%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : SEU501_8 : TPTP v9.3.1. Released v8.0.0.
% Transfm : none
% Format : tptp:raw
% Command : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% Computer : n006.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 : Sun Sep 27 08:39:08 AM UTC 2026
% Result : Theorem 3.29s 2.22s
% Output : Refutation 3.29s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 2
% Syntax : Number of formulae : 6 ( 3 unt; 0 typ; 0 def)
% Number of atoms : 13 ( 2 equ; 0 cnn)
% Maximal formula atoms : 2 ( 2 avg)
% Number of connectives : 20 ( 4 ~; 0 |; 0 &; 10 @)
% ( 0 <=>; 6 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 4 avg)
% Number of types : 2 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 5 ( 3 usr; 3 con; 0-2 aty)
% Number of variables : 8 ( 0 ^; 8 !; 0 ?; 8 :)
% Comments :
%------------------------------------------------------------------------------
thf(in_decl,type,
in: $i > $i > $o ).
thf(emptyset_decl,type,
emptyset: $i ).
thf(emptysetAx_decl,type,
emptysetAx: $o ).
thf(1,conjecture,
( emptysetAx
=> ! [A: $i] :
( ( emptyset @ ( A @ in ) )
=> ! [B: $o] : B ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',emptysetE) ).
thf(2,negated_conjecture,
~ ( emptysetAx
=> ! [A: $i] :
( ( emptyset @ ( A @ in ) )
=> ! [B: $o] : B ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(4,plain,
~ ( emptysetAx
=> ! [A: $i] :
( ( emptyset @ ( A @ in ) )
=> ! [B: $o] : B ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(3,axiom,
( emptysetAx
= ( ! [A: $i] :
~ ( emptyset @ ( A @ in ) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',emptysetAx) ).
thf(10,plain,
( emptysetAx
= ( ! [A: $i] :
~ ( emptyset @ ( A @ in ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).
thf(12,plain,
$false,
inference(e,[status(thm)],[4,10]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SEU501_8 : TPTP v9.3.1. Released v8.0.0.
% 0.00/0.09 % Command : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% 0.14/0.40 % Computer : n006.cluster.edu
% 0.14/0.40 % Model : x86_64 x86_64
% 0.14/0.40 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.40 % Memory : 8046.5625MB
% 0.14/0.40 % OS : Linux 6.8.0-71-generic
% 0.14/0.40 % CPULimit : 300
% 0.14/0.40 % WCLimit : 300
% 0.14/0.40 % DateTime : Sat Sep 26 10:06:41 UTC 2026
% 0.14/0.40 % CPUTime :
% 0.14/0.40 Running java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% 0.89/0.99 % [INFO] Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ...
% 1.29/1.17 % [INFO] Parsing done (177ms).
% 1.29/1.19 % [INFO] Running in sequential loop mode.
% 1.82/1.59 % [INFO] eprover registered as external prover.
% 2.01/1.60 % [INFO] Scanning for conjecture ...
% 2.01/1.67 % [INFO] Definitions in FOF are currently treated as axioms.
% 2.19/1.70 % [INFO] Found a conjecture (or negated_conjecture) and 1 axioms. Running axiom selection ...
% 2.19/1.73 % [INFO] Axiom selection finished. Selected 1 axioms (removed 0 axioms).
% 2.19/1.74 % [INFO] Definitions in FOF are currently treated as axioms.
% 2.19/1.74 % [INFO] Problem is typed first-order (TPTP TFF).
% 2.19/1.75 % [INFO] Type checking passed.
% 2.19/1.75 % [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 ...
% 3.29/2.21 % External prover 'e' found a proof!
% 3.29/2.21 % [INFO] Killing All external provers ...
% 3.29/2.21 % Time passed: 1668ms (effective reasoning time: 1021ms)
% 3.29/2.21 % 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)>
% 3.29/2.21 % Axioms used in derivation (1): emptysetAx
% 3.29/2.21 % No. of inferences in proof: 6
% 3.29/2.22 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : 1668 ms resp. 1021 ms w/o parsing
% 3.29/2.24 % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 3.29/2.24 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------