%------------------------------------------------------------------------------
% File : CSE_E---1.7
% Problem : PUZ004-1 : TPTP v9.2.1. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : /export/starexec/sandbox2/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox2/solver/bin/cse --final-prover /export/starexec/sandbox2/solver/bin/eprover --proof-time %d --global-time-limit %d
% Computer : n008.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 : Tue May 5 05:02:04 PM UTC 2026
% Result : Unsatisfiable 0.27s 1.64s
% Output : CNFRefutation 0.27s
% Verified :
% SZS Type : Refutation
% Derivation depth : 7
% Number of leaves : 11
% Syntax : Number of clauses : 31 ( 13 unt; 2 nHn; 31 RR)
% Number of literals : 49 ( 0 equ; 25 neg)
% Maximal clause size : 2 ( 1 avg)
% Maximal term depth : 0 ( 0 avg)
% 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)
% Comments :
%------------------------------------------------------------------------------
cnf(brown_starts_with_sir,axiom,
( begins_with_dear_sir
| ~ by_brown ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',brown_starts_with_sir) ).
cnf(letter_by_brown,hypothesis,
by_brown,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',letter_by_brown) ).
cnf(no_dear_sirs_in_third_person,axiom,
( ~ begins_with_dear_sir
| ~ in_third_person ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',no_dear_sirs_in_third_person) ).
cnf(black_ink_in_third_person,axiom,
( in_third_person
| ~ in_black_ink ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',black_ink_in_third_person) ).
cnf(not_filed_if_read,axiom,
( ~ can_be_read
| ~ filed ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',not_filed_if_read) ).
cnf(prove_it_cannot_be_read,negated_conjecture,
can_be_read,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_it_cannot_be_read) ).
cnf(not_crossed_in_black_ink,axiom,
( crossed
| in_black_ink ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',not_crossed_in_black_ink) ).
cnf(filed_if_on_blue_paper,axiom,
( filed
| ~ on_blue_paper ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',filed_if_on_blue_paper) ).
cnf(on_one_sheet_if_crossed,axiom,
( on_one_sheet
| ~ crossed ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',on_one_sheet_if_crossed) ).
cnf(dated_on_blue_paper,axiom,
( on_blue_paper
| ~ dated ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dated_on_blue_paper) ).
cnf(dated_if_on_one_sheet,axiom,
( dated
| ~ on_one_sheet ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dated_if_on_one_sheet) ).
cnf(c_0_11,axiom,
( begins_with_dear_sir
| ~ by_brown ),
brown_starts_with_sir ).
cnf(c_0_12,hypothesis,
by_brown,
letter_by_brown ).
cnf(c_0_13,axiom,
( ~ begins_with_dear_sir
| ~ in_third_person ),
no_dear_sirs_in_third_person ).
cnf(c_0_14,plain,
begins_with_dear_sir,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_11,c_0_12])]) ).
cnf(c_0_15,axiom,
( in_third_person
| ~ in_black_ink ),
black_ink_in_third_person ).
cnf(c_0_16,plain,
~ in_third_person,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_13,c_0_14])]) ).
cnf(c_0_17,axiom,
( ~ can_be_read
| ~ filed ),
not_filed_if_read ).
cnf(c_0_18,negated_conjecture,
can_be_read,
prove_it_cannot_be_read ).
cnf(c_0_19,axiom,
( crossed
| in_black_ink ),
not_crossed_in_black_ink ).
cnf(c_0_20,plain,
~ in_black_ink,
inference(sr,[status(thm)],[c_0_15,c_0_16]) ).
cnf(c_0_21,axiom,
( filed
| ~ on_blue_paper ),
filed_if_on_blue_paper ).
cnf(c_0_22,plain,
~ filed,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_17,c_0_18])]) ).
cnf(c_0_23,axiom,
( on_one_sheet
| ~ crossed ),
on_one_sheet_if_crossed ).
cnf(c_0_24,plain,
crossed,
inference(sr,[status(thm)],[c_0_19,c_0_20]) ).
cnf(c_0_25,axiom,
( on_blue_paper
| ~ dated ),
dated_on_blue_paper ).
cnf(c_0_26,plain,
~ on_blue_paper,
inference(sr,[status(thm)],[c_0_21,c_0_22]) ).
cnf(c_0_27,axiom,
( dated
| ~ on_one_sheet ),
dated_if_on_one_sheet ).
cnf(c_0_28,plain,
on_one_sheet,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_23,c_0_24])]) ).
cnf(c_0_29,plain,
~ dated,
inference(sr,[status(thm)],[c_0_25,c_0_26]) ).
cnf(c_0_30,plain,
$false,
inference(sr,[status(thm)],[inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_27,c_0_28])]),c_0_29]),
[proof] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.12/0.13 % Problem : PUZ004-1 : TPTP v9.2.1. Released v1.0.0.
% 0.12/0.13 % Command : /export/starexec/sandbox2/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox2/solver/bin/cse --final-prover /export/starexec/sandbox2/solver/bin/eprover --proof-time %d --global-time-limit %d
% 0.17/0.34 % Computer : n008.cluster.edu
% 0.17/0.34 % Model : x86_64 x86_64
% 0.17/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.17/0.34 % Memory : 8042.1875MB
% 0.17/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.17/0.34 % CPULimit : 300
% 0.17/0.34 % WCLimit : 300
% 0.17/0.34 % DateTime : Tue May 5 01:32:58 EDT 2026
% 0.17/0.35 % CPUTime :
% 0.21/0.36 % start to proof: theBenchmark
% 0.27/1.64 % Version : CSE_E---1.7
% 0.27/1.64 % Problem : theBenchmark.p
% 0.27/1.64 % SZS status Unsatisfiable for theBenchmark.p
% 0.27/1.64 % SZS output start CNFRefutation
% See solution above
% 0.27/1.64 % Total time : 1.275s
%------------------------------------------------------------------------------