%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : SET628^5 : 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 : n005.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 08:23:04 AM UTC 2026
% Result : Theorem 3.61s 2.23s
% Output : Refutation 3.61s
% Verified :
% SZS Type : Refutation
% Derivation depth : 11
% Number of leaves : 3
% Syntax : Number of formulae : 15 ( 8 unt; 0 typ; 2 def)
% Number of atoms : 52 ( 20 equ; 0 cnn)
% Maximal formula atoms : 3 ( 3 avg)
% Number of connectives : 49 ( 18 ~; 8 |; 2 &; 21 @)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 4 ( 3 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 4 ( 4 >; 0 *; 0 +; 0 <<)
% Number of symbols : 6 ( 3 usr; 4 con; 0-2 aty)
% Number of variables : 21 ( 9 ^; 3 !; 7 ?; 21 :)
% ( 0 !>; 0 ?*; 0 @-; 2 @+)
% Comments :
%------------------------------------------------------------------------------
thf(a_type,type,
a: $tType ).
thf(sk1_decl,type,
sk1: a > $o ).
thf(sk2_decl,type,
sk2: a ).
thf(sk3_decl,type,
sk3: a ).
thf(sk1_def,definition,
( sk1
= ( @+[A: a > $o] :
( ( ? [B: a] : ( A @ B ) )
!= ( A
!= ( ^ [B: a] : $false ) ) ) ) ) ).
thf(sk2_def,definition,
( sk2
= ( @+[A: a] : ( sk1 @ A ) ) ) ).
thf(1,conjecture,
! [A: a > $o] :
( ( ? [B: a] :
( ( A @ B )
& ( A @ B ) ) )
= ( A
!= ( ^ [B: a] : $false ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cBOOL_PROP_110_pme) ).
thf(2,negated_conjecture,
~ ! [A: a > $o] :
( ( ? [B: a] :
( ( A @ B )
& ( A @ B ) ) )
= ( A
!= ( ^ [B: a] : $false ) ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(3,plain,
~ ! [A: a > $o] :
( ( ? [B: a] : ( A @ B ) )
= ( A
!= ( ^ [B: a] : $false ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(4,plain,
( ( ? [A: a] : ( sk1 @ A ) )
!= ( sk1
!= ( ^ [A: a] : $false ) ) ),
inference(cnf,[status(esa)],[3]) ).
thf(5,plain,
( ( sk1
!= ( ^ [A: a] : $false ) )
!= ( ? [A: a] : ( sk1 @ A ) ) ),
inference(lifteq,[status(thm)],[4]) ).
thf(7,plain,
( ( sk1
!= ( ^ [A: a] : $false ) )
| ? [A: a] : ( sk1 @ A ) ),
inference(bool_ext,[status(thm)],[5]) ).
thf(10,plain,
( ( sk1
!= ( ^ [A: a] : $false ) )
| ( sk1 @ sk2 ) ),
inference(cnf,[status(esa)],[7]) ).
thf(11,plain,
( ( sk1
!= ( ^ [A: a] : $false ) )
| ( sk1 @ sk2 ) ),
inference(lifteq,[status(thm)],[10]) ).
thf(12,plain,
( ( sk1 @ sk3 )
| ( sk1 @ sk2 ) ),
inference(func_ext,[status(esa)],[11]) ).
thf(13,plain,
( ( sk1 @ sk2 )
| ( ( sk1 @ sk3 )
!= ( sk1 @ sk2 ) )
| ~ $true ),
inference(eqfactor_ordered,[status(thm)],[12]) ).
thf(14,plain,
( ( sk1 @ sk2 )
| ( ( sk1 @ sk3 )
!= ( sk1 @ sk2 ) ) ),
inference(simp,[status(thm)],[13]) ).
thf(15,plain,
( ( sk1 @ sk2 )
| ( sk3 != sk2 ) ),
inference(simp,[status(thm)],[13]) ).
thf(42,plain,
$false,
inference(e,[status(thm)],[5,14,12,3,11,15]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET628^5 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.07 % 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
% 0.10/0.20 % Computer : n005.cluster.edu
% 0.10/0.20 % Model : x86_64 x86_64
% 0.10/0.20 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.20 % Memory : 8046.5625MB
% 0.10/0.20 % OS : Linux 6.8.0-71-generic
% 0.10/0.20 % CPULimit : 300
% 0.10/0.20 % WCLimit : 300
% 0.10/0.20 % DateTime : Tue Sep 29 13:39:46 UTC 2026
% 0.10/0.21 % CPUTime :
% 0.10/0.21 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
% 0.86/0.79 % [INFO] Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ...
% 1.16/0.97 % [INFO] Parsing done (172ms).
% 1.16/0.98 % [INFO] Running in sequential loop mode.
% 1.72/1.38 % [INFO] eprover registered as external prover.
% 1.72/1.39 % [INFO] Scanning for conjecture ...
% 1.91/1.47 % [INFO] Found a conjecture (or negated_conjecture) and 0 axioms. Running axiom selection ...
% 2.05/1.50 % [INFO] Axiom selection finished. Selected 0 axioms (removed 0 axioms).
% 2.05/1.51 % [INFO] Problem is higher-order (TPTP THF).
% 2.05/1.51 % [INFO] Type checking passed.
% 2.05/1.51 % [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 ...
% 3.61/2.23 % External prover 'e' found a proof!
% 3.61/2.23 % [INFO] Killing All external provers ...
% 3.61/2.23 % Time passed: 1880ms (effective reasoning time: 1243ms)
% 3.61/2.23 % 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)>
% 3.61/2.23 % Axioms used in derivation (0):
% 3.61/2.23 % No. of inferences in proof: 13
% 3.61/2.23 % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 1880 ms resp. 1243 ms w/o parsing
% 3.61/2.27 % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 3.61/2.27 % [INFO] Killing All external provers ...
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