%------------------------------------------------------------------------------
% File : DT2H2X---1.9.5
% Problem : SEU729^2 : TPTP v9.2.1. Released v3.7.0.
% Transfm : none
% Format : tptp:raw
% Command : /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% Computer : n025.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8042.1875MB
% OS : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Wed Feb 25 09:36:43 AM UTC 2026
% Result : Theorem 1.66s 1.31s
% Output : Refutation 1.66s
% Verified :
% SZS Type : Refutation
% Derivation depth : 24
% Number of leaves : 11
% Syntax : Number of formulae : 71 ( 13 unt; 0 typ; 0 def)
% Number of atoms : 1133 ( 337 equ; 0 cnn)
% Maximal formula atoms : 14 ( 15 avg)
% Number of connectives : 1550 ( 177 ~; 162 |; 80 &;1073 @)
% ( 8 <=>; 50 =>; 0 <=; 0 <~>)
% Maximal formula depth : 13 ( 7 avg)
% Number of types : 2 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 21 ( 18 usr; 15 con; 0-3 aty)
% Number of variables : 193 ( 0 ^; 154 !; 39 ?; 193 :)
% Comments :
%------------------------------------------------------------------------------
thf(func_def_0,type,
in: $i > $i > $o ).
thf(func_def_1,type,
powerset: $i > $i ).
thf(func_def_2,type,
subset: $i > $i > $o ).
thf(func_def_3,type,
setminus: $i > $i > $i ).
thf(func_def_17,type,
sK7: $i > $i > $i > $i ).
thf(f149,plain,
$false,
inference(subsumption_resolution,[status(thm)],[f148,f39]) ).
thf(f39,plain,
( ( in @ sK0 @ ( powerset @ sK1 ) )
= $true ),
inference(cnf_transformation,[status(thm)],[f23]) ).
thf(f23,plain,
( ( doubleComplementI1 = $true )
& ( complementT_lem = $true )
& ( subsetTI = $true )
& ( ( subset @ sK0 @ ( setminus @ sK1 @ ( setminus @ sK1 @ sK0 ) ) )
!= $true )
& ( ( in @ sK0 @ ( powerset @ sK1 ) )
= $true ) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1])],[f16,f22]) ).
thf(f22,plain,
( ? [X0: $i,X1: $i] :
( ( $true
!= ( subset @ X0 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) ) )
& ( $true
= ( in @ X0 @ ( powerset @ X1 ) ) ) )
=> ( ( ( subset @ sK0 @ ( setminus @ sK1 @ ( setminus @ sK1 @ sK0 ) ) )
!= $true )
& ( ( in @ sK0 @ ( powerset @ sK1 ) )
= $true ) ) ),
introduced(definition,[],[choice_axiom]) ).
thf(f16,plain,
( ( doubleComplementI1 = $true )
& ( complementT_lem = $true )
& ( subsetTI = $true )
& ? [X0: $i,X1: $i] :
( ( $true
!= ( subset @ X0 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) ) )
& ( $true
= ( in @ X0 @ ( powerset @ X1 ) ) ) ) ),
inference(flattening,[status(thm)],[f15]) ).
thf(f15,plain,
( ? [X0: $i,X1: $i] :
( ( $true
!= ( subset @ X0 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) ) )
& ( $true
= ( in @ X0 @ ( powerset @ X1 ) ) ) )
& ( doubleComplementI1 = $true )
& ( subsetTI = $true )
& ( complementT_lem = $true ) ),
inference(ennf_transformation,[status(thm)],[f14]) ).
thf(f14,plain,
~ ( ( complementT_lem = $true )
=> ( ( subsetTI = $true )
=> ( ( doubleComplementI1 = $true )
=> ! [X0: $i,X1: $i] :
( ( $true
= ( in @ X0 @ ( powerset @ X1 ) ) )
=> ( $true
= ( subset @ X0 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) ) ) ) ) ) ),
inference(fool_elimination,[status(thm)],[f13]) ).
thf(f13,plain,
~ ( complementT_lem
=> ( subsetTI
=> ( doubleComplementI1
=> ! [X0: $i,X1: $i] :
( ( in @ X0 @ ( powerset @ X1 ) )
=> ( subset @ X0 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) ) ) ) ) ),
inference(rectify,[status(thm)],[f5]) ).
thf(f5,negated_conjecture,
~ ( complementT_lem
=> ( subsetTI
=> ( doubleComplementI1
=> ! [X1: $i,X0: $i] :
( ( in @ X1 @ ( powerset @ X0 ) )
=> ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) ) ) ) ) ),
inference(negated_conjecture,[status(cth)],[f4]) ).
thf(f4,conjecture,
( complementT_lem
=> ( subsetTI
=> ( doubleComplementI1
=> ! [X1: $i,X0: $i] :
( ( in @ X1 @ ( powerset @ X0 ) )
=> ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) ) ) ) ) ),
file('/export/starexec/sandbox2/tmp/tmp.I8Eh1d0lab/DTF2THF_27742.p',doubleComplementSub1) ).
thf(f148,plain,
( ( in @ sK0 @ ( powerset @ sK1 ) )
!= $true ),
inference(trivial_inequality_removal,[status(thm)],[f147]) ).
thf(f147,plain,
( ( $true != $true )
| ( ( in @ sK0 @ ( powerset @ sK1 ) )
!= $true ) ),
inference(superposition,[status(thm)],[f40,f138]) ).
thf(f138,plain,
! [X0: $i,X1: $i] :
( ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true ) ),
inference(subsumption_resolution,[status(thm)],[f137,f76]) ).
thf(f76,plain,
! [X0: $i,X1: $i] :
( ( ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) )
= $true )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) ) ),
inference(trivial_inequality_removal,[status(thm)],[f59]) ).
thf(f59,plain,
! [X0: $i,X1: $i] :
( ( $true != $true )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) )
= $true ) ),
inference(definition_unfolding,[status(thm)],[f46,f42]) ).
thf(f42,plain,
complementT_lem = $true,
inference(cnf_transformation,[status(thm)],[f23]) ).
thf(f46,plain,
! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) )
= $true )
| ( complementT_lem != $true ) ),
inference(cnf_transformation,[status(thm)],[f27]) ).
thf(f27,plain,
( ( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) )
= $true ) )
| ( complementT_lem != $true ) )
& ( ( complementT_lem = $true )
| ( ( $true
= ( in @ sK2 @ ( powerset @ sK3 ) ) )
& ( ( in @ ( setminus @ sK3 @ sK2 ) @ ( powerset @ sK3 ) )
!= $true ) ) ) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sK2,sK3])],[f25,f26]) ).
thf(f26,plain,
( ? [X2: $i,X3: $i] :
( ( ( in @ X2 @ ( powerset @ X3 ) )
= $true )
& ( ( in @ ( setminus @ X3 @ X2 ) @ ( powerset @ X3 ) )
!= $true ) )
=> ( ( $true
= ( in @ sK2 @ ( powerset @ sK3 ) ) )
& ( ( in @ ( setminus @ sK3 @ sK2 ) @ ( powerset @ sK3 ) )
!= $true ) ) ),
introduced(definition,[],[choice_axiom]) ).
thf(f25,plain,
( ( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) )
= $true ) )
| ( complementT_lem != $true ) )
& ( ( complementT_lem = $true )
| ? [X2: $i,X3: $i] :
( ( ( in @ X2 @ ( powerset @ X3 ) )
= $true )
& ( ( in @ ( setminus @ X3 @ X2 ) @ ( powerset @ X3 ) )
!= $true ) ) ) ),
inference(rectify,[status(thm)],[f24]) ).
thf(f24,plain,
( ( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) )
= $true ) )
| ( complementT_lem != $true ) )
& ( ( complementT_lem = $true )
| ? [X0: $i,X1: $i] :
( ( $true
= ( in @ X0 @ ( powerset @ X1 ) ) )
& ( ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) )
!= $true ) ) ) ),
inference(nnf_transformation,[status(thm)],[f17]) ).
thf(f17,plain,
( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) )
= $true ) )
<=> ( complementT_lem = $true ) ),
inference(ennf_transformation,[status(thm)],[f10]) ).
thf(f10,plain,
( ! [X0: $i,X1: $i] :
( ( $true
= ( in @ X0 @ ( powerset @ X1 ) ) )
=> ( ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) )
= $true ) )
<=> ( complementT_lem = $true ) ),
inference(fool_elimination,[status(thm)],[f9]) ).
thf(f9,plain,
! [X0: $i,X1: $i] :
( ( ( in @ X0 @ ( powerset @ X1 ) )
=> ( in @ ( setminus @ X1 @ X0 ) @ ( powerset @ X1 ) ) )
= complementT_lem ),
inference(rectify,[status(thm)],[f1]) ).
thf(f1,axiom,
! [X1: $i,X0: $i] :
( ( ( in @ X1 @ ( powerset @ X0 ) )
=> ( in @ ( setminus @ X0 @ X1 ) @ ( powerset @ X0 ) ) )
= complementT_lem ),
file('/export/starexec/sandbox2/tmp/tmp.I8Eh1d0lab/DTF2THF_27742.p',complementT_lem) ).
thf(f137,plain,
! [X0: $i,X1: $i] :
( ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true )
| ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( ( in @ ( setminus @ X0 @ X1 ) @ ( powerset @ X0 ) )
!= $true ) ),
inference(trivial_inequality_removal,[status(thm)],[f136]) ).
thf(f136,plain,
! [X0: $i,X1: $i] :
( ( ( in @ ( setminus @ X0 @ X1 ) @ ( powerset @ X0 ) )
!= $true )
| ( $true != $true )
| ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true ) ),
inference(superposition,[status(thm)],[f126,f76]) ).
thf(f126,plain,
! [X0: $i,X1: $i] :
( ( $true
!= ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X0 ) ) )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true )
| ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true ) ),
inference(trivial_inequality_removal,[status(thm)],[f125]) ).
thf(f125,plain,
! [X0: $i,X1: $i] :
( ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( $true
!= ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X0 ) ) )
| ( $true != $true )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true ) ),
inference(duplicate_literal_removal,[status(thm)],[f121]) ).
thf(f121,plain,
! [X0: $i,X1: $i] :
( ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true )
| ( $true
!= ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X0 ) ) )
| ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( $true != $true )
| ( $true
!= ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X0 ) ) )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true ) ),
inference(superposition,[status(thm)],[f116,f74]) ).
thf(f74,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X1 )
= $true )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( subset @ X0 @ X2 )
= $true )
| ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true ) ),
inference(trivial_inequality_removal,[status(thm)],[f68]) ).
thf(f68,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true )
| ( ( subset @ X0 @ X2 )
= $true )
| ( $true != $true )
| ( ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X1 )
= $true )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) ) ),
inference(definition_unfolding,[status(thm)],[f57,f41]) ).
thf(f41,plain,
subsetTI = $true,
inference(cnf_transformation,[status(thm)],[f23]) ).
thf(f57,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true )
| ( ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X1 )
= $true )
| ( ( subset @ X0 @ X2 )
= $true )
| ( subsetTI != $true ) ),
inference(cnf_transformation,[status(thm)],[f38]) ).
thf(f38,plain,
( ( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ! [X2: $i] :
( ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true )
| ( ( $true
!= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X2 ) )
& ( ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X1 )
= $true )
& ( $true
= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X0 ) ) )
| ( ( subset @ X0 @ X2 )
= $true ) ) )
| ( subsetTI != $true ) )
& ( ( subsetTI = $true )
| ( ( ( in @ sK8 @ ( powerset @ sK9 ) )
= $true )
& ( ( in @ sK10 @ ( powerset @ sK9 ) )
= $true )
& ! [X7: $i] :
( ( $true
= ( in @ X7 @ sK10 ) )
| ( ( in @ X7 @ sK9 )
!= $true )
| ( ( in @ X7 @ sK8 )
!= $true ) )
& ( ( subset @ sK8 @ sK10 )
!= $true ) ) ) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sK7,sK8,sK9,sK10])],[f34,f37,f36,f35]) ).
thf(f35,plain,
! [X0: $i,X1: $i,X2: $i] :
( ? [X3: $i] :
( ( ( in @ X3 @ X2 )
!= $true )
& ( ( in @ X3 @ X1 )
= $true )
& ( ( in @ X3 @ X0 )
= $true ) )
=> ( ( $true
!= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X2 ) )
& ( ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X1 )
= $true )
& ( $true
= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X0 ) ) ) ),
introduced(definition,[],[choice_axiom]) ).
thf(f36,plain,
( ? [X4: $i,X5: $i] :
( ( ( in @ X4 @ ( powerset @ X5 ) )
= $true )
& ? [X6: $i] :
( ( ( in @ X6 @ ( powerset @ X5 ) )
= $true )
& ! [X7: $i] :
( ( $true
= ( in @ X7 @ X6 ) )
| ( ( in @ X7 @ X5 )
!= $true )
| ( ( in @ X7 @ X4 )
!= $true ) )
& ( ( subset @ X4 @ X6 )
!= $true ) ) )
=> ( ( ( in @ sK8 @ ( powerset @ sK9 ) )
= $true )
& ? [X6: $i] :
( ( ( in @ X6 @ ( powerset @ sK9 ) )
= $true )
& ! [X7: $i] :
( ( $true
= ( in @ X7 @ X6 ) )
| ( ( in @ X7 @ sK9 )
!= $true )
| ( ( in @ X7 @ sK8 )
!= $true ) )
& ( ( subset @ sK8 @ X6 )
!= $true ) ) ) ),
introduced(definition,[],[choice_axiom]) ).
thf(f37,plain,
( ? [X6: $i] :
( ( ( in @ X6 @ ( powerset @ sK9 ) )
= $true )
& ! [X7: $i] :
( ( $true
= ( in @ X7 @ X6 ) )
| ( ( in @ X7 @ sK9 )
!= $true )
| ( ( in @ X7 @ sK8 )
!= $true ) )
& ( ( subset @ sK8 @ X6 )
!= $true ) )
=> ( ( ( in @ sK10 @ ( powerset @ sK9 ) )
= $true )
& ! [X7: $i] :
( ( $true
= ( in @ X7 @ sK10 ) )
| ( ( in @ X7 @ sK9 )
!= $true )
| ( ( in @ X7 @ sK8 )
!= $true ) )
& ( ( subset @ sK8 @ sK10 )
!= $true ) ) ),
introduced(definition,[],[choice_axiom]) ).
thf(f34,plain,
( ( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ! [X2: $i] :
( ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true )
| ? [X3: $i] :
( ( ( in @ X3 @ X2 )
!= $true )
& ( ( in @ X3 @ X1 )
= $true )
& ( ( in @ X3 @ X0 )
= $true ) )
| ( ( subset @ X0 @ X2 )
= $true ) ) )
| ( subsetTI != $true ) )
& ( ( subsetTI = $true )
| ? [X4: $i,X5: $i] :
( ( ( in @ X4 @ ( powerset @ X5 ) )
= $true )
& ? [X6: $i] :
( ( ( in @ X6 @ ( powerset @ X5 ) )
= $true )
& ! [X7: $i] :
( ( $true
= ( in @ X7 @ X6 ) )
| ( ( in @ X7 @ X5 )
!= $true )
| ( ( in @ X7 @ X4 )
!= $true ) )
& ( ( subset @ X4 @ X6 )
!= $true ) ) ) ) ),
inference(rectify,[status(thm)],[f33]) ).
thf(f33,plain,
( ( ! [X1: $i,X0: $i] :
( ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true )
| ! [X2: $i] :
( ( ( in @ X2 @ ( powerset @ X0 ) )
!= $true )
| ? [X3: $i] :
( ( ( in @ X3 @ X2 )
!= $true )
& ( ( in @ X3 @ X0 )
= $true )
& ( ( in @ X3 @ X1 )
= $true ) )
| ( ( subset @ X1 @ X2 )
= $true ) ) )
| ( subsetTI != $true ) )
& ( ( subsetTI = $true )
| ? [X1: $i,X0: $i] :
( ( ( in @ X1 @ ( powerset @ X0 ) )
= $true )
& ? [X2: $i] :
( ( ( in @ X2 @ ( powerset @ X0 ) )
= $true )
& ! [X3: $i] :
( ( ( in @ X3 @ X2 )
= $true )
| ( ( in @ X3 @ X0 )
!= $true )
| ( ( in @ X3 @ X1 )
!= $true ) )
& ( ( subset @ X1 @ X2 )
!= $true ) ) ) ) ),
inference(nnf_transformation,[status(thm)],[f19]) ).
thf(f19,plain,
( ! [X1: $i,X0: $i] :
( ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true )
| ! [X2: $i] :
( ( ( in @ X2 @ ( powerset @ X0 ) )
!= $true )
| ? [X3: $i] :
( ( ( in @ X3 @ X2 )
!= $true )
& ( ( in @ X3 @ X0 )
= $true )
& ( ( in @ X3 @ X1 )
= $true ) )
| ( ( subset @ X1 @ X2 )
= $true ) ) )
<=> ( subsetTI = $true ) ),
inference(flattening,[status(thm)],[f18]) ).
thf(f18,plain,
( ! [X0: $i,X1: $i] :
( ! [X2: $i] :
( ( ( subset @ X1 @ X2 )
= $true )
| ? [X3: $i] :
( ( ( in @ X3 @ X2 )
!= $true )
& ( ( in @ X3 @ X1 )
= $true )
& ( ( in @ X3 @ X0 )
= $true ) )
| ( ( in @ X2 @ ( powerset @ X0 ) )
!= $true ) )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true ) )
<=> ( subsetTI = $true ) ),
inference(ennf_transformation,[status(thm)],[f8]) ).
thf(f8,plain,
( ! [X0: $i,X1: $i] :
( ( ( in @ X1 @ ( powerset @ X0 ) )
= $true )
=> ! [X2: $i] :
( ( ( in @ X2 @ ( powerset @ X0 ) )
= $true )
=> ( ! [X3: $i] :
( ( ( in @ X3 @ X0 )
= $true )
=> ( ( ( in @ X3 @ X1 )
= $true )
=> ( ( in @ X3 @ X2 )
= $true ) ) )
=> ( ( subset @ X1 @ X2 )
= $true ) ) ) )
<=> ( subsetTI = $true ) ),
inference(fool_elimination,[status(thm)],[f7]) ).
thf(f7,plain,
( subsetTI
= ( ! [X0: $i,X1: $i] :
( ( in @ X1 @ ( powerset @ X0 ) )
=> ! [X2: $i] :
( ( in @ X2 @ ( powerset @ X0 ) )
=> ( ! [X3: $i] :
( ( in @ X3 @ X0 )
=> ( ( in @ X3 @ X1 )
=> ( in @ X3 @ X2 ) ) )
=> ( subset @ X1 @ X2 ) ) ) ) ) ),
inference(rectify,[status(thm)],[f2]) ).
thf(f2,axiom,
( subsetTI
= ( ! [X0: $i,X1: $i] :
( ( in @ X1 @ ( powerset @ X0 ) )
=> ! [X2: $i] :
( ( in @ X2 @ ( powerset @ X0 ) )
=> ( ! [X3: $i] :
( ( in @ X3 @ X0 )
=> ( ( in @ X3 @ X1 )
=> ( in @ X3 @ X2 ) ) )
=> ( subset @ X1 @ X2 ) ) ) ) ) ),
file('/export/starexec/sandbox2/tmp/tmp.I8Eh1d0lab/DTF2THF_27742.p',subsetTI) ).
thf(f116,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true
!= ( in @ ( sK7 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ X2 @ X1 ) @ X0 ) )
| ( ( in @ X1 @ ( powerset @ X2 ) )
!= $true )
| ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X2 ) )
!= $true )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true ) ),
inference(trivial_inequality_removal,[status(thm)],[f115]) ).
thf(f115,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true )
| ( ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X2 ) )
!= $true )
| ( ( in @ X1 @ ( powerset @ X2 ) )
!= $true )
| ( $true != $true )
| ( $true
!= ( in @ ( sK7 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ X2 @ X1 ) @ X0 ) )
| ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true ) ),
inference(duplicate_literal_removal,[status(thm)],[f114]) ).
thf(f114,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true != $true )
| ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( ( in @ X1 @ ( powerset @ X2 ) )
!= $true )
| ( ( subset @ X1 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X2 ) )
!= $true )
| ( ( in @ X1 @ ( powerset @ X2 ) )
!= $true )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true )
| ( $true
!= ( in @ ( sK7 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ X2 @ X1 ) @ X0 ) )
| ( ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X2 ) )
!= $true ) ),
inference(superposition,[status(thm)],[f86,f75]) ).
thf(f75,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true
= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X0 ) )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( subset @ X0 @ X2 )
= $true )
| ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true ) ),
inference(trivial_inequality_removal,[status(thm)],[f69]) ).
thf(f69,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true )
| ( $true
= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X0 ) )
| ( ( subset @ X0 @ X2 )
= $true )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( $true != $true ) ),
inference(definition_unfolding,[status(thm)],[f56,f41]) ).
thf(f56,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true )
| ( $true
= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X0 ) )
| ( ( subset @ X0 @ X2 )
= $true )
| ( subsetTI != $true ) ),
inference(cnf_transformation,[status(thm)],[f38]) ).
thf(f86,plain,
! [X2: $i,X3: $i,X0: $i,X1: $i] :
( ( $true
!= ( in @ ( sK7 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ X2 @ X3 ) @ X1 ) )
| ( ( in @ ( sK7 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ X2 @ X3 ) @ X0 )
!= $true )
| ( ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X2 ) )
!= $true )
| ( ( in @ X3 @ ( powerset @ X2 ) )
!= $true )
| ( ( subset @ X3 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true ) ),
inference(trivial_inequality_removal,[status(thm)],[f79]) ).
thf(f79,plain,
! [X2: $i,X3: $i,X0: $i,X1: $i] :
( ( ( in @ ( sK7 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ X2 @ X3 ) @ X0 )
!= $true )
| ( $true
!= ( in @ ( sK7 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ X2 @ X3 ) @ X1 ) )
| ( ( subset @ X3 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) )
= $true )
| ( ( in @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) @ ( powerset @ X2 ) )
!= $true )
| ( $true != $true )
| ( ( in @ X1 @ ( powerset @ X0 ) )
!= $true )
| ( ( in @ X3 @ ( powerset @ X2 ) )
!= $true ) ),
inference(superposition,[status(thm)],[f78,f77]) ).
thf(f77,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
= $true )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( $true
!= ( in @ X2 @ X1 ) )
| ( ( in @ X2 @ X0 )
!= $true ) ),
inference(trivial_inequality_removal,[status(thm)],[f62]) ).
thf(f62,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true != $true )
| ( $true
!= ( in @ X2 @ X1 ) )
| ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
= $true )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ X2 @ X0 )
!= $true ) ),
inference(definition_unfolding,[status(thm)],[f51,f43]) ).
thf(f43,plain,
doubleComplementI1 = $true,
inference(cnf_transformation,[status(thm)],[f23]) ).
thf(f51,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ X2 @ X0 )
!= $true )
| ( $true
!= ( in @ X2 @ X1 ) )
| ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
= $true )
| ( doubleComplementI1 != $true ) ),
inference(cnf_transformation,[status(thm)],[f32]) ).
thf(f32,plain,
( ( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ! [X2: $i] :
( ( ( in @ X2 @ X0 )
!= $true )
| ( $true
!= ( in @ X2 @ X1 ) )
| ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
= $true ) ) )
| ( doubleComplementI1 != $true ) )
& ( ( doubleComplementI1 = $true )
| ( ( ( in @ sK4 @ ( powerset @ sK5 ) )
= $true )
& ( $true
= ( in @ sK6 @ sK4 ) )
& ( ( in @ sK6 @ sK5 )
= $true )
& ( $true
!= ( in @ sK6 @ ( setminus @ sK5 @ ( setminus @ sK5 @ sK4 ) ) ) ) ) ) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sK4,sK5,sK6])],[f29,f31,f30]) ).
thf(f30,plain,
( ? [X3: $i,X4: $i] :
( ( $true
= ( in @ X3 @ ( powerset @ X4 ) ) )
& ? [X5: $i] :
( ( $true
= ( in @ X5 @ X3 ) )
& ( $true
= ( in @ X5 @ X4 ) )
& ( $true
!= ( in @ X5 @ ( setminus @ X4 @ ( setminus @ X4 @ X3 ) ) ) ) ) )
=> ( ( ( in @ sK4 @ ( powerset @ sK5 ) )
= $true )
& ? [X5: $i] :
( ( $true
= ( in @ X5 @ sK4 ) )
& ( ( in @ X5 @ sK5 )
= $true )
& ( ( in @ X5 @ ( setminus @ sK5 @ ( setminus @ sK5 @ sK4 ) ) )
!= $true ) ) ) ),
introduced(definition,[],[choice_axiom]) ).
thf(f31,plain,
( ? [X5: $i] :
( ( $true
= ( in @ X5 @ sK4 ) )
& ( ( in @ X5 @ sK5 )
= $true )
& ( ( in @ X5 @ ( setminus @ sK5 @ ( setminus @ sK5 @ sK4 ) ) )
!= $true ) )
=> ( ( $true
= ( in @ sK6 @ sK4 ) )
& ( ( in @ sK6 @ sK5 )
= $true )
& ( $true
!= ( in @ sK6 @ ( setminus @ sK5 @ ( setminus @ sK5 @ sK4 ) ) ) ) ) ),
introduced(definition,[],[choice_axiom]) ).
thf(f29,plain,
( ( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ! [X2: $i] :
( ( ( in @ X2 @ X0 )
!= $true )
| ( $true
!= ( in @ X2 @ X1 ) )
| ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
= $true ) ) )
| ( doubleComplementI1 != $true ) )
& ( ( doubleComplementI1 = $true )
| ? [X3: $i,X4: $i] :
( ( $true
= ( in @ X3 @ ( powerset @ X4 ) ) )
& ? [X5: $i] :
( ( $true
= ( in @ X5 @ X3 ) )
& ( $true
= ( in @ X5 @ X4 ) )
& ( $true
!= ( in @ X5 @ ( setminus @ X4 @ ( setminus @ X4 @ X3 ) ) ) ) ) ) ) ),
inference(rectify,[status(thm)],[f28]) ).
thf(f28,plain,
( ( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ! [X2: $i] :
( ( ( in @ X2 @ X0 )
!= $true )
| ( $true
!= ( in @ X2 @ X1 ) )
| ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
= $true ) ) )
| ( doubleComplementI1 != $true ) )
& ( ( doubleComplementI1 = $true )
| ? [X0: $i,X1: $i] :
( ( $true
= ( in @ X0 @ ( powerset @ X1 ) ) )
& ? [X2: $i] :
( ( ( in @ X2 @ X0 )
= $true )
& ( $true
= ( in @ X2 @ X1 ) )
& ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
!= $true ) ) ) ) ),
inference(nnf_transformation,[status(thm)],[f21]) ).
thf(f21,plain,
( ! [X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ! [X2: $i] :
( ( ( in @ X2 @ X0 )
!= $true )
| ( $true
!= ( in @ X2 @ X1 ) )
| ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
= $true ) ) )
<=> ( doubleComplementI1 = $true ) ),
inference(flattening,[status(thm)],[f20]) ).
thf(f20,plain,
( ( doubleComplementI1 = $true )
<=> ! [X1: $i,X0: $i] :
( ! [X2: $i] :
( ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
= $true )
| ( ( in @ X2 @ X0 )
!= $true )
| ( $true
!= ( in @ X2 @ X1 ) ) )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) ) ) ),
inference(ennf_transformation,[status(thm)],[f12]) ).
thf(f12,plain,
( ( doubleComplementI1 = $true )
<=> ! [X1: $i,X0: $i] :
( ( $true
= ( in @ X0 @ ( powerset @ X1 ) ) )
=> ! [X2: $i] :
( ( $true
= ( in @ X2 @ X1 ) )
=> ( ( ( in @ X2 @ X0 )
= $true )
=> ( ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) )
= $true ) ) ) ) ),
inference(fool_elimination,[status(thm)],[f11]) ).
thf(f11,plain,
( doubleComplementI1
= ( ! [X0: $i,X1: $i] :
( ( in @ X0 @ ( powerset @ X1 ) )
=> ! [X2: $i] :
( ( in @ X2 @ X1 )
=> ( ( in @ X2 @ X0 )
=> ( in @ X2 @ ( setminus @ X1 @ ( setminus @ X1 @ X0 ) ) ) ) ) ) ) ),
inference(rectify,[status(thm)],[f3]) ).
thf(f3,axiom,
( doubleComplementI1
= ( ! [X1: $i,X0: $i] :
( ( in @ X1 @ ( powerset @ X0 ) )
=> ! [X3: $i] :
( ( in @ X3 @ X0 )
=> ( ( in @ X3 @ X1 )
=> ( in @ X3 @ ( setminus @ X0 @ ( setminus @ X0 @ X1 ) ) ) ) ) ) ) ),
file('/export/starexec/sandbox2/tmp/tmp.I8Eh1d0lab/DTF2THF_27742.p',doubleComplementI1) ).
thf(f78,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true
!= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X2 ) )
| ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true )
| ( ( subset @ X0 @ X2 )
= $true ) ),
inference(trivial_inequality_removal,[status(thm)],[f67]) ).
thf(f67,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true )
| ( ( subset @ X0 @ X2 )
= $true )
| ( $true
!= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X2 ) )
| ( $true != $true ) ),
inference(definition_unfolding,[status(thm)],[f58,f41]) ).
thf(f58,plain,
! [X2: $i,X0: $i,X1: $i] :
( ( $true
!= ( in @ X0 @ ( powerset @ X1 ) ) )
| ( ( in @ X2 @ ( powerset @ X1 ) )
!= $true )
| ( $true
!= ( in @ ( sK7 @ X2 @ X1 @ X0 ) @ X2 ) )
| ( ( subset @ X0 @ X2 )
= $true )
| ( subsetTI != $true ) ),
inference(cnf_transformation,[status(thm)],[f38]) ).
thf(f40,plain,
( ( subset @ sK0 @ ( setminus @ sK1 @ ( setminus @ sK1 @ sK0 ) ) )
!= $true ),
inference(cnf_transformation,[status(thm)],[f23]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12 % Problem : SEU729^2 : TPTP v9.2.1. Released v3.7.0.
% 0.12/0.13 % Command : /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.16/0.34 % Computer : n025.cluster.edu
% 0.16/0.34 % Model : x86_64 x86_64
% 0.16/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.16/0.34 % Memory : 8042.1875MB
% 0.16/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.16/0.34 % CPULimit : 300
% 0.16/0.34 % WCLimit : 300
% 0.16/0.34 % DateTime : Tue Feb 24 12:32:27 EST 2026
% 0.16/0.34 % CPUTime :
% 0.16/0.34 Running /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.27/0.47 ---- Original DTF file ---
% 0.27/0.47 thf(spec,logic,$$dhol).
% 0.27/0.47 %------------------------------------------------------------------------------
% 0.27/0.47 % File : SEU729^2 : TPTP v9.2.1. Released v3.7.0.
% 0.27/0.47 % Domain : Set Theory
% 0.27/0.47 % Problem : Typed Set Theory - Laws for Typed Sets
% 0.27/0.47 % Version : Especial > Reduced > Especial.
% 0.27/0.47 % English : (! A:i.! X:i.in X (powerset A) ->
% 0.27/0.47 % subset X (setminus A (setminus A X)))
% 0.27/0.47
% 0.27/0.47 % Refs : [Bro08] Brown (2008), Email to G. Sutcliffe
% 0.27/0.47 % Source : [Bro08]
% 0.27/0.47 % Names : ZFC231l [Bro08]
% 0.27/0.47
% 0.27/0.47 % Status : Theorem
% 0.27/0.47 % Rating : 0.00 v8.2.0, 0.08 v8.1.0, 0.09 v7.5.0, 0.00 v7.1.0, 0.12 v7.0.0, 0.00 v6.1.0, 0.14 v5.5.0, 0.17 v5.4.0, 0.20 v5.3.0, 0.40 v5.2.0, 0.20 v5.1.0, 0.40 v5.0.0, 0.20 v4.1.0, 0.00 v4.0.0, 0.33 v3.7.0
% 0.27/0.47 % Syntax : Number of formulae : 11 ( 3 unt; 7 typ; 3 def)
% 0.27/0.47 % Number of atoms : 23 ( 3 equ; 0 cnn)
% 0.27/0.47 % Maximal formula atoms : 5 ( 5 avg)
% 0.27/0.47 % Number of connectives : 57 ( 0 ~; 0 |; 0 &; 44 @)
% 0.27/0.47 % ( 0 <=>; 13 =>; 0 <=; 0 <~>)
% 0.27/0.47 % Maximal formula depth : 11 ( 4 avg)
% 0.27/0.47 % Number of types : 2 ( 0 usr)
% 0.27/0.47 % Number of type conns : 7 ( 7 >; 0 *; 0 +; 0 <<)
% 0.27/0.47 % Number of symbols : 8 ( 7 usr; 3 con; 0-2 aty)
% 0.27/0.47 % Number of variables : 11 ( 0 ^; 11 !; 0 ?; 11 :)
% 0.27/0.47 % SPC : TH0_THM_EQU_NAR
% 0.27/0.47
% 0.27/0.47 % Comments : http://mathgate.info/detsetitem.php?id=289
% 0.27/0.47 %------------------------------------------------------------------------------
% 0.27/0.47 thf(in_type,type,
% 0.27/0.47 in: $i > $i > $o ).
% 0.27/0.47
% 0.27/0.47 thf(powerset_type,type,
% 0.27/0.47 powerset: $i > $i ).
% 0.27/0.47
% 0.27/0.47 thf(subset_type,type,
% 0.27/0.47 subset: $i > $i > $o ).
% 0.27/0.47
% 0.27/0.47 thf(setminus_type,type,
% 0.27/0.47 setminus: $i > $i > $i ).
% 0.27/0.47
% 0.27/0.47 thf(complementT_lem_type,type,
% 0.27/0.47 complementT_lem: $o ).
% 0.27/0.47
% 0.27/0.47 thf(complementT_lem,definition,
% 0.27/0.47 ( complementT_lem
% 0.27/0.47 = ( ! [A: $i,X: $i] :
% 0.27/0.47 ( ( in @ X @ ( powerset @ A ) )
% 0.27/0.47 => ( in @ ( setminus @ A @ X ) @ ( powerset @ A ) ) ) ) ) ).
% 0.27/0.47
% 0.27/0.47 thf(subsetTI_type,type,
% 0.27/0.47 subsetTI: $o ).
% 0.27/0.47
% 0.27/0.47 thf(subsetTI,definition,
% 0.27/0.47 ( subsetTI
% 0.27/0.47 = ( ! [A: $i,X: $i] :
% 0.27/0.47 ( ( in @ X @ ( powerset @ A ) )
% 0.27/0.47 => ! [Y: $i] :
% 0.27/0.47 ( ( in @ Y @ ( powerset @ A ) )
% 0.27/0.47 => ( ! [Xx: $i] :
% 0.27/0.47 ( ( in @ Xx @ A )
% 0.27/0.47 => ( ( in @ Xx @ X )
% 0.27/0.47 => ( in @ Xx @ Y ) ) )
% 0.27/0.47 => ( subset @ X @ Y ) ) ) ) ) ) ).
% 0.27/0.47
% 0.27/0.47 thf(doubleComplementI1_type,type,
% 0.27/0.47 doubleComplementI1: $o ).
% 0.27/0.47
% 0.27/0.47 thf(doubleComplementI1,definition,
% 0.27/0.47 ( doubleComplementI1
% 0.27/0.47 = ( ! [A: $i,X: $i] :
% 0.27/0.47 ( ( in @ X @ ( powerset @ A ) )
% 0.27/0.47 => ! [Xx: $i] :
% 0.27/0.47 ( ( in @ Xx @ A )
% 0.27/0.47 => ( ( in @ Xx @ X )
% 0.27/0.47 => ( in @ Xx @ ( setminus @ A @ ( setminus @ A @ X ) ) ) ) ) ) ) ) ).
% 0.27/0.47
% 0.27/0.47 thf(doubleComplementSub1,conjecture,
% 0.27/0.47 ( complementT_lem
% 0.27/0.47 => ( subsetTI
% 0.27/0.47 => ( doubleComplementI1
% 0.27/0.47 => ! [A: $i,X: $i] :
% 0.27/0.47 ( ( in @ X @ ( powerset @ A ) )
% 0.27/0.47 => ( subset @ X @ ( setminus @ A @ ( setminus @ A @ X ) ) ) ) ) ) ) ).
% 0.27/0.47
% 0.27/0.47 %------------------------------------------------------------------------------
% 0.27/0.47 ------------------------
% 1.49/1.27 ---- Embedded in THF ---
% 1.49/1.27 %%% This output was generated by embedproblem, version 1.9.5 (library version 1.9).
% 1.49/1.27 %%% Generated on Tue Feb 24 12:32:28 EST 2026
% 1.49/1.27 %%% using '$$dhol' embedding, version 1.3.0.
% 1.49/1.27 %%% Logic specification used:
% 1.49/1.27 %%% thf(spec, logic, $$dhol).
% 1.49/1.27
% 1.49/1.27 % SZS output start ListOfTHF for /export/starexec/sandbox2/tmp/tmp.I8Eh1d0lab/DTF2DTF27742.p
% See solution above
% 1.49/1.28 ------------------------
% 1.49/1.28 ---- Cleaned THF ---
% 1.49/1.28 thf(in_type,type,
% 1.49/1.28 in: $i > $i > $o ).
% 1.49/1.28
% 1.49/1.28 thf(powerset_type,type,
% 1.49/1.28 powerset: $i > $i ).
% 1.49/1.28
% 1.49/1.28 thf(subset_type,type,
% 1.49/1.28 subset: $i > $i > $o ).
% 1.49/1.28
% 1.49/1.28 thf(setminus_type,type,
% 1.49/1.28 setminus: $i > $i > $i ).
% 1.49/1.28
% 1.49/1.28 thf(complementT_lem_type,type,
% 1.49/1.28 complementT_lem: $o ).
% 1.49/1.28
% 1.49/1.28 thf(complementT_lem,definition,
% 1.49/1.28 ( complementT_lem
% 1.49/1.28 = ( ! [A: $i,X: $i] :
% 1.49/1.28 ( ( in @ X @ ( powerset @ A ) )
% 1.49/1.28 => ( in @ ( setminus @ A @ X ) @ ( powerset @ A ) ) ) ) ) ).
% 1.49/1.28
% 1.49/1.28 thf(subsetTI_type,type,
% 1.49/1.28 subsetTI: $o ).
% 1.49/1.28
% 1.49/1.28 thf(subsetTI,definition,
% 1.49/1.28 ( subsetTI
% 1.49/1.28 = ( ! [A: $i,X: $i] :
% 1.49/1.28 ( ( in @ X @ ( powerset @ A ) )
% 1.49/1.28 => ! [Y: $i] :
% 1.49/1.28 ( ( in @ Y @ ( powerset @ A ) )
% 1.49/1.28 => ( ! [Xx: $i] :
% 1.49/1.28 ( ( in @ Xx @ A )
% 1.49/1.28 => ( ( in @ Xx @ X )
% 1.49/1.28 => ( in @ Xx @ Y ) ) )
% 1.49/1.28 => ( subset @ X @ Y ) ) ) ) ) ) ).
% 1.49/1.28
% 1.49/1.28 thf(doubleComplementI1_type,type,
% 1.49/1.28 doubleComplementI1: $o ).
% 1.49/1.28
% 1.49/1.28 thf(doubleComplementI1,definition,
% 1.49/1.28 ( doubleComplementI1
% 1.49/1.28 = ( ! [A: $i,X: $i] :
% 1.49/1.29 ( ( in @ X @ ( powerset @ A ) )
% 1.49/1.29 => ! [Xx: $i] :
% 1.49/1.29 ( ( in @ Xx @ A )
% 1.49/1.29 => ( ( in @ Xx @ X )
% 1.49/1.29 => ( in @ Xx @ ( setminus @ A @ ( setminus @ A @ X ) ) ) ) ) ) ) ) ).
% 1.49/1.29
% 1.49/1.29 thf(doubleComplementSub1,conjecture,
% 1.49/1.29 ( complementT_lem
% 1.49/1.29 => ( subsetTI
% 1.49/1.29 => ( doubleComplementI1
% 1.49/1.29 => ! [A: $i,X: $i] :
% 1.49/1.29 ( ( in @ X @ ( powerset @ A ) )
% 1.49/1.29 => ( subset @ X @ ( setminus @ A @ ( setminus @ A @ X ) ) ) ) ) ) ) ).
% 1.49/1.29 ------------------------
% 1.66/1.30 % (28010)lrs+1002_1:1_au=on:bd=off:e2e=on:sd=2:sos=on:ss=axioms:i=275:si=on:rtra=on_0 on DTF2THF_27742 for (3000ds/275Mi)
% 1.66/1.31 % (28006)lrs+10_1:1_c=on:cnfonf=conj_eager:fd=off:fe=off:kws=frequency:spb=intro:i=4:si=on:rtra=on_0 on DTF2THF_27742 for (3000ds/4Mi)
% 1.66/1.31 % (28008)lrs+10_1:1_au=on:inj=on:i=2:si=on:rtra=on_0 on DTF2THF_27742 for (3000ds/2Mi)
% 1.66/1.31 % (28007)dis+1010_1:1_au=on:cbe=off:chr=on:fsr=off:hfsq=on:nm=64:sos=theory:sp=weighted_frequency:i=27:si=on:rtra=on_0 on DTF2THF_27742 for (3000ds/27Mi)
% 1.66/1.31 % (28011)lrs+1004_1:128_cond=on:e2e=on:sp=weighted_frequency:i=18:si=on:rtra=on_0 on DTF2THF_27742 for (3000ds/18Mi)
% 1.66/1.31 % (28009)lrs+1002_1:128_aac=none:au=on:cnfonf=lazy_not_gen_be_off:sos=all:i=2:si=on:rtra=on_0 on DTF2THF_27742 for (3000ds/2Mi)
% 1.66/1.31 % (28005)lrs+1002_1:8_bd=off:fd=off:hud=10:tnu=1:i=183:si=on:rtra=on_0 on DTF2THF_27742 for (3000ds/183Mi)
% 1.66/1.31 % (28008)Instruction limit reached!
% 1.66/1.31 % (28008)------------------------------
% 1.66/1.31 % (28008)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.66/1.31 % (28008)Termination reason: Unknown
% 1.66/1.31 % (28008)Termination phase: Property scanning
% 1.66/1.31
% 1.66/1.31 % (28008)Memory used [KB]: 895
% 1.66/1.31 % (28008)Time elapsed: 0.003 s
% 1.66/1.31 % (28008)Instructions burned: 2 (million)
% 1.66/1.31 % (28008)------------------------------
% 1.66/1.31 % (28008)------------------------------
% 1.66/1.31 % (28009)Instruction limit reached!
% 1.66/1.31 % (28009)------------------------------
% 1.66/1.31 % (28009)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.66/1.31 % (28009)Termination reason: Unknown
% 1.66/1.31 % (28009)Termination phase: Property scanning
% 1.66/1.31
% 1.66/1.31 % (28009)Memory used [KB]: 895
% 1.66/1.31 % (28009)Time elapsed: 0.003 s
% 1.66/1.31 % (28009)Instructions burned: 2 (million)
% 1.66/1.31 % (28009)------------------------------
% 1.66/1.31 % (28009)------------------------------
% 1.66/1.31 % (28006)Instruction limit reached!
% 1.66/1.31 % (28006)------------------------------
% 1.66/1.31 % (28006)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.66/1.31 % (28006)Termination reason: Unknown
% 1.66/1.31 % (28006)Termination phase: Saturation
% 1.66/1.31
% 1.66/1.31 % (28006)Memory used [KB]: 5500
% 1.66/1.31 % (28006)Time elapsed: 0.005 s
% 1.66/1.31 % (28006)Instructions burned: 5 (million)
% 1.66/1.31 % (28006)------------------------------
% 1.66/1.31 % (28006)------------------------------
% 1.66/1.31 % (28010)First to succeed.
% 1.66/1.31 % (28010)Refutation found. Thanks to Tanya!
% 1.66/1.31 % SZS status Theorem for DTF2THF_27742
% 1.66/1.31 % SZS output start Proof for DTF2THF_27742
% 1.66/1.31 thf(func_def_0, type, in: $i > $i > $o).
% 1.66/1.31 thf(func_def_1, type, powerset: $i > $i).
% 1.66/1.31 thf(func_def_2, type, subset: $i > $i > $o).
% 1.66/1.31 thf(func_def_3, type, setminus: $i > $i > $i).
% 1.66/1.31 thf(func_def_17, type, sK7: $i > $i > $i > $i).
% 1.66/1.31 thf(f149,plain,(
% 1.66/1.31 $false),
% 1.66/1.31 inference(subsumption_resolution,[status(thm)],[f148,f39])).
% 1.66/1.31 thf(f39,plain,(
% 1.66/1.31 ((in @ sK0 @ (powerset @ sK1)) = $true)),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f23])).
% 1.66/1.31 thf(f23,plain,(
% 1.66/1.31 (doubleComplementI1 = $true) & (complementT_lem = $true) & (subsetTI = $true) & (((subset @ sK0 @ (setminus @ sK1 @ (setminus @ sK1 @ sK0))) != $true) & ((in @ sK0 @ (powerset @ sK1)) = $true))),
% 1.66/1.31 inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1])],[f16,f22])).
% 1.66/1.31 thf(f22,plain,(
% 1.66/1.31 ? [X0 : $i,X1 : $i] : (($true != (subset @ X0 @ (setminus @ X1 @ (setminus @ X1 @ X0)))) & ($true = (in @ X0 @ (powerset @ X1)))) => (((subset @ sK0 @ (setminus @ sK1 @ (setminus @ sK1 @ sK0))) != $true) & ((in @ sK0 @ (powerset @ sK1)) = $true))),
% 1.66/1.31 introduced(definition,[],[choice_axiom])).
% 1.66/1.31 thf(f16,plain,(
% 1.66/1.31 (doubleComplementI1 = $true) & (complementT_lem = $true) & (subsetTI = $true) & ? [X0 : $i,X1 : $i] : (($true != (subset @ X0 @ (setminus @ X1 @ (setminus @ X1 @ X0)))) & ($true = (in @ X0 @ (powerset @ X1))))),
% 1.66/1.31 inference(flattening,[status(thm)],[f15])).
% 1.66/1.31 thf(f15,plain,(
% 1.66/1.31 ((? [X0 : $i,X1 : $i] : (($true != (subset @ X0 @ (setminus @ X1 @ (setminus @ X1 @ X0)))) & ($true = (in @ X0 @ (powerset @ X1)))) & (doubleComplementI1 = $true)) & (subsetTI = $true)) & (complementT_lem = $true)),
% 1.66/1.31 inference(ennf_transformation,[status(thm)],[f14])).
% 1.66/1.31 thf(f14,plain,(
% 1.66/1.31 ~((complementT_lem = $true) => ((subsetTI = $true) => ((doubleComplementI1 = $true) => ! [X0 : $i,X1 : $i] : (($true = (in @ X0 @ (powerset @ X1))) => ($true = (subset @ X0 @ (setminus @ X1 @ (setminus @ X1 @ X0))))))))),
% 1.66/1.31 inference(fool_elimination,[status(thm)],[f13])).
% 1.66/1.31 thf(f13,plain,(
% 1.66/1.31 ~(complementT_lem => (subsetTI => (doubleComplementI1 => ! [X0 : $i,X1 : $i] : ((in @ X0 @ (powerset @ X1)) => (subset @ X0 @ (setminus @ X1 @ (setminus @ X1 @ X0)))))))),
% 1.66/1.31 inference(rectify,[status(thm)],[f5])).
% 1.66/1.31 thf(f5,negated_conjecture,(
% 1.66/1.31 ~(complementT_lem => (subsetTI => (doubleComplementI1 => ! [X1 : $i,X0 : $i] : ((in @ X1 @ (powerset @ X0)) => (subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1)))))))),
% 1.66/1.31 inference(negated_conjecture,[status(cth)],[f4])).
% 1.66/1.31 thf(f4,conjecture,(
% 1.66/1.31 complementT_lem => (subsetTI => (doubleComplementI1 => ! [X1 : $i,X0 : $i] : ((in @ X1 @ (powerset @ X0)) => (subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))))))),
% 1.66/1.31 file('/export/starexec/sandbox2/tmp/tmp.I8Eh1d0lab/DTF2THF_27742.p',doubleComplementSub1)).
% 1.66/1.31 thf(f148,plain,(
% 1.66/1.31 ((in @ sK0 @ (powerset @ sK1)) != $true)),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f147])).
% 1.66/1.31 thf(f147,plain,(
% 1.66/1.31 ($true != $true) | ((in @ sK0 @ (powerset @ sK1)) != $true)),
% 1.66/1.31 inference(superposition,[status(thm)],[f40,f138])).
% 1.66/1.31 thf(f138,plain,(
% 1.66/1.31 ( ! [X0 : $i,X1 : $i] : (((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ((in @ X1 @ (powerset @ X0)) != $true)) )),
% 1.66/1.31 inference(subsumption_resolution,[status(thm)],[f137,f76])).
% 1.66/1.31 thf(f76,plain,(
% 1.66/1.31 ( ! [X0 : $i,X1 : $i] : (((in @ (setminus @ X1 @ X0) @ (powerset @ X1)) = $true) | ($true != (in @ X0 @ (powerset @ X1)))) )),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f59])).
% 1.66/1.31 thf(f59,plain,(
% 1.66/1.31 ( ! [X0 : $i,X1 : $i] : (($true != $true) | ($true != (in @ X0 @ (powerset @ X1))) | ((in @ (setminus @ X1 @ X0) @ (powerset @ X1)) = $true)) )),
% 1.66/1.31 inference(definition_unfolding,[status(thm)],[f46,f42])).
% 1.66/1.31 thf(f42,plain,(
% 1.66/1.31 (complementT_lem = $true)),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f23])).
% 1.66/1.31 thf(f46,plain,(
% 1.66/1.31 ( ! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ (setminus @ X1 @ X0) @ (powerset @ X1)) = $true) | (complementT_lem != $true)) )),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f27])).
% 1.66/1.31 thf(f27,plain,(
% 1.66/1.31 (! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ (setminus @ X1 @ X0) @ (powerset @ X1)) = $true)) | (complementT_lem != $true)) & ((complementT_lem = $true) | (($true = (in @ sK2 @ (powerset @ sK3))) & ((in @ (setminus @ sK3 @ sK2) @ (powerset @ sK3)) != $true)))),
% 1.66/1.31 inference(skolemisation,[status(esa),new_symbols(skolem,[sK2,sK3])],[f25,f26])).
% 1.66/1.31 thf(f26,plain,(
% 1.66/1.31 ? [X2 : $i,X3 : $i] : (((in @ X2 @ (powerset @ X3)) = $true) & ((in @ (setminus @ X3 @ X2) @ (powerset @ X3)) != $true)) => (($true = (in @ sK2 @ (powerset @ sK3))) & ((in @ (setminus @ sK3 @ sK2) @ (powerset @ sK3)) != $true))),
% 1.66/1.31 introduced(definition,[],[choice_axiom])).
% 1.66/1.31 thf(f25,plain,(
% 1.66/1.31 (! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ (setminus @ X1 @ X0) @ (powerset @ X1)) = $true)) | (complementT_lem != $true)) & ((complementT_lem = $true) | ? [X2 : $i,X3 : $i] : (((in @ X2 @ (powerset @ X3)) = $true) & ((in @ (setminus @ X3 @ X2) @ (powerset @ X3)) != $true)))),
% 1.66/1.31 inference(rectify,[status(thm)],[f24])).
% 1.66/1.31 thf(f24,plain,(
% 1.66/1.31 (! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ (setminus @ X1 @ X0) @ (powerset @ X1)) = $true)) | (complementT_lem != $true)) & ((complementT_lem = $true) | ? [X0 : $i,X1 : $i] : (($true = (in @ X0 @ (powerset @ X1))) & ((in @ (setminus @ X1 @ X0) @ (powerset @ X1)) != $true)))),
% 1.66/1.31 inference(nnf_transformation,[status(thm)],[f17])).
% 1.66/1.31 thf(f17,plain,(
% 1.66/1.31 ! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ (setminus @ X1 @ X0) @ (powerset @ X1)) = $true)) <=> (complementT_lem = $true)),
% 1.66/1.31 inference(ennf_transformation,[status(thm)],[f10])).
% 1.66/1.31 thf(f10,plain,(
% 1.66/1.31 ! [X0 : $i,X1 : $i] : (($true = (in @ X0 @ (powerset @ X1))) => ((in @ (setminus @ X1 @ X0) @ (powerset @ X1)) = $true)) <=> (complementT_lem = $true)),
% 1.66/1.31 inference(fool_elimination,[status(thm)],[f9])).
% 1.66/1.31 thf(f9,plain,(
% 1.66/1.31 (! [X0 : $i,X1 : $i] : ((in @ X0 @ (powerset @ X1)) => (in @ (setminus @ X1 @ X0) @ (powerset @ X1))) = complementT_lem)),
% 1.66/1.31 inference(rectify,[status(thm)],[f1])).
% 1.66/1.31 thf(f1,axiom,(
% 1.66/1.31 (! [X1 : $i,X0 : $i] : ((in @ X1 @ (powerset @ X0)) => (in @ (setminus @ X0 @ X1) @ (powerset @ X0))) = complementT_lem)),
% 1.66/1.31 file('/export/starexec/sandbox2/tmp/tmp.I8Eh1d0lab/DTF2THF_27742.p',complementT_lem)).
% 1.66/1.31 thf(f137,plain,(
% 1.66/1.31 ( ! [X0 : $i,X1 : $i] : (((in @ X1 @ (powerset @ X0)) != $true) | ((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ((in @ (setminus @ X0 @ X1) @ (powerset @ X0)) != $true)) )),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f136])).
% 1.66/1.31 thf(f136,plain,(
% 1.66/1.31 ( ! [X0 : $i,X1 : $i] : (((in @ (setminus @ X0 @ X1) @ (powerset @ X0)) != $true) | ($true != $true) | ((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ((in @ X1 @ (powerset @ X0)) != $true)) )),
% 1.66/1.31 inference(superposition,[status(thm)],[f126,f76])).
% 1.66/1.31 thf(f126,plain,(
% 1.66/1.31 ( ! [X0 : $i,X1 : $i] : (($true != (in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X0))) | ((in @ X1 @ (powerset @ X0)) != $true) | ((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true)) )),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f125])).
% 1.66/1.31 thf(f125,plain,(
% 1.66/1.31 ( ! [X0 : $i,X1 : $i] : (((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ($true != (in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X0))) | ($true != $true) | ((in @ X1 @ (powerset @ X0)) != $true)) )),
% 1.66/1.31 inference(duplicate_literal_removal,[status(thm)],[f121])).
% 1.66/1.31 thf(f121,plain,(
% 1.66/1.31 ( ! [X0 : $i,X1 : $i] : (((in @ X1 @ (powerset @ X0)) != $true) | ((in @ X1 @ (powerset @ X0)) != $true) | ($true != (in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X0))) | ((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ($true != $true) | ($true != (in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X0))) | ((in @ X1 @ (powerset @ X0)) != $true)) )),
% 1.66/1.31 inference(superposition,[status(thm)],[f116,f74])).
% 1.66/1.31 thf(f74,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (((in @ (sK7 @ X2 @ X1 @ X0) @ X1) = $true) | ($true != (in @ X0 @ (powerset @ X1))) | ((subset @ X0 @ X2) = $true) | ((in @ X2 @ (powerset @ X1)) != $true)) )),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f68])).
% 1.66/1.31 thf(f68,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (((in @ X2 @ (powerset @ X1)) != $true) | ((subset @ X0 @ X2) = $true) | ($true != $true) | ((in @ (sK7 @ X2 @ X1 @ X0) @ X1) = $true) | ($true != (in @ X0 @ (powerset @ X1)))) )),
% 1.66/1.31 inference(definition_unfolding,[status(thm)],[f57,f41])).
% 1.66/1.31 thf(f41,plain,(
% 1.66/1.31 (subsetTI = $true)),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f23])).
% 1.66/1.31 thf(f57,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ X2 @ (powerset @ X1)) != $true) | ((in @ (sK7 @ X2 @ X1 @ X0) @ X1) = $true) | ((subset @ X0 @ X2) = $true) | (subsetTI != $true)) )),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f38])).
% 1.66/1.31 thf(f38,plain,(
% 1.66/1.31 (! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ! [X2 : $i] : (((in @ X2 @ (powerset @ X1)) != $true) | (($true != (in @ (sK7 @ X2 @ X1 @ X0) @ X2)) & ((in @ (sK7 @ X2 @ X1 @ X0) @ X1) = $true) & ($true = (in @ (sK7 @ X2 @ X1 @ X0) @ X0))) | ((subset @ X0 @ X2) = $true))) | (subsetTI != $true)) & ((subsetTI = $true) | (((in @ sK8 @ (powerset @ sK9)) = $true) & (((in @ sK10 @ (powerset @ sK9)) = $true) & ! [X7 : $i] : (($true = (in @ X7 @ sK10)) | ((in @ X7 @ sK9) != $true) | ((in @ X7 @ sK8) != $true)) & ((subset @ sK8 @ sK10) != $true))))),
% 1.66/1.31 inference(skolemisation,[status(esa),new_symbols(skolem,[sK7,sK8,sK9,sK10])],[f34,f37,f36,f35])).
% 1.66/1.31 thf(f35,plain,(
% 1.66/1.31 ! [X0 : $i,X1 : $i,X2 : $i] : (? [X3 : $i] : (((in @ X3 @ X2) != $true) & ((in @ X3 @ X1) = $true) & ((in @ X3 @ X0) = $true)) => (($true != (in @ (sK7 @ X2 @ X1 @ X0) @ X2)) & ((in @ (sK7 @ X2 @ X1 @ X0) @ X1) = $true) & ($true = (in @ (sK7 @ X2 @ X1 @ X0) @ X0))))),
% 1.66/1.31 introduced(definition,[],[choice_axiom])).
% 1.66/1.31 thf(f36,plain,(
% 1.66/1.31 ? [X4 : $i,X5 : $i] : (((in @ X4 @ (powerset @ X5)) = $true) & ? [X6 : $i] : (((in @ X6 @ (powerset @ X5)) = $true) & ! [X7 : $i] : (($true = (in @ X7 @ X6)) | ((in @ X7 @ X5) != $true) | ((in @ X7 @ X4) != $true)) & ((subset @ X4 @ X6) != $true))) => (((in @ sK8 @ (powerset @ sK9)) = $true) & ? [X6 : $i] : (((in @ X6 @ (powerset @ sK9)) = $true) & ! [X7 : $i] : (($true = (in @ X7 @ X6)) | ((in @ X7 @ sK9) != $true) | ((in @ X7 @ sK8) != $true)) & ((subset @ sK8 @ X6) != $true)))),
% 1.66/1.31 introduced(definition,[],[choice_axiom])).
% 1.66/1.31 thf(f37,plain,(
% 1.66/1.31 ? [X6 : $i] : (((in @ X6 @ (powerset @ sK9)) = $true) & ! [X7 : $i] : (($true = (in @ X7 @ X6)) | ((in @ X7 @ sK9) != $true) | ((in @ X7 @ sK8) != $true)) & ((subset @ sK8 @ X6) != $true)) => (((in @ sK10 @ (powerset @ sK9)) = $true) & ! [X7 : $i] : (($true = (in @ X7 @ sK10)) | ((in @ X7 @ sK9) != $true) | ((in @ X7 @ sK8) != $true)) & ((subset @ sK8 @ sK10) != $true))),
% 1.66/1.31 introduced(definition,[],[choice_axiom])).
% 1.66/1.31 thf(f34,plain,(
% 1.66/1.31 (! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ! [X2 : $i] : (((in @ X2 @ (powerset @ X1)) != $true) | ? [X3 : $i] : (((in @ X3 @ X2) != $true) & ((in @ X3 @ X1) = $true) & ((in @ X3 @ X0) = $true)) | ((subset @ X0 @ X2) = $true))) | (subsetTI != $true)) & ((subsetTI = $true) | ? [X4 : $i,X5 : $i] : (((in @ X4 @ (powerset @ X5)) = $true) & ? [X6 : $i] : (((in @ X6 @ (powerset @ X5)) = $true) & ! [X7 : $i] : (($true = (in @ X7 @ X6)) | ((in @ X7 @ X5) != $true) | ((in @ X7 @ X4) != $true)) & ((subset @ X4 @ X6) != $true))))),
% 1.66/1.31 inference(rectify,[status(thm)],[f33])).
% 1.66/1.31 thf(f33,plain,(
% 1.66/1.31 (! [X1 : $i,X0 : $i] : (((in @ X1 @ (powerset @ X0)) != $true) | ! [X2 : $i] : (((in @ X2 @ (powerset @ X0)) != $true) | ? [X3 : $i] : (((in @ X3 @ X2) != $true) & ((in @ X3 @ X0) = $true) & ((in @ X3 @ X1) = $true)) | ((subset @ X1 @ X2) = $true))) | (subsetTI != $true)) & ((subsetTI = $true) | ? [X1 : $i,X0 : $i] : (((in @ X1 @ (powerset @ X0)) = $true) & ? [X2 : $i] : (((in @ X2 @ (powerset @ X0)) = $true) & ! [X3 : $i] : (((in @ X3 @ X2) = $true) | ((in @ X3 @ X0) != $true) | ((in @ X3 @ X1) != $true)) & ((subset @ X1 @ X2) != $true))))),
% 1.66/1.31 inference(nnf_transformation,[status(thm)],[f19])).
% 1.66/1.31 thf(f19,plain,(
% 1.66/1.31 ! [X1 : $i,X0 : $i] : (((in @ X1 @ (powerset @ X0)) != $true) | ! [X2 : $i] : (((in @ X2 @ (powerset @ X0)) != $true) | ? [X3 : $i] : (((in @ X3 @ X2) != $true) & ((in @ X3 @ X0) = $true) & ((in @ X3 @ X1) = $true)) | ((subset @ X1 @ X2) = $true))) <=> (subsetTI = $true)),
% 1.66/1.31 inference(flattening,[status(thm)],[f18])).
% 1.66/1.31 thf(f18,plain,(
% 1.66/1.31 ! [X0 : $i,X1 : $i] : (! [X2 : $i] : ((((subset @ X1 @ X2) = $true) | ? [X3 : $i] : ((((in @ X3 @ X2) != $true) & ((in @ X3 @ X1) = $true)) & ((in @ X3 @ X0) = $true))) | ((in @ X2 @ (powerset @ X0)) != $true)) | ((in @ X1 @ (powerset @ X0)) != $true)) <=> (subsetTI = $true)),
% 1.66/1.31 inference(ennf_transformation,[status(thm)],[f8])).
% 1.66/1.31 thf(f8,plain,(
% 1.66/1.31 ! [X0 : $i,X1 : $i] : (((in @ X1 @ (powerset @ X0)) = $true) => ! [X2 : $i] : (((in @ X2 @ (powerset @ X0)) = $true) => (! [X3 : $i] : (((in @ X3 @ X0) = $true) => (((in @ X3 @ X1) = $true) => ((in @ X3 @ X2) = $true))) => ((subset @ X1 @ X2) = $true)))) <=> (subsetTI = $true)),
% 1.66/1.31 inference(fool_elimination,[status(thm)],[f7])).
% 1.66/1.31 thf(f7,plain,(
% 1.66/1.31 (subsetTI = ! [X0 : $i,X1 : $i] : ((in @ X1 @ (powerset @ X0)) => ! [X2 : $i] : ((in @ X2 @ (powerset @ X0)) => (! [X3 : $i] : ((in @ X3 @ X0) => ((in @ X3 @ X1) => (in @ X3 @ X2))) => (subset @ X1 @ X2)))))),
% 1.66/1.31 inference(rectify,[status(thm)],[f2])).
% 1.66/1.31 thf(f2,axiom,(
% 1.66/1.31 (subsetTI = ! [X0 : $i,X1 : $i] : ((in @ X1 @ (powerset @ X0)) => ! [X2 : $i] : ((in @ X2 @ (powerset @ X0)) => (! [X3 : $i] : ((in @ X3 @ X0) => ((in @ X3 @ X1) => (in @ X3 @ X2))) => (subset @ X1 @ X2)))))),
% 1.66/1.31 file('/export/starexec/sandbox2/tmp/tmp.I8Eh1d0lab/DTF2THF_27742.p',subsetTI)).
% 1.66/1.31 thf(f116,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true != (in @ (sK7 @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ X2 @ X1) @ X0)) | ((in @ X1 @ (powerset @ X2)) != $true) | ((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ((in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X2)) != $true) | ((in @ X1 @ (powerset @ X0)) != $true)) )),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f115])).
% 1.66/1.31 thf(f115,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (((in @ X1 @ (powerset @ X0)) != $true) | ((in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X2)) != $true) | ((in @ X1 @ (powerset @ X2)) != $true) | ($true != $true) | ($true != (in @ (sK7 @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ X2 @ X1) @ X0)) | ((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true)) )),
% 1.66/1.31 inference(duplicate_literal_removal,[status(thm)],[f114])).
% 1.66/1.31 thf(f114,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true != $true) | ((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ((in @ X1 @ (powerset @ X2)) != $true) | ((subset @ X1 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ((in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X2)) != $true) | ((in @ X1 @ (powerset @ X2)) != $true) | ((in @ X1 @ (powerset @ X0)) != $true) | ($true != (in @ (sK7 @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ X2 @ X1) @ X0)) | ((in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X2)) != $true)) )),
% 1.66/1.31 inference(superposition,[status(thm)],[f86,f75])).
% 1.66/1.31 thf(f75,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true = (in @ (sK7 @ X2 @ X1 @ X0) @ X0)) | ($true != (in @ X0 @ (powerset @ X1))) | ((subset @ X0 @ X2) = $true) | ((in @ X2 @ (powerset @ X1)) != $true)) )),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f69])).
% 1.66/1.31 thf(f69,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (((in @ X2 @ (powerset @ X1)) != $true) | ($true = (in @ (sK7 @ X2 @ X1 @ X0) @ X0)) | ((subset @ X0 @ X2) = $true) | ($true != (in @ X0 @ (powerset @ X1))) | ($true != $true)) )),
% 1.66/1.31 inference(definition_unfolding,[status(thm)],[f56,f41])).
% 1.66/1.31 thf(f56,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ X2 @ (powerset @ X1)) != $true) | ($true = (in @ (sK7 @ X2 @ X1 @ X0) @ X0)) | ((subset @ X0 @ X2) = $true) | (subsetTI != $true)) )),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f38])).
% 1.66/1.31 thf(f86,plain,(
% 1.66/1.31 ( ! [X2 : $i,X3 : $i,X0 : $i,X1 : $i] : (($true != (in @ (sK7 @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ X2 @ X3) @ X1)) | ((in @ (sK7 @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ X2 @ X3) @ X0) != $true) | ((in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X2)) != $true) | ((in @ X3 @ (powerset @ X2)) != $true) | ((subset @ X3 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ((in @ X1 @ (powerset @ X0)) != $true)) )),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f79])).
% 1.66/1.31 thf(f79,plain,(
% 1.66/1.31 ( ! [X2 : $i,X3 : $i,X0 : $i,X1 : $i] : (((in @ (sK7 @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ X2 @ X3) @ X0) != $true) | ($true != (in @ (sK7 @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ X2 @ X3) @ X1)) | ((subset @ X3 @ (setminus @ X0 @ (setminus @ X0 @ X1))) = $true) | ((in @ (setminus @ X0 @ (setminus @ X0 @ X1)) @ (powerset @ X2)) != $true) | ($true != $true) | ((in @ X1 @ (powerset @ X0)) != $true) | ((in @ X3 @ (powerset @ X2)) != $true)) )),
% 1.66/1.31 inference(superposition,[status(thm)],[f78,f77])).
% 1.66/1.31 thf(f77,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) = $true) | ($true != (in @ X0 @ (powerset @ X1))) | ($true != (in @ X2 @ X1)) | ((in @ X2 @ X0) != $true)) )),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f62])).
% 1.66/1.31 thf(f62,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true != $true) | ($true != (in @ X2 @ X1)) | ((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) = $true) | ($true != (in @ X0 @ (powerset @ X1))) | ((in @ X2 @ X0) != $true)) )),
% 1.66/1.31 inference(definition_unfolding,[status(thm)],[f51,f43])).
% 1.66/1.31 thf(f43,plain,(
% 1.66/1.31 (doubleComplementI1 = $true)),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f23])).
% 1.66/1.31 thf(f51,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ X2 @ X0) != $true) | ($true != (in @ X2 @ X1)) | ((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) = $true) | (doubleComplementI1 != $true)) )),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f32])).
% 1.66/1.31 thf(f32,plain,(
% 1.66/1.31 (! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ! [X2 : $i] : (((in @ X2 @ X0) != $true) | ($true != (in @ X2 @ X1)) | ((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) = $true))) | (doubleComplementI1 != $true)) & ((doubleComplementI1 = $true) | (((in @ sK4 @ (powerset @ sK5)) = $true) & (($true = (in @ sK6 @ sK4)) & ((in @ sK6 @ sK5) = $true) & ($true != (in @ sK6 @ (setminus @ sK5 @ (setminus @ sK5 @ sK4)))))))),
% 1.66/1.31 inference(skolemisation,[status(esa),new_symbols(skolem,[sK4,sK5,sK6])],[f29,f31,f30])).
% 1.66/1.31 thf(f30,plain,(
% 1.66/1.31 ? [X3 : $i,X4 : $i] : (($true = (in @ X3 @ (powerset @ X4))) & ? [X5 : $i] : (($true = (in @ X5 @ X3)) & ($true = (in @ X5 @ X4)) & ($true != (in @ X5 @ (setminus @ X4 @ (setminus @ X4 @ X3)))))) => (((in @ sK4 @ (powerset @ sK5)) = $true) & ? [X5 : $i] : (($true = (in @ X5 @ sK4)) & ((in @ X5 @ sK5) = $true) & ((in @ X5 @ (setminus @ sK5 @ (setminus @ sK5 @ sK4))) != $true)))),
% 1.66/1.31 introduced(definition,[],[choice_axiom])).
% 1.66/1.31 thf(f31,plain,(
% 1.66/1.31 ? [X5 : $i] : (($true = (in @ X5 @ sK4)) & ((in @ X5 @ sK5) = $true) & ((in @ X5 @ (setminus @ sK5 @ (setminus @ sK5 @ sK4))) != $true)) => (($true = (in @ sK6 @ sK4)) & ((in @ sK6 @ sK5) = $true) & ($true != (in @ sK6 @ (setminus @ sK5 @ (setminus @ sK5 @ sK4)))))),
% 1.66/1.31 introduced(definition,[],[choice_axiom])).
% 1.66/1.31 thf(f29,plain,(
% 1.66/1.31 (! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ! [X2 : $i] : (((in @ X2 @ X0) != $true) | ($true != (in @ X2 @ X1)) | ((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) = $true))) | (doubleComplementI1 != $true)) & ((doubleComplementI1 = $true) | ? [X3 : $i,X4 : $i] : (($true = (in @ X3 @ (powerset @ X4))) & ? [X5 : $i] : (($true = (in @ X5 @ X3)) & ($true = (in @ X5 @ X4)) & ($true != (in @ X5 @ (setminus @ X4 @ (setminus @ X4 @ X3)))))))),
% 1.66/1.31 inference(rectify,[status(thm)],[f28])).
% 1.66/1.31 thf(f28,plain,(
% 1.66/1.31 (! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ! [X2 : $i] : (((in @ X2 @ X0) != $true) | ($true != (in @ X2 @ X1)) | ((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) = $true))) | (doubleComplementI1 != $true)) & ((doubleComplementI1 = $true) | ? [X0 : $i,X1 : $i] : (($true = (in @ X0 @ (powerset @ X1))) & ? [X2 : $i] : (((in @ X2 @ X0) = $true) & ($true = (in @ X2 @ X1)) & ((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) != $true))))),
% 1.66/1.31 inference(nnf_transformation,[status(thm)],[f21])).
% 1.66/1.31 thf(f21,plain,(
% 1.66/1.31 ! [X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ! [X2 : $i] : (((in @ X2 @ X0) != $true) | ($true != (in @ X2 @ X1)) | ((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) = $true))) <=> (doubleComplementI1 = $true)),
% 1.66/1.31 inference(flattening,[status(thm)],[f20])).
% 1.66/1.31 thf(f20,plain,(
% 1.66/1.31 (doubleComplementI1 = $true) <=> ! [X1 : $i,X0 : $i] : (! [X2 : $i] : ((((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) = $true) | ((in @ X2 @ X0) != $true)) | ($true != (in @ X2 @ X1))) | ($true != (in @ X0 @ (powerset @ X1))))),
% 1.66/1.31 inference(ennf_transformation,[status(thm)],[f12])).
% 1.66/1.31 thf(f12,plain,(
% 1.66/1.31 (doubleComplementI1 = $true) <=> ! [X1 : $i,X0 : $i] : (($true = (in @ X0 @ (powerset @ X1))) => ! [X2 : $i] : (($true = (in @ X2 @ X1)) => (((in @ X2 @ X0) = $true) => ((in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0))) = $true))))),
% 1.66/1.31 inference(fool_elimination,[status(thm)],[f11])).
% 1.66/1.31 thf(f11,plain,(
% 1.66/1.31 (doubleComplementI1 = ! [X0 : $i,X1 : $i] : ((in @ X0 @ (powerset @ X1)) => ! [X2 : $i] : ((in @ X2 @ X1) => ((in @ X2 @ X0) => (in @ X2 @ (setminus @ X1 @ (setminus @ X1 @ X0)))))))),
% 1.66/1.31 inference(rectify,[status(thm)],[f3])).
% 1.66/1.31 thf(f3,axiom,(
% 1.66/1.31 (doubleComplementI1 = ! [X1 : $i,X0 : $i] : ((in @ X1 @ (powerset @ X0)) => ! [X3 : $i] : ((in @ X3 @ X0) => ((in @ X3 @ X1) => (in @ X3 @ (setminus @ X0 @ (setminus @ X0 @ X1)))))))),
% 1.66/1.31 file('/export/starexec/sandbox2/tmp/tmp.I8Eh1d0lab/DTF2THF_27742.p',doubleComplementI1)).
% 1.66/1.31 thf(f78,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true != (in @ (sK7 @ X2 @ X1 @ X0) @ X2)) | ($true != (in @ X0 @ (powerset @ X1))) | ((in @ X2 @ (powerset @ X1)) != $true) | ((subset @ X0 @ X2) = $true)) )),
% 1.66/1.31 inference(trivial_inequality_removal,[status(thm)],[f67])).
% 1.66/1.31 thf(f67,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ X2 @ (powerset @ X1)) != $true) | ((subset @ X0 @ X2) = $true) | ($true != (in @ (sK7 @ X2 @ X1 @ X0) @ X2)) | ($true != $true)) )),
% 1.66/1.31 inference(definition_unfolding,[status(thm)],[f58,f41])).
% 1.66/1.31 thf(f58,plain,(
% 1.66/1.31 ( ! [X2 : $i,X0 : $i,X1 : $i] : (($true != (in @ X0 @ (powerset @ X1))) | ((in @ X2 @ (powerset @ X1)) != $true) | ($true != (in @ (sK7 @ X2 @ X1 @ X0) @ X2)) | ((subset @ X0 @ X2) = $true) | (subsetTI != $true)) )),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f38])).
% 1.66/1.31 thf(f40,plain,(
% 1.66/1.31 ((subset @ sK0 @ (setminus @ sK1 @ (setminus @ sK1 @ sK0))) != $true)),
% 1.66/1.31 inference(cnf_transformation,[status(thm)],[f23])).
% 1.66/1.31 % SZS output end Proof for DTF2THF_27742
% 1.66/1.31 % (28010)------------------------------
% 1.66/1.31 % (28010)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.66/1.31 % (28010)Termination reason: Refutation
% 1.66/1.31
% 1.66/1.31 % (28010)Memory used [KB]: 5628
% 1.66/1.31 % (28010)Time elapsed: 0.016 s
% 1.66/1.31 % (28010)Instructions burned: 37 (million)
% 1.66/1.31 % (28010)------------------------------
% 1.66/1.31 % (28010)------------------------------
% 1.66/1.31 % (28004)Success in time 0.024 s
%------------------------------------------------------------------------------