%------------------------------------------------------------------------------
% File : Vampire-SAT---5.0.1
% Problem : NUM686^1 : TPTP v9.3.1. Released v3.7.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% Computer : n013.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 : Wed Sep 30 08:19:18 AM UTC 2026
% Result : Theorem 0.08s 0.25s
% Output : Refutation 0.08s
% Verified :
% SZS Type : Refutation
% Derivation depth : 13
% Number of leaves : 6
% Syntax : Number of formulae : 43 ( 18 unt; 0 typ; 0 def)
% Number of atoms : 229 ( 51 equ; 0 cnn)
% Maximal formula atoms : 6 ( 5 avg)
% Number of connectives : 377 ( 23 ~; 17 |; 0 &; 328 @)
% ( 0 <=>; 9 =>; 0 <=; 0 <~>)
% Maximal formula depth : 12 ( 5 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 13 ( 10 usr; 6 con; 0-4 aty)
% Number of variables : 94 ( 42 ^; 52 !; 0 ?; 94 :)
% Comments :
%------------------------------------------------------------------------------
thf(type_def_5,type,
nat: $tType ).
thf(type_def_6,type,
sTfun: ( $tType * $tType ) > $tType ).
thf(func_def_0,type,
x: nat ).
thf(func_def_1,type,
y: nat ).
thf(func_def_2,type,
z: nat ).
thf(func_def_3,type,
u: nat ).
thf(func_def_4,type,
some: ( nat > $o ) > $o ).
thf(func_def_5,type,
diffprop: nat > nat > nat > $o ).
thf(func_def_7,type,
pl: nat > nat > nat ).
thf(func_def_8,type,
db0:
!>[X0: $tType] : X0 ).
thf(func_def_9,type,
vLAM:
!>[X0: $tType,X1: $tType] : ( X1 > X0 > X1 ) ).
thf(f1,axiom,
( some
@ ^ [X0: nat] : ( diffprop @ x @ y @ X0 ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',m) ).
thf(f2,axiom,
( some
@ ^ [X0: nat] : ( diffprop @ z @ u @ X0 ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',n) ).
thf(f3,axiom,
! [X0: nat,X1: nat,X2: nat] :
( ( some
@ ^ [X3: nat] : ( diffprop @ X1 @ X0 @ X3 ) )
=> ( ( some
@ ^ [X3: nat] : ( diffprop @ X2 @ X1 @ X3 ) )
=> ( some
@ ^ [X3: nat] : ( diffprop @ X2 @ X0 @ X3 ) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz15) ).
thf(f4,axiom,
! [X0: nat,X1: nat,X2: nat] :
( ( some
@ ^ [X3: nat] : ( diffprop @ X0 @ X1 @ X3 ) )
=> ( some
@ ^ [X3: nat] : ( diffprop @ ( pl @ X0 @ X2 ) @ ( pl @ X1 @ X2 ) @ X3 ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz19a) ).
thf(f5,axiom,
! [X0: nat,X1: nat] :
( ( pl @ X0 @ X1 )
= ( pl @ X1 @ X0 ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz6) ).
thf(f6,conjecture,
( some
@ ^ [X0: nat] : ( diffprop @ ( pl @ x @ z ) @ ( pl @ y @ u ) @ X0 ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz21) ).
thf(f7,negated_conjecture,
~ ( some
@ ^ [X0: nat] : ( diffprop @ ( pl @ x @ z ) @ ( pl @ y @ u ) @ X0 ) ),
inference(negated_conjecture,[status(cth)],[f6]) ).
thf(f8,plain,
( some
@ ^ [X0: nat] : ( diffprop @ x @ y @ X0 ) ),
inference(rectify,[],[f1]) ).
thf(f9,plain,
( ( some
@ ^ [Y0: nat] : ( diffprop @ x @ y @ Y0 ) )
= $true ),
inference(fool_elimination,[],[f8]) ).
thf(f10,plain,
( some
@ ^ [X0: nat] : ( diffprop @ z @ u @ X0 ) ),
inference(rectify,[],[f2]) ).
thf(f11,plain,
( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ z @ u @ Y0 ) ) ),
inference(fool_elimination,[],[f10]) ).
thf(f12,plain,
! [X0: nat,X1: nat,X2: nat] :
( ( some
@ ^ [X3: nat] : ( diffprop @ X1 @ X0 @ X3 ) )
=> ( ( some
@ ^ [X4: nat] : ( diffprop @ X2 @ X1 @ X4 ) )
=> ( some
@ ^ [X5: nat] : ( diffprop @ X2 @ X0 @ X5 ) ) ) ),
inference(rectify,[],[f3]) ).
thf(f13,plain,
! [X0: nat,X1: nat,X2: nat] :
( ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ X1 @ X0 @ Y0 ) ) )
=> ( ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ X2 @ X1 @ Y0 ) ) )
=> ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ X2 @ X0 @ Y0 ) ) ) ) ),
inference(fool_elimination,[],[f12]) ).
thf(f14,plain,
! [X0: nat,X1: nat,X2: nat] :
( ( some
@ ^ [X3: nat] : ( diffprop @ X0 @ X1 @ X3 ) )
=> ( some
@ ^ [X4: nat] : ( diffprop @ ( pl @ X0 @ X2 ) @ ( pl @ X1 @ X2 ) @ X4 ) ) ),
inference(rectify,[],[f4]) ).
thf(f15,plain,
! [X0: nat,X1: nat,X2: nat] :
( ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ X0 @ X1 @ Y0 ) ) )
=> ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ ( pl @ X0 @ X2 ) @ ( pl @ X1 @ X2 ) @ Y0 ) ) ) ),
inference(fool_elimination,[],[f14]) ).
thf(f16,plain,
~ ( some
@ ^ [X0: nat] : ( diffprop @ ( pl @ x @ z ) @ ( pl @ y @ u ) @ X0 ) ),
inference(rectify,[],[f7]) ).
thf(f17,plain,
( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ ( pl @ x @ z ) @ ( pl @ y @ u ) @ Y0 ) ) ),
inference(fool_elimination,[],[f16]) ).
thf(f18,plain,
( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ ( pl @ x @ z ) @ ( pl @ y @ u ) @ Y0 ) ) ),
inference(flattening,[],[f17]) ).
thf(f19,plain,
! [X0: nat,X1: nat,X2: nat] :
( ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ X2 @ X0 @ Y0 ) ) )
| ( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ X2 @ X1 @ Y0 ) ) )
| ( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ X1 @ X0 @ Y0 ) ) ) ),
inference(ennf_transformation,[],[f13]) ).
thf(f20,plain,
! [X0: nat,X1: nat,X2: nat] :
( ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ X2 @ X0 @ Y0 ) ) )
| ( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ X2 @ X1 @ Y0 ) ) )
| ( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ X1 @ X0 @ Y0 ) ) ) ),
inference(flattening,[],[f19]) ).
thf(f21,plain,
! [X0: nat,X1: nat,X2: nat] :
( ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ ( pl @ X0 @ X2 ) @ ( pl @ X1 @ X2 ) @ Y0 ) ) )
| ( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ X0 @ X1 @ Y0 ) ) ) ),
inference(ennf_transformation,[],[f15]) ).
thf(f22,plain,
( ( some
@ ^ [Y0: nat] : ( diffprop @ x @ y @ Y0 ) )
= $true ),
inference(cnf_transformation,[],[f9]) ).
thf(f23,plain,
( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ z @ u @ Y0 ) ) ),
inference(cnf_transformation,[],[f11]) ).
thf(f24,plain,
! [X2: nat,X0: nat,X1: nat] :
( ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ X2 @ X0 @ Y0 ) ) )
| ( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ X2 @ X1 @ Y0 ) ) )
| ( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ X1 @ X0 @ Y0 ) ) ) ),
inference(cnf_transformation,[],[f20]) ).
thf(f25,plain,
! [X2: nat,X0: nat,X1: nat] :
( ( $true
= ( some
@ ^ [Y0: nat] : ( diffprop @ ( pl @ X0 @ X2 ) @ ( pl @ X1 @ X2 ) @ Y0 ) ) )
| ( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ X0 @ X1 @ Y0 ) ) ) ),
inference(cnf_transformation,[],[f21]) ).
thf(f26,plain,
! [X0: nat,X1: nat] :
( ( pl @ X0 @ X1 )
= ( pl @ X1 @ X0 ) ),
inference(cnf_transformation,[],[f5]) ).
thf(f27,plain,
( $true
!= ( some
@ ^ [Y0: nat] : ( diffprop @ ( pl @ x @ z ) @ ( pl @ y @ u ) @ Y0 ) ) ),
inference(cnf_transformation,[],[f18]) ).
thf(f30,plain,
( $true
!= ( some @ ( diffprop @ ( pl @ x @ z ) @ ( pl @ y @ u ) ) ) ),
inference(beta-eta_normalization,[],[f27]) ).
thf(f31,plain,
! [X2: nat,X0: nat,X1: nat] :
( ( $true
!= ( some @ ( diffprop @ X0 @ X1 ) ) )
| ( $true
= ( some @ ( diffprop @ ( pl @ X0 @ X2 ) @ ( pl @ X1 @ X2 ) ) ) ) ),
inference(beta-eta_normalization,[],[f25]) ).
thf(f32,plain,
! [X2: nat,X0: nat,X1: nat] :
( ( $true
!= ( some @ ( diffprop @ X2 @ X1 ) ) )
| ( $true
= ( some @ ( diffprop @ X2 @ X0 ) ) )
| ( $true
!= ( some @ ( diffprop @ X1 @ X0 ) ) ) ),
inference(beta-eta_normalization,[],[f24]) ).
thf(f33,plain,
( $true
= ( some @ ( diffprop @ z @ u ) ) ),
inference(beta-eta_normalization,[],[f23]) ).
thf(f34,plain,
( $true
= ( some @ ( diffprop @ x @ y ) ) ),
inference(beta-eta_normalization,[],[f22]) ).
thf(f49,plain,
! [X0: nat] :
( ( $true != $true )
| ( $true
= ( some @ ( diffprop @ ( pl @ z @ X0 ) @ ( pl @ u @ X0 ) ) ) ) ),
inference(constrained_superposition,[],[f31,f33]) ).
thf(f50,plain,
! [X0: nat] :
( ( $true != $true )
| ( $true
= ( some @ ( diffprop @ ( pl @ x @ X0 ) @ ( pl @ y @ X0 ) ) ) ) ),
inference(constrained_superposition,[],[f31,f34]) ).
thf(f51,plain,
! [X0: nat] :
( $true
= ( some @ ( diffprop @ ( pl @ x @ X0 ) @ ( pl @ y @ X0 ) ) ) ),
inference(trivial_inequality_removal,[],[f50]) ).
thf(f52,plain,
! [X0: nat] :
( $true
= ( some @ ( diffprop @ ( pl @ z @ X0 ) @ ( pl @ u @ X0 ) ) ) ),
inference(trivial_inequality_removal,[],[f49]) ).
thf(f62,plain,
! [X0: nat,X1: nat] :
( ( $true != $true )
| ( $true
= ( some @ ( diffprop @ ( pl @ x @ X0 ) @ X1 ) ) )
| ( $true
!= ( some @ ( diffprop @ ( pl @ y @ X0 ) @ X1 ) ) ) ),
inference(constrained_superposition,[],[f32,f51]) ).
thf(f67,plain,
! [X0: nat,X1: nat] :
( ( $true
!= ( some @ ( diffprop @ ( pl @ y @ X0 ) @ X1 ) ) )
| ( $true
= ( some @ ( diffprop @ ( pl @ x @ X0 ) @ X1 ) ) ) ),
inference(trivial_inequality_removal,[],[f62]) ).
thf(f71,plain,
! [X0: nat] :
( $true
= ( some @ ( diffprop @ ( pl @ X0 @ z ) @ ( pl @ u @ X0 ) ) ) ),
inference(constrained_superposition,[],[f52,f26]) ).
thf(f272,plain,
( ( $true != $true )
| ( $true
= ( some @ ( diffprop @ ( pl @ x @ z ) @ ( pl @ u @ y ) ) ) ) ),
inference(constrained_superposition,[],[f67,f71]) ).
thf(f273,plain,
( $true
= ( some @ ( diffprop @ ( pl @ x @ z ) @ ( pl @ u @ y ) ) ) ),
inference(trivial_inequality_removal,[],[f272]) ).
thf(f280,plain,
( $true
= ( some @ ( diffprop @ ( pl @ x @ z ) @ ( pl @ y @ u ) ) ) ),
inference(forward_demodulation,[],[f273,f26]) ).
thf(f281,plain,
$false,
inference(forward_subsumption_resolution,[],[f280,f30]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : NUM686^1 : TPTP v9.3.1. Released v3.7.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% 0.08/0.17 % Computer : n013.cluster.edu
% 0.08/0.17 % Model : x86_64 x86_64
% 0.08/0.17 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.17 % Memory : 8046.5625MB
% 0.08/0.17 % OS : Linux 6.8.0-71-generic
% 0.08/0.17 % CPULimit : 300
% 0.08/0.17 % WCLimit : 300
% 0.08/0.17 % DateTime : Tue Sep 29 12:37:21 UTC 2026
% 0.08/0.17 % CPUTime :
% 0.08/0.17 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% 0.08/0.20 Running first-order model finding
% 0.08/0.20 Running: /export/starexec/sandbox/solver/bin/vampire-ho --input_syntax tptp --output_axiom_names on --mode casc --intent sat -m 16384 --cores 7 -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.08/0.25 % (2041628)Will run a generic schedule for satisfiability detection.
% 0.08/0.25 % (2041636)dis+10_1_sil=32000:sp=arity:random_seed=3178176438:i=103:fgj=on_2999 on theBenchmark for (2999ds/103Mi)
% 0.08/0.25 % (2041634)% WARNING: option uhcvi not known.
% 0.08/0.25 % (2041633)fmb+10_1_sas=cadical:bce=on:rp=on:random_seed=313247568_2999 on theBenchmark for (2999ds/0Mi)
% 0.08/0.25 % (2041634)dis+11_61:31_drc=ordering:lsd=5:bsr=unit_only:rp=on:newcnf=on:random_seed=546102311:i=135531:add=off:rawr=on_2999 on theBenchmark for (2999ds/135531Mi)
% 0.08/0.25 % (2041635)dis+10_161_sil=256000:plsq=on:plsqr=61199697,1048576:gs=on:alpa=true:sac=on:slsq=on:cn=on:random_seed=570600848:i=88024:add=on:rawr=on_2999 on theBenchmark for (2999ds/88024Mi)
% 0.08/0.25 % (2041639)ott-3_16_to=lpo:sil=16000:sp=arity:fd=off:rp=on:random_seed=3213620606:i=159:bs=unit_only:nicw=on:fsr=off:amm=off_2999 on theBenchmark for (2999ds/159Mi)
% 0.08/0.25 % (2041638)ott+1_1_to=lpo:sil=16000:sp=reverse_arity:erd=off:random_seed=1044445737:i=131_2999 on theBenchmark for (2999ds/131Mi)
% 0.08/0.25 % (2041634)WARNING: Not using 'newcnf' as currently not compatible with higher-order inputs.
% 0.08/0.25 % Exception at run slice level
% 0.08/0.25 User error: Finite model building is currently not compatible with polymorphism or higher-order constructs
% 0.08/0.25 % (2041634)WARNING: Look ahead literal selection is not currently compatible with higher-order. Ignoring request to use
% 0.08/0.25 % (2041636) found proof, printing to "/export/starexec/sandbox/tmp/vampire-proof-2041628-2041636"...
% 0.08/0.25 % (2041636)...printing done.
% 0.08/0.25 % (2041636)Refutation found. Thanks to Tanya!
% 0.08/0.25 % SZS status Theorem for theBenchmark
% 0.08/0.25 % SZS output start Proof for theBenchmark
% See solution above
% 0.08/0.25 % (2041636)------------------------------
% 0.08/0.25 % (2041636)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.08/0.25 % (2041636)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.08/0.25 % (2041636)CaDiCaL version: 2.1.3
% 0.08/0.25 % (2041636)Termination reason: Refutation
% 0.08/0.25 % (2041636)Time elapsed: 0.009 s
% 0.08/0.25 % (2041636)Peak memory usage: 12 MB
% 0.08/0.25 % (2041636)Instructions burned: 28 (million)
% 0.08/0.25 % (2041628)Success in time 0.036 s
% 0.08/0.25 % Vampire exiting
%------------------------------------------------------------------------------