TSTP Solution File: LCL442-2 by Otter---3.3

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Otter---3.3
% Problem  : LCL442-2 : TPTP v8.1.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : otter-tptp-script %s

% Computer : n019.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Wed Jul 27 13:04:27 EDT 2022

% Result   : Unsatisfiable 1.73s 1.92s
% Output   : Refutation 1.73s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   11
%            Number of leaves      :   12
% Syntax   : Number of clauses     :   25 (   8 unt;   7 nHn;  14 RR)
%            Number of literals    :   44 (   0 equ;  13 neg)
%            Maximal clause size   :    3 (   1 avg)
%            Maximal term depth    :    4 (   1 avg)
%            Number of predicates  :    3 (   2 usr;   1 prp; 0-3 aty)
%            Number of functors    :   10 (  10 usr;   5 con; 0-3 aty)
%            Number of variables   :   30 (  14 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(1,axiom,
    ( c_in(v_pl1,c_PropLog_Othms(c_PropLog_Ohyps(v_pl1,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))
    | ~ c_PropLog_Oeval(v_tt,v_pl1,t_a) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(2,axiom,
    ( c_in(v_pl2,c_PropLog_Othms(c_PropLog_Ohyps(v_pl2,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))
    | ~ c_PropLog_Oeval(v_tt,v_pl2,t_a) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(3,axiom,
    ( c_PropLog_Oeval(v_tt,v_pl1,t_a)
    | ~ c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(4,axiom,
    ( ~ c_PropLog_Oeval(v_tt,v_pl2,t_a)
    | ~ c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(5,axiom,
    ( ~ c_in(c_PropLog_Opl_Oop_A_N_62(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a))
    | c_PropLog_Oeval(v_tt,v_pl2,t_a)
    | ~ c_PropLog_Oeval(v_tt,v_pl1,t_a) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(6,axiom,
    ( ~ c_in(c_PropLog_Opl_Oop_A_N_62(A,c_PropLog_Opl_Ofalse,B),c_PropLog_Othms(C,B),tc_PropLog_Opl(B))
    | c_in(c_PropLog_Opl_Oop_A_N_62(A,D,B),c_PropLog_Othms(C,B),tc_PropLog_Opl(B)) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(7,axiom,
    ( ~ c_in(A,c_PropLog_Othms(B,C),tc_PropLog_Opl(C))
    | ~ c_in(c_PropLog_Opl_Oop_A_N_62(D,c_PropLog_Opl_Ofalse,C),c_PropLog_Othms(B,C),tc_PropLog_Opl(C))
    | c_in(c_PropLog_Opl_Oop_A_N_62(c_PropLog_Opl_Oop_A_N_62(A,D,C),c_PropLog_Opl_Ofalse,C),c_PropLog_Othms(B,C),tc_PropLog_Opl(C)) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(8,axiom,
    ( ~ c_in(A,c_PropLog_Othms(B,C),tc_PropLog_Opl(C))
    | c_in(A,c_PropLog_Othms(c_union(B,D,tc_PropLog_Opl(C)),C),tc_PropLog_Opl(C)) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(9,axiom,
    ( ~ c_in(A,c_PropLog_Othms(B,C),tc_PropLog_Opl(C))
    | c_in(A,c_PropLog_Othms(c_union(D,B,tc_PropLog_Opl(C)),C),tc_PropLog_Opl(C)) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(10,axiom,
    ( ~ c_in(A,c_PropLog_Othms(B,C),tc_PropLog_Opl(C))
    | c_in(c_PropLog_Opl_Oop_A_N_62(D,A,C),c_PropLog_Othms(B,C),tc_PropLog_Opl(C)) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(12,axiom,
    ( c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_PropLog_Ohyps(v_pl1,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))
    | c_PropLog_Oeval(v_tt,v_pl1,t_a) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(13,axiom,
    ( c_in(c_PropLog_Opl_Oop_A_N_62(v_pl2,c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_PropLog_Ohyps(v_pl2,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))
    | c_PropLog_Oeval(v_tt,v_pl2,t_a) ),
    file('LCL442-2.p',unknown),
    [] ).

cnf(18,plain,
    ( c_PropLog_Oeval(v_tt,v_pl1,t_a)
    | c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,A,t_a),c_PropLog_Othms(c_PropLog_Ohyps(v_pl1,v_tt,t_a),t_a),tc_PropLog_Opl(t_a)) ),
    inference(hyper,[status(thm)],[12,6]),
    [iquote('hyper,12,6')] ).

cnf(23,plain,
    ( c_PropLog_Oeval(v_tt,v_pl2,t_a)
    | c_in(c_PropLog_Opl_Oop_A_N_62(v_pl2,A,t_a),c_PropLog_Othms(c_PropLog_Ohyps(v_pl2,v_tt,t_a),t_a),tc_PropLog_Opl(t_a)) ),
    inference(hyper,[status(thm)],[13,6]),
    [iquote('hyper,13,6')] ).

cnf(26,plain,
    ( c_PropLog_Oeval(v_tt,v_pl1,t_a)
    | c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,A,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),B,tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)) ),
    inference(hyper,[status(thm)],[18,8]),
    [iquote('hyper,18,8')] ).

cnf(29,plain,
    ( c_PropLog_Oeval(v_tt,v_pl2,t_a)
    | c_in(c_PropLog_Opl_Oop_A_N_62(v_pl2,A,t_a),c_PropLog_Othms(c_union(B,c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)) ),
    inference(hyper,[status(thm)],[23,9]),
    [iquote('hyper,23,9')] ).

cnf(48,plain,
    c_PropLog_Oeval(v_tt,v_pl1,t_a),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[26,3])]),
    [iquote('hyper,26,3,factor_simp')] ).

cnf(49,plain,
    c_in(v_pl1,c_PropLog_Othms(c_PropLog_Ohyps(v_pl1,v_tt,t_a),t_a),tc_PropLog_Opl(t_a)),
    inference(hyper,[status(thm)],[48,1]),
    [iquote('hyper,48,1')] ).

cnf(52,plain,
    c_in(v_pl1,c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),A,tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)),
    inference(hyper,[status(thm)],[49,8]),
    [iquote('hyper,49,8')] ).

cnf(64,plain,
    ( c_in(c_PropLog_Opl_Oop_A_N_62(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a))
    | c_PropLog_Oeval(v_tt,v_pl2,t_a) ),
    inference(hyper,[status(thm)],[52,7,29]),
    [iquote('hyper,52,7,29')] ).

cnf(297,plain,
    c_PropLog_Oeval(v_tt,v_pl2,t_a),
    inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[64,5,48])]),
    [iquote('hyper,64,5,48,factor_simp')] ).

cnf(298,plain,
    c_in(v_pl2,c_PropLog_Othms(c_PropLog_Ohyps(v_pl2,v_tt,t_a),t_a),tc_PropLog_Opl(t_a)),
    inference(hyper,[status(thm)],[297,2]),
    [iquote('hyper,297,2')] ).

cnf(299,plain,
    c_in(c_PropLog_Opl_Oop_A_N_62(A,v_pl2,t_a),c_PropLog_Othms(c_PropLog_Ohyps(v_pl2,v_tt,t_a),t_a),tc_PropLog_Opl(t_a)),
    inference(hyper,[status(thm)],[298,10]),
    [iquote('hyper,298,10')] ).

cnf(303,plain,
    c_in(c_PropLog_Opl_Oop_A_N_62(A,v_pl2,t_a),c_PropLog_Othms(c_union(B,c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)),
    inference(hyper,[status(thm)],[299,9]),
    [iquote('hyper,299,9')] ).

cnf(316,plain,
    $false,
    inference(hyper,[status(thm)],[303,4,297]),
    [iquote('hyper,303,4,297')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.11  % Problem  : LCL442-2 : TPTP v8.1.0. Released v3.2.0.
% 0.03/0.12  % Command  : otter-tptp-script %s
% 0.12/0.33  % Computer : n019.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
% 0.12/0.33  % WCLimit  : 300
% 0.12/0.33  % DateTime : Wed Jul 27 09:22:52 EDT 2022
% 0.12/0.33  % CPUTime  : 
% 1.73/1.90  ----- Otter 3.3f, August 2004 -----
% 1.73/1.90  The process was started by sandbox on n019.cluster.edu,
% 1.73/1.90  Wed Jul 27 09:22:52 2022
% 1.73/1.90  The command was "./otter".  The process ID is 7441.
% 1.73/1.90  
% 1.73/1.90  set(prolog_style_variables).
% 1.73/1.90  set(auto).
% 1.73/1.90     dependent: set(auto1).
% 1.73/1.90     dependent: set(process_input).
% 1.73/1.90     dependent: clear(print_kept).
% 1.73/1.90     dependent: clear(print_new_demod).
% 1.73/1.90     dependent: clear(print_back_demod).
% 1.73/1.90     dependent: clear(print_back_sub).
% 1.73/1.90     dependent: set(control_memory).
% 1.73/1.90     dependent: assign(max_mem, 12000).
% 1.73/1.90     dependent: assign(pick_given_ratio, 4).
% 1.73/1.90     dependent: assign(stats_level, 1).
% 1.73/1.90     dependent: assign(max_seconds, 10800).
% 1.73/1.90  clear(print_given).
% 1.73/1.90  
% 1.73/1.90  list(usable).
% 1.73/1.90  0 [] c_in(v_pl1,c_PropLog_Othms(c_PropLog_Ohyps(v_pl1,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))| -c_PropLog_Oeval(v_tt,v_pl1,t_a).
% 1.73/1.90  0 [] c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_PropLog_Ohyps(v_pl1,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))|c_PropLog_Oeval(v_tt,v_pl1,t_a).
% 1.73/1.90  0 [] c_in(v_pl2,c_PropLog_Othms(c_PropLog_Ohyps(v_pl2,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))| -c_PropLog_Oeval(v_tt,v_pl2,t_a).
% 1.73/1.90  0 [] c_in(c_PropLog_Opl_Oop_A_N_62(v_pl2,c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_PropLog_Ohyps(v_pl2,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))|c_PropLog_Oeval(v_tt,v_pl2,t_a).
% 1.73/1.90  0 [] c_PropLog_Oeval(v_tt,v_pl1,t_a)| -c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)).
% 1.73/1.90  0 [] -c_PropLog_Oeval(v_tt,v_pl2,t_a)| -c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)).
% 1.73/1.90  0 [] -c_in(c_PropLog_Opl_Oop_A_N_62(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a))|c_PropLog_Oeval(v_tt,v_pl2,t_a)| -c_PropLog_Oeval(v_tt,v_pl1,t_a).
% 1.73/1.90  0 [] -c_in(c_PropLog_Opl_Oop_A_N_62(V_p,c_PropLog_Opl_Ofalse,T_a),c_PropLog_Othms(V_H,T_a),tc_PropLog_Opl(T_a))|c_in(c_PropLog_Opl_Oop_A_N_62(V_p,V_q,T_a),c_PropLog_Othms(V_H,T_a),tc_PropLog_Opl(T_a)).
% 1.73/1.90  0 [] -c_in(V_p,c_PropLog_Othms(V_H,T_a),tc_PropLog_Opl(T_a))| -c_in(c_PropLog_Opl_Oop_A_N_62(V_q,c_PropLog_Opl_Ofalse,T_a),c_PropLog_Othms(V_H,T_a),tc_PropLog_Opl(T_a))|c_in(c_PropLog_Opl_Oop_A_N_62(c_PropLog_Opl_Oop_A_N_62(V_p,V_q,T_a),c_PropLog_Opl_Ofalse,T_a),c_PropLog_Othms(V_H,T_a),tc_PropLog_Opl(T_a)).
% 1.73/1.90  0 [] -c_in(V_p,c_PropLog_Othms(V_G,T_a),tc_PropLog_Opl(T_a))|c_in(V_p,c_PropLog_Othms(c_union(V_G,V_B,tc_PropLog_Opl(T_a)),T_a),tc_PropLog_Opl(T_a)).
% 1.73/1.90  0 [] -c_in(V_p,c_PropLog_Othms(V_G,T_a),tc_PropLog_Opl(T_a))|c_in(V_p,c_PropLog_Othms(c_union(V_A,V_G,tc_PropLog_Opl(T_a)),T_a),tc_PropLog_Opl(T_a)).
% 1.73/1.90  0 [] -c_in(V_q,c_PropLog_Othms(V_H,T_a),tc_PropLog_Opl(T_a))|c_in(c_PropLog_Opl_Oop_A_N_62(V_p,V_q,T_a),c_PropLog_Othms(V_H,T_a),tc_PropLog_Opl(T_a)).
% 1.73/1.90  end_of_list.
% 1.73/1.90  
% 1.73/1.90  SCAN INPUT: prop=0, horn=0, equality=0, symmetry=0, max_lits=3.
% 1.73/1.90  
% 1.73/1.90  This is a non-Horn set without equality.  The strategy will
% 1.73/1.90  be ordered hyper_res, unit deletion, and factoring, with
% 1.73/1.90  satellites in sos and with nuclei in usable.
% 1.73/1.90  
% 1.73/1.90     dependent: set(hyper_res).
% 1.73/1.90     dependent: set(factor).
% 1.73/1.90     dependent: set(unit_deletion).
% 1.73/1.90  
% 1.73/1.90  ------------> process usable:
% 1.73/1.90  ** KEPT (pick-wt=14): 1 [] c_in(v_pl1,c_PropLog_Othms(c_PropLog_Ohyps(v_pl1,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))| -c_PropLog_Oeval(v_tt,v_pl1,t_a).
% 1.73/1.90  ** KEPT (pick-wt=14): 2 [] c_in(v_pl2,c_PropLog_Othms(c_PropLog_Ohyps(v_pl2,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))| -c_PropLog_Oeval(v_tt,v_pl2,t_a).
% 1.73/1.90  ** KEPT (pick-wt=24): 3 [] c_PropLog_Oeval(v_tt,v_pl1,t_a)| -c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)).
% 1.73/1.90  ** KEPT (pick-wt=24): 4 [] -c_PropLog_Oeval(v_tt,v_pl2,t_a)| -c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a)).
% 1.73/1.92  ** KEPT (pick-wt=31): 5 [] -c_in(c_PropLog_Opl_Oop_A_N_62(c_PropLog_Opl_Oop_A_N_62(v_pl1,v_pl2,t_a),c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_union(c_PropLog_Ohyps(v_pl1,v_tt,t_a),c_PropLog_Ohyps(v_pl2,v_tt,t_a),tc_PropLog_Opl(t_a)),t_a),tc_PropLog_Opl(t_a))|c_PropLog_Oeval(v_tt,v_pl2,t_a)| -c_PropLog_Oeval(v_tt,v_pl1,t_a).
% 1.73/1.92  ** KEPT (pick-wt=20): 6 [] -c_in(c_PropLog_Opl_Oop_A_N_62(A,c_PropLog_Opl_Ofalse,B),c_PropLog_Othms(C,B),tc_PropLog_Opl(B))|c_in(c_PropLog_Opl_Oop_A_N_62(A,D,B),c_PropLog_Othms(C,B),tc_PropLog_Opl(B)).
% 1.73/1.92  ** KEPT (pick-wt=30): 7 [] -c_in(A,c_PropLog_Othms(B,C),tc_PropLog_Opl(C))| -c_in(c_PropLog_Opl_Oop_A_N_62(D,c_PropLog_Opl_Ofalse,C),c_PropLog_Othms(B,C),tc_PropLog_Opl(C))|c_in(c_PropLog_Opl_Oop_A_N_62(c_PropLog_Opl_Oop_A_N_62(A,D,C),c_PropLog_Opl_Ofalse,C),c_PropLog_Othms(B,C),tc_PropLog_Opl(C)).
% 1.73/1.92  ** KEPT (pick-wt=18): 8 [] -c_in(A,c_PropLog_Othms(B,C),tc_PropLog_Opl(C))|c_in(A,c_PropLog_Othms(c_union(B,D,tc_PropLog_Opl(C)),C),tc_PropLog_Opl(C)).
% 1.73/1.92  ** KEPT (pick-wt=18): 9 [] -c_in(A,c_PropLog_Othms(B,C),tc_PropLog_Opl(C))|c_in(A,c_PropLog_Othms(c_union(D,B,tc_PropLog_Opl(C)),C),tc_PropLog_Opl(C)).
% 1.73/1.92  ** KEPT (pick-wt=17): 10 [] -c_in(A,c_PropLog_Othms(B,C),tc_PropLog_Opl(C))|c_in(c_PropLog_Opl_Oop_A_N_62(D,A,C),c_PropLog_Othms(B,C),tc_PropLog_Opl(C)).
% 1.73/1.92  
% 1.73/1.92  ------------> process sos:
% 1.73/1.92  ** KEPT (pick-wt=17): 12 [] c_in(c_PropLog_Opl_Oop_A_N_62(v_pl1,c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_PropLog_Ohyps(v_pl1,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))|c_PropLog_Oeval(v_tt,v_pl1,t_a).
% 1.73/1.92  ** KEPT (pick-wt=17): 13 [] c_in(c_PropLog_Opl_Oop_A_N_62(v_pl2,c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_PropLog_Ohyps(v_pl2,v_tt,t_a),t_a),tc_PropLog_Opl(t_a))|c_PropLog_Oeval(v_tt,v_pl2,t_a).
% 1.73/1.92  
% 1.73/1.92  ======= end of input processing =======
% 1.73/1.92  
% 1.73/1.92  =========== start of search ===========
% 1.73/1.92  
% 1.73/1.92  -------- PROOF -------- 
% 1.73/1.92  
% 1.73/1.92  -----> EMPTY CLAUSE at   0.02 sec ----> 316 [hyper,303,4,297] $F.
% 1.73/1.92  
% 1.73/1.92  Length of proof is 12.  Level of proof is 10.
% 1.73/1.92  
% 1.73/1.92  ---------------- PROOF ----------------
% 1.73/1.92  % SZS status Unsatisfiable
% 1.73/1.92  % SZS output start Refutation
% See solution above
% 1.73/1.92  ------------ end of proof -------------
% 1.73/1.92  
% 1.73/1.92  
% 1.73/1.92  Search stopped by max_proofs option.
% 1.73/1.92  
% 1.73/1.92  
% 1.73/1.92  Search stopped by max_proofs option.
% 1.73/1.92  
% 1.73/1.92  ============ end of search ============
% 1.73/1.92  
% 1.73/1.92  -------------- statistics -------------
% 1.73/1.92  clauses given                 64
% 1.73/1.92  clauses generated            417
% 1.73/1.92  clauses kept                 315
% 1.73/1.92  clauses forward subsumed     113
% 1.73/1.92  clauses back subsumed        214
% 1.73/1.92  Kbytes malloced             1953
% 1.73/1.92  
% 1.73/1.92  ----------- times (seconds) -----------
% 1.73/1.92  user CPU time          0.02          (0 hr, 0 min, 0 sec)
% 1.73/1.92  system CPU time        0.00          (0 hr, 0 min, 0 sec)
% 1.73/1.92  wall-clock time        1             (0 hr, 0 min, 1 sec)
% 1.73/1.92  
% 1.73/1.92  That finishes the proof of the theorem.
% 1.73/1.92  
% 1.73/1.92  Process 7441 finished Wed Jul 27 09:22:53 2022
% 1.73/1.92  Otter interrupted
% 1.73/1.92  PROOF FOUND
%------------------------------------------------------------------------------