%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : NUM728^1 : TPTP v9.3.1. Released v3.7.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% Computer : n020.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 08:18:41 AM UTC 2026
% Result : Theorem 0.21s 0.28s
% Output : Refutation 0.21s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 3
% Syntax : Number of formulae : 21 ( 14 unt; 0 typ; 0 def)
% Number of atoms : 64 ( 18 equ; 0 cnn)
% Maximal formula atoms : 2 ( 3 avg)
% Number of connectives : 171 ( 10 ~; 4 |; 0 &; 154 @)
% ( 0 <=>; 3 =>; 0 <=; 0 <~>)
% Maximal formula depth : 9 ( 5 avg)
% Number of types : 3 ( 2 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 11 ( 8 usr; 4 con; 0-2 aty)
% Number of variables : 26 ( 0 ^; 26 !; 0 ?; 26 :)
% Comments :
%------------------------------------------------------------------------------
thf(type_def_5,type,
frac: $tType ).
thf(type_def_6,type,
nat: $tType ).
thf(type_def_7,type,
sTfun: ( $tType * $tType ) > $tType ).
thf(func_def_0,type,
x: frac ).
thf(func_def_1,type,
n: nat ).
thf(func_def_2,type,
eq: frac > frac > $o ).
thf(func_def_3,type,
fr: nat > nat > frac ).
thf(func_def_4,type,
ts: nat > nat > nat ).
thf(func_def_5,type,
c1x: frac > nat ).
thf(func_def_6,type,
c2x: frac > nat ).
thf(f1,axiom,
! [X0: frac,X1: frac] :
( ( eq @ X0 @ X1 )
=> ( eq @ X1 @ X0 ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz38) ).
thf(f2,axiom,
! [X0: frac,X1: nat] : ( eq @ X0 @ ( fr @ ( ts @ ( c1x @ X0 ) @ X1 ) @ ( ts @ ( c2x @ X0 ) @ X1 ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz40) ).
thf(f3,conjecture,
eq @ ( fr @ ( ts @ ( c1x @ x ) @ n ) @ ( ts @ ( c2x @ x ) @ n ) ) @ x,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz40a) ).
thf(f4,negated_conjecture,
~ ( eq @ ( fr @ ( ts @ ( c1x @ x ) @ n ) @ ( ts @ ( c2x @ x ) @ n ) ) @ x ),
inference(negated_conjecture,[status(cth)],[f3]) ).
thf(f5,plain,
! [X0: frac,X1: frac] :
( ( eq @ X0 @ X1 )
=> ( eq @ X1 @ X0 ) ),
inference(rectify,[],[f1]) ).
thf(f6,plain,
! [X1: frac,X0: frac] :
( ( ( eq @ X0 @ X1 )
= $true )
=> ( ( eq @ X1 @ X0 )
= $true ) ),
inference(fool_elimination,[],[f5]) ).
thf(f7,plain,
! [X0: frac,X1: nat] : ( eq @ X0 @ ( fr @ ( ts @ ( c1x @ X0 ) @ X1 ) @ ( ts @ ( c2x @ X0 ) @ X1 ) ) ),
inference(rectify,[],[f2]) ).
thf(f8,plain,
! [X1: nat,X0: frac] :
( ( eq @ X0 @ ( fr @ ( ts @ ( c1x @ X0 ) @ X1 ) @ ( ts @ ( c2x @ X0 ) @ X1 ) ) )
= $true ),
inference(fool_elimination,[],[f7]) ).
thf(f9,plain,
~ ( eq @ ( fr @ ( ts @ ( c1x @ x ) @ n ) @ ( ts @ ( c2x @ x ) @ n ) ) @ x ),
inference(rectify,[],[f4]) ).
thf(f10,plain,
( ( eq @ ( fr @ ( ts @ ( c1x @ x ) @ n ) @ ( ts @ ( c2x @ x ) @ n ) ) @ x )
!= $true ),
inference(fool_elimination,[],[f9]) ).
thf(f11,plain,
( ( eq @ ( fr @ ( ts @ ( c1x @ x ) @ n ) @ ( ts @ ( c2x @ x ) @ n ) ) @ x )
!= $true ),
inference(flattening,[],[f10]) ).
thf(f12,plain,
! [X1: frac,X0: frac] :
( ( ( eq @ X1 @ X0 )
= $true )
| ( ( eq @ X0 @ X1 )
!= $true ) ),
inference(ennf_transformation,[],[f6]) ).
thf(f13,plain,
! [X0: nat,X1: frac] :
( ( eq @ X1 @ ( fr @ ( ts @ ( c1x @ X1 ) @ X0 ) @ ( ts @ ( c2x @ X1 ) @ X0 ) ) )
= $true ),
inference(rectify,[],[f8]) ).
thf(f14,plain,
! [X0: frac,X1: frac] :
( ( ( eq @ X0 @ X1 )
= $true )
| ( ( eq @ X1 @ X0 )
!= $true ) ),
inference(rectify,[],[f12]) ).
thf(f15,plain,
! [X0: nat,X1: frac] :
( ( eq @ X1 @ ( fr @ ( ts @ ( c1x @ X1 ) @ X0 ) @ ( ts @ ( c2x @ X1 ) @ X0 ) ) )
= $true ),
inference(cnf_transformation,[],[f13]) ).
thf(f16,plain,
! [X0: frac,X1: frac] :
( ( ( eq @ X1 @ X0 )
!= $true )
| ( ( eq @ X0 @ X1 )
= $true ) ),
inference(cnf_transformation,[],[f14]) ).
thf(f17,plain,
( ( eq @ ( fr @ ( ts @ ( c1x @ x ) @ n ) @ ( ts @ ( c2x @ x ) @ n ) ) @ x )
!= $true ),
inference(cnf_transformation,[],[f11]) ).
thf(f19,plain,
! [X0: frac,X1: nat] :
( ( $true != $true )
| ( $true
= ( eq @ ( fr @ ( ts @ ( c1x @ X0 ) @ X1 ) @ ( ts @ ( c2x @ X0 ) @ X1 ) ) @ X0 ) ) ),
inference(superposition,[],[f16,f15]) ).
thf(f20,plain,
! [X0: frac,X1: nat] :
( $true
= ( eq @ ( fr @ ( ts @ ( c1x @ X0 ) @ X1 ) @ ( ts @ ( c2x @ X0 ) @ X1 ) ) @ X0 ) ),
inference(trivial_inequality_removal,[],[f19]) ).
thf(f22,plain,
$true != $true,
inference(superposition,[],[f17,f20]) ).
thf(f23,plain,
$false,
inference(trivial_inequality_removal,[],[f22]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : NUM728^1 : TPTP v9.3.1. Released v3.7.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.10/0.19 % Computer : n020.cluster.edu
% 0.10/0.19 % Model : x86_64 x86_64
% 0.10/0.19 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.19 % Memory : 8046.5625MB
% 0.10/0.19 % OS : Linux 6.8.0-71-generic
% 0.10/0.19 % CPULimit : 300
% 0.10/0.19 % WCLimit : 300
% 0.10/0.19 % DateTime : Tue Sep 29 12:46:34 UTC 2026
% 0.10/0.19 % CPUTime :
% 0.10/0.19 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.10/0.23 Running higher-order theorem proving
% 0.10/0.24 Running: /export/starexec/sandbox/solver/bin/vampire-ho --input_syntax tptp --output_axiom_names on --mode casc -m 16384 --cores 7 -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.21/0.28 % (998636)Detected a higher-order problem, will run a greedy HOL sequence.
% 0.21/0.28 % (998645)dis+21_4_fde=none:e2e=on:si=on:uwa=off:foolp=on:random_seed=284080233:i=24:av=off:rtra=on_2999 on theBenchmark for (2999ds/24Mi)
% 0.21/0.28 % (998645) found proof, printing to "/export/starexec/sandbox/tmp/vampire-proof-998636-998645"...
% 0.21/0.28 % (998645)...printing done.
% 0.21/0.28 % (998645)Refutation found. Thanks to Tanya!
% 0.21/0.28 % SZS status Theorem for theBenchmark
% 0.21/0.28 % SZS output start Proof for theBenchmark
% See solution above
% 0.21/0.28 % (998645)------------------------------
% 0.21/0.28 % (998645)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.21/0.28 % (998645)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.21/0.28 % (998645)CaDiCaL version: 2.1.3
% 0.21/0.28 % (998645)Termination reason: Refutation
% 0.21/0.28 % (998645)Time elapsed: 0.001 s
% 0.21/0.28 % (998645)Peak memory usage: 12 MB
% 0.21/0.28 % (998645)Instructions burned: 2 (million)
% 0.21/0.28 % (998636)Success in time 0.03 s
% 0.21/0.28 % Vampire exiting
%------------------------------------------------------------------------------