%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : KRS170+1 : TPTP v9.3.1. Released v3.1.0.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n007.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 : Sun Sep 27 07:46:15 AM UTC 2026
% Result : Theorem 0.18s 5.48s
% Output : CNFRefutation 0.18s
% Verified :
% SZS Type : Refutation
% Derivation depth : 31
% Number of leaves : 4
% Syntax : Number of formulae : 80 ( 8 unt; 0 def)
% Number of atoms : 330 ( 0 equ)
% Maximal formula atoms : 48 ( 4 avg)
% Number of connectives : 388 ( 138 ~; 220 |; 22 &)
% ( 4 <=>; 4 =>; 0 <=; 0 <~>)
% Maximal formula depth : 14 ( 4 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 7 ( 6 usr; 1 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 6 con; 0-0 aty)
% Number of variables : 30 ( 2 sgn 16 !; 6 ?)
% Comments :
%------------------------------------------------------------------------------
fof(axiom_0,axiom,
! [X] :
( ~ cowlNothing(X)
& cowlThing(X) ),
file('theBenchmark.p',axiom_0) ).
fof(axiom_1,axiom,
! [X] :
( xsd_string(X)
<=> ~ xsd_integer(X) ),
file('theBenchmark.p',axiom_1) ).
fof(axiom_2,axiom,
! [X,Y] :
( rhasLeader(X,Y)
<=> rhasHead(X,Y) ),
file('theBenchmark.p',axiom_2) ).
fof(the_axiom,conjecture,
( ! [X,Y] :
( rhasHead(X,Y)
=> rhasLeader(X,Y) )
& ! [X,Y] :
( rhasLeader(X,Y)
=> rhasHead(X,Y) )
& ! [X] :
( xsd_string(X)
<=> ~ xsd_integer(X) )
& ! [X] :
( ~ cowlNothing(X)
& cowlThing(X) ) ),
file('theBenchmark.p',the_axiom) ).
fof(the_axiom_neg,negated_conjecture,
~ ( ! [X,Y] :
( rhasHead(X,Y)
=> rhasLeader(X,Y) )
& ! [X,Y] :
( rhasLeader(X,Y)
=> rhasHead(X,Y) )
& ! [X] :
( xsd_string(X)
<=> ~ xsd_integer(X) )
& ! [X] :
( ~ cowlNothing(X)
& cowlThing(X) ) ),
inference(assume_negation,[status(cth)],[the_axiom]) ).
fof(nnf_4,plain,
( ? [X,Y] :
( ~ rhasLeader(X,Y)
& rhasHead(X,Y) )
| ? [X2,X3] :
( ~ rhasHead(X2,X3)
& rhasLeader(X2,X3) )
| ? [X1] :
( ( xsd_integer(X1)
| ~ xsd_string(X1) )
& ( ~ xsd_integer(X1)
| xsd_string(X1) ) )
| ? [X0] :
( cowlNothing(X0)
| ~ cowlThing(X0) ) ),
inference(fof_nnf,[status(thm)],[the_axiom_neg]) ).
fof(sk_the_axiom_neg_sk,plain,
( ( ~ rhasLeader(sK4,sK5)
& rhasHead(sK4,sK5) )
| ( ~ rhasHead(sK2,sK3)
& rhasLeader(sK2,sK3) )
| ( ( xsd_integer(sK1)
| ~ xsd_string(sK1) )
& ( ~ xsd_integer(sK1)
| xsd_string(sK1) ) )
| cowlNothing(sK0)
| ~ cowlThing(sK0) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1,sK2,sK3,sK4,sK5]),skolemize(X0,sK0),skolemize(X1,sK1),skolemize(X2,sK2),skolemize(X3,sK3),skolemize(X,sK4),skolemize(Y,sK5)],[nnf_4]) ).
fof(sk_the_axiom_neg,plain,
( ( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) )
& ( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) )
& ( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) )
& ( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) )
& ( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) )
& ( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) )
& ( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) )
& ( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) ) ),
inference(cnf_transformation,[status(thm)],[sk_the_axiom_neg_sk]) ).
cnf(c_5,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) ),
inference(split_conjunct,[status(thm)],[sk_the_axiom_neg]) ).
cnf(c_6,plain,
cowlThing(A),
inference(clausify,[status(thm)],[axiom_0]) ).
cnf(c_7,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) ),
inference(split_conjunct,[status(thm)],[sk_the_axiom_neg]) ).
cnf(c_8,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) ),
inference(split_conjunct,[status(thm)],[sk_the_axiom_neg]) ).
cnf(c_9,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) ),
inference(split_conjunct,[status(thm)],[sk_the_axiom_neg]) ).
cnf(c_10,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) ),
inference(split_conjunct,[status(thm)],[sk_the_axiom_neg]) ).
cnf(c_11,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) ),
inference(split_conjunct,[status(thm)],[sk_the_axiom_neg]) ).
cnf(c_12,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) ),
inference(split_conjunct,[status(thm)],[sk_the_axiom_neg]) ).
cnf(c_13,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0)
| ~ cowlThing(sK0) ),
inference(split_conjunct,[status(thm)],[sk_the_axiom_neg]) ).
cnf(c_14,plain,
~ cowlNothing(A),
inference(clausify,[status(thm)],[axiom_0]) ).
cnf(c_15,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0) ),
inference(resolve,[status(thm)],[c_5,c_6]) ).
cnf(c_16,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0) ),
inference(resolve,[status(thm)],[c_7,c_6]) ).
cnf(c_17,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0) ),
inference(resolve,[status(thm)],[c_8,c_6]) ).
cnf(c_18,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1)
| cowlNothing(sK0) ),
inference(resolve,[status(thm)],[c_9,c_6]) ).
cnf(c_19,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0) ),
inference(resolve,[status(thm)],[c_10,c_6]) ).
cnf(c_20,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0) ),
inference(resolve,[status(thm)],[c_11,c_6]) ).
cnf(c_21,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0) ),
inference(resolve,[status(thm)],[c_12,c_6]) ).
cnf(c_22,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1)
| cowlNothing(sK0) ),
inference(resolve,[status(thm)],[c_13,c_6]) ).
cnf(c_23,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1) ),
inference(resolve,[status(thm)],[c_14,c_18]) ).
cnf(c_24,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1) ),
inference(resolve,[status(thm)],[c_14,c_19]) ).
cnf(c_25,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1) ),
inference(resolve,[status(thm)],[c_14,c_20]) ).
cnf(c_26,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1) ),
inference(resolve,[status(thm)],[c_14,c_21]) ).
cnf(c_27,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| ~ xsd_string(sK1) ),
inference(resolve,[status(thm)],[c_14,c_22]) ).
cnf(c_28,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1) ),
inference(resolve,[status(thm)],[c_14,c_17]) ).
cnf(c_29,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1) ),
inference(resolve,[status(thm)],[c_14,c_16]) ).
cnf(c_30,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| xsd_string(sK1) ),
inference(resolve,[status(thm)],[c_14,c_15]) ).
cnf(c_31,plain,
( ~ xsd_integer(A)
| ~ xsd_string(A) ),
inference(clausify,[status(thm)],[axiom_1]) ).
cnf(c_32,plain,
( xsd_integer(A)
| xsd_string(A) ),
inference(clausify,[status(thm)],[axiom_1]) ).
cnf(c_33,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_32,c_27]) ).
cnf(c_34,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_33]) ).
cnf(c_35,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_32,c_26]) ).
cnf(c_36,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_35]) ).
cnf(c_37,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_32,c_25]) ).
cnf(c_38,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_37]) ).
cnf(c_39,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_32,c_24]) ).
cnf(c_40,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_39]) ).
cnf(c_41,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| ~ xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_31,c_23]) ).
cnf(c_42,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_41]) ).
cnf(c_43,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1)
| ~ xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_31,c_28]) ).
cnf(c_44,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3)
| ~ xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_43]) ).
cnf(c_45,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| ~ xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_31,c_29]) ).
cnf(c_46,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_45]) ).
cnf(c_47,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1)
| ~ xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_31,c_30]) ).
cnf(c_48,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3)
| ~ xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_47]) ).
cnf(c_49,plain,
( ~ rhasHead(A,B)
| rhasLeader(A,B) ),
inference(clausify,[status(thm)],[axiom_2]) ).
cnf(c_50,plain,
( rhasHead(A,B)
| ~ rhasLeader(A,B) ),
inference(clausify,[status(thm)],[axiom_2]) ).
cnf(c_51,plain,
( rhasHead(sK4,sK5)
| xsd_integer(sK1)
| rhasHead(sK2,sK3) ),
inference(resolve,[status(thm)],[c_50,c_40]) ).
cnf(c_52,plain,
( rhasLeader(sK4,sK5)
| xsd_integer(sK1)
| rhasHead(sK2,sK3) ),
inference(resolve,[status(thm)],[c_51,c_49]) ).
cnf(c_72,negated_conjecture,
( rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| xsd_integer(sK1)
| rhasHead(sK2,sK3) ),
inference(resolve,[status(thm)],[c_52,c_38]) ).
cnf(c_53,negated_conjecture,
( rhasLeader(sK2,sK3)
| xsd_integer(sK1)
| rhasHead(sK2,sK3) ),
inference(copy,[status(thm)],[c_72]) ).
cnf(c_73,plain,
( rhasHead(sK2,sK3)
| xsd_integer(sK1)
| rhasHead(sK2,sK3) ),
inference(resolve,[status(thm)],[c_53,c_50]) ).
cnf(c_54,plain,
( xsd_integer(sK1)
| rhasHead(sK2,sK3) ),
inference(copy,[status(thm)],[c_73]) ).
cnf(c_74,negated_conjecture,
( rhasHead(sK4,sK5)
| xsd_integer(sK1)
| xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_54,c_36]) ).
cnf(c_56,negated_conjecture,
( rhasHead(sK4,sK5)
| xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_74]) ).
cnf(c_57,plain,
( rhasLeader(sK4,sK5)
| xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_56,c_49]) ).
cnf(c_75,negated_conjecture,
( ~ rhasHead(sK2,sK3)
| xsd_integer(sK1)
| xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_57,c_34]) ).
cnf(c_58,negated_conjecture,
( ~ rhasHead(sK2,sK3)
| xsd_integer(sK1) ),
inference(copy,[status(thm)],[c_75]) ).
cnf(c_76,plain,
( xsd_integer(sK1)
| xsd_integer(sK1) ),
inference(resolve,[status(thm)],[c_58,c_54]) ).
cnf(c_59,plain,
xsd_integer(sK1),
inference(copy,[status(thm)],[c_76]) ).
cnf(c_60,negated_conjecture,
( rhasHead(sK4,sK5)
| rhasLeader(sK2,sK3) ),
inference(resolve,[status(thm)],[c_59,c_48]) ).
cnf(c_61,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| rhasLeader(sK2,sK3) ),
inference(resolve,[status(thm)],[c_59,c_46]) ).
cnf(c_62,negated_conjecture,
( rhasHead(sK4,sK5)
| ~ rhasHead(sK2,sK3) ),
inference(resolve,[status(thm)],[c_59,c_44]) ).
cnf(c_63,negated_conjecture,
( ~ rhasLeader(sK4,sK5)
| ~ rhasHead(sK2,sK3) ),
inference(resolve,[status(thm)],[c_59,c_42]) ).
cnf(c_64,plain,
( rhasHead(sK2,sK3)
| rhasHead(sK4,sK5) ),
inference(resolve,[status(thm)],[c_60,c_50]) ).
cnf(c_65,plain,
( rhasLeader(sK4,sK5)
| rhasHead(sK2,sK3) ),
inference(resolve,[status(thm)],[c_64,c_49]) ).
cnf(c_66,plain,
( rhasLeader(sK2,sK3)
| rhasHead(sK2,sK3) ),
inference(resolve,[status(thm)],[c_65,c_61]) ).
cnf(c_77,plain,
( rhasHead(sK2,sK3)
| rhasHead(sK2,sK3) ),
inference(resolve,[status(thm)],[c_66,c_50]) ).
cnf(c_67,plain,
rhasHead(sK2,sK3),
inference(copy,[status(thm)],[c_77]) ).
cnf(c_68,negated_conjecture,
~ rhasLeader(sK4,sK5),
inference(resolve,[status(thm)],[c_67,c_63]) ).
cnf(c_69,negated_conjecture,
rhasHead(sK4,sK5),
inference(resolve,[status(thm)],[c_67,c_62]) ).
cnf(c_78,negated_conjecture,
~ rhasHead(sK4,sK5),
inference(resolve,[status(thm)],[c_49,c_68]) ).
cnf(c_71,negated_conjecture,
$false,
inference(resolve,[status(thm)],[c_69,c_78]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : KRS170+1 : TPTP v9.3.1. Released v3.1.0.
% 0.00/0.07 % Command : prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.18/5.45 % Computer : n007.cluster.edu
% 0.18/5.45 % Model : x86_64 x86_64
% 0.18/5.45 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.18/5.45 % Memory : 8046.5625MB
% 0.18/5.45 % OS : Linux 6.8.0-71-generic
% 0.18/5.45 % CPULimit : 300
% 0.18/5.45 % WCLimit : 300
% 0.18/5.45 % DateTime : Fri Sep 25 19:40:29 UTC 2026
% 0.18/5.45 % CPUTime :
% 0.18/5.45 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.18/5.45 % Process 1706834 was started by sandbox on n007,
% 0.18/5.45 % Fri Sep 25 19:40:29 2026
% 0.18/5.45 % The command was "/export/starexec/sandbox/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p".
% 0.18/5.46
% 0.18/5.46 % From the command line: assign(max_seconds, 300).
% 0.18/5.48
% 0.18/5.48 % SZS status Theorem for theBenchmark
% 0.18/5.48
% 0.18/5.48 % Proof 1 at 0.00 (+ 0.00) seconds.
% 0.18/5.48 % Length of proof is 69.
% 0.18/5.48 % Level of proof is 20.
% 0.18/5.48 % Maximum clause weight is 8.000.
% 0.18/5.48 % Given clauses 28.
% 0.18/5.48
% 0.18/5.48 % SZS output start CNFRefutation for theBenchmark
% See solution above
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