TSTP Solution File: GRP425-1 by Drodi---3.5.1

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Drodi---3.5.1
% Problem  : GRP425-1 : TPTP v8.1.2. Released v2.6.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s

% Computer : n028.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 12:11:38 EDT 2023

% Result   : Unsatisfiable 20.45s 2.98s
% Output   : CNFRefutation 21.00s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   34
%            Number of leaves      :    2
% Syntax   : Number of formulae    :   64 (  64 unt;   0 def)
%            Number of atoms       :   64 (  63 equ)
%            Maximal formula atoms :    1 (   1 avg)
%            Number of connectives :    6 (   6   ~;   0   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    8 (   5 avg)
%            Maximal term depth    :   20 (   4 avg)
%            Number of predicates  :    2 (   0 usr;   1 prp; 0-2 aty)
%            Number of functors    :    4 (   4 usr;   2 con; 0-2 aty)
%            Number of variables   :  226 (; 226   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f1,axiom,
    ! [A,B,C] : multiply(inverse(multiply(inverse(multiply(A,inverse(multiply(inverse(B),C)))),multiply(A,inverse(C)))),inverse(multiply(inverse(C),C))) = B,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f2,negated_conjecture,
    multiply(multiply(inverse(b2),b2),a2) != a2,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f3,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(inverse(multiply(X0,inverse(multiply(inverse(X1),X2)))),multiply(X0,inverse(X2)))),inverse(multiply(inverse(X2),X2))) = X1,
    inference(cnf_transformation,[status(esa)],[f1]) ).

fof(f4,plain,
    multiply(multiply(inverse(b2),b2),a2) != a2,
    inference(cnf_transformation,[status(esa)],[f2]) ).

fof(f5,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(inverse(X0),multiply(inverse(multiply(inverse(multiply(X1,inverse(multiply(inverse(X0),X2)))),multiply(X1,inverse(X2)))),inverse(X2)))),inverse(multiply(inverse(X2),X2))) = X2,
    inference(paramodulation,[status(thm)],[f3,f3]) ).

fof(f6,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(inverse(multiply(inverse(X2),X2)))))),inverse(multiply(inverse(inverse(multiply(inverse(X2),X2))),inverse(multiply(inverse(X2),X2))))) = multiply(inverse(multiply(X3,inverse(multiply(inverse(X1),X2)))),multiply(X3,inverse(X2))),
    inference(paramodulation,[status(thm)],[f3,f3]) ).

fof(f7,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X0,inverse(multiply(inverse(X1),X2)))),multiply(X0,inverse(X2)))),inverse(multiply(inverse(X3),multiply(inverse(X2),X2))))),X1)),inverse(multiply(inverse(multiply(inverse(X2),X2)),multiply(inverse(X2),X2)))) = X3,
    inference(paramodulation,[status(thm)],[f3,f3]) ).

fof(f10,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(inverse(multiply(inverse(multiply(X0,inverse(multiply(inverse(X1),X2)))),multiply(X0,inverse(X2)))),multiply(inverse(multiply(inverse(multiply(X3,inverse(X1))),multiply(X3,inverse(inverse(multiply(inverse(X2),X2)))))),inverse(inverse(multiply(inverse(X2),X2)))))),inverse(multiply(inverse(inverse(multiply(inverse(X2),X2))),inverse(multiply(inverse(X2),X2))))) = inverse(multiply(inverse(X2),X2)),
    inference(paramodulation,[status(thm)],[f3,f5]) ).

fof(f53,plain,
    ! [X0,X1,X2] : X0 = multiply(inverse(multiply(X1,inverse(multiply(inverse(multiply(inverse(X0),inverse(multiply(inverse(X2),X2)))),X2)))),multiply(X1,inverse(X2))),
    inference(paramodulation,[status(thm)],[f3,f6]) ).

fof(f54,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(X0,inverse(multiply(inverse(X1),X2)))),multiply(X0,inverse(X2))) = multiply(inverse(multiply(X3,inverse(multiply(inverse(X1),X2)))),multiply(X3,inverse(X2))),
    inference(paramodulation,[status(thm)],[f6,f6]) ).

fof(f95,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(inverse(multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(inverse(multiply(inverse(X2),X2)))))),inverse(multiply(inverse(inverse(multiply(inverse(X2),X2))),inverse(multiply(inverse(X2),X2)))))),inverse(multiply(inverse(X2),X2))) = X1,
    inference(paramodulation,[status(thm)],[f6,f3]) ).

fof(f123,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(multiply(X2,inverse(X3)))))),inverse(multiply(inverse(multiply(X2,inverse(X3))),multiply(X2,inverse(X3))))) = multiply(X2,inverse(multiply(inverse(multiply(inverse(X1),inverse(multiply(inverse(X3),X3)))),X3))),
    inference(paramodulation,[status(thm)],[f53,f3]) ).

fof(f143,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(multiply(X2,inverse(X3))))) = multiply(inverse(multiply(X4,inverse(multiply(inverse(multiply(X2,inverse(multiply(inverse(multiply(inverse(X1),inverse(multiply(inverse(X3),X3)))),X3)))),multiply(X2,inverse(X3)))))),multiply(X4,inverse(multiply(X2,inverse(X3))))),
    inference(paramodulation,[status(thm)],[f53,f54]) ).

fof(f144,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(multiply(X2,inverse(X3))))) = multiply(inverse(multiply(X4,inverse(X1))),multiply(X4,inverse(multiply(X2,inverse(X3))))),
    inference(forward_demodulation,[status(thm)],[f53,f143]) ).

fof(f228,plain,
    ! [X0,X1,X2,X3,X4,X5,X6] : multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(X2))) = multiply(inverse(multiply(X3,inverse(X1))),multiply(X3,inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X4,inverse(multiply(inverse(X5),X6)))),multiply(X4,inverse(X6)))),inverse(multiply(inverse(X2),multiply(inverse(X6),X6))))),X5)),inverse(multiply(inverse(multiply(inverse(X6),X6)),multiply(inverse(X6),X6))))))),
    inference(paramodulation,[status(thm)],[f7,f144]) ).

fof(f229,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(X2))) = multiply(inverse(multiply(X3,inverse(X1))),multiply(X3,inverse(X2))),
    inference(forward_demodulation,[status(thm)],[f7,f228]) ).

fof(f377,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(inverse(multiply(X0,inverse(multiply(inverse(X1),multiply(X2,inverse(X3)))))),multiply(X0,inverse(multiply(X2,inverse(X3)))))),inverse(multiply(inverse(multiply(X4,inverse(X3))),multiply(X4,inverse(X3))))) = X1,
    inference(paramodulation,[status(thm)],[f229,f3]) ).

fof(f378,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(inverse(multiply(X0,inverse(multiply(inverse(multiply(X1,inverse(X2))),multiply(X1,inverse(X3)))))),multiply(X0,inverse(multiply(X4,inverse(X3)))))),inverse(multiply(inverse(multiply(X4,inverse(X3))),multiply(X4,inverse(X3))))) = multiply(X4,inverse(X2)),
    inference(paramodulation,[status(thm)],[f229,f3]) ).

fof(f379,plain,
    ! [X0,X1,X2,X3] : multiply(X0,inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X1,inverse(X2))),multiply(X1,inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))) = multiply(X0,inverse(X2)),
    inference(forward_demodulation,[status(thm)],[f123,f378]) ).

fof(f521,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(inverse(multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(inverse(multiply(inverse(X2),X2)))))),inverse(multiply(inverse(inverse(multiply(inverse(X2),X2))),inverse(multiply(inverse(X2),X2)))))),inverse(multiply(inverse(X2),X2))) = multiply(inverse(multiply(inverse(multiply(inverse(multiply(X3,inverse(X1))),multiply(X3,inverse(X4)))),inverse(multiply(inverse(X4),X4)))),X4),
    inference(paramodulation,[status(thm)],[f379,f95]) ).

fof(f522,plain,
    ! [X0,X1,X2] : X0 = multiply(inverse(multiply(inverse(multiply(inverse(multiply(X1,inverse(X0))),multiply(X1,inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2),
    inference(forward_demodulation,[status(thm)],[f95,f521]) ).

fof(f657,plain,
    ! [X0,X1,X2,X3,X4] : X0 = multiply(inverse(multiply(inverse(multiply(inverse(multiply(X1,inverse(X0))),multiply(X1,inverse(multiply(X2,inverse(X3)))))),inverse(multiply(inverse(multiply(X4,inverse(X3))),multiply(X4,inverse(X3)))))),multiply(X2,inverse(X3))),
    inference(paramodulation,[status(thm)],[f229,f522]) ).

fof(f753,plain,
    ! [X0,X1,X2,X3,X4,X5] : X0 = multiply(inverse(multiply(inverse(multiply(inverse(multiply(X1,inverse(X0))),multiply(X1,inverse(multiply(X2,inverse(X3)))))),inverse(multiply(inverse(X4),multiply(inverse(multiply(inverse(multiply(inverse(multiply(X5,inverse(X4))),multiply(X5,inverse(inverse(X3))))),inverse(multiply(inverse(inverse(X3)),inverse(X3))))),inverse(X3)))))),multiply(X2,inverse(X3))),
    inference(paramodulation,[status(thm)],[f522,f657]) ).

fof(f754,plain,
    ! [X0,X1,X2,X3,X4] : X0 = multiply(inverse(multiply(inverse(multiply(inverse(multiply(X1,inverse(X0))),multiply(X1,inverse(multiply(X2,inverse(X3)))))),inverse(multiply(inverse(X4),X4)))),multiply(X2,inverse(X3))),
    inference(forward_demodulation,[status(thm)],[f522,f753]) ).

fof(f796,plain,
    ! [X0,X1,X2,X3,X4,X5] : multiply(inverse(multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(multiply(X2,inverse(X3)))))),inverse(multiply(inverse(multiply(X2,inverse(X3))),multiply(X2,inverse(X3))))) = multiply(inverse(multiply(inverse(multiply(X4,inverse(X1))),multiply(X4,inverse(multiply(X2,inverse(X3)))))),inverse(multiply(inverse(multiply(X5,inverse(X3))),multiply(X5,inverse(X3))))),
    inference(paramodulation,[status(thm)],[f657,f3]) ).

fof(f797,plain,
    ! [X0,X1,X2,X3,X4] : multiply(X0,inverse(multiply(inverse(multiply(inverse(X1),inverse(multiply(inverse(X2),X2)))),X2))) = multiply(inverse(multiply(inverse(multiply(X3,inverse(X1))),multiply(X3,inverse(multiply(X0,inverse(X2)))))),inverse(multiply(inverse(multiply(X4,inverse(X2))),multiply(X4,inverse(X2))))),
    inference(forward_demodulation,[status(thm)],[f123,f796]) ).

fof(f798,plain,
    ! [X0,X1,X2] : multiply(X0,inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(X0,inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))) = X1,
    inference(backward_demodulation,[status(thm)],[f797,f377]) ).

fof(f822,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))))),inverse(multiply(inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))))),inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))))))) = multiply(inverse(multiply(X4,inverse(X2))),multiply(X4,inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))))),
    inference(paramodulation,[status(thm)],[f798,f6]) ).

fof(f834,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(X0,inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(X2,inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))),multiply(X0,inverse(X4))) = multiply(inverse(X1),multiply(X2,inverse(X4))),
    inference(paramodulation,[status(thm)],[f798,f229]) ).

fof(f930,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(inverse(multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))),multiply(inverse(multiply(inverse(multiply(X4,inverse(X2))),multiply(X4,inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))))),inverse(multiply(inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))))),inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))))))) = inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))),
    inference(paramodulation,[status(thm)],[f798,f10]) ).

fof(f1014,plain,
    ! [X0,X1,X2,X3,X4,X5,X6] : X0 = multiply(inverse(multiply(inverse(multiply(inverse(multiply(X1,inverse(X0))),multiply(X1,inverse(X2)))),inverse(multiply(inverse(X3),X3)))),multiply(inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X4,inverse(multiply(inverse(X5),X6)))),multiply(X4,inverse(X6)))),inverse(multiply(inverse(X2),multiply(inverse(X6),X6))))),X5)),inverse(multiply(inverse(multiply(inverse(X6),X6)),multiply(inverse(X6),X6))))),
    inference(paramodulation,[status(thm)],[f7,f754]) ).

fof(f1015,plain,
    ! [X0,X1,X2,X3] : X0 = multiply(inverse(multiply(inverse(multiply(inverse(multiply(X1,inverse(X0))),multiply(X1,inverse(X2)))),inverse(multiply(inverse(X3),X3)))),X2),
    inference(forward_demodulation,[status(thm)],[f7,f1014]) ).

fof(f1064,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(inverse(X0),inverse(multiply(inverse(X1),X1)))),X1) = multiply(inverse(multiply(inverse(X0),inverse(multiply(inverse(X2),X2)))),X1),
    inference(paramodulation,[status(thm)],[f53,f1015]) ).

fof(f1159,plain,
    ! [X0,X1,X2,X3] : multiply(X0,inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(X0,inverse(X2)))),inverse(multiply(inverse(X3),X3)))),X2))) = X1,
    inference(paramodulation,[status(thm)],[f1064,f798]) ).

fof(f1162,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(inverse(X0),inverse(X1))),multiply(inverse(X0),inverse(X1))) = multiply(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),inverse(multiply(inverse(X2),X2)))),multiply(inverse(X0),inverse(X1)))),inverse(multiply(inverse(X3),X3)))),X1),
    inference(paramodulation,[status(thm)],[f1064,f1015]) ).

fof(f1163,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(inverse(X0),inverse(X1))),multiply(inverse(X0),inverse(X1))) = multiply(inverse(X2),X2),
    inference(forward_demodulation,[status(thm)],[f1015,f1162]) ).

fof(f1268,plain,
    ! [X0,X1] : multiply(inverse(X0),X0) = multiply(inverse(X1),X1),
    inference(paramodulation,[status(thm)],[f1163,f1163]) ).

fof(f1303,plain,
    ! [X0,X1,X2] : X0 = multiply(inverse(multiply(inverse(multiply(inverse(X1),X1)),inverse(multiply(inverse(X2),X2)))),X0),
    inference(paramodulation,[status(thm)],[f1163,f1015]) ).

fof(f1369,plain,
    ! [X0] : multiply(multiply(inverse(X0),X0),a2) != a2,
    inference(paramodulation,[status(thm)],[f1268,f4]) ).

fof(f1448,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(inverse(X0),X0)),inverse(X1)) = multiply(inverse(multiply(X2,inverse(multiply(inverse(X3),X3)))),multiply(X2,inverse(X1))),
    inference(paramodulation,[status(thm)],[f229,f1303]) ).

fof(f1452,plain,
    ! [X0,X1,X2,X3] : X0 = multiply(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),X1)),inverse(multiply(inverse(X2),X2)))),inverse(multiply(inverse(X3),X3)))),X0),
    inference(paramodulation,[status(thm)],[f1303,f1303]) ).

fof(f1453,plain,
    ! [X0,X1] : X0 = multiply(inverse(inverse(multiply(inverse(X1),X1))),X0),
    inference(forward_demodulation,[status(thm)],[f1303,f1452]) ).

fof(f1466,plain,
    ! [X0,X1] : multiply(multiply(inverse(multiply(inverse(X0),X0)),inverse(multiply(inverse(X1),X1))),a2) != a2,
    inference(paramodulation,[status(thm)],[f1303,f1369]) ).

fof(f1474,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(X2))) = multiply(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X3),X3)),inverse(multiply(inverse(X4),X4)))),inverse(X1))),inverse(X2)),
    inference(paramodulation,[status(thm)],[f1303,f229]) ).

fof(f1475,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(X2))) = multiply(inverse(inverse(X1)),inverse(X2)),
    inference(forward_demodulation,[status(thm)],[f1303,f1474]) ).

fof(f1532,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(inverse(multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))),multiply(inverse(multiply(inverse(multiply(X4,inverse(X2))),multiply(X4,inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))) = inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X2),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))),
    inference(backward_demodulation,[status(thm)],[f1453,f930]) ).

fof(f1533,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(inverse(multiply(inverse(inverse(X0)),inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))))),multiply(inverse(multiply(inverse(multiply(X3,inverse(X1))),multiply(X3,inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))) = inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))),
    inference(forward_demodulation,[status(thm)],[f1475,f1532]) ).

fof(f1534,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(inverse(multiply(inverse(inverse(X0)),inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))))),multiply(inverse(multiply(inverse(inverse(X1)),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))) = inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))),
    inference(forward_demodulation,[status(thm)],[f1475,f1533]) ).

fof(f1535,plain,
    ! [X0,X1,X2,X3,X4] : multiply(inverse(multiply(inverse(multiply(X0,inverse(X1))),multiply(X0,inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3)))))) = multiply(inverse(multiply(X4,inverse(X2))),multiply(X4,inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X2),multiply(inverse(X1),inverse(X3)))),inverse(multiply(inverse(X3),X3)))),X3))))),
    inference(backward_demodulation,[status(thm)],[f1453,f822]) ).

fof(f1536,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(multiply(inverse(inverse(X0)),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))) = multiply(inverse(multiply(X3,inverse(X1))),multiply(X3,inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))))),
    inference(forward_demodulation,[status(thm)],[f1475,f1535]) ).

fof(f1537,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(inverse(inverse(X0)),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))) = multiply(inverse(inverse(X1)),inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X1),multiply(inverse(X0),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))),
    inference(forward_demodulation,[status(thm)],[f1475,f1536]) ).

fof(f2349,plain,
    ! [X0,X1,X2,X3] : multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(X1,inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(X3)) = multiply(inverse(X0),multiply(X1,inverse(X3))),
    inference(backward_demodulation,[status(thm)],[f1475,f834]) ).

fof(f2376,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(inverse(X0),X0)),inverse(X1)) = multiply(inverse(inverse(multiply(inverse(X2),X2))),inverse(X1)),
    inference(backward_demodulation,[status(thm)],[f1475,f1448]) ).

fof(f2377,plain,
    ! [X0,X1] : multiply(inverse(multiply(inverse(X0),X0)),inverse(X1)) = inverse(X1),
    inference(forward_demodulation,[status(thm)],[f1453,f2376]) ).

fof(f2634,plain,
    ! [X0,X1,X2] : multiply(inverse(multiply(inverse(multiply(inverse(inverse(X0)),inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))))),multiply(inverse(inverse(X0)),inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))),inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))) = inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))),
    inference(backward_demodulation,[status(thm)],[f1537,f1534]) ).

fof(f2635,plain,
    ! [X0,X1,X2] : inverse(inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))))) = inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))),
    inference(forward_demodulation,[status(thm)],[f2377,f2634]) ).

fof(f2636,plain,
    ! [X0,X1,X2] : inverse(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))))) = inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))),
    inference(forward_demodulation,[status(thm)],[f2349,f2635]) ).

fof(f2637,plain,
    ! [X0,X1,X2] : inverse(inverse(multiply(inverse(X0),X0))) = inverse(multiply(inverse(inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2)))),
    inference(forward_demodulation,[status(thm)],[f1159,f2636]) ).

fof(f2638,plain,
    ! [X0,X1,X2] : inverse(inverse(multiply(inverse(X0),X0))) = inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(multiply(inverse(multiply(inverse(multiply(inverse(X0),multiply(inverse(X1),inverse(X2)))),inverse(multiply(inverse(X2),X2)))),X2))))),
    inference(forward_demodulation,[status(thm)],[f2349,f2637]) ).

fof(f2639,plain,
    ! [X0] : inverse(inverse(multiply(inverse(X0),X0))) = inverse(multiply(inverse(X0),X0)),
    inference(forward_demodulation,[status(thm)],[f1159,f2638]) ).

fof(f2989,plain,
    ! [X0] : multiply(inverse(multiply(inverse(X0),X0)),a2) != a2,
    inference(backward_demodulation,[status(thm)],[f2377,f1466]) ).

fof(f3212,plain,
    ! [X0,X1] : X0 = multiply(inverse(multiply(inverse(X1),X1)),X0),
    inference(backward_demodulation,[status(thm)],[f2639,f1453]) ).

fof(f3322,plain,
    a2 != a2,
    inference(backward_demodulation,[status(thm)],[f3212,f2989]) ).

fof(f3323,plain,
    $false,
    inference(trivial_equality_resolution,[status(esa)],[f3322]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12  % Problem  : GRP425-1 : TPTP v8.1.2. Released v2.6.0.
% 0.03/0.13  % Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s
% 0.13/0.34  % Computer : n028.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % WCLimit  : 300
% 0.13/0.34  % DateTime : Tue May 30 11:45:47 EDT 2023
% 0.13/0.34  % CPUTime  : 
% 0.13/0.35  % Drodi V3.5.1
% 20.45/2.98  % Refutation found
% 20.45/2.98  % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 20.45/2.98  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 21.23/3.09  % Elapsed time: 2.727685 seconds
% 21.23/3.09  % CPU time: 21.155505 seconds
% 21.23/3.09  % Memory used: 267.923 MB
%------------------------------------------------------------------------------