%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : SET591^5 : TPTP v9.3.1. Released v4.0.0.
% Transfm : none
% Format : tptp:raw
% Command : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% Computer : n002.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 Sep 30 08:22:58 AM UTC 2026
% Result : Theorem 4.51s 2.41s
% Output : Refutation 4.51s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 3
% Syntax : Number of formulae : 13 ( 11 unt; 0 typ; 2 def)
% Number of atoms : 36 ( 11 equ; 0 cnn)
% Maximal formula atoms : 5 ( 2 avg)
% Number of connectives : 67 ( 20 ~; 3 |; 8 &; 25 @)
% ( 0 <=>; 11 =>; 0 <=; 0 <~>)
% Maximal formula depth : 10 ( 5 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 11 ( 11 >; 0 *; 0 +; 0 <<)
% Number of symbols : 4 ( 2 usr; 1 con; 0-2 aty)
% Number of variables : 30 ( 10 ^; 16 !; 2 ?; 30 :)
% ( 0 !>; 0 ?*; 0 @-; 2 @+)
% Comments :
%------------------------------------------------------------------------------
thf(a_type,type,
a: $tType ).
thf(sk1_decl,type,
sk1: a > $o ).
thf(sk2_decl,type,
sk2: a > $o ).
thf(sk1_def,definition,
( sk1
= ( @+[A: a > $o] :
~ ( ? [B: a > $o] :
! [C: a] :
( ( A @ C )
=> ( ( B @ C )
& ~ ( A @ C ) ) )
=> ( A
= ( ^ [B: a] : $false ) ) ) ) ) ).
thf(sk2_def,definition,
( sk2
= ( @+[A: a > $o] :
! [B: a] :
( ( sk1 @ B )
=> ( ( A @ B )
& ~ ( sk1 @ B ) ) ) ) ) ).
thf(1,conjecture,
! [A: a > $o,B: a > $o] :
( ! [C: a] :
( ( A @ C )
=> ( ( B @ C )
& ~ ( A @ C ) ) )
=> ( A
= ( ^ [C: a] : $false ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cBOOL_PROP_50_pme) ).
thf(2,negated_conjecture,
~ ! [A: a > $o,B: a > $o] :
( ! [C: a] :
( ( A @ C )
=> ( ( B @ C )
& ~ ( A @ C ) ) )
=> ( A
= ( ^ [C: a] : $false ) ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(3,plain,
~ ! [A: a > $o,B: a > $o] :
( ! [C: a] :
( ( A @ C )
=> ( ( B @ C )
& ~ ( A @ C ) ) )
=> ( A
= ( ^ [C: a] : $false ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(4,plain,
~ ! [A: a > $o] :
( ? [B: a > $o] :
! [C: a] :
( ( A @ C )
=> ( ( B @ C )
& ~ ( A @ C ) ) )
=> ( A
= ( ^ [B: a] : $false ) ) ),
inference(miniscope,[status(thm)],[3]) ).
thf(5,plain,
! [A: a] :
( ( ~ ( sk1 @ A )
| ( sk2 @ A ) )
& ( ~ ( sk1 @ A )
| ~ ( sk1 @ A ) )
& ( sk1
!= ( ^ [B: a] : $false ) ) ),
inference(cnf,[status(esa)],[4]) ).
thf(8,plain,
( sk1
!= ( ^ [A: a] : $false ) ),
inference(cnfConj,[status(thm)],[5]) ).
thf(10,plain,
( sk1
!= ( ^ [A: a] : $false ) ),
inference(lifteq,[status(thm)],[8]) ).
thf(7,plain,
! [A: a] :
( ~ ( sk1 @ A )
| ~ ( sk1 @ A ) ),
inference(cnfConj,[status(thm)],[5]) ).
thf(9,plain,
! [A: a] :
~ ( sk1 @ A ),
inference(simp,[status(thm)],[7]) ).
thf(12,plain,
( ( ^ [A: a] : $false )
!= ( ^ [A: a] : $false ) ),
inference(rewrite,[status(thm)],[10,9]) ).
thf(13,plain,
$false,
inference(simp,[status(thm)],[12]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.04 % Problem : SET591^5 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.10 % Command : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% 0.25/0.28 % Computer : n002.cluster.edu
% 0.25/0.28 % Model : x86_64 x86_64
% 0.25/0.28 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.25/0.28 % Memory : 8046.5625MB
% 0.25/0.28 % OS : Linux 6.8.0-71-generic
% 0.25/0.28 % CPULimit : 300
% 0.25/0.28 % WCLimit : 300
% 0.25/0.28 % DateTime : Tue Sep 29 13:41:07 UTC 2026
% 0.25/0.28 % CPUTime :
% 0.25/0.28 Running java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% 1.18/0.96 % [INFO] Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ...
% 1.70/1.16 % [INFO] Parsing done (196ms).
% 1.70/1.18 % [INFO] Running in sequential loop mode.
% 2.40/1.63 % [INFO] eprover registered as external prover.
% 2.40/1.64 % [INFO] Scanning for conjecture ...
% 2.65/1.74 % [INFO] Found a conjecture (or negated_conjecture) and 0 axioms. Running axiom selection ...
% 2.65/1.78 % [INFO] Axiom selection finished. Selected 0 axioms (removed 0 axioms).
% 2.65/1.78 % [INFO] Problem is higher-order (TPTP THF).
% 2.65/1.78 % [INFO] Type checking passed.
% 2.65/1.79 % [CONFIG] Using configuration: timeout(300) with strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>. Searching for refutation ...
% 4.51/2.41 % [INFO] Killing All external provers ...
% 4.51/2.41 % Time passed: 1948ms (effective reasoning time: 1223ms)
% 4.51/2.41 % Solved by strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>
% 4.51/2.41 % Axioms used in derivation (0):
% 4.51/2.41 % No. of inferences in proof: 11
% 4.51/2.41 % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 1948 ms resp. 1223 ms w/o parsing
% 4.51/2.46 % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 4.51/2.46 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------