%------------------------------------------------------------------------------
% File : LEO-II---2.3.1
% Problem : SYN936+1 : TPTP v9.3.1. Released v3.1.0.
% 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 : n014.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 11:07:11 AM UTC 2026
% Result : Theorem 0.07s 0.26s
% Output : CNFRefutation 0.07s
% Verified :
% SZS Type : Refutation
% Derivation depth : 16
% Number of leaves : 1
% Syntax : Number of formulae : 44 ( 37 unt; 0 typ; 0 def)
% Number of atoms : 201 ( 48 equ; 0 cnn)
% Maximal formula atoms : 4 ( 4 avg)
% Number of connectives : 193 ( 80 ~; 32 |; 8 &; 52 @)
% ( 3 <=>; 18 =>; 0 <=; 0 <~>)
% Maximal formula depth : 5 ( 1 avg)
% Number of types : 2 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 7 ( 4 usr; 5 con; 0-2 aty)
% Number of variables : 32 ( 0 ^; 32 !; 0 ?; 32 :)
% Comments :
%------------------------------------------------------------------------------
thf(tp_c,type,
c: $o ).
thf(tp_p,type,
p: $i > $o ).
thf(tp_sK1_X,type,
sK1_X: $i ).
thf(tp_sK2_X,type,
sK2_X: $i ).
thf(1,conjecture,
( ! [X: $i] :
( c
=> ( p @ X ) )
<=> ( c
=> ! [X: $i] : ( p @ X ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this) ).
thf(2,negated_conjecture,
( ( ! [X: $i] :
( c
=> ( p @ X ) )
<=> ( c
=> ! [X: $i] : ( p @ X ) ) )
= $false ),
inference(negate_conjecture,[status(cth)],[1]) ).
thf(3,plain,
( ( ! [X: $i] :
( c
=> ( p @ X ) )
<=> ( c
=> ! [X: $i] : ( p @ X ) ) )
= $false ),
inference(unfold_def,[status(thm)],[2]) ).
thf(4,plain,
( ( ! [X: $i] :
( c
=> ( p @ X ) )
=> ( c
=> ! [X: $i] : ( p @ X ) ) )
= $false ),
inference(split_conjecture,[split_conjecture(split,[])],[3]) ).
thf(5,plain,
( ( ( c
=> ! [X: $i] : ( p @ X ) )
=> ! [X: $i] :
( c
=> ( p @ X ) ) )
= $false ),
inference(split_conjecture,[split_conjecture(split,[])],[3]) ).
thf(6,plain,
( ( ~ ( ! [X: $i] :
( c
=> ( p @ X ) )
=> ( c
=> ! [X: $i] : ( p @ X ) ) ) )
= $true ),
inference(polarity_switch,[status(thm)],[4]) ).
thf(7,plain,
( ( ~ ( ( c
=> ! [X: $i] : ( p @ X ) )
=> ! [X: $i] :
( c
=> ( p @ X ) ) ) )
= $true ),
inference(polarity_switch,[status(thm)],[5]) ).
thf(8,plain,
( ( ( ~ c
| ! [X: $i] : ( p @ X ) )
& c
& ~ ( p @ sK1_X ) )
= $true ),
inference(extcnf_combined,[status(esa)],[6]) ).
thf(9,plain,
( ( ( ~ c
| ! [X: $i] : ( p @ X ) )
& c
& ~ ( p @ sK2_X ) )
= $true ),
inference(extcnf_combined,[status(esa)],[7]) ).
thf(10,plain,
( ( ( ~ c
| ! [X: $i] : ( p @ X ) )
& c
& ~ ( p @ sK1_X ) )
= $true ),
inference(copy,[status(thm)],[8]) ).
thf(11,plain,
( ( ~ ( ~ ( ~ c
| ! [SX0: $i] : ( p @ SX0 ) )
| ~ ~ ( ~ c
| ~ ~ ( p @ sK1_X ) ) ) )
= $true ),
inference(unfold_def,[status(thm)],[10]) ).
thf(12,plain,
( ( ~ ( ~ c
| ! [SX0: $i] : ( p @ SX0 ) )
| ~ ~ ( ~ c
| ~ ~ ( p @ sK1_X ) ) )
= $false ),
inference(extcnf_not_pos,[status(thm)],[11]) ).
thf(13,plain,
( ( ~ ( ~ c
| ! [SX0: $i] : ( p @ SX0 ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[12]) ).
thf(14,plain,
( ( ~ ~ ( ~ c
| ~ ~ ( p @ sK1_X ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[12]) ).
thf(15,plain,
( ( ~ c
| ! [SX0: $i] : ( p @ SX0 ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[13]) ).
thf(16,plain,
( ( ~ ( ~ c
| ~ ~ ( p @ sK1_X ) ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[14]) ).
thf(17,plain,
( ( ( ~ c ) = $true )
| ( ( ! [SX0: $i] : ( p @ SX0 ) )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[15]) ).
thf(18,plain,
( ( ~ c
| ~ ~ ( p @ sK1_X ) )
= $false ),
inference(extcnf_not_pos,[status(thm)],[16]) ).
thf(19,plain,
( ( c = $false )
| ( ( ! [SX0: $i] : ( p @ SX0 ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[17]) ).
thf(20,plain,
( ( ~ c ) = $false ),
inference(extcnf_or_neg,[status(thm)],[18]) ).
thf(21,plain,
( ( ~ ~ ( p @ sK1_X ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[18]) ).
thf(22,plain,
! [SV1: $i] :
( ( ( p @ SV1 )
= $true )
| ( c = $false ) ),
inference(extcnf_forall_pos,[status(thm)],[19]) ).
thf(23,plain,
c = $true,
inference(extcnf_not_neg,[status(thm)],[20]) ).
thf(24,plain,
( ( ~ ( p @ sK1_X ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[21]) ).
thf(25,plain,
( ( p @ sK1_X )
= $false ),
inference(extcnf_not_pos,[status(thm)],[24]) ).
thf(26,plain,
$false = $true,
inference(fo_atp_e,[status(thm)],[22,25,23]) ).
thf(27,plain,
( ( ( ~ c
| ! [X: $i] : ( p @ X ) )
& c
& ~ ( p @ sK2_X ) )
= $true ),
inference(copy,[status(thm)],[9]) ).
thf(28,plain,
( ( ~ ( ~ ( ~ c
| ! [SX0: $i] : ( p @ SX0 ) )
| ~ ~ ( ~ c
| ~ ~ ( p @ sK2_X ) ) ) )
= $true ),
inference(unfold_def,[status(thm)],[27]) ).
thf(29,plain,
( ( ~ ( ~ c
| ! [SX0: $i] : ( p @ SX0 ) )
| ~ ~ ( ~ c
| ~ ~ ( p @ sK2_X ) ) )
= $false ),
inference(extcnf_not_pos,[status(thm)],[28]) ).
thf(30,plain,
( ( ~ ( ~ c
| ! [SX0: $i] : ( p @ SX0 ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[29]) ).
thf(31,plain,
( ( ~ ~ ( ~ c
| ~ ~ ( p @ sK2_X ) ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[29]) ).
thf(32,plain,
( ( ~ c
| ! [SX0: $i] : ( p @ SX0 ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[30]) ).
thf(33,plain,
( ( ~ ( ~ c
| ~ ~ ( p @ sK2_X ) ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[31]) ).
thf(34,plain,
( ( ( ~ c ) = $true )
| ( ( ! [SX0: $i] : ( p @ SX0 ) )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[32]) ).
thf(35,plain,
( ( ~ c
| ~ ~ ( p @ sK2_X ) )
= $false ),
inference(extcnf_not_pos,[status(thm)],[33]) ).
thf(36,plain,
( ( c = $false )
| ( ( ! [SX0: $i] : ( p @ SX0 ) )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[34]) ).
thf(37,plain,
( ( ~ c ) = $false ),
inference(extcnf_or_neg,[status(thm)],[35]) ).
thf(38,plain,
( ( ~ ~ ( p @ sK2_X ) )
= $false ),
inference(extcnf_or_neg,[status(thm)],[35]) ).
thf(39,plain,
! [SV2: $i] :
( ( ( p @ SV2 )
= $true )
| ( c = $false ) ),
inference(extcnf_forall_pos,[status(thm)],[36]) ).
thf(40,plain,
c = $true,
inference(extcnf_not_neg,[status(thm)],[37]) ).
thf(41,plain,
( ( ~ ( p @ sK2_X ) )
= $true ),
inference(extcnf_not_neg,[status(thm)],[38]) ).
thf(42,plain,
( ( p @ sK2_X )
= $false ),
inference(extcnf_not_pos,[status(thm)],[41]) ).
thf(43,plain,
$false = $true,
inference(fo_atp_e,[status(thm)],[39,42,40]) ).
thf(44,plain,
$false,
inference(solved_all_splits,[solved_all_splits(join,[])],[43,26]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SYN936+1 : TPTP v9.3.1. Released v3.1.0.
% 0.00/0.05 % Command : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.07/0.20 % Computer : n014.cluster.edu
% 0.07/0.20 % Model : x86_64 x86_64
% 0.07/0.20 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.20 % Memory : 8046.5625MB
% 0.07/0.20 % OS : Linux 6.8.0-71-generic
% 0.07/0.20 % CPULimit : 300
% 0.07/0.20 % WCLimit : 300
% 0.07/0.20 % DateTime : Tue Oct 6 17:29:26 UTC 2026
% 0.07/0.21 % CPUTime :
% 0.07/0.21 Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.07/0.26
% 0.07/0.26 No.of.Axioms: 0
% 0.07/0.26
% 0.07/0.26 Length.of.Defs: 0
% 0.07/0.26
% 0.07/0.26 Contains.Choice.Funs: false
% 0.07/0.26
% 0.07/0.26 ********************************
% 0.07/0.26 * All subproblems solved! *
% 0.07/0.26 ********************************
% 0.07/0.26 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:0,axioms:0,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:43,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.07/0.26
% 0.07/0.26 %**** Beginning of derivation protocol ****
% 0.07/0.26 % SZS output start CNFRefutation
% See solution above
% 0.07/0.27
% 0.07/0.27 %**** End of derivation protocol ****
% 0.07/0.27 %**** no. of clauses in derivation: 44 ****
% 0.07/0.27 %**** clause counter: 43 ****
% 0.07/0.27
% 0.07/0.27 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:0,axioms:0,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:43,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------