%------------------------------------------------------------------------------
% File : FindProof---0.1
% Problem : PUZ035-6 : TPTP v9.3.1. Released v2.0.0.
% Transfm : none
% Format : tptp:raw
% Command : run_findproof /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% Computer : n009.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 02:31:56 PM UTC 2026
% Result : Unsatisfiable 5.50s 11.43s
% Output : Proof 5.50s
% Verified :
% SZS Type : Refutation
% Derivation depth : 10
% Number of leaves : 2
% Syntax : Number of formulae : 15 ( 4 unt; 0 def)
% Number of atoms : 26 ( 0 equ)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 21 ( 10 ~; 11 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 5 ( 3 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 2 ( 1 usr; 1 prp; 0-1 aty)
% Number of functors : 5 ( 5 usr; 4 con; 0-2 aty)
% Number of variables : 14 ( 6 sgn 6 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
cnf(f0,axiom,
( truth(isa(P,knave))
| truth(isa(P,knight)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',everyone_a_knight_or_knave) ).
fof(f0_nnf,plain,
! [P] :
( truth(isa(P,knave))
| truth(isa(P,knight)) ),
inference(nnf_transformation,[status(thm)],[f0]) ).
fof(f0_sk,plain,
! [P] :
( truth(isa(P,knave))
| truth(isa(P,knight)) ),
inference(skolemisation,[status(esa)],[f0_nnf]) ).
cnf(c0,plain,
( truth(isa(X0,knave))
| truth(isa(X0,knight)) ),
inference(cnf_transformation,[status(esa)],[f0_sk]) ).
cnf(f10,negated_conjecture,
( ~ truth(isa(other,Y))
| ~ truth(isa(asked,X)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',query) ).
fof(f10_nnf,plain,
! [X,Y] :
( ~ truth(isa(other,Y))
| ~ truth(isa(asked,X)) ),
inference(nnf_transformation,[status(thm)],[f10]) ).
fof(f10_sk,plain,
! [X,Y] :
( ~ truth(isa(other,Y))
| ~ truth(isa(asked,X)) ),
inference(skolemisation,[status(esa)],[f10_nnf]) ).
cnf(c10,plain,
( ~ truth(isa(other,X1))
| ~ truth(isa(asked,X0)) ),
inference(cnf_transformation,[status(esa)],[f10_sk]) ).
cnf(p13,plain,
( ~ truth(isa(other,X0))
| truth(isa(asked,knight)) ),
inference(resolution,[status(thm)],[c0,c10]) ).
cnf(p16,plain,
( truth(isa(other,knight))
| truth(isa(asked,knight)) ),
inference(resolution,[status(thm)],[p13,c0]) ).
cnf(p19,plain,
( truth(isa(asked,knight))
| truth(isa(asked,knight)) ),
inference(resolution,[status(thm)],[p16,p13]) ).
cnf(p20,plain,
truth(isa(asked,knight)),
inference(factoring,[status(thm)],[p19]) ).
cnf(p21,plain,
~ truth(isa(other,X0)),
inference(resolution,[status(thm)],[p20,c10]) ).
cnf(p25,plain,
truth(isa(other,knight)),
inference(resolution,[status(thm)],[p21,c0]) ).
cnf(p28,plain,
$false,
inference(resolution,[status(thm)],[p25,p21]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : PUZ035-6 : TPTP v9.3.1. Released v2.0.0.
% 0.00/0.04 % Command : run_findproof /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.13/10.38 % Computer : n009.cluster.edu
% 0.13/10.38 % Model : x86_64 x86_64
% 0.13/10.38 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/10.38 % Memory : 8046.5625MB
% 0.13/10.38 % OS : Linux 6.8.0-71-generic
% 0.13/10.39 % CPULimit : 300
% 0.13/10.39 % WCLimit : 300
% 0.13/10.39 % DateTime : Thu Sep 24 06:44:54 UTC 2026
% 0.13/10.39 % CPUTime :
% 0.13/10.39 Running run_findproof /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 5.50/11.43 % SZS status Unsatisfiable for /export/starexec/sandbox2/benchmark/theBenchmark.p
% 5.50/11.43 % SZS output start Proof for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
%------------------------------------------------------------------------------