%------------------------------------------------------------------------------
% File : FindProof---0.1
% Problem : NUN088+2 : TPTP v9.3.1. Released v7.3.0.
% Transfm : none
% Format : tptp:raw
% Command : run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% Computer : n014.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 02:29:33 PM UTC 2026
% Result : Theorem 3.87s 1.04s
% Output : Proof 3.87s
% Verified :
% SZS Type : Refutation
% Derivation depth : 14
% Number of leaves : 7
% Syntax : Number of formulae : 55 ( 28 unt; 0 def)
% Number of atoms : 124 ( 46 equ)
% Maximal formula atoms : 5 ( 2 avg)
% Number of connectives : 114 ( 45 ~; 27 |; 42 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 9 ( 3 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 5 ( 3 usr; 1 prp; 0-3 aty)
% Number of functors : 12 ( 12 usr; 4 con; 0-2 aty)
% Number of variables : 100 ( 7 sgn 42 !; 21 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f10,axiom,
! [X7,Y10] :
( ~ r2(X7,Y10)
| ! [Y20] :
( Y20 != Y10
| ~ r1(Y20) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_7a) ).
fof(f10_nnf,plain,
! [X7,Y10] :
( ~ r2(X7,Y10)
| ! [Y20] :
( Y20 != Y10
| ~ r1(Y20) ) ),
inference(nnf_transformation,[status(thm)],[f10]) ).
fof(f10_sk,plain,
! [Y20,Y10,X7] :
( ~ r2(X7,Y10)
| Y20 != Y10
| ~ r1(Y20) ),
inference(skolemisation,[status(esa)],[f10_nnf]) ).
cnf(c38,plain,
( ~ r2(X0,X1)
| X2 != X1
| ~ r1(X2) ),
inference(cnf_transformation,[status(esa)],[f10_sk]) ).
fof(f11,conjecture,
! [Y1] :
( ! [Y3] :
( ~ r2(Y3,Y1)
| ~ r1(Y3) )
| ! [Y2] :
( Y2 != Y1
| ~ r1(Y2) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',zerouneqone) ).
fof(f11_neg,negated_conjecture,
~ ! [Y1] :
( ! [Y3] :
( ~ r2(Y3,Y1)
| ~ r1(Y3) )
| ! [Y2] :
( Y2 != Y1
| ~ r1(Y2) ) ),
inference(negated_conjecture,[status(cth)],[f11]) ).
fof(f11_nnf,plain,
? [Y1] :
( ? [Y3] :
( r2(Y3,Y1)
& r1(Y3) )
& ? [Y2] :
( Y2 = Y1
& r1(Y2) ) ),
inference(nnf_transformation,[status(thm)],[f11_neg]) ).
fof(f11_sk,plain,
( r2(sk22,sk20)
& r1(sk22)
& sk21 = sk20
& r1(sk21) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sk20,sk21,sk22])],[f11_nnf]) ).
cnf(c39,plain,
r1(sk21),
inference(cnf_transformation,[status(esa)],[f11_sk]) ).
cnf(p259,plain,
( ~ r2(X1,X0)
| sk0 != X0 ),
inference(resolution,[status(thm)],[c38,c39]) ).
cnf(p262,plain,
~ r2(X0,sk0),
inference(equality_resolution,[status(thm)],[p259]) ).
fof(f2,axiom,
! [X13,X14] :
? [Y22] :
! [X15] :
( ( X15 = Y22
& r3(X13,X14,X15) )
| ( X15 != Y22
& ~ r3(X13,X14,X15) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_3) ).
fof(f2_nnf,plain,
! [X13,X14] :
? [Y22] :
! [X15] :
( ( X15 = Y22
& r3(X13,X14,X15) )
| ( X15 != Y22
& ~ r3(X13,X14,X15) ) ),
inference(nnf_transformation,[status(thm)],[f2]) ).
fof(f2_sk,plain,
! [X13,X14,X15] :
( ( X15 = sk2(X13,X14)
& r3(X13,X14,X15) )
| ( X15 != sk2(X13,X14)
& ~ r3(X13,X14,X15) ) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sk2])],[f2_nnf]) ).
cnf(c9,plain,
( X3 = sk2(X0,X1)
| ~ r3(X0,X1,X3) ),
inference(cnf_transformation,[status(esa)],[f2_sk]) ).
fof(f0,axiom,
? [Y24] :
! [X19] :
( ( X19 = Y24
& r1(X19) )
| ( X19 != Y24
& ~ r1(X19) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_1) ).
fof(f0_nnf,plain,
? [Y24] :
! [X19] :
( ( X19 = Y24
& r1(X19) )
| ( X19 != Y24
& ~ r1(X19) ) ),
inference(nnf_transformation,[status(thm)],[f0]) ).
fof(f0_sk,plain,
! [X19] :
( ( X19 = sk0
& r1(X19) )
| ( X19 != sk0
& ~ r1(X19) ) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sk0])],[f0_nnf]) ).
cnf(c1,plain,
( X1 = sk0
| ~ r1(X1) ),
inference(cnf_transformation,[status(esa)],[f0_sk]) ).
fof(f7,axiom,
! [X4] :
? [Y9] :
( Y9 = X4
& ? [Y16] :
( r3(X4,Y16,Y9)
& r1(Y16) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_4a) ).
fof(f7_nnf,plain,
! [X4] :
? [Y9] :
( Y9 = X4
& ? [Y16] :
( r3(X4,Y16,Y9)
& r1(Y16) ) ),
inference(nnf_transformation,[status(thm)],[f7]) ).
fof(f7_sk,plain,
! [X4] :
( sk12(X4) = X4
& r3(X4,sk13(X4),sk12(X4))
& r1(sk13(X4)) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sk12,sk13])],[f7_nnf]) ).
cnf(c27,plain,
r1(sk13(X0)),
inference(cnf_transformation,[status(esa)],[f7_sk]) ).
cnf(p51,plain,
sk13(X0) = sk0,
inference(resolution,[status(thm)],[c1,c27]) ).
cnf(c28,plain,
r3(X0,sk13(X0),sk12(X0)),
inference(cnf_transformation,[status(esa)],[f7_sk]) ).
cnf(p52,plain,
r3(X0,sk0,sk12(X0)),
inference(demodulation,[status(thm)],[p51,c28]) ).
cnf(p81,plain,
X0 = sk2(X0,sk0),
inference(resolution,[status(thm)],[c9,p52]) ).
fof(f1,axiom,
! [X11] :
? [Y21] :
! [X12] :
( ( X12 = Y21
& r2(X11,X12) )
| ( X12 != Y21
& ~ r2(X11,X12) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_2) ).
fof(f1_nnf,plain,
! [X11] :
? [Y21] :
! [X12] :
( ( X12 = Y21
& r2(X11,X12) )
| ( X12 != Y21
& ~ r2(X11,X12) ) ),
inference(nnf_transformation,[status(thm)],[f1]) ).
fof(f1_sk,plain,
! [X11,X12] :
( ( X12 = sk1(X11)
& r2(X11,X12) )
| ( X12 != sk1(X11)
& ~ r2(X11,X12) ) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sk1])],[f1_nnf]) ).
cnf(c5,plain,
( X2 = sk1(X0)
| ~ r2(X0,X2) ),
inference(cnf_transformation,[status(esa)],[f1_sk]) ).
cnf(c41,plain,
r1(sk22),
inference(cnf_transformation,[status(esa)],[f11_sk]) ).
cnf(p49,plain,
sk22 = sk0,
inference(resolution,[status(thm)],[c1,c41]) ).
cnf(p45,plain,
sk20 = sk0,
inference(resolution,[status(thm)],[c1,c39]) ).
cnf(c42,plain,
r2(sk22,sk20),
inference(cnf_transformation,[status(esa)],[f11_sk]) ).
cnf(p47,plain,
r2(sk22,sk0),
inference(demodulation,[status(thm)],[p45,c42]) ).
cnf(p50,plain,
r2(sk0,sk0),
inference(demodulation,[status(thm)],[p49,p47]) ).
cnf(p64,plain,
sk0 = sk1(sk0),
inference(resolution,[status(thm)],[c5,p50]) ).
fof(f4,axiom,
! [X1,X8] :
? [Y4] :
( ? [Y7] :
( r3(X1,X8,Y7)
& r2(Y7,Y4) )
& ? [Y5] :
( Y5 = Y4
& ? [Y15] :
( r3(X1,Y15,Y5)
& r2(X8,Y15) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_1a) ).
fof(f4_nnf,plain,
! [X1,X8] :
? [Y4] :
( ? [Y7] :
( r3(X1,X8,Y7)
& r2(Y7,Y4) )
& ? [Y5] :
( Y5 = Y4
& ? [Y15] :
( r3(X1,Y15,Y5)
& r2(X8,Y15) ) ) ),
inference(nnf_transformation,[status(thm)],[f4]) ).
fof(f4_sk,plain,
! [X8,X1] :
( r3(X1,X8,sk7(X1,X8))
& r2(sk7(X1,X8),sk4(X1,X8))
& sk5(X1,X8) = sk4(X1,X8)
& r3(X1,sk6(X1,X8),sk5(X1,X8))
& r2(X8,sk6(X1,X8)) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sk4,sk5,sk6,sk7])],[f4_nnf]) ).
cnf(c16,plain,
r2(X1,sk6(X0,X1)),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(p59,plain,
sk6(X0,X1) = sk1(X1),
inference(resolution,[status(thm)],[c5,c16]) ).
cnf(p66,plain,
sk1(sk0) = sk0,
inference(superposition,[status(thm)],[p64,p59]) ).
cnf(c17,plain,
r3(X0,sk6(X0,X1),sk5(X0,X1)),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(p61,plain,
r3(X0,sk1(X1),sk5(X0,X1)),
inference(demodulation,[status(thm)],[p59,c17]) ).
cnf(p68,plain,
r3(X0,sk0,sk4(X0,sk0)),
inference(superposition,[status(thm)],[p66,p61]) ).
cnf(p90,plain,
sk4(X0,sk0) = sk2(X0,sk0),
inference(resolution,[status(thm)],[c9,p68]) ).
cnf(p92,plain,
sk2(X0,sk0) = X0,
inference(superposition,[status(thm)],[p81,p90]) ).
cnf(c20,plain,
r3(X0,X1,sk7(X0,X1)),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(p82,plain,
sk7(X0,X1) = sk2(X0,X1),
inference(resolution,[status(thm)],[c9,c20]) ).
cnf(c19,plain,
r2(sk7(X0,X1),sk4(X0,X1)),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(p83,plain,
r2(sk2(X0,X1),sk4(X0,X1)),
inference(demodulation,[status(thm)],[p82,c19]) ).
cnf(p95,plain,
r2(X0,X0),
inference(superposition,[status(thm)],[p92,p83]) ).
cnf(p269,plain,
$false,
inference(resolution,[status(thm)],[p262,p95]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : NUN088+2 : TPTP v9.3.1. Released v7.3.0.
% 0.00/0.04 % Command : run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.13/0.39 % Computer : n014.cluster.edu
% 0.13/0.39 % Model : x86_64 x86_64
% 0.13/0.39 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.39 % Memory : 8046.5625MB
% 0.13/0.39 % OS : Linux 6.8.0-71-generic
% 0.13/0.39 % CPULimit : 300
% 0.13/0.39 % WCLimit : 300
% 0.13/0.39 % DateTime : Thu Sep 24 06:00:34 UTC 2026
% 0.13/0.39 % CPUTime :
% 0.13/0.40 Running run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 3.87/1.04 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p
% 3.87/1.04 % SZS output start Proof for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
%------------------------------------------------------------------------------