    inference(paramodulation,[status(thm)],[f24,f47]) ).

fof(f253,plain,
    ! [X0] : X0 = composition(converse(one),X0),
    inference(forward_demodulation,[status(thm)],[f26,f252]) ).

fof(f257,plain,
    ! [X0,X1] : top = join(join(complement(X0),complement(X1)),meet(X0,X1)),
    inference(paramodulation,[status(thm)],[f22,f30]) ).

fof(f258,plain,
    ! [X0,X1] : top = join(complement(X0),join(complement(X1),meet(X0,X1))),
    inference(forward_demodulation,[status(thm)],[f20,f257]) ).

fof(f259,plain,
    ! [X0] : converse(top) = join(X0,converse(complement(converse(X0)))),
    inference(paramodulation,[status(thm)],[f30,f44]) ).

fof(f263,plain,
    ! [X0,X1] : meet(top,X0) = complement(join(meet(X1,complement(X1)),complement(X0))),
    inference(paramodulation,[status(thm)],[f30,f42]) ).

fof(f264,plain,
    ! [X0] : meet(top,X0) = complement(join(zero,complement(X0))),
    inference(forward_demodulation,[status(thm)],[f31,f263]) ).

fof(f269,plain,
    ! [X0] : meet(X0,complement(X0)) = complement(top),
    inference(paramodulation,[status(thm)],[f30,f22]) ).

fof(f270,plain,
    zero = complement(top),
    inference(forward_demodulation,[status(thm)],[f31,f269]) ).

fof(f271,plain,
    ! [X0] : X0 = join(meet(X0,complement(complement(X0))),complement(top)),
    inference(paramodulation,[status(thm)],[f30,f41]) ).

fof(f272,plain,
    ! [X0] : X0 = join(complement(top),meet(X0,complement(complement(X0)))),
    inference(forward_demodulation,[status(thm)],[f19,f271]) ).

fof(f273,plain,
    ! [X0] : X0 = join(zero,meet(X0,complement(complement(X0)))),
    inference(forward_demodulation,[status(thm)],[f270,f272]) ).

fof(f341,plain,
    one = converse(one),
    inference(paramodulation,[status(thm)],[f24,f253]) ).

fof(f346,plain,
    ! [X0] : join(complement(X0),composition(one,complement(X0))) = complement(X0),
    inference(paramodulation,[status(thm)],[f253,f50]) ).

fof(f349,plain,
    ! [X0,X1] : join(meet(X0,X1),composition(converse(converse(one)),complement(join(complement(X0),complement(X1))))) = meet(X0,X1),
    inference(paramodulation,[status(thm)],[f253,f49]) ).

fof(f350,plain,
    ! [X0,X1] : join(meet(X0,X1),composition(one,complement(join(complement(X0),complement(X1))))) = meet(X0,X1),
    inference(forward_demodulation,[status(thm)],[f26,f349]) ).

fof(f351,plain,
    ! [X0,X1] : join(meet(X0,X1),composition(one,meet(X0,X1))) = meet(X0,X1),
    inference(forward_demodulation,[status(thm)],[f22,f350]) ).

fof(f362,plain,
    ! [X0] : X0 = join(complement(complement(X0)),meet(X0,composition(converse(converse(one)),complement(X0)))),
    inference(paramodulation,[status(thm)],[f253,f113]) ).

fof(f363,plain,
    ! [X0] : X0 = join(complement(complement(X0)),meet(X0,composition(one,complement(X0)))),
    inference(forward_demodulation,[status(thm)],[f26,f362]) ).

fof(f366,plain,
    ! [X0] : X0 = composition(one,X0),
    inference(backward_demodulation,[status(thm)],[f341,f253]) ).

fof(f367,plain,
    ! [X0,X1] : join(meet(X0,X1),meet(X0,X1)) = meet(X0,X1),
    inference(backward_demodulation,[status(thm)],[f366,f351]) ).

fof(f370,plain,
    ! [X0] : X0 = join(complement(complement(X0)),meet(X0,complement(X0))),
    inference(backward_demodulation,[status(thm)],[f366,f363]) ).

fof(f371,plain,
    ! [X0] : X0 = join(complement(complement(X0)),zero),
    inference(forward_demodulation,[status(thm)],[f31,f370]) ).

fof(f372,plain,
    ! [X0] : X0 = join(zero,complement(complement(X0))),
    inference(forward_demodulation,[status(thm)],[f19,f371]) ).

fof(f373,plain,
    ! [X0] : join(complement(X0),complement(X0)) = complement(X0),
    inference(backward_demodulation,[status(thm)],[f366,f346]) ).

fof(f450,plain,
    ! [X0,X1] : meet(X0,X1) = complement(join(complement(X1),complement(X0))),
    inference(paramodulation,[status(thm)],[f19,f22]) ).

fof(f451,plain,
    ! [X0,X1] : meet(X0,X1) = meet(X1,X0),
    inference(forward_demodulation,[status(thm)],[f22,f450]) ).

fof(f481,plain,
    ! [X0,X1] : X0 = join(meet(X0,X1),meet(complement(X1),X0)),
    inference(paramodulation,[status(thm)],[f451,f111]) ).

fof(f484,plain,
    ! [X0,X1] : X0 = join(meet(X1,X0),meet(X0,complement(X1))),
    inference(paramodulation,[status(thm)],[f451,f111]) ).

fof(f512,plain,
    ! [X0] : meet(X0,X0) = complement(complement(X0)),
    inference(paramodulation,[status(thm)],[f373,f22]) ).

fof(f583,plain,
    ! [X0,X1] : join(X0,join(complement(X0),X1)) = join(top,X1),
    inference(paramodulation,[status(thm)],[f30,f20]) ).

fof(f720,plain,
    ! [X0,X1] : join(complement(X0),complement(X1)) = join(zero,complement(join(meet(X0,X1),complement(complement(complement(join(complement(X0),complement(X1)))))))),
    inference(paramodulation,[status(thm)],[f42,f273]) ).

fof(f721,plain,
    ! [X0,X1] : join(complement(X0),complement(X1)) = join(zero,complement(join(meet(X0,X1),complement(complement(meet(X0,X1)))))),
    inference(forward_demodulation,[status(thm)],[f22,f720]) ).

fof(f746,plain,
    ! [X0] : X0 = join(meet(X0,converse(complement(converse(complement(X0))))),complement(converse(top))),
    inference(paramodulation,[status(thm)],[f259,f41]) ).

fof(f747,plain,
    ! [X0] : X0 = join(complement(converse(top)),meet(X0,converse(complement(converse(complement(X0)))))),
    inference(forward_demodulation,[status(thm)],[f19,f746]) ).

fof(f763,plain,
    ! [X0,X1] : join(meet(X0,X1),meet(X1,X0)) = meet(X1,X0),
    inference(paramodulation,[status(thm)],[f451,f367]) ).

fof(f847,plain,
    ! [X0] : complement(complement(X0)) = join(meet(complement(complement(X0)),X0),zero),
    inference(paramodulation,[status(thm)],[f31,f481]) ).

fof(f848,plain,
    ! [X0] : complement(complement(X0)) = join(zero,meet(complement(complement(X0)),X0)),
    inference(forward_demodulation,[status(thm)],[f19,f847]) ).

fof(f849,plain,
    ! [X0] : complement(complement(X0)) = join(zero,meet(X0,complement(complement(X0)))),
    inference(forward_demodulation,[status(thm)],[f451,f848]) ).

fof(f850,plain,
    ! [X0] : complement(complement(X0)) = X0,
    inference(forward_demodulation,[status(thm)],[f273,f849]) ).

fof(f853,plain,
    ! [X0] : complement(X0) = join(meet(complement(X0),X0),complement(complement(complement(X0)))),
    inference(paramodulation,[status(thm)],[f512,f481]) ).

fof(f854,plain,
    ! [X0] : complement(X0) = join(complement(complement(complement(X0))),meet(complement(X0),X0)),
    inference(forward_demodulation,[status(thm)],[f19,f853]) ).

fof(f855,plain,
    ! [X0] : complement(X0) = join(complement(X0),meet(complement(X0),X0)),
    inference(forward_demodulation,[status(thm)],[f850,f854]) ).

fof(f856,plain,
    ! [X0] : complement(X0) = join(complement(X0),meet(X0,complement(X0))),
    inference(forward_demodulation,[status(thm)],[f451,f855]) ).

fof(f857,plain,
    ! [X0] : complement(X0) = join(complement(X0),zero),
    inference(forward_demodulation,[status(thm)],[f31,f856]) ).

fof(f858,plain,
    ! [X0] : complement(X0) = join(zero,complement(X0)),
    inference(forward_demodulation,[status(thm)],[f19,f857]) ).

fof(f870,plain,
    ! [X0] : X0 = join(zero,X0),
    inference(backward_demodulation,[status(thm)],[f850,f372]) ).

fof(f872,plain,
    ! [X0,X1] : join(complement(X0),complement(X1)) = join(zero,complement(join(meet(X0,X1),meet(X0,X1)))),
    inference(backward_demodulation,[status(thm)],[f850,f721]) ).

fof(f873,plain,
    ! [X0,X1] : join(complement(X0),complement(X1)) = complement(join(meet(X0,X1),meet(X0,X1))),
    inference(forward_demodulation,[status(thm)],[f858,f872]) ).

fof(f874,plain,
    ! [X0,X1] : join(complement(X0),complement(X1)) = complement(meet(X0,X1)),
    inference(forward_demodulation,[status(thm)],[f367,f873]) ).

fof(f908,plain,
    ! [X0] : meet(top,X0) = complement(complement(X0)),
    inference(backward_demodulation,[status(thm)],[f858,f264]) ).

fof(f909,plain,
    ! [X0] : meet(top,X0) = X0,
    inference(forward_demodulation,[status(thm)],[f850,f908]) ).

fof(f1041,plain,
    ! [X0] : meet(X0,top) = X0,
    inference(paramodulation,[status(thm)],[f451,f909]) ).

fof(f1057,plain,
    ! [X0] : join(meet(X0,top),X0) = meet(top,X0),
    inference(paramodulation,[status(thm)],[f909,f763]) ).

fof(f1058,plain,
    ! [X0] : join(X0,meet(X0,top)) = meet(top,X0),
    inference(forward_demodulation,[status(thm)],[f19,f1057]) ).

fof(f1059,plain,
    ! [X0] : join(X0,X0) = meet(top,X0),
    inference(forward_demodulation,[status(thm)],[f1041,f1058]) ).

fof(f1060,plain,
    ! [X0] : join(X0,X0) = X0,
    inference(forward_demodulation,[status(thm)],[f909,f1059]) ).

fof(f1102,plain,
    ! [X0,X1] : join(X0,join(X0,X1)) = join(X0,X1),
    inference(paramodulation,[status(thm)],[f1060,f20]) ).

fof(f1552,plain,
    ! [X0,X1] : join(X0,top) = join(top,join(complement(X1),meet(X0,X1))),
    inference(paramodulation,[status(thm)],[f258,f583]) ).

fof(f1563,plain,
    ! [X0] : join(X0,converse(top)) = join(top,converse(complement(converse(complement(X0))))),
    inference(paramodulation,[status(thm)],[f259,f583]) ).

fof(f1568,plain,
    ! [X0] : join(X0,complement(X0)) = join(top,complement(X0)),
    inference(paramodulation,[status(thm)],[f1060,f583]) ).

fof(f1569,plain,
    ! [X0] : top = join(top,complement(X0)),
    inference(forward_demodulation,[status(thm)],[f30,f1568]) ).

fof(f1608,plain,
    ! [X0] : top = join(top,X0),
    inference(paramodulation,[status(thm)],[f850,f1569]) ).

fof(f1617,plain,
    ! [X0] : join(X0,converse(top)) = top,
    inference(backward_demodulation,[status(thm)],[f1608,f1563]) ).

fof(f1618,plain,
    ! [X0] : join(X0,top) = top,
    inference(backward_demodulation,[status(thm)],[f1608,f1552]) ).

fof(f1660,plain,
    ! [X0] : converse(top) = join(X0,converse(top)),
    inference(paramodulation,[status(thm)],[f1618,f44]) ).

fof(f1661,plain,
    converse(top) = top,
    inference(forward_demodulation,[status(thm)],[f1617,f1660]) ).

fof(f1694,plain,
    ! [X0] : X0 = join(complement(top),meet(X0,converse(complement(converse(complement(X0)))))),
    inference(backward_demodulation,[status(thm)],[f1661,f747]) ).

fof(f1695,plain,
    ! [X0] : X0 = join(zero,meet(X0,converse(complement(converse(complement(X0)))))),
    inference(forward_demodulation,[status(thm)],[f270,f1694]) ).

fof(f1696,plain,
    ! [X0] : X0 = meet(X0,converse(complement(converse(complement(X0))))),
    inference(forward_demodulation,[status(thm)],[f870,f1695]) ).

fof(f2492,plain,
    ! [X0,X1] : join(X0,complement(X1)) = complement(meet(complement(X0),X1)),
    inference(paramodulation,[status(thm)],[f850,f874]) ).

fof(f2733,plain,
    ! [X0,X1] : join(meet(X0,X1),X1) = join(meet(X0,X1),meet(X1,complement(X0))),
    inference(paramodulation,[status(thm)],[f484,f1102]) ).

fof(f2734,plain,
    ! [X0,X1] : join(X0,meet(X1,X0)) = join(meet(X1,X0),meet(X0,complement(X1))),
    inference(forward_demodulation,[status(thm)],[f19,f2733]) ).

fof(f2735,plain,
    ! [X0,X1] : join(X0,meet(X1,X0)) = X0,
    inference(forward_demodulation,[status(thm)],[f484,f2734]) ).

fof(f2844,plain,
    ! [X0,X1] : converse(converse(X0)) = join(X0,converse(meet(X1,converse(X0)))),
    inference(paramodulation,[status(thm)],[f2735,f44]) ).

fof(f2845,plain,
    ! [X0,X1] : X0 = join(X0,converse(meet(X1,converse(X0)))),
    inference(forward_demodulation,[status(thm)],[f26,f2844]) ).

fof(f2865,plain,
    ! [X0] : complement(converse(complement(X0))) = join(complement(converse(complement(X0))),converse(X0)),
    inference(paramodulation,[status(thm)],[f1696,f2845]) ).

fof(f2866,plain,
    ! [X0] : complement(converse(complement(X0))) = join(converse(X0),complement(converse(complement(X0)))),
    inference(forward_demodulation,[status(thm)],[f19,f2865]) ).

fof(f4208,plain,
    ! [X0] : join(X0,complement(converse(complement(converse(complement(complement(X0))))))) = complement(complement(X0)),
    inference(paramodulation,[status(thm)],[f1696,f2492]) ).

fof(f4209,plain,
    ! [X0] : join(X0,complement(converse(complement(converse(X0))))) = complement(complement(X0)),
    inference(forward_demodulation,[status(thm)],[f850,f4208]) ).

fof(f4210,plain,
    ! [X0] : join(X0,complement(converse(complement(converse(X0))))) = X0,
    inference(forward_demodulation,[status(thm)],[f850,f4209]) ).

fof(f4323,plain,
    ! [X0] : join(converse(X0),complement(converse(complement(X0)))) = converse(X0),
    inference(paramodulation,[status(thm)],[f26,f4210]) ).

fof(f4324,plain,
    ! [X0] : complement(converse(complement(X0))) = converse(X0),
    inference(forward_demodulation,[status(thm)],[f2866,f4323]) ).

fof(f4435,plain,
    ! [X0] : complement(converse(X0)) = converse(complement(X0)),
    inference(paramodulation,[status(thm)],[f850,f4324]) ).

fof(f4499,plain,
    complement(converse(sk0_0)) != complement(converse(sk0_0)),
    inference(backward_demodulation,[status(thm)],[f4435,f37]) ).

fof(f4500,plain,
    $false,
    inference(trivial_equality_resolution,[status(esa)],[f4499]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.09/0.10  % Problem  : REL004+3 : TPTP v8.1.2. Released v4.0.0.
% 0.09/0.11  % Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s
% 0.10/0.31  % Computer : n019.cluster.edu
% 0.10/0.31  % Model    : x86_64 x86_64
% 0.10/0.31  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.31  % Memory   : 8042.1875MB
% 0.10/0.31  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.10/0.31  % CPULimit : 300
% 0.10/0.31  % WCLimit  : 300
% 0.10/0.31  % DateTime : Tue May 30 10:05:55 EDT 2023
% 0.10/0.31  % CPUTime  : 
% 0.16/0.32  % Drodi V3.5.1
% 0.16/0.48  % Refutation found
% 0.16/0.48  % SZS status Theorem for theBenchmark: Theorem is valid
% 0.16/0.48  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.16/0.51  % Elapsed time: 0.182758 seconds
% 0.16/0.51  % CPU time: 1.081418 seconds
% 0.16/0.51  % Memory used: 22.069 MB
%------------------------------------------------------------------------------