TSTP Solution File: NUM410+1 by Otter---3.3

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Otter---3.3
% Problem  : NUM410+1 : TPTP v8.1.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : otter-tptp-script %s

% Computer : n028.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 13:08:15 EDT 2022

% Result   : Theorem 1.94s 2.17s
% Output   : Refutation 1.94s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    3
%            Number of leaves      :    7
% Syntax   : Number of clauses     :   10 (   8 unt;   0 nHn;   9 RR)
%            Number of literals    :   17 (   0 equ;   8 neg)
%            Maximal clause size   :    5 (   1 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of predicates  :    7 (   6 usr;   1 prp; 0-2 aty)
%            Number of functors    :    3 (   3 usr;   1 con; 0-1 aty)
%            Number of variables   :    4 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(12,axiom,
    ( ~ relation(A)
    | ~ function(A)
    | transfinite_se_quence(A)
    | ~ ordinal(relation_dom(A)) ),
    file('NUM410+1.p',unknown),
    [] ).

cnf(14,axiom,
    ( ~ relation(A)
    | ~ function(A)
    | ~ transfinite_se_quence(A)
    | transfinite_se_quence_of(A,B)
    | ~ subset(relation_rng(A),B) ),
    file('NUM410+1.p',unknown),
    [] ).

cnf(32,axiom,
    ~ transfinite_se_quence_of(dollar_c15,relation_rng(dollar_c15)),
    file('NUM410+1.p',unknown),
    [] ).

cnf(87,axiom,
    subset(A,A),
    file('NUM410+1.p',unknown),
    [] ).

cnf(88,axiom,
    relation(dollar_c15),
    file('NUM410+1.p',unknown),
    [] ).

cnf(89,axiom,
    function(dollar_c15),
    file('NUM410+1.p',unknown),
    [] ).

cnf(90,axiom,
    ordinal(relation_dom(dollar_c15)),
    file('NUM410+1.p',unknown),
    [] ).

cnf(133,plain,
    transfinite_se_quence(dollar_c15),
    inference(hyper,[status(thm)],[90,12,88,89]),
    [iquote('hyper,90,12,88,89')] ).

cnf(137,plain,
    transfinite_se_quence_of(dollar_c15,relation_rng(dollar_c15)),
    inference(hyper,[status(thm)],[133,14,88,89,87]),
    [iquote('hyper,133,14,88,89,87')] ).

cnf(138,plain,
    $false,
    inference(binary,[status(thm)],[137,32]),
    [iquote('binary,137.1,32.1')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.11  % Problem  : NUM410+1 : TPTP v8.1.0. Released v3.2.0.
% 0.11/0.12  % Command  : otter-tptp-script %s
% 0.12/0.33  % Computer : n028.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 09:45:19 EDT 2022
% 0.17/0.33  % CPUTime  : 
% 1.94/2.16  ----- Otter 3.3f, August 2004 -----
% 1.94/2.16  The process was started by sandbox on n028.cluster.edu,
% 1.94/2.16  Wed Jul 27 09:45:19 2022
% 1.94/2.16  The command was "./otter".  The process ID is 21270.
% 1.94/2.16  
% 1.94/2.16  set(prolog_style_variables).
% 1.94/2.16  set(auto).
% 1.94/2.16     dependent: set(auto1).
% 1.94/2.16     dependent: set(process_input).
% 1.94/2.16     dependent: clear(print_kept).
% 1.94/2.16     dependent: clear(print_new_demod).
% 1.94/2.16     dependent: clear(print_back_demod).
% 1.94/2.16     dependent: clear(print_back_sub).
% 1.94/2.16     dependent: set(control_memory).
% 1.94/2.16     dependent: assign(max_mem, 12000).
% 1.94/2.16     dependent: assign(pick_given_ratio, 4).
% 1.94/2.16     dependent: assign(stats_level, 1).
% 1.94/2.16     dependent: assign(max_seconds, 10800).
% 1.94/2.16  clear(print_given).
% 1.94/2.16  
% 1.94/2.16  formula_list(usable).
% 1.94/2.16  all A (A=A).
% 1.94/2.16  all A B (in(A,B)-> -in(B,A)).
% 1.94/2.16  all A (empty(A)->function(A)).
% 1.94/2.16  all A (ordinal(A)->epsilon_transitive(A)&epsilon_connected(A)).
% 1.94/2.16  all A (empty(A)->relation(A)).
% 1.94/2.16  all A (relation(A)&empty(A)&function(A)->relation(A)&function(A)&one_to_one(A)).
% 1.94/2.16  all A (epsilon_transitive(A)&epsilon_connected(A)->ordinal(A)).
% 1.94/2.16  all A (empty(A)->epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)).
% 1.94/2.16  all A (relation(A)&function(A)-> (transfinite_se_quence(A)<->ordinal(relation_dom(A)))).
% 1.94/2.16  all A B (relation(B)&function(B)&transfinite_se_quence(B)-> (transfinite_se_quence_of(B,A)<->subset(relation_rng(B),A))).
% 1.94/2.16  all A B (transfinite_se_quence_of(B,A)->relation(B)&function(B)&transfinite_se_quence(B)).
% 1.94/2.16  all A exists B transfinite_se_quence_of(B,A).
% 1.94/2.16  all A exists B element(B,A).
% 1.94/2.16  empty(empty_set).
% 1.94/2.16  relation(empty_set).
% 1.94/2.16  relation_empty_yielding(empty_set).
% 1.94/2.16  empty(empty_set).
% 1.94/2.16  relation(empty_set).
% 1.94/2.16  relation_empty_yielding(empty_set).
% 1.94/2.16  function(empty_set).
% 1.94/2.16  one_to_one(empty_set).
% 1.94/2.16  empty(empty_set).
% 1.94/2.16  epsilon_transitive(empty_set).
% 1.94/2.16  epsilon_connected(empty_set).
% 1.94/2.16  ordinal(empty_set).
% 1.94/2.16  empty(empty_set).
% 1.94/2.16  relation(empty_set).
% 1.94/2.16  all A (-empty(A)&relation(A)-> -empty(relation_dom(A))).
% 1.94/2.16  all A (relation(A)&relation_non_empty(A)&function(A)->with_non_empty_elements(relation_rng(A))).
% 1.94/2.16  all A (-empty(A)&relation(A)-> -empty(relation_rng(A))).
% 1.94/2.16  all A (empty(A)->empty(relation_dom(A))&relation(relation_dom(A))).
% 1.94/2.16  all A (empty(A)->empty(relation_rng(A))&relation(relation_rng(A))).
% 1.94/2.16  exists A (relation(A)&function(A)).
% 1.94/2.16  exists A (epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)).
% 1.94/2.16  exists A (empty(A)&relation(A)).
% 1.94/2.16  exists A empty(A).
% 1.94/2.16  exists A (relation(A)&empty(A)&function(A)).
% 1.94/2.16  exists A (relation(A)&function(A)&one_to_one(A)&empty(A)&epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)).
% 1.94/2.16  exists A (-empty(A)&relation(A)).
% 1.94/2.16  exists A (-empty(A)).
% 1.94/2.16  exists A (relation(A)&function(A)&one_to_one(A)).
% 1.94/2.16  exists A (-empty(A)&epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)).
% 1.94/2.16  exists A (relation(A)&relation_empty_yielding(A)).
% 1.94/2.16  exists A (relation(A)&relation_empty_yielding(A)&function(A)).
% 1.94/2.16  exists A (relation(A)&function(A)&transfinite_se_quence(A)).
% 1.94/2.16  exists A (relation(A)&relation_non_empty(A)&function(A)).
% 1.94/2.16  all A B subset(A,A).
% 1.94/2.16  all A B (in(A,B)->element(A,B)).
% 1.94/2.16  all A B (element(A,B)->empty(B)|in(A,B)).
% 1.94/2.16  all A B (element(A,powerset(B))<->subset(A,B)).
% 1.94/2.16  -(all A (relation(A)&function(A)-> (ordinal(relation_dom(A))->transfinite_se_quence_of(A,relation_rng(A))))).
% 1.94/2.16  all A B C (in(A,B)&element(B,powerset(C))->element(A,C)).
% 1.94/2.16  all A B C (-(in(A,B)&element(B,powerset(C))&empty(C))).
% 1.94/2.16  all A (empty(A)->A=empty_set).
% 1.94/2.16  all A B (-(in(A,B)&empty(B))).
% 1.94/2.16  all A B (-(empty(A)&A!=B&empty(B))).
% 1.94/2.16  end_of_list.
% 1.94/2.16  
% 1.94/2.16  -------> usable clausifies to:
% 1.94/2.16  
% 1.94/2.16  list(usable).
% 1.94/2.16  0 [] A=A.
% 1.94/2.16  0 [] -in(A,B)| -in(B,A).
% 1.94/2.16  0 [] -empty(A)|function(A).
% 1.94/2.16  0 [] -ordinal(A)|epsilon_transitive(A).
% 1.94/2.16  0 [] -ordinal(A)|epsilon_connected(A).
% 1.94/2.16  0 [] -empty(A)|relation(A).
% 1.94/2.16  0 [] -relation(A)| -empty(A)| -function(A)|one_to_one(A).
% 1.94/2.16  0 [] -epsilon_transitive(A)| -epsilon_connected(A)|ordinal(A).
% 1.94/2.16  0 [] -empty(A)|epsilon_transitive(A).
% 1.94/2.16  0 [] -empty(A)|epsilon_connected(A).
% 1.94/2.16  0 [] -empty(A)|ordinal(A).
% 1.94/2.16  0 [] -relation(A)| -function(A)| -transfinite_se_quence(A)|ordinal(relation_dom(A)).
% 1.94/2.16  0 [] -relation(A)| -function(A)|transfinite_se_quence(A)| -ordinal(relation_dom(A)).
% 1.94/2.16  0 [] -relation(B)| -function(B)| -transfinite_se_quence(B)| -transfinite_se_quence_of(B,A)|subset(relation_rng(B),A).
% 1.94/2.16  0 [] -relation(B)| -function(B)| -transfinite_se_quence(B)|transfinite_se_quence_of(B,A)| -subset(relation_rng(B),A).
% 1.94/2.16  0 [] -transfinite_se_quence_of(B,A)|relation(B).
% 1.94/2.16  0 [] -transfinite_se_quence_of(B,A)|function(B).
% 1.94/2.16  0 [] -transfinite_se_quence_of(B,A)|transfinite_se_quence(B).
% 1.94/2.16  0 [] transfinite_se_quence_of($f1(A),A).
% 1.94/2.16  0 [] element($f2(A),A).
% 1.94/2.16  0 [] empty(empty_set).
% 1.94/2.16  0 [] relation(empty_set).
% 1.94/2.16  0 [] relation_empty_yielding(empty_set).
% 1.94/2.16  0 [] empty(empty_set).
% 1.94/2.16  0 [] relation(empty_set).
% 1.94/2.16  0 [] relation_empty_yielding(empty_set).
% 1.94/2.16  0 [] function(empty_set).
% 1.94/2.16  0 [] one_to_one(empty_set).
% 1.94/2.16  0 [] empty(empty_set).
% 1.94/2.16  0 [] epsilon_transitive(empty_set).
% 1.94/2.16  0 [] epsilon_connected(empty_set).
% 1.94/2.16  0 [] ordinal(empty_set).
% 1.94/2.16  0 [] empty(empty_set).
% 1.94/2.16  0 [] relation(empty_set).
% 1.94/2.16  0 [] empty(A)| -relation(A)| -empty(relation_dom(A)).
% 1.94/2.16  0 [] -relation(A)| -relation_non_empty(A)| -function(A)|with_non_empty_elements(relation_rng(A)).
% 1.94/2.16  0 [] empty(A)| -relation(A)| -empty(relation_rng(A)).
% 1.94/2.16  0 [] -empty(A)|empty(relation_dom(A)).
% 1.94/2.16  0 [] -empty(A)|relation(relation_dom(A)).
% 1.94/2.16  0 [] -empty(A)|empty(relation_rng(A)).
% 1.94/2.16  0 [] -empty(A)|relation(relation_rng(A)).
% 1.94/2.16  0 [] relation($c1).
% 1.94/2.16  0 [] function($c1).
% 1.94/2.16  0 [] epsilon_transitive($c2).
% 1.94/2.16  0 [] epsilon_connected($c2).
% 1.94/2.16  0 [] ordinal($c2).
% 1.94/2.16  0 [] empty($c3).
% 1.94/2.16  0 [] relation($c3).
% 1.94/2.16  0 [] empty($c4).
% 1.94/2.16  0 [] relation($c5).
% 1.94/2.16  0 [] empty($c5).
% 1.94/2.16  0 [] function($c5).
% 1.94/2.16  0 [] relation($c6).
% 1.94/2.16  0 [] function($c6).
% 1.94/2.16  0 [] one_to_one($c6).
% 1.94/2.16  0 [] empty($c6).
% 1.94/2.16  0 [] epsilon_transitive($c6).
% 1.94/2.16  0 [] epsilon_connected($c6).
% 1.94/2.16  0 [] ordinal($c6).
% 1.94/2.16  0 [] -empty($c7).
% 1.94/2.16  0 [] relation($c7).
% 1.94/2.16  0 [] -empty($c8).
% 1.94/2.16  0 [] relation($c9).
% 1.94/2.16  0 [] function($c9).
% 1.94/2.16  0 [] one_to_one($c9).
% 1.94/2.16  0 [] -empty($c10).
% 1.94/2.16  0 [] epsilon_transitive($c10).
% 1.94/2.16  0 [] epsilon_connected($c10).
% 1.94/2.16  0 [] ordinal($c10).
% 1.94/2.16  0 [] relation($c11).
% 1.94/2.16  0 [] relation_empty_yielding($c11).
% 1.94/2.16  0 [] relation($c12).
% 1.94/2.16  0 [] relation_empty_yielding($c12).
% 1.94/2.16  0 [] function($c12).
% 1.94/2.16  0 [] relation($c13).
% 1.94/2.16  0 [] function($c13).
% 1.94/2.16  0 [] transfinite_se_quence($c13).
% 1.94/2.16  0 [] relation($c14).
% 1.94/2.16  0 [] relation_non_empty($c14).
% 1.94/2.16  0 [] function($c14).
% 1.94/2.16  0 [] subset(A,A).
% 1.94/2.16  0 [] -in(A,B)|element(A,B).
% 1.94/2.16  0 [] -element(A,B)|empty(B)|in(A,B).
% 1.94/2.16  0 [] -element(A,powerset(B))|subset(A,B).
% 1.94/2.16  0 [] element(A,powerset(B))| -subset(A,B).
% 1.94/2.16  0 [] relation($c15).
% 1.94/2.16  0 [] function($c15).
% 1.94/2.16  0 [] ordinal(relation_dom($c15)).
% 1.94/2.16  0 [] -transfinite_se_quence_of($c15,relation_rng($c15)).
% 1.94/2.16  0 [] -in(A,B)| -element(B,powerset(C))|element(A,C).
% 1.94/2.16  0 [] -in(A,B)| -element(B,powerset(C))| -empty(C).
% 1.94/2.16  0 [] -empty(A)|A=empty_set.
% 1.94/2.16  0 [] -in(A,B)| -empty(B).
% 1.94/2.16  0 [] -empty(A)|A=B| -empty(B).
% 1.94/2.16  end_of_list.
% 1.94/2.16  
% 1.94/2.16  SCAN INPUT: prop=0, horn=0, equality=1, symmetry=0, max_lits=5.
% 1.94/2.16  
% 1.94/2.16  This ia a non-Horn set with equality.  The strategy will be
% 1.94/2.16  Knuth-Bendix, ordered hyper_res, factoring, and unit
% 1.94/2.16  deletion, with positive clauses in sos and nonpositive
% 1.94/2.16  clauses in usable.
% 1.94/2.16  
% 1.94/2.16     dependent: set(knuth_bendix).
% 1.94/2.16     dependent: set(anl_eq).
% 1.94/2.16     dependent: set(para_from).
% 1.94/2.16     dependent: set(para_into).
% 1.94/2.16     dependent: clear(para_from_right).
% 1.94/2.16     dependent: clear(para_into_right).
% 1.94/2.16     dependent: set(para_from_vars).
% 1.94/2.16     dependent: set(eq_units_both_ways).
% 1.94/2.16     dependent: set(dynamic_demod_all).
% 1.94/2.16     dependent: set(dynamic_demod).
% 1.94/2.16     dependent: set(order_eq).
% 1.94/2.16     dependent: set(back_demod).
% 1.94/2.17     dependent: set(lrpo).
% 1.94/2.17     dependent: set(hyper_res).
% 1.94/2.17     dependent: set(unit_deletion).
% 1.94/2.17     dependent: set(factor).
% 1.94/2.17  
% 1.94/2.17  ------------> process usable:
% 1.94/2.17  ** KEPT (pick-wt=6): 1 [] -in(A,B)| -in(B,A).
% 1.94/2.17  ** KEPT (pick-wt=4): 2 [] -empty(A)|function(A).
% 1.94/2.17  ** KEPT (pick-wt=4): 3 [] -ordinal(A)|epsilon_transitive(A).
% 1.94/2.17  ** KEPT (pick-wt=4): 4 [] -ordinal(A)|epsilon_connected(A).
% 1.94/2.17  ** KEPT (pick-wt=4): 5 [] -empty(A)|relation(A).
% 1.94/2.17  ** KEPT (pick-wt=8): 6 [] -relation(A)| -empty(A)| -function(A)|one_to_one(A).
% 1.94/2.17  ** KEPT (pick-wt=6): 7 [] -epsilon_transitive(A)| -epsilon_connected(A)|ordinal(A).
% 1.94/2.17  ** KEPT (pick-wt=4): 8 [] -empty(A)|epsilon_transitive(A).
% 1.94/2.17  ** KEPT (pick-wt=4): 9 [] -empty(A)|epsilon_connected(A).
% 1.94/2.17  ** KEPT (pick-wt=4): 10 [] -empty(A)|ordinal(A).
% 1.94/2.17  ** KEPT (pick-wt=9): 11 [] -relation(A)| -function(A)| -transfinite_se_quence(A)|ordinal(relation_dom(A)).
% 1.94/2.17  ** KEPT (pick-wt=9): 12 [] -relation(A)| -function(A)|transfinite_se_quence(A)| -ordinal(relation_dom(A)).
% 1.94/2.17  ** KEPT (pick-wt=13): 13 [] -relation(A)| -function(A)| -transfinite_se_quence(A)| -transfinite_se_quence_of(A,B)|subset(relation_rng(A),B).
% 1.94/2.17  ** KEPT (pick-wt=13): 14 [] -relation(A)| -function(A)| -transfinite_se_quence(A)|transfinite_se_quence_of(A,B)| -subset(relation_rng(A),B).
% 1.94/2.17  ** KEPT (pick-wt=5): 15 [] -transfinite_se_quence_of(A,B)|relation(A).
% 1.94/2.17  ** KEPT (pick-wt=5): 16 [] -transfinite_se_quence_of(A,B)|function(A).
% 1.94/2.17  ** KEPT (pick-wt=5): 17 [] -transfinite_se_quence_of(A,B)|transfinite_se_quence(A).
% 1.94/2.17  ** KEPT (pick-wt=7): 18 [] empty(A)| -relation(A)| -empty(relation_dom(A)).
% 1.94/2.17  ** KEPT (pick-wt=9): 19 [] -relation(A)| -relation_non_empty(A)| -function(A)|with_non_empty_elements(relation_rng(A)).
% 1.94/2.17  ** KEPT (pick-wt=7): 20 [] empty(A)| -relation(A)| -empty(relation_rng(A)).
% 1.94/2.17  ** KEPT (pick-wt=5): 21 [] -empty(A)|empty(relation_dom(A)).
% 1.94/2.17  ** KEPT (pick-wt=5): 22 [] -empty(A)|relation(relation_dom(A)).
% 1.94/2.17  ** KEPT (pick-wt=5): 23 [] -empty(A)|empty(relation_rng(A)).
% 1.94/2.17  ** KEPT (pick-wt=5): 24 [] -empty(A)|relation(relation_rng(A)).
% 1.94/2.17  ** KEPT (pick-wt=2): 25 [] -empty($c7).
% 1.94/2.17  ** KEPT (pick-wt=2): 26 [] -empty($c8).
% 1.94/2.17  ** KEPT (pick-wt=2): 27 [] -empty($c10).
% 1.94/2.17  ** KEPT (pick-wt=6): 28 [] -in(A,B)|element(A,B).
% 1.94/2.17  ** KEPT (pick-wt=8): 29 [] -element(A,B)|empty(B)|in(A,B).
% 1.94/2.17  ** KEPT (pick-wt=7): 30 [] -element(A,powerset(B))|subset(A,B).
% 1.94/2.17  ** KEPT (pick-wt=7): 31 [] element(A,powerset(B))| -subset(A,B).
% 1.94/2.17  ** KEPT (pick-wt=4): 32 [] -transfinite_se_quence_of($c15,relation_rng($c15)).
% 1.94/2.17  ** KEPT (pick-wt=10): 33 [] -in(A,B)| -element(B,powerset(C))|element(A,C).
% 1.94/2.17  ** KEPT (pick-wt=9): 34 [] -in(A,B)| -element(B,powerset(C))| -empty(C).
% 1.94/2.17  ** KEPT (pick-wt=5): 35 [] -empty(A)|A=empty_set.
% 1.94/2.17  ** KEPT (pick-wt=5): 36 [] -in(A,B)| -empty(B).
% 1.94/2.17  ** KEPT (pick-wt=7): 37 [] -empty(A)|A=B| -empty(B).
% 1.94/2.17  
% 1.94/2.17  ------------> process sos:
% 1.94/2.17  ** KEPT (pick-wt=3): 40 [] A=A.
% 1.94/2.17  ** KEPT (pick-wt=4): 41 [] transfinite_se_quence_of($f1(A),A).
% 1.94/2.17  ** KEPT (pick-wt=4): 42 [] element($f2(A),A).
% 1.94/2.17  ** KEPT (pick-wt=2): 43 [] empty(empty_set).
% 1.94/2.17  ** KEPT (pick-wt=2): 44 [] relation(empty_set).
% 1.94/2.17  ** KEPT (pick-wt=2): 45 [] relation_empty_yielding(empty_set).
% 1.94/2.17    Following clause subsumed by 43 during input processing: 0 [] empty(empty_set).
% 1.94/2.17    Following clause subsumed by 44 during input processing: 0 [] relation(empty_set).
% 1.94/2.17    Following clause subsumed by 45 during input processing: 0 [] relation_empty_yielding(empty_set).
% 1.94/2.17  ** KEPT (pick-wt=2): 46 [] function(empty_set).
% 1.94/2.17  ** KEPT (pick-wt=2): 47 [] one_to_one(empty_set).
% 1.94/2.17    Following clause subsumed by 43 during input processing: 0 [] empty(empty_set).
% 1.94/2.17  ** KEPT (pick-wt=2): 48 [] epsilon_transitive(empty_set).
% 1.94/2.17  ** KEPT (pick-wt=2): 49 [] epsilon_connected(empty_set).
% 1.94/2.17  ** KEPT (pick-wt=2): 50 [] ordinal(empty_set).
% 1.94/2.17    Following clause subsumed by 43 during input processing: 0 [] empty(empty_set).
% 1.94/2.17    Following clause subsumed by 44 during input processing: 0 [] relation(empty_set).
% 1.94/2.17  ** KEPT (pick-wt=2): 51 [] relation($c1).
% 1.94/2.17  ** KEPT (pick-wt=2): 52 [] function($c1).
% 1.94/2.17  ** KEPT (pick-wt=2): 53 [] epsilon_transitive($c2).
% 1.94/2.17  ** KEPT (pick-wt=2): 54 [] epsilon_connected($c2).
% 1.94/2.17  ** KEPT (pick-wt=2): 55 [] ordinal($c2).
% 1.94/2.17  ** KEPT (pick-wt=2): 56 [] empty($c3).
% 1.94/2.17  ** KEPT (pick-wt=2): 57 [] relation($c3).
% 1.94/2.17  ** KEPT (pick-wt=2): 58 [] empty($c4).
% 1.94/2.17  ** KEPT (pick-wt=2): 59 [] relation($c5).
% 1.94/2.17  ** KEPT (pick-wt=2): 60 [] empty($c5).
% 1.94/2.17  ** KEPT (pick-wt=2): 61 [] function($c5).
% 1.94/2.17  ** KEPT (pick-wt=2): 62 [] relation($c6).
% 1.94/2.17  ** KEPT (pick-wt=2): 63 [] function($c6).
% 1.94/2.17  ** KEPT (pick-wt=2): 64 [] one_to_one($c6).
% 1.94/2.17  ** KEPT (pick-wt=2): 65 [] empty($c6).
% 1.94/2.17  ** KEPT (pick-wt=2): 66 [] epsilon_transitive($c6).
% 1.94/2.17  ** KEPT (pick-wt=2): 67 [] epsilon_connected($c6).
% 1.94/2.17  ** KEPT (pick-wt=2): 68 [] ordinal($c6).
% 1.94/2.17  ** KEPT (pick-wt=2): 69 [] relation($c7).
% 1.94/2.17  ** KEPT (pick-wt=2): 70 [] relation($c9).
% 1.94/2.17  ** KEPT (pick-wt=2): 71 [] function($c9).
% 1.94/2.17  ** KEPT (pick-wt=2): 72 [] one_to_one($c9).
% 1.94/2.17  ** KEPT (pick-wt=2): 73 [] epsilon_transitive($c10).
% 1.94/2.17  ** KEPT (pick-wt=2): 74 [] epsilon_connected($c10).
% 1.94/2.17  ** KEPT (pick-wt=2): 75 [] ordinal($c10).
% 1.94/2.17  ** KEPT (pick-wt=2): 76 [] relation($c11).
% 1.94/2.17  ** KEPT (pick-wt=2): 77 [] relation_empty_yielding($c11).
% 1.94/2.17  ** KEPT (pick-wt=2): 78 [] relation($c12).
% 1.94/2.17  ** KEPT (pick-wt=2): 79 [] relation_empty_yielding($c12).
% 1.94/2.17  ** KEPT (pick-wt=2): 80 [] function($c12).
% 1.94/2.17  ** KEPT (pick-wt=2): 81 [] relation($c13).
% 1.94/2.17  ** KEPT (pick-wt=2): 82 [] function($c13).
% 1.94/2.17  ** KEPT (pick-wt=2): 83 [] transfinite_se_quence($c13).
% 1.94/2.17  ** KEPT (pick-wt=2): 84 [] relation($c14).
% 1.94/2.17  ** KEPT (pick-wt=2): 85 [] relation_non_empty($c14).
% 1.94/2.17  ** KEPT (pick-wt=2): 86 [] function($c14).
% 1.94/2.17  ** KEPT (pick-wt=3): 87 [] subset(A,A).
% 1.94/2.17  ** KEPT (pick-wt=2): 88 [] relation($c15).
% 1.94/2.17  ** KEPT (pick-wt=2): 89 [] function($c15).
% 1.94/2.17  ** KEPT (pick-wt=3): 90 [] ordinal(relation_dom($c15)).
% 1.94/2.17    Following clause subsumed by 40 during input processing: 0 [copy,40,flip.1] A=A.
% 1.94/2.17  40 back subsumes 39.
% 1.94/2.17  
% 1.94/2.17  ======= end of input processing =======
% 1.94/2.17  
% 1.94/2.17  =========== start of search ===========
% 1.94/2.17  
% 1.94/2.17  -------- PROOF -------- 
% 1.94/2.17  
% 1.94/2.17  ----> UNIT CONFLICT at   0.00 sec ----> 138 [binary,137.1,32.1] $F.
% 1.94/2.17  
% 1.94/2.17  Length of proof is 2.  Level of proof is 2.
% 1.94/2.17  
% 1.94/2.17  ---------------- PROOF ----------------
% 1.94/2.17  % SZS status Theorem
% 1.94/2.17  % SZS output start Refutation
% See solution above
% 1.94/2.17  ------------ end of proof -------------
% 1.94/2.17  
% 1.94/2.17  
% 1.94/2.17  Search stopped by max_proofs option.
% 1.94/2.17  
% 1.94/2.17  
% 1.94/2.17  Search stopped by max_proofs option.
% 1.94/2.17  
% 1.94/2.17  ============ end of search ============
% 1.94/2.17  
% 1.94/2.17  -------------- statistics -------------
% 1.94/2.17  clauses given                 54
% 1.94/2.17  clauses generated            162
% 1.94/2.17  clauses kept                 133
% 1.94/2.17  clauses forward subsumed     148
% 1.94/2.17  clauses back subsumed          2
% 1.94/2.17  Kbytes malloced              976
% 1.94/2.17  
% 1.94/2.17  ----------- times (seconds) -----------
% 1.94/2.17  user CPU time          0.00          (0 hr, 0 min, 0 sec)
% 1.94/2.17  system CPU time        0.00          (0 hr, 0 min, 0 sec)
% 1.94/2.17  wall-clock time        1             (0 hr, 0 min, 1 sec)
% 1.94/2.17  
% 1.94/2.17  That finishes the proof of the theorem.
% 1.94/2.17  
% 1.94/2.17  Process 21270 finished Wed Jul 27 09:45:20 2022
% 1.94/2.17  Otter interrupted
% 1.94/2.17  PROOF FOUND
%------------------------------------------------------------------------------