%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : SET589^5 : 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 : n008.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 2.75s 1.45s
% Output : Refutation 2.75s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 1
% Syntax : Number of formulae : 4 ( 1 unt; 0 typ; 0 def)
% Number of atoms : 1 ( 0 equ; 0 cnn)
% Maximal formula atoms : 1 ( 0 avg)
% Number of connectives : 53 ( 8 ~; 0 |; 9 &; 24 @)
% ( 0 <=>; 12 =>; 0 <=; 0 <~>)
% Maximal formula depth : 12 ( 9 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 12 ( 12 >; 0 *; 0 +; 0 <<)
% Number of symbols : 1 ( 0 usr; 1 con; 0-0 aty)
% Number of variables : 21 ( 0 ^; 21 !; 0 ?; 21 :)
% Comments :
%------------------------------------------------------------------------------
thf(a_type,type,
a: $tType ).
thf(1,conjecture,
! [A: a > $o,B: a > $o,C: a > $o,D: a > $o] :
( ( ! [E: a] :
( ( A @ E )
=> ( B @ E ) )
& ! [E: a] :
( ( C @ E )
=> ( D @ E ) ) )
=> ! [E: a] :
( ( ( A @ E )
& ~ ( D @ E ) )
=> ( ( B @ E )
& ~ ( C @ E ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cBOOL_PROP_48_pme) ).
thf(2,negated_conjecture,
~ ! [A: a > $o,B: a > $o,C: a > $o,D: a > $o] :
( ( ! [E: a] :
( ( A @ E )
=> ( B @ E ) )
& ! [E: a] :
( ( C @ E )
=> ( D @ E ) ) )
=> ! [E: a] :
( ( ( A @ E )
& ~ ( D @ E ) )
=> ( ( B @ E )
& ~ ( C @ E ) ) ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(3,plain,
~ ! [A: a > $o,B: a > $o,C: a > $o,D: a > $o] :
( ( ! [E: a] :
( ( A @ E )
=> ( B @ E ) )
& ! [E: a] :
( ( C @ E )
=> ( D @ E ) ) )
=> ! [E: a] :
( ( ( A @ E )
& ~ ( D @ E ) )
=> ( ( B @ E )
& ~ ( C @ E ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(11,plain,
$false,
inference(e,[status(thm)],[3]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET589^5 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.08 % 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
% 0.10/0.22 % Computer : n008.cluster.edu
% 0.10/0.22 % Model : x86_64 x86_64
% 0.10/0.22 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.22 % Memory : 8046.5625MB
% 0.10/0.22 % OS : Linux 6.8.0-71-generic
% 0.10/0.22 % CPULimit : 300
% 0.10/0.22 % WCLimit : 300
% 0.10/0.22 % DateTime : Tue Sep 29 13:38:54 UTC 2026
% 0.10/0.22 % CPUTime :
% 0.10/0.22 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
% 0.65/0.55 % [INFO] Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ...
% 1.02/0.64 % [INFO] Parsing done (97ms).
% 1.02/0.65 % [INFO] Running in sequential loop mode.
% 1.33/0.85 % [INFO] eprover registered as external prover.
% 1.33/0.86 % [INFO] Scanning for conjecture ...
% 1.58/0.90 % [INFO] Found a conjecture (or negated_conjecture) and 0 axioms. Running axiom selection ...
% 1.58/0.92 % [INFO] Axiom selection finished. Selected 0 axioms (removed 0 axioms).
% 1.58/0.93 % [INFO] Problem is higher-order (TPTP THF).
% 1.58/0.93 % [INFO] Type checking passed.
% 1.58/0.93 % [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 ...
% 2.75/1.44 % External prover 'e' found a proof!
% 2.75/1.44 % [INFO] Killing All external provers ...
% 2.75/1.44 % Time passed: 1125ms (effective reasoning time: 789ms)
% 2.75/1.44 % 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)>
% 2.75/1.45 % Axioms used in derivation (0):
% 2.75/1.45 % No. of inferences in proof: 4
% 2.75/1.45 % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 1125 ms resp. 789 ms w/o parsing
% 2.75/1.48 % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 2.75/1.48 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------