TSTP Solution File: PUZ026-1 by Faust---1.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Faust---1.0
% Problem  : PUZ026-1 : TPTP v3.4.2. Released v1.0.0.
% Transfm  : none
% Format   : tptp
% Command  : faust %s

% Computer : art03.cs.miami.edu
% Model    : i686 i686
% CPU      : Intel(R) Pentium(R) 4 CPU 2.80GHz @ 2793MHz
% Memory   : 1003MB
% OS       : Linux 2.6.17-1.2142_FC4
% CPULimit : 600s
% DateTime : Wed May  6 15:11:30 EDT 2009

% Result   : Unsatisfiable 0.4s
% Output   : Refutation 0.4s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   11
%            Number of leaves      :   17
% Syntax   : Number of formulae    :   67 (  15 unt;   0 def)
%            Number of atoms       :  145 (   0 equ)
%            Maximal formula atoms :    4 (   2 avg)
%            Number of connectives :  157 (  79   ~;  78   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    7 (   3 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :    3 (   2 usr;   1 prp; 0-3 aty)
%            Number of functors    :    8 (   8 usr;   3 con; 0-2 aty)
%            Number of variables   :   59 (  13 sgn  25   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Faust---1.0 format not known, defaulting to TPTP
fof(prove_one_of_each,plain,
    ! [A,B,C] :
      ( ~ a_truth(liar(A))
      | ~ a_truth(normal(B))
      | ~ a_truth(truthteller(C)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164786656,plain,
    ( ~ a_truth(liar(A))
    | ~ a_truth(normal(B))
    | ~ a_truth(truthteller(C)) ),
    inference(rewrite,[status(thm)],[prove_one_of_each]),
    [] ).

fof(liars_and_normal_lie,plain,
    ! [A,B] :
      ( a_truth(A)
      | ~ a_truth(says(B,A))
      | a_truth(liar(B))
      | a_truth(normal(B)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164703120,plain,
    ( a_truth(A)
    | ~ a_truth(says(B,A))
    | a_truth(liar(B))
    | a_truth(normal(B)) ),
    inference(rewrite,[status(thm)],[liars_and_normal_lie]),
    [] ).

fof(a_says_a_normal,plain,
    a_truth(says(a,normal(a))),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164768688,plain,
    a_truth(says(a,normal(a))),
    inference(rewrite,[status(thm)],[a_says_a_normal]),
    [] ).

cnf(172790720,plain,
    ( a_truth(normal(a))
    | a_truth(liar(a)) ),
    inference(resolution,[status(thm)],[164703120,164768688]),
    [] ).

cnf(175481408,plain,
    ( ~ a_truth(liar(A))
    | ~ a_truth(truthteller(B))
    | a_truth(liar(a)) ),
    inference(resolution,[status(thm)],[164786656,172790720]),
    [] ).

fof(not_two_liars1,plain,
    ! [A,B,C] :
      ( ~ people(A,B,C)
      | ~ a_truth(liar(A))
      | ~ a_truth(liar(B)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164735920,plain,
    ( ~ people(A,B,C)
    | ~ a_truth(liar(A))
    | ~ a_truth(liar(B)) ),
    inference(rewrite,[status(thm)],[not_two_liars1]),
    [] ).

fof(a_b_c_are_people,plain,
    people(a,b,c),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164753160,plain,
    people(a,b,c),
    inference(rewrite,[status(thm)],[a_b_c_are_people]),
    [] ).

cnf(172652008,plain,
    ( ~ a_truth(liar(a))
    | ~ a_truth(liar(b)) ),
    inference(resolution,[status(thm)],[164735920,164753160]),
    [] ).

fof(not_normal_and_not_normal,plain,
    ! [A] :
      ( ~ a_truth(not_normal(A))
      | ~ a_truth(normal(A)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164708664,plain,
    ( ~ a_truth(not_normal(A))
    | ~ a_truth(normal(A)) ),
    inference(rewrite,[status(thm)],[not_normal_and_not_normal]),
    [] ).

fof(person_is_one_type,plain,
    ! [A] :
      ( a_truth(truthteller(A))
      | a_truth(liar(A))
      | a_truth(normal(A)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164653280,plain,
    ( a_truth(truthteller(A))
    | a_truth(liar(A))
    | a_truth(normal(A)) ),
    inference(rewrite,[status(thm)],[person_is_one_type]),
    [] ).

cnf(172852688,plain,
    ( ~ a_truth(not_normal(A))
    | a_truth(truthteller(A))
    | a_truth(liar(A)) ),
    inference(resolution,[status(thm)],[164708664,164653280]),
    [] ).

fof(truthtellers_tell_truth,plain,
    ! [A,B] :
      ( ~ a_truth(truthteller(A))
      | ~ a_truth(says(A,B))
      | a_truth(B) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164675032,plain,
    ( ~ a_truth(truthteller(A))
    | ~ a_truth(says(A,B))
    | a_truth(B) ),
    inference(rewrite,[status(thm)],[truthtellers_tell_truth]),
    [] ).

fof(b_says_a_normal,plain,
    a_truth(says(b,normal(a))),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164772744,plain,
    a_truth(says(b,normal(a))),
    inference(rewrite,[status(thm)],[b_says_a_normal]),
    [] ).

cnf(172858848,plain,
    ( ~ a_truth(truthteller(b))
    | a_truth(normal(a)) ),
    inference(resolution,[status(thm)],[164675032,164772744]),
    [] ).

fof(not_liar_and_normal,plain,
    ! [A] :
      ( ~ a_truth(liar(A))
      | ~ a_truth(normal(A)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164669528,plain,
    ( ~ a_truth(liar(A))
    | ~ a_truth(normal(A)) ),
    inference(rewrite,[status(thm)],[not_liar_and_normal]),
    [] ).

cnf(173131664,plain,
    ( ~ a_truth(truthteller(b))
    | ~ a_truth(liar(a)) ),
    inference(resolution,[status(thm)],[172858848,164669528]),
    [] ).

cnf(173479280,plain,
    ( ~ a_truth(not_normal(b))
    | ~ a_truth(liar(a)) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[172652008,172852688,173131664]),
    [] ).

fof(normal_or_not_normal,plain,
    ! [A] :
      ( a_truth(not_normal(A))
      | a_truth(normal(A)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164647520,plain,
    ( a_truth(not_normal(A))
    | a_truth(normal(A)) ),
    inference(rewrite,[status(thm)],[normal_or_not_normal]),
    [] ).

cnf(173534392,plain,
    ( ~ a_truth(liar(a))
    | a_truth(normal(b)) ),
    inference(resolution,[status(thm)],[173479280,164647520]),
    [] ).

cnf(175533080,plain,
    ( ~ a_truth(liar(A))
    | ~ a_truth(truthteller(B)) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[175481408,164786656,173534392]),
    [] ).

cnf(175596776,plain,
    ( ~ a_truth(truthteller(A))
    | a_truth(normal(a)) ),
    inference(resolution,[status(thm)],[175533080,172790720]),
    [] ).

fof(c_says_c_not_normal,plain,
    a_truth(says(c,not_normal(c))),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164776640,plain,
    a_truth(says(c,not_normal(c))),
    inference(rewrite,[status(thm)],[c_says_c_not_normal]),
    [] ).

cnf(172872496,plain,
    ( ~ a_truth(truthteller(c))
    | a_truth(not_normal(c)) ),
    inference(resolution,[status(thm)],[164675032,164776640]),
    [] ).

cnf(173190672,plain,
    ( a_truth(not_normal(c))
    | a_truth(liar(c))
    | a_truth(normal(c)) ),
    inference(resolution,[status(thm)],[172872496,164653280]),
    [] ).

cnf(173511824,plain,
    ( a_truth(truthteller(c))
    | a_truth(liar(c))
    | a_truth(normal(c)) ),
    inference(resolution,[status(thm)],[172852688,173190672]),
    [] ).

cnf(172825472,plain,
    ( ~ a_truth(liar(A))
    | a_truth(not_normal(A)) ),
    inference(resolution,[status(thm)],[164669528,164647520]),
    [] ).

cnf(173861112,plain,
    ( a_truth(truthteller(c))
    | a_truth(normal(c))
    | a_truth(not_normal(c)) ),
    inference(resolution,[status(thm)],[173511824,172825472]),
    [] ).

cnf(173921240,plain,
    ( a_truth(not_normal(c))
    | ~ a_truth(liar(c)) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[172872496,173861112,164669528]),
    [] ).

fof(liars_lie,plain,
    ! [A,B] :
      ( ~ a_truth(liar(A))
      | ~ a_truth(says(A,B))
      | ~ a_truth(B) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164684952,plain,
    ( ~ a_truth(liar(A))
    | ~ a_truth(says(A,B))
    | ~ a_truth(B) ),
    inference(rewrite,[status(thm)],[liars_lie]),
    [] ).

cnf(174148992,plain,
    ~ a_truth(liar(c)),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[173921240,164684952,164776640]),
    [] ).

cnf(174514608,plain,
    ( a_truth(truthteller(c))
    | a_truth(normal(c)) ),
    inference(resolution,[status(thm)],[174148992,164653280]),
    [] ).

cnf(175697112,plain,
    ( a_truth(normal(a))
    | a_truth(normal(c)) ),
    inference(resolution,[status(thm)],[175596776,174514608]),
    [] ).

fof(not_two_normal1,plain,
    ! [A,B,C] :
      ( ~ people(A,B,C)
      | ~ a_truth(normal(A))
      | ~ a_truth(normal(B)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164745080,plain,
    ( ~ people(A,B,C)
    | ~ a_truth(normal(A))
    | ~ a_truth(normal(B)) ),
    inference(rewrite,[status(thm)],[not_two_normal1]),
    [] ).

fof(c_b_a_are_people,plain,
    people(c,b,a),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164765072,plain,
    people(c,b,a),
    inference(rewrite,[status(thm)],[c_b_a_are_people]),
    [] ).

cnf(172742928,plain,
    ( ~ a_truth(normal(c))
    | ~ a_truth(normal(b)) ),
    inference(resolution,[status(thm)],[164745080,164765072]),
    [] ).

cnf(173641504,plain,
    ( a_truth(normal(b))
    | a_truth(normal(a)) ),
    inference(resolution,[status(thm)],[173534392,172790720]),
    [] ).

cnf(181205656,plain,
    a_truth(normal(a)),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[175697112,172742928,173641504]),
    [] ).

fof(not_two_normal2,plain,
    ! [A,B,C] :
      ( ~ people(A,B,C)
      | ~ a_truth(normal(A))
      | ~ a_truth(normal(C)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164749080,plain,
    ( ~ people(A,B,C)
    | ~ a_truth(normal(A))
    | ~ a_truth(normal(C)) ),
    inference(rewrite,[status(thm)],[not_two_normal2]),
    [] ).

cnf(172714288,plain,
    ( ~ a_truth(normal(a))
    | ~ a_truth(normal(c)) ),
    inference(resolution,[status(thm)],[164749080,164753160]),
    [] ).

cnf(173590144,plain,
    ( ~ a_truth(liar(b))
    | a_truth(normal(a)) ),
    inference(resolution,[status(thm)],[172652008,172790720]),
    [] ).

cnf(174124256,plain,
    ~ a_truth(liar(b)),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[173590144,164684952,164772744]),
    [] ).

cnf(174478248,plain,
    ( a_truth(truthteller(b))
    | a_truth(normal(b)) ),
    inference(resolution,[status(thm)],[174124256,164653280]),
    [] ).

cnf(175606840,plain,
    ( ~ a_truth(liar(A))
    | a_truth(normal(b)) ),
    inference(resolution,[status(thm)],[175533080,174478248]),
    [] ).

cnf(175838744,plain,
    ( a_truth(normal(b))
    | a_truth(truthteller(A))
    | a_truth(normal(A)) ),
    inference(resolution,[status(thm)],[175606840,164653280]),
    [] ).

fof(not_two_truthtellers1,plain,
    ! [A,B,C] :
      ( ~ people(A,B,C)
      | ~ a_truth(truthteller(A))
      | ~ a_truth(truthteller(B)) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),
    [] ).

cnf(164726480,plain,
    ( ~ people(A,B,C)
    | ~ a_truth(truthteller(A))
    | ~ a_truth(truthteller(B)) ),
    inference(rewrite,[status(thm)],[not_two_truthtellers1]),
    [] ).

cnf(172725648,plain,
    ( ~ a_truth(truthteller(c))
    | ~ a_truth(truthteller(b)) ),
    inference(resolution,[status(thm)],[164726480,164765072]),
    [] ).

cnf(177787064,plain,
    ( a_truth(normal(b))
    | a_truth(normal(c)) ),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[175838744,172725648,175838744]),
    [] ).

cnf(172698184,plain,
    ( ~ a_truth(normal(a))
    | ~ a_truth(normal(b)) ),
    inference(resolution,[status(thm)],[164745080,164753160]),
    [] ).

cnf(180786024,plain,
    a_truth(normal(c)),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[177787064,172698184,175697112]),
    [] ).

cnf(contradiction,plain,
    $false,
    inference(forward_subsumption_resolution__resolution,[status(thm)],[181205656,172714288,180786024]),
    [] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% Proof found in: 0 seconds
% START OF PROOF SEQUENCE
% fof(prove_one_of_each,plain,(~a_truth(liar(A))|~a_truth(normal(B))|~a_truth(truthteller(C))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164786656,plain,(~a_truth(liar(A))|~a_truth(normal(B))|~a_truth(truthteller(C))),inference(rewrite,[status(thm)],[prove_one_of_each]),[]).
% 
% fof(liars_and_normal_lie,plain,(a_truth(A)|~a_truth(says(B,A))|a_truth(liar(B))|a_truth(normal(B))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164703120,plain,(a_truth(A)|~a_truth(says(B,A))|a_truth(liar(B))|a_truth(normal(B))),inference(rewrite,[status(thm)],[liars_and_normal_lie]),[]).
% 
% fof(a_says_a_normal,plain,(a_truth(says(a,normal(a)))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164768688,plain,(a_truth(says(a,normal(a)))),inference(rewrite,[status(thm)],[a_says_a_normal]),[]).
% 
% cnf(172790720,plain,(a_truth(normal(a))|a_truth(liar(a))),inference(resolution,[status(thm)],[164703120,164768688]),[]).
% 
% cnf(175481408,plain,(~a_truth(liar(A))|~a_truth(truthteller(B))|a_truth(liar(a))),inference(resolution,[status(thm)],[164786656,172790720]),[]).
% 
% fof(not_two_liars1,plain,(~people(A,B,C)|~a_truth(liar(A))|~a_truth(liar(B))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164735920,plain,(~people(A,B,C)|~a_truth(liar(A))|~a_truth(liar(B))),inference(rewrite,[status(thm)],[not_two_liars1]),[]).
% 
% fof(a_b_c_are_people,plain,(people(a,b,c)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164753160,plain,(people(a,b,c)),inference(rewrite,[status(thm)],[a_b_c_are_people]),[]).
% 
% cnf(172652008,plain,(~a_truth(liar(a))|~a_truth(liar(b))),inference(resolution,[status(thm)],[164735920,164753160]),[]).
% 
% fof(not_normal_and_not_normal,plain,(~a_truth(not_normal(A))|~a_truth(normal(A))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164708664,plain,(~a_truth(not_normal(A))|~a_truth(normal(A))),inference(rewrite,[status(thm)],[not_normal_and_not_normal]),[]).
% 
% fof(person_is_one_type,plain,(a_truth(truthteller(A))|a_truth(liar(A))|a_truth(normal(A))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164653280,plain,(a_truth(truthteller(A))|a_truth(liar(A))|a_truth(normal(A))),inference(rewrite,[status(thm)],[person_is_one_type]),[]).
% 
% cnf(172852688,plain,(~a_truth(not_normal(A))|a_truth(truthteller(A))|a_truth(liar(A))),inference(resolution,[status(thm)],[164708664,164653280]),[]).
% 
% fof(truthtellers_tell_truth,plain,(~a_truth(truthteller(A))|~a_truth(says(A,B))|a_truth(B)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164675032,plain,(~a_truth(truthteller(A))|~a_truth(says(A,B))|a_truth(B)),inference(rewrite,[status(thm)],[truthtellers_tell_truth]),[]).
% 
% fof(b_says_a_normal,plain,(a_truth(says(b,normal(a)))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164772744,plain,(a_truth(says(b,normal(a)))),inference(rewrite,[status(thm)],[b_says_a_normal]),[]).
% 
% cnf(172858848,plain,(~a_truth(truthteller(b))|a_truth(normal(a))),inference(resolution,[status(thm)],[164675032,164772744]),[]).
% 
% fof(not_liar_and_normal,plain,(~a_truth(liar(A))|~a_truth(normal(A))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164669528,plain,(~a_truth(liar(A))|~a_truth(normal(A))),inference(rewrite,[status(thm)],[not_liar_and_normal]),[]).
% 
% cnf(173131664,plain,(~a_truth(truthteller(b))|~a_truth(liar(a))),inference(resolution,[status(thm)],[172858848,164669528]),[]).
% 
% cnf(173479280,plain,(~a_truth(not_normal(b))|~a_truth(liar(a))),inference(forward_subsumption_resolution__resolution,[status(thm)],[172652008,172852688,173131664]),[]).
% 
% fof(normal_or_not_normal,plain,(a_truth(not_normal(A))|a_truth(normal(A))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164647520,plain,(a_truth(not_normal(A))|a_truth(normal(A))),inference(rewrite,[status(thm)],[normal_or_not_normal]),[]).
% 
% cnf(173534392,plain,(~a_truth(liar(a))|a_truth(normal(b))),inference(resolution,[status(thm)],[173479280,164647520]),[]).
% 
% cnf(175533080,plain,(~a_truth(liar(A))|~a_truth(truthteller(B))),inference(forward_subsumption_resolution__resolution,[status(thm)],[175481408,164786656,173534392]),[]).
% 
% cnf(175596776,plain,(~a_truth(truthteller(A))|a_truth(normal(a))),inference(resolution,[status(thm)],[175533080,172790720]),[]).
% 
% fof(c_says_c_not_normal,plain,(a_truth(says(c,not_normal(c)))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164776640,plain,(a_truth(says(c,not_normal(c)))),inference(rewrite,[status(thm)],[c_says_c_not_normal]),[]).
% 
% cnf(172872496,plain,(~a_truth(truthteller(c))|a_truth(not_normal(c))),inference(resolution,[status(thm)],[164675032,164776640]),[]).
% 
% cnf(173190672,plain,(a_truth(not_normal(c))|a_truth(liar(c))|a_truth(normal(c))),inference(resolution,[status(thm)],[172872496,164653280]),[]).
% 
% cnf(173511824,plain,(a_truth(truthteller(c))|a_truth(liar(c))|a_truth(normal(c))),inference(resolution,[status(thm)],[172852688,173190672]),[]).
% 
% cnf(172825472,plain,(~a_truth(liar(A))|a_truth(not_normal(A))),inference(resolution,[status(thm)],[164669528,164647520]),[]).
% 
% cnf(173861112,plain,(a_truth(truthteller(c))|a_truth(normal(c))|a_truth(not_normal(c))),inference(resolution,[status(thm)],[173511824,172825472]),[]).
% 
% cnf(173921240,plain,(a_truth(not_normal(c))|~a_truth(liar(c))),inference(forward_subsumption_resolution__resolution,[status(thm)],[172872496,173861112,164669528]),[]).
% 
% fof(liars_lie,plain,(~a_truth(liar(A))|~a_truth(says(A,B))|~a_truth(B)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164684952,plain,(~a_truth(liar(A))|~a_truth(says(A,B))|~a_truth(B)),inference(rewrite,[status(thm)],[liars_lie]),[]).
% 
% cnf(174148992,plain,(~a_truth(liar(c))),inference(forward_subsumption_resolution__resolution,[status(thm)],[173921240,164684952,164776640]),[]).
% 
% cnf(174514608,plain,(a_truth(truthteller(c))|a_truth(normal(c))),inference(resolution,[status(thm)],[174148992,164653280]),[]).
% 
% cnf(175697112,plain,(a_truth(normal(a))|a_truth(normal(c))),inference(resolution,[status(thm)],[175596776,174514608]),[]).
% 
% fof(not_two_normal1,plain,(~people(A,B,C)|~a_truth(normal(A))|~a_truth(normal(B))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164745080,plain,(~people(A,B,C)|~a_truth(normal(A))|~a_truth(normal(B))),inference(rewrite,[status(thm)],[not_two_normal1]),[]).
% 
% fof(c_b_a_are_people,plain,(people(c,b,a)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164765072,plain,(people(c,b,a)),inference(rewrite,[status(thm)],[c_b_a_are_people]),[]).
% 
% cnf(172742928,plain,(~a_truth(normal(c))|~a_truth(normal(b))),inference(resolution,[status(thm)],[164745080,164765072]),[]).
% 
% cnf(173641504,plain,(a_truth(normal(b))|a_truth(normal(a))),inference(resolution,[status(thm)],[173534392,172790720]),[]).
% 
% cnf(181205656,plain,(a_truth(normal(a))),inference(forward_subsumption_resolution__resolution,[status(thm)],[175697112,172742928,173641504]),[]).
% 
% fof(not_two_normal2,plain,(~people(A,B,C)|~a_truth(normal(A))|~a_truth(normal(C))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164749080,plain,(~people(A,B,C)|~a_truth(normal(A))|~a_truth(normal(C))),inference(rewrite,[status(thm)],[not_two_normal2]),[]).
% 
% cnf(172714288,plain,(~a_truth(normal(a))|~a_truth(normal(c))),inference(resolution,[status(thm)],[164749080,164753160]),[]).
% 
% cnf(173590144,plain,(~a_truth(liar(b))|a_truth(normal(a))),inference(resolution,[status(thm)],[172652008,172790720]),[]).
% 
% cnf(174124256,plain,(~a_truth(liar(b))),inference(forward_subsumption_resolution__resolution,[status(thm)],[173590144,164684952,164772744]),[]).
% 
% cnf(174478248,plain,(a_truth(truthteller(b))|a_truth(normal(b))),inference(resolution,[status(thm)],[174124256,164653280]),[]).
% 
% cnf(175606840,plain,(~a_truth(liar(A))|a_truth(normal(b))),inference(resolution,[status(thm)],[175533080,174478248]),[]).
% 
% cnf(175838744,plain,(a_truth(normal(b))|a_truth(truthteller(A))|a_truth(normal(A))),inference(resolution,[status(thm)],[175606840,164653280]),[]).
% 
% fof(not_two_truthtellers1,plain,(~people(A,B,C)|~a_truth(truthteller(A))|~a_truth(truthteller(B))),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/PUZ/PUZ026-1.tptp',unknown),[]).
% 
% cnf(164726480,plain,(~people(A,B,C)|~a_truth(truthteller(A))|~a_truth(truthteller(B))),inference(rewrite,[status(thm)],[not_two_truthtellers1]),[]).
% 
% cnf(172725648,plain,(~a_truth(truthteller(c))|~a_truth(truthteller(b))),inference(resolution,[status(thm)],[164726480,164765072]),[]).
% 
% cnf(177787064,plain,(a_truth(normal(b))|a_truth(normal(c))),inference(forward_subsumption_resolution__resolution,[status(thm)],[175838744,172725648,175838744]),[]).
% 
% cnf(172698184,plain,(~a_truth(normal(a))|~a_truth(normal(b))),inference(resolution,[status(thm)],[164745080,164753160]),[]).
% 
% cnf(180786024,plain,(a_truth(normal(c))),inference(forward_subsumption_resolution__resolution,[status(thm)],[177787064,172698184,175697112]),[]).
% 
% cnf(contradiction,plain,$false,inference(forward_subsumption_resolution__resolution,[status(thm)],[181205656,172714288,180786024]),[]).
% 
% END OF PROOF SEQUENCE
% 
%------------------------------------------------------------------------------