TSTP Solution File: SWV318-2 by Otter---3.3

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Otter---3.3
% Problem  : SWV318-2 : TPTP v8.1.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : otter-tptp-script %s

% Computer : n022.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 13:20:28 EDT 2022

% Result   : Unsatisfiable 1.91s 2.08s
% Output   : Refutation 1.91s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    9
%            Number of leaves      :   13
% Syntax   : Number of clauses     :   26 (  13 unt;   3 nHn;  22 RR)
%            Number of literals    :   40 (   3 equ;  13 neg)
%            Maximal clause size   :    3 (   1 avg)
%            Maximal term depth    :    8 (   2 avg)
%            Number of predicates  :    3 (   1 usr;   1 prp; 0-3 aty)
%            Number of functors    :   27 (  27 usr;  13 con; 0-3 aty)
%            Number of variables   :   24 (   7 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(1,axiom,
    ( ~ c_in(c_Event_Oevent_OSays(A,B,C),c_List_Oset(D,tc_Event_Oevent),tc_Event_Oevent)
    | c_in(C,c_Message_Oanalz(c_Event_Oknows(c_Message_Oagent_OSpy,D)),tc_Message_Omsg) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(2,axiom,
    ( ~ c_in(c_Message_Omsg_OMPair(A,B),c_Message_Oparts(C),tc_Message_Omsg)
    | c_in(B,c_Message_Oparts(C),tc_Message_Omsg) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(3,axiom,
    ( ~ c_in(c_Message_Omsg_OMPair(A,B),c_Message_Oparts(C),tc_Message_Omsg)
    | c_in(A,c_Message_Oparts(C),tc_Message_Omsg) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(4,axiom,
    ( ~ c_in(A,B,tc_Message_Omsg)
    | c_in(A,c_Message_Oparts(B),tc_Message_Omsg) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(5,axiom,
    ( ~ c_in(A,c_Message_Oparts(B),tc_Message_Omsg)
    | c_Message_Oparts(c_insert(A,B,tc_Message_Omsg)) = c_Message_Oparts(B) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(6,axiom,
    ( ~ c_in(A,c_OtwayRees_Ootway,tc_List_Olist(tc_Event_Oevent))
    | ~ c_in(c_Event_Oevent_OGets(B,C),c_List_Oset(A,tc_Event_Oevent),tc_Event_Oevent)
    | c_in(c_Event_Oevent_OSays(v_sko__usf(B,C,A),B,C),c_List_Oset(A,tc_Event_Oevent),tc_Event_Oevent) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(7,axiom,
    ( ~ c_in(A,c_Event_Obad,tc_Message_Oagent)
    | c_in(c_Message_Omsg_OKey(c_Public_OshrK(A)),c_Event_Oknows(c_Message_Oagent_OSpy,B),tc_Message_Omsg) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(9,axiom,
    ( c_in(v_A,c_Event_Obad,tc_Message_Oagent)
    | ~ c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4)),tc_Message_Omsg) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(10,axiom,
    ( ~ c_in(v_A,c_Event_Obad,tc_Message_Oagent)
    | ~ c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_insert(v_X,c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4),tc_Message_Omsg)),tc_Message_Omsg) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(12,axiom,
    c_Message_Oparts(c_Message_Oanalz(A)) = c_Message_Oparts(A),
    file('SWV318-2.p',unknown),
    [] ).

cnf(14,axiom,
    c_in(v_evs4,c_OtwayRees_Ootway,tc_List_Olist(tc_Event_Oevent)),
    file('SWV318-2.p',unknown),
    [] ).

cnf(15,axiom,
    c_in(c_Event_Oevent_OGets(v_B,c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NA),c_Message_Omsg_OMPair(v_X,c_Message_Omsg_OCrypt(c_Public_OshrK(v_B),c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NB),c_Message_Omsg_OKey(v_K)))))),c_List_Oset(v_evs4,tc_Event_Oevent),tc_Event_Oevent),
    file('SWV318-2.p',unknown),
    [] ).

cnf(16,axiom,
    ( c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_insert(v_X,c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4),tc_Message_Omsg)),tc_Message_Omsg)
    | c_in(v_A,c_Event_Obad,tc_Message_Oagent) ),
    file('SWV318-2.p',unknown),
    [] ).

cnf(19,plain,
    ( ~ c_in(A,c_Message_Oanalz(B),tc_Message_Omsg)
    | c_in(A,c_Message_Oparts(B),tc_Message_Omsg) ),
    inference(para_from,[status(thm),theory(equality)],[12,4]),
    [iquote('para_from,12.1.1,4.2.2')] ).

cnf(24,plain,
    c_in(c_Event_Oevent_OSays(v_sko__usf(v_B,c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NA),c_Message_Omsg_OMPair(v_X,c_Message_Omsg_OCrypt(c_Public_OshrK(v_B),c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NB),c_Message_Omsg_OKey(v_K))))),v_evs4),v_B,c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NA),c_Message_Omsg_OMPair(v_X,c_Message_Omsg_OCrypt(c_Public_OshrK(v_B),c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NB),c_Message_Omsg_OKey(v_K)))))),c_List_Oset(v_evs4,tc_Event_Oevent),tc_Event_Oevent),
    inference(hyper,[status(thm)],[15,6,14]),
    [iquote('hyper,15,6,14')] ).

cnf(36,plain,
    ( c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_insert(v_X,c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4),tc_Message_Omsg)),tc_Message_Omsg)
    | c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Event_Oknows(c_Message_Oagent_OSpy,A),tc_Message_Omsg) ),
    inference(hyper,[status(thm)],[16,7]),
    [iquote('hyper,16,7')] ).

cnf(215,plain,
    c_in(c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NA),c_Message_Omsg_OMPair(v_X,c_Message_Omsg_OCrypt(c_Public_OshrK(v_B),c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NB),c_Message_Omsg_OKey(v_K))))),c_Message_Oanalz(c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4)),tc_Message_Omsg),
    inference(hyper,[status(thm)],[24,1]),
    [iquote('hyper,24,1')] ).

cnf(403,plain,
    c_in(c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NA),c_Message_Omsg_OMPair(v_X,c_Message_Omsg_OCrypt(c_Public_OshrK(v_B),c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NB),c_Message_Omsg_OKey(v_K))))),c_Message_Oparts(c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4)),tc_Message_Omsg),
    inference(hyper,[status(thm)],[215,19]),
    [iquote('hyper,215,19')] ).

cnf(514,plain,
    c_in(c_Message_Omsg_OMPair(v_X,c_Message_Omsg_OCrypt(c_Public_OshrK(v_B),c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NB),c_Message_Omsg_OKey(v_K)))),c_Message_Oparts(c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4)),tc_Message_Omsg),
    inference(hyper,[status(thm)],[403,2]),
    [iquote('hyper,403,2')] ).

cnf(569,plain,
    ( c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_insert(v_X,c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4),tc_Message_Omsg)),tc_Message_Omsg)
    | c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_Event_Oknows(c_Message_Oagent_OSpy,A)),tc_Message_Omsg) ),
    inference(hyper,[status(thm)],[36,4]),
    [iquote('hyper,36,4')] ).

cnf(630,plain,
    c_in(v_X,c_Message_Oparts(c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4)),tc_Message_Omsg),
    inference(hyper,[status(thm)],[514,3]),
    [iquote('hyper,514,3')] ).

cnf(651,plain,
    c_Message_Oparts(c_insert(v_X,c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4),tc_Message_Omsg)) = c_Message_Oparts(c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4)),
    inference(hyper,[status(thm)],[630,5]),
    [iquote('hyper,630,5')] ).

cnf(653,plain,
    c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4)),tc_Message_Omsg),
    inference(factor_simp,[status(thm)],[inference(demod,[status(thm),theory(equality)],[inference(back_demod,[status(thm)],[569]),651])]),
    [iquote('back_demod,569,demod,651,factor_simp')] ).

cnf(665,plain,
    ~ c_in(v_A,c_Event_Obad,tc_Message_Oagent),
    inference(unit_del,[status(thm)],[inference(demod,[status(thm),theory(equality)],[inference(back_demod,[status(thm)],[10]),651]),653]),
    [iquote('back_demod,10,demod,651,unit_del,653')] ).

cnf(688,plain,
    c_in(v_A,c_Event_Obad,tc_Message_Oagent),
    inference(hyper,[status(thm)],[653,9]),
    [iquote('hyper,653,9')] ).

cnf(689,plain,
    $false,
    inference(binary,[status(thm)],[688,665]),
    [iquote('binary,688.1,665.1')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.12  % Problem  : SWV318-2 : TPTP v8.1.0. Released v3.2.0.
% 0.11/0.13  % Command  : otter-tptp-script %s
% 0.13/0.35  % Computer : n022.cluster.edu
% 0.13/0.35  % Model    : x86_64 x86_64
% 0.13/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.35  % Memory   : 8042.1875MB
% 0.13/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.35  % CPULimit : 300
% 0.13/0.35  % WCLimit  : 300
% 0.13/0.35  % DateTime : Wed Jul 27 05:54:20 EDT 2022
% 0.13/0.35  % CPUTime  : 
% 1.75/1.96  ----- Otter 3.3f, August 2004 -----
% 1.75/1.96  The process was started by sandbox2 on n022.cluster.edu,
% 1.75/1.96  Wed Jul 27 05:54:20 2022
% 1.75/1.96  The command was "./otter".  The process ID is 23266.
% 1.75/1.96  
% 1.75/1.96  set(prolog_style_variables).
% 1.75/1.96  set(auto).
% 1.75/1.96     dependent: set(auto1).
% 1.75/1.96     dependent: set(process_input).
% 1.75/1.96     dependent: clear(print_kept).
% 1.75/1.96     dependent: clear(print_new_demod).
% 1.75/1.96     dependent: clear(print_back_demod).
% 1.75/1.96     dependent: clear(print_back_sub).
% 1.75/1.96     dependent: set(control_memory).
% 1.75/1.96     dependent: assign(max_mem, 12000).
% 1.75/1.96     dependent: assign(pick_given_ratio, 4).
% 1.75/1.96     dependent: assign(stats_level, 1).
% 1.75/1.96     dependent: assign(max_seconds, 10800).
% 1.75/1.96  clear(print_given).
% 1.75/1.96  
% 1.75/1.96  list(usable).
% 1.75/1.96  0 [] A=A.
% 1.75/1.96  0 [] -c_in(c_Event_Oevent_OSays(V_A,V_B,V_X),c_List_Oset(V_evs,tc_Event_Oevent),tc_Event_Oevent)|c_in(V_X,c_Message_Oanalz(c_Event_Oknows(c_Message_Oagent_OSpy,V_evs)),tc_Message_Omsg).
% 1.75/1.96  0 [] -c_in(c_Message_Omsg_OMPair(V_X,V_Y),c_Message_Oparts(V_H),tc_Message_Omsg)|c_in(V_Y,c_Message_Oparts(V_H),tc_Message_Omsg).
% 1.75/1.96  0 [] -c_in(c_Message_Omsg_OMPair(V_X,V_Y),c_Message_Oparts(V_H),tc_Message_Omsg)|c_in(V_X,c_Message_Oparts(V_H),tc_Message_Omsg).
% 1.75/1.96  0 [] -c_in(V_X,V_H,tc_Message_Omsg)|c_in(V_X,c_Message_Oparts(V_H),tc_Message_Omsg).
% 1.75/1.96  0 [] c_Message_Oparts(c_Message_Oanalz(V_H))=c_Message_Oparts(V_H).
% 1.75/1.96  0 [] -c_in(V_X,c_Message_Oparts(V_H),tc_Message_Omsg)|c_Message_Oparts(c_insert(V_X,V_H,tc_Message_Omsg))=c_Message_Oparts(V_H).
% 1.75/1.96  0 [] -c_in(V_evs,c_OtwayRees_Ootway,tc_List_Olist(tc_Event_Oevent))| -c_in(c_Event_Oevent_OGets(V_B,V_X),c_List_Oset(V_evs,tc_Event_Oevent),tc_Event_Oevent)|c_in(c_Event_Oevent_OSays(v_sko__usf(V_B,V_X,V_evs),V_B,V_X),c_List_Oset(V_evs,tc_Event_Oevent),tc_Event_Oevent).
% 1.75/1.96  0 [] -c_in(V_A,c_Event_Obad,tc_Message_Oagent)|c_in(c_Message_Omsg_OKey(c_Public_OshrK(V_A)),c_Event_Oknows(c_Message_Oagent_OSpy,V_evs),tc_Message_Omsg).
% 1.75/1.96  0 [] -c_in(V_a,V_A,T_a)|c_in(V_a,c_insert(V_b,V_A,T_a),T_a).
% 1.75/1.96  0 [] c_in(v_evs4,c_OtwayRees_Ootway,tc_List_Olist(tc_Event_Oevent)).
% 1.75/1.96  0 [] c_in(c_Event_Oevent_OGets(v_B,c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NA),c_Message_Omsg_OMPair(v_X,c_Message_Omsg_OCrypt(c_Public_OshrK(v_B),c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NB),c_Message_Omsg_OKey(v_K)))))),c_List_Oset(v_evs4,tc_Event_Oevent),tc_Event_Oevent).
% 1.75/1.96  0 [] c_in(v_A,c_Event_Obad,tc_Message_Oagent)| -c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4)),tc_Message_Omsg).
% 1.75/1.96  0 [] -c_in(v_A,c_Event_Obad,tc_Message_Oagent)| -c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_insert(v_X,c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4),tc_Message_Omsg)),tc_Message_Omsg).
% 1.75/1.96  0 [] c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_insert(v_X,c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4),tc_Message_Omsg)),tc_Message_Omsg)|c_in(v_A,c_Event_Obad,tc_Message_Oagent).
% 1.75/1.96  end_of_list.
% 1.75/1.96  
% 1.75/1.96  SCAN INPUT: prop=0, horn=0, equality=1, symmetry=0, max_lits=3.
% 1.75/1.96  
% 1.75/1.96  This ia a non-Horn set with equality.  The strategy will be
% 1.75/1.96  Knuth-Bendix, ordered hyper_res, factoring, and unit
% 1.75/1.96  deletion, with positive clauses in sos and nonpositive
% 1.75/1.96  clauses in usable.
% 1.75/1.96  
% 1.75/1.96     dependent: set(knuth_bendix).
% 1.75/1.96     dependent: set(anl_eq).
% 1.75/1.96     dependent: set(para_from).
% 1.75/1.96     dependent: set(para_into).
% 1.75/1.96     dependent: clear(para_from_right).
% 1.75/1.96     dependent: clear(para_into_right).
% 1.75/1.96     dependent: set(para_from_vars).
% 1.75/1.96     dependent: set(eq_units_both_ways).
% 1.75/1.96     dependent: set(dynamic_demod_all).
% 1.75/1.96     dependent: set(dynamic_demod).
% 1.75/1.96     dependent: set(order_eq).
% 1.75/1.96     dependent: set(back_demod).
% 1.75/1.96     dependent: set(lrpo).
% 1.75/1.96     dependent: set(hyper_res).
% 1.75/1.96     dependent: set(unit_deletion).
% 1.75/1.96     dependent: set(factor).
% 1.75/1.96  
% 1.75/1.96  ------------> process usable:
% 1.75/1.96  ** KEPT (pick-wt=16): 1 [] -c_in(c_Event_Oevent_OSays(A,B,C),c_List_Oset(D,tc_Event_Oevent),tc_Event_Oevent)|c_in(C,c_Message_Oanalz(c_Event_Oknows(c_Message_Oagent_OSpy,D)),tc_Message_Omsg).
% 1.75/1.96  ** KEPT (pick-wt=12): 2 [] -c_in(c_Message_Omsg_OMPair(A,B),c_Message_Oparts(C),tc_Message_Omsg)|c_in(B,c_Message_Oparts(C),tc_Message_Omsg).
% 1.75/1.96  ** KEPT (pick-wt=12): 3 [] -c_in(c_Message_Omsg_OMPair(A,B),c_Message_Oparts(C),tc_Message_Omsg)|c_in(A,c_Message_Oparts(C),tc_Message_Omsg).
% 1.91/2.08  ** KEPT (pick-wt=9): 4 [] -c_in(A,B,tc_Message_Omsg)|c_in(A,c_Message_Oparts(B),tc_Message_Omsg).
% 1.91/2.08  ** KEPT (pick-wt=13): 5 [] -c_in(A,c_Message_Oparts(B),tc_Message_Omsg)|c_Message_Oparts(c_insert(A,B,tc_Message_Omsg))=c_Message_Oparts(B).
% 1.91/2.08  ** KEPT (pick-wt=25): 6 [] -c_in(A,c_OtwayRees_Ootway,tc_List_Olist(tc_Event_Oevent))| -c_in(c_Event_Oevent_OGets(B,C),c_List_Oset(A,tc_Event_Oevent),tc_Event_Oevent)|c_in(c_Event_Oevent_OSays(v_sko__usf(B,C,A),B,C),c_List_Oset(A,tc_Event_Oevent),tc_Event_Oevent).
% 1.91/2.08  ** KEPT (pick-wt=12): 7 [] -c_in(A,c_Event_Obad,tc_Message_Oagent)|c_in(c_Message_Omsg_OKey(c_Public_OshrK(A)),c_Event_Oknows(c_Message_Oagent_OSpy,B),tc_Message_Omsg).
% 1.91/2.08  ** KEPT (pick-wt=11): 8 [] -c_in(A,B,C)|c_in(A,c_insert(D,B,C),C).
% 1.91/2.08  ** KEPT (pick-wt=13): 9 [] c_in(v_A,c_Event_Obad,tc_Message_Oagent)| -c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4)),tc_Message_Omsg).
% 1.91/2.08  ** KEPT (pick-wt=16): 10 [] -c_in(v_A,c_Event_Obad,tc_Message_Oagent)| -c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_insert(v_X,c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4),tc_Message_Omsg)),tc_Message_Omsg).
% 1.91/2.08  
% 1.91/2.08  ------------> process sos:
% 1.91/2.08  ** KEPT (pick-wt=3): 11 [] A=A.
% 1.91/2.08  ** KEPT (pick-wt=6): 12 [] c_Message_Oparts(c_Message_Oanalz(A))=c_Message_Oparts(A).
% 1.91/2.08  ---> New Demodulator: 13 [new_demod,12] c_Message_Oparts(c_Message_Oanalz(A))=c_Message_Oparts(A).
% 1.91/2.08  ** KEPT (pick-wt=5): 14 [] c_in(v_evs4,c_OtwayRees_Ootway,tc_List_Olist(tc_Event_Oevent)).
% 1.91/2.08  ** KEPT (pick-wt=20): 15 [] c_in(c_Event_Oevent_OGets(v_B,c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NA),c_Message_Omsg_OMPair(v_X,c_Message_Omsg_OCrypt(c_Public_OshrK(v_B),c_Message_Omsg_OMPair(c_Message_Omsg_ONonce(v_NB),c_Message_Omsg_OKey(v_K)))))),c_List_Oset(v_evs4,tc_Event_Oevent),tc_Event_Oevent).
% 1.91/2.08  ** KEPT (pick-wt=16): 16 [] c_in(c_Message_Omsg_OKey(c_Public_OshrK(v_A)),c_Message_Oparts(c_insert(v_X,c_Event_Oknows(c_Message_Oagent_OSpy,v_evs4),tc_Message_Omsg)),tc_Message_Omsg)|c_in(v_A,c_Event_Obad,tc_Message_Oagent).
% 1.91/2.08    Following clause subsumed by 11 during input processing: 0 [copy,11,flip.1] A=A.
% 1.91/2.08  >>>> Starting back demodulation with 13.
% 1.91/2.08  
% 1.91/2.08  ======= end of input processing =======
% 1.91/2.08  
% 1.91/2.08  =========== start of search ===========
% 1.91/2.08  
% 1.91/2.08  
% 1.91/2.08  Resetting weight limit to 21.
% 1.91/2.08  
% 1.91/2.08  
% 1.91/2.08  Resetting weight limit to 21.
% 1.91/2.08  
% 1.91/2.08  sos_size=456
% 1.91/2.08  
% 1.91/2.08  
% 1.91/2.08  Resetting weight limit to 18.
% 1.91/2.08  
% 1.91/2.08  
% 1.91/2.08  Resetting weight limit to 18.
% 1.91/2.08  
% 1.91/2.08  sos_size=498
% 1.91/2.08  
% 1.91/2.08  -------- PROOF -------- 
% 1.91/2.08  
% 1.91/2.08  ----> UNIT CONFLICT at   0.12 sec ----> 689 [binary,688.1,665.1] $F.
% 1.91/2.08  
% 1.91/2.08  Length of proof is 12.  Level of proof is 8.
% 1.91/2.08  
% 1.91/2.08  ---------------- PROOF ----------------
% 1.91/2.08  % SZS status Unsatisfiable
% 1.91/2.08  % SZS output start Refutation
% See solution above
% 1.91/2.08  ------------ end of proof -------------
% 1.91/2.08  
% 1.91/2.08  
% 1.91/2.08  Search stopped by max_proofs option.
% 1.91/2.08  
% 1.91/2.08  
% 1.91/2.08  Search stopped by max_proofs option.
% 1.91/2.08  
% 1.91/2.08  ============ end of search ============
% 1.91/2.08  
% 1.91/2.08  -------------- statistics -------------
% 1.91/2.08  clauses given                 89
% 1.91/2.08  clauses generated           1728
% 1.91/2.08  clauses kept                 643
% 1.91/2.08  clauses forward subsumed     204
% 1.91/2.08  clauses back subsumed          7
% 1.91/2.08  Kbytes malloced             5859
% 1.91/2.08  
% 1.91/2.08  ----------- times (seconds) -----------
% 1.91/2.08  user CPU time          0.12          (0 hr, 0 min, 0 sec)
% 1.91/2.08  system CPU time        0.00          (0 hr, 0 min, 0 sec)
% 1.91/2.08  wall-clock time        2             (0 hr, 0 min, 2 sec)
% 1.91/2.08  
% 1.91/2.08  That finishes the proof of the theorem.
% 1.91/2.08  
% 1.91/2.08  Process 23266 finished Wed Jul 27 05:54:22 2022
% 1.91/2.08  Otter interrupted
% 1.91/2.08  PROOF FOUND
%------------------------------------------------------------------------------