%------------------------------------------------------------------------------
% File : Drodi---4.1.1
% Problem : NLP208-1 : TPTP v9.3.1. Released v2.4.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n003.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 : Thu Sep 24 01:31:31 PM UTC 2026
% Result : Unsatisfiable 0.13s 0.40s
% Output : CNFRefutation 0.13s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 11
% Syntax : Number of formulae : 33 ( 16 unt; 0 def)
% Number of atoms : 50 ( 4 equ)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 37 ( 20 ~; 17 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 3 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 11 ( 9 usr; 1 prp; 0-4 aty)
% Number of functors : 4 ( 4 usr; 4 con; 0-0 aty)
% Number of variables : 40 ( 40 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f10,axiom,
! [U,V] :
( device(U,V)
| ~ wheel(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f11,axiom,
! [U,V] :
( instrumentality(U,V)
| ~ device(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f12,axiom,
! [U,V] :
( artifact(U,V)
| ~ instrumentality(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f13,axiom,
! [U,V] :
( object(U,V)
| ~ artifact(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f20,axiom,
! [U,V] :
( unisex(U,V)
| ~ object(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f34,axiom,
! [U,V] :
( male(U,V)
| ~ man(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f60,axiom,
! [U,V] :
( ~ unisex(U,V)
| ~ male(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f67,axiom,
! [U,V,W,X] :
( W = X
| ~ be(U,V,W,X) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f94,negated_conjecture,
man(skc11,skc15),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f98,negated_conjecture,
wheel(skc11,skc12),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f106,negated_conjecture,
be(skc11,skc13,skc15,skc12),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f130,plain,
! [X0,X1] :
( device(X0,X1)
| ~ wheel(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f10]) ).
fof(f131,plain,
! [X0,X1] :
( instrumentality(X0,X1)
| ~ device(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f11]) ).
fof(f132,plain,
! [X0,X1] :
( artifact(X0,X1)
| ~ instrumentality(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f12]) ).
fof(f133,plain,
! [X0,X1] :
( object(X0,X1)
| ~ artifact(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f13]) ).
fof(f140,plain,
! [X0,X1] :
( unisex(X0,X1)
| ~ object(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f20]) ).
fof(f154,plain,
! [X0,X1] :
( male(X0,X1)
| ~ man(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f34]) ).
fof(f180,plain,
! [X0,X1] :
( ~ unisex(X0,X1)
| ~ male(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f60]) ).
fof(f187,plain,
! [W,X] :
( W = X
| ! [U,V] : ~ be(U,V,W,X) ),
inference(miniscoping,[status(thm)],[f67]) ).
fof(f188,plain,
! [X0,X1,X2,X3] :
( X2 = X3
| ~ be(X0,X1,X2,X3) ),
inference(cnf_transformation,[status(thm)],[f187]) ).
fof(f220,plain,
man(skc11,skc15),
inference(cnf_transformation,[status(thm)],[f94]) ).
fof(f224,plain,
wheel(skc11,skc12),
inference(cnf_transformation,[status(thm)],[f98]) ).
fof(f232,plain,
be(skc11,skc13,skc15,skc12),
inference(cnf_transformation,[status(thm)],[f106]) ).
fof(f267,plain,
device(skc11,skc12),
inference(resolution,[status(thm)],[f130,f224]) ).
fof(f269,plain,
instrumentality(skc11,skc12),
inference(resolution,[status(thm)],[f267,f131]) ).
fof(f270,plain,
artifact(skc11,skc12),
inference(resolution,[status(thm)],[f269,f132]) ).
fof(f278,plain,
object(skc11,skc12),
inference(resolution,[status(thm)],[f133,f270]) ).
fof(f286,plain,
unisex(skc11,skc12),
inference(resolution,[status(thm)],[f140,f278]) ).
fof(f294,plain,
skc15 = skc12,
inference(resolution,[status(thm)],[f232,f188]) ).
fof(f298,plain,
man(skc11,skc12),
inference(backward_demodulation,[status(thm)],[f294,f220]) ).
fof(f308,plain,
male(skc11,skc12),
inference(resolution,[status(thm)],[f154,f298]) ).
fof(f365,plain,
~ male(skc11,skc12),
inference(resolution,[status(thm)],[f180,f286]) ).
fof(f368,plain,
$false,
inference(forward_subsumption_resolution,[status(thm)],[f365,f308]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : NLP208-1 : TPTP v9.3.1. Released v2.4.0.
% 0.00/0.04 % Command : drodi -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.09/0.36 % Computer : n003.cluster.edu
% 0.09/0.36 % Model : x86_64 x86_64
% 0.09/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.36 % Memory : 8046.5625MB
% 0.09/0.36 % OS : Linux 6.8.0-71-generic
% 0.09/0.36 % CPULimit : 300
% 0.09/0.36 % WCLimit : 300
% 0.09/0.36 % DateTime : Mon Sep 21 01:50:46 UTC 2026
% 0.09/0.36 % CPUTime :
% 0.13/0.38 % Drodi V4.1.1
% 0.13/0.40 % Refutation found
% 0.13/0.40 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.13/0.40 % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.13/0.42 % Elapsed time: 0.055190 seconds
% 0.13/0.42 % CPU time: 0.156517 seconds
% 0.13/0.42 % Total memory used: 84.394 MB
% 0.13/0.42 % Net memory used: 84.320 MB
%------------------------------------------------------------------------------