%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : PUZ004-1 : TPTP v9.3.1. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% Computer : n026.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Fri Sep 25 02:32:39 PM UTC 2026
% Result : Unsatisfiable 1.10s 1.26s
% Output : CNFRefutation 1.10s
% Verified :
% SZS Type : Refutation
% Derivation depth : 2
% Number of leaves : 11
% Syntax : Number of formulae : 23 ( 5 unt; 0 def)
% Number of atoms : 41 ( 0 equ)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 38 ( 20 ~; 18 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 3 ( 2 avg)
% Maximal term depth : 0 ( 0 avg)
% Number of types : 0 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 11 ( 10 usr; 11 prp; 0-0 aty)
% Number of functors : 0 ( 0 usr; 0 con; --- aty)
% Number of variables : 0 ( 0 sgn 0 !; 0 ?; 0 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
( on_blue_paper
| ~ dated ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',dated_on_blue_paper) ).
fof(f3,axiom,
( ~ in_black_ink
| in_third_person ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',black_ink_in_third_person) ).
fof(f4,axiom,
( ~ filed
| ~ can_be_read ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',not_filed_if_read) ).
fof(f5,axiom,
( dated
| ~ on_one_sheet ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',dated_if_on_one_sheet) ).
fof(f6,axiom,
( in_black_ink
| crossed ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',not_crossed_in_black_ink) ).
fof(f7,axiom,
( begins_with_dear_sir
| ~ by_brown ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',brown_starts_with_sir) ).
fof(f8,axiom,
( filed
| ~ on_blue_paper ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',filed_if_on_blue_paper) ).
fof(f9,axiom,
( ~ crossed
| on_one_sheet ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',on_one_sheet_if_crossed) ).
fof(f10,axiom,
( ~ in_third_person
| ~ begins_with_dear_sir ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',no_dear_sirs_in_third_person) ).
fof(f11,axiom,
by_brown,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',letter_by_brown) ).
fof(f12,negated_conjecture,
can_be_read,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_it_cannot_be_read) ).
tcf(c_61,plain,
( on_blue_paper
| ~ dated ),
inference(cnf_transformation,[],[f1]) ).
tcf(c_63,plain,
( in_third_person
| ~ in_black_ink ),
inference(cnf_transformation,[],[f3]) ).
tcf(c_64,plain,
( ~ filed
| ~ can_be_read ),
inference(cnf_transformation,[],[f4]) ).
tcf(c_65,plain,
( dated
| ~ on_one_sheet ),
inference(cnf_transformation,[],[f5]) ).
tcf(c_66,plain,
( crossed
| in_black_ink ),
inference(cnf_transformation,[],[f6]) ).
tcf(c_67,plain,
( begins_with_dear_sir
| ~ by_brown ),
inference(cnf_transformation,[],[f7]) ).
tcf(c_68,plain,
( filed
| ~ on_blue_paper ),
inference(cnf_transformation,[],[f8]) ).
tcf(c_69,plain,
( on_one_sheet
| ~ crossed ),
inference(cnf_transformation,[],[f9]) ).
tcf(c_70,plain,
( ~ begins_with_dear_sir
| ~ in_third_person ),
inference(cnf_transformation,[],[f10]) ).
tcf(c_71,plain,
by_brown,
inference(cnf_transformation,[],[f11]) ).
tcf(c_72,negated_conjecture,
can_be_read,
inference(cnf_transformation,[],[f12]) ).
tcf(c_73,plain,
$false,
inference(prop_impl_just,[status(thm)],[c_64,c_70,c_61,c_63,c_65,c_67,c_68,c_69,c_66,c_71,c_72]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : PUZ004-1 : TPTP v9.3.1. Released v1.0.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.10/0.35 % Computer : n026.cluster.edu
% 0.10/0.35 % Model : x86_64 x86_64
% 0.10/0.35 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.35 % Memory : 8046.5625MB
% 0.10/0.35 % OS : Linux 6.8.0-71-generic
% 0.10/0.35 % CPULimit : 300
% 0.10/0.35 % WCLimit : 300
% 0.10/0.35 % DateTime : Thu Sep 24 06:38:53 UTC 2026
% 0.10/0.36 % CPUTime :
% 0.10/0.36 Running run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.14/0.39 Running first-order theorem proving
% 0.14/0.39 Running: /export/starexec/sandbox/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.14/0.40
% 0.14/0.40 % ======== iProver multi-core TPTP/SMT =========
% 0.14/0.40
% 0.14/0.40 % Detected problem language: tptp
% 0.14/0.41 % Proving...
% 1.10/1.26 % SZS status Started for theBenchmark.p
% 1.10/1.26 % SZS status Unsatisfiable for theBenchmark.p
% 1.10/1.26
% 1.10/1.26 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 1.10/1.26
% 1.10/1.26 % ------ iProver source info
% 1.10/1.26
% 1.10/1.26 % git: date: 2026-07-19 20:42:38 +0200
% 1.10/1.26 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 1.10/1.26 % git: non_committed_changes: false
% 1.10/1.26
% 1.10/1.26 % ------ Parsing...% successful
% 1.10/1.26
% 1.10/1.26
% 1.10/1.26 % ------ Clausification by vclausify_rel & Parsing by iProver...% ------ preprocesses with Option_epr_non_horn_non_eq
% 1.10/1.26 %
% 1.10/1.26
% 1.10/1.26 % ------ Preprocessing...%
% 1.10/1.26
% 1.10/1.26 % SZS status Unsatisfiable for theBenchmark.p
% 1.10/1.26
% 1.10/1.26 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 1.10/1.26
% 1.10/1.26
%------------------------------------------------------------------------------