%------------------------------------------------------------------------------
% File     : Prover9---1109a
% Problem  : PUZ028-6 : TPTP v8.1.0. Released v2.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : tptp2X_and_run_prover9 %d %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  : 600s
% DateTime : Mon Jul 18 18:23:52 EDT 2022

% Result   : Unsatisfiable 1.49s 1.77s
% Output   : Refutation 1.49s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.11  % Problem  : PUZ028-6 : TPTP v8.1.0. Released v2.0.0.
% 0.06/0.12  % Command  : tptp2X_and_run_prover9 %d %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  : 600
% 0.12/0.33  % DateTime : Sat May 28 23:39:47 EDT 2022
% 0.12/0.33  % CPUTime  : 
% 0.41/0.96  ============================== Prover9 ===============================
% 0.41/0.96  Prover9 (32) version 2009-11A, November 2009.
% 0.41/0.96  Process 28737 was started by sandbox2 on n028.cluster.edu,
% 0.41/0.96  Sat May 28 23:39:48 2022
% 0.41/0.96  The command was "/export/starexec/sandbox2/solver/bin/prover9 -t 300 -f /tmp/Prover9_28584_n028.cluster.edu".
% 0.41/0.96  ============================== end of head ===========================
% 0.41/0.96  
% 0.41/0.96  ============================== INPUT =================================
% 0.41/0.96  
% 0.41/0.96  % Reading from file /tmp/Prover9_28584_n028.cluster.edu
% 0.41/0.96  
% 0.41/0.96  set(prolog_style_variables).
% 0.41/0.96  set(auto2).
% 0.41/0.96      % set(auto2) -> set(auto).
% 0.41/0.96      % set(auto) -> set(auto_inference).
% 0.41/0.96      % set(auto) -> set(auto_setup).
% 0.41/0.96      % set(auto_setup) -> set(predicate_elim).
% 0.41/0.96      % set(auto_setup) -> assign(eq_defs, unfold).
% 0.41/0.96      % set(auto) -> set(auto_limits).
% 0.41/0.96      % set(auto_limits) -> assign(max_weight, "100.000").
% 0.41/0.96      % set(auto_limits) -> assign(sos_limit, 20000).
% 0.41/0.96      % set(auto) -> set(auto_denials).
% 0.41/0.96      % set(auto) -> set(auto_process).
% 0.41/0.96      % set(auto2) -> assign(new_constants, 1).
% 0.41/0.96      % set(auto2) -> assign(fold_denial_max, 3).
% 0.41/0.96      % set(auto2) -> assign(max_weight, "200.000").
% 0.41/0.96      % set(auto2) -> assign(max_hours, 1).
% 0.41/0.96      % assign(max_hours, 1) -> assign(max_seconds, 3600).
% 0.41/0.96      % set(auto2) -> assign(max_seconds, 0).
% 0.41/0.96      % set(auto2) -> assign(max_minutes, 5).
% 0.41/0.96      % assign(max_minutes, 5) -> assign(max_seconds, 300).
% 0.41/0.96      % set(auto2) -> set(sort_initial_sos).
% 0.41/0.96      % set(auto2) -> assign(sos_limit, -1).
% 0.41/0.96      % set(auto2) -> assign(lrs_ticks, 3000).
% 0.41/0.96      % set(auto2) -> assign(max_megs, 400).
% 0.41/0.96      % set(auto2) -> assign(stats, some).
% 0.41/0.96      % set(auto2) -> clear(echo_input).
% 0.41/0.96      % set(auto2) -> set(quiet).
% 0.41/0.96      % set(auto2) -> clear(print_initial_clauses).
% 0.41/0.96      % set(auto2) -> clear(print_given).
% 0.41/0.96  assign(lrs_ticks,-1).
% 0.41/0.96  assign(sos_limit,10000).
% 0.41/0.96  assign(order,kbo).
% 0.41/0.96  set(lex_order_vars).
% 0.41/0.96  clear(print_given).
% 0.41/0.96  
% 0.41/0.96  % formulas(sos).  % not echoed (41 formulas)
% 0.41/0.96  
% 0.41/0.96  ============================== end of input ==========================
% 0.41/0.96  
% 0.41/0.96  % From the command line: assign(max_seconds, 300).
% 0.41/0.96  
% 0.41/0.96  ============================== PROCESS NON-CLAUSAL FORMULAS ==========
% 0.41/0.96  
% 0.41/0.96  % Formulas that are not ordinary clauses:
% 0.41/0.96  
% 0.41/0.96  ============================== end of process non-clausal formulas ===
% 0.41/0.96  
% 0.41/0.96  ============================== PROCESS INITIAL CLAUSES ===============
% 0.41/0.96  
% 0.41/0.96  ============================== PREDICATE ELIMINATION =================
% 0.41/0.96  1 familiar(A,B) | not_familiar(A,B) | -person(A) | -person(B) | -not_equal(A,B) # label(familiar_or_not) # label(axiom).  [assumption].
% 0.41/0.96  2 not_equal(n1,n2) # label(not_equal_1_2) # label(axiom).  [assumption].
% 0.41/0.96  3 not_equal(n1,n3) # label(not_equal_1_3) # label(axiom).  [assumption].
% 0.41/0.96  4 not_equal(n1,n4) # label(not_equal_1_4) # label(axiom).  [assumption].
% 0.41/0.96  5 not_equal(n1,n5) # label(not_equal_1_5) # label(axiom).  [assumption].
% 0.41/0.96  6 not_equal(n1,n6) # label(not_equal_1_6) # label(axiom).  [assumption].
% 0.41/0.96  7 not_equal(n2,n1) # label(not_equal_2_1) # label(axiom).  [assumption].
% 0.41/0.96  8 not_equal(n2,n3) # label(not_equal_2_3) # label(axiom).  [assumption].
% 0.41/0.96  9 not_equal(n2,n4) # label(not_equal_2_4) # label(axiom).  [assumption].
% 0.41/0.96  10 not_equal(n2,n5) # label(not_equal_2_5) # label(axiom).  [assumption].
% 0.41/0.96  11 not_equal(n2,n6) # label(not_equal_2_6) # label(axiom).  [assumption].
% 0.41/0.96  12 not_equal(n3,n1) # label(not_equal_3_1) # label(axiom).  [assumption].
% 0.41/0.96  13 not_equal(n3,n2) # label(not_equal_3_2) # label(axiom).  [assumption].
% 0.41/0.96  14 not_equal(n3,n4) # label(not_equal_3_4) # label(axiom).  [assumption].
% 0.41/0.96  15 not_equal(n3,n5) # label(not_equal_3_5) # label(axiom).  [assumption].
% 0.41/0.96  16 not_equal(n3,n6) # label(not_equal_3_6) # label(axiom).  [assumption].
% 0.41/0.96  17 not_equal(n4,n1) # label(not_equal_4_1) # label(axiom).  [assumption].
% 0.41/0.96  18 not_equal(n4,n2) # label(not_equal_4_2) # label(axiom).  [assumption].
% 0.41/0.96  19 not_equal(n4,n3) # label(not_equal_4_3) # label(axiom).  [assumption].
% 0.41/0.96  20 not_equal(n4,n5) # label(not_equal_4_5) # label(axiom).  [assumption].
% 0.41/0.96  21 not_equal(n4,n6) # label(not_equal_4_6) # label(axiom).  [assumption].
% 0.41/0.96  22 not_equal(n5,n1) # label(not_equal_5_1) # label(axiom).  [assumption].
% 0.41/0.96  23 not_equal(n5,n2) # label(not_equal_5_2) # label(axiom).  [assumption].
% 0.69/1.00  24 not_equal(n5,n3) # label(not_equal_5_3) # label(axiom).  [assumption].
% 0.69/1.00  25 not_equal(n5,n4) # label(not_equal_5_4) # label(axiom).  [assumption].
% 0.69/1.00  26 not_equal(n5,n6) # label(not_equal_5_6) # label(axiom).  [assumption].
% 0.69/1.00  27 not_equal(n6,n1) # label(not_equal_6_1) # label(axiom).  [assumption].
% 0.69/1.00  28 not_equal(n6,n2) # label(not_equal_6_2) # label(axiom).  [assumption].
% 0.69/1.00  29 not_equal(n6,n3) # label(not_equal_6_3) # label(axiom).  [assumption].
% 0.69/1.00  30 not_equal(n6,n4) # label(not_equal_6_4) # label(axiom).  [assumption].
% 0.69/1.00  31 not_equal(n6,n5) # label(not_equal_6_5) # label(axiom).  [assumption].
% 0.69/1.00  Derived: familiar(n1,n2) | not_familiar(n1,n2) | -person(n1) | -person(n2).  [resolve(1,e,2,a)].
% 0.69/1.00  Derived: familiar(n1,n3) | not_familiar(n1,n3) | -person(n1) | -person(n3).  [resolve(1,e,3,a)].
% 0.69/1.00  Derived: familiar(n1,n4) | not_familiar(n1,n4) | -person(n1) | -person(n4).  [resolve(1,e,4,a)].
% 0.69/1.00  Derived: familiar(n1,n5) | not_familiar(n1,n5) | -person(n1) | -person(n5).  [resolve(1,e,5,a)].
% 0.69/1.00  Derived: familiar(n1,n6) | not_familiar(n1,n6) | -person(n1) | -person(n6).  [resolve(1,e,6,a)].
% 0.69/1.00  Derived: familiar(n2,n1) | not_familiar(n2,n1) | -person(n2) | -person(n1).  [resolve(1,e,7,a)].
% 0.69/1.00  Derived: familiar(n2,n3) | not_familiar(n2,n3) | -person(n2) | -person(n3).  [resolve(1,e,8,a)].
% 0.69/1.00  Derived: familiar(n2,n4) | not_familiar(n2,n4) | -person(n2) | -person(n4).  [resolve(1,e,9,a)].
% 0.69/1.00  Derived: familiar(n2,n5) | not_familiar(n2,n5) | -person(n2) | -person(n5).  [resolve(1,e,10,a)].
% 0.69/1.00  Derived: familiar(n2,n6) | not_familiar(n2,n6) | -person(n2) | -person(n6).  [resolve(1,e,11,a)].
% 0.69/1.00  Derived: familiar(n3,n1) | not_familiar(n3,n1) | -person(n3) | -person(n1).  [resolve(1,e,12,a)].
% 0.69/1.00  Derived: familiar(n3,n2) | not_familiar(n3,n2) | -person(n3) | -person(n2).  [resolve(1,e,13,a)].
% 0.69/1.00  Derived: familiar(n3,n4) | not_familiar(n3,n4) | -person(n3) | -person(n4).  [resolve(1,e,14,a)].
% 0.69/1.00  Derived: familiar(n3,n5) | not_familiar(n3,n5) | -person(n3) | -person(n5).  [resolve(1,e,15,a)].
% 0.69/1.00  Derived: familiar(n3,n6) | not_familiar(n3,n6) | -person(n3) | -person(n6).  [resolve(1,e,16,a)].
% 0.69/1.00  Derived: familiar(n4,n1) | not_familiar(n4,n1) | -person(n4) | -person(n1).  [resolve(1,e,17,a)].
% 0.69/1.00  Derived: familiar(n4,n2) | not_familiar(n4,n2) | -person(n4) | -person(n2).  [resolve(1,e,18,a)].
% 0.69/1.00  Derived: familiar(n4,n3) | not_familiar(n4,n3) | -person(n4) | -person(n3).  [resolve(1,e,19,a)].
% 0.69/1.00  Derived: familiar(n4,n5) | not_familiar(n4,n5) | -person(n4) | -person(n5).  [resolve(1,e,20,a)].
% 0.69/1.00  Derived: familiar(n4,n6) | not_familiar(n4,n6) | -person(n4) | -person(n6).  [resolve(1,e,21,a)].
% 0.69/1.00  Derived: familiar(n5,n1) | not_familiar(n5,n1) | -person(n5) | -person(n1).  [resolve(1,e,22,a)].
% 0.69/1.00  Derived: familiar(n5,n2) | not_familiar(n5,n2) | -person(n5) | -person(n2).  [resolve(1,e,23,a)].
% 0.69/1.00  Derived: familiar(n5,n3) | not_familiar(n5,n3) | -person(n5) | -person(n3).  [resolve(1,e,24,a)].
% 0.69/1.00  Derived: familiar(n5,n4) | not_familiar(n5,n4) | -person(n5) | -person(n4).  [resolve(1,e,25,a)].
% 0.69/1.00  Derived: familiar(n5,n6) | not_familiar(n5,n6) | -person(n5) | -person(n6).  [resolve(1,e,26,a)].
% 0.69/1.00  Derived: familiar(n6,n1) | not_familiar(n6,n1) | -person(n6) | -person(n1).  [resolve(1,e,27,a)].
% 0.69/1.00  Derived: familiar(n6,n2) | not_familiar(n6,n2) | -person(n6) | -person(n2).  [resolve(1,e,28,a)].
% 0.69/1.00  Derived: familiar(n6,n3) | not_familiar(n6,n3) | -person(n6) | -person(n3).  [resolve(1,e,29,a)].
% 0.69/1.00  Derived: familiar(n6,n4) | not_familiar(n6,n4) | -person(n6) | -person(n4).  [resolve(1,e,30,a)].
% 0.69/1.00  Derived: familiar(n6,n5) | not_familiar(n6,n5) | -person(n6) | -person(n5).  [resolve(1,e,31,a)].
% 0.69/1.00  
% 0.69/1.00  ============================== end predicate elimination =============
% 0.69/1.00  
% 0.69/1.00  Auto_denials:  (non-Horn, no changes).
% 0.69/1.00  
% 0.69/1.00  Term ordering decisions:
% 0.69/1.00  Function symbol KB weights:  n1=1. n2=1. n3=1. n4=1. n5=1. n6=1.
% 0.69/1.00  
% 0.69/1.00  ============================== end of process initial clauses ========
% 0.69/1.00  
% 0.69/1.00  ============================== CLAUSES FOR SEARCH ====================
% 0.69/1.00  
% 0.69/1.00  ============================== end of clauses for search =============
% 0.69/1.00  
% 0.69/1.00  ============================== SEARCH ================================
% 0.69/1.00  
% 0.69/1.00  % Starting search at 0.01 seconds.
% 0.69/1.00  
% 0.69/1.00  NOTE: Back_subsumption disabled, ratio of kept to back_subsumed is 2147483647 (0.00 of 0.05 sec).
% 1.49/1.77  
% 1.49/1.77  Low Water (keep): wt=15.000, iters=3714
% 1.49/1.77  
% 1.49/1.77  ============================== PROOF =================================
% 1.49/1.77  % SZS status Unsatisfiable
% 1.49/1.77  % SZS output start Refutation
% 1.49/1.77  
% 1.49/1.77  % Proof 1 at 0.79 (+ 0.04) seconds.
% 1.49/1.77  % Length of proof is 427.
% 1.49/1.77  % Level of proof is 57.
% 1.49/1.77  % Maximum clause weight is 15.000.
% 1.49/1.77  % Given clauses 2494.
% 1.49/1.77  
% 1.49/1.77  1 familiar(A,B) | not_familiar(A,B) | -person(A) | -person(B) | -not_equal(A,B) # label(familiar_or_not) # label(axiom).  [assumption].
% 1.49/1.77  2 not_equal(n1,n2) # label(not_equal_1_2) # label(axiom).  [assumption].
% 1.49/1.77  3 not_equal(n1,n3) # label(not_equal_1_3) # label(axiom).  [assumption].
% 1.49/1.77  4 not_equal(n1,n4) # label(not_equal_1_4) # label(axiom).  [assumption].
% 1.49/1.77  5 not_equal(n1,n5) # label(not_equal_1_5) # label(axiom).  [assumption].
% 1.49/1.77  6 not_equal(n1,n6) # label(not_equal_1_6) # label(axiom).  [assumption].
% 1.49/1.77  7 not_equal(n2,n1) # label(not_equal_2_1) # label(axiom).  [assumption].
% 1.49/1.77  8 not_equal(n2,n3) # label(not_equal_2_3) # label(axiom).  [assumption].
% 1.49/1.77  9 not_equal(n2,n4) # label(not_equal_2_4) # label(axiom).  [assumption].
% 1.49/1.77  10 not_equal(n2,n5) # label(not_equal_2_5) # label(axiom).  [assumption].
% 1.49/1.77  11 not_equal(n2,n6) # label(not_equal_2_6) # label(axiom).  [assumption].
% 1.49/1.77  12 not_equal(n3,n1) # label(not_equal_3_1) # label(axiom).  [assumption].
% 1.49/1.77  13 not_equal(n3,n2) # label(not_equal_3_2) # label(axiom).  [assumption].
% 1.49/1.77  14 not_equal(n3,n4) # label(not_equal_3_4) # label(axiom).  [assumption].
% 1.49/1.77  15 not_equal(n3,n5) # label(not_equal_3_5) # label(axiom).  [assumption].
% 1.49/1.77  16 not_equal(n3,n6) # label(not_equal_3_6) # label(axiom).  [assumption].
% 1.49/1.77  17 not_equal(n4,n1) # label(not_equal_4_1) # label(axiom).  [assumption].
% 1.49/1.77  18 not_equal(n4,n2) # label(not_equal_4_2) # label(axiom).  [assumption].
% 1.49/1.77  19 not_equal(n4,n3) # label(not_equal_4_3) # label(axiom).  [assumption].
% 1.49/1.77  20 not_equal(n4,n5) # label(not_equal_4_5) # label(axiom).  [assumption].
% 1.49/1.77  21 not_equal(n4,n6) # label(not_equal_4_6) # label(axiom).  [assumption].
% 1.49/1.77  22 not_equal(n5,n1) # label(not_equal_5_1) # label(axiom).  [assumption].
% 1.49/1.77  23 not_equal(n5,n2) # label(not_equal_5_2) # label(axiom).  [assumption].
% 1.49/1.77  24 not_equal(n5,n3) # label(not_equal_5_3) # label(axiom).  [assumption].
% 1.49/1.77  25 not_equal(n5,n4) # label(not_equal_5_4) # label(axiom).  [assumption].
% 1.49/1.77  26 not_equal(n5,n6) # label(not_equal_5_6) # label(axiom).  [assumption].
% 1.49/1.77  27 not_equal(n6,n1) # label(not_equal_6_1) # label(axiom).  [assumption].
% 1.49/1.77  28 not_equal(n6,n2) # label(not_equal_6_2) # label(axiom).  [assumption].
% 1.49/1.77  29 not_equal(n6,n3) # label(not_equal_6_3) # label(axiom).  [assumption].
% 1.49/1.77  30 not_equal(n6,n4) # label(not_equal_6_4) # label(axiom).  [assumption].
% 1.49/1.77  31 not_equal(n6,n5) # label(not_equal_6_5) # label(axiom).  [assumption].
% 1.49/1.77  32 person(n1) # label(person_1) # label(axiom).  [assumption].
% 1.49/1.77  33 person(n2) # label(person_2) # label(axiom).  [assumption].
% 1.49/1.77  34 person(n3) # label(person_3) # label(axiom).  [assumption].
% 1.49/1.77  35 person(n4) # label(person_4) # label(axiom).  [assumption].
% 1.49/1.77  36 person(n5) # label(person_5) # label(axiom).  [assumption].
% 1.49/1.77  37 person(n6) # label(person_6) # label(axiom).  [assumption].
% 1.49/1.77  38 -familiar(A,B) | -familiar(B,C) | -familiar(C,A) # label(three_familiar) # label(negated_conjecture).  [assumption].
% 1.49/1.77  39 -not_familiar(A,B) | -not_familiar(B,C) | -not_familiar(C,A) # label(three_not_familiar) # label(negated_conjecture).  [assumption].
% 1.49/1.77  40 -familiar(A,B) | familiar(B,A) # label(symmetry_of_familiar) # label(axiom).  [assumption].
% 1.49/1.77  41 -not_familiar(A,B) | not_familiar(B,A) # label(symmetry_of_not_familiar) # label(axiom).  [assumption].
% 1.49/1.77  42 familiar(n1,n2) | not_familiar(n1,n2) | -person(n1) | -person(n2).  [resolve(1,e,2,a)].
% 1.49/1.77  43 familiar(n1,n2) | not_familiar(n1,n2).  [copy(42),unit_del(c,32),unit_del(d,33)].
% 1.49/1.77  44 familiar(n1,n3) | not_familiar(n1,n3) | -person(n1) | -person(n3).  [resolve(1,e,3,a)].
% 1.49/1.77  45 familiar(n1,n3) | not_familiar(n1,n3).  [copy(44),unit_del(c,32),unit_del(d,34)].
% 1.49/1.77  46 familiar(n1,n4) | not_familiar(n1,n4) | -person(n1) | -person(n4).  [resolve(1,e,4,a)].
% 1.49/1.77  47 familiar(n1,n4) | not_familiar(n1,n4).  [copy(46),unit_del(c,32),unit_del(d,35)].
% 1.49/1.77  48 familiar(n1,n5) | not_familiar(n1,n5) | -person(n1) | -person(n5).  [resolve(1,e,5,a)].
% 1.49/1.77  49 familiar(n1,n5) | not_familiar(n1,n5).  [copy(48),unit_del(c,32),unit_del(d,36)].
% 1.49/1.77  50 familiar(n1,n6) | not_familiar(n1,n6) | -person(n1) | -person(n6).  [resolve(1,e,6,a)].
% 1.49/1.77  51 familiar(n1,n6) | not_familiar(n1,n6).  [copy(50),unit_del(c,32),unit_del(d,37)].
% 1.49/1.77  52 familiar(n2,n1) | not_familiar(n2,n1) | -person(n2) | -person(n1).  [resolve(1,e,7,a)].
% 1.49/1.77  53 familiar(n2,n1) | not_familiar(n2,n1).  [copy(52),unit_del(c,33),unit_del(d,32)].
% 1.49/1.77  54 familiar(n2,n3) | not_familiar(n2,n3) | -person(n2) | -person(n3).  [resolve(1,e,8,a)].
% 1.49/1.77  55 familiar(n2,n3) | not_familiar(n2,n3).  [copy(54),unit_del(c,33),unit_del(d,34)].
% 1.49/1.77  56 familiar(n2,n4) | not_familiar(n2,n4) | -person(n2) | -person(n4).  [resolve(1,e,9,a)].
% 1.49/1.77  57 familiar(n2,n4) | not_familiar(n2,n4).  [copy(56),unit_del(c,33),unit_del(d,35)].
% 1.49/1.77  58 familiar(n2,n5) | not_familiar(n2,n5) | -person(n2) | -person(n5).  [resolve(1,e,10,a)].
% 1.49/1.77  59 familiar(n2,n5) | not_familiar(n2,n5).  [copy(58),unit_del(c,33),unit_del(d,36)].
% 1.49/1.77  60 familiar(n2,n6) | not_familiar(n2,n6) | -person(n2) | -person(n6).  [resolve(1,e,11,a)].
% 1.49/1.77  61 familiar(n2,n6) | not_familiar(n2,n6).  [copy(60),unit_del(c,33),unit_del(d,37)].
% 1.49/1.77  62 familiar(n3,n1) | not_familiar(n3,n1) | -person(n3) | -person(n1).  [resolve(1,e,12,a)].
% 1.49/1.77  63 familiar(n3,n1) | not_familiar(n3,n1).  [copy(62),unit_del(c,34),unit_del(d,32)].
% 1.49/1.77  64 familiar(n3,n2) | not_familiar(n3,n2) | -person(n3) | -person(n2).  [resolve(1,e,13,a)].
% 1.49/1.77  65 familiar(n3,n2) | not_familiar(n3,n2).  [copy(64),unit_del(c,34),unit_del(d,33)].
% 1.49/1.77  66 familiar(n3,n4) | not_familiar(n3,n4) | -person(n3) | -person(n4).  [resolve(1,e,14,a)].
% 1.49/1.77  67 familiar(n3,n4) | not_familiar(n3,n4).  [copy(66),unit_del(c,34),unit_del(d,35)].
% 1.49/1.77  68 familiar(n3,n5) | not_familiar(n3,n5) | -person(n3) | -person(n5).  [resolve(1,e,15,a)].
% 1.49/1.77  69 familiar(n3,n5) | not_familiar(n3,n5).  [copy(68),unit_del(c,34),unit_del(d,36)].
% 1.49/1.77  70 familiar(n3,n6) | not_familiar(n3,n6) | -person(n3) | -person(n6).  [resolve(1,e,16,a)].
% 1.49/1.77  71 familiar(n3,n6) | not_familiar(n3,n6).  [copy(70),unit_del(c,34),unit_del(d,37)].
% 1.49/1.77  72 familiar(n4,n1) | not_familiar(n4,n1) | -person(n4) | -person(n1).  [resolve(1,e,17,a)].
% 1.49/1.77  73 familiar(n4,n1) | not_familiar(n4,n1).  [copy(72),unit_del(c,35),unit_del(d,32)].
% 1.49/1.77  74 familiar(n4,n2) | not_familiar(n4,n2) | -person(n4) | -person(n2).  [resolve(1,e,18,a)].
% 1.49/1.77  75 familiar(n4,n2) | not_familiar(n4,n2).  [copy(74),unit_del(c,35),unit_del(d,33)].
% 1.49/1.77  76 familiar(n4,n3) | not_familiar(n4,n3) | -person(n4) | -person(n3).  [resolve(1,e,19,a)].
% 1.49/1.77  77 familiar(n4,n3) | not_familiar(n4,n3).  [copy(76),unit_del(c,35),unit_del(d,34)].
% 1.49/1.77  78 familiar(n4,n5) | not_familiar(n4,n5) | -person(n4) | -person(n5).  [resolve(1,e,20,a)].
% 1.49/1.77  79 familiar(n4,n5) | not_familiar(n4,n5).  [copy(78),unit_del(c,35),unit_del(d,36)].
% 1.49/1.77  80 familiar(n4,n6) | not_familiar(n4,n6) | -person(n4) | -person(n6).  [resolve(1,e,21,a)].
% 1.49/1.77  81 familiar(n4,n6) | not_familiar(n4,n6).  [copy(80),unit_del(c,35),unit_del(d,37)].
% 1.49/1.77  82 familiar(n5,n1) | not_familiar(n5,n1) | -person(n5) | -person(n1).  [resolve(1,e,22,a)].
% 1.49/1.77  83 familiar(n5,n1) | not_familiar(n5,n1).  [copy(82),unit_del(c,36),unit_del(d,32)].
% 1.49/1.77  84 familiar(n5,n2) | not_familiar(n5,n2) | -person(n5) | -person(n2).  [resolve(1,e,23,a)].
% 1.49/1.77  85 familiar(n5,n2) | not_familiar(n5,n2).  [copy(84),unit_del(c,36),unit_del(d,33)].
% 1.49/1.77  86 familiar(n5,n3) | not_familiar(n5,n3) | -person(n5) | -person(n3).  [resolve(1,e,24,a)].
% 1.49/1.77  87 familiar(n5,n3) | not_familiar(n5,n3).  [copy(86),unit_del(c,36),unit_del(d,34)].
% 1.49/1.77  88 familiar(n5,n4) | not_familiar(n5,n4) | -person(n5) | -person(n4).  [resolve(1,e,25,a)].
% 1.49/1.77  89 familiar(n5,n4) | not_familiar(n5,n4).  [copy(88),unit_del(c,36),unit_del(d,35)].
% 1.49/1.77  90 familiar(n5,n6) | not_familiar(n5,n6) | -person(n5) | -person(n6).  [resolve(1,e,26,a)].
% 1.49/1.77  91 familiar(n5,n6) | not_familiar(n5,n6).  [copy(90),unit_del(c,36),unit_del(d,37)].
% 1.49/1.77  92 familiar(n6,n1) | not_familiar(n6,n1) | -person(n6) | -person(n1).  [resolve(1,e,27,a)].
% 1.49/1.77  93 familiar(n6,n1) | not_familiar(n6,n1).  [copy(92),unit_del(c,37),unit_del(d,32)].
% 1.49/1.77  94 familiar(n6,n2) | not_familiar(n6,n2) | -person(n6) | -person(n2).  [resolve(1,e,28,a)].
% 1.49/1.77  95 familiar(n6,n2) | not_familiar(n6,n2).  [copy(94),unit_del(c,37),unit_del(d,33)].
% 1.49/1.77  96 familiar(n6,n3) | not_familiar(n6,n3) | -person(n6) | -person(n3).  [resolve(1,e,29,a)].
% 1.49/1.77  97 familiar(n6,n3) | not_familiar(n6,n3).  [copy(96),unit_del(c,37),unit_del(d,34)].
% 1.49/1.77  98 familiar(n6,n4) | not_familiar(n6,n4) | -person(n6) | -person(n4).  [resolve(1,e,30,a)].
% 1.49/1.77  99 familiar(n6,n4) | not_familiar(n6,n4).  [copy(98),unit_del(c,37),unit_del(d,35)].
% 1.49/1.77  100 familiar(n6,n5) | not_familiar(n6,n5) | -person(n6) | -person(n5).  [resolve(1,e,31,a)].
% 1.49/1.77  101 familiar(n6,n5) | not_familiar(n6,n5).  [copy(100),unit_del(c,37),unit_del(d,36)].
% 1.49/1.77  105 familiar(n1,n2) | -not_familiar(n2,A) | -not_familiar(A,n1).  [resolve(43,b,39,c)].
% 1.49/1.77  107 familiar(n1,n3) | -not_familiar(n3,A) | -not_familiar(A,n1).  [resolve(45,b,39,c)].
% 1.49/1.77  108 familiar(n1,n4) | not_familiar(n4,n1).  [resolve(47,b,41,a)].
% 1.49/1.77  109 familiar(n1,n4) | -not_familiar(n4,A) | -not_familiar(A,n1).  [resolve(47,b,39,c)].
% 1.49/1.77  110 familiar(n1,n5) | not_familiar(n5,n1).  [resolve(49,b,41,a)].
% 1.49/1.77  111 familiar(n1,n5) | -not_familiar(n5,A) | -not_familiar(A,n1).  [resolve(49,b,39,c)].
% 1.49/1.77  112 familiar(n1,n6) | not_familiar(n6,n1).  [resolve(51,b,41,a)].
% 1.49/1.77  113 familiar(n1,n6) | -not_familiar(n6,A) | -not_familiar(A,n1).  [resolve(51,b,39,c)].
% 1.49/1.77  116 familiar(n2,n3) | not_familiar(n3,n2).  [resolve(55,b,41,a)].
% 1.49/1.77  117 familiar(n2,n3) | -not_familiar(n3,A) | -not_familiar(A,n2).  [resolve(55,b,39,c)].
% 1.49/1.77  119 familiar(n2,n4) | -not_familiar(n4,A) | -not_familiar(A,n2).  [resolve(57,b,39,c)].
% 1.49/1.77  120 familiar(n2,n5) | not_familiar(n5,n2).  [resolve(59,b,41,a)].
% 1.49/1.77  121 familiar(n2,n5) | -not_familiar(n5,A) | -not_familiar(A,n2).  [resolve(59,b,39,c)].
% 1.49/1.77  122 familiar(n2,n6) | not_familiar(n6,n2).  [resolve(61,b,41,a)].
% 1.49/1.77  123 familiar(n2,n6) | -not_familiar(n6,A) | -not_familiar(A,n2).  [resolve(61,b,39,c)].
% 1.49/1.77  126 familiar(n3,n2) | not_familiar(n2,n3).  [resolve(65,b,41,a)].
% 1.49/1.77  127 familiar(n3,n2) | -not_familiar(n2,A) | -not_familiar(A,n3).  [resolve(65,b,39,c)].
% 1.49/1.77  128 familiar(n3,n4) | not_familiar(n4,n3).  [resolve(67,b,41,a)].
% 1.49/1.77  129 familiar(n3,n4) | -not_familiar(n4,A) | -not_familiar(A,n3).  [resolve(67,b,39,c)].
% 1.49/1.77  130 familiar(n3,n5) | not_familiar(n5,n3).  [resolve(69,b,41,a)].
% 1.49/1.77  131 familiar(n3,n5) | -not_familiar(n5,A) | -not_familiar(A,n3).  [resolve(69,b,39,c)].
% 1.49/1.77  132 familiar(n3,n6) | not_familiar(n6,n3).  [resolve(71,b,41,a)].
% 1.49/1.77  133 familiar(n3,n6) | -not_familiar(n6,A) | -not_familiar(A,n3).  [resolve(71,b,39,c)].
% 1.49/1.77  136 familiar(n4,n2) | not_familiar(n2,n4).  [resolve(75,b,41,a)].
% 1.49/1.77  138 familiar(n4,n3) | not_familiar(n3,n4).  [resolve(77,b,41,a)].
% 1.49/1.77  139 familiar(n4,n3) | -not_familiar(n3,A) | -not_familiar(A,n4).  [resolve(77,b,39,c)].
% 1.49/1.77  142 familiar(n4,n6) | not_familiar(n6,n4).  [resolve(81,b,41,a)].
% 1.49/1.77  143 familiar(n4,n6) | -not_familiar(n6,A) | -not_familiar(A,n4).  [resolve(81,b,39,c)].
% 1.49/1.77  146 familiar(n5,n2) | not_familiar(n2,n5).  [resolve(85,b,41,a)].
% 1.49/1.77  148 familiar(n5,n3) | not_familiar(n3,n5).  [resolve(87,b,41,a)].
% 1.49/1.77  150 familiar(n5,n4) | not_familiar(n4,n5).  [resolve(89,b,41,a)].
% 1.49/1.77  151 familiar(n5,n4) | -not_familiar(n4,A) | -not_familiar(A,n5).  [resolve(89,b,39,c)].
% 1.49/1.77  152 familiar(n5,n6) | not_familiar(n6,n5).  [resolve(91,b,41,a)].
% 1.49/1.77  158 familiar(n6,n3) | not_familiar(n3,n6).  [resolve(97,b,41,a)].
% 1.49/1.77  160 familiar(n6,n4) | not_familiar(n4,n6).  [resolve(99,b,41,a)].
% 1.49/1.77  162 familiar(n6,n5) | not_familiar(n5,n6).  [resolve(101,b,41,a)].
% 1.49/1.77  169 familiar(n1,n2) | -not_familiar(n6,n1) | familiar(n2,n6).  [resolve(105,b,61,b)].
% 1.49/1.77  170 familiar(n1,n2) | -not_familiar(n5,n1) | familiar(n2,n5).  [resolve(105,b,59,b)].
% 1.49/1.77  171 familiar(n1,n2) | -not_familiar(n4,n1) | familiar(n2,n4).  [resolve(105,b,57,b)].
% 1.49/1.77  175 familiar(n1,n2) | -not_familiar(n2,n4) | familiar(n1,n4).  [resolve(105,c,108,b)].
% 1.49/1.77  178 familiar(n1,n2) | -not_familiar(n2,n5) | familiar(n5,n1).  [resolve(105,c,83,b)].
% 1.49/1.77  179 familiar(n1,n2) | -not_familiar(n2,n4) | familiar(n4,n1).  [resolve(105,c,73,b)].
% 1.49/1.77  180 familiar(n1,n2) | -not_familiar(n2,n3) | familiar(n3,n1).  [resolve(105,c,63,b)].
% 1.49/1.77  185 familiar(n1,n3) | -not_familiar(n2,n1) | familiar(n2,n3).  [resolve(107,b,116,b)].
% 1.49/1.77  186 familiar(n1,n3) | -not_familiar(n6,n1) | familiar(n3,n6).  [resolve(107,b,71,b)].
% 1.49/1.77  187 familiar(n1,n3) | -not_familiar(n5,n1) | familiar(n3,n5).  [resolve(107,b,69,b)].
% 1.49/1.77  188 familiar(n1,n3) | -not_familiar(n4,n1) | familiar(n3,n4).  [resolve(107,b,67,b)].
% 1.49/1.77  191 familiar(n1,n3) | -not_familiar(n3,n5) | familiar(n1,n5).  [resolve(107,c,110,b)].
% 1.49/1.77  192 familiar(n1,n3) | -not_familiar(n3,n4) | familiar(n1,n4).  [resolve(107,c,108,b)].
% 1.49/1.77  195 familiar(n1,n3) | -not_familiar(n3,n5) | familiar(n5,n1).  [resolve(107,c,83,b)].
% 1.49/1.77  196 familiar(n1,n3) | -not_familiar(n3,n4) | familiar(n4,n1).  [resolve(107,c,73,b)].
% 1.49/1.77  205 familiar(n1,n4) | -not_familiar(n6,n1) | familiar(n4,n6).  [resolve(109,b,81,b)].
% 1.49/1.77  207 familiar(n1,n4) | -not_familiar(n3,n1) | familiar(n4,n3).  [resolve(109,b,77,b)].
% 1.49/1.77  208 familiar(n1,n4) | -not_familiar(n2,n1) | familiar(n4,n2).  [resolve(109,b,75,b)].
% 1.49/1.77  214 familiar(n1,n4) | -not_familiar(n4,n5) | familiar(n5,n1).  [resolve(109,c,83,b)].
% 1.49/1.77  225 familiar(n1,n5) | -not_familiar(n4,n1) | familiar(n5,n4).  [resolve(111,b,89,b)].
% 1.49/1.77  226 familiar(n1,n5) | -not_familiar(n3,n1) | familiar(n5,n3).  [resolve(111,b,87,b)].
% 1.49/1.77  245 familiar(n1,n6) | -not_familiar(n5,n1) | familiar(n6,n5).  [resolve(113,b,101,b)].
% 1.49/1.77  246 familiar(n1,n6) | -not_familiar(n4,n1) | familiar(n6,n4).  [resolve(113,b,99,b)].
% 1.49/1.77  247 familiar(n1,n6) | -not_familiar(n3,n1) | familiar(n6,n3).  [resolve(113,b,97,b)].
% 1.49/1.77  284 familiar(n2,n3) | -not_familiar(n6,n2) | familiar(n6,n3).  [resolve(117,b,158,b)].
% 1.49/1.77  286 familiar(n2,n3) | -not_familiar(n4,n2) | familiar(n4,n3).  [resolve(117,b,138,b)].
% 1.49/1.77  288 familiar(n2,n3) | -not_familiar(n6,n2) | familiar(n3,n6).  [resolve(117,b,71,b)].
% 1.49/1.77  289 familiar(n2,n3) | -not_familiar(n5,n2) | familiar(n3,n5).  [resolve(117,b,69,b)].
% 1.49/1.77  302 familiar(n2,n4) | -not_familiar(n5,n2) | familiar(n5,n4).  [resolve(119,b,150,b)].
% 1.49/1.77  303 familiar(n2,n4) | -not_familiar(n3,n2) | familiar(n3,n4).  [resolve(119,b,128,b)].
% 1.49/1.77  305 familiar(n2,n4) | -not_familiar(n6,n2) | familiar(n4,n6).  [resolve(119,b,81,b)].
% 1.49/1.77  316 familiar(n2,n5) | -not_familiar(n6,n2) | familiar(n6,n5).  [resolve(121,b,162,b)].
% 1.49/1.77  318 familiar(n2,n5) | -not_familiar(n3,n2) | familiar(n3,n5).  [resolve(121,b,130,b)].
% 1.49/1.77  321 familiar(n2,n5) | -not_familiar(n4,n2) | familiar(n5,n4).  [resolve(121,b,89,b)].
% 1.49/1.77  332 familiar(n2,n6) | -not_familiar(n4,n2) | familiar(n4,n6).  [resolve(123,b,142,b)].
% 1.49/1.77  333 familiar(n2,n6) | -not_familiar(n3,n2) | familiar(n3,n6).  [resolve(123,b,132,b)].
% 1.49/1.77  335 familiar(n2,n6) | -not_familiar(n5,n2) | familiar(n6,n5).  [resolve(123,b,101,b)].
% 1.49/1.77  336 familiar(n2,n6) | -not_familiar(n4,n2) | familiar(n6,n4).  [resolve(123,b,99,b)].
% 1.49/1.77  358 familiar(n3,n2) | -not_familiar(n5,n3) | familiar(n5,n2).  [resolve(127,b,146,b)].
% 1.49/1.77  368 familiar(n3,n4) | -not_familiar(n6,n3) | familiar(n6,n4).  [resolve(129,b,160,b)].
% 1.49/1.77  373 familiar(n3,n4) | -not_familiar(n5,n3) | familiar(n4,n5).  [resolve(129,b,79,b)].
% 1.49/1.77  382 familiar(n3,n5) | -not_familiar(n6,n3) | familiar(n6,n5).  [resolve(131,b,162,b)].
% 1.49/1.77  386 familiar(n3,n5) | -not_familiar(n6,n3) | familiar(n5,n6).  [resolve(131,b,91,b)].
% 1.49/1.77  387 familiar(n3,n5) | -not_familiar(n4,n3) | familiar(n5,n4).  [resolve(131,b,89,b)].
% 1.49/1.77  397 familiar(n3,n6) | -not_familiar(n4,n3) | familiar(n4,n6).  [resolve(133,b,142,b)].
% 1.49/1.77  431 familiar(n4,n3) | -not_familiar(n5,n4) | familiar(n5,n3).  [resolve(139,b,148,b)].
% 1.49/1.77  453 familiar(n4,n6) | -not_familiar(n5,n4) | familiar(n5,n6).  [resolve(143,b,152,b)].
% 1.49/1.77  493 familiar(n5,n4) | -not_familiar(n6,n5) | familiar(n6,n4).  [resolve(151,b,160,b)].
% 1.49/1.77  594 familiar(n1,n2) | familiar(n2,n6) | familiar(n1,n6).  [resolve(169,b,112,b)].
% 1.49/1.77  595 familiar(n1,n2) | familiar(n2,n6) | familiar(n6,n1).  [resolve(169,b,93,b)].
% 1.49/1.77  596 familiar(n1,n2) | familiar(n2,n5) | familiar(n1,n5).  [resolve(170,b,110,b)].
% 1.49/1.77  597 familiar(n1,n2) | familiar(n2,n5) | familiar(n5,n1).  [resolve(170,b,83,b)].
% 1.49/1.77  598 familiar(n1,n2) | familiar(n2,n4) | familiar(n1,n4).  [resolve(171,b,108,b)].
% 1.49/1.77  599 familiar(n1,n2) | familiar(n2,n4) | familiar(n4,n1).  [resolve(171,b,73,b)].
% 1.49/1.77  604 familiar(n1,n2) | familiar(n1,n4) | familiar(n4,n2).  [resolve(175,b,136,b)].
% 1.49/1.77  607 familiar(n1,n2) | familiar(n5,n1) | familiar(n5,n2).  [resolve(178,b,146,b)].
% 1.49/1.77  608 familiar(n1,n2) | familiar(n4,n1) | familiar(n4,n2).  [resolve(179,b,136,b)].
% 1.49/1.77  609 familiar(n1,n2) | familiar(n3,n1) | familiar(n3,n2).  [resolve(180,b,126,b)].
% 1.49/1.77  635 familiar(n1,n3) | familiar(n2,n3) | familiar(n2,n1).  [resolve(185,b,53,b)].
% 1.49/1.77  636 familiar(n1,n3) | familiar(n3,n6) | familiar(n1,n6).  [resolve(186,b,112,b)].
% 1.49/1.77  638 familiar(n1,n3) | familiar(n3,n5) | familiar(n1,n5).  [resolve(187,b,110,b)].
% 1.49/1.77  640 familiar(n1,n3) | familiar(n3,n4) | familiar(n1,n4).  [resolve(188,b,108,b)].
% 1.49/1.77  644 familiar(n1,n3) | familiar(n1,n5) | familiar(n5,n3).  [resolve(191,b,148,b)].
% 1.49/1.77  645 familiar(n1,n3) | familiar(n1,n4) | familiar(n4,n3).  [resolve(192,b,138,b)].
% 1.49/1.77  647 familiar(n1,n3) | familiar(n5,n1) | familiar(n5,n3).  [resolve(195,b,148,b)].
% 1.49/1.77  648 familiar(n1,n3) | familiar(n4,n1) | familiar(n4,n3).  [resolve(196,b,138,b)].
% 1.49/1.77  670 familiar(n1,n4) | familiar(n4,n6) | familiar(n1,n6).  [resolve(205,b,112,b)].
% 1.49/1.77  671 familiar(n1,n4) | familiar(n4,n6) | familiar(n6,n1).  [resolve(205,b,93,b)].
% 1.49/1.77  674 familiar(n1,n4) | familiar(n4,n3) | familiar(n3,n1).  [resolve(207,b,63,b)].
% 1.49/1.77  675 familiar(n1,n4) | familiar(n4,n2) | familiar(n2,n1).  [resolve(208,b,53,b)].
% 1.49/1.77  679 familiar(n1,n4) | familiar(n5,n1) | familiar(n5,n4).  [resolve(214,b,150,b)].
% 1.49/1.77  700 familiar(n1,n5) | familiar(n5,n4) | familiar(n4,n1).  [resolve(225,b,73,b)].
% 1.49/1.77  701 familiar(n1,n5) | familiar(n5,n3) | familiar(n3,n1).  [resolve(226,b,63,b)].
% 1.49/1.77  722 familiar(n1,n6) | familiar(n6,n5) | familiar(n5,n1).  [resolve(245,b,83,b)].
% 1.49/1.77  723 familiar(n1,n6) | familiar(n6,n4) | familiar(n4,n1).  [resolve(246,b,73,b)].
% 1.49/1.77  724 familiar(n1,n6) | familiar(n6,n3) | familiar(n3,n1).  [resolve(247,b,63,b)].
% 1.49/1.77  743 familiar(n2,n3) | familiar(n6,n3) | familiar(n6,n2).  [resolve(284,b,95,b)].
% 1.49/1.77  747 familiar(n2,n3) | familiar(n4,n3) | familiar(n4,n2).  [resolve(286,b,75,b)].
% 1.49/1.77  748 familiar(n2,n3) | familiar(n3,n6) | familiar(n2,n6).  [resolve(288,b,122,b)].
% 1.49/1.77  750 familiar(n2,n3) | familiar(n3,n5) | familiar(n2,n5).  [resolve(289,b,120,b)].
% 1.49/1.77  757 familiar(n2,n4) | familiar(n5,n4) | familiar(n5,n2).  [resolve(302,b,85,b)].
% 1.49/1.77  758 familiar(n2,n4) | familiar(n3,n4) | familiar(n3,n2).  [resolve(303,b,65,b)].
% 1.49/1.77  759 familiar(n2,n4) | familiar(n4,n6) | familiar(n2,n6).  [resolve(305,b,122,b)].
% 1.49/1.77  764 familiar(n2,n5) | familiar(n6,n5) | familiar(n2,n6).  [resolve(316,b,122,b)].
% 1.49/1.77  767 familiar(n2,n5) | familiar(n3,n5) | familiar(n3,n2).  [resolve(318,b,65,b)].
% 1.49/1.77  770 familiar(n2,n5) | familiar(n5,n4) | familiar(n4,n2).  [resolve(321,b,75,b)].
% 1.49/1.77  773 familiar(n2,n6) | familiar(n4,n6) | familiar(n4,n2).  [resolve(332,b,75,b)].
% 1.49/1.77  774 familiar(n2,n6) | familiar(n3,n6) | familiar(n3,n2).  [resolve(333,b,65,b)].
% 1.49/1.77  775 familiar(n2,n6) | familiar(n6,n5) | familiar(n5,n2).  [resolve(335,b,85,b)].
% 1.49/1.77  776 familiar(n2,n6) | familiar(n6,n4) | familiar(n4,n2).  [resolve(336,b,75,b)].
% 1.49/1.77  787 familiar(n3,n2) | familiar(n5,n2) | familiar(n5,n3).  [resolve(358,b,87,b)].
% 1.49/1.77  790 familiar(n3,n4) | familiar(n6,n4) | familiar(n3,n6).  [resolve(368,b,132,b)].
% 1.49/1.77  796 familiar(n3,n4) | familiar(n4,n5) | familiar(n3,n5).  [resolve(373,b,130,b)].
% 1.49/1.77  798 familiar(n3,n5) | familiar(n6,n5) | familiar(n3,n6).  [resolve(382,b,132,b)].
% 1.49/1.77  801 familiar(n3,n5) | familiar(n5,n6) | familiar(n3,n6).  [resolve(386,b,132,b)].
% 1.49/1.77  803 familiar(n3,n5) | familiar(n5,n4) | familiar(n4,n3).  [resolve(387,b,77,b)].
% 1.49/1.77  805 familiar(n3,n6) | familiar(n4,n6) | familiar(n4,n3).  [resolve(397,b,77,b)].
% 1.49/1.77  819 familiar(n4,n3) | familiar(n5,n3) | familiar(n5,n4).  [resolve(431,b,89,b)].
% 1.49/1.77  824 familiar(n4,n6) | familiar(n5,n6) | familiar(n5,n4).  [resolve(453,b,89,b)].
% 1.49/1.77  832 familiar(n5,n4) | familiar(n6,n4) | familiar(n5,n6).  [resolve(493,b,152,b)].
% 1.49/1.77  834 familiar(n1,n2) | familiar(n1,n6) | -familiar(n6,A) | -familiar(A,n2).  [resolve(594,b,38,c)].
% 1.49/1.77  835 familiar(n1,n2) | familiar(n2,n6) | -familiar(n1,A) | -familiar(A,n6).  [resolve(595,c,38,c)].
% 1.49/1.77  836 familiar(n1,n2) | familiar(n1,n5) | -familiar(n5,A) | -familiar(A,n2).  [resolve(596,b,38,c)].
% 1.49/1.77  837 familiar(n1,n2) | familiar(n2,n5) | -familiar(n1,A) | -familiar(A,n5).  [resolve(597,c,38,c)].
% 1.49/1.77  838 familiar(n1,n2) | familiar(n1,n4) | -familiar(n4,A) | -familiar(A,n2).  [resolve(598,b,38,c)].
% 1.49/1.77  839 familiar(n1,n2) | familiar(n2,n4) | -familiar(n1,A) | -familiar(A,n4).  [resolve(599,c,38,c)].
% 1.49/1.77  844 familiar(n1,n2) | familiar(n1,n4) | -familiar(n2,A) | -familiar(A,n4).  [resolve(604,c,38,c)].
% 1.49/1.77  850 familiar(n1,n3) | familiar(n2,n1) | -familiar(n3,A) | -familiar(A,n2).  [resolve(635,b,38,c)].
% 1.49/1.77  851 familiar(n1,n3) | familiar(n1,n6) | -familiar(n6,A) | -familiar(A,n3).  [resolve(636,b,38,c)].
% 1.49/1.77  853 familiar(n1,n3) | familiar(n1,n5) | -familiar(n5,A) | -familiar(A,n3).  [resolve(638,b,38,c)].
% 1.49/1.77  859 familiar(n1,n3) | familiar(n1,n5) | -familiar(n3,A) | -familiar(A,n5).  [resolve(644,c,38,c)].
% 1.49/1.77  860 familiar(n1,n3) | familiar(n1,n4) | -familiar(n3,A) | -familiar(A,n4).  [resolve(645,c,38,c)].
% 1.49/1.77  866 familiar(n1,n4) | familiar(n1,n6) | -familiar(n6,A) | -familiar(A,n4).  [resolve(670,b,38,c)].
% 1.49/1.77  867 familiar(n1,n4) | familiar(n4,n6) | -familiar(n1,A) | -familiar(A,n6).  [resolve(671,c,38,c)].
% 1.49/1.77  903 familiar(n2,n3) | familiar(n6,n2) | -familiar(n3,A) | -familiar(A,n6).  [resolve(743,b,38,c)].
% 1.49/1.77  907 familiar(n2,n3) | familiar(n4,n2) | -familiar(n3,A) | -familiar(A,n4).  [resolve(747,b,38,c)].
% 1.49/1.77  917 familiar(n2,n4) | familiar(n5,n2) | -familiar(n4,A) | -familiar(A,n5).  [resolve(757,b,38,c)].
% 1.49/1.77  924 familiar(n2,n5) | familiar(n2,n6) | -familiar(n5,A) | -familiar(A,n6).  [resolve(764,b,38,c)].
% 1.49/1.77  927 familiar(n2,n5) | familiar(n3,n2) | -familiar(n5,A) | -familiar(A,n3).  [resolve(767,b,38,c)].
% 1.49/1.77  934 familiar(n2,n6) | familiar(n3,n2) | -familiar(n6,A) | -familiar(A,n3).  [resolve(774,b,38,c)].
% 1.49/1.77  950 familiar(n3,n4) | familiar(n3,n6) | -familiar(n4,A) | -familiar(A,n6).  [resolve(790,b,38,c)].
% 1.49/1.77  958 familiar(n3,n5) | familiar(n3,n6) | -familiar(n5,A) | -familiar(A,n6).  [resolve(798,b,38,c)].
% 1.49/1.77  1015 familiar(n1,n2) | familiar(n1,n6) | -familiar(n3,n2) | familiar(n3,n1).  [resolve(834,c,724,b),merge(d)].
% 1.49/1.77  1016 familiar(n1,n2) | familiar(n1,n6) | -familiar(n4,n2) | familiar(n4,n1).  [resolve(834,c,723,b),merge(d)].
% 1.49/1.77  1017 familiar(n1,n2) | familiar(n1,n6) | -familiar(n5,n2) | familiar(n5,n1).  [resolve(834,c,722,b),merge(d)].
% 1.49/1.77  1048 familiar(n1,n2) | familiar(n2,n6) | -familiar(n1,n3) | familiar(n3,n2).  [resolve(835,d,774,b),merge(d)].
% 1.49/1.77  1067 familiar(n1,n2) | familiar(n1,n5) | -familiar(n3,n2) | familiar(n3,n1).  [resolve(836,c,701,b),merge(d)].
% 1.49/1.77  1068 familiar(n1,n2) | familiar(n1,n5) | -familiar(n4,n2) | familiar(n4,n1).  [resolve(836,c,700,b),merge(d)].
% 1.49/1.77  1104 familiar(n1,n2) | familiar(n2,n5) | -familiar(n1,n3) | familiar(n3,n2).  [resolve(837,d,767,b),merge(d)].
% 1.49/1.77  1117 familiar(n1,n2) | familiar(n1,n4) | -familiar(n3,n2) | familiar(n3,n1).  [resolve(838,c,674,b),merge(d)].
% 1.49/1.77  1154 familiar(n1,n2) | familiar(n2,n4) | -familiar(n1,n3) | familiar(n3,n2).  [resolve(839,d,758,b),merge(d)].
% 1.49/1.77  1317 familiar(n1,n3) | familiar(n2,n1) | -familiar(n4,n2) | familiar(n1,n4).  [resolve(850,c,640,b),merge(d)].
% 1.49/1.77  1354 familiar(n1,n3) | familiar(n1,n6) | -familiar(n4,n3) | familiar(n4,n1).  [resolve(851,c,723,b),merge(d)].
% 1.49/1.77  1355 familiar(n1,n3) | familiar(n1,n6) | -familiar(n5,n3) | familiar(n5,n1).  [resolve(851,c,722,b),merge(d)].
% 1.49/1.77  1402 familiar(n1,n3) | familiar(n1,n5) | -familiar(n4,n3) | familiar(n4,n1).  [resolve(853,c,700,b),merge(d)].
% 1.49/1.77  1678 familiar(n1,n4) | familiar(n1,n6) | -familiar(n5,n4) | familiar(n5,n1).  [resolve(866,c,722,b),merge(d)].
% 1.49/1.77  1695 familiar(n1,n4) | familiar(n4,n6) | -familiar(n1,n5) | familiar(n5,n4).  [resolve(867,d,824,b),merge(d)].
% 1.49/1.77  2464 familiar(n2,n3) | familiar(n4,n2) | -familiar(n5,n4) | familiar(n2,n5).  [resolve(907,c,750,b),merge(d)].
% 1.49/1.77  2465 familiar(n2,n3) | familiar(n4,n2) | -familiar(n6,n4) | familiar(n2,n6).  [resolve(907,c,748,b),merge(d)].
% 1.49/1.77  2595 familiar(n2,n4) | familiar(n5,n2) | -familiar(n6,n5) | familiar(n2,n6).  [resolve(917,c,759,b),merge(d)].
% 1.49/1.77  2681 familiar(n2,n5) | familiar(n2,n6) | -familiar(n4,n6) | familiar(n4,n2).  [resolve(924,c,770,b),merge(d)].
% 1.49/1.77  2816 familiar(n2,n6) | familiar(n3,n2) | -familiar(n5,n3) | familiar(n5,n2).  [resolve(934,c,775,b),merge(d)].
% 1.49/1.77  2933 familiar(n3,n4) | familiar(n3,n6) | -familiar(n5,n6) | familiar(n3,n5).  [resolve(950,c,796,b),merge(d)].
% 1.49/1.77  2979 familiar(n3,n5) | familiar(n3,n6) | -familiar(n4,n6) | familiar(n4,n3).  [resolve(958,c,803,b),merge(d)].
% 1.49/1.77  3064 familiar(n1,n2) | familiar(n1,n6) | familiar(n3,n1).  [resolve(1015,c,609,c),merge(d),merge(e)].
% 1.49/1.77  3071 familiar(n1,n2) | familiar(n1,n6) | familiar(n1,n3).  [resolve(3064,c,40,a)].
% 1.49/1.77  3105 familiar(n1,n2) | familiar(n1,n3) | familiar(n6,n1).  [resolve(3071,b,40,a)].
% 1.49/1.77  3106 familiar(n1,n2) | familiar(n1,n3) | -familiar(n6,A) | -familiar(A,n1).  [resolve(3071,b,38,c)].
% 1.49/1.77  3109 familiar(n1,n2) | familiar(n1,n3) | -familiar(n1,A) | -familiar(A,n6).  [resolve(3105,c,38,c)].
% 1.49/1.77  3119 familiar(n1,n2) | familiar(n1,n6) | familiar(n4,n1).  [resolve(1016,c,608,c),merge(d),merge(e)].
% 1.49/1.77  3126 familiar(n1,n2) | familiar(n1,n6) | familiar(n1,n4).  [resolve(3119,c,40,a)].
% 1.49/1.77  3156 familiar(n1,n2) | familiar(n1,n4) | -familiar(n6,A) | -familiar(A,n1).  [resolve(3126,b,38,c)].
% 1.49/1.77  3173 familiar(n1,n2) | familiar(n1,n6) | familiar(n5,n1).  [resolve(1017,c,607,c),merge(d),merge(e)].
% 1.49/1.77  3176 familiar(n1,n2) | familiar(n1,n6) | familiar(n1,n5).  [resolve(3173,c,40,a)].
% 1.49/1.77  3201 familiar(n1,n2) | familiar(n1,n5) | familiar(n6,n1).  [resolve(3176,b,40,a)].
% 1.49/1.77  3202 familiar(n1,n2) | familiar(n1,n5) | -familiar(n6,A) | -familiar(A,n1).  [resolve(3176,b,38,c)].
% 1.49/1.77  3205 familiar(n1,n2) | familiar(n1,n5) | -familiar(n1,A) | -familiar(A,n6).  [resolve(3201,c,38,c)].
% 1.49/1.77  3213 familiar(n1,n2) | familiar(n1,n5) | familiar(n3,n1).  [resolve(1067,c,609,c),merge(d),merge(e)].
% 1.49/1.77  3226 familiar(n1,n2) | familiar(n1,n5) | familiar(n1,n3).  [resolve(3213,c,40,a)].
% 1.49/1.77  3253 familiar(n1,n2) | familiar(n1,n3) | -familiar(n5,A) | -familiar(A,n1).  [resolve(3226,b,38,c)].
% 1.49/1.77  3265 familiar(n1,n2) | familiar(n1,n5) | familiar(n4,n1).  [resolve(1068,c,608,c),merge(d),merge(e)].
% 1.49/1.77  3278 familiar(n1,n2) | familiar(n1,n5) | familiar(n1,n4).  [resolve(3265,c,40,a)].
% 1.49/1.77  3299 familiar(n1,n2) | familiar(n1,n4) | familiar(n5,n1).  [resolve(3278,b,40,a)].
% 1.49/1.77  3308 familiar(n1,n2) | familiar(n1,n4) | -familiar(n1,A) | -familiar(A,n5).  [resolve(3299,c,38,c)].
% 1.49/1.77  3316 familiar(n1,n2) | familiar(n1,n4) | familiar(n3,n1).  [resolve(1117,c,609,c),merge(d),merge(e)].
% 1.49/1.77  3327 familiar(n1,n2) | familiar(n1,n4) | familiar(n1,n3).  [resolve(3316,c,40,a)].
% 1.49/1.77  3349 familiar(n1,n2) | familiar(n1,n3) | familiar(n4,n1).  [resolve(3327,b,40,a)].
% 1.49/1.77  3383 familiar(n1,n3) | familiar(n2,n1) | familiar(n1,n4).  [resolve(1317,c,675,b),merge(d),merge(e)].
% 1.49/1.77  3394 familiar(n1,n3) | familiar(n1,n4) | -familiar(n1,A) | -familiar(A,n2).  [resolve(3383,b,38,c)].
% 1.49/1.77  3426 familiar(n1,n3) | familiar(n1,n6) | familiar(n4,n1).  [resolve(1354,c,648,c),merge(d),merge(e)].
% 1.49/1.77  3433 familiar(n1,n3) | familiar(n1,n6) | familiar(n1,n4).  [resolve(3426,c,40,a)].
% 1.49/1.77  3457 familiar(n1,n3) | familiar(n1,n4) | familiar(n6,n1).  [resolve(3433,b,40,a)].
% 1.49/1.77  3461 familiar(n1,n3) | familiar(n1,n4) | -familiar(n1,A) | -familiar(A,n6).  [resolve(3457,c,38,c)].
% 1.49/1.77  3469 familiar(n1,n3) | familiar(n1,n6) | familiar(n5,n1).  [resolve(1355,c,647,c),merge(d),merge(e)].
% 1.49/1.77  3472 familiar(n1,n3) | familiar(n1,n6) | familiar(n1,n5).  [resolve(3469,c,40,a)].
% 1.49/1.77  3473 familiar(n1,n3) | familiar(n1,n6) | -familiar(n1,A) | -familiar(A,n5).  [resolve(3469,c,38,c)].
% 1.49/1.77  3492 familiar(n1,n3) | familiar(n1,n5) | familiar(n6,n1).  [resolve(3472,b,40,a)].
% 1.49/1.77  3496 familiar(n1,n3) | familiar(n1,n5) | -familiar(n1,A) | -familiar(A,n6).  [resolve(3492,c,38,c)].
% 1.49/1.77  3510 familiar(n1,n3) | familiar(n1,n5) | familiar(n4,n1).  [resolve(1402,c,648,c),merge(d),merge(e)].
% 1.49/1.77  3519 familiar(n1,n3) | familiar(n1,n5) | familiar(n1,n4).  [resolve(3510,c,40,a)].
% 1.49/1.77  3666 familiar(n1,n4) | familiar(n1,n6) | familiar(n5,n1).  [resolve(1678,c,679,c),merge(d),merge(e)].
% 1.49/1.77  3667 familiar(n1,n4) | familiar(n1,n6) | familiar(n2,n5) | familiar(n3,n2) | -familiar(n1,n3).  [resolve(3666,c,927,c)].
% 1.49/1.77  3670 familiar(n1,n4) | familiar(n1,n6) | -familiar(n1,A) | -familiar(A,n5).  [resolve(3666,c,38,c)].
% 1.49/1.77  3691 familiar(n1,n4) | familiar(n4,n6) | familiar(n5,n4) | familiar(n1,n2).  [resolve(1695,c,3278,b),merge(e)].
% 1.49/1.77  3987 familiar(n2,n3) | familiar(n4,n2) | familiar(n2,n5).  [resolve(2464,c,770,b),merge(d),merge(e)].
% 1.49/1.77  4002 familiar(n2,n3) | familiar(n2,n5) | -familiar(n2,A) | -familiar(A,n4).  [resolve(3987,b,38,c)].
% 1.49/1.77  4007 familiar(n2,n3) | familiar(n4,n2) | familiar(n2,n6).  [resolve(2465,c,776,b),merge(d),merge(e)].
% 1.49/1.77  4017 familiar(n2,n3) | familiar(n2,n6) | -familiar(n2,A) | -familiar(A,n4).  [resolve(4007,b,38,c)].
% 1.49/1.77  4115 familiar(n2,n4) | familiar(n5,n2) | familiar(n2,n6).  [resolve(2595,c,775,b),merge(d),merge(e)].
% 1.49/1.77  4145 familiar(n2,n5) | familiar(n2,n6) | familiar(n4,n2).  [resolve(2681,c,773,b),merge(d),merge(e)].
% 1.49/1.77  4149 familiar(n2,n5) | familiar(n2,n6) | -familiar(n2,A) | -familiar(A,n4).  [resolve(4145,c,38,c)].
% 1.49/1.77  4210 familiar(n2,n6) | familiar(n3,n2) | familiar(n5,n2).  [resolve(2816,c,787,c),merge(d),merge(e)].
% 1.49/1.77  4249 familiar(n3,n4) | familiar(n3,n6) | familiar(n3,n5).  [resolve(2933,c,801,b),merge(d),merge(e)].
% 1.49/1.77  4266 familiar(n3,n4) | familiar(n3,n5) | familiar(n6,n3).  [resolve(4249,b,40,a)].
% 1.49/1.77  4314 familiar(n3,n5) | familiar(n3,n6) | familiar(n4,n3).  [resolve(2979,c,805,b),merge(d),merge(e)].
% 1.49/1.77  4387 familiar(n1,n2) | familiar(n1,n3) | -familiar(n6,n4).  [resolve(3106,d,3349,c),merge(d),merge(e)].
% 1.49/1.77  4390 familiar(n1,n2) | familiar(n1,n3) | familiar(n5,n4) | familiar(n5,n6).  [resolve(4387,c,832,b)].
% 1.49/1.77  4401 familiar(n1,n2) | familiar(n1,n3) | -familiar(n5,n6).  [resolve(3109,c,3226,b),merge(d),merge(e)].
% 1.49/1.77  4410 familiar(n1,n2) | familiar(n1,n4) | -familiar(n6,n3).  [resolve(3156,d,3316,c),merge(d),merge(e)].
% 1.49/1.77  4412 familiar(n1,n2) | familiar(n1,n4) | familiar(n3,n4) | familiar(n3,n5).  [resolve(4410,c,4266,c)].
% 1.49/1.77  4429 familiar(n1,n2) | familiar(n1,n5) | -familiar(n6,n4).  [resolve(3202,d,3265,c),merge(d),merge(e)].
% 1.49/1.77  4431 familiar(n1,n2) | familiar(n1,n5) | familiar(n5,n4) | familiar(n5,n6).  [resolve(4429,c,832,b)].
% 1.49/1.77  4460 familiar(n1,n2) | familiar(n1,n3) | -familiar(n5,n4).  [resolve(3253,d,3349,c),merge(d),merge(e)].
% 1.49/1.77  4594 familiar(n1,n3) | familiar(n1,n4) | -familiar(n5,n2).  [resolve(3394,c,3519,b),merge(d),merge(e)].
% 1.49/1.77  4604 familiar(n1,n3) | familiar(n1,n4) | familiar(n2,n6) | familiar(n3,n2).  [resolve(4594,c,4210,c)].
% 1.49/1.77  4606 familiar(n1,n3) | familiar(n1,n4) | familiar(n2,n4) | familiar(n2,n6).  [resolve(4594,c,4115,b)].
% 1.49/1.77  5028 familiar(n1,n2) | familiar(n1,n3) | familiar(n5,n4).  [resolve(4390,d,4401,c),merge(d),merge(e)].
% 1.49/1.77  5029 familiar(n1,n2) | familiar(n1,n3).  [resolve(5028,c,4460,c),merge(c),merge(d)].
% 1.49/1.77  5034 familiar(n1,n2) | familiar(n1,n4) | -familiar(n3,n5).  [resolve(5029,b,3308,c),merge(b)].
% 1.49/1.77  5036 familiar(n1,n2) | familiar(n1,n5) | -familiar(n3,n6).  [resolve(5029,b,3205,c),merge(b)].
% 1.49/1.77  5047 familiar(n1,n2) | familiar(n2,n4) | familiar(n3,n2).  [resolve(5029,b,1154,c),merge(b)].
% 1.49/1.77  5049 familiar(n1,n2) | familiar(n2,n5) | familiar(n3,n2).  [resolve(5029,b,1104,c),merge(b)].
% 1.49/1.77  5051 familiar(n1,n2) | familiar(n2,n6) | familiar(n3,n2).  [resolve(5029,b,1048,c),merge(b)].
% 1.49/1.77  5061 familiar(n1,n2) | familiar(n3,n1).  [resolve(5029,b,40,a)].
% 1.49/1.77  5076 familiar(n1,n2) | -familiar(n1,A) | -familiar(A,n3).  [resolve(5061,b,38,c)].
% 1.49/1.77  5239 familiar(n1,n2) | familiar(n1,n4) | familiar(n3,n4).  [resolve(4412,d,5034,c),merge(d),merge(e)].
% 1.49/1.77  5244 familiar(n1,n2) | familiar(n1,n4) | familiar(n4,n3).  [resolve(5239,c,40,a)].
% 1.49/1.77  5247 familiar(n1,n2) | familiar(n1,n4) | -familiar(n3,n2).  [resolve(5244,c,838,c),merge(c),merge(d)].
% 1.49/1.77  5249 familiar(n1,n2) | familiar(n1,n4) | familiar(n2,n6).  [resolve(5247,c,5051,c),merge(c)].
% 1.49/1.77  5250 familiar(n1,n2) | familiar(n1,n4) | familiar(n2,n5).  [resolve(5247,c,5049,c),merge(c)].
% 1.49/1.77  5259 familiar(n1,n2) | familiar(n1,n4) | familiar(n6,n2).  [resolve(5249,c,40,a)].
% 1.49/1.77  5264 familiar(n1,n2) | familiar(n1,n4) | -familiar(n5,n4).  [resolve(5250,c,844,c),merge(c),merge(d)].
% 1.49/1.77  5269 familiar(n1,n2) | familiar(n1,n4) | -familiar(n4,n6).  [resolve(5259,c,838,d),merge(c),merge(d)].
% 1.49/1.77  5271 familiar(n1,n2) | familiar(n1,n4) | familiar(n4,n6).  [resolve(5264,c,3691,c),merge(c),merge(e)].
% 1.49/1.77  5281 familiar(n1,n2) | familiar(n1,n4).  [resolve(5271,c,5269,c),merge(c),merge(d)].
% 1.49/1.77  5282 familiar(n1,n2) | -familiar(n4,n3).  [resolve(5281,b,5076,b),merge(b)].
% 1.49/1.77  5309 familiar(n1,n2) | familiar(n4,n1).  [resolve(5281,b,40,a)].
% 1.49/1.77  5311 familiar(n1,n2) | familiar(n3,n5) | familiar(n3,n6).  [resolve(5282,b,4314,c)].
% 1.49/1.77  5326 familiar(n1,n2) | -familiar(n1,A) | -familiar(A,n4).  [resolve(5309,b,38,c)].
% 1.49/1.77  5397 familiar(n1,n2) | familiar(n3,n5) | familiar(n1,n5).  [resolve(5311,c,5036,c),merge(c)].
% 1.49/1.77  5460 familiar(n1,n2) | familiar(n1,n5) | familiar(n5,n3).  [resolve(5397,b,40,a)].
% 1.49/1.77  5483 familiar(n1,n2) | familiar(n1,n5) | -familiar(n3,n2).  [resolve(5460,c,836,c),merge(c),merge(d)].
% 1.49/1.77  5488 familiar(n1,n2) | familiar(n1,n5) | familiar(n2,n6).  [resolve(5483,c,5051,c),merge(c)].
% 1.49/1.77  5489 familiar(n1,n2) | familiar(n1,n5) | familiar(n2,n4).  [resolve(5483,c,5047,c),merge(c)].
% 1.49/1.77  5504 familiar(n1,n2) | familiar(n1,n5) | familiar(n6,n2).  [resolve(5488,c,40,a)].
% 1.49/1.77  5510 familiar(n1,n2) | familiar(n1,n5) | familiar(n4,n2).  [resolve(5489,c,40,a)].
% 1.49/1.77  5513 familiar(n1,n2) | familiar(n1,n5) | -familiar(n5,n6).  [resolve(5504,c,836,d),merge(c),merge(d)].
% 1.49/1.77  5516 familiar(n1,n2) | familiar(n1,n5) | -familiar(n5,n4).  [resolve(5510,c,836,d),merge(c),merge(d)].
% 1.49/1.77  5520 familiar(n1,n2) | familiar(n1,n5) | familiar(n5,n4).  [resolve(4431,d,5513,c),merge(d),merge(e)].
% 1.49/1.77  5522 familiar(n1,n2) | familiar(n1,n5).  [resolve(5520,c,5516,c),merge(c),merge(d)].
% 1.49/1.77  5524 familiar(n1,n2) | -familiar(n5,n4).  [resolve(5522,b,5326,b),merge(b)].
% 1.49/1.77  5525 familiar(n1,n2) | -familiar(n5,n3).  [resolve(5522,b,5076,b),merge(b)].
% 1.49/1.77  5573 familiar(n1,n2) | familiar(n4,n3) | familiar(n5,n3).  [resolve(5524,b,819,c)].
% 1.49/1.77  5606 familiar(n1,n2) | familiar(n4,n3).  [resolve(5573,c,5525,b),merge(c)].
% 1.49/1.77  5612 familiar(n1,n2).  [resolve(5606,b,5282,b),merge(b)].
% 1.49/1.77  5655 familiar(n1,n4) | familiar(n1,n6) | -familiar(n2,n5).  [resolve(5612,a,3670,c)].
% 1.49/1.77  5661 familiar(n1,n3) | familiar(n1,n5) | -familiar(n2,n6).  [resolve(5612,a,3496,c)].
% 1.49/1.77  5662 familiar(n1,n3) | familiar(n1,n6) | -familiar(n2,n5).  [resolve(5612,a,3473,c)].
% 1.49/1.77  5663 familiar(n1,n3) | familiar(n1,n4) | -familiar(n2,n6).  [resolve(5612,a,3461,c)].
% 1.49/1.77  5677 familiar(n2,n1).  [resolve(5612,a,40,a)].
% 1.49/1.77  5678 -familiar(n2,A) | -familiar(A,n1).  [resolve(5612,a,38,c)].
% 1.49/1.77  5683 familiar(n2,n5) | familiar(n2,n6) | -familiar(n1,n4).  [resolve(5677,a,4149,c)].
% 1.49/1.77  5689 familiar(n2,n3) | familiar(n2,n6) | -familiar(n1,n4).  [resolve(5677,a,4017,c)].
% 1.49/1.77  5690 familiar(n2,n3) | familiar(n2,n5) | -familiar(n1,n4).  [resolve(5677,a,4002,c)].
% 1.49/1.77  5707 -familiar(n1,A) | -familiar(A,n2).  [resolve(5677,a,38,c)].
% 1.49/1.77  5744 familiar(n1,n3) | familiar(n1,n4) | familiar(n2,n4).  [resolve(4606,d,5663,c),merge(d),merge(e)].
% 1.49/1.77  5748 familiar(n1,n3) | familiar(n1,n4) | -familiar(n3,n2).  [resolve(5744,c,860,d),merge(c),merge(d)].
% 1.49/1.77  5751 familiar(n1,n3) | familiar(n1,n4) | familiar(n2,n6).  [resolve(5748,c,4604,d),merge(c),merge(d)].
% 1.49/1.77  5758 familiar(n1,n3) | familiar(n1,n4).  [resolve(5751,c,5663,c),merge(c),merge(d)].
% 1.49/1.77  5762 familiar(n1,n3) | familiar(n2,n3) | familiar(n2,n5).  [resolve(5758,b,5690,c)].
% 1.49/1.77  5763 familiar(n1,n3) | familiar(n2,n3) | familiar(n2,n6).  [resolve(5758,b,5689,c)].
% 1.49/1.77  5764 familiar(n1,n3) | familiar(n2,n5) | familiar(n2,n6).  [resolve(5758,b,5683,c)].
% 1.49/1.77  5835 familiar(n1,n3) | familiar(n2,n3) | familiar(n1,n6).  [resolve(5762,c,5662,c),merge(c)].
% 1.49/1.77  5851 familiar(n1,n3) | familiar(n2,n3) | familiar(n1,n5).  [resolve(5763,c,5661,c),merge(c)].
% 1.49/1.77  5865 familiar(n1,n3) | familiar(n2,n5) | familiar(n1,n5).  [resolve(5764,c,5661,c),merge(c)].
% 1.49/1.77  5874 familiar(n1,n3) | familiar(n2,n5) | familiar(n6,n2).  [resolve(5764,c,40,a)].
% 1.49/1.77  5983 familiar(n1,n3) | familiar(n1,n6) | -familiar(n6,n2).  [resolve(5835,b,851,d),merge(c),merge(d)].
% 1.49/1.77  6014 familiar(n1,n3) | familiar(n1,n5) | familiar(n3,n2).  [resolve(5851,b,40,a)].
% 1.49/1.77  6044 familiar(n1,n3) | familiar(n1,n5) | -familiar(n3,n2).  [resolve(5865,b,859,d),merge(c),merge(d)].
% 1.49/1.77  6047 familiar(n1,n3) | familiar(n2,n5) | -familiar(n1,n6).  [resolve(5874,c,5707,b)].
% 1.49/1.77  6071 familiar(n1,n3) | familiar(n1,n6) | familiar(n2,n5).  [resolve(5983,c,5874,c),merge(c)].
% 1.49/1.77  6099 familiar(n1,n3) | familiar(n1,n5).  [resolve(6044,c,6014,c),merge(c),merge(d)].
% 1.49/1.77  6124 familiar(n1,n3) | familiar(n5,n1).  [resolve(6099,b,40,a)].
% 1.49/1.77  6137 familiar(n1,n3) | -familiar(n2,n5).  [resolve(6124,b,5678,b)].
% 1.49/1.77  6153 familiar(n1,n3) | familiar(n1,n6).  [resolve(6071,c,6137,b),merge(c)].
% 1.49/1.77  6154 familiar(n1,n3) | familiar(n2,n5).  [resolve(6153,b,6047,c),merge(b)].
% 1.49/1.77  6178 familiar(n1,n3).  [resolve(6154,b,6137,b),merge(b)].
% 1.49/1.77  6188 familiar(n1,n4) | familiar(n1,n6) | familiar(n2,n5) | familiar(n3,n2).  [back_unit_del(3667),unit_del(e,6178)].
% 1.49/1.77  6201 -familiar(n3,n2).  [resolve(6178,a,5707,a)].
% 1.49/1.77  6219 familiar(n3,n1).  [resolve(6178,a,40,a)].
% 1.49/1.77  6227 familiar(n1,n4) | familiar(n1,n6) | familiar(n2,n5).  [back_unit_del(6188),unit_del(d,6201)].
% 1.49/1.77  6458 -familiar(n2,n3).  [resolve(6219,a,5678,b)].
% 1.49/1.77  6469 familiar(n4,n2) | -familiar(n1,n4).  [resolve(6219,a,907,c),unit_del(a,6458)].
% 1.49/1.77  6473 familiar(n6,n2) | -familiar(n1,n6).  [resolve(6219,a,903,c),unit_del(a,6458)].
% 1.49/1.77  6602 familiar(n1,n4) | familiar(n1,n6).  [resolve(6227,c,5655,c),merge(c),merge(d)].
% 1.49/1.77  6607 familiar(n1,n4) | familiar(n6,n2).  [resolve(6602,b,6473,b)].
% 1.49/1.77  6609 familiar(n1,n4) | -familiar(n6,n2).  [resolve(6602,b,5707,a)].
% 1.49/1.77  6663 familiar(n1,n4).  [resolve(6609,b,6607,b),merge(b)].
% 1.49/1.77  6665 familiar(n4,n2).  [back_unit_del(6469),unit_del(b,6663)].
% 1.49/1.77  6697 $F.  [resolve(6663,a,5707,a),unit_del(a,6665)].
% 1.49/1.77  
% 1.49/1.77  % SZS output end Refutation
% 1.49/1.77  ============================== end of proof ==========================
% 1.49/1.77  
% 1.49/1.77  ============================== STATISTICS ============================
% 1.49/1.77  
% 1.49/1.77  Given=2494. Generated=64661. Kept=6635. proofs=1.
% 1.49/1.77  Usable=1785. Sos=2236. Demods=0. Limbo=1, Disabled=2684. Hints=0.
% 1.49/1.77  Megabytes=4.13.
% 1.49/1.77  User_CPU=0.79, System_CPU=0.04, Wall_clock=1.
% 1.49/1.77  
% 1.49/1.77  ============================== end of statistics =====================
% 1.49/1.77  
% 1.49/1.77  ============================== end of search =========================
% 1.49/1.77  
% 1.49/1.77  THEOREM PROVED
% 1.49/1.77  % SZS status Unsatisfiable
% 1.49/1.77  
% 1.49/1.77  Exiting with 1 proof.
% 1.49/1.77  
% 1.49/1.77  Process 28737 exit (max_proofs) Sat May 28 23:39:49 2022
% 1.49/1.77  Prover9 interrupted
%------------------------------------------------------------------------------