TSTP Solution File: GRP129-4.004 by Otter---3.3

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Otter---3.3
% Problem  : GRP129-4.004 : TPTP v8.1.0. Bugfixed v1.2.1.
% Transfm  : none
% Format   : tptp:raw
% Command  : otter-tptp-script %s

% Computer : n024.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 Jul 27 12:56:29 EDT 2022

% Result   : Unsatisfiable 1.94s 2.13s
% Output   : Refutation 1.94s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   22
%            Number of leaves      :   21
% Syntax   : Number of clauses     :   65 (  19 unt;  39 nHn;  65 RR)
%            Number of literals    :  154 (   0 equ;  30 neg)
%            Maximal clause size   :    6 (   2 avg)
%            Maximal term depth    :    1 (   1 avg)
%            Number of predicates  :    4 (   3 usr;   1 prp; 0-3 aty)
%            Number of functors    :    4 (   4 usr;   4 con; 0-0 aty)
%            Number of variables   :   33 (   1 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(1,axiom,
    ( ~ group_element(A)
    | ~ group_element(B)
    | product(e_1,A,B)
    | product(e_2,A,B)
    | product(e_3,A,B)
    | product(e_4,A,B) ),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(2,axiom,
    ( ~ group_element(A)
    | ~ group_element(B)
    | product(A,e_1,B)
    | product(A,e_2,B)
    | product(A,e_3,B)
    | product(A,e_4,B) ),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(3,axiom,
    ( product(A,B,C)
    | ~ product(C,A,D)
    | ~ product(B,C,D) ),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(4,axiom,
    ( product(A,B,C)
    | ~ product(B,D,C)
    | ~ product(D,A,B) ),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(5,axiom,
    ~ e_qualish(e_1,e_2),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(6,axiom,
    ~ e_qualish(e_1,e_3),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(7,axiom,
    ~ e_qualish(e_1,e_4),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(8,axiom,
    ~ e_qualish(e_2,e_1),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(9,axiom,
    ~ e_qualish(e_2,e_3),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(10,axiom,
    ~ e_qualish(e_2,e_4),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(11,axiom,
    ~ e_qualish(e_3,e_1),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(13,axiom,
    ~ e_qualish(e_3,e_4),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(14,axiom,
    ~ e_qualish(e_4,e_1),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(16,axiom,
    ~ e_qualish(e_4,e_3),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(17,axiom,
    ( ~ group_element(A)
    | ~ group_element(B)
    | product(A,B,e_1)
    | product(A,B,e_2)
    | product(A,B,e_3)
    | product(A,B,e_4) ),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(18,axiom,
    ( ~ product(A,B,C)
    | ~ product(A,B,D)
    | e_qualish(C,D) ),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(19,axiom,
    ( ~ product(A,B,C)
    | ~ product(A,D,C)
    | e_qualish(B,D) ),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(20,axiom,
    ( ~ product(A,B,C)
    | ~ product(D,B,C)
    | e_qualish(A,D) ),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(21,axiom,
    ( ~ product(A,B,C)
    | ~ product(B,C,D)
    | product(C,A,D) ),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(24,plain,
    ( product(A,A,A)
    | ~ product(A,A,B) ),
    inference(factor,[status(thm)],[3]),
    [iquote('factor,3.2.3')] ).

cnf(25,plain,
    ( ~ group_element(A)
    | product(A,A,e_1)
    | product(A,A,e_2)
    | product(A,A,e_3)
    | product(A,A,e_4) ),
    inference(factor,[status(thm)],[17]),
    [iquote('factor,17.1.2')] ).

cnf(29,axiom,
    group_element(e_1),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(30,axiom,
    group_element(e_2),
    file('GRP129-4.004.p',unknown),
    [] ).

cnf(33,plain,
    ( product(e_1,e_1,e_1)
    | product(e_1,e_1,e_2)
    | product(e_1,e_1,e_3)
    | product(e_1,e_1,e_4) ),
    inference(hyper,[status(thm)],[29,25]),
    [iquote('hyper,29,25')] ).

cnf(36,plain,
    ( product(e_2,e_2,e_1)
    | product(e_2,e_2,e_2)
    | product(e_2,e_2,e_3)
    | product(e_2,e_2,e_4) ),
    inference(hyper,[status(thm)],[30,25]),
    [iquote('hyper,30,25')] ).

cnf(39,plain,
    ( product(e_1,e_2,e_1)
    | product(e_1,e_2,e_2)
    | product(e_1,e_2,e_3)
    | product(e_1,e_2,e_4) ),
    inference(hyper,[status(thm)],[30,17,29]),
    [iquote('hyper,30,17,29')] ).

cnf(40,plain,
    ( product(e_2,e_1,e_1)
    | product(e_2,e_1,e_2)
    | product(e_2,e_1,e_3)
    | product(e_2,e_1,e_4) ),
    inference(hyper,[status(thm)],[30,17,29]),
    [iquote('hyper,30,17,29')] ).

cnf(41,plain,
    ( product(e_1,e_1,e_2)
    | product(e_1,e_2,e_2)
    | product(e_1,e_3,e_2)
    | product(e_1,e_4,e_2) ),
    inference(hyper,[status(thm)],[30,2,29]),
    [iquote('hyper,30,2,29')] ).

cnf(44,plain,
    ( product(e_1,e_2,e_1)
    | product(e_2,e_2,e_1)
    | product(e_3,e_2,e_1)
    | product(e_4,e_2,e_1) ),
    inference(hyper,[status(thm)],[30,1,29]),
    [iquote('hyper,30,1,29')] ).

cnf(84,plain,
    ( product(e_1,e_1,e_1)
    | product(e_1,e_1,e_3)
    | product(e_1,e_1,e_4) ),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[33,24])]),
    [iquote('hyper,33,24,factor_simp')] ).

cnf(101,plain,
    ( product(e_1,e_1,e_1)
    | product(e_1,e_1,e_4) ),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[84,24])]),
    [iquote('hyper,84,24,factor_simp')] ).

cnf(108,plain,
    product(e_1,e_1,e_1),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[101,24])]),
    [iquote('hyper,101,24,factor_simp')] ).

cnf(111,plain,
    ( product(e_2,e_2,e_2)
    | product(e_2,e_2,e_3)
    | product(e_2,e_2,e_4) ),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[36,24])]),
    [iquote('hyper,36,24,factor_simp')] ).

cnf(122,plain,
    ( product(e_2,e_2,e_2)
    | product(e_2,e_2,e_4) ),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[111,24])]),
    [iquote('hyper,111,24,factor_simp')] ).

cnf(129,plain,
    product(e_2,e_2,e_2),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[122,24])]),
    [iquote('hyper,122,24,factor_simp')] ).

cnf(131,plain,
    ( product(e_1,e_2,e_2)
    | product(e_1,e_2,e_3)
    | product(e_1,e_2,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[39,19,108]),5]),
    [iquote('hyper,39,19,108,unit_del,5')] ).

cnf(137,plain,
    ( product(e_1,e_2,e_3)
    | product(e_1,e_2,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[131,20,129]),8]),
    [iquote('hyper,131,20,129,unit_del,8')] ).

cnf(143,plain,
    ( product(e_2,e_1,e_2)
    | product(e_2,e_1,e_3)
    | product(e_2,e_1,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[40,20,108]),5]),
    [iquote('hyper,40,20,108,unit_del,5')] ).

cnf(155,plain,
    ( product(e_2,e_1,e_3)
    | product(e_2,e_1,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[143,19,129]),8]),
    [iquote('hyper,143,19,129,unit_del,8')] ).

cnf(163,plain,
    ( product(e_2,e_1,e_4)
    | product(e_2,e_2,e_1)
    | product(e_1,e_2,e_4) ),
    inference(hyper,[status(thm)],[155,3,137]),
    [iquote('hyper,155,3,137')] ).

cnf(166,plain,
    ( product(e_2,e_1,e_3)
    | product(e_2,e_2,e_1)
    | product(e_1,e_2,e_3) ),
    inference(hyper,[status(thm)],[155,3,137]),
    [iquote('hyper,155,3,137')] ).

cnf(170,plain,
    ( product(e_1,e_2,e_2)
    | product(e_1,e_3,e_2)
    | product(e_1,e_4,e_2) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[41,18,108]),5]),
    [iquote('hyper,41,18,108,unit_del,5')] ).

cnf(182,plain,
    ( product(e_2,e_1,e_4)
    | product(e_1,e_2,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[163,18,129]),8]),
    [iquote('hyper,163,18,129,unit_del,8')] ).

cnf(203,plain,
    ( product(e_2,e_1,e_3)
    | product(e_1,e_2,e_3) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[166,18,129]),8]),
    [iquote('hyper,166,18,129,unit_del,8')] ).

cnf(230,plain,
    ( product(e_1,e_3,e_2)
    | product(e_1,e_4,e_2) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[170,20,129]),8]),
    [iquote('hyper,170,20,129,unit_del,8')] ).

cnf(246,plain,
    ( product(e_1,e_4,e_2)
    | product(e_3,e_2,e_2)
    | product(e_1,e_2,e_3) ),
    inference(hyper,[status(thm)],[230,21,203]),
    [iquote('hyper,230,21,203')] ).

cnf(253,plain,
    ( product(e_1,e_3,e_2)
    | product(e_4,e_2,e_2)
    | product(e_1,e_2,e_4) ),
    inference(hyper,[status(thm)],[230,21,182]),
    [iquote('hyper,230,21,182')] ).

cnf(263,plain,
    ( product(e_2,e_2,e_1)
    | product(e_3,e_2,e_1)
    | product(e_4,e_2,e_1) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[44,19,108]),5]),
    [iquote('hyper,44,19,108,unit_del,5')] ).

cnf(405,plain,
    ( product(e_1,e_4,e_2)
    | product(e_1,e_2,e_3) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[246,20,129]),9]),
    [iquote('hyper,246,20,129,unit_del,9')] ).

cnf(415,plain,
    ( product(e_1,e_2,e_3)
    | product(e_4,e_2,e_3) ),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[405,4,203])]),
    [iquote('hyper,405,4,203,factor_simp')] ).

cnf(423,plain,
    ( product(e_1,e_4,e_2)
    | product(e_2,e_1,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[405,18,182]),16]),
    [iquote('hyper,405,18,182,unit_del,16')] ).

cnf(434,plain,
    ( product(e_4,e_2,e_3)
    | product(e_2,e_1,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[415,18,182]),16]),
    [iquote('hyper,415,18,182,unit_del,16')] ).

cnf(481,plain,
    ( product(e_1,e_4,e_2)
    | product(e_3,e_2,e_4) ),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[423,4,230])]),
    [iquote('hyper,423,4,230,factor_simp')] ).

cnf(569,plain,
    ( product(e_1,e_3,e_2)
    | product(e_1,e_2,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[253,20,129]),10]),
    [iquote('hyper,253,20,129,unit_del,10')] ).

cnf(577,plain,
    ( product(e_1,e_2,e_4)
    | product(e_3,e_2,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[569,19,481]),16]),
    [iquote('hyper,569,19,481,unit_del,16')] ).

cnf(626,plain,
    ( product(e_3,e_2,e_4)
    | product(e_2,e_1,e_3) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[577,18,203]),13]),
    [iquote('hyper,577,18,203,unit_del,13')] ).

cnf(709,plain,
    ( product(e_3,e_2,e_1)
    | product(e_4,e_2,e_1) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[263,18,129]),8]),
    [iquote('hyper,263,18,129,unit_del,8')] ).

cnf(840,plain,
    ( product(e_4,e_2,e_1)
    | product(e_2,e_1,e_3) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[709,18,626]),14]),
    [iquote('hyper,709,18,626,unit_del,14')] ).

cnf(868,plain,
    ( product(e_3,e_2,e_1)
    | product(e_2,e_1,e_4) ),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[709,18,434]),11]),
    [iquote('hyper,709,18,434,unit_del,11')] ).

cnf(884,plain,
    ( product(e_2,e_1,e_3)
    | product(e_1,e_4,e_1) ),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[840,4,155])]),
    [iquote('hyper,840,4,155,factor_simp')] ).

cnf(1118,plain,
    product(e_2,e_1,e_3),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[884,19,108]),7]),
    [iquote('hyper,884,19,108,unit_del,7')] ).

cnf(1159,plain,
    product(e_3,e_2,e_1),
    inference(unit_del,[status(thm)],[inference(hyper,[status(thm)],[1118,18,868]),16]),
    [iquote('hyper,1118,18,868,unit_del,16')] ).

cnf(1165,plain,
    product(e_1,e_3,e_1),
    inference(hyper,[status(thm)],[1159,4,1118]),
    [iquote('hyper,1159,4,1118')] ).

cnf(1201,plain,
    e_qualish(e_1,e_3),
    inference(hyper,[status(thm)],[1165,19,108]),
    [iquote('hyper,1165,19,108')] ).

cnf(1202,plain,
    $false,
    inference(binary,[status(thm)],[1201,6]),
    [iquote('binary,1201.1,6.1')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : GRP129-4.004 : TPTP v8.1.0. Bugfixed v1.2.1.
% 0.07/0.12  % Command  : otter-tptp-script %s
% 0.12/0.33  % Computer : n024.cluster.edu
% 0.12/0.33  % Model    : x86_64 x86_64
% 0.12/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33  % Memory   : 8042.1875MB
% 0.12/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33  % CPULimit : 300
% 0.12/0.34  % WCLimit  : 300
% 0.12/0.34  % DateTime : Wed Jul 27 05:01:55 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 1.94/2.13  ----- Otter 3.3f, August 2004 -----
% 1.94/2.13  The process was started by sandbox on n024.cluster.edu,
% 1.94/2.13  Wed Jul 27 05:01:55 2022
% 1.94/2.13  The command was "./otter".  The process ID is 12279.
% 1.94/2.13  
% 1.94/2.13  set(prolog_style_variables).
% 1.94/2.13  set(auto).
% 1.94/2.13     dependent: set(auto1).
% 1.94/2.13     dependent: set(process_input).
% 1.94/2.13     dependent: clear(print_kept).
% 1.94/2.13     dependent: clear(print_new_demod).
% 1.94/2.13     dependent: clear(print_back_demod).
% 1.94/2.13     dependent: clear(print_back_sub).
% 1.94/2.13     dependent: set(control_memory).
% 1.94/2.13     dependent: assign(max_mem, 12000).
% 1.94/2.13     dependent: assign(pick_given_ratio, 4).
% 1.94/2.13     dependent: assign(stats_level, 1).
% 1.94/2.13     dependent: assign(max_seconds, 10800).
% 1.94/2.13  clear(print_given).
% 1.94/2.13  
% 1.94/2.13  list(usable).
% 1.94/2.13  0 [] -group_element(X)| -group_element(Y)|product(e_1,X,Y)|product(e_2,X,Y)|product(e_3,X,Y)|product(e_4,X,Y).
% 1.94/2.13  0 [] -group_element(X)| -group_element(Y)|product(X,e_1,Y)|product(X,e_2,Y)|product(X,e_3,Y)|product(X,e_4,Y).
% 1.94/2.13  0 [] product(Y,X,Z1)| -product(Z1,Y,Z2)| -product(X,Z1,Z2).
% 1.94/2.13  0 [] product(X,Z1,Z2)| -product(Z1,Y,Z2)| -product(Y,X,Z1).
% 1.94/2.13  0 [] group_element(e_1).
% 1.94/2.13  0 [] group_element(e_2).
% 1.94/2.13  0 [] group_element(e_3).
% 1.94/2.13  0 [] group_element(e_4).
% 1.94/2.13  0 [] -e_qualish(e_1,e_2).
% 1.94/2.13  0 [] -e_qualish(e_1,e_3).
% 1.94/2.13  0 [] -e_qualish(e_1,e_4).
% 1.94/2.13  0 [] -e_qualish(e_2,e_1).
% 1.94/2.13  0 [] -e_qualish(e_2,e_3).
% 1.94/2.13  0 [] -e_qualish(e_2,e_4).
% 1.94/2.13  0 [] -e_qualish(e_3,e_1).
% 1.94/2.13  0 [] -e_qualish(e_3,e_2).
% 1.94/2.13  0 [] -e_qualish(e_3,e_4).
% 1.94/2.13  0 [] -e_qualish(e_4,e_1).
% 1.94/2.13  0 [] -e_qualish(e_4,e_2).
% 1.94/2.13  0 [] -e_qualish(e_4,e_3).
% 1.94/2.13  0 [] -group_element(X)| -group_element(Y)|product(X,Y,e_1)|product(X,Y,e_2)|product(X,Y,e_3)|product(X,Y,e_4).
% 1.94/2.13  0 [] -product(X,Y,W)| -product(X,Y,Z)|e_qualish(W,Z).
% 1.94/2.13  0 [] -product(X,W,Y)| -product(X,Z,Y)|e_qualish(W,Z).
% 1.94/2.13  0 [] -product(W,Y,X)| -product(Z,Y,X)|e_qualish(W,Z).
% 1.94/2.13  0 [] -product(Y,X,Z1)| -product(X,Z1,Z2)|product(Z1,Y,Z2).
% 1.94/2.13  end_of_list.
% 1.94/2.13  
% 1.94/2.13  SCAN INPUT: prop=0, horn=0, equality=0, symmetry=0, max_lits=6.
% 1.94/2.13  
% 1.94/2.13  This is a non-Horn set without equality.  The strategy will
% 1.94/2.13  be ordered hyper_res, unit deletion, and factoring, with
% 1.94/2.13  satellites in sos and with nuclei in usable.
% 1.94/2.13  
% 1.94/2.13     dependent: set(hyper_res).
% 1.94/2.13     dependent: set(factor).
% 1.94/2.13     dependent: set(unit_deletion).
% 1.94/2.13  
% 1.94/2.13  ------------> process usable:
% 1.94/2.13  ** KEPT (pick-wt=20): 1 [] -group_element(A)| -group_element(B)|product(e_1,A,B)|product(e_2,A,B)|product(e_3,A,B)|product(e_4,A,B).
% 1.94/2.13  ** KEPT (pick-wt=20): 2 [] -group_element(A)| -group_element(B)|product(A,e_1,B)|product(A,e_2,B)|product(A,e_3,B)|product(A,e_4,B).
% 1.94/2.13  ** KEPT (pick-wt=12): 3 [] product(A,B,C)| -product(C,A,D)| -product(B,C,D).
% 1.94/2.13  ** KEPT (pick-wt=12): 4 [] product(A,B,C)| -product(B,D,C)| -product(D,A,B).
% 1.94/2.13  ** KEPT (pick-wt=3): 5 [] -e_qualish(e_1,e_2).
% 1.94/2.13  ** KEPT (pick-wt=3): 6 [] -e_qualish(e_1,e_3).
% 1.94/2.13  ** KEPT (pick-wt=3): 7 [] -e_qualish(e_1,e_4).
% 1.94/2.13  ** KEPT (pick-wt=3): 8 [] -e_qualish(e_2,e_1).
% 1.94/2.13  ** KEPT (pick-wt=3): 9 [] -e_qualish(e_2,e_3).
% 1.94/2.13  ** KEPT (pick-wt=3): 10 [] -e_qualish(e_2,e_4).
% 1.94/2.13  ** KEPT (pick-wt=3): 11 [] -e_qualish(e_3,e_1).
% 1.94/2.13  ** KEPT (pick-wt=3): 12 [] -e_qualish(e_3,e_2).
% 1.94/2.13  ** KEPT (pick-wt=3): 13 [] -e_qualish(e_3,e_4).
% 1.94/2.13  ** KEPT (pick-wt=3): 14 [] -e_qualish(e_4,e_1).
% 1.94/2.13  ** KEPT (pick-wt=3): 15 [] -e_qualish(e_4,e_2).
% 1.94/2.13  ** KEPT (pick-wt=3): 16 [] -e_qualish(e_4,e_3).
% 1.94/2.13  ** KEPT (pick-wt=20): 17 [] -group_element(A)| -group_element(B)|product(A,B,e_1)|product(A,B,e_2)|product(A,B,e_3)|product(A,B,e_4).
% 1.94/2.13  ** KEPT (pick-wt=11): 18 [] -product(A,B,C)| -product(A,B,D)|e_qualish(C,D).
% 1.94/2.13  ** KEPT (pick-wt=11): 19 [] -product(A,B,C)| -product(A,D,C)|e_qualish(B,D).
% 1.94/2.13  ** KEPT (pick-wt=11): 20 [] -product(A,B,C)| -product(D,B,C)|e_qualish(A,D).
% 1.94/2.13  ** KEPT (pick-wt=12): 21 [] -product(A,B,C)| -product(B,C,D)|product(C,A,D).
% 1.94/2.13  
% 1.94/2.13  ------------> process sos:
% 1.94/2.13  ** KEPT (pick-wt=2): 29 [] group_element(e_1).
% 1.94/2.13  ** KEPT (pick-wt=2): 30 [] group_element(e_2).
% 1.94/2.13  ** KEPT (pick-wt=2): 31 [] group_element(e_3).
% 1.94/2.13  ** KEPT (pick-wt=2): 32 [] group_element(e_4).
% 1.94/2.13  
% 1.94/2.13  ======= end of input processing =======
% 1.94/2.13  
% 1.94/2.13  =========== start of search ===========
% 1.94/2.13  
% 1.94/2.13  -------- PROOF -------- 
% 1.94/2.13  
% 1.94/2.13  ----> UNIT CONFLICT at   0.19 sec ----> 1202 [binary,1201.1,6.1] $F.
% 1.94/2.13  
% 1.94/2.13  Length of proof is 43.  Level of proof is 21.
% 1.94/2.13  
% 1.94/2.13  ---------------- PROOF ----------------
% 1.94/2.13  % SZS status Unsatisfiable
% 1.94/2.13  % SZS output start Refutation
% See solution above
% 1.94/2.13  ------------ end of proof -------------
% 1.94/2.13  
% 1.94/2.13  
% 1.94/2.13  Search stopped by max_proofs option.
% 1.94/2.13  
% 1.94/2.13  
% 1.94/2.13  Search stopped by max_proofs option.
% 1.94/2.13  
% 1.94/2.13  ============ end of search ============
% 1.94/2.13  
% 1.94/2.13  -------------- statistics -------------
% 1.94/2.13  clauses given                107
% 1.94/2.13  clauses generated           7272
% 1.94/2.13  clauses kept                1201
% 1.94/2.13  clauses forward subsumed    6094
% 1.94/2.13  clauses back subsumed       1035
% 1.94/2.13  Kbytes malloced              976
% 1.94/2.13  
% 1.94/2.13  ----------- times (seconds) -----------
% 1.94/2.13  user CPU time          0.19          (0 hr, 0 min, 0 sec)
% 1.94/2.13  system CPU time        0.00          (0 hr, 0 min, 0 sec)
% 1.94/2.13  wall-clock time        2             (0 hr, 0 min, 2 sec)
% 1.94/2.13  
% 1.94/2.13  That finishes the proof of the theorem.
% 1.94/2.13  
% 1.94/2.13  Process 12279 finished Wed Jul 27 05:01:57 2022
% 1.94/2.13  Otter interrupted
% 1.94/2.13  PROOF FOUND
%------------------------------------------------------------------------------