%------------------------------------------------------------------------------
% File : LEO-II---2.3.1
% Problem : SET009+3 : TPTP v9.3.1. Released v2.2.0.
% Transfm : none
% Format : tptp:raw
% Command : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n017.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 Oct 7 10:38:50 AM UTC 2026
% Result : Theorem 0.10s 0.23s
% Output : CNFRefutation 0.10s
% Verified :
% SZS Type : Refutation
% Derivation depth : 18
% Number of leaves : 4
% Syntax : Number of formulae : 67 ( 38 unt; 0 typ; 0 def)
% Number of atoms : 378 ( 94 equ; 0 cnn)
% Maximal formula atoms : 3 ( 5 avg)
% Number of connectives : 785 ( 172 ~; 105 |; 3 &; 490 @)
% ( 6 <=>; 9 =>; 0 <=; 0 <~>)
% Maximal formula depth : 9 ( 3 avg)
% Number of types : 2 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 10 ( 7 usr; 5 con; 0-2 aty)
% Number of variables : 163 ( 0 ^; 163 !; 0 ?; 163 :)
% Comments :
%------------------------------------------------------------------------------
thf(tp_difference,type,
difference: $i > $i > $i ).
thf(tp_member,type,
member: $i > $i > $o ).
thf(tp_sK1_B,type,
sK1_B: $i ).
thf(tp_sK2_SY10,type,
sK2_SY10: $i ).
thf(tp_sK3_SY12,type,
sK3_SY12: $i ).
thf(tp_sK4_SY20,type,
sK4_SY20: $i > $i > $i ).
thf(tp_subset,type,
subset: $i > $i > $o ).
thf(1,axiom,
! [B: $i] : ( subset @ B @ B ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',reflexivity_of_subset) ).
thf(2,axiom,
! [B: $i,C: $i] :
( ( subset @ B @ C )
<=> ! [D: $i] :
( ( member @ D @ B )
=> ( member @ D @ C ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',subset_defn) ).
thf(3,axiom,
! [B: $i,C: $i,D: $i] :
( ( member @ D @ ( difference @ B @ C ) )
<=> ( ( member @ D @ B )
& ~ ( member @ D @ C ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',difference_defn) ).
thf(4,conjecture,
! [B: $i,C: $i,D: $i] :
( ( subset @ B @ C )
=> ( subset @ ( difference @ D @ C ) @ ( difference @ D @ B ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_subset_difference) ).
thf(5,negated_conjecture,
( ( ! [B: $i,C: $i,D: $i] :
( ( subset @ B @ C )
=> ( subset @ ( difference @ D @ C ) @ ( difference @ D @ B ) ) ) )
= $false ),
inference(negate_conjecture,[status(cth)],[4]) ).
thf(6,plain,
( ( ! [B: $i,C: $i,D: $i] :
( ( subset @ B @ C )
=> ( subset @ ( difference @ D @ C ) @ ( difference @ D @ B ) ) ) )
= $false ),
inference(unfold_def,[status(thm)],[5]) ).
thf(7,plain,
( ( ! [B: $i] : ( subset @ B @ B ) )
= $true ),
inference(unfold_def,[status(thm)],[1]) ).
thf(8,plain,
( ( ! [B: $i,C: $i] :
( ( subset @ B @ C )
<=> ! [D: $i] :
( ( member @ D @ B )
=> ( member @ D @ C ) ) ) )
= $true ),
inference(unfold_def,[status(thm)],[2]) ).
thf(9,plain,
( ( ! [B: $i,C: $i,D: $i] :
( ( member @ D @ ( difference @ B @ C ) )
<=> ( ( member @ D @ B )
& ~ ( member @ D @ C ) ) ) )
= $true ),
inference(unfold_def,[status(thm)],[3]) ).
thf(10,plain,
( ( ! [SY10: $i,SY11: $i] :
( ( subset @ sK1_B @ SY10 )
=> ( subset @ ( difference @ SY11 @ SY10 ) @ ( difference @ SY11 @ sK1_B ) ) ) )
= $false ),
inference(extcnf_forall_neg,[status(esa)],[6]) ).
thf(11,plain,
( ( ! [SY12: $i] :
( ( subset @ sK1_B @ sK2_SY10 )
=> ( subset @ ( difference @ SY12 @ sK2_SY10 ) @ ( difference @ SY12 @ sK1_B ) ) ) )
= $false ),
inference(extcnf_forall_neg,[status(esa)],[10]) ).
thf(12,plain,
( ( ( subset @ sK1_B @ sK2_SY10 )
=> ( subset @ ( difference @ sK3_SY12 @ sK2_SY10 ) @ ( difference @ sK3_SY12 @ sK1_B ) ) )
= $false ),
inference(extcnf_forall_neg,[status(esa)],[11]) ).
thf(13,plain,
( ( subset @ sK1_B @ sK2_SY10 )
= $true ),
inference(standard_cnf,[status(thm)],[12]) ).
thf(14,plain,
( ( subset @ ( difference @ sK3_SY12 @ sK2_SY10 ) @ ( difference @ sK3_SY12 @ sK1_B ) )
= $false ),
inference(standard_cnf,[status(thm)],[12]) ).
thf(15,plain,
( ( ~ ( subset @ ( difference @ sK3_SY12 @ sK2_SY10 ) @ ( difference @ sK3_SY12 @ sK1_B ) ) )
= $true ),
inference(polarity_switch,[status(thm)],[14]) ).
thf(16,plain,
( ( ! [B: $i,C: $i,D: $i] :
( ( member @ D @ ( difference @ B @ C ) )
<=> ( ( member @ D @ B )
& ~ ( member @ D @ C ) ) ) )
= $true ),
inference(copy,[status(thm)],[9]) ).
thf(17,plain,
( ( ! [B: $i,C: $i] :
( ( subset @ B @ C )
<=> ! [D: $i] :
( ( member @ D @ B )
=> ( member @ D @ C ) ) ) )
= $true ),
inference(copy,[status(thm)],[8]) ).
thf(18,plain,
( ( ! [B: $i] : ( subset @ B @ B ) )
= $true ),
inference(copy,[status(thm)],[7]) ).
thf(19,plain,
( ( subset @ sK1_B @ sK2_SY10 )
= $true ),
inference(copy,[status(thm)],[13]) ).
thf(20,plain,
( ( ~ ( subset @ ( difference @ sK3_SY12 @ sK2_SY10 ) @ ( difference @ sK3_SY12 @ sK1_B ) ) )
= $true ),
inference(copy,[status(thm)],[15]) ).
thf(21,plain,
( ( ! [SX0: $i,SX1: $i,SX2: $i] :
~ ( ~ ( ~ ( member @ SX2 @ ( difference @ SX0 @ SX1 ) )
| ~ ( ~ ( member @ SX2 @ SX0 )
| ~ ~ ( member @ SX2 @ SX1 ) ) )
| ~ ( ~ ~ ( ~ ( member @ SX2 @ SX0 )
| ~ ~ ( member @ SX2 @ SX1 ) )
| ( member @ SX2 @ ( difference @ SX0 @ SX1 ) ) ) ) )
= $true ),
inference(unfold_def,[status(thm)],[16]) ).
thf(22,plain,
( ( ! [SX0: $i,SX1: $i] :
~ ( ~ ( ~ ( subset @ SX0 @ SX1 )
| ! [SX2: $i] :
( ~ ( member @ SX2 @ SX0 )
| ( member @ SX2 @ SX1 ) ) )
| ~ ( ~ ! [SX2: $i] :
( ~ ( member @ SX2 @ SX0 )
| ( member @ SX2 @ SX1 ) )
| ( subset @ SX0 @ SX1 ) ) ) )
= $true ),
inference(unfold_def,[status(thm)],[17]) ).
thf(23,plain,
! [SV1: $i] :
( ( subset @ SV1 @ SV1 )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[18]) ).
thf(24,plain,
( ( subset @ ( difference @ sK3_SY12 @ sK2_SY10 ) @ ( difference @ sK3_SY12 @ sK1_B ) )
= $false ),
inference(extcnf_not_pos,[status(thm)],[20]) ).
thf(25,plain,
! [SV2: $i] :
( ( ! [SY13: $i,SY14: $i] :
~ ( ~ ( ~ ( member @ SY14 @ ( difference @ SV2 @ SY13 ) )
| ~ ( ~ ( member @ SY14 @ SV2 )
| ~ ~ ( member @ SY14 @ SY13 ) ) )
| ~ ( ~ ~ ( ~ ( member @ SY14 @ SV2 )
| ~ ~ ( member @ SY14 @ SY13 ) )
| ( member @ SY14 @ ( difference @ SV2 @ SY13 ) ) ) ) )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[21]) ).
thf(26,plain,
! [SV3: $i] :
( ( ! [SY15: $i] :
~ ( ~ ( ~ ( subset @ SV3 @ SY15 )
| ! [SY16: $i] :
( ~ ( member @ SY16 @ SV3 )
| ( member @ SY16 @ SY15 ) ) )
| ~ ( ~ ! [SY17: $i] :
( ~ ( member @ SY17 @ SV3 )
| ( member @ SY17 @ SY15 ) )
| ( subset @ SV3 @ SY15 ) ) ) )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[22]) ).
thf(27,plain,
! [SV4: $i,SV2: $i] :
( ( ! [SY18: $i] :
~ ( ~ ( ~ ( member @ SY18 @ ( difference @ SV2 @ SV4 ) )
| ~ ( ~ ( member @ SY18 @ SV2 )
| ~ ~ ( member @ SY18 @ SV4 ) ) )
| ~ ( ~ ~ ( ~ ( member @ SY18 @ SV2 )
| ~ ~ ( member @ SY18 @ SV4 ) )
| ( member @ SY18 @ ( difference @ SV2 @ SV4 ) ) ) ) )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[25]) ).
thf(28,plain,
! [SV5: $i,SV3: $i] :
( ( ~ ( ~ ( ~ ( subset @ SV3 @ SV5 )
| ! [SY19: $i] :
( ~ ( member @ SY19 @ SV3 )
| ( member @ SY19 @ SV5 ) ) )
| ~ ( ~ ! [SY20: $i] :
( ~ ( member @ SY20 @ SV3 )
| ( member @ SY20 @ SV5 ) )
| ( subset @ SV3 @ SV5 ) ) ) )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[26]) ).
thf(29,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ~ ( ~ ( ~ ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
| ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) ) )
| ~ ( ~ ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) )
| ( member @ SV6 @ ( difference @ SV2 @ SV4 ) ) ) ) )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[27]) ).
thf(30,plain,
! [SV5: $i,SV3: $i] :
( ( ~ ( ~ ( subset @ SV3 @ SV5 )
| ! [SY19: $i] :
( ~ ( member @ SY19 @ SV3 )
| ( member @ SY19 @ SV5 ) ) )
| ~ ( ~ ! [SY20: $i] :
( ~ ( member @ SY20 @ SV3 )
| ( member @ SY20 @ SV5 ) )
| ( subset @ SV3 @ SV5 ) ) )
= $false ),
inference(extcnf_not_pos,[status(thm)],[28]) ).
thf(31,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ~ ( ~ ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
| ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) ) )
| ~ ( ~ ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) )
| ( member @ SV6 @ ( difference @ SV2 @ SV4 ) ) ) )
= $false ),
inference(extcnf_not_pos,[status(thm)],[29]) ).
thf(32,plain,
! [SV5: $i,SV3: $i] :
( ( ~ ( ~ ( subset @ SV3 @ SV5 )
| ! [SY19: $i] :
( ~ ( member @ SY19 @ SV3 )
| ( member @ SY19 @ SV5 ) ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[30]) ).
thf(33,plain,
! [SV5: $i,SV3: $i] :
( ( ~ ( ~ ! [SY20: $i] :
( ~ ( member @ SY20 @ SV3 )
| ( member @ SY20 @ SV5 ) )
| ( subset @ SV3 @ SV5 ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[30]) ).
thf(34,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ~ ( ~ ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
| ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[31]) ).
thf(35,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ~ ( ~ ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) )
| ( member @ SV6 @ ( difference @ SV2 @ SV4 ) ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[31]) ).
thf(36,plain,
! [SV5: $i,SV3: $i] :
( ( ~ ( subset @ SV3 @ SV5 )
| ! [SY19: $i] :
( ~ ( member @ SY19 @ SV3 )
| ( member @ SY19 @ SV5 ) ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[32]) ).
thf(37,plain,
! [SV5: $i,SV3: $i] :
( ( ~ ! [SY20: $i] :
( ~ ( member @ SY20 @ SV3 )
| ( member @ SY20 @ SV5 ) )
| ( subset @ SV3 @ SV5 ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[33]) ).
thf(38,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ~ ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
| ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[34]) ).
thf(39,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ~ ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) )
| ( member @ SV6 @ ( difference @ SV2 @ SV4 ) ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[35]) ).
thf(40,plain,
! [SV5: $i,SV3: $i] :
( ( ( ~ ( subset @ SV3 @ SV5 ) )
= $true )
| ( ( ! [SY19: $i] :
( ~ ( member @ SY19 @ SV3 )
| ( member @ SY19 @ SV5 ) ) )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[36]) ).
thf(41,plain,
! [SV5: $i,SV3: $i] :
( ( ( ~ ! [SY20: $i] :
( ~ ( member @ SY20 @ SV3 )
| ( member @ SY20 @ SV5 ) ) )
= $true )
| ( ( subset @ SV3 @ SV5 )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[37]) ).
thf(42,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( ~ ( member @ SV6 @ ( difference @ SV2 @ SV4 ) ) )
= $true )
| ( ( ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) ) )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[38]) ).
thf(43,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( ~ ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) ) )
= $true )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[39]) ).
thf(44,plain,
! [SV5: $i,SV3: $i] :
( ( ( subset @ SV3 @ SV5 )
= $false )
| ( ( ! [SY19: $i] :
( ~ ( member @ SY19 @ SV3 )
| ( member @ SY19 @ SV5 ) ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[40]) ).
thf(45,plain,
! [SV5: $i,SV3: $i] :
( ( ( ! [SY20: $i] :
( ~ ( member @ SY20 @ SV3 )
| ( member @ SY20 @ SV5 ) ) )
= $false )
| ( ( subset @ SV3 @ SV5 )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[41]) ).
thf(46,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $false )
| ( ( ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[42]) ).
thf(47,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( ~ ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) ) )
= $false )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[43]) ).
thf(48,plain,
! [SV5: $i,SV3: $i,SV7: $i] :
( ( ( ~ ( member @ SV7 @ SV3 )
| ( member @ SV7 @ SV5 ) )
= $true )
| ( ( subset @ SV3 @ SV5 )
= $false ) ),
inference(extcnf_forall_pos,[status(thm)],[44]) ).
thf(49,plain,
! [SV3: $i,SV5: $i] :
( ( ( ~ ( member @ ( sK4_SY20 @ SV5 @ SV3 ) @ SV3 )
| ( member @ ( sK4_SY20 @ SV5 @ SV3 ) @ SV5 ) )
= $false )
| ( ( subset @ SV3 @ SV5 )
= $true ) ),
inference(extcnf_forall_neg,[status(esa)],[45]) ).
thf(50,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) )
= $false )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $false ) ),
inference(extcnf_not_pos,[status(thm)],[46]) ).
thf(51,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( ~ ( member @ SV6 @ SV2 )
| ~ ~ ( member @ SV6 @ SV4 ) )
= $true )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $true ) ),
inference(extcnf_not_neg,[status(thm)],[47]) ).
thf(52,plain,
! [SV5: $i,SV3: $i,SV7: $i] :
( ( ( ~ ( member @ SV7 @ SV3 ) )
= $true )
| ( ( member @ SV7 @ SV5 )
= $true )
| ( ( subset @ SV3 @ SV5 )
= $false ) ),
inference(extcnf_or_pos,[status(thm)],[48]) ).
thf(53,plain,
! [SV3: $i,SV5: $i] :
( ( ( ~ ( member @ ( sK4_SY20 @ SV5 @ SV3 ) @ SV3 ) )
= $false )
| ( ( subset @ SV3 @ SV5 )
= $true ) ),
inference(extcnf_or_neg,[status(thm)],[49]) ).
thf(54,plain,
! [SV3: $i,SV5: $i] :
( ( ( member @ ( sK4_SY20 @ SV5 @ SV3 ) @ SV5 )
= $false )
| ( ( subset @ SV3 @ SV5 )
= $true ) ),
inference(extcnf_or_neg,[status(thm)],[49]) ).
thf(55,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( ~ ( member @ SV6 @ SV2 ) )
= $false )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $false ) ),
inference(extcnf_or_neg,[status(thm)],[50]) ).
thf(56,plain,
! [SV2: $i,SV4: $i,SV6: $i] :
( ( ( ~ ~ ( member @ SV6 @ SV4 ) )
= $false )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $false ) ),
inference(extcnf_or_neg,[status(thm)],[50]) ).
thf(57,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( ~ ( member @ SV6 @ SV2 ) )
= $true )
| ( ( ~ ~ ( member @ SV6 @ SV4 ) )
= $true )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[51]) ).
thf(58,plain,
! [SV5: $i,SV3: $i,SV7: $i] :
( ( ( member @ SV7 @ SV3 )
= $false )
| ( ( member @ SV7 @ SV5 )
= $true )
| ( ( subset @ SV3 @ SV5 )
= $false ) ),
inference(extcnf_not_pos,[status(thm)],[52]) ).
thf(59,plain,
! [SV3: $i,SV5: $i] :
( ( ( member @ ( sK4_SY20 @ SV5 @ SV3 ) @ SV3 )
= $true )
| ( ( subset @ SV3 @ SV5 )
= $true ) ),
inference(extcnf_not_neg,[status(thm)],[53]) ).
thf(60,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( member @ SV6 @ SV2 )
= $true )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $false ) ),
inference(extcnf_not_neg,[status(thm)],[55]) ).
thf(61,plain,
! [SV2: $i,SV4: $i,SV6: $i] :
( ( ( ~ ( member @ SV6 @ SV4 ) )
= $true )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $false ) ),
inference(extcnf_not_neg,[status(thm)],[56]) ).
thf(62,plain,
! [SV4: $i,SV2: $i,SV6: $i] :
( ( ( member @ SV6 @ SV2 )
= $false )
| ( ( ~ ~ ( member @ SV6 @ SV4 ) )
= $true )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[57]) ).
thf(63,plain,
! [SV2: $i,SV4: $i,SV6: $i] :
( ( ( member @ SV6 @ SV4 )
= $false )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $false ) ),
inference(extcnf_not_pos,[status(thm)],[61]) ).
thf(64,plain,
! [SV2: $i,SV4: $i,SV6: $i] :
( ( ( ~ ( member @ SV6 @ SV4 ) )
= $false )
| ( ( member @ SV6 @ SV2 )
= $false )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[62]) ).
thf(65,plain,
! [SV2: $i,SV4: $i,SV6: $i] :
( ( ( member @ SV6 @ SV4 )
= $true )
| ( ( member @ SV6 @ SV2 )
= $false )
| ( ( member @ SV6 @ ( difference @ SV2 @ SV4 ) )
= $true ) ),
inference(extcnf_not_neg,[status(thm)],[64]) ).
thf(66,plain,
$false = $true,
inference(fo_atp_e,[status(thm)],[19,65,63,60,59,58,54,24,23]) ).
thf(67,plain,
$false,
inference(solved_all_splits,[solved_all_splits(join,[])],[66]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET009+3 : TPTP v9.3.1. Released v2.2.0.
% 0.00/0.04 % Command : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.10/0.18 % Computer : n017.cluster.edu
% 0.10/0.18 % Model : x86_64 x86_64
% 0.10/0.18 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.18 % Memory : 8046.5625MB
% 0.10/0.18 % OS : Linux 6.8.0-71-generic
% 0.10/0.18 % CPULimit : 300
% 0.10/0.18 % WCLimit : 300
% 0.10/0.18 % DateTime : Tue Oct 6 14:21:30 UTC 2026
% 0.10/0.18 % CPUTime :
% 0.10/0.18 Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p
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% 0.10/0.23 No.of.Axioms: 3
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% 0.10/0.23 Length.of.Defs: 0
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% 0.10/0.23 Contains.Choice.Funs: false
% 0.10/0.23 .
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% 0.10/0.23 ********************************
% 0.10/0.23 * All subproblems solved! *
% 0.10/0.23 ********************************
% 0.10/0.23 % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:0,axioms:4,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:66,loop_count:0,foatp_calls:1,translation:fof_full)
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% 0.10/0.23 %**** Beginning of derivation protocol ****
% 0.10/0.23 % SZS output start CNFRefutation
% See solution above
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% 0.10/0.23 %**** End of derivation protocol ****
% 0.10/0.23 %**** no. of clauses in derivation: 67 ****
% 0.10/0.23 %**** clause counter: 66 ****
% 0.10/0.23
% 0.10/0.23 % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:0,axioms:4,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:66,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------