%------------------------------------------------------------------------------
% File     : iProver---3.8
% Problem  : PUZ020-1 : TPTP v8.1.2. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_iprover %s %d THM

% Computer : n012.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Thu Aug 31 13:19:31 EDT 2023

% Result   : Unsatisfiable 0.60s 1.15s
% Output   : CNFRefutation 0.60s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    2
%            Number of leaves      :    5
% Syntax   : Number of clauses     :    7 (   3 unt;   1 nHn;   7 RR)
%            Number of literals    :   13 (   0 equ;   6 neg)
%            Maximal clause size   :    3 (   1 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of predicates  :    4 (   3 usr;   1 prp; 0-1 aty)
%            Number of functors    :    3 (   3 usr;   2 con; 0-1 aty)
%            Number of variables   :    1 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(c_55,plain,
    ( ~ a_truth(statement_by(X0))
    | ~ person(X0)
    | knight(X0) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',knights_make_true_statements) ).

cnf(c_59,plain,
    person(husband),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',husband) ).

cnf(c_65,plain,
    ( a_truth(statement_by(husband))
    | knight(wife) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',knight_wife_or_truthful_husband) ).

cnf(c_66,plain,
    ( ~ knight(wife)
    | a_truth(statement_by(husband)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',knight_wife_means_truthful_husband) ).

cnf(c_67,negated_conjecture,
    ~ knight(husband),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_knight_husband) ).

cnf(c_72,plain,
    ( ~ a_truth(statement_by(husband))
    | ~ person(husband)
    | knight(husband) ),
    inference(instantiation,[status(thm)],[c_55]) ).

cnf(c_73,plain,
    $false,
    inference(prop_impl_just,[status(thm)],[c_72,c_66,c_65,c_67,c_59]) ).


%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem  : PUZ020-1 : TPTP v8.1.2. Released v1.0.0.
% 0.00/0.13  % Command  : run_iprover %s %d THM
% 0.15/0.34  % Computer : n012.cluster.edu
% 0.15/0.34  % Model    : x86_64 x86_64
% 0.15/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.34  % Memory   : 8042.1875MB
% 0.15/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.15/0.34  % CPULimit : 300
% 0.15/0.34  % WCLimit  : 300
% 0.15/0.34  % DateTime : Sat Aug 26 22:32:10 EDT 2023
% 0.15/0.34  % CPUTime  : 
% 0.19/0.46  Running first-order theorem proving
% 0.19/0.46  Running: /export/starexec/sandbox2/solver/bin/run_problem --schedule fof_schedule --no_cores 8 /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.60/1.15  % SZS status Started for theBenchmark.p
% 0.60/1.15  % SZS status Unsatisfiable for theBenchmark.p
% 0.60/1.15  
% 0.60/1.15  %---------------- iProver v3.8 (pre SMT-COMP 2023/CASC 2023) ----------------%
% 0.60/1.15  
% 0.60/1.15  ------  iProver source info
% 0.60/1.15  
% 0.60/1.15  git: date: 2023-05-31 18:12:56 +0000
% 0.60/1.15  git: sha1: 8abddc1f627fd3ce0bcb8b4cbf113b3cc443d7b6
% 0.60/1.15  git: non_committed_changes: false
% 0.60/1.15  git: last_make_outside_of_git: false
% 0.60/1.15  
% 0.60/1.15  ------ Parsing...successful
% 0.60/1.15  
% 0.60/1.15  
% 0.60/1.15  
% 0.60/1.15  ------ Preprocessing...
% 0.60/1.15  
% 0.60/1.15  % SZS status Unsatisfiable for theBenchmark.p
% 0.60/1.15  
% 0.60/1.15  % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 0.60/1.15  
% 0.60/1.15  
%------------------------------------------------------------------------------