TSTP Solution File: SEU089+1 by Otter---3.3

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Otter---3.3
% Problem  : SEU089+1 : TPTP v8.1.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : otter-tptp-script %s

% Computer : n010.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 13:14:45 EDT 2022

% Result   : Theorem 1.99s 2.23s
% Output   : Refutation 1.99s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    4
%            Number of leaves      :    6
% Syntax   : Number of clauses     :   11 (   9 unt;   0 nHn;   9 RR)
%            Number of literals    :   15 (   2 equ;   5 neg)
%            Maximal clause size   :    3 (   1 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :    3 (   1 usr;   1 prp; 0-2 aty)
%            Number of functors    :    5 (   5 usr;   3 con; 0-3 aty)
%            Number of variables   :   11 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(19,axiom,
    ( ~ finite(A)
    | ~ finite(B)
    | finite(cartesian_product2(A,B)) ),
    file('SEU089+1.p',unknown),
    [] ).

cnf(33,axiom,
    ~ finite(cartesian_product3(dollar_c24,dollar_c23,dollar_c22)),
    file('SEU089+1.p',unknown),
    [] ).

cnf(51,axiom,
    cartesian_product3(A,B,C) = cartesian_product2(cartesian_product2(A,B),C),
    file('SEU089+1.p',unknown),
    [] ).

cnf(52,plain,
    cartesian_product2(cartesian_product2(A,B),C) = cartesian_product3(A,B,C),
    inference(flip,[status(thm),theory(equality)],[inference(copy,[status(thm)],[51])]),
    [iquote('copy,51,flip.1')] ).

cnf(141,axiom,
    finite(dollar_c24),
    file('SEU089+1.p',unknown),
    [] ).

cnf(142,axiom,
    finite(dollar_c23),
    file('SEU089+1.p',unknown),
    [] ).

cnf(143,axiom,
    finite(dollar_c22),
    file('SEU089+1.p',unknown),
    [] ).

cnf(153,plain,
    ( ~ finite(cartesian_product2(A,B))
    | ~ finite(C)
    | finite(cartesian_product3(A,B,C)) ),
    inference(para_from,[status(thm),theory(equality)],[52,19]),
    [iquote('para_from,52.1.1,19.3.1')] ).

cnf(326,plain,
    finite(cartesian_product2(dollar_c24,dollar_c23)),
    inference(hyper,[status(thm)],[142,19,141]),
    [iquote('hyper,142,19,141')] ).

cnf(667,plain,
    finite(cartesian_product3(dollar_c24,dollar_c23,dollar_c22)),
    inference(hyper,[status(thm)],[326,153,143]),
    [iquote('hyper,326,153,143')] ).

cnf(668,plain,
    $false,
    inference(binary,[status(thm)],[667,33]),
    [iquote('binary,667.1,33.1')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.11  % Problem  : SEU089+1 : TPTP v8.1.0. Released v3.2.0.
% 0.03/0.12  % Command  : otter-tptp-script %s
% 0.12/0.32  % Computer : n010.cluster.edu
% 0.12/0.32  % Model    : x86_64 x86_64
% 0.12/0.32  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.32  % Memory   : 8042.1875MB
% 0.12/0.32  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.32  % CPULimit : 300
% 0.12/0.32  % WCLimit  : 300
% 0.12/0.32  % DateTime : Wed Jul 27 07:30:24 EDT 2022
% 0.12/0.33  % CPUTime  : 
% 1.99/2.21  ----- Otter 3.3f, August 2004 -----
% 1.99/2.21  The process was started by sandbox on n010.cluster.edu,
% 1.99/2.21  Wed Jul 27 07:30:24 2022
% 1.99/2.21  The command was "./otter".  The process ID is 31842.
% 1.99/2.21  
% 1.99/2.21  set(prolog_style_variables).
% 1.99/2.21  set(auto).
% 1.99/2.21     dependent: set(auto1).
% 1.99/2.21     dependent: set(process_input).
% 1.99/2.21     dependent: clear(print_kept).
% 1.99/2.21     dependent: clear(print_new_demod).
% 1.99/2.21     dependent: clear(print_back_demod).
% 1.99/2.21     dependent: clear(print_back_sub).
% 1.99/2.21     dependent: set(control_memory).
% 1.99/2.21     dependent: assign(max_mem, 12000).
% 1.99/2.21     dependent: assign(pick_given_ratio, 4).
% 1.99/2.21     dependent: assign(stats_level, 1).
% 1.99/2.21     dependent: assign(max_seconds, 10800).
% 1.99/2.21  clear(print_given).
% 1.99/2.21  
% 1.99/2.21  formula_list(usable).
% 1.99/2.21  all A (A=A).
% 1.99/2.21  all A B (in(A,B)-> -in(B,A)).
% 1.99/2.21  all A (ordinal(A)-> (all B (element(B,A)->epsilon_transitive(B)&epsilon_connected(B)&ordinal(B)))).
% 1.99/2.21  all A (empty(A)->finite(A)).
% 1.99/2.21  all A (empty(A)->function(A)).
% 1.99/2.21  all A (ordinal(A)->epsilon_transitive(A)&epsilon_connected(A)).
% 1.99/2.21  all A (empty(A)->relation(A)).
% 1.99/2.21  all A B C (element(C,powerset(cartesian_product2(A,B)))->relation(C)).
% 1.99/2.21  all A (empty(A)&ordinal(A)->epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)&natural(A)).
% 1.99/2.21  all A (finite(A)-> (all B (element(B,powerset(A))->finite(B)))).
% 1.99/2.21  all A (relation(A)&empty(A)&function(A)->relation(A)&function(A)&one_to_one(A)).
% 1.99/2.21  all A (epsilon_transitive(A)&epsilon_connected(A)->ordinal(A)).
% 1.99/2.21  all A (empty(A)->epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)).
% 1.99/2.21  all A (element(A,positive_rationals)-> (ordinal(A)->epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)&natural(A))).
% 1.99/2.21  all A B C (cartesian_product3(A,B,C)=cartesian_product2(cartesian_product2(A,B),C)).
% 1.99/2.21  all A exists B element(B,A).
% 1.99/2.21  empty(empty_set).
% 1.99/2.21  relation(empty_set).
% 1.99/2.21  relation_empty_yielding(empty_set).
% 1.99/2.21  all A B (finite(A)&finite(B)->finite(cartesian_product2(A,B))).
% 1.99/2.21  all A (-empty(powerset(A))).
% 1.99/2.21  empty(empty_set).
% 1.99/2.21  relation(empty_set).
% 1.99/2.21  relation_empty_yielding(empty_set).
% 1.99/2.21  function(empty_set).
% 1.99/2.21  one_to_one(empty_set).
% 1.99/2.21  empty(empty_set).
% 1.99/2.21  epsilon_transitive(empty_set).
% 1.99/2.21  epsilon_connected(empty_set).
% 1.99/2.21  ordinal(empty_set).
% 1.99/2.21  empty(empty_set).
% 1.99/2.21  relation(empty_set).
% 1.99/2.21  all A B (-empty(A)& -empty(B)-> -empty(cartesian_product2(A,B))).
% 1.99/2.21  all A B C (-empty(A)& -empty(B)& -empty(C)-> -empty(cartesian_product3(A,B,C))).
% 1.99/2.21  -empty(positive_rationals).
% 1.99/2.21  exists A (-empty(A)&epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)&natural(A)).
% 1.99/2.21  exists A (-empty(A)&finite(A)).
% 1.99/2.21  exists A (relation(A)&function(A)&function_yielding(A)).
% 1.99/2.21  exists A (relation(A)&function(A)).
% 1.99/2.21  exists A (epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)).
% 1.99/2.21  exists A (epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)&being_limit_ordinal(A)).
% 1.99/2.21  exists A (empty(A)&relation(A)).
% 1.99/2.21  all A (-empty(A)-> (exists B (element(B,powerset(A))& -empty(B)))).
% 1.99/2.21  exists A empty(A).
% 1.99/2.21  exists A (element(A,positive_rationals)& -empty(A)&epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)).
% 1.99/2.21  all A exists B (element(B,powerset(A))&empty(B)&relation(B)&function(B)&one_to_one(B)&epsilon_transitive(B)&epsilon_connected(B)&ordinal(B)&natural(B)&finite(B)).
% 1.99/2.21  exists A (relation(A)&empty(A)&function(A)).
% 1.99/2.21  exists A (relation(A)&function(A)&one_to_one(A)&empty(A)&epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)).
% 1.99/2.21  exists A (relation(A)&function(A)&transfinite_se_quence(A)&ordinal_yielding(A)).
% 1.99/2.21  exists A (-empty(A)&relation(A)).
% 1.99/2.21  all A exists B (element(B,powerset(A))&empty(B)).
% 1.99/2.21  exists A (-empty(A)).
% 1.99/2.21  exists A (element(A,positive_rationals)&empty(A)&epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)&natural(A)).
% 1.99/2.21  all A (-empty(A)-> (exists B (element(B,powerset(A))& -empty(B)&finite(B)))).
% 1.99/2.21  exists A (relation(A)&function(A)&one_to_one(A)).
% 1.99/2.21  exists A (-empty(A)&epsilon_transitive(A)&epsilon_connected(A)&ordinal(A)).
% 1.99/2.21  exists A (relation(A)&relation_empty_yielding(A)).
% 1.99/2.21  exists A (relation(A)&relation_empty_yielding(A)&function(A)).
% 1.99/2.21  exists A (relation(A)&function(A)&transfinite_se_quence(A)).
% 1.99/2.21  exists A (relation(A)&relation_non_empty(A)&function(A)).
% 1.99/2.21  all A B subset(A,A).
% 1.99/2.21  all A B (finite(A)&finite(B)->finite(cartesian_product2(A,B))).
% 1.99/2.21  all A B (in(A,B)->element(A,B)).
% 1.99/2.21  -(all A B C (finite(A)&finite(B)&finite(C)->finite(cartesian_product3(A,B,C)))).
% 1.99/2.21  all A B (element(A,B)->empty(B)|in(A,B)).
% 1.99/2.21  all A B (element(A,powerset(B))<->subset(A,B)).
% 1.99/2.21  all A B C (in(A,B)&element(B,powerset(C))->element(A,C)).
% 1.99/2.21  all A B C (-(in(A,B)&element(B,powerset(C))&empty(C))).
% 1.99/2.21  all A (empty(A)->A=empty_set).
% 1.99/2.21  all A B (-(in(A,B)&empty(B))).
% 1.99/2.21  all A B (-(empty(A)&A!=B&empty(B))).
% 1.99/2.21  end_of_list.
% 1.99/2.21  
% 1.99/2.21  -------> usable clausifies to:
% 1.99/2.21  
% 1.99/2.21  list(usable).
% 1.99/2.21  0 [] A=A.
% 1.99/2.21  0 [] -in(A,B)| -in(B,A).
% 1.99/2.21  0 [] -ordinal(A)| -element(B,A)|epsilon_transitive(B).
% 1.99/2.21  0 [] -ordinal(A)| -element(B,A)|epsilon_connected(B).
% 1.99/2.21  0 [] -ordinal(A)| -element(B,A)|ordinal(B).
% 1.99/2.21  0 [] -empty(A)|finite(A).
% 1.99/2.21  0 [] -empty(A)|function(A).
% 1.99/2.21  0 [] -ordinal(A)|epsilon_transitive(A).
% 1.99/2.21  0 [] -ordinal(A)|epsilon_connected(A).
% 1.99/2.21  0 [] -empty(A)|relation(A).
% 1.99/2.21  0 [] -element(C,powerset(cartesian_product2(A,B)))|relation(C).
% 1.99/2.21  0 [] -empty(A)| -ordinal(A)|epsilon_transitive(A).
% 1.99/2.21  0 [] -empty(A)| -ordinal(A)|epsilon_connected(A).
% 1.99/2.21  0 [] -empty(A)| -ordinal(A)|natural(A).
% 1.99/2.21  0 [] -finite(A)| -element(B,powerset(A))|finite(B).
% 1.99/2.21  0 [] -relation(A)| -empty(A)| -function(A)|one_to_one(A).
% 1.99/2.21  0 [] -epsilon_transitive(A)| -epsilon_connected(A)|ordinal(A).
% 1.99/2.21  0 [] -empty(A)|epsilon_transitive(A).
% 1.99/2.21  0 [] -empty(A)|epsilon_connected(A).
% 1.99/2.21  0 [] -empty(A)|ordinal(A).
% 1.99/2.21  0 [] -element(A,positive_rationals)| -ordinal(A)|epsilon_transitive(A).
% 1.99/2.21  0 [] -element(A,positive_rationals)| -ordinal(A)|epsilon_connected(A).
% 1.99/2.21  0 [] -element(A,positive_rationals)| -ordinal(A)|natural(A).
% 1.99/2.21  0 [] cartesian_product3(A,B,C)=cartesian_product2(cartesian_product2(A,B),C).
% 1.99/2.21  0 [] element($f1(A),A).
% 1.99/2.21  0 [] empty(empty_set).
% 1.99/2.21  0 [] relation(empty_set).
% 1.99/2.21  0 [] relation_empty_yielding(empty_set).
% 1.99/2.21  0 [] -finite(A)| -finite(B)|finite(cartesian_product2(A,B)).
% 1.99/2.21  0 [] -empty(powerset(A)).
% 1.99/2.21  0 [] empty(empty_set).
% 1.99/2.21  0 [] relation(empty_set).
% 1.99/2.21  0 [] relation_empty_yielding(empty_set).
% 1.99/2.21  0 [] function(empty_set).
% 1.99/2.21  0 [] one_to_one(empty_set).
% 1.99/2.21  0 [] empty(empty_set).
% 1.99/2.21  0 [] epsilon_transitive(empty_set).
% 1.99/2.21  0 [] epsilon_connected(empty_set).
% 1.99/2.21  0 [] ordinal(empty_set).
% 1.99/2.21  0 [] empty(empty_set).
% 1.99/2.21  0 [] relation(empty_set).
% 1.99/2.21  0 [] empty(A)|empty(B)| -empty(cartesian_product2(A,B)).
% 1.99/2.21  0 [] empty(A)|empty(B)|empty(C)| -empty(cartesian_product3(A,B,C)).
% 1.99/2.21  0 [] -empty(positive_rationals).
% 1.99/2.21  0 [] -empty($c1).
% 1.99/2.21  0 [] epsilon_transitive($c1).
% 1.99/2.21  0 [] epsilon_connected($c1).
% 1.99/2.21  0 [] ordinal($c1).
% 1.99/2.21  0 [] natural($c1).
% 1.99/2.21  0 [] -empty($c2).
% 1.99/2.21  0 [] finite($c2).
% 1.99/2.21  0 [] relation($c3).
% 1.99/2.21  0 [] function($c3).
% 1.99/2.21  0 [] function_yielding($c3).
% 1.99/2.21  0 [] relation($c4).
% 1.99/2.21  0 [] function($c4).
% 1.99/2.21  0 [] epsilon_transitive($c5).
% 1.99/2.21  0 [] epsilon_connected($c5).
% 1.99/2.21  0 [] ordinal($c5).
% 1.99/2.21  0 [] epsilon_transitive($c6).
% 1.99/2.21  0 [] epsilon_connected($c6).
% 1.99/2.21  0 [] ordinal($c6).
% 1.99/2.21  0 [] being_limit_ordinal($c6).
% 1.99/2.21  0 [] empty($c7).
% 1.99/2.21  0 [] relation($c7).
% 1.99/2.21  0 [] empty(A)|element($f2(A),powerset(A)).
% 1.99/2.21  0 [] empty(A)| -empty($f2(A)).
% 1.99/2.21  0 [] empty($c8).
% 1.99/2.21  0 [] element($c9,positive_rationals).
% 1.99/2.21  0 [] -empty($c9).
% 1.99/2.21  0 [] epsilon_transitive($c9).
% 1.99/2.21  0 [] epsilon_connected($c9).
% 1.99/2.21  0 [] ordinal($c9).
% 1.99/2.21  0 [] element($f3(A),powerset(A)).
% 1.99/2.21  0 [] empty($f3(A)).
% 1.99/2.21  0 [] relation($f3(A)).
% 1.99/2.21  0 [] function($f3(A)).
% 1.99/2.21  0 [] one_to_one($f3(A)).
% 1.99/2.21  0 [] epsilon_transitive($f3(A)).
% 1.99/2.21  0 [] epsilon_connected($f3(A)).
% 1.99/2.21  0 [] ordinal($f3(A)).
% 1.99/2.21  0 [] natural($f3(A)).
% 1.99/2.21  0 [] finite($f3(A)).
% 1.99/2.21  0 [] relation($c10).
% 1.99/2.21  0 [] empty($c10).
% 1.99/2.21  0 [] function($c10).
% 1.99/2.21  0 [] relation($c11).
% 1.99/2.21  0 [] function($c11).
% 1.99/2.21  0 [] one_to_one($c11).
% 1.99/2.21  0 [] empty($c11).
% 1.99/2.21  0 [] epsilon_transitive($c11).
% 1.99/2.21  0 [] epsilon_connected($c11).
% 1.99/2.21  0 [] ordinal($c11).
% 1.99/2.21  0 [] relation($c12).
% 1.99/2.21  0 [] function($c12).
% 1.99/2.21  0 [] transfinite_se_quence($c12).
% 1.99/2.21  0 [] ordinal_yielding($c12).
% 1.99/2.21  0 [] -empty($c13).
% 1.99/2.21  0 [] relation($c13).
% 1.99/2.21  0 [] element($f4(A),powerset(A)).
% 1.99/2.21  0 [] empty($f4(A)).
% 1.99/2.21  0 [] -empty($c14).
% 1.99/2.21  0 [] element($c15,positive_rationals).
% 1.99/2.21  0 [] empty($c15).
% 1.99/2.21  0 [] epsilon_transitive($c15).
% 1.99/2.21  0 [] epsilon_connected($c15).
% 1.99/2.21  0 [] ordinal($c15).
% 1.99/2.21  0 [] natural($c15).
% 1.99/2.21  0 [] empty(A)|element($f5(A),powerset(A)).
% 1.99/2.21  0 [] empty(A)| -empty($f5(A)).
% 1.99/2.21  0 [] empty(A)|finite($f5(A)).
% 1.99/2.21  0 [] relation($c16).
% 1.99/2.21  0 [] function($c16).
% 1.99/2.21  0 [] one_to_one($c16).
% 1.99/2.21  0 [] -empty($c17).
% 1.99/2.21  0 [] epsilon_transitive($c17).
% 1.99/2.21  0 [] epsilon_connected($c17).
% 1.99/2.21  0 [] ordinal($c17).
% 1.99/2.21  0 [] relation($c18).
% 1.99/2.21  0 [] relation_empty_yielding($c18).
% 1.99/2.21  0 [] relation($c19).
% 1.99/2.21  0 [] relation_empty_yielding($c19).
% 1.99/2.21  0 [] function($c19).
% 1.99/2.21  0 [] relation($c20).
% 1.99/2.21  0 [] function($c20).
% 1.99/2.21  0 [] transfinite_se_quence($c20).
% 1.99/2.21  0 [] relation($c21).
% 1.99/2.21  0 [] relation_non_empty($c21).
% 1.99/2.21  0 [] function($c21).
% 1.99/2.21  0 [] subset(A,A).
% 1.99/2.21  0 [] -finite(A)| -finite(B)|finite(cartesian_product2(A,B)).
% 1.99/2.21  0 [] -in(A,B)|element(A,B).
% 1.99/2.21  0 [] finite($c24).
% 1.99/2.21  0 [] finite($c23).
% 1.99/2.21  0 [] finite($c22).
% 1.99/2.21  0 [] -finite(cartesian_product3($c24,$c23,$c22)).
% 1.99/2.21  0 [] -element(A,B)|empty(B)|in(A,B).
% 1.99/2.21  0 [] -element(A,powerset(B))|subset(A,B).
% 1.99/2.21  0 [] element(A,powerset(B))| -subset(A,B).
% 1.99/2.21  0 [] -in(A,B)| -element(B,powerset(C))|element(A,C).
% 1.99/2.21  0 [] -in(A,B)| -element(B,powerset(C))| -empty(C).
% 1.99/2.21  0 [] -empty(A)|A=empty_set.
% 1.99/2.21  0 [] -in(A,B)| -empty(B).
% 1.99/2.21  0 [] -empty(A)|A=B| -empty(B).
% 1.99/2.21  end_of_list.
% 1.99/2.21  
% 1.99/2.21  SCAN INPUT: prop=0, horn=0, equality=1, symmetry=0, max_lits=4.
% 1.99/2.21  
% 1.99/2.21  This ia a non-Horn set with equality.  The strategy will be
% 1.99/2.21  Knuth-Bendix, ordered hyper_res, factoring, and unit
% 1.99/2.21  deletion, with positive clauses in sos and nonpositive
% 1.99/2.21  clauses in usable.
% 1.99/2.21  
% 1.99/2.21     dependent: set(knuth_bendix).
% 1.99/2.21     dependent: set(anl_eq).
% 1.99/2.21     dependent: set(para_from).
% 1.99/2.21     dependent: set(para_into).
% 1.99/2.21     dependent: clear(para_from_right).
% 1.99/2.21     dependent: clear(para_into_right).
% 1.99/2.21     dependent: set(para_from_vars).
% 1.99/2.21     dependent: set(eq_units_both_ways).
% 1.99/2.21     dependent: set(dynamic_demod_all).
% 1.99/2.21     dependent: set(dynamic_demod).
% 1.99/2.21     dependent: set(order_eq).
% 1.99/2.21     dependent: set(back_demod).
% 1.99/2.21     dependent: set(lrpo).
% 1.99/2.21     dependent: set(hyper_res).
% 1.99/2.21     dependent: set(unit_deletion).
% 1.99/2.21     dependent: set(factor).
% 1.99/2.21  
% 1.99/2.21  ------------> process usable:
% 1.99/2.21  ** KEPT (pick-wt=6): 1 [] -in(A,B)| -in(B,A).
% 1.99/2.21  ** KEPT (pick-wt=7): 2 [] -ordinal(A)| -element(B,A)|epsilon_transitive(B).
% 1.99/2.21  ** KEPT (pick-wt=7): 3 [] -ordinal(A)| -element(B,A)|epsilon_connected(B).
% 1.99/2.21  ** KEPT (pick-wt=7): 4 [] -ordinal(A)| -element(B,A)|ordinal(B).
% 1.99/2.21  ** KEPT (pick-wt=4): 5 [] -empty(A)|finite(A).
% 1.99/2.21  ** KEPT (pick-wt=4): 6 [] -empty(A)|function(A).
% 1.99/2.21  ** KEPT (pick-wt=4): 7 [] -ordinal(A)|epsilon_transitive(A).
% 1.99/2.21  ** KEPT (pick-wt=4): 8 [] -ordinal(A)|epsilon_connected(A).
% 1.99/2.21  ** KEPT (pick-wt=4): 9 [] -empty(A)|relation(A).
% 1.99/2.21  ** KEPT (pick-wt=8): 10 [] -element(A,powerset(cartesian_product2(B,C)))|relation(A).
% 1.99/2.21    Following clause subsumed by 7 during input processing: 0 [] -empty(A)| -ordinal(A)|epsilon_transitive(A).
% 1.99/2.21    Following clause subsumed by 8 during input processing: 0 [] -empty(A)| -ordinal(A)|epsilon_connected(A).
% 1.99/2.21  ** KEPT (pick-wt=6): 11 [] -empty(A)| -ordinal(A)|natural(A).
% 1.99/2.21  ** KEPT (pick-wt=8): 12 [] -finite(A)| -element(B,powerset(A))|finite(B).
% 1.99/2.21  ** KEPT (pick-wt=8): 13 [] -relation(A)| -empty(A)| -function(A)|one_to_one(A).
% 1.99/2.21  ** KEPT (pick-wt=6): 14 [] -epsilon_transitive(A)| -epsilon_connected(A)|ordinal(A).
% 1.99/2.21  ** KEPT (pick-wt=4): 15 [] -empty(A)|epsilon_transitive(A).
% 1.99/2.21  ** KEPT (pick-wt=4): 16 [] -empty(A)|epsilon_connected(A).
% 1.99/2.21  ** KEPT (pick-wt=4): 17 [] -empty(A)|ordinal(A).
% 1.99/2.21    Following clause subsumed by 7 during input processing: 0 [] -element(A,positive_rationals)| -ordinal(A)|epsilon_transitive(A).
% 1.99/2.21    Following clause subsumed by 8 during input processing: 0 [] -element(A,positive_rationals)| -ordinal(A)|epsilon_connected(A).
% 1.99/2.21  ** KEPT (pick-wt=7): 18 [] -element(A,positive_rationals)| -ordinal(A)|natural(A).
% 1.99/2.21  ** KEPT (pick-wt=8): 19 [] -finite(A)| -finite(B)|finite(cartesian_product2(A,B)).
% 1.99/2.21  ** KEPT (pick-wt=3): 20 [] -empty(powerset(A)).
% 1.99/2.21  ** KEPT (pick-wt=8): 21 [] empty(A)|empty(B)| -empty(cartesian_product2(A,B)).
% 1.99/2.21  ** KEPT (pick-wt=11): 22 [] empty(A)|empty(B)|empty(C)| -empty(cartesian_product3(A,B,C)).
% 1.99/2.21  ** KEPT (pick-wt=2): 23 [] -empty(positive_rationals).
% 1.99/2.21  ** KEPT (pick-wt=2): 24 [] -empty($c1).
% 1.99/2.21  ** KEPT (pick-wt=2): 25 [] -empty($c2).
% 1.99/2.21  ** KEPT (pick-wt=5): 26 [] empty(A)| -empty($f2(A)).
% 1.99/2.21  ** KEPT (pick-wt=2): 27 [] -empty($c9).
% 1.99/2.21  ** KEPT (pick-wt=2): 28 [] -empty($c13).
% 1.99/2.21  ** KEPT (pick-wt=2): 29 [] -empty($c14).
% 1.99/2.21  ** KEPT (pick-wt=5): 30 [] empty(A)| -empty($f5(A)).
% 1.99/2.21  ** KEPT (pick-wt=2): 31 [] -empty($c17).
% 1.99/2.21    Following clause subsumed by 19 during input processing: 0 [] -finite(A)| -finite(B)|finite(cartesian_product2(A,B)).
% 1.99/2.21  ** KEPT (pick-wt=6): 32 [] -in(A,B)|element(A,B).
% 1.99/2.21  ** KEPT (pick-wt=5): 33 [] -finite(cartesian_product3($c24,$c23,$c22)).
% 1.99/2.21  ** KEPT (pick-wt=8): 34 [] -element(A,B)|empty(B)|in(A,B).
% 1.99/2.21  ** KEPT (pick-wt=7): 35 [] -element(A,powerset(B))|subset(A,B).
% 1.99/2.21  ** KEPT (pick-wt=7): 36 [] element(A,powerset(B))| -subset(A,B).
% 1.99/2.21  ** KEPT (pick-wt=10): 37 [] -in(A,B)| -element(B,powerset(C))|element(A,C).
% 1.99/2.21  ** KEPT (pick-wt=9): 38 [] -in(A,B)| -element(B,powerset(C))| -empty(C).
% 1.99/2.21  ** KEPT (pick-wt=5): 39 [] -empty(A)|A=empty_set.
% 1.99/2.21  ** KEPT (pick-wt=5): 40 [] -in(A,B)| -empty(B).
% 1.99/2.21  ** KEPT (pick-wt=7): 41 [] -empty(A)|A=B| -empty(B).
% 1.99/2.21  
% 1.99/2.21  ------------> process sos:
% 1.99/2.21  ** KEPT (pick-wt=3): 50 [] A=A.
% 1.99/2.21  ** KEPT (pick-wt=10): 52 [copy,51,flip.1] cartesian_product2(cartesian_product2(A,B),C)=cartesian_product3(A,B,C).
% 1.99/2.21  ---> New Demodulator: 53 [new_demod,52] cartesian_product2(cartesian_product2(A,B),C)=cartesian_product3(A,B,C).
% 1.99/2.21  ** KEPT (pick-wt=4): 54 [] element($f1(A),A).
% 1.99/2.21  ** KEPT (pick-wt=2): 55 [] empty(empty_set).
% 1.99/2.21  ** KEPT (pick-wt=2): 56 [] relation(empty_set).
% 1.99/2.21  ** KEPT (pick-wt=2): 57 [] relation_empty_yielding(empty_set).
% 1.99/2.21    Following clause subsumed by 55 during input processing: 0 [] empty(empty_set).
% 1.99/2.21    Following clause subsumed by 56 during input processing: 0 [] relation(empty_set).
% 1.99/2.21    Following clause subsumed by 57 during input processing: 0 [] relation_empty_yielding(empty_set).
% 1.99/2.21  ** KEPT (pick-wt=2): 58 [] function(empty_set).
% 1.99/2.21  ** KEPT (pick-wt=2): 59 [] one_to_one(empty_set).
% 1.99/2.21    Following clause subsumed by 55 during input processing: 0 [] empty(empty_set).
% 1.99/2.21  ** KEPT (pick-wt=2): 60 [] epsilon_transitive(empty_set).
% 1.99/2.21  ** KEPT (pick-wt=2): 61 [] epsilon_connected(empty_set).
% 1.99/2.21  ** KEPT (pick-wt=2): 62 [] ordinal(empty_set).
% 1.99/2.21    Following clause subsumed by 55 during input processing: 0 [] empty(empty_set).
% 1.99/2.21    Following clause subsumed by 56 during input processing: 0 [] relation(empty_set).
% 1.99/2.21  ** KEPT (pick-wt=2): 63 [] epsilon_transitive($c1).
% 1.99/2.21  ** KEPT (pick-wt=2): 64 [] epsilon_connected($c1).
% 1.99/2.21  ** KEPT (pick-wt=2): 65 [] ordinal($c1).
% 1.99/2.21  ** KEPT (pick-wt=2): 66 [] natural($c1).
% 1.99/2.21  ** KEPT (pick-wt=2): 67 [] finite($c2).
% 1.99/2.21  ** KEPT (pick-wt=2): 68 [] relation($c3).
% 1.99/2.21  ** KEPT (pick-wt=2): 69 [] function($c3).
% 1.99/2.21  ** KEPT (pick-wt=2): 70 [] function_yielding($c3).
% 1.99/2.21  ** KEPT (pick-wt=2): 71 [] relation($c4).
% 1.99/2.21  ** KEPT (pick-wt=2): 72 [] function($c4).
% 1.99/2.21  ** KEPT (pick-wt=2): 73 [] epsilon_transitive($c5).
% 1.99/2.21  ** KEPT (pick-wt=2): 74 [] epsilon_connected($c5).
% 1.99/2.21  ** KEPT (pick-wt=2): 75 [] ordinal($c5).
% 1.99/2.21  ** KEPT (pick-wt=2): 76 [] epsilon_transitive($c6).
% 1.99/2.21  ** KEPT (pick-wt=2): 77 [] epsilon_connected($c6).
% 1.99/2.21  ** KEPT (pick-wt=2): 78 [] ordinal($c6).
% 1.99/2.21  ** KEPT (pick-wt=2): 79 [] being_limit_ordinal($c6).
% 1.99/2.21  ** KEPT (pick-wt=2): 80 [] empty($c7).
% 1.99/2.21  ** KEPT (pick-wt=2): 81 [] relation($c7).
% 1.99/2.21  ** KEPT (pick-wt=7): 82 [] empty(A)|element($f2(A),powerset(A)).
% 1.99/2.21  ** KEPT (pick-wt=2): 83 [] empty($c8).
% 1.99/2.21  ** KEPT (pick-wt=3): 84 [] element($c9,positive_rationals).
% 1.99/2.21  ** KEPT (pick-wt=2): 85 [] epsilon_transitive($c9).
% 1.99/2.21  ** KEPT (pick-wt=2): 86 [] epsilon_connected($c9).
% 1.99/2.21  ** KEPT (pick-wt=2): 87 [] ordinal($c9).
% 1.99/2.21  ** KEPT (pick-wt=5): 88 [] element($f3(A),powerset(A)).
% 1.99/2.21  ** KEPT (pick-wt=3): 89 [] empty($f3(A)).
% 1.99/2.21  ** KEPT (pick-wt=3): 90 [] relation($f3(A)).
% 1.99/2.21  ** KEPT (pick-wt=3): 91 [] function($f3(A)).
% 1.99/2.21  ** KEPT (pick-wt=3): 92 [] one_to_one($f3(A)).
% 1.99/2.21  ** KEPT (pick-wt=3): 93 [] epsilon_transitive($f3(A)).
% 1.99/2.21  ** KEPT (pick-wt=3): 94 [] epsilon_connected($f3(A)).
% 1.99/2.21  ** KEPT (pick-wt=3): 95 [] ordinal($f3(A)).
% 1.99/2.21  ** KEPT (pick-wt=3): 96 [] natural($f3(A)).
% 1.99/2.21  ** KEPT (pick-wt=3): 97 [] finite($f3(A)).
% 1.99/2.21  ** KEPT (pick-wt=2): 98 [] relation($c10).
% 1.99/2.21  ** KEPT (pick-wt=2): 99 [] empty($c10).
% 1.99/2.21  ** KEPT (pick-wt=2): 100 [] function($c10).
% 1.99/2.21  ** KEPT (pick-wt=2): 101 [] relation($c11).
% 1.99/2.21  ** KEPT (pick-wt=2): 102 [] function($c11).
% 1.99/2.21  ** KEPT (pick-wt=2): 103 [] one_to_one($c11).
% 1.99/2.21  ** KEPT (pick-wt=2): 104 [] empty($c11).
% 1.99/2.21  ** KEPT (pick-wt=2): 105 [] epsilon_transitive($c11).
% 1.99/2.21  ** KEPT (pick-wt=2): 106 [] epsilon_connected($c11).
% 1.99/2.21  ** KEPT (pick-wt=2): 107 [] ordinal($c11).
% 1.99/2.21  ** KEPT (pick-wt=2): 108 [] relation($c12).
% 1.99/2.21  ** KEPT (pick-wt=2): 109 [] function($c12).
% 1.99/2.21  ** KEPT (pick-wt=2): 110 [] transfinite_se_quence($c12).
% 1.99/2.21  ** KEPT (pick-wt=2): 111 [] ordinal_yielding($c12).
% 1.99/2.21  ** KEPT (pick-wt=2): 112 [] relation($c13).
% 1.99/2.21  ** KEPT (pick-wt=5): 113 [] element($f4(A),powerset(A)).
% 1.99/2.23  ** KEPT (pick-wt=3): 114 [] empty($f4(A)).
% 1.99/2.23  ** KEPT (pick-wt=3): 115 [] element($c15,positive_rationals).
% 1.99/2.23  ** KEPT (pick-wt=2): 116 [] empty($c15).
% 1.99/2.23  ** KEPT (pick-wt=2): 117 [] epsilon_transitive($c15).
% 1.99/2.23  ** KEPT (pick-wt=2): 118 [] epsilon_connected($c15).
% 1.99/2.23  ** KEPT (pick-wt=2): 119 [] ordinal($c15).
% 1.99/2.23  ** KEPT (pick-wt=2): 120 [] natural($c15).
% 1.99/2.23  ** KEPT (pick-wt=7): 121 [] empty(A)|element($f5(A),powerset(A)).
% 1.99/2.23  ** KEPT (pick-wt=5): 122 [] empty(A)|finite($f5(A)).
% 1.99/2.23  ** KEPT (pick-wt=2): 123 [] relation($c16).
% 1.99/2.23  ** KEPT (pick-wt=2): 124 [] function($c16).
% 1.99/2.23  ** KEPT (pick-wt=2): 125 [] one_to_one($c16).
% 1.99/2.23  ** KEPT (pick-wt=2): 126 [] epsilon_transitive($c17).
% 1.99/2.23  ** KEPT (pick-wt=2): 127 [] epsilon_connected($c17).
% 1.99/2.23  ** KEPT (pick-wt=2): 128 [] ordinal($c17).
% 1.99/2.23  ** KEPT (pick-wt=2): 129 [] relation($c18).
% 1.99/2.23  ** KEPT (pick-wt=2): 130 [] relation_empty_yielding($c18).
% 1.99/2.23  ** KEPT (pick-wt=2): 131 [] relation($c19).
% 1.99/2.23  ** KEPT (pick-wt=2): 132 [] relation_empty_yielding($c19).
% 1.99/2.23  ** KEPT (pick-wt=2): 133 [] function($c19).
% 1.99/2.23  ** KEPT (pick-wt=2): 134 [] relation($c20).
% 1.99/2.23  ** KEPT (pick-wt=2): 135 [] function($c20).
% 1.99/2.23  ** KEPT (pick-wt=2): 136 [] transfinite_se_quence($c20).
% 1.99/2.23  ** KEPT (pick-wt=2): 137 [] relation($c21).
% 1.99/2.23  ** KEPT (pick-wt=2): 138 [] relation_non_empty($c21).
% 1.99/2.23  ** KEPT (pick-wt=2): 139 [] function($c21).
% 1.99/2.23  ** KEPT (pick-wt=3): 140 [] subset(A,A).
% 1.99/2.23  ** KEPT (pick-wt=2): 141 [] finite($c24).
% 1.99/2.23  ** KEPT (pick-wt=2): 142 [] finite($c23).
% 1.99/2.23  ** KEPT (pick-wt=2): 143 [] finite($c22).
% 1.99/2.23    Following clause subsumed by 50 during input processing: 0 [copy,50,flip.1] A=A.
% 1.99/2.23  50 back subsumes 48.
% 1.99/2.23  >>>> Starting back demodulation with 53.
% 1.99/2.23  
% 1.99/2.23  ======= end of input processing =======
% 1.99/2.23  
% 1.99/2.23  =========== start of search ===========
% 1.99/2.23  
% 1.99/2.23  -------- PROOF -------- 
% 1.99/2.23  
% 1.99/2.23  ----> UNIT CONFLICT at   0.02 sec ----> 668 [binary,667.1,33.1] $F.
% 1.99/2.23  
% 1.99/2.23  Length of proof is 4.  Level of proof is 3.
% 1.99/2.23  
% 1.99/2.23  ---------------- PROOF ----------------
% 1.99/2.23  % SZS status Theorem
% 1.99/2.23  % SZS output start Refutation
% See solution above
% 1.99/2.23  ------------ end of proof -------------
% 1.99/2.23  
% 1.99/2.23  
% 1.99/2.23  Search stopped by max_proofs option.
% 1.99/2.23  
% 1.99/2.23  
% 1.99/2.23  Search stopped by max_proofs option.
% 1.99/2.23  
% 1.99/2.23  ============ end of search ============
% 1.99/2.23  
% 1.99/2.23  -------------- statistics -------------
% 1.99/2.23  clauses given                138
% 1.99/2.23  clauses generated           1067
% 1.99/2.23  clauses kept                 655
% 1.99/2.23  clauses forward subsumed     624
% 1.99/2.23  clauses back subsumed         11
% 1.99/2.23  Kbytes malloced             2929
% 1.99/2.23  
% 1.99/2.23  ----------- times (seconds) -----------
% 1.99/2.23  user CPU time          0.02          (0 hr, 0 min, 0 sec)
% 1.99/2.23  system CPU time        0.00          (0 hr, 0 min, 0 sec)
% 1.99/2.23  wall-clock time        2             (0 hr, 0 min, 2 sec)
% 1.99/2.23  
% 1.99/2.23  That finishes the proof of the theorem.
% 1.99/2.23  
% 1.99/2.23  Process 31842 finished Wed Jul 27 07:30:26 2022
% 1.99/2.23  Otter interrupted
% 1.99/2.23  PROOF FOUND
%------------------------------------------------------------------------------