TSTP Solution File: LAT238-1 by Prover9---1109a

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Prover9---1109a
% Problem  : LAT238-1 : TPTP v8.1.0. Released v3.1.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : tptp2X_and_run_prover9 %d %s

% Computer : n021.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  : 600s
% DateTime : Sun Jul 17 06:26:19 EDT 2022

% Result   : Unsatisfiable 10.92s 11.23s
% Output   : Refutation 10.92s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.12/0.12  % Problem  : LAT238-1 : TPTP v8.1.0. Released v3.1.0.
% 0.12/0.13  % Command  : tptp2X_and_run_prover9 %d %s
% 0.12/0.33  % Computer : n021.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  : 600
% 0.12/0.33  % DateTime : Thu Jun 30 16:25:58 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 10.92/11.23  ============================== Prover9 ===============================
% 10.92/11.23  Prover9 (32) version 2009-11A, November 2009.
% 10.92/11.23  Process 25343 was started by sandbox on n021.cluster.edu,
% 10.92/11.23  Thu Jun 30 16:25:59 2022
% 10.92/11.23  The command was "/export/starexec/sandbox/solver/bin/prover9 -t 300 -f /tmp/Prover9_25177_n021.cluster.edu".
% 10.92/11.23  ============================== end of head ===========================
% 10.92/11.23  
% 10.92/11.23  ============================== INPUT =================================
% 10.92/11.23  
% 10.92/11.23  % Reading from file /tmp/Prover9_25177_n021.cluster.edu
% 10.92/11.23  
% 10.92/11.23  set(prolog_style_variables).
% 10.92/11.23  set(auto2).
% 10.92/11.23      % set(auto2) -> set(auto).
% 10.92/11.23      % set(auto) -> set(auto_inference).
% 10.92/11.23      % set(auto) -> set(auto_setup).
% 10.92/11.23      % set(auto_setup) -> set(predicate_elim).
% 10.92/11.23      % set(auto_setup) -> assign(eq_defs, unfold).
% 10.92/11.23      % set(auto) -> set(auto_limits).
% 10.92/11.23      % set(auto_limits) -> assign(max_weight, "100.000").
% 10.92/11.23      % set(auto_limits) -> assign(sos_limit, 20000).
% 10.92/11.23      % set(auto) -> set(auto_denials).
% 10.92/11.23      % set(auto) -> set(auto_process).
% 10.92/11.23      % set(auto2) -> assign(new_constants, 1).
% 10.92/11.23      % set(auto2) -> assign(fold_denial_max, 3).
% 10.92/11.23      % set(auto2) -> assign(max_weight, "200.000").
% 10.92/11.23      % set(auto2) -> assign(max_hours, 1).
% 10.92/11.23      % assign(max_hours, 1) -> assign(max_seconds, 3600).
% 10.92/11.23      % set(auto2) -> assign(max_seconds, 0).
% 10.92/11.23      % set(auto2) -> assign(max_minutes, 5).
% 10.92/11.23      % assign(max_minutes, 5) -> assign(max_seconds, 300).
% 10.92/11.23      % set(auto2) -> set(sort_initial_sos).
% 10.92/11.23      % set(auto2) -> assign(sos_limit, -1).
% 10.92/11.23      % set(auto2) -> assign(lrs_ticks, 3000).
% 10.92/11.23      % set(auto2) -> assign(max_megs, 400).
% 10.92/11.23      % set(auto2) -> assign(stats, some).
% 10.92/11.23      % set(auto2) -> clear(echo_input).
% 10.92/11.23      % set(auto2) -> set(quiet).
% 10.92/11.23      % set(auto2) -> clear(print_initial_clauses).
% 10.92/11.23      % set(auto2) -> clear(print_given).
% 10.92/11.23  assign(lrs_ticks,-1).
% 10.92/11.23  assign(sos_limit,10000).
% 10.92/11.23  assign(order,kbo).
% 10.92/11.23  set(lex_order_vars).
% 10.92/11.23  clear(print_given).
% 10.92/11.23  
% 10.92/11.23  % formulas(sos).  % not echoed (14 formulas)
% 10.92/11.23  
% 10.92/11.23  ============================== end of input ==========================
% 10.92/11.23  
% 10.92/11.23  % From the command line: assign(max_seconds, 300).
% 10.92/11.23  
% 10.92/11.23  ============================== PROCESS NON-CLAUSAL FORMULAS ==========
% 10.92/11.23  
% 10.92/11.23  % Formulas that are not ordinary clauses:
% 10.92/11.23  
% 10.92/11.23  ============================== end of process non-clausal formulas ===
% 10.92/11.23  
% 10.92/11.23  ============================== PROCESS INITIAL CLAUSES ===============
% 10.92/11.23  
% 10.92/11.23  ============================== PREDICATE ELIMINATION =================
% 10.92/11.23  
% 10.92/11.23  ============================== end predicate elimination =============
% 10.92/11.23  
% 10.92/11.23  Auto_denials:
% 10.92/11.23    % copying label prove_distributivity to answer in negative clause
% 10.92/11.23  
% 10.92/11.23  Term ordering decisions:
% 10.92/11.23  
% 10.92/11.23  % Assigning unary symbol complement kb_weight 0 and highest precedence (8).
% 10.92/11.23  Function symbol KB weights:  a=1. one=1. zero=1. b=1. meet=1. join=1. complement=0.
% 10.92/11.23  
% 10.92/11.23  ============================== end of process initial clauses ========
% 10.92/11.23  
% 10.92/11.23  ============================== CLAUSES FOR SEARCH ====================
% 10.92/11.23  
% 10.92/11.23  ============================== end of clauses for search =============
% 10.92/11.23  
% 10.92/11.23  ============================== SEARCH ================================
% 10.92/11.23  
% 10.92/11.23  % Starting search at 0.01 seconds.
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=185.000, iters=3467
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=151.000, iters=3356
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=133.000, iters=3463
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=127.000, iters=3414
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=119.000, iters=3361
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=117.000, iters=3351
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=115.000, iters=3373
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=111.000, iters=3344
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=109.000, iters=3336
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=103.000, iters=3436
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=101.000, iters=3423
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=97.000, iters=3377
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=95.000, iters=3353
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=94.000, iters=3333
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=87.000, iters=3370
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=81.000, iters=3396
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=77.000, iters=3351
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=56.000, iters=4519
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=51.000, iters=4006
% 10.92/11.23  
% 10.92/11.23  Low Water (keep): wt=47.000, iters=3506
% 10.92/11.23  
% 10.92/11.23  ============================== PROOF =================================
% 10.92/11.23  % SZS status Unsatisfiable
% 10.92/11.23  % SZS output start Refutation
% 10.92/11.23  
% 10.92/11.23  % Proof 1 at 10.04 (+ 0.06) seconds: prove_distributivity.
% 10.92/11.23  % Length of proof is 87.
% 10.92/11.23  % Level of proof is 24.
% 10.92/11.23  % Maximum clause weight is 29.000.
% 10.92/11.23  % Given clauses 331.
% 10.92/11.23  
% 10.92/11.23  1 meet(A,A) = A # label(idempotence_of_meet) # label(axiom).  [assumption].
% 10.92/11.23  2 join(A,A) = A # label(idempotence_of_join) # label(axiom).  [assumption].
% 10.92/11.23  3 meet(b,a) = a # label(prove_distributivity_hypothesis) # label(hypothesis).  [assumption].
% 10.92/11.23  4 join(A,complement(A)) = one # label(complement_join) # label(axiom).  [assumption].
% 10.92/11.23  5 meet(A,complement(A)) = zero # label(complement_meet) # label(axiom).  [assumption].
% 10.92/11.23  6 meet(A,join(A,B)) = A # label(absorption1) # label(axiom).  [assumption].
% 10.92/11.23  7 join(A,meet(A,B)) = A # label(absorption2) # label(axiom).  [assumption].
% 10.92/11.23  8 meet(A,B) = meet(B,A) # label(commutativity_of_meet) # label(axiom).  [assumption].
% 10.92/11.23  9 join(A,B) = join(B,A) # label(commutativity_of_join) # label(axiom).  [assumption].
% 10.92/11.23  10 meet(meet(A,B),C) = meet(A,meet(B,C)) # label(associativity_of_meet) # label(axiom).  [assumption].
% 10.92/11.23  11 meet(A,meet(B,C)) = meet(C,meet(A,B)).  [copy(10),rewrite([8(2)]),flip(a)].
% 10.92/11.23  12 join(join(A,B),C) = join(A,join(B,C)) # label(associativity_of_join) # label(axiom).  [assumption].
% 10.92/11.23  13 join(A,join(B,C)) = join(C,join(A,B)).  [copy(12),rewrite([9(2)]),flip(a)].
% 10.92/11.23  14 meet(A,join(B,meet(C,join(A,D)))) = meet(A,join(B,meet(C,join(B,join(D,meet(A,C)))))) # label(equation_H42) # label(axiom).  [assumption].
% 10.92/11.23  15 meet(A,join(B,meet(C,join(B,join(D,meet(A,C)))))) = meet(A,join(B,meet(C,join(A,D)))).  [copy(14),flip(a)].
% 10.92/11.23  16 join(complement(b),complement(a)) != complement(a) # label(prove_distributivity) # label(negated_conjecture) # answer(prove_distributivity).  [assumption].
% 10.92/11.23  17 join(complement(a),complement(b)) != complement(a) # answer(prove_distributivity).  [copy(16),rewrite([9(5)])].
% 10.92/11.23  18 meet(A,B) != zero | join(A,B) != one | complement(A) = B # label(meet_join_complement) # label(axiom).  [assumption].
% 10.92/11.23  19 meet(a,b) = a.  [back_rewrite(3),rewrite([8(3)])].
% 10.92/11.23  20 meet(A,one) = A.  [para(4(a,1),6(a,1,2))].
% 10.92/11.23  21 join(A,zero) = A.  [para(5(a,1),7(a,1,2))].
% 10.92/11.23  22 meet(A,meet(A,B)) = meet(A,B).  [para(11(a,1),1(a,1)),rewrite([8(1),8(2),11(2,R),1(1),8(3)])].
% 10.92/11.23  23 meet(A,meet(B,complement(A))) = meet(B,zero).  [para(5(a,1),11(a,2,2)),rewrite([8(2)])].
% 10.92/11.23  24 meet(A,meet(B,join(A,C))) = meet(A,B).  [para(6(a,1),11(a,2,2)),rewrite([8(2),8(4)])].
% 10.92/11.23  26 join(A,join(B,complement(A))) = join(B,one).  [para(4(a,1),13(a,2,2)),rewrite([9(2)])].
% 10.92/11.23  27 join(A,join(B,meet(A,C))) = join(A,B).  [para(7(a,1),13(a,2,2)),rewrite([9(2),9(4)])].
% 10.92/11.23  29 meet(A,join(B,meet(C,join(B,meet(A,C))))) = meet(A,join(B,meet(A,C))).  [para(2(a,1),15(a,1,2,2,2,2)),rewrite([7(7),8(6)])].
% 10.92/11.23  30 meet(A,join(join(B,meet(A,C)),meet(C,join(B,meet(A,C))))) = meet(A,join(B,join(meet(A,C),meet(C,join(A,B))))).  [para(2(a,1),15(a,1,2,2,2)),rewrite([9(12),13(12),9(11),13(12,R),9(11)])].
% 10.92/11.23  31 meet(A,join(B,meet(C,join(A,B)))) = meet(A,join(B,meet(A,C))).  [para(2(a,1),15(a,2,2,2,2)),rewrite([7(2),9(1),8(5)])].
% 10.92/11.23  32 meet(A,join(meet(B,join(A,C)),meet(B,join(C,join(meet(A,B),meet(B,join(A,C))))))) = meet(A,B).  [para(2(a,1),15(a,2,2)),rewrite([13(7),9(6),13(7,R),9(6),24(13)])].
% 10.92/11.23  33 meet(A,join(B,meet(complement(A),join(B,C)))) = meet(A,join(B,meet(complement(A),join(A,C)))).  [para(5(a,1),15(a,1,2,2,2,2,2)),rewrite([21(3)])].
% 10.92/11.23  34 meet(A,join(B,meet(join(A,C),join(A,join(B,D))))) = meet(A,join(B,meet(join(A,C),join(A,D)))).  [para(6(a,1),15(a,1,2,2,2,2,2)),rewrite([9(2),13(3,R),9(2)])].
% 10.92/11.23  35 meet(A,join(B,meet(C,join(B,join(D,meet(C,A)))))) = meet(A,join(B,meet(C,join(D,A)))).  [para(15(a,1),8(a,2)),rewrite([8(1),8(6),9(7)])].
% 10.92/11.23  42 meet(A,join(B,meet(one,join(A,join(B,C))))) = meet(A,join(B,meet(one,join(A,C)))).  [para(20(a,1),15(a,1,2,2,2,2,2)),rewrite([9(2),13(3,R),9(2)])].
% 10.92/11.23  43 meet(A,zero) != zero | one != A | complement(A) = zero.  [para(21(a,1),18(b,1)),flip(b)].
% 10.92/11.23  44 meet(A,zero) = zero.  [para(5(a,1),22(a,1,2)),rewrite([5(4)])].
% 10.92/11.23  46 one != A | complement(A) = zero.  [back_rewrite(43),rewrite([44(2)]),xx(a)].
% 10.92/11.23  47 meet(A,meet(B,complement(A))) = zero.  [back_rewrite(23),rewrite([44(5)])].
% 10.92/11.23  48 complement(one) = zero.  [hyper(18,a,44,a,b,21,a)].
% 10.92/11.23  52 meet(a,meet(b,join(A,a))) = a.  [para(19(a,1),24(a,2)),rewrite([9(4)])].
% 10.92/11.23  53 complement(join(A,one)) = zero.  [hyper(46,a,7,a(flip)),rewrite([8(3),20(3),9(2)])].
% 10.92/11.23  55 join(A,one) = one.  [para(53(a,1),4(a,1,2)),rewrite([9(4),13(4),9(3),21(3),9(2)])].
% 10.92/11.23  56 join(A,join(B,complement(A))) = one.  [back_rewrite(26),rewrite([55(5)])].
% 10.92/11.23  57 complement(zero) = one.  [hyper(18,a,20,a,b,55,a)].
% 10.92/11.23  75 meet(A,join(B,meet(A,B))) = meet(A,B).  [para(6(a,1),29(a,1,2,2)),rewrite([2(1)]),flip(a)].
% 10.92/11.23  76 meet(A,join(B,meet(C,join(B,meet(C,A))))) = meet(A,join(B,meet(C,A))).  [para(29(a,1),8(a,2)),rewrite([8(1),8(5),8(6)])].
% 10.92/11.23  95 meet(A,join(zero,meet(B,complement(A)))) = zero.  [para(47(a,1),75(a,1,2,2)),rewrite([9(4),47(8)])].
% 10.92/11.23  99 meet(A,join(zero,complement(A))) = zero.  [para(1(a,1),95(a,1,2,2))].
% 10.92/11.23  103 join(zero,complement(A)) = complement(A).  [hyper(18,a,99,a,b,56,a),flip(a)].
% 10.92/11.23  129 meet(zero,complement(A)) = zero.  [para(103(a,1),6(a,1,2))].
% 10.92/11.23  145 meet(A,join(complement(A),meet(A,B))) = meet(A,join(B,complement(A))).  [para(4(a,1),31(a,1,2,2,2)),rewrite([20(3),9(2)]),flip(a)].
% 10.92/11.23  162 meet(zero,join(complement(A),meet(B,complement(A)))) = zero.  [para(103(a,1),31(a,1,2,2,2)),rewrite([8(10),44(10),21(10),129(9)])].
% 10.92/11.23  260 meet(one,join(A,meet(zero,join(A,B)))) = A.  [para(48(a,1),33(a,1,2,2,1)),rewrite([48(9),9(10),55(10),8(10),44(10),21(9),8(8),20(8)])].
% 10.92/11.23  310 meet(A,join(B,meet(zero,join(B,C)))) = meet(A,B).  [para(260(a,1),11(a,1,2)),rewrite([20(7),8(6)]),flip(a)].
% 10.92/11.23  314 meet(one,complement(A)) = complement(A).  [para(162(a,1),260(a,1,2,2)),rewrite([21(4)])].
% 10.92/11.23  318 join(one,complement(A)) = one.  [para(314(a,1),7(a,1,2))].
% 10.92/11.23  384 meet(one,join(A,meet(B,join(A,join(B,C))))) = meet(one,join(A,B)).  [para(20(a,1),35(a,1,2,2,2,2,2)),rewrite([9(2),55(9),20(9)])].
% 10.92/11.23  492 join(A,meet(zero,join(A,B))) = A.  [para(310(a,1),1(a,1)),rewrite([8(5),6(5)]),flip(a)].
% 10.92/11.23  521 join(zero,meet(A,B)) = meet(A,B).  [para(32(a,1),492(a,1,2)),rewrite([9(2),21(2),8(3),44(3),9(3),9(5),21(5)])].
% 10.92/11.23  631 meet(A,meet(B,join(C,meet(A,B)))) = meet(A,B).  [para(521(a,1),15(a,1,2)),rewrite([13(4,R),9(3),521(3),521(8),24(7)])].
% 10.92/11.23  794 meet(A,complement(join(A,B))) = zero.  [para(33(a,1),631(a,1,2)),rewrite([9(7),13(7,R),2(6),8(7),5(7),21(5),8(4),6(4),8(3),8(7),5(7)])].
% 10.92/11.23  934 meet(A,join(B,meet(one,join(A,complement(B))))) = A.  [para(4(a,1),42(a,1,2,2,2,2)),rewrite([55(3),1(3),55(2),20(2)]),flip(a)].
% 10.92/11.23  969 meet(A,join(B,meet(one,join(A,C)))) = A.  [para(934(a,1),34(a,2,2,2)),rewrite([9(5),13(5),9(4),4(4),55(4),1(4),55(3),55(3),8(3),13(7,R),9(6),6(8)])].
% 10.92/11.23  995 meet(A,meet(B,join(C,meet(one,join(A,D))))) = meet(A,B).  [para(969(a,1),11(a,2,2)),rewrite([8(5),8(7)])].
% 10.92/11.23  997 meet(join(A,B),join(C,meet(one,join(A,B)))) = join(A,B).  [para(30(a,1),969(a,1,2,2)),rewrite([8(2),20(2),8(4),20(4),9(4),55(4),20(4),2(3),8(8),20(8)])].
% 10.92/11.23  1604 meet(a,join(complement(a),meet(b,join(A,a)))) = a.  [para(52(a,1),145(a,1,2,2)),rewrite([9(5),4(5),20(3),9(9)]),flip(a)].
% 10.92/11.23  1643 meet(A,join(complement(A),complement(join(A,B)))) = zero.  [para(794(a,1),145(a,1,2,2)),rewrite([21(3),5(2),9(5)]),flip(a)].
% 10.92/11.23  1848 meet(a,join(complement(a),meet(one,b))) = a.  [para(1604(a,1),15(a,2)),rewrite([19(10),2(9),9(8),4(8),8(6)])].
% 10.92/11.23  1865 meet(complement(a),join(a,meet(one,b))) = meet(b,complement(a)).  [para(1848(a,1),31(a,1,2,2)),rewrite([9(7),8(17),5(17),9(15),521(15),11(14),8(13),314(13)])].
% 10.92/11.23  1934 meet(complement(A),join(B,meet(A,B))) = meet(B,complement(A)).  [para(5(a,1),76(a,1,2,2,2,2)),rewrite([21(3),5(7),21(7),8(6)])].
% 10.92/11.23  4100 meet(zero,meet(complement(A),join(B,C))) = zero.  [para(129(a,1),995(a,2)),rewrite([9(5),21(5),8(4),20(4)])].
% 10.92/11.23  4173 meet(zero,meet(b,complement(a))) = zero.  [para(1865(a,1),4100(a,1,2))].
% 10.92/11.23  4175 meet(zero,b) = zero.  [para(4173(a,1),11(a,1)),rewrite([11(7),8(6),129(6),8(4)]),flip(a)].
% 10.92/11.23  4292 meet(one,join(zero,b)) = meet(one,b).  [para(4175(a,1),1934(a,1,2,2)),rewrite([57(2),9(4),57(8),8(8)])].
% 10.92/11.23  4295 meet(A,join(zero,b)) = meet(A,meet(one,b)).  [para(4292(a,1),11(a,1,2)),rewrite([20(9),8(8)]),flip(a)].
% 10.92/11.23  4994 join(zero,b) = meet(one,b).  [para(4295(a,1),1(a,1)),rewrite([8(7),4295(7),1(7)]),flip(a)].
% 10.92/11.23  4995 meet(A,meet(one,b)) = meet(A,b).  [para(11(a,1),4295(a,2)),rewrite([4994(3),20(7),8(6)])].
% 10.92/11.23  5327 meet(one,b) = b.  [para(4995(a,1),1(a,1)),rewrite([8(5),4995(5),1(3)]),flip(a)].
% 10.92/11.23  7652 meet(one,join(A,B)) = join(A,B).  [para(2(a,1),997(a,1,2)),rewrite([11(5,R),1(4)])].
% 10.92/11.23  7859 join(A,meet(B,join(A,join(B,C)))) = join(A,B).  [back_rewrite(384),rewrite([7652(6),7652(7)])].
% 10.92/11.23  8555 join(A,meet(meet(A,B),join(A,C))) = A.  [para(7(a,1),7859(a,2)),rewrite([9(3),27(4)])].
% 10.92/11.23  8654 meet(A,join(B,meet(A,meet(B,C)))) = meet(A,B).  [para(8555(a,1),29(a,1,2)),flip(a)].
% 10.92/11.23  11612 join(b,meet(A,b)) = b.  [para(5327(a,1),8654(a,2)),rewrite([8(5),11(6,R),8(5),5327(5),7652(6)])].
% 10.92/11.23  11678 join(a,b) = b.  [para(19(a,1),11612(a,1,2)),rewrite([9(3)])].
% 10.92/11.23  11794 meet(a,join(complement(a),complement(b))) = zero.  [para(11678(a,1),1643(a,1,2,2,1))].
% 10.92/11.23  12010 join(a,join(complement(a),complement(b))) != one # answer(prove_distributivity).  [ur(18,a,11794,a,c,17,a(flip))].
% 10.92/11.23  12057 $F # answer(prove_distributivity).  [para(13(a,1),12010(a,1)),rewrite([4(6),9(4),318(4)]),xx(a)].
% 10.92/11.23  
% 10.92/11.23  % SZS output end Refutation
% 10.92/11.23  ============================== end of proof ==========================
% 10.92/11.23  
% 10.92/11.23  ============================== STATISTICS ============================
% 10.92/11.23  
% 10.92/11.23  Given=331. Generated=61011. Kept=12052. proofs=1.
% 10.92/11.23  Usable=211. Sos=6544. Demods=6049. Limbo=0, Disabled=5311. Hints=0.
% 10.92/11.23  Megabytes=28.72.
% 10.92/11.23  User_CPU=10.04, System_CPU=0.06, Wall_clock=10.
% 10.92/11.23  
% 10.92/11.23  ============================== end of statistics =====================
% 10.92/11.23  
% 10.92/11.23  ============================== end of search =========================
% 10.92/11.23  
% 10.92/11.23  THEOREM PROVED
% 10.92/11.23  % SZS status Unsatisfiable
% 10.92/11.23  
% 10.92/11.23  Exiting with 1 proof.
% 10.92/11.23  
% 10.92/11.23  Process 25343 exit (max_proofs) Thu Jun 30 16:26:09 2022
% 10.92/11.23  Prover9 interrupted
%------------------------------------------------------------------------------