%------------------------------------------------------------------------------
% File : CSE_E---1.7
% Problem : PUZ035-2 : TPTP v9.2.1. Released v2.0.0.
% 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 : n031.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 05:02:43 PM UTC 2026
% Result : Unsatisfiable 1.25s 1.73s
% Output : CNFRefutation 1.25s
% Verified :
% SZS Type : Refutation
% Derivation depth : 5
% Number of leaves : 5
% Syntax : Number of clauses : 15 ( 6 unt; 6 nHn; 15 RR)
% Number of literals : 28 ( 0 equ; 11 neg)
% Maximal clause size : 3 ( 1 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 4 ( 3 usr; 1 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 6 con; 0-0 aty)
% Number of variables : 11 ( 9 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(everyone_a_knight_or_knave,axiom,
( isa(X1,knight)
| isa(X1,knave)
| ~ person(X1) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',everyone_a_knight_or_knave) ).
cnf(asked_person,axiom,
person(asked),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',asked_person) ).
cnf(prove_answer,negated_conjecture,
( ~ response(X1)
| ~ isa(asked,X2)
| ~ isa(other,X3) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_answer) ).
cnf(other_person,axiom,
person(other),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',other_person) ).
cnf(two_answers,axiom,
( response(yes)
| response(no) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',two_answers) ).
cnf(c_0_5,axiom,
( isa(X1,knight)
| isa(X1,knave)
| ~ person(X1) ),
everyone_a_knight_or_knave ).
cnf(c_0_6,axiom,
person(asked),
asked_person ).
cnf(c_0_7,negated_conjecture,
( ~ response(X1)
| ~ isa(asked,X2)
| ~ isa(other,X3) ),
prove_answer ).
cnf(c_0_8,plain,
( isa(asked,knave)
| isa(asked,knight) ),
inference(spm,[status(thm)],[c_0_5,c_0_6]) ).
cnf(c_0_9,axiom,
person(other),
other_person ).
cnf(c_0_10,negated_conjecture,
( ~ response(X1)
| ~ isa(other,X2) ),
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_7,c_0_8]),c_0_7]) ).
cnf(c_0_11,plain,
( isa(other,knave)
| isa(other,knight) ),
inference(spm,[status(thm)],[c_0_5,c_0_9]) ).
cnf(c_0_12,axiom,
( response(yes)
| response(no) ),
two_answers ).
cnf(c_0_13,negated_conjecture,
~ response(X1),
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_10,c_0_11]),c_0_10]) ).
cnf(c_0_14,plain,
$false,
inference(sr,[status(thm)],[inference(sr,[status(thm)],[c_0_12,c_0_13]),c_0_13]),
[proof] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.13 % Problem : PUZ035-2 : TPTP v9.2.1. Released v2.0.0.
% 0.00/0.13 % 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 : n031.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 01:35:38 EDT 2026
% 0.17/0.34 % CPUTime :
% 0.19/0.36 % start to proof: theBenchmark
% 1.25/1.73 % Version : CSE_E---1.7
% 1.25/1.73 % Problem : theBenchmark.p
% 1.25/1.73 % SZS status Unsatisfiable for theBenchmark.p
% 1.25/1.73 % SZS output start CNFRefutation
% See solution above
% 1.25/1.73 % Total time : 1.368s
%------------------------------------------------------------------------------