%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : PUZ035-1 : TPTP v9.3.1. Released v2.0.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% Computer : n011.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 02:32:47 PM UTC 2026
% Result : Unsatisfiable 0.88s 1.09s
% Output : CNFRefutation 0.88s
% Verified :
% SZS Type : Refutation
% Derivation depth : 4
% Number of leaves : 5
% Syntax : Number of formulae : 23 ( 5 unt; 0 def)
% Number of atoms : 46 ( 0 equ)
% Maximal formula atoms : 3 ( 2 avg)
% Number of connectives : 49 ( 26 ~; 23 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 3 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 7 ( 6 usr; 4 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 6 con; 0-0 aty)
% Number of variables : 11 ( 0 sgn 11 !; 0 ?; 7 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X0] :
( isa(X0,knave)
| isa(X0,knight)
| ~ person(X0) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',everyone_a_knight_or_knave) ).
fof(f12,axiom,
( response(no)
| response(yes) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',two_answers) ).
fof(f13,axiom,
person(asked),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',asked_person) ).
fof(f14,axiom,
person(other),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',other_person) ).
fof(f15,negated_conjecture,
! [X2,X0,X1] :
( ~ isa(other,X2)
| ~ isa(asked,X1)
| ~ response(X0) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_answer) ).
tcf(c_64,plain,
! [X0: $i] :
( isa(X0,knave)
| isa(X0,knight)
| ~ person(X0) ),
inference(cnf_transformation,[],[f1]) ).
tcf(c_75,plain,
( response(no)
| response(yes) ),
inference(cnf_transformation,[],[f12]) ).
tcf(c_76,plain,
person(asked),
inference(cnf_transformation,[],[f13]) ).
tcf(c_77,plain,
person(other),
inference(cnf_transformation,[],[f14]) ).
tcf(c_78,negated_conjecture,
! [X0: $i,X1: $i,X2: $i] :
( ~ response(X2)
| ~ isa(other,X1)
| ~ isa(asked,X0) ),
inference(cnf_transformation,[],[f15]) ).
tcf(c_166,plain,
( isa(asked,knave)
| isa(asked,knight) ),
inference(resolution,[status(thm)],[c_64,c_76]) ).
tcf(c_173,plain,
( isa(other,knave)
| isa(other,knight) ),
inference(resolution,[status(thm)],[c_64,c_77]) ).
tcf(c_305,negated_conjecture,
! [X0: $i] :
( ~ iPr_def_11
| ~ isa(other,X0) ),
inference(splitting,[splitting(split),new_symbols(definition,[iPr_def_11])],[c_78]) ).
tcf(c_306,negated_conjecture,
! [X0: $i] :
( ~ iPr_def_12
| ~ response(X0) ),
inference(splitting,[splitting(split),new_symbols(definition,[iPr_def_12])],[c_78]) ).
tcf(c_307,negated_conjecture,
! [X0: $i] :
( ~ iPr_def_13
| ~ isa(asked,X0) ),
inference(splitting,[splitting(split),new_symbols(definition,[iPr_def_13])],[c_78]) ).
tcf(c_308,negated_conjecture,
( iPr_def_13
| iPr_def_12
| iPr_def_11 ),
inference(splitting,[splitting(split),new_symbols(definition,[])],[c_78]) ).
tcf(c_311,plain,
( ~ iPr_def_11
| ~ isa(other,knight) ),
inference(instantiation,[status(thm)],[c_305]) ).
tcf(c_312,plain,
( ~ iPr_def_13
| ~ isa(asked,knight) ),
inference(instantiation,[status(thm)],[c_307]) ).
tcf(c_313,plain,
( ~ iPr_def_11
| ~ isa(other,knave) ),
inference(instantiation,[status(thm)],[c_305]) ).
tcf(c_315,plain,
( ~ iPr_def_12
| ~ response(yes) ),
inference(instantiation,[status(thm)],[c_306]) ).
tcf(c_316,plain,
( ~ iPr_def_12
| ~ response(no) ),
inference(instantiation,[status(thm)],[c_306]) ).
tcf(c_319,plain,
( ~ iPr_def_13
| ~ isa(asked,knave) ),
inference(instantiation,[status(thm)],[c_307]) ).
tcf(c_321,plain,
$false,
inference(prop_impl_just,[status(thm)],[c_319,c_316,c_315,c_313,c_312,c_311,c_308,c_173,c_166,c_75]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : PUZ035-1 : TPTP v9.3.1. Released v2.0.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.03/0.36 % Computer : n011.cluster.edu
% 0.03/0.36 % Model : x86_64 x86_64
% 0.03/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.03/0.36 % Memory : 8046.5625MB
% 0.03/0.36 % OS : Linux 6.8.0-71-generic
% 0.03/0.36 % CPULimit : 300
% 0.03/0.36 % WCLimit : 300
% 0.03/0.36 % DateTime : Thu Sep 24 06:43:57 UTC 2026
% 0.03/0.36 % CPUTime :
% 0.03/0.36 Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.03/0.40 Running EPR theorem proving
% 0.03/0.40 Running: /export/starexec/sandbox2/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s epr_schedule -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.03/0.41
% 0.03/0.41 % ======== iProver multi-core TPTP/SMT =========
% 0.03/0.41
% 0.03/0.41 % Detected problem language: tptp
% 0.03/0.42 % Proving...
% 0.88/1.09 % SZS status Started for theBenchmark.p
% 0.88/1.09 % SZS status Unsatisfiable for theBenchmark.p
% 0.88/1.09
% 0.88/1.09 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 0.88/1.09
% 0.88/1.09 % ------ iProver source info
% 0.88/1.09
% 0.88/1.09 % git: date: 2026-07-19 20:42:38 +0200
% 0.88/1.09 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 0.88/1.09 % git: non_committed_changes: false
% 0.88/1.09
% 0.88/1.09 % ------ Parsing...% successful
% 0.88/1.09
% 0.88/1.09
% 0.88/1.09 % ------ Clausification by vclausify_rel & Parsing by iProver...% ------ preprocesses with Option_epr_non_horn_non_eq
% 0.88/1.09 %
% 0.88/1.09
% 0.88/1.09 % ------ Preprocessing... sf_s rm: 0 0s sf_e pe_s pe:1:0s pe:2:0s pe_e sf_s rm: 0 0s sf_e pe_s pe_e %
% 0.88/1.09
% 0.88/1.09 % ------ Preprocessing...% ------ preprocesses with Option_epr_non_horn_non_eq
% 0.88/1.09 gs_s sp: 6 0s gs_e snvd_s sp: 0 0s snvd_e
% 0.88/1.09 % ------ Proving...
% 0.88/1.09 % ------ Problem Properties
% 0.88/1.09
% 0.88/1.09 %
% 0.88/1.09 % clauses 13
% 0.88/1.09 % conjectures 4
% 0.88/1.09 % EPR 13
% 0.88/1.09 % Horn 7
% 0.88/1.09 % unary 0
% 0.88/1.09 % binary 8
% 0.88/1.09 % lits 31
% 0.88/1.09 % lits eq 0
% 0.88/1.09 % fd_pure 0
% 0.88/1.09 % fd_pseudo 0
% 0.88/1.09 % fd_cond 0
% 0.88/1.09 % fd_pseudo_cond 0
% 0.88/1.09 % AC symbols 0
% 0.88/1.09
% 0.88/1.09 % ------ Schedule EPR non Horn non eq is on
% 0.88/1.09
% 0.88/1.09 % ------ no equalities: superposition off
% 0.88/1.09
% 0.88/1.09 % ------ Input Options "--resolution_flag false" Time Limit: 70.
% 0.88/1.09
% 0.88/1.09
% 0.88/1.09 % ------
% 0.88/1.09 % Current options:
% 0.88/1.09 % ------
% 0.88/1.09
% 0.88/1.09
% 0.88/1.09 %
% 0.88/1.09
% 0.88/1.09 % ------ Proving...
% 0.88/1.09 %
% 0.88/1.09
% 0.88/1.09 % SZS status Unsatisfiable for theBenchmark.p
% 0.88/1.09
% 0.88/1.09 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 0.88/1.09
% 0.88/1.09
%------------------------------------------------------------------------------