%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : PUZ035-6 : 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 : n005.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 02:32:48 PM UTC 2026
% Result : Unsatisfiable 1.77s 1.27s
% Output : CNFRefutation 1.77s
% Verified :
% SZS Type : Refutation
% Derivation depth : 5
% Number of leaves : 2
% Syntax : Number of formulae : 18 ( 1 unt; 0 def)
% Number of atoms : 35 ( 0 equ)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 39 ( 22 ~; 17 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 5 ( 3 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 4 ( 3 usr; 3 prp; 0-1 aty)
% Number of functors : 5 ( 5 usr; 4 con; 0-2 aty)
% Number of variables : 10 ( 0 sgn 10 !; 0 ?; 7 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X0] :
( truth(isa(X0,knave))
| truth(isa(X0,knight)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',everyone_a_knight_or_knave) ).
fof(f11,negated_conjecture,
! [X0,X1] :
( ~ truth(isa(other,X1))
| ~ truth(isa(asked,X0)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',query) ).
tcf(c_60,plain,
! [X0: $i] :
( truth(isa(X0,knave))
| truth(isa(X0,knight)) ),
inference(cnf_transformation,[],[f1]) ).
tcf(c_70,negated_conjecture,
! [X0: $i,X1: $i] :
( ~ truth(isa(other,X1))
| ~ truth(isa(asked,X0)) ),
inference(cnf_transformation,[],[f11]) ).
tcf(c_76,plain,
( ~ truth(isa(other,knight))
| ~ truth(isa(asked,knight)) ),
inference(instantiation,[status(thm)],[c_70]) ).
tcf(c_281,negated_conjecture,
! [X0: $i] :
( ~ iPr_def_10
| ~ truth(isa(other,X0)) ),
inference(splitting,[splitting(split),new_symbols(definition,[iPr_def_10])],[c_70]) ).
tcf(c_282,negated_conjecture,
! [X0: $i] :
( ~ iPr_def_11
| ~ truth(isa(asked,X0)) ),
inference(splitting,[splitting(split),new_symbols(definition,[iPr_def_11])],[c_70]) ).
tcf(c_283,negated_conjecture,
( iPr_def_11
| iPr_def_10 ),
inference(splitting,[splitting(split),new_symbols(definition,[])],[c_70]) ).
tcf(c_284,negated_conjecture,
( iPr_def_11
| iPr_def_10 ),
inference(demodulation,[status(thm)],[c_283]) ).
tcf(c_285,negated_conjecture,
! [X0: $i] :
( ~ iPr_def_11
| ~ truth(isa(asked,X0)) ),
inference(demodulation,[status(thm)],[c_282]) ).
tcf(c_286,negated_conjecture,
! [X0: $i] :
( ~ iPr_def_10
| ~ truth(isa(other,X0)) ),
inference(demodulation,[status(thm)],[c_281]) ).
tcf(c_287,plain,
( ~ iPr_def_10
| ~ truth(isa(other,knight)) ),
inference(instantiation,[status(thm)],[c_286]) ).
tcf(c_288,plain,
( ~ iPr_def_11
| ~ truth(isa(asked,knight)) ),
inference(instantiation,[status(thm)],[c_285]) ).
tcf(c_289,plain,
( truth(isa(other,knave))
| truth(isa(other,knight)) ),
inference(instantiation,[status(thm)],[c_60]) ).
tcf(c_312,plain,
( ~ iPr_def_10
| ~ truth(isa(other,knave)) ),
inference(instantiation,[status(thm)],[c_286]) ).
tcf(c_314,plain,
( truth(isa(asked,knave))
| truth(isa(asked,knight)) ),
inference(instantiation,[status(thm)],[c_60]) ).
tcf(c_317,plain,
( ~ iPr_def_11
| ~ truth(isa(asked,knave)) ),
inference(instantiation,[status(thm)],[c_285]) ).
tcf(c_336,plain,
$false,
inference(prop_impl_just,[status(thm)],[c_317,c_314,c_312,c_289,c_288,c_287,c_284,c_76]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : PUZ035-6 : TPTP v9.3.1. Released v2.0.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.10/0.36 % Computer : n005.cluster.edu
% 0.10/0.36 % Model : x86_64 x86_64
% 0.10/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.36 % Memory : 8046.5625MB
% 0.10/0.36 % OS : Linux 6.8.0-71-generic
% 0.10/0.36 % CPULimit : 300
% 0.10/0.36 % WCLimit : 300
% 0.10/0.36 % DateTime : Thu Sep 24 06:44:17 UTC 2026
% 0.10/0.37 % CPUTime :
% 0.10/0.37 Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.10/0.40 Running first-order theorem proving
% 0.10/0.40 Running: /export/starexec/sandbox2/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.10/0.41
% 0.10/0.41 % ======== iProver multi-core TPTP/SMT =========
% 0.10/0.41
% 0.10/0.41 % Detected problem language: tptp
% 0.10/0.42 % Proving...
% 1.77/1.27 % SZS status Started for theBenchmark.p
% 1.77/1.27 % SZS status Unsatisfiable for theBenchmark.p
% 1.77/1.27
% 1.77/1.27 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 1.77/1.27
% 1.77/1.27 % ------ iProver source info
% 1.77/1.27
% 1.77/1.27 % git: date: 2026-07-19 20:42:38 +0200
% 1.77/1.27 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 1.77/1.27 % git: non_committed_changes: false
% 1.77/1.27
% 1.77/1.27 % ------ Parsing...% successful
% 1.77/1.27
% 1.77/1.27
% 1.77/1.27 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 1.77/1.27
% 1.77/1.27 % ------ Preprocessing... sf_s rm: 0 0s sf_e pe_s pe:1:0s pe_e sf_s rm: 0 0s sf_e pe_s pe_e %
% 1.77/1.27
% 1.77/1.27 % ------ Preprocessing... gs_s sp: 2 0s gs_e snvd_s sp: 0 0s snvd_e
% 1.77/1.27 % ------ Proving...
% 1.77/1.27 % ------ Problem Properties
% 1.77/1.27
% 1.77/1.27 %
% 1.77/1.27 % clauses 12
% 1.77/1.27 % conjectures 3
% 1.77/1.27 % EPR 1
% 1.77/1.27 % Horn 7
% 1.77/1.27 % unary 0
% 1.77/1.27 % binary 11
% 1.77/1.27 % lits 25
% 1.77/1.27 % lits eq 0
% 1.77/1.27 % fd_pure 0
% 1.77/1.27 % fd_pseudo 0
% 1.77/1.27 % fd_cond 0
% 1.77/1.27 % fd_pseudo_cond 0
% 1.77/1.27 % AC symbols 0
% 1.77/1.27
% 1.77/1.27 % ------ Schedule dynamic 5 is on
% 1.77/1.27
% 1.77/1.27 % ------ no equalities: superposition off
% 1.77/1.27
% 1.77/1.27 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 1.77/1.27
% 1.77/1.27
% 1.77/1.27 % ------
% 1.77/1.27 % Current options:
% 1.77/1.27 % ------
% 1.77/1.27
% 1.77/1.27
% 1.77/1.27 %
% 1.77/1.27
% 1.77/1.27 % ------ Proving...
% 1.77/1.27 %
% 1.77/1.27
% 1.77/1.27 % SZS status Unsatisfiable for theBenchmark.p
% 1.77/1.27
% 1.77/1.27 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 1.77/1.27
% 1.77/1.27
%------------------------------------------------------------------------------