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Faust---1.0.UNS-Ref.s

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%------------------------------------------------------------------------------
% File     : Faust---1.0
% Problem  : GRP124-8.004 : TPTP v3.4.2. Released v1.2.0.
% Transfm  : none
% Format   : tptp
% Command  : faust %s

% Computer : art10.cs.miami.edu
% Model    : i686 i686
% CPU      : Intel(R) Pentium(R) 4 CPU 2.80GHz @ 2794MHz
% Memory   : 1003MB
% OS       : Linux 2.6.11-1.1369_FC4
% CPULimit : 600s
% DateTime : Wed May  6 12:25:43 EDT 2009

% Result   : Unsatisfiable 7.1s
% Output   : Refutation 7.1s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   11
%            Number of leaves      :   21
% Syntax   : Number of formulae    :   85 (  53 unt;   0 def)
%            Number of atoms       :  134 (   0 equ)
%            Maximal formula atoms :    6 (   1 avg)
%            Number of connectives :  138 (  89   ~;  49   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    8 (   3 avg)
%            Maximal term depth    :    1 (   1 avg)
%            Number of predicates  :    5 (   4 usr;   1 prp; 0-3 aty)
%            Number of functors    :    4 (   4 usr;   4 con; 0-0 aty)
%            Number of variables   :   58 (   0 sgn  20   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Faust---1.0 format not known, defaulting to TPTP
fof(element_1,plain,
    group_element(e_1),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155196952,plain,
    group_element(e_1),
    inference(rewrite,[status(thm)],[element_1]),
    [] ).

fof(element_2,plain,
    group_element(e_2),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155201152,plain,
    group_element(e_2),
    inference(rewrite,[status(thm)],[element_2]),
    [] ).

fof(product1_total_function1,plain,
    ! [A,B] :
      ( ~ group_element(A)
      | ~ group_element(B)
      | product1(A,B,e_1)
      | product1(A,B,e_2)
      | product1(A,B,e_3)
      | product1(A,B,e_4) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155278112,plain,
    ( ~ group_element(A)
    | ~ group_element(B)
    | product1(A,B,e_1)
    | product1(A,B,e_2)
    | product1(A,B,e_3)
    | product1(A,B,e_4) ),
    inference(rewrite,[status(thm)],[product1_total_function1]),
    [] ).

fof(product1_right_cancellation,plain,
    ! [A,B,C,D] :
      ( ~ product1(A,B,C)
      | ~ product1(A,D,C)
      | equalish(B,D) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155294992,plain,
    ( ~ product1(A,B,C)
    | ~ product1(A,D,C)
    | equalish(B,D) ),
    inference(rewrite,[status(thm)],[product1_right_cancellation]),
    [] ).

fof(product1_idempotence,plain,
    ! [A] : product1(A,A,A),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155303000,plain,
    product1(A,A,A),
    inference(rewrite,[status(thm)],[product1_idempotence]),
    [] ).

cnf(165351592,plain,
    ( ~ product1(A,B,A)
    | equalish(A,B) ),
    inference(resolution,[status(thm)],[155294992,155303000]),
    [] ).

fof(e_1_is_not_e_2,plain,
    ~ equalish(e_1,e_2),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155217016,plain,
    ~ equalish(e_1,e_2),
    inference(rewrite,[status(thm)],[e_1_is_not_e_2]),
    [] ).

cnf(165367584,plain,
    ~ product1(e_1,e_2,e_1),
    inference(resolution,[status(thm)],[165351592,155217016]),
    [] ).

cnf(193887512,plain,
    ( product1(e_1,e_2,e_2)
    | product1(e_1,e_2,e_3)
    | product1(e_1,e_2,e_4) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[155196952,155201152,155278112,165367584]),
    [] ).

fof(product1_left_cancellation,plain,
    ! [A,B,C,D] :
      ( ~ product1(A,B,C)
      | ~ product1(D,B,C)
      | equalish(A,D) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155298624,plain,
    ( ~ product1(A,B,C)
    | ~ product1(D,B,C)
    | equalish(A,D) ),
    inference(rewrite,[status(thm)],[product1_left_cancellation]),
    [] ).

cnf(165597928,plain,
    ( ~ product1(B,A,A)
    | equalish(A,B) ),
    inference(resolution,[status(thm)],[155298624,155303000]),
    [] ).

fof(e_2_is_not_e_1,plain,
    ~ equalish(e_2,e_1),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155228808,plain,
    ~ equalish(e_2,e_1),
    inference(rewrite,[status(thm)],[e_2_is_not_e_1]),
    [] ).

cnf(165647528,plain,
    ~ product1(e_1,e_2,e_2),
    inference(resolution,[status(thm)],[165597928,155228808]),
    [] ).

cnf(230624552,plain,
    ( product1(e_1,e_2,e_3)
    | product1(e_1,e_2,e_4) ),
    inference(resolution,[status(thm)],[193887512,165647528]),
    [] ).

cnf(165401936,plain,
    ~ product1(e_2,e_1,e_2),
    inference(resolution,[status(thm)],[165351592,155228808]),
    [] ).

cnf(165613928,plain,
    ~ product1(e_2,e_1,e_1),
    inference(resolution,[status(thm)],[165597928,155217016]),
    [] ).

fof(e_3_is_not_e_1,plain,
    ~ equalish(e_3,e_1),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155244000,plain,
    ~ equalish(e_3,e_1),
    inference(rewrite,[status(thm)],[e_3_is_not_e_1]),
    [] ).

cnf(165690072,plain,
    ~ product1(e_1,e_3,e_3),
    inference(resolution,[status(thm)],[165597928,155244000]),
    [] ).

fof(e_1_is_not_e_3,plain,
    ~ equalish(e_1,e_3),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155221304,plain,
    ~ equalish(e_1,e_3),
    inference(rewrite,[status(thm)],[e_1_is_not_e_3]),
    [] ).

cnf(165379328,plain,
    ~ product1(e_1,e_3,e_1),
    inference(resolution,[status(thm)],[165351592,155221304]),
    [] ).

fof(element_3,plain,
    group_element(e_3),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155204872,plain,
    group_element(e_3),
    inference(rewrite,[status(thm)],[element_3]),
    [] ).

fof(qg2a,plain,
    ! [A,B,C,D] :
      ( ~ product1(A,B,C)
      | ~ product1(C,A,D)
      | product2(D,B,A) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155343184,plain,
    ( ~ product1(A,B,C)
    | ~ product1(C,A,D)
    | product2(D,B,A) ),
    inference(rewrite,[status(thm)],[qg2a]),
    [] ).

fof(product2_total_function2,plain,
    ! [A,B,C,D] :
      ( ~ product2(A,B,C)
      | ~ product2(A,B,D)
      | equalish(C,D) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155325600,plain,
    ( ~ product2(A,B,C)
    | ~ product2(A,B,D)
    | equalish(C,D) ),
    inference(rewrite,[status(thm)],[product2_total_function2]),
    [] ).

cnf(164712368,plain,
    ( ~ product2(A,B,e_3)
    | ~ product2(A,B,e_1) ),
    inference(resolution,[status(thm)],[155325600,155244000]),
    [] ).

fof(product2_idempotence,plain,
    ! [A] : product2(A,A,A),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155338016,plain,
    product2(A,A,A),
    inference(rewrite,[status(thm)],[product2_idempotence]),
    [] ).

cnf(164803320,plain,
    ~ product2(e_3,e_3,e_1),
    inference(resolution,[status(thm)],[164712368,155338016]),
    [] ).

cnf(166389032,plain,
    ( ~ product1(e_1,e_3,A)
    | ~ product1(A,e_1,e_3) ),
    inference(resolution,[status(thm)],[155343184,164803320]),
    [] ).

cnf(194417128,plain,
    ( product1(e_1,e_3,e_4)
    | ~ product1(e_2,e_1,e_3) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[165690072,165379328,155204872,155196952,155278112,166389032]),
    [] ).

cnf(164575784,plain,
    ( ~ product1(e_1,A,B)
    | ~ product1(e_2,A,B) ),
    inference(resolution,[status(thm)],[155298624,155217016]),
    [] ).

cnf(196984168,plain,
    ( ~ product1(e_2,e_1,e_3)
    | ~ product1(e_2,e_3,e_4) ),
    inference(resolution,[status(thm)],[194417128,164575784]),
    [] ).

cnf(202796360,plain,
    ( ~ product1(e_2,e_3,e_4)
    | product1(e_2,e_1,e_4) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[165401936,165613928,155196952,155201152,196984168,155278112]),
    [] ).

cnf(164684640,plain,
    ( ~ product1(A,e_3,B)
    | ~ product1(A,e_1,B) ),
    inference(resolution,[status(thm)],[155294992,155244000]),
    [] ).

cnf(202849392,plain,
    ~ product1(e_2,e_3,e_4),
    inference(resolution,[status(thm)],[202796360,164684640]),
    [] ).

fof(e_3_is_not_e_2,plain,
    ~ equalish(e_3,e_2),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155247648,plain,
    ~ equalish(e_3,e_2),
    inference(rewrite,[status(thm)],[e_3_is_not_e_2]),
    [] ).

cnf(165703448,plain,
    ~ product1(e_2,e_3,e_3),
    inference(resolution,[status(thm)],[165597928,155247648]),
    [] ).

fof(e_2_is_not_e_3,plain,
    ~ equalish(e_2,e_3),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155232376,plain,
    ~ equalish(e_2,e_3),
    inference(rewrite,[status(thm)],[e_2_is_not_e_3]),
    [] ).

cnf(165416072,plain,
    ~ product1(e_2,e_3,e_2),
    inference(resolution,[status(thm)],[165351592,155232376]),
    [] ).

cnf(165830912,plain,
    ( ~ product2(A,A,B)
    | equalish(A,B) ),
    inference(resolution,[status(thm)],[155325600,155338016]),
    [] ).

cnf(165895072,plain,
    ~ product2(e_3,e_3,e_2),
    inference(resolution,[status(thm)],[165830912,155247648]),
    [] ).

cnf(166578496,plain,
    ( ~ product1(e_2,e_3,A)
    | ~ product1(A,e_2,e_3) ),
    inference(resolution,[status(thm)],[155343184,165895072]),
    [] ).

cnf(194474888,plain,
    ( product1(e_2,e_3,e_4)
    | ~ product1(e_1,e_2,e_3) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[165703448,165416072,155201152,155204872,155278112,166578496]),
    [] ).

cnf(203097104,plain,
    ~ product1(e_1,e_2,e_3),
    inference(resolution,[status(thm)],[202849392,194474888]),
    [] ).

cnf(231081744,plain,
    product1(e_1,e_2,e_4),
    inference(resolution,[status(thm)],[230624552,203097104]),
    [] ).

fof(e_4_is_not_e_2,plain,
    ~ equalish(e_4,e_2),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155258808,plain,
    ~ equalish(e_4,e_2),
    inference(rewrite,[status(thm)],[e_4_is_not_e_2]),
    [] ).

cnf(165743576,plain,
    ~ product1(e_2,e_4,e_4),
    inference(resolution,[status(thm)],[165597928,155258808]),
    [] ).

fof(e_2_is_not_e_4,plain,
    ~ equalish(e_2,e_4),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155236136,plain,
    ~ equalish(e_2,e_4),
    inference(rewrite,[status(thm)],[e_2_is_not_e_4]),
    [] ).

cnf(165430240,plain,
    ~ product1(e_2,e_4,e_2),
    inference(resolution,[status(thm)],[165351592,155236136]),
    [] ).

fof(element_4,plain,
    group_element(e_4),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155208456,plain,
    group_element(e_4),
    inference(rewrite,[status(thm)],[element_4]),
    [] ).

cnf(165934720,plain,
    ~ product2(e_4,e_4,e_2),
    inference(resolution,[status(thm)],[165830912,155258808]),
    [] ).

cnf(166645320,plain,
    ( ~ product1(e_2,e_4,A)
    | ~ product1(A,e_2,e_4) ),
    inference(resolution,[status(thm)],[155343184,165934720]),
    [] ).

cnf(194518504,plain,
    ( product1(e_2,e_4,e_3)
    | ~ product1(e_1,e_2,e_4) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[165743576,165430240,155201152,155208456,155278112,166645320]),
    [] ).

cnf(165334304,plain,
    ( ~ product1(A,e_2,B)
    | ~ product1(A,e_3,B) ),
    inference(resolution,[status(thm)],[155294992,155232376]),
    [] ).

cnf(197001656,plain,
    ( ~ product1(e_2,e_1,e_3)
    | ~ product1(e_1,e_2,e_4) ),
    inference(resolution,[status(thm)],[194417128,165334304]),
    [] ).

cnf(203837976,plain,
    ( ~ product1(e_1,e_2,e_4)
    | product1(e_2,e_1,e_4) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[165401936,165613928,155201152,155196952,197001656,155278112]),
    [] ).

fof(e_4_is_not_e_1,plain,
    ~ equalish(e_4,e_1),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155255160,plain,
    ~ equalish(e_4,e_1),
    inference(rewrite,[status(thm)],[e_4_is_not_e_1]),
    [] ).

cnf(165730200,plain,
    ~ product1(e_1,e_4,e_4),
    inference(resolution,[status(thm)],[165597928,155255160]),
    [] ).

fof(e_1_is_not_e_4,plain,
    ~ equalish(e_1,e_4),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),
    [] ).

cnf(155225016,plain,
    ~ equalish(e_1,e_4),
    inference(rewrite,[status(thm)],[e_1_is_not_e_4]),
    [] ).

cnf(165393464,plain,
    ~ product1(e_1,e_4,e_1),
    inference(resolution,[status(thm)],[165351592,155225016]),
    [] ).

cnf(165922888,plain,
    ~ product2(e_4,e_4,e_1),
    inference(resolution,[status(thm)],[165830912,155255160]),
    [] ).

cnf(166626064,plain,
    ( ~ product1(e_1,e_4,A)
    | ~ product1(A,e_1,e_4) ),
    inference(resolution,[status(thm)],[155343184,165922888]),
    [] ).

cnf(194508248,plain,
    ( product1(e_1,e_4,e_3)
    | ~ product1(e_2,e_1,e_4) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[165730200,165393464,155208456,155196952,155278112,166626064]),
    [] ).

cnf(185768128,plain,
    ( ~ product1(e_1,e_2,e_4)
    | product1(e_1,e_4,e_3) ),
    inference(resolution,[status(thm)],[203837976,194508248]),
    [] ).

cnf(204217264,plain,
    ~ product1(e_1,e_2,e_4),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[194518504,185768128,164575784]),
    [] ).

cnf(contradiction,plain,
    $false,
    inference(resolution,[status(thm)],[231081744,204217264]),
    [] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% Proof found in: 7 seconds
% START OF PROOF SEQUENCE
% fof(element_1,plain,(group_element(e_1)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155196952,plain,(group_element(e_1)),inference(rewrite,[status(thm)],[element_1]),[]).
% 
% fof(element_2,plain,(group_element(e_2)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155201152,plain,(group_element(e_2)),inference(rewrite,[status(thm)],[element_2]),[]).
% 
% fof(product1_total_function1,plain,(~group_element(A)|~group_element(B)|product1(A,B,e_1)|product1(A,B,e_2)|product1(A,B,e_3)|product1(A,B,e_4)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155278112,plain,(~group_element(A)|~group_element(B)|product1(A,B,e_1)|product1(A,B,e_2)|product1(A,B,e_3)|product1(A,B,e_4)),inference(rewrite,[status(thm)],[product1_total_function1]),[]).
% 
% fof(product1_right_cancellation,plain,(~product1(A,B,C)|~product1(A,D,C)|equalish(B,D)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155294992,plain,(~product1(A,B,C)|~product1(A,D,C)|equalish(B,D)),inference(rewrite,[status(thm)],[product1_right_cancellation]),[]).
% 
% fof(product1_idempotence,plain,(product1(A,A,A)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155303000,plain,(product1(A,A,A)),inference(rewrite,[status(thm)],[product1_idempotence]),[]).
% 
% cnf(165351592,plain,(~product1(A,B,A)|equalish(A,B)),inference(resolution,[status(thm)],[155294992,155303000]),[]).
% 
% fof(e_1_is_not_e_2,plain,(~equalish(e_1,e_2)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155217016,plain,(~equalish(e_1,e_2)),inference(rewrite,[status(thm)],[e_1_is_not_e_2]),[]).
% 
% cnf(165367584,plain,(~product1(e_1,e_2,e_1)),inference(resolution,[status(thm)],[165351592,155217016]),[]).
% 
% cnf(193887512,plain,(product1(e_1,e_2,e_2)|product1(e_1,e_2,e_3)|product1(e_1,e_2,e_4)),inference(forward_subsumption_resolution__resolution,[status(thm)],[155196952,155201152,155278112,165367584]),[]).
% 
% fof(product1_left_cancellation,plain,(~product1(A,B,C)|~product1(D,B,C)|equalish(A,D)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155298624,plain,(~product1(A,B,C)|~product1(D,B,C)|equalish(A,D)),inference(rewrite,[status(thm)],[product1_left_cancellation]),[]).
% 
% cnf(165597928,plain,(~product1(B,A,A)|equalish(A,B)),inference(resolution,[status(thm)],[155298624,155303000]),[]).
% 
% fof(e_2_is_not_e_1,plain,(~equalish(e_2,e_1)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155228808,plain,(~equalish(e_2,e_1)),inference(rewrite,[status(thm)],[e_2_is_not_e_1]),[]).
% 
% cnf(165647528,plain,(~product1(e_1,e_2,e_2)),inference(resolution,[status(thm)],[165597928,155228808]),[]).
% 
% cnf(230624552,plain,(product1(e_1,e_2,e_3)|product1(e_1,e_2,e_4)),inference(resolution,[status(thm)],[193887512,165647528]),[]).
% 
% cnf(165401936,plain,(~product1(e_2,e_1,e_2)),inference(resolution,[status(thm)],[165351592,155228808]),[]).
% 
% cnf(165613928,plain,(~product1(e_2,e_1,e_1)),inference(resolution,[status(thm)],[165597928,155217016]),[]).
% 
% fof(e_3_is_not_e_1,plain,(~equalish(e_3,e_1)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155244000,plain,(~equalish(e_3,e_1)),inference(rewrite,[status(thm)],[e_3_is_not_e_1]),[]).
% 
% cnf(165690072,plain,(~product1(e_1,e_3,e_3)),inference(resolution,[status(thm)],[165597928,155244000]),[]).
% 
% fof(e_1_is_not_e_3,plain,(~equalish(e_1,e_3)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155221304,plain,(~equalish(e_1,e_3)),inference(rewrite,[status(thm)],[e_1_is_not_e_3]),[]).
% 
% cnf(165379328,plain,(~product1(e_1,e_3,e_1)),inference(resolution,[status(thm)],[165351592,155221304]),[]).
% 
% fof(element_3,plain,(group_element(e_3)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155204872,plain,(group_element(e_3)),inference(rewrite,[status(thm)],[element_3]),[]).
% 
% fof(qg2a,plain,(~product1(A,B,C)|~product1(C,A,D)|product2(D,B,A)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155343184,plain,(~product1(A,B,C)|~product1(C,A,D)|product2(D,B,A)),inference(rewrite,[status(thm)],[qg2a]),[]).
% 
% fof(product2_total_function2,plain,(~product2(A,B,C)|~product2(A,B,D)|equalish(C,D)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155325600,plain,(~product2(A,B,C)|~product2(A,B,D)|equalish(C,D)),inference(rewrite,[status(thm)],[product2_total_function2]),[]).
% 
% cnf(164712368,plain,(~product2(A,B,e_3)|~product2(A,B,e_1)),inference(resolution,[status(thm)],[155325600,155244000]),[]).
% 
% fof(product2_idempotence,plain,(product2(A,A,A)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155338016,plain,(product2(A,A,A)),inference(rewrite,[status(thm)],[product2_idempotence]),[]).
% 
% cnf(164803320,plain,(~product2(e_3,e_3,e_1)),inference(resolution,[status(thm)],[164712368,155338016]),[]).
% 
% cnf(166389032,plain,(~product1(e_1,e_3,A)|~product1(A,e_1,e_3)),inference(resolution,[status(thm)],[155343184,164803320]),[]).
% 
% cnf(194417128,plain,(product1(e_1,e_3,e_4)|~product1(e_2,e_1,e_3)),inference(forward_subsumption_resolution__resolution,[status(thm)],[165690072,165379328,155204872,155196952,155278112,166389032]),[]).
% 
% cnf(164575784,plain,(~product1(e_1,A,B)|~product1(e_2,A,B)),inference(resolution,[status(thm)],[155298624,155217016]),[]).
% 
% cnf(196984168,plain,(~product1(e_2,e_1,e_3)|~product1(e_2,e_3,e_4)),inference(resolution,[status(thm)],[194417128,164575784]),[]).
% 
% cnf(202796360,plain,(~product1(e_2,e_3,e_4)|product1(e_2,e_1,e_4)),inference(forward_subsumption_resolution__resolution,[status(thm)],[165401936,165613928,155196952,155201152,196984168,155278112]),[]).
% 
% cnf(164684640,plain,(~product1(A,e_3,B)|~product1(A,e_1,B)),inference(resolution,[status(thm)],[155294992,155244000]),[]).
% 
% cnf(202849392,plain,(~product1(e_2,e_3,e_4)),inference(resolution,[status(thm)],[202796360,164684640]),[]).
% 
% fof(e_3_is_not_e_2,plain,(~equalish(e_3,e_2)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155247648,plain,(~equalish(e_3,e_2)),inference(rewrite,[status(thm)],[e_3_is_not_e_2]),[]).
% 
% cnf(165703448,plain,(~product1(e_2,e_3,e_3)),inference(resolution,[status(thm)],[165597928,155247648]),[]).
% 
% fof(e_2_is_not_e_3,plain,(~equalish(e_2,e_3)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155232376,plain,(~equalish(e_2,e_3)),inference(rewrite,[status(thm)],[e_2_is_not_e_3]),[]).
% 
% cnf(165416072,plain,(~product1(e_2,e_3,e_2)),inference(resolution,[status(thm)],[165351592,155232376]),[]).
% 
% cnf(165830912,plain,(~product2(A,A,B)|equalish(A,B)),inference(resolution,[status(thm)],[155325600,155338016]),[]).
% 
% cnf(165895072,plain,(~product2(e_3,e_3,e_2)),inference(resolution,[status(thm)],[165830912,155247648]),[]).
% 
% cnf(166578496,plain,(~product1(e_2,e_3,A)|~product1(A,e_2,e_3)),inference(resolution,[status(thm)],[155343184,165895072]),[]).
% 
% cnf(194474888,plain,(product1(e_2,e_3,e_4)|~product1(e_1,e_2,e_3)),inference(forward_subsumption_resolution__resolution,[status(thm)],[165703448,165416072,155201152,155204872,155278112,166578496]),[]).
% 
% cnf(203097104,plain,(~product1(e_1,e_2,e_3)),inference(resolution,[status(thm)],[202849392,194474888]),[]).
% 
% cnf(231081744,plain,(product1(e_1,e_2,e_4)),inference(resolution,[status(thm)],[230624552,203097104]),[]).
% 
% fof(e_4_is_not_e_2,plain,(~equalish(e_4,e_2)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155258808,plain,(~equalish(e_4,e_2)),inference(rewrite,[status(thm)],[e_4_is_not_e_2]),[]).
% 
% cnf(165743576,plain,(~product1(e_2,e_4,e_4)),inference(resolution,[status(thm)],[165597928,155258808]),[]).
% 
% fof(e_2_is_not_e_4,plain,(~equalish(e_2,e_4)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155236136,plain,(~equalish(e_2,e_4)),inference(rewrite,[status(thm)],[e_2_is_not_e_4]),[]).
% 
% cnf(165430240,plain,(~product1(e_2,e_4,e_2)),inference(resolution,[status(thm)],[165351592,155236136]),[]).
% 
% fof(element_4,plain,(group_element(e_4)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155208456,plain,(group_element(e_4)),inference(rewrite,[status(thm)],[element_4]),[]).
% 
% cnf(165934720,plain,(~product2(e_4,e_4,e_2)),inference(resolution,[status(thm)],[165830912,155258808]),[]).
% 
% cnf(166645320,plain,(~product1(e_2,e_4,A)|~product1(A,e_2,e_4)),inference(resolution,[status(thm)],[155343184,165934720]),[]).
% 
% cnf(194518504,plain,(product1(e_2,e_4,e_3)|~product1(e_1,e_2,e_4)),inference(forward_subsumption_resolution__resolution,[status(thm)],[165743576,165430240,155201152,155208456,155278112,166645320]),[]).
% 
% cnf(165334304,plain,(~product1(A,e_2,B)|~product1(A,e_3,B)),inference(resolution,[status(thm)],[155294992,155232376]),[]).
% 
% cnf(197001656,plain,(~product1(e_2,e_1,e_3)|~product1(e_1,e_2,e_4)),inference(resolution,[status(thm)],[194417128,165334304]),[]).
% 
% cnf(203837976,plain,(~product1(e_1,e_2,e_4)|product1(e_2,e_1,e_4)),inference(forward_subsumption_resolution__resolution,[status(thm)],[165401936,165613928,155201152,155196952,197001656,155278112]),[]).
% 
% fof(e_4_is_not_e_1,plain,(~equalish(e_4,e_1)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155255160,plain,(~equalish(e_4,e_1)),inference(rewrite,[status(thm)],[e_4_is_not_e_1]),[]).
% 
% cnf(165730200,plain,(~product1(e_1,e_4,e_4)),inference(resolution,[status(thm)],[165597928,155255160]),[]).
% 
% fof(e_1_is_not_e_4,plain,(~equalish(e_1,e_4)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP124-8.004.tptp',unknown),[]).
% 
% cnf(155225016,plain,(~equalish(e_1,e_4)),inference(rewrite,[status(thm)],[e_1_is_not_e_4]),[]).
% 
% cnf(165393464,plain,(~product1(e_1,e_4,e_1)),inference(resolution,[status(thm)],[165351592,155225016]),[]).
% 
% cnf(165922888,plain,(~product2(e_4,e_4,e_1)),inference(resolution,[status(thm)],[165830912,155255160]),[]).
% 
% cnf(166626064,plain,(~product1(e_1,e_4,A)|~product1(A,e_1,e_4)),inference(resolution,[status(thm)],[155343184,165922888]),[]).
% 
% cnf(194508248,plain,(product1(e_1,e_4,e_3)|~product1(e_2,e_1,e_4)),inference(forward_subsumption_resolution__resolution,[status(thm)],[165730200,165393464,155208456,155196952,155278112,166626064]),[]).
% 
% cnf(185768128,plain,(~product1(e_1,e_2,e_4)|product1(e_1,e_4,e_3)),inference(resolution,[status(thm)],[203837976,194508248]),[]).
% 
% cnf(204217264,plain,(~product1(e_1,e_2,e_4)),inference(forward_subsumption_resolution__resolution,[status(thm)],[194518504,185768128,164575784]),[]).
% 
% cnf(contradiction,plain,$false,inference(resolution,[status(thm)],[231081744,204217264]),[]).
% 
% END OF PROOF SEQUENCE
% 
%------------------------------------------------------------------------------