%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : SYO282^5 : TPTP v9.3.1. Released v4.0.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 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 : Wed Sep 30 08:47:21 AM UTC 2026
% Result : Theorem 0.22s 0.28s
% Output : Refutation 0.22s
% Verified :
% SZS Type : Refutation
% Derivation depth : 7
% Number of leaves : 1
% Syntax : Number of formulae : 9 ( 3 unt; 0 typ; 0 def)
% Number of atoms : 21 ( 8 equ; 0 cnn)
% Maximal formula atoms : 2 ( 2 avg)
% Number of connectives : 26 ( 6 ~; 0 |; 2 &; 14 @)
% ( 0 <=>; 4 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 4 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 5 ( 5 >; 0 *; 0 +; 0 <<)
% Number of symbols : 6 ( 3 usr; 3 con; 0-2 aty)
% Number of variables : 17 ( 0 ^; 7 !; 10 ?; 17 :)
% Comments :
%------------------------------------------------------------------------------
thf(type_def_5,type,
b: $tType ).
thf(type_def_6,type,
sTfun: ( $tType * $tType ) > $tType ).
thf(func_def_3,type,
sK0: b > $o ).
thf(func_def_4,type,
sK1: b ).
thf(f1,conjecture,
! [X0: b > $o] :
? [X1: b] :
( ? [X2: b] : ( X0 @ X2 )
=> ( X0 @ X1 ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cL51) ).
thf(f2,negated_conjecture,
~ ! [X0: b > $o] :
? [X1: b] :
( ? [X2: b] : ( X0 @ X2 )
=> ( X0 @ X1 ) ),
inference(negated_conjecture,[status(cth)],[f1]) ).
thf(f3,plain,
~ ! [X0: b > $o] :
? [X1: b] :
( ? [X2: b] : ( X0 @ X2 )
=> ( X0 @ X1 ) ),
inference(rectify,[],[f2]) ).
thf(f4,plain,
~ ! [X0: b > $o] :
? [X1: b] :
( ? [X2: b] :
( ( X0 @ X2 )
= $true )
=> ( ( X0 @ X1 )
= $true ) ),
inference(fool_elimination,[],[f3]) ).
thf(f5,plain,
? [X0: b > $o] :
! [X1: b] :
( ( ( X0 @ X1 )
!= $true )
& ? [X2: b] :
( ( X0 @ X2 )
= $true ) ),
inference(ennf_transformation,[],[f4]) ).
thf(f6,plain,
! [X1: b] :
( ( $true
!= ( sK0 @ X1 ) )
& ( ( sK0 @ sK1 )
= $true ) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1]),skolemize(X0,sK0),skolemize(X2,sK1)],[f5]) ).
thf(f7,plain,
( ( sK0 @ sK1 )
= $true ),
inference(cnf_transformation,[],[f6]) ).
thf(f8,plain,
! [X1: b] :
( $true
!= ( sK0 @ X1 ) ),
inference(cnf_transformation,[],[f6]) ).
thf(f11,plain,
$false,
inference(forward_subsumption_resolution,[],[f7,f8]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : SYO282^5 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.08/0.20 % Computer : n014.cluster.edu
% 0.08/0.20 % Model : x86_64 x86_64
% 0.08/0.20 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.20 % Memory : 8046.5625MB
% 0.08/0.20 % OS : Linux 6.8.0-71-generic
% 0.08/0.20 % CPULimit : 300
% 0.08/0.20 % WCLimit : 300
% 0.08/0.20 % DateTime : Tue Sep 29 16:42:45 UTC 2026
% 0.08/0.20 % CPUTime :
% 0.08/0.20 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.08/0.24 Running higher-order theorem proving
% 0.08/0.25 Running: /export/starexec/sandbox2/solver/bin/vampire-ho --input_syntax tptp --output_axiom_names on --mode casc -m 16384 --cores 7 -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.22/0.28 % (2907239)Detected a higher-order problem, will run a greedy HOL sequence.
% 0.22/0.28 % (2907255)lrs+10_1_to=lpo:sil=128000:e2e=on:si=on:random_seed=2204719699:s2a=on:i=75:s2at=3:aac=none:bd=preordered:rtra=on:fe=abstraction_2999 on theBenchmark for (2999ds/75Mi)
% 0.22/0.28 % (2907255) found proof, printing to "/export/starexec/sandbox2/tmp/vampire-proof-2907239-2907255"...
% 0.22/0.28 % (2907255)...printing done.
% 0.22/0.28 % (2907255)Refutation found. Thanks to Tanya!
% 0.22/0.28 % SZS status Theorem for theBenchmark
% 0.22/0.28 % SZS output start Proof for theBenchmark
% See solution above
% 0.22/0.28 % (2907255)------------------------------
% 0.22/0.28 % (2907255)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.22/0.28 % (2907255)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.22/0.28 % (2907255)CaDiCaL version: 2.1.3
% 0.22/0.28 % (2907255)Termination reason: Refutation
% 0.22/0.28 % (2907255)Time elapsed: 0.001 s
% 0.22/0.28 % (2907255)Peak memory usage: 12 MB
% 0.22/0.28 % (2907239)Success in time 0.026 s
% 0.22/0.28 % Vampire exiting
%------------------------------------------------------------------------------