%------------------------------------------------------------------------------
% File : Vampire-SAT---5.0.1
% Problem : SEU608^2 : TPTP v9.3.1. Released v3.7.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 SAT
% Computer : n002.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 08:32:39 AM UTC 2026
% Result : Theorem 0.08s 0.23s
% Output : Refutation 0.08s
% Verified :
% SZS Type : Refutation
% Derivation depth : 20
% Number of leaves : 2
% Syntax : Number of formulae : 27 ( 17 unt; 0 typ; 0 def)
% Number of atoms : 152 ( 34 equ; 0 cnn)
% Maximal formula atoms : 3 ( 5 avg)
% Number of connectives : 227 ( 21 ~; 3 |; 4 &; 163 @)
% ( 0 <=>; 21 =>; 0 <=; 0 <~>)
% Maximal formula depth : 11 ( 4 avg)
% Number of types : 2 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 18 ( 14 usr; 7 con; 0-4 aty)
% ( 15 !!; 0 ??; 0 @@+; 0 @@-)
% Number of variables : 60 ( 18 ^; 39 !; 3 ?; 60 :)
% Comments :
%------------------------------------------------------------------------------
thf(type_def_5,type,
sTfun: ( $tType * $tType ) > $tType ).
thf(func_def_0,type,
in: $i > $i > $o ).
thf(func_def_1,type,
setminus: $i > $i > $i ).
thf(func_def_2,type,
setminusER: $o ).
thf(func_def_4,type,
vPI:
!>[X0: $tType] : ( ( X0 > $o ) > $o ) ).
thf(func_def_5,type,
vIMP: $o > $o > $o ).
thf(func_def_6,type,
db2:
!>[X0: $tType] : X0 ).
thf(func_def_7,type,
db0:
!>[X0: $tType] : X0 ).
thf(func_def_8,type,
db1:
!>[X0: $tType] : X0 ).
thf(func_def_9,type,
vNOT: $o > $o ).
thf(func_def_10,type,
vLAM:
!>[X0: $tType,X1: $tType] : ( X1 > X0 > X1 ) ).
thf(f1,axiom,
( setminusER
= ( ! [X0: $i,X1: $i,X2: $i] :
( ( in @ X2 @ ( setminus @ X0 @ X1 ) )
=> ~ ( in @ X2 @ X1 ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',setminusER) ).
thf(f2,conjecture,
( setminusER
=> ! [X0: $i,X1: $i,X2: $i] :
( ( in @ X2 @ X1 )
=> ~ ( in @ X2 @ ( setminus @ X0 @ X1 ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',setminusIRneg) ).
thf(f3,negated_conjecture,
~ ( setminusER
=> ! [X0: $i,X1: $i,X2: $i] :
( ( in @ X2 @ X1 )
=> ~ ( in @ X2 @ ( setminus @ X0 @ X1 ) ) ) ),
inference(negated_conjecture,[status(cth)],[f2]) ).
thf(f4,plain,
( setminusER
= ( ! [X0: $i,X1: $i,X2: $i] :
( ( in @ X2 @ ( setminus @ X0 @ X1 ) )
=> ~ ( in @ X2 @ X1 ) ) ) ),
inference(rectify,[],[f1]) ).
thf(f5,plain,
( setminusER
= ( !! @ $i
@ ^ [Y0: $i] :
( !! @ $i
@ ^ [Y1: $i] :
( !! @ $i
@ ^ [Y2: $i] :
( ( in @ Y0 @ ( setminus @ Y2 @ Y1 ) )
=> ~ ( in @ Y0 @ Y1 ) ) ) ) ) ),
inference(fool_elimination,[],[f4]) ).
thf(f6,plain,
~ ( setminusER
=> ! [X0: $i,X1: $i,X2: $i] :
( ( in @ X2 @ X1 )
=> ~ ( in @ X2 @ ( setminus @ X0 @ X1 ) ) ) ),
inference(rectify,[],[f3]) ).
thf(f7,plain,
~ ( ( setminusER = $true )
=> ! [X0: $i,X1: $i,X2: $i] :
( ( ( in @ X2 @ X1 )
= $true )
=> ( ( in @ X2 @ ( setminus @ X0 @ X1 ) )
!= $true ) ) ),
inference(fool_elimination,[],[f6]) ).
thf(f8,plain,
~ ( ( setminusER = $true )
=> ! [X0: $i,X1: $i,X2: $i] :
( ( ( in @ X2 @ X1 )
= $true )
=> ( ( in @ X2 @ ( setminus @ X0 @ X1 ) )
!= $true ) ) ),
inference(flattening,[],[f7]) ).
thf(f9,plain,
( ? [X0: $i,X1: $i,X2: $i] :
( ( ( in @ X2 @ ( setminus @ X0 @ X1 ) )
= $true )
& ( ( in @ X2 @ X1 )
= $true ) )
& ( setminusER = $true ) ),
inference(ennf_transformation,[],[f8]) ).
thf(f10,plain,
( ( $true
= ( in @ sK2 @ ( setminus @ sK0 @ sK1 ) ) )
& ( $true
= ( in @ sK2 @ sK1 ) )
& ( setminusER = $true ) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1,sK2]),skolemize(X0,sK0),skolemize(X1,sK1),skolemize(X2,sK2)],[f9]) ).
thf(f11,plain,
( setminusER
= ( !! @ $i
@ ^ [Y0: $i] :
( !! @ $i
@ ^ [Y1: $i] :
( !! @ $i
@ ^ [Y2: $i] :
( ( in @ Y0 @ ( setminus @ Y2 @ Y1 ) )
=> ~ ( in @ Y0 @ Y1 ) ) ) ) ) ),
inference(cnf_transformation,[],[f5]) ).
thf(f12,plain,
setminusER = $true,
inference(cnf_transformation,[],[f10]) ).
thf(f13,plain,
( $true
= ( in @ sK2 @ sK1 ) ),
inference(cnf_transformation,[],[f10]) ).
thf(f14,plain,
( $true
= ( in @ sK2 @ ( setminus @ sK0 @ sK1 ) ) ),
inference(cnf_transformation,[],[f10]) ).
thf(f17,plain,
( ( !! @ $i
@ ^ [Y0: $i] :
( !! @ $i
@ ^ [Y1: $i] :
( !! @ $i
@ ^ [Y2: $i] :
( ( in @ Y0 @ ( setminus @ Y2 @ Y1 ) )
=> ~ ( in @ Y0 @ Y1 ) ) ) ) )
= $true ),
inference(definition_unfolding,[],[f11,f12]) ).
thf(f18,plain,
! [X1: $i] :
( $true
= ( ^ [Y0: $i] :
( !! @ $i
@ ^ [Y1: $i] :
( !! @ $i
@ ^ [Y2: $i] :
( ( in @ Y0 @ ( setminus @ Y2 @ Y1 ) )
=> ~ ( in @ Y0 @ Y1 ) ) ) )
@ X1 ) ),
inference(pi_proxy_clausification,[],[f17]) ).
thf(f19,plain,
! [X1: $i] :
( $true
= ( !! @ $i
@ ^ [Y0: $i] :
( !! @ $i
@ ^ [Y1: $i] :
( ( in @ X1 @ ( setminus @ Y1 @ Y0 ) )
=> ~ ( in @ X1 @ Y0 ) ) ) ) ),
inference(beta-eta_normalization,[],[f18]) ).
thf(f20,plain,
! [X2: $i,X1: $i] :
( $true
= ( ^ [Y0: $i] :
( !! @ $i
@ ^ [Y1: $i] :
( ( in @ X1 @ ( setminus @ Y1 @ Y0 ) )
=> ~ ( in @ X1 @ Y0 ) ) )
@ X2 ) ),
inference(pi_proxy_clausification,[],[f19]) ).
thf(f21,plain,
! [X2: $i,X1: $i] :
( $true
= ( !! @ $i
@ ^ [Y0: $i] :
( ( in @ X1 @ ( setminus @ Y0 @ X2 ) )
=> ~ ( in @ X1 @ X2 ) ) ) ),
inference(beta-eta_normalization,[],[f20]) ).
thf(f22,plain,
! [X2: $i,X3: $i,X1: $i] :
( $true
= ( ^ [Y0: $i] :
( ( in @ X1 @ ( setminus @ Y0 @ X2 ) )
=> ~ ( in @ X1 @ X2 ) )
@ X3 ) ),
inference(pi_proxy_clausification,[],[f21]) ).
thf(f23,plain,
! [X2: $i,X3: $i,X1: $i] :
( $true
= ( ( in @ X1 @ ( setminus @ X3 @ X2 ) )
=> ~ ( in @ X1 @ X2 ) ) ),
inference(beta-eta_normalization,[],[f22]) ).
thf(f24,plain,
! [X2: $i,X3: $i,X1: $i] :
( ( $false
= ( in @ X1 @ ( setminus @ X3 @ X2 ) ) )
| ( $true
= ( ~ ( in @ X1 @ X2 ) ) ) ),
inference(imp_proxy_clausification,[],[f23]) ).
thf(f25,plain,
! [X2: $i,X3: $i,X1: $i] :
( ( $false
= ( in @ X1 @ ( setminus @ X3 @ X2 ) ) )
| ( $false
= ( in @ X1 @ X2 ) ) ),
inference(not_proxy_clausification,[],[f24]) ).
thf(f27,plain,
( ( $true = $false )
| ( ( in @ sK2 @ sK1 )
= $false ) ),
inference(constrained_superposition,[],[f14,f25]) ).
thf(f28,plain,
( ( in @ sK2 @ sK1 )
= $false ),
inference(trivial_inequality_removal,[],[f27]) ).
thf(f31,plain,
$true = $false,
inference(constrained_superposition,[],[f13,f28]) ).
thf(f32,plain,
$false,
inference(trivial_inequality_removal,[],[f31]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : SEU608^2 : TPTP v9.3.1. Released v3.7.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 SAT
% 0.08/0.16 % Computer : n002.cluster.edu
% 0.08/0.16 % Model : x86_64 x86_64
% 0.08/0.16 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.16 % Memory : 8046.5625MB
% 0.08/0.16 % OS : Linux 6.8.0-71-generic
% 0.08/0.16 % CPULimit : 300
% 0.08/0.16 % WCLimit : 300
% 0.08/0.17 % DateTime : Tue Sep 29 14:00:08 UTC 2026
% 0.08/0.17 % CPUTime :
% 0.08/0.17 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 SAT
% 0.08/0.20 Running first-order model finding
% 0.08/0.20 Running: /export/starexec/sandbox2/solver/bin/vampire-ho --input_syntax tptp --output_axiom_names on --mode casc --intent sat -m 16384 --cores 7 -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.23 % (1327969)Will run a generic schedule for satisfiability detection.
% 0.08/0.23 % (1327975)% WARNING: option uhcvi not known.
% 0.08/0.23 % (1327975)dis+11_61:31_drc=ordering:lsd=5:bsr=unit_only:rp=on:newcnf=on:random_seed=3959801080:i=135531:add=off:rawr=on_3000 on theBenchmark for (3000ds/135531Mi)
% 0.08/0.23 % (1327974)fmb+10_1_sas=cadical:bce=on:rp=on:random_seed=1488289763_3000 on theBenchmark for (3000ds/0Mi)
% 0.08/0.23 % (1327976)dis+10_161_sil=256000:plsq=on:plsqr=61199697,1048576:gs=on:alpa=true:sac=on:slsq=on:cn=on:random_seed=4256925687:i=88024:add=on:rawr=on_3000 on theBenchmark for (3000ds/88024Mi)
% 0.08/0.23 % (1327977)dis+10_1_sil=32000:sp=arity:random_seed=3171237464:i=103:fgj=on_3000 on theBenchmark for (3000ds/103Mi)
% 0.08/0.23 % (1327978)ott+31_1_sil=16000:lcm=predicate:bce=on:newcnf=on:random_seed=820963307:i=116_3000 on theBenchmark for (3000ds/116Mi)
% 0.08/0.23 % (1327979)ott+1_1_to=lpo:sil=16000:sp=reverse_arity:erd=off:random_seed=310413738:i=131_3000 on theBenchmark for (3000ds/131Mi)
% 0.08/0.23 % (1327975)WARNING: Not using 'newcnf' as currently not compatible with higher-order inputs.
% 0.08/0.23 % (1327980)ott-3_16_to=lpo:sil=16000:sp=arity:fd=off:rp=on:random_seed=1074688217:i=159:bs=unit_only:nicw=on:fsr=off:amm=off_3000 on theBenchmark for (3000ds/159Mi)
% 0.08/0.23 % (1327978)WARNING: Not using 'newcnf' as currently not compatible with higher-order inputs.
% 0.08/0.23 % (1327975)WARNING: Look ahead literal selection is not currently compatible with higher-order. Ignoring request to use
% 0.08/0.23 % Exception at run slice level
% 0.08/0.23 User error: Finite model building is currently not compatible with polymorphism or higher-order constructs
% 0.08/0.23 % (1327977) found proof, printing to "/export/starexec/sandbox2/tmp/vampire-proof-1327969-1327977"...
% 0.08/0.23 % (1327978) found proof, printing to "/export/starexec/sandbox2/tmp/vampire-proof-1327969-1327978"...
% 0.08/0.23 % (1327979) found proof, printing to "/export/starexec/sandbox2/tmp/vampire-proof-1327969-1327979"...
% 0.08/0.23 % (1327975) found proof, printing to "/export/starexec/sandbox2/tmp/vampire-proof-1327969-1327975"...
% 0.08/0.23 % (1327980) found proof, printing to "/export/starexec/sandbox2/tmp/vampire-proof-1327969-1327980"...
% 0.08/0.23 % (1327976) found proof, printing to "/export/starexec/sandbox2/tmp/vampire-proof-1327969-1327976"...
% 0.08/0.23 % (1327977)...printing done.
% 0.08/0.23 % (1327978)...printing done.
% 0.08/0.23 % (1327979)...printing done.
% 0.08/0.23 % (1327975)...printing done.
% 0.08/0.23 % (1327980)...printing done.
% 0.08/0.23 % (1327976)...printing done.
% 0.08/0.23 % (1327977)Refutation found. Thanks to Tanya!
% 0.08/0.23 % SZS status Theorem for theBenchmark
% 0.08/0.23 % SZS output start Proof for theBenchmark
% See solution above
% 0.08/0.23 % (1327977)------------------------------
% 0.08/0.23 % (1327977)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.08/0.23 % (1327977)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.08/0.23 % (1327977)CaDiCaL version: 2.1.3
% 0.08/0.23 % (1327977)Termination reason: Refutation
% 0.08/0.23 % (1327977)Time elapsed: 0.002 s
% 0.08/0.23 % (1327977)Peak memory usage: 12 MB
% 0.08/0.23 % (1327977)Instructions burned: 3 (million)
% 0.08/0.23 % (1327969)Success in time 0.024 s
% 0.08/0.23 % Vampire exiting
%------------------------------------------------------------------------------