%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : LAT080-1 : TPTP v9.3.1. Released v2.6.0.
% 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 : n018.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 07:46:35 AM UTC 2026
% Result : Unsatisfiable 14.31s 5.73s
% Output : Refutation 14.31s
% Verified :
% SZS Type : Refutation
% Derivation depth : 2
% Number of leaves : 2
% Syntax : Number of formulae : 5 ( 5 unt; 0 typ; 0 def)
% Number of atoms : 5 ( 4 equ; 0 cnn)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 158 ( 2 ~; 0 |; 0 &; 156 @)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 4 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 5 ( 3 usr; 2 con; 0-2 aty)
% Number of variables : 14 ( 0 ^; 14 !; 0 ?; 14 :)
% Comments :
%------------------------------------------------------------------------------
thf(meet_decl,type,
meet: $i > $i > $i ).
thf(a_decl,type,
a: $i ).
thf(join_decl,type,
join: $i > $i > $i ).
thf(1,negated_conjecture,
( ( a @ ( a @ meet ) )
!= a ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_normal_axioms_1) ).
thf(3,plain,
( ( a @ ( a @ meet ) )
!= a ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[1]) ).
thf(2,axiom,
! [G: $i,F: $i,E: $i,D: $i,C: $i,B: $i,A: $i] :
( ( C @ ( B @ ( A @ join ) @ ( B @ meet ) @ ( B @ ( A @ meet ) @ join ) @ join ) @ ( B @ ( E @ ( B @ meet ) @ ( B @ ( D @ meet ) @ join ) @ join ) @ ( A @ join ) @ ( B @ ( B @ ( F @ join ) @ ( E @ ( B @ join ) @ ( D @ join ) @ meet ) @ meet ) @ ( B @ join ) @ ( G @ meet ) @ ( B @ ( B @ ( F @ join ) @ ( E @ ( B @ join ) @ ( D @ join ) @ meet ) @ meet ) @ ( B @ meet ) @ join ) @ meet ) @ ( B @ ( E @ ( B @ meet ) @ ( B @ ( D @ meet ) @ join ) @ join ) @ ( A @ meet ) @ join ) @ meet ) @ ( C @ ( B @ ( A @ join ) @ ( B @ meet ) @ ( B @ ( A @ meet ) @ join ) @ meet ) @ join ) )
= B ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',single_axiom) ).
thf(6,plain,
! [G: $i,F: $i,E: $i,D: $i,C: $i,B: $i,A: $i] :
( ( C @ ( B @ ( A @ join ) @ ( B @ meet ) @ ( B @ ( A @ meet ) @ join ) @ join ) @ ( B @ ( E @ ( B @ meet ) @ ( B @ ( D @ meet ) @ join ) @ join ) @ ( A @ join ) @ ( B @ ( B @ ( F @ join ) @ ( E @ ( B @ join ) @ ( D @ join ) @ meet ) @ meet ) @ ( B @ join ) @ ( G @ meet ) @ ( B @ ( B @ ( F @ join ) @ ( E @ ( B @ join ) @ ( D @ join ) @ meet ) @ meet ) @ ( B @ meet ) @ join ) @ meet ) @ ( B @ ( E @ ( B @ meet ) @ ( B @ ( D @ meet ) @ join ) @ join ) @ ( A @ meet ) @ join ) @ meet ) @ ( C @ ( B @ ( A @ join ) @ ( B @ meet ) @ ( B @ ( A @ meet ) @ join ) @ meet ) @ join ) )
= B ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(64,plain,
$false,
inference(e,[status(thm)],[3,6]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : LAT080-1 : TPTP v9.3.1. Released v2.6.0.
% 0.00/0.12 % 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
% 0.21/0.49 % Computer : n018.cluster.edu
% 0.21/0.49 % Model : x86_64 x86_64
% 0.21/0.49 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.21/0.49 % Memory : 8046.5625MB
% 0.21/0.49 % OS : Linux 6.8.0-71-generic
% 0.21/0.49 % CPULimit : 300
% 0.21/0.49 % WCLimit : 300
% 0.21/0.49 % DateTime : Fri Sep 25 20:04:51 UTC 2026
% 0.21/0.49 % CPUTime :
% 0.21/0.49 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
% 1.35/1.34 % [INFO] Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ...
% 1.83/1.60 % [INFO] Parsing done (253ms).
% 1.83/1.62 % [INFO] Running in sequential loop mode.
% 2.69/2.23 % [INFO] eprover registered as external prover.
% 2.69/2.24 % [INFO] Scanning for conjecture ...
% 2.85/2.36 % [INFO] Found a conjecture (or negated_conjecture) and 1 axioms. Running axiom selection ...
% 2.85/2.40 % [INFO] Axiom selection finished. Selected 1 axioms (removed 0 axioms).
% 3.00/2.42 % [INFO] Problem is propositional (TPTP CNF).
% 3.00/2.43 % [INFO] Type checking passed.
% 3.00/2.44 % [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 ...
% 14.31/5.72 % External prover 'e' found a proof!
% 14.31/5.73 % [INFO] Killing All external provers ...
% 14.31/5.73 % Time passed: 5027ms (effective reasoning time: 4098ms)
% 14.31/5.73 % Axioms used in derivation (1): single_axiom
% 14.31/5.73 % No. of inferences in proof: 5
% 14.31/5.73 % SZS status Unsatisfiable for /export/starexec/sandbox2/benchmark/theBenchmark.p : 5027 ms resp. 4098 ms w/o parsing
% 14.31/5.76 % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 14.31/5.76 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------