%------------------------------------------------------------------------------
% File : LEO-II---2.3.1
% Problem : NUM769^1 : 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 : n020.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 10:35:11 AM UTC 2026
% Result : Theorem 0.07s 0.21s
% Output : CNFRefutation 0.07s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 4
% Syntax : Number of formulae : 27 ( 21 unt; 0 typ; 0 def)
% Number of atoms : 95 ( 26 equ; 0 cnn)
% Maximal formula atoms : 2 ( 3 avg)
% Number of connectives : 164 ( 10 ~; 10 |; 0 &; 138 @)
% ( 0 <=>; 6 =>; 0 <=; 0 <~>)
% Maximal formula depth : 9 ( 2 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 9 ( 6 usr; 4 con; 0-2 aty)
% Number of variables : 32 ( 0 ^; 32 !; 0 ?; 32 :)
% Comments :
%------------------------------------------------------------------------------
thf(tp_frac,type,
frac: $tType ).
thf(tp_eq,type,
eq: frac > frac > $o ).
thf(tp_mf,type,
mf: frac > frac > frac ).
thf(tp_moref,type,
moref: frac > frac > $o ).
thf(tp_pf,type,
pf: frac > frac > frac ).
thf(tp_x,type,
x: frac ).
thf(tp_y,type,
y: frac ).
thf(1,axiom,
! [Xx: frac,Xy: frac] :
( ( moref @ Xx @ Xy )
=> ( eq @ ( pf @ Xy @ ( mf @ Xx @ Xy ) ) @ Xx ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz67c) ).
thf(2,axiom,
! [Xx: frac,Xy: frac] :
( ( eq @ Xx @ Xy )
=> ( eq @ Xy @ Xx ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz38) ).
thf(3,axiom,
moref @ x @ y,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',m) ).
thf(4,conjecture,
eq @ x @ ( pf @ y @ ( mf @ x @ y ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz67d) ).
thf(5,negated_conjecture,
( ( eq @ x @ ( pf @ y @ ( mf @ x @ y ) ) )
= $false ),
inference(negate_conjecture,[status(cth)],[4]) ).
thf(6,plain,
( ( eq @ x @ ( pf @ y @ ( mf @ x @ y ) ) )
= $false ),
inference(unfold_def,[status(thm)],[5]) ).
thf(7,plain,
( ( ! [Xx: frac,Xy: frac] :
( ( moref @ Xx @ Xy )
=> ( eq @ ( pf @ Xy @ ( mf @ Xx @ Xy ) ) @ Xx ) ) )
= $true ),
inference(unfold_def,[status(thm)],[1]) ).
thf(8,plain,
( ( ! [Xx: frac,Xy: frac] :
( ( eq @ Xx @ Xy )
=> ( eq @ Xy @ Xx ) ) )
= $true ),
inference(unfold_def,[status(thm)],[2]) ).
thf(9,plain,
( ( moref @ x @ y )
= $true ),
inference(unfold_def,[status(thm)],[3]) ).
thf(10,plain,
( ( ~ ( eq @ x @ ( pf @ y @ ( mf @ x @ y ) ) ) )
= $true ),
inference(polarity_switch,[status(thm)],[6]) ).
thf(11,plain,
( ( moref @ x @ y )
= $true ),
inference(copy,[status(thm)],[9]) ).
thf(12,plain,
( ( ! [Xx: frac,Xy: frac] :
( ( eq @ Xx @ Xy )
=> ( eq @ Xy @ Xx ) ) )
= $true ),
inference(copy,[status(thm)],[8]) ).
thf(13,plain,
( ( ! [Xx: frac,Xy: frac] :
( ( moref @ Xx @ Xy )
=> ( eq @ ( pf @ Xy @ ( mf @ Xx @ Xy ) ) @ Xx ) ) )
= $true ),
inference(copy,[status(thm)],[7]) ).
thf(14,plain,
( ( ~ ( eq @ x @ ( pf @ y @ ( mf @ x @ y ) ) ) )
= $true ),
inference(copy,[status(thm)],[10]) ).
thf(15,plain,
( ( ! [SX0: frac,SX1: frac] :
( ~ ( moref @ SX0 @ SX1 )
| ( eq @ ( pf @ SX1 @ ( mf @ SX0 @ SX1 ) ) @ SX0 ) ) )
= $true ),
inference(unfold_def,[status(thm)],[13]) ).
thf(16,plain,
( ( ! [SX0: frac,SX1: frac] :
( ~ ( eq @ SX0 @ SX1 )
| ( eq @ SX1 @ SX0 ) ) )
= $true ),
inference(unfold_def,[status(thm)],[12]) ).
thf(17,plain,
( ( eq @ x @ ( pf @ y @ ( mf @ x @ y ) ) )
= $false ),
inference(extcnf_not_pos,[status(thm)],[14]) ).
thf(18,plain,
! [SV1: frac] :
( ( ! [SY4: frac] :
( ~ ( moref @ SV1 @ SY4 )
| ( eq @ ( pf @ SY4 @ ( mf @ SV1 @ SY4 ) ) @ SV1 ) ) )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[15]) ).
thf(19,plain,
! [SV2: frac] :
( ( ! [SY5: frac] :
( ~ ( eq @ SV2 @ SY5 )
| ( eq @ SY5 @ SV2 ) ) )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[16]) ).
thf(20,plain,
! [SV3: frac,SV1: frac] :
( ( ~ ( moref @ SV1 @ SV3 )
| ( eq @ ( pf @ SV3 @ ( mf @ SV1 @ SV3 ) ) @ SV1 ) )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[18]) ).
thf(21,plain,
! [SV4: frac,SV2: frac] :
( ( ~ ( eq @ SV2 @ SV4 )
| ( eq @ SV4 @ SV2 ) )
= $true ),
inference(extcnf_forall_pos,[status(thm)],[19]) ).
thf(22,plain,
! [SV3: frac,SV1: frac] :
( ( ( ~ ( moref @ SV1 @ SV3 ) )
= $true )
| ( ( eq @ ( pf @ SV3 @ ( mf @ SV1 @ SV3 ) ) @ SV1 )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[20]) ).
thf(23,plain,
! [SV4: frac,SV2: frac] :
( ( ( ~ ( eq @ SV2 @ SV4 ) )
= $true )
| ( ( eq @ SV4 @ SV2 )
= $true ) ),
inference(extcnf_or_pos,[status(thm)],[21]) ).
thf(24,plain,
! [SV3: frac,SV1: frac] :
( ( ( moref @ SV1 @ SV3 )
= $false )
| ( ( eq @ ( pf @ SV3 @ ( mf @ SV1 @ SV3 ) ) @ SV1 )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[22]) ).
thf(25,plain,
! [SV4: frac,SV2: frac] :
( ( ( eq @ SV2 @ SV4 )
= $false )
| ( ( eq @ SV4 @ SV2 )
= $true ) ),
inference(extcnf_not_pos,[status(thm)],[23]) ).
thf(26,plain,
$false = $true,
inference(fo_atp_e,[status(thm)],[11,25,24,17]) ).
thf(27,plain,
$false,
inference(solved_all_splits,[solved_all_splits(join,[])],[26]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : NUM769^1 : 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
% 0.07/0.18 % Computer : n020.cluster.edu
% 0.07/0.18 % Model : x86_64 x86_64
% 0.07/0.18 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.18 % Memory : 8046.5625MB
% 0.07/0.18 % OS : Linux 6.8.0-71-generic
% 0.07/0.18 % CPULimit : 300
% 0.07/0.18 % WCLimit : 300
% 0.07/0.18 % DateTime : Tue Oct 6 13:39:06 UTC 2026
% 0.07/0.18 % CPUTime :
% 0.07/0.18 Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.07/0.21
% 0.07/0.21 No.of.Axioms: 3
% 0.07/0.21
% 0.07/0.21 Length.of.Defs: 0
% 0.07/0.21
% 0.07/0.21 Contains.Choice.Funs: false
% 0.07/0.21
% 0.07/0.21 ********************************
% 0.07/0.21 * All subproblems solved! *
% 0.07/0.21 ********************************
% 0.07/0.21 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:0,axioms:3,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:25,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:26,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.07/0.21
% 0.07/0.21 %**** Beginning of derivation protocol ****
% 0.07/0.21 % SZS output start CNFRefutation
% See solution above
% 0.07/0.21
% 0.07/0.21 %**** End of derivation protocol ****
% 0.07/0.21 %**** no. of clauses in derivation: 27 ****
% 0.07/0.21 %**** clause counter: 26 ****
% 0.07/0.21
% 0.07/0.21 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:0,axioms:3,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:25,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:26,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------