%------------------------------------------------------------------------------
% File : Drodi---4.1.1
% Problem : SWB026+2 : TPTP v9.3.1. Released v5.2.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n002.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 02:37:10 PM UTC 2026
% Result : Theorem 0.10s 0.43s
% Output : CNFRefutation 0.10s
% Verified :
% SZS Type : Refutation
% Derivation depth : 13
% Number of leaves : 13
% Syntax : Number of formulae : 77 ( 12 unt; 5 def)
% Number of atoms : 263 ( 33 equ)
% Maximal formula atoms : 14 ( 3 avg)
% Number of connectives : 290 ( 104 ~; 114 |; 56 &)
% ( 13 <=>; 3 =>; 0 <=; 0 <~>)
% Maximal formula depth : 13 ( 5 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 11 ( 9 usr; 6 prp; 0-3 aty)
% Number of functors : 20 ( 20 usr; 16 con; 0-3 aty)
% Number of variables : 119 ( 103 !; 16 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [P] :
( iext(uri_rdf_type,P,uri_rdf_Property)
<=> ip(P) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f2,axiom,
! [X,C] :
( iext(uri_rdf_type,X,C)
<=> icext(C,X) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f3,axiom,
! [P,C,X,Y] :
( ( iext(P,X,Y)
& iext(uri_rdfs_domain,P,C) )
=> icext(C,X) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f4,axiom,
iext(uri_rdfs_domain,uri_rdfs_domain,uri_rdf_Property),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f5,axiom,
! [Z,S1,A1] :
( ( iext(uri_rdf_rest,S1,uri_rdf_nil)
& iext(uri_rdf_first,S1,A1) )
=> ( iext(uri_owl_oneOf,Z,S1)
<=> ( ! [X] :
( icext(Z,X)
<=> X = A1 )
& ic(Z) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f6,axiom,
! [P] :
( icext(uri_owl_InverseFunctionalProperty,P)
<=> ( ! [X1,X2,Y] :
( ( iext(P,X2,Y)
& iext(P,X1,Y) )
=> X1 = X2 )
& ip(P) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f7,conjecture,
iext(uri_rdf_type,uri_ex_p,uri_owl_InverseFunctionalProperty),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f8,negated_conjecture,
~ iext(uri_rdf_type,uri_ex_p,uri_owl_InverseFunctionalProperty),
inference(negated_conjecture,[status(cth)],[f7]) ).
fof(f9,axiom,
? [BNODE_x1,BNODE_x2,BNODE_l1,BNODE_l2] :
( iext(uri_rdf_rest,BNODE_l2,uri_rdf_nil)
& iext(uri_rdf_first,BNODE_l2,uri_ex_u)
& iext(uri_owl_oneOf,BNODE_x2,BNODE_l2)
& iext(uri_rdfs_range,uri_ex_p,BNODE_x2)
& iext(uri_rdf_rest,BNODE_l1,uri_rdf_nil)
& iext(uri_rdf_first,BNODE_l1,uri_ex_w)
& iext(uri_owl_oneOf,BNODE_x1,BNODE_l1)
& iext(uri_rdfs_domain,uri_ex_p,BNODE_x1) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f10,plain,
! [P] :
( ( ~ ip(P)
| iext(uri_rdf_type,P,uri_rdf_Property) )
& ( ip(P)
| ~ iext(uri_rdf_type,P,uri_rdf_Property) ) ),
inference(NNF_transformation,[status(thm)],[f1]) ).
fof(f11,plain,
( ! [P] :
( ~ ip(P)
| iext(uri_rdf_type,P,uri_rdf_Property) )
& ! [P] :
( ip(P)
| ~ iext(uri_rdf_type,P,uri_rdf_Property) ) ),
inference(miniscoping,[status(thm)],[f10]) ).
fof(f12,plain,
! [X0] :
( ip(X0)
| ~ iext(uri_rdf_type,X0,uri_rdf_Property) ),
inference(cnf_transformation,[status(thm)],[f11]) ).
fof(f14,plain,
! [X,C] :
( ( ~ icext(C,X)
| iext(uri_rdf_type,X,C) )
& ( icext(C,X)
| ~ iext(uri_rdf_type,X,C) ) ),
inference(NNF_transformation,[status(thm)],[f2]) ).
fof(f15,plain,
( ! [X,C] :
( ~ icext(C,X)
| iext(uri_rdf_type,X,C) )
& ! [X,C] :
( icext(C,X)
| ~ iext(uri_rdf_type,X,C) ) ),
inference(miniscoping,[status(thm)],[f14]) ).
fof(f17,plain,
! [X0,X1] :
( ~ icext(X1,X0)
| iext(uri_rdf_type,X0,X1) ),
inference(cnf_transformation,[status(thm)],[f15]) ).
fof(f18,plain,
! [P,C,X,Y] :
( icext(C,X)
| ~ iext(P,X,Y)
| ~ iext(uri_rdfs_domain,P,C) ),
inference(pre_NNF_transformation,[status(thm)],[f3]) ).
fof(f19,plain,
! [C,X] :
( icext(C,X)
| ! [P] :
( ! [Y] : ~ iext(P,X,Y)
| ~ iext(uri_rdfs_domain,P,C) ) ),
inference(miniscoping,[status(thm)],[f18]) ).
fof(f20,plain,
! [X0,X1,X2,X3] :
( icext(X1,X2)
| ~ iext(X0,X2,X3)
| ~ iext(uri_rdfs_domain,X0,X1) ),
inference(cnf_transformation,[status(thm)],[f19]) ).
fof(f21,plain,
iext(uri_rdfs_domain,uri_rdfs_domain,uri_rdf_Property),
inference(cnf_transformation,[status(thm)],[f4]) ).
fof(f22,plain,
! [Z,S1,A1] :
( ( iext(uri_owl_oneOf,Z,S1)
<=> ( ! [X] :
( icext(Z,X)
<=> X = A1 )
& ic(Z) ) )
| ~ iext(uri_rdf_rest,S1,uri_rdf_nil)
| ~ iext(uri_rdf_first,S1,A1) ),
inference(pre_NNF_transformation,[status(thm)],[f5]) ).
fof(f23,plain,
! [Z,S1,A1] :
( ( ( ? [X] :
( ( X = A1
| icext(Z,X) )
& ( X != A1
| ~ icext(Z,X) ) )
| ~ ic(Z)
| iext(uri_owl_oneOf,Z,S1) )
& ( ( ! [X] :
( ( X != A1
| icext(Z,X) )
& ( X = A1
| ~ icext(Z,X) ) )
& ic(Z) )
| ~ iext(uri_owl_oneOf,Z,S1) ) )
| ~ iext(uri_rdf_rest,S1,uri_rdf_nil)
| ~ iext(uri_rdf_first,S1,A1) ),
inference(NNF_transformation,[status(thm)],[f22]) ).
fof(f24,plain,
! [S1,A1] :
( ( ! [Z] :
( ? [X] :
( ( X = A1
| icext(Z,X) )
& ( X != A1
| ~ icext(Z,X) ) )
| ~ ic(Z)
| iext(uri_owl_oneOf,Z,S1) )
& ! [Z] :
( ( ! [X] :
( X != A1
| icext(Z,X) )
& ! [X] :
( X = A1
| ~ icext(Z,X) )
& ic(Z) )
| ~ iext(uri_owl_oneOf,Z,S1) ) )
| ~ iext(uri_rdf_rest,S1,uri_rdf_nil)
| ~ iext(uri_rdf_first,S1,A1) ),
inference(miniscoping,[status(thm)],[f23]) ).
fof(f25,plain,
! [S1,A1] :
( ( ! [Z] :
( ( ( sK0_skl(Z,A1,S1) = A1
| icext(Z,sK0_skl(Z,A1,S1)) )
& ( sK0_skl(Z,A1,S1) != A1
| ~ icext(Z,sK0_skl(Z,A1,S1)) ) )
| ~ ic(Z)
| iext(uri_owl_oneOf,Z,S1) )
& ! [Z] :
( ( ! [X] :
( X != A1
| icext(Z,X) )
& ! [X] :
( X = A1
| ~ icext(Z,X) )
& ic(Z) )
| ~ iext(uri_owl_oneOf,Z,S1) ) )
| ~ iext(uri_rdf_rest,S1,uri_rdf_nil)
| ~ iext(uri_rdf_first,S1,A1) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0_skl]),skolemize(X,sK0_skl(Z,A1,S1))],[f24]) ).
fof(f27,plain,
! [X0,X1,X2,X3] :
( X3 = X1
| ~ icext(X2,X3)
| ~ iext(uri_owl_oneOf,X2,X0)
| ~ iext(uri_rdf_rest,X0,uri_rdf_nil)
| ~ iext(uri_rdf_first,X0,X1) ),
inference(cnf_transformation,[status(thm)],[f25]) ).
fof(f31,plain,
! [P] :
( icext(uri_owl_InverseFunctionalProperty,P)
<=> ( ! [X1,X2,Y] :
( X1 = X2
| ~ iext(P,X2,Y)
| ~ iext(P,X1,Y) )
& ip(P) ) ),
inference(pre_NNF_transformation,[status(thm)],[f6]) ).
fof(f32,plain,
! [P] :
( ( ? [X1,X2,Y] :
( X1 != X2
& iext(P,X2,Y)
& iext(P,X1,Y) )
| ~ ip(P)
| icext(uri_owl_InverseFunctionalProperty,P) )
& ( ( ! [X1,X2,Y] :
( X1 = X2
| ~ iext(P,X2,Y)
| ~ iext(P,X1,Y) )
& ip(P) )
| ~ icext(uri_owl_InverseFunctionalProperty,P) ) ),
inference(NNF_transformation,[status(thm)],[f31]) ).
fof(f33,plain,
( ! [P] :
( ? [X1,X2] :
( X1 != X2
& ? [Y] :
( iext(P,X2,Y)
& iext(P,X1,Y) ) )
| ~ ip(P)
| icext(uri_owl_InverseFunctionalProperty,P) )
& ! [P] :
( ( ! [X1,X2] :
( X1 = X2
| ! [Y] :
( ~ iext(P,X2,Y)
| ~ iext(P,X1,Y) ) )
& ip(P) )
| ~ icext(uri_owl_InverseFunctionalProperty,P) ) ),
inference(miniscoping,[status(thm)],[f32]) ).
fof(f34,plain,
( ! [P] :
( ( sK1_skl(P) != sK2_skl(P)
& iext(P,sK2_skl(P),sK3_skl(P))
& iext(P,sK1_skl(P),sK3_skl(P)) )
| ~ ip(P)
| icext(uri_owl_InverseFunctionalProperty,P) )
& ! [P] :
( ( ! [X1,X2] :
( X1 = X2
| ! [Y] :
( ~ iext(P,X2,Y)
| ~ iext(P,X1,Y) ) )
& ip(P) )
| ~ icext(uri_owl_InverseFunctionalProperty,P) ) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK1_skl,sK2_skl,sK3_skl]),skolemize(X1,sK1_skl(P)),skolemize(X2,sK2_skl(P)),skolemize(Y,sK3_skl(P))],[f33]) ).
fof(f37,plain,
! [X0] :
( iext(X0,sK1_skl(X0),sK3_skl(X0))
| ~ ip(X0)
| icext(uri_owl_InverseFunctionalProperty,X0) ),
inference(cnf_transformation,[status(thm)],[f34]) ).
fof(f38,plain,
! [X0] :
( iext(X0,sK2_skl(X0),sK3_skl(X0))
| ~ ip(X0)
| icext(uri_owl_InverseFunctionalProperty,X0) ),
inference(cnf_transformation,[status(thm)],[f34]) ).
fof(f39,plain,
! [X0] :
( sK1_skl(X0) != sK2_skl(X0)
| ~ ip(X0)
| icext(uri_owl_InverseFunctionalProperty,X0) ),
inference(cnf_transformation,[status(thm)],[f34]) ).
fof(f40,plain,
~ iext(uri_rdf_type,uri_ex_p,uri_owl_InverseFunctionalProperty),
inference(cnf_transformation,[status(thm)],[f8]) ).
fof(f41,plain,
? [BNODE_l2] :
( iext(uri_rdf_rest,BNODE_l2,uri_rdf_nil)
& iext(uri_rdf_first,BNODE_l2,uri_ex_u)
& ? [BNODE_x2] :
( iext(uri_owl_oneOf,BNODE_x2,BNODE_l2)
& iext(uri_rdfs_range,uri_ex_p,BNODE_x2)
& ? [BNODE_l1] :
( iext(uri_rdf_rest,BNODE_l1,uri_rdf_nil)
& iext(uri_rdf_first,BNODE_l1,uri_ex_w)
& ? [BNODE_x1] :
( iext(uri_owl_oneOf,BNODE_x1,BNODE_l1)
& iext(uri_rdfs_domain,uri_ex_p,BNODE_x1) ) ) ) ),
inference(miniscoping,[status(thm)],[f9]) ).
fof(f42,plain,
( iext(uri_rdf_rest,sK4_skl,uri_rdf_nil)
& iext(uri_rdf_first,sK4_skl,uri_ex_u)
& iext(uri_owl_oneOf,sK5_skl,sK4_skl)
& iext(uri_rdfs_range,uri_ex_p,sK5_skl)
& iext(uri_rdf_rest,sK6_skl,uri_rdf_nil)
& iext(uri_rdf_first,sK6_skl,uri_ex_w)
& iext(uri_owl_oneOf,sK7_skl,sK6_skl)
& iext(uri_rdfs_domain,uri_ex_p,sK7_skl) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK4_skl,sK5_skl,sK6_skl,sK7_skl]),skolemize(BNODE_l2,sK4_skl),skolemize(BNODE_x2,sK5_skl),skolemize(BNODE_l1,sK6_skl),skolemize(BNODE_x1,sK7_skl)],[f41]) ).
fof(f43,plain,
iext(uri_rdfs_domain,uri_ex_p,sK7_skl),
inference(cnf_transformation,[status(thm)],[f42]) ).
fof(f44,plain,
iext(uri_owl_oneOf,sK7_skl,sK6_skl),
inference(cnf_transformation,[status(thm)],[f42]) ).
fof(f45,plain,
iext(uri_rdf_first,sK6_skl,uri_ex_w),
inference(cnf_transformation,[status(thm)],[f42]) ).
fof(f46,plain,
iext(uri_rdf_rest,sK6_skl,uri_rdf_nil),
inference(cnf_transformation,[status(thm)],[f42]) ).
fof(f53,plain,
! [X0,X1] :
( icext(sK7_skl,X0)
| ~ iext(uri_ex_p,X0,X1) ),
inference(resolution,[status(thm)],[f20,f43]) ).
fof(f54,plain,
! [X0,X1] :
( icext(uri_rdf_Property,X0)
| ~ iext(uri_rdfs_domain,X0,X1) ),
inference(resolution,[status(thm)],[f20,f21]) ).
fof(f55,plain,
! [X0,X1] :
( iext(uri_rdf_type,X0,uri_rdf_Property)
| ~ iext(uri_rdfs_domain,X0,X1) ),
inference(resolution,[status(thm)],[f54,f17]) ).
fof(f56,plain,
! [X0,X1] :
( ip(X0)
| ~ iext(uri_rdfs_domain,X0,X1) ),
inference(resolution,[status(thm)],[f55,f12]) ).
fof(f59,plain,
! [X0,X1] :
( ~ iext(uri_rdfs_domain,X0,X1)
| iext(X0,sK1_skl(X0),sK3_skl(X0))
| icext(uri_owl_InverseFunctionalProperty,X0) ),
inference(resolution,[status(thm)],[f37,f56]) ).
fof(f61,plain,
! [X0,X1] :
( ~ iext(uri_rdfs_domain,X0,X1)
| iext(X0,sK2_skl(X0),sK3_skl(X0))
| icext(uri_owl_InverseFunctionalProperty,X0) ),
inference(resolution,[status(thm)],[f38,f56]) ).
fof(f63,plain,
( iext(uri_ex_p,sK1_skl(uri_ex_p),sK3_skl(uri_ex_p))
| icext(uri_owl_InverseFunctionalProperty,uri_ex_p) ),
inference(resolution,[status(thm)],[f59,f43]) ).
fof(f65,definition,
( sQ0_spl
<=> icext(uri_owl_InverseFunctionalProperty,uri_ex_p) ),
introduced(definition,[new_symbols(definition,[sQ0_spl])],[split_symbol_definition]) ).
fof(f66,plain,
( ~ sQ0_spl
| icext(uri_owl_InverseFunctionalProperty,uri_ex_p) ),
inference(component_clause,[status(thm)],[f65]) ).
fof(f68,definition,
( sQ1_spl
<=> iext(uri_ex_p,sK1_skl(uri_ex_p),sK3_skl(uri_ex_p)) ),
introduced(definition,[new_symbols(definition,[sQ1_spl])],[split_symbol_definition]) ).
fof(f69,plain,
( ~ sQ1_spl
| iext(uri_ex_p,sK1_skl(uri_ex_p),sK3_skl(uri_ex_p)) ),
inference(component_clause,[status(thm)],[f68]) ).
fof(f71,plain,
( sQ1_spl
| sQ0_spl ),
inference(split_clause,[status(thm)],[f63,f65,f68]) ).
fof(f83,plain,
! [X0,X1,X2] :
( X2 = X0
| ~ icext(X1,X2)
| ~ iext(uri_owl_oneOf,X1,sK6_skl)
| ~ iext(uri_rdf_first,sK6_skl,X0) ),
inference(resolution,[status(thm)],[f27,f46]) ).
fof(f88,plain,
( ~ sQ0_spl
| iext(uri_rdf_type,uri_ex_p,uri_owl_InverseFunctionalProperty) ),
inference(resolution,[status(thm)],[f66,f17]) ).
fof(f89,plain,
( ~ sQ0_spl
| $false ),
inference(forward_subsumption_resolution,[status(thm)],[f88,f40]) ).
fof(f90,plain,
~ sQ0_spl,
inference(contradiction_clause,[status(thm)],[f89]) ).
fof(f101,plain,
( iext(uri_ex_p,sK2_skl(uri_ex_p),sK3_skl(uri_ex_p))
| icext(uri_owl_InverseFunctionalProperty,uri_ex_p) ),
inference(resolution,[status(thm)],[f61,f43]) ).
fof(f103,definition,
( sQ5_spl
<=> iext(uri_ex_p,sK2_skl(uri_ex_p),sK3_skl(uri_ex_p)) ),
introduced(definition,[new_symbols(definition,[sQ5_spl])],[split_symbol_definition]) ).
fof(f104,plain,
( ~ sQ5_spl
| iext(uri_ex_p,sK2_skl(uri_ex_p),sK3_skl(uri_ex_p)) ),
inference(component_clause,[status(thm)],[f103]) ).
fof(f106,plain,
( sQ5_spl
| sQ0_spl ),
inference(split_clause,[status(thm)],[f101,f65,f103]) ).
fof(f110,plain,
( ~ sQ1_spl
| icext(sK7_skl,sK1_skl(uri_ex_p)) ),
inference(resolution,[status(thm)],[f69,f53]) ).
fof(f113,plain,
( ~ sQ5_spl
| icext(sK7_skl,sK2_skl(uri_ex_p)) ),
inference(resolution,[status(thm)],[f104,f53]) ).
fof(f133,plain,
! [X0,X1] :
( X1 = uri_ex_w
| ~ icext(X0,X1)
| ~ iext(uri_owl_oneOf,X0,sK6_skl) ),
inference(resolution,[status(thm)],[f83,f45]) ).
fof(f134,plain,
! [X0] :
( X0 = uri_ex_w
| ~ icext(sK7_skl,X0) ),
inference(resolution,[status(thm)],[f133,f44]) ).
fof(f136,plain,
( ~ sQ5_spl
| sK2_skl(uri_ex_p) = uri_ex_w ),
inference(resolution,[status(thm)],[f134,f113]) ).
fof(f137,plain,
( ~ sQ1_spl
| sK1_skl(uri_ex_p) = uri_ex_w ),
inference(resolution,[status(thm)],[f134,f110]) ).
fof(f144,plain,
( ~ sQ1_spl
| uri_ex_w != sK2_skl(uri_ex_p)
| ~ ip(uri_ex_p)
| icext(uri_owl_InverseFunctionalProperty,uri_ex_p) ),
inference(paramodulation,[status(thm)],[f137,f39]) ).
fof(f145,definition,
( sQ6_spl
<=> ip(uri_ex_p) ),
introduced(definition,[new_symbols(definition,[sQ6_spl])],[split_symbol_definition]) ).
fof(f147,plain,
( sQ6_spl
| ~ ip(uri_ex_p) ),
inference(component_clause,[status(thm)],[f145]) ).
fof(f148,definition,
( sQ7_spl
<=> uri_ex_w = sK2_skl(uri_ex_p) ),
introduced(definition,[new_symbols(definition,[sQ7_spl])],[split_symbol_definition]) ).
fof(f150,plain,
( sQ7_spl
| uri_ex_w != sK2_skl(uri_ex_p) ),
inference(component_clause,[status(thm)],[f148]) ).
fof(f151,plain,
( ~ sQ1_spl
| ~ sQ7_spl
| ~ sQ6_spl
| sQ0_spl ),
inference(split_clause,[status(thm)],[f144,f65,f145,f148,f68]) ).
fof(f153,plain,
! [X0] :
( sQ6_spl
| ~ iext(uri_rdfs_domain,uri_ex_p,X0) ),
inference(resolution,[status(thm)],[f147,f56]) ).
fof(f155,plain,
( sQ6_spl
| $false ),
inference(backward_subsumption_resolution,[status(thm)],[f43,f153]) ).
fof(f156,plain,
sQ6_spl,
inference(contradiction_clause,[status(thm)],[f155]) ).
fof(f157,plain,
( sQ7_spl
| ~ sQ5_spl
| uri_ex_w != uri_ex_w ),
inference(forward_demodulation,[status(thm)],[f136,f150]) ).
fof(f158,plain,
( sQ7_spl
| ~ sQ5_spl
| $false ),
inference(trivial_equality_resolution,[status(thm)],[f157]) ).
fof(f159,plain,
( sQ7_spl
| ~ sQ5_spl ),
inference(contradiction_clause,[status(thm)],[f158]) ).
fof(f160,plain,
$false,
inference(sat_refutation,[status(thm)],[f71,f90,f106,f151,f156,f159]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SWB026+2 : TPTP v9.3.1. Released v5.2.0.
% 0.00/0.04 % Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.10/0.38 % Computer : n002.cluster.edu
% 0.10/0.38 % Model : x86_64 x86_64
% 0.10/0.38 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.38 % Memory : 8046.5625MB
% 0.10/0.38 % OS : Linux 6.8.0-71-generic
% 0.10/0.38 % CPULimit : 300
% 0.10/0.38 % WCLimit : 300
% 0.10/0.38 % DateTime : Mon Sep 21 07:44:19 UTC 2026
% 0.10/0.38 % CPUTime :
% 0.10/0.40 % Drodi V4.1.1
% 0.10/0.43 % Refutation found
% 0.10/0.43 % SZS status Theorem for theBenchmark: Theorem is valid
% 0.10/0.43 % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.10/0.46 % Elapsed time: 0.073205 seconds
% 0.10/0.46 % CPU time: 0.183923 seconds
% 0.10/0.46 % Total memory used: 81.547 MB
% 0.10/0.46 % Net memory used: 81.178 MB
%------------------------------------------------------------------------------