%------------------------------------------------------------------------------
% File : LEO-II---2.3.1
% Problem : SYO025^1 : TPTP v9.3.1. Released v3.7.0.
% Transfm : none
% Format : tptp:raw
% Command : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n011.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 11:07:24 AM UTC 2026
% Result : Theorem 0.08s 0.23s
% Output : CNFRefutation 0.08s
% Verified :
% SZS Type : Refutation
% Derivation depth : 26
% Number of leaves : 1
% Syntax : Number of formulae : 48 ( 21 unt; 0 typ; 0 def)
% Number of atoms : 313 ( 98 equ; 5 cnn)
% Maximal formula atoms : 4 ( 6 avg)
% Number of connectives : 301 ( 195 ~; 101 |; 5 &; 0 @)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 4 ( 2 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 6 ( 2 usr; 5 con; 0-2 aty)
% Number of variables : 30 ( 28 ^; 2 !; 0 ?; 30 :)
% Comments :
%------------------------------------------------------------------------------
thf(tp_sK1_SV1,type,
sK1_SV1: $o ).
thf(tp_sK2_SV2,type,
sK2_SV2: $o ).
thf(1,conjecture,
( (&)
= ( ^ [X: $o,Y: $o] :
~ ( ~ X
| ~ Y ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',conj) ).
thf(2,negated_conjecture,
( ( (&)
= ( ^ [X: $o,Y: $o] :
~ ( ~ X
| ~ Y ) ) )
= $false ),
inference(negate_conjecture,[status(cth)],[1]) ).
thf(3,plain,
( ( (&)
= ( ^ [X: $o,Y: $o] :
~ ( ~ X
| ~ Y ) ) )
= $false ),
inference(unfold_def,[status(thm)],[2]) ).
thf(4,plain,
( ( (&)
!= ( ^ [X: $o,Y: $o] :
~ ( ~ X
| ~ Y ) ) )
= $true ),
inference(polarity_switch,[status(thm)],[3]) ).
thf(5,plain,
( ( (&)
!= ( ^ [X: $o,Y: $o] :
~ ( ~ X
| ~ Y ) ) )
= $true ),
inference(copy,[status(thm)],[4]) ).
thf(6,plain,
( ( ( ^ [SX0: $o,SX1: $o] :
~ ( ~ SX0
| ~ SX1 ) )
!= ( ^ [SX0: $o,SX1: $o] :
~ ( ~ SX0
| ~ SX1 ) ) )
= $true ),
inference(unfold_def,[status(thm)],[5]) ).
thf(7,plain,
( ( ( ^ [SX0: $o,SX1: $o] :
~ ( ~ SX0
| ~ SX1 ) )
= ( ^ [SX0: $o,SX1: $o] :
~ ( ~ SX0
| ~ SX1 ) ) )
= $false ),
inference(extcnf_not_pos,[status(thm)],[6]) ).
thf(8,plain,
( ( ! [SV1: $o] :
( ( ^ [SY2: $o] :
~ ( ~ SV1
| ~ SY2 ) )
= ( ^ [SY3: $o] :
~ ( ~ SV1
| ~ SY3 ) ) ) )
= $false ),
inference(extcnf_equal_neg,[status(thm)],[7]) ).
thf(9,plain,
( ( ( ^ [SX0: $o,SX1: $o] :
~ ( ~ SX0
| ~ SX1 ) )
= ( ^ [SX0: $o,SX1: $o] :
~ ( ~ SX0
| ~ SX1 ) ) )
= $false ),
inference(extcnf_equal_neg,[status(thm)],[7]) ).
thf(10,plain,
( ( ( ^ [SY4: $o] :
~ ( ~ sK1_SV1
| ~ SY4 ) )
= ( ^ [SY5: $o] :
~ ( ~ sK1_SV1
| ~ SY5 ) ) )
= $false ),
inference(extcnf_forall_neg,[status(esa)],[8]) ).
thf(11,plain,
( ( ! [SV2: $o] :
( ( ~ ( ~ sK1_SV1
| ~ SV2 ) )
= ( ~ ( ~ sK1_SV1
| ~ SV2 ) ) ) )
= $false ),
inference(extcnf_equal_neg,[status(thm)],[10]) ).
thf(12,plain,
( ( ( ^ [SY4: $o] :
~ ( ~ sK1_SV1
| ~ SY4 ) )
= ( ^ [SY5: $o] :
~ ( ~ sK1_SV1
| ~ SY5 ) ) )
= $false ),
inference(extcnf_equal_neg,[status(thm)],[10]) ).
thf(13,plain,
( ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) ) )
= $false ),
inference(extcnf_forall_neg,[status(esa)],[11]) ).
thf(14,plain,
( ( ~ ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 )
| ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
| ~ ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 )
| ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) ) )
= $false ),
inference(extcnf_equal_neg,[status(thm)],[13]) ).
thf(15,plain,
( ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) ) )
= $false ),
inference(extcnf_equal_neg,[status(thm)],[13]) ).
thf(16,plain,
( ( ~ ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 )
| ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[14]) ).
thf(17,plain,
( ( ~ ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 )
| ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[14]) ).
thf(18,plain,
( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 )
| ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[16]) ).
thf(19,plain,
( ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 )
| ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[17]) ).
thf(20,plain,
( ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true )
| ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[18]) ).
thf(21,plain,
( ( ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true )
| ( ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[19]) ).
thf(22,plain,
( ( ( ~ sK1_SV1
| ~ sK2_SV2 )
= $false )
| ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[20]) ).
thf(23,plain,
( ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $false )
| ( ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[21]) ).
thf(24,plain,
( ( ( ~ sK1_SV1 ) = $false )
| ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_or_neg,[status(thm)],[22]) ).
thf(25,plain,
( ( ( ~ sK2_SV2 ) = $false )
| ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_or_neg,[status(thm)],[22]) ).
thf(26,plain,
( ( ( ~ sK1_SV1
| ~ sK2_SV2 )
= $true )
| ( ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_not_neg,[status(thm)],[23]) ).
thf(27,plain,
( ( sK1_SV1 = $true )
| ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_not_neg,[status(thm)],[24]) ).
thf(28,plain,
( ( sK2_SV2 = $true )
| ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_not_neg,[status(thm)],[25]) ).
thf(29,plain,
( ( ( ~ sK1_SV1 ) = $true )
| ( ( ~ sK2_SV2 ) = $true )
| ( ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[26]) ).
thf(30,plain,
( ( ( ~ sK1_SV1
| ~ sK2_SV2 )
= $false )
| ( sK1_SV1 = $true ) ),
inference(extcnf_not_pos,[status(thm)],[27]) ).
thf(31,plain,
( ( ( ~ sK1_SV1
| ~ sK2_SV2 )
= $false )
| ( sK2_SV2 = $true ) ),
inference(extcnf_not_pos,[status(thm)],[28]) ).
thf(32,plain,
( ( sK1_SV1 = $false )
| ( ( ~ sK2_SV2 ) = $true )
| ( ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[29]) ).
thf(33,plain,
( ( ( ~ sK1_SV1 ) = $false )
| ( sK1_SV1 = $true ) ),
inference(extcnf_or_neg,[status(thm)],[30]) ).
thf(34,plain,
( ( ( ~ sK2_SV2 ) = $false )
| ( sK1_SV1 = $true ) ),
inference(extcnf_or_neg,[status(thm)],[30]) ).
thf(35,plain,
( ( ( ~ sK1_SV1 ) = $false )
| ( sK2_SV2 = $true ) ),
inference(extcnf_or_neg,[status(thm)],[31]) ).
thf(36,plain,
( ( ( ~ sK2_SV2 ) = $false )
| ( sK2_SV2 = $true ) ),
inference(extcnf_or_neg,[status(thm)],[31]) ).
thf(37,plain,
( ( sK2_SV2 = $false )
| ( sK1_SV1 = $false )
| ( ( ~ ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[32]) ).
thf(38,plain,
( ( sK1_SV1 = $true )
| ( sK1_SV1 = $true ) ),
inference(extcnf_not_neg,[status(thm)],[33]) ).
thf(39,plain,
( ( sK2_SV2 = $true )
| ( sK1_SV1 = $true ) ),
inference(extcnf_not_neg,[status(thm)],[34]) ).
thf(40,plain,
( ( sK1_SV1 = $true )
| ( sK2_SV2 = $true ) ),
inference(extcnf_not_neg,[status(thm)],[35]) ).
thf(41,plain,
( ( sK2_SV2 = $true )
| ( sK2_SV2 = $true ) ),
inference(extcnf_not_neg,[status(thm)],[36]) ).
thf(42,plain,
( ( ( ~ ( ~ sK1_SV1
| ~ sK2_SV2 ) )
= $false )
| ( sK1_SV1 = $false )
| ( sK2_SV2 = $false ) ),
inference(extcnf_not_pos,[status(thm)],[37]) ).
thf(43,plain,
( ( ( ~ sK1_SV1
| ~ sK2_SV2 )
= $true )
| ( sK1_SV1 = $false )
| ( sK2_SV2 = $false ) ),
inference(extcnf_not_neg,[status(thm)],[42]) ).
thf(44,plain,
( ( ( ~ sK1_SV1 ) = $true )
| ( ( ~ sK2_SV2 ) = $true )
| ( sK1_SV1 = $false )
| ( sK2_SV2 = $false ) ),
inference(extcnf_or_pos,[status(thm)],[43]) ).
thf(45,plain,
( ( sK1_SV1 = $false )
| ( ( ~ sK2_SV2 ) = $true )
| ( sK1_SV1 = $false )
| ( sK2_SV2 = $false ) ),
inference(extcnf_not_pos,[status(thm)],[44]) ).
thf(46,plain,
( ( sK2_SV2 = $false )
| ( sK1_SV1 = $false )
| ( sK1_SV1 = $false )
| ( sK2_SV2 = $false ) ),
inference(extcnf_not_pos,[status(thm)],[45]) ).
thf(47,plain,
$false = $true,
inference(fo_atp_e,[status(thm)],[9,46,41,40,39,38,15,12]) ).
thf(48,plain,
$false,
inference(solved_all_splits,[solved_all_splits(join,[])],[47]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SYO025^1 : TPTP v9.3.1. Released v3.7.0.
% 0.00/0.04 % Command : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.08/0.18 % Computer : n011.cluster.edu
% 0.08/0.18 % Model : x86_64 x86_64
% 0.08/0.18 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.18 % Memory : 8046.5625MB
% 0.08/0.18 % OS : Linux 6.8.0-71-generic
% 0.08/0.18 % CPULimit : 300
% 0.08/0.19 % WCLimit : 300
% 0.08/0.19 % DateTime : Tue Oct 6 17:31:06 UTC 2026
% 0.08/0.19 % CPUTime :
% 0.08/0.19 Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.08/0.23
% 0.08/0.23 No.of.Axioms: 0
% 0.08/0.23
% 0.08/0.23 Length.of.Defs: 0
% 0.08/0.23
% 0.08/0.23 Contains.Choice.Funs: false
% 0.08/0.23
% 0.08/0.23 ********************************
% 0.08/0.23 * All subproblems solved! *
% 0.08/0.23 ********************************
% 0.08/0.23 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:0,ps:0,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:25,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:47,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.08/0.23
% 0.08/0.23 %**** Beginning of derivation protocol ****
% 0.08/0.23 % SZS output start CNFRefutation
% See solution above
% 0.08/0.23
% 0.08/0.23 %**** End of derivation protocol ****
% 0.08/0.23 %**** no. of clauses in derivation: 48 ****
% 0.08/0.23 %**** clause counter: 47 ****
% 0.08/0.23
% 0.08/0.23 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:0,ps:0,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:25,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:47,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------