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Faust---1.0.UNS-Ref.s

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%------------------------------------------------------------------------------
% File     : Faust---1.0
% Problem  : GRP130-4.003 : TPTP v3.4.2. Bugfixed v1.2.1.
% 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 12:27:46 EDT 2009

% Result   : Unsatisfiable 1.0s
% Output   : Refutation 1.0s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   16
%            Number of leaves      :   12
% Syntax   : Number of formulae    :   60 (  21 unt;   0 def)
%            Number of atoms       :  117 (   0 equ)
%            Maximal formula atoms :    5 (   1 avg)
%            Number of connectives :  125 (  68   ~;  57   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    8 (   3 avg)
%            Maximal term depth    :    1 (   1 avg)
%            Number of predicates  :    4 (   3 usr;   1 prp; 0-3 aty)
%            Number of functors    :    3 (   3 usr;   3 con; 0-0 aty)
%            Number of variables   :   66 (   6 sgn  22   !;   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/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153853320,plain,
    group_element(e_1),
    inference(rewrite,[status(thm)],[element_1]),
    [] ).

fof(element_3,plain,
    group_element(e_3),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153864976,plain,
    group_element(e_3),
    inference(rewrite,[status(thm)],[element_3]),
    [] ).

fof(row_surjectivity,plain,
    ! [A,B] :
      ( ~ group_element(A)
      | ~ group_element(B)
      | product(e_1,A,B)
      | product(e_2,A,B)
      | product(e_3,A,B) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153829280,plain,
    ( ~ group_element(A)
    | ~ group_element(B)
    | product(e_1,A,B)
    | product(e_2,A,B)
    | product(e_3,A,B) ),
    inference(rewrite,[status(thm)],[row_surjectivity]),
    [] ).

fof(qg3_1,plain,
    ! [A,B,C,D] :
      ( product(A,B,C)
      | ~ product(D,B,A)
      | ~ product(A,C,D) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153844832,plain,
    ( product(A,B,C)
    | ~ product(D,B,A)
    | ~ product(A,C,D) ),
    inference(rewrite,[status(thm)],[qg3_1]),
    [] ).

cnf(167493024,plain,
    ( ~ product(C,B,A)
    | ~ product(A,A,C)
    | product(A,B,B) ),
    inference(resolution,[status(thm)],[153844832,153844832]),
    [] ).

fof(qg3_2,plain,
    ! [A,B,C,D] :
      ( product(A,B,C)
      | ~ product(C,D,A)
      | ~ product(A,D,B) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153849152,plain,
    ( product(A,B,C)
    | ~ product(C,D,A)
    | ~ product(A,D,B) ),
    inference(rewrite,[status(thm)],[qg3_2]),
    [] ).

cnf(167993280,plain,
    ( product(A,A,A)
    | ~ product(A,B,A) ),
    inference(resolution,[status(thm)],[167493024,153849152]),
    [] ).

fof(product_right_cancellation,plain,
    ! [A,B,C,D] :
      ( ~ product(A,B,C)
      | ~ product(A,D,C)
      | equalish(B,D) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153915600,plain,
    ( ~ product(A,B,C)
    | ~ product(A,D,C)
    | equalish(B,D) ),
    inference(rewrite,[status(thm)],[product_right_cancellation]),
    [] ).

fof(e_1_is_not_e_3,plain,
    ~ equalish(e_1,e_3),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153873248,plain,
    ~ equalish(e_1,e_3),
    inference(rewrite,[status(thm)],[e_1_is_not_e_3]),
    [] ).

cnf(167302464,plain,
    ( ~ product(A,e_1,B)
    | ~ product(A,e_3,B) ),
    inference(resolution,[status(thm)],[153915600,153873248]),
    [] ).

cnf(168163664,plain,
    ( ~ product(e_1,A,e_1)
    | ~ product(e_1,e_3,e_1) ),
    inference(resolution,[status(thm)],[167993280,167302464]),
    [] ).

cnf(170471200,plain,
    ( product(e_2,e_3,e_1)
    | product(e_3,e_3,e_1) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[153853320,153864976,153829280,168163664]),
    [] ).

cnf(171539672,plain,
    ( product(e_3,e_3,e_1)
    | ~ product(e_2,e_1,e_1) ),
    inference(resolution,[status(thm)],[170471200,167302464]),
    [] ).

fof(element_2,plain,
    group_element(e_2),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153861288,plain,
    group_element(e_2),
    inference(rewrite,[status(thm)],[element_2]),
    [] ).

fof(e_1_is_not_e_2,plain,
    ~ equalish(e_1,e_2),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153869328,plain,
    ~ equalish(e_1,e_2),
    inference(rewrite,[status(thm)],[e_1_is_not_e_2]),
    [] ).

cnf(167243200,plain,
    ( ~ product(A,e_1,B)
    | ~ product(A,e_2,B) ),
    inference(resolution,[status(thm)],[153915600,153869328]),
    [] ).

cnf(168068952,plain,
    ( ~ product(e_1,A,e_1)
    | ~ product(e_1,e_2,e_1) ),
    inference(resolution,[status(thm)],[167993280,167243200]),
    [] ).

cnf(170390360,plain,
    ( product(e_2,e_2,e_1)
    | product(e_3,e_2,e_1) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[153853320,153861288,153829280,168068952]),
    [] ).

cnf(170927944,plain,
    ( product(e_3,e_2,e_1)
    | ~ product(e_2,e_1,e_1) ),
    inference(resolution,[status(thm)],[170390360,167243200]),
    [] ).

fof(e_2_is_not_e_3,plain,
    ~ equalish(e_2,e_3),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153880592,plain,
    ~ equalish(e_2,e_3),
    inference(rewrite,[status(thm)],[e_2_is_not_e_3]),
    [] ).

cnf(167308480,plain,
    ( ~ product(A,e_2,B)
    | ~ product(A,e_3,B) ),
    inference(resolution,[status(thm)],[153915600,153880592]),
    [] ).

cnf(173791432,plain,
    ~ product(e_2,e_1,e_1),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[171539672,170927944,167308480]),
    [] ).

cnf(166978752,plain,
    ( product(e_1,e_1,e_1)
    | product(e_2,e_1,e_1)
    | product(e_3,e_1,e_1) ),
    inference(resolution,[status(thm)],[153829280,153853320]),
    [] ).

cnf(173879456,plain,
    ( product(e_1,e_1,e_1)
    | product(e_3,e_1,e_1) ),
    inference(resolution,[status(thm)],[173791432,166978752]),
    [] ).

fof(product_total_function2,plain,
    ! [A,B,C,D] :
      ( ~ product(A,B,C)
      | ~ product(A,B,D)
      | equalish(C,D) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153911456,plain,
    ( ~ product(A,B,C)
    | ~ product(A,B,D)
    | equalish(C,D) ),
    inference(rewrite,[status(thm)],[product_total_function2]),
    [] ).

cnf(167228568,plain,
    ( ~ product(A,B,e_1)
    | ~ product(A,B,e_2) ),
    inference(resolution,[status(thm)],[153911456,153869328]),
    [] ).

cnf(173934720,plain,
    ( product(e_3,e_1,e_1)
    | ~ product(e_1,e_1,e_2) ),
    inference(resolution,[status(thm)],[173879456,167228568]),
    [] ).

cnf(170931648,plain,
    ( product(e_2,e_2,e_1)
    | ~ product(e_3,e_1,e_1) ),
    inference(resolution,[status(thm)],[170390360,167243200]),
    [] ).

cnf(168431848,plain,
    ( ~ product(A,e_2,e_1)
    | ~ product(e_1,e_1,A) ),
    inference(resolution,[status(thm)],[168068952,153844832]),
    [] ).

cnf(174207552,plain,
    ~ product(e_1,e_1,e_2),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[173934720,170931648,168431848]),
    [] ).

cnf(168076680,plain,
    ( ~ product(e_2,A,e_2)
    | ~ product(e_2,e_1,e_2) ),
    inference(resolution,[status(thm)],[167993280,167243200]),
    [] ).

cnf(170398680,plain,
    ( product(e_1,e_1,e_2)
    | product(e_3,e_1,e_2) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[153853320,153861288,153829280,168076680]),
    [] ).

cnf(174435552,plain,
    product(e_3,e_1,e_2),
    inference(resolution,[status(thm)],[174207552,170398680]),
    [] ).

cnf(174485776,plain,
    ~ product(e_3,e_3,e_2),
    inference(resolution,[status(thm)],[174435552,167302464]),
    [] ).

cnf(168189760,plain,
    ( ~ product(e_2,A,e_2)
    | ~ product(e_2,e_3,e_2) ),
    inference(resolution,[status(thm)],[167993280,167308480]),
    [] ).

cnf(170491688,plain,
    ( product(e_1,e_3,e_2)
    | product(e_3,e_3,e_2) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[153861288,153864976,153829280,168189760]),
    [] ).

cnf(174875128,plain,
    product(e_1,e_3,e_2),
    inference(resolution,[status(thm)],[174485776,170491688]),
    [] ).

fof(qg3,plain,
    ! [A,B,C,D] :
      ( ~ product(A,B,C)
      | ~ product(A,C,D)
      | product(D,B,A) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),
    [] ).

cnf(153923760,plain,
    ( ~ product(A,B,C)
    | ~ product(A,C,D)
    | product(D,B,A) ),
    inference(rewrite,[status(thm)],[qg3]),
    [] ).

cnf(175044064,plain,
    ( ~ product(e_1,A,e_3)
    | product(e_2,A,e_1) ),
    inference(resolution,[status(thm)],[174875128,153923760]),
    [] ).

cnf(171547576,plain,
    ( product(e_3,e_3,e_1)
    | ~ product(e_2,e_2,e_1) ),
    inference(resolution,[status(thm)],[170471200,167308480]),
    [] ).

cnf(168202424,plain,
    ( ~ product(e_3,A,e_3)
    | ~ product(e_3,e_2,e_3) ),
    inference(resolution,[status(thm)],[167993280,167308480]),
    [] ).

cnf(168764720,plain,
    ( ~ product(A,e_2,e_3)
    | ~ product(e_3,e_3,A) ),
    inference(resolution,[status(thm)],[168202424,153844832]),
    [] ).

cnf(192404472,plain,
    ~ product(e_1,e_2,e_3),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[175044064,171547576,168764720]),
    [] ).

cnf(168450184,plain,
    ( ~ product(A,e_1,e_2)
    | ~ product(e_2,e_2,A) ),
    inference(resolution,[status(thm)],[168076680,153844832]),
    [] ).

cnf(174581416,plain,
    ~ product(e_2,e_2,e_3),
    inference(resolution,[status(thm)],[174435552,168450184]),
    [] ).

cnf(170499936,plain,
    ( product(e_1,e_2,e_3)
    | product(e_2,e_2,e_3) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[153861288,153864976,153829280,168202424]),
    [] ).

cnf(175087104,plain,
    product(e_1,e_2,e_3),
    inference(resolution,[status(thm)],[174581416,170499936]),
    [] ).

cnf(contradiction,plain,
    $false,
    inference(resolution,[status(thm)],[192404472,175087104]),
    [] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% Proof found in: 1 seconds
% START OF PROOF SEQUENCE
% fof(element_1,plain,(group_element(e_1)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153853320,plain,(group_element(e_1)),inference(rewrite,[status(thm)],[element_1]),[]).
% 
% fof(element_3,plain,(group_element(e_3)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153864976,plain,(group_element(e_3)),inference(rewrite,[status(thm)],[element_3]),[]).
% 
% fof(row_surjectivity,plain,(~group_element(A)|~group_element(B)|product(e_1,A,B)|product(e_2,A,B)|product(e_3,A,B)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153829280,plain,(~group_element(A)|~group_element(B)|product(e_1,A,B)|product(e_2,A,B)|product(e_3,A,B)),inference(rewrite,[status(thm)],[row_surjectivity]),[]).
% 
% fof(qg3_1,plain,(product(A,B,C)|~product(D,B,A)|~product(A,C,D)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153844832,plain,(product(A,B,C)|~product(D,B,A)|~product(A,C,D)),inference(rewrite,[status(thm)],[qg3_1]),[]).
% 
% cnf(167493024,plain,(~product(C,B,A)|~product(A,A,C)|product(A,B,B)),inference(resolution,[status(thm)],[153844832,153844832]),[]).
% 
% fof(qg3_2,plain,(product(A,B,C)|~product(C,D,A)|~product(A,D,B)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153849152,plain,(product(A,B,C)|~product(C,D,A)|~product(A,D,B)),inference(rewrite,[status(thm)],[qg3_2]),[]).
% 
% cnf(167993280,plain,(product(A,A,A)|~product(A,B,A)),inference(resolution,[status(thm)],[167493024,153849152]),[]).
% 
% fof(product_right_cancellation,plain,(~product(A,B,C)|~product(A,D,C)|equalish(B,D)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153915600,plain,(~product(A,B,C)|~product(A,D,C)|equalish(B,D)),inference(rewrite,[status(thm)],[product_right_cancellation]),[]).
% 
% fof(e_1_is_not_e_3,plain,(~equalish(e_1,e_3)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153873248,plain,(~equalish(e_1,e_3)),inference(rewrite,[status(thm)],[e_1_is_not_e_3]),[]).
% 
% cnf(167302464,plain,(~product(A,e_1,B)|~product(A,e_3,B)),inference(resolution,[status(thm)],[153915600,153873248]),[]).
% 
% cnf(168163664,plain,(~product(e_1,A,e_1)|~product(e_1,e_3,e_1)),inference(resolution,[status(thm)],[167993280,167302464]),[]).
% 
% cnf(170471200,plain,(product(e_2,e_3,e_1)|product(e_3,e_3,e_1)),inference(forward_subsumption_resolution__resolution,[status(thm)],[153853320,153864976,153829280,168163664]),[]).
% 
% cnf(171539672,plain,(product(e_3,e_3,e_1)|~product(e_2,e_1,e_1)),inference(resolution,[status(thm)],[170471200,167302464]),[]).
% 
% fof(element_2,plain,(group_element(e_2)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153861288,plain,(group_element(e_2)),inference(rewrite,[status(thm)],[element_2]),[]).
% 
% fof(e_1_is_not_e_2,plain,(~equalish(e_1,e_2)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153869328,plain,(~equalish(e_1,e_2)),inference(rewrite,[status(thm)],[e_1_is_not_e_2]),[]).
% 
% cnf(167243200,plain,(~product(A,e_1,B)|~product(A,e_2,B)),inference(resolution,[status(thm)],[153915600,153869328]),[]).
% 
% cnf(168068952,plain,(~product(e_1,A,e_1)|~product(e_1,e_2,e_1)),inference(resolution,[status(thm)],[167993280,167243200]),[]).
% 
% cnf(170390360,plain,(product(e_2,e_2,e_1)|product(e_3,e_2,e_1)),inference(forward_subsumption_resolution__resolution,[status(thm)],[153853320,153861288,153829280,168068952]),[]).
% 
% cnf(170927944,plain,(product(e_3,e_2,e_1)|~product(e_2,e_1,e_1)),inference(resolution,[status(thm)],[170390360,167243200]),[]).
% 
% fof(e_2_is_not_e_3,plain,(~equalish(e_2,e_3)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153880592,plain,(~equalish(e_2,e_3)),inference(rewrite,[status(thm)],[e_2_is_not_e_3]),[]).
% 
% cnf(167308480,plain,(~product(A,e_2,B)|~product(A,e_3,B)),inference(resolution,[status(thm)],[153915600,153880592]),[]).
% 
% cnf(173791432,plain,(~product(e_2,e_1,e_1)),inference(forward_subsumption_resolution__resolution,[status(thm)],[171539672,170927944,167308480]),[]).
% 
% cnf(166978752,plain,(product(e_1,e_1,e_1)|product(e_2,e_1,e_1)|product(e_3,e_1,e_1)),inference(resolution,[status(thm)],[153829280,153853320]),[]).
% 
% cnf(173879456,plain,(product(e_1,e_1,e_1)|product(e_3,e_1,e_1)),inference(resolution,[status(thm)],[173791432,166978752]),[]).
% 
% fof(product_total_function2,plain,(~product(A,B,C)|~product(A,B,D)|equalish(C,D)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153911456,plain,(~product(A,B,C)|~product(A,B,D)|equalish(C,D)),inference(rewrite,[status(thm)],[product_total_function2]),[]).
% 
% cnf(167228568,plain,(~product(A,B,e_1)|~product(A,B,e_2)),inference(resolution,[status(thm)],[153911456,153869328]),[]).
% 
% cnf(173934720,plain,(product(e_3,e_1,e_1)|~product(e_1,e_1,e_2)),inference(resolution,[status(thm)],[173879456,167228568]),[]).
% 
% cnf(170931648,plain,(product(e_2,e_2,e_1)|~product(e_3,e_1,e_1)),inference(resolution,[status(thm)],[170390360,167243200]),[]).
% 
% cnf(168431848,plain,(~product(A,e_2,e_1)|~product(e_1,e_1,A)),inference(resolution,[status(thm)],[168068952,153844832]),[]).
% 
% cnf(174207552,plain,(~product(e_1,e_1,e_2)),inference(forward_subsumption_resolution__resolution,[status(thm)],[173934720,170931648,168431848]),[]).
% 
% cnf(168076680,plain,(~product(e_2,A,e_2)|~product(e_2,e_1,e_2)),inference(resolution,[status(thm)],[167993280,167243200]),[]).
% 
% cnf(170398680,plain,(product(e_1,e_1,e_2)|product(e_3,e_1,e_2)),inference(forward_subsumption_resolution__resolution,[status(thm)],[153853320,153861288,153829280,168076680]),[]).
% 
% cnf(174435552,plain,(product(e_3,e_1,e_2)),inference(resolution,[status(thm)],[174207552,170398680]),[]).
% 
% cnf(174485776,plain,(~product(e_3,e_3,e_2)),inference(resolution,[status(thm)],[174435552,167302464]),[]).
% 
% cnf(168189760,plain,(~product(e_2,A,e_2)|~product(e_2,e_3,e_2)),inference(resolution,[status(thm)],[167993280,167308480]),[]).
% 
% cnf(170491688,plain,(product(e_1,e_3,e_2)|product(e_3,e_3,e_2)),inference(forward_subsumption_resolution__resolution,[status(thm)],[153861288,153864976,153829280,168189760]),[]).
% 
% cnf(174875128,plain,(product(e_1,e_3,e_2)),inference(resolution,[status(thm)],[174485776,170491688]),[]).
% 
% fof(qg3,plain,(~product(A,B,C)|~product(A,C,D)|product(D,B,A)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/GRP/GRP130-4.003.tptp',unknown),[]).
% 
% cnf(153923760,plain,(~product(A,B,C)|~product(A,C,D)|product(D,B,A)),inference(rewrite,[status(thm)],[qg3]),[]).
% 
% cnf(175044064,plain,(~product(e_1,A,e_3)|product(e_2,A,e_1)),inference(resolution,[status(thm)],[174875128,153923760]),[]).
% 
% cnf(171547576,plain,(product(e_3,e_3,e_1)|~product(e_2,e_2,e_1)),inference(resolution,[status(thm)],[170471200,167308480]),[]).
% 
% cnf(168202424,plain,(~product(e_3,A,e_3)|~product(e_3,e_2,e_3)),inference(resolution,[status(thm)],[167993280,167308480]),[]).
% 
% cnf(168764720,plain,(~product(A,e_2,e_3)|~product(e_3,e_3,A)),inference(resolution,[status(thm)],[168202424,153844832]),[]).
% 
% cnf(192404472,plain,(~product(e_1,e_2,e_3)),inference(forward_subsumption_resolution__resolution,[status(thm)],[175044064,171547576,168764720]),[]).
% 
% cnf(168450184,plain,(~product(A,e_1,e_2)|~product(e_2,e_2,A)),inference(resolution,[status(thm)],[168076680,153844832]),[]).
% 
% cnf(174581416,plain,(~product(e_2,e_2,e_3)),inference(resolution,[status(thm)],[174435552,168450184]),[]).
% 
% cnf(170499936,plain,(product(e_1,e_2,e_3)|product(e_2,e_2,e_3)),inference(forward_subsumption_resolution__resolution,[status(thm)],[153861288,153864976,153829280,168202424]),[]).
% 
% cnf(175087104,plain,(product(e_1,e_2,e_3)),inference(resolution,[status(thm)],[174581416,170499936]),[]).
% 
% cnf(contradiction,plain,$false,inference(resolution,[status(thm)],[192404472,175087104]),[]).
% 
% END OF PROOF SEQUENCE
% 
%------------------------------------------------------------------------------