%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : SEU932^5 : TPTP v9.3.1. Released v4.0.0.
% 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 : n004.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 08:29:36 AM UTC 2026
% Result : Theorem 2.81s 1.88s
% Output : Refutation 3.18s
% 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 : 16 ( 15 equ; 0 cnn)
% Maximal formula atoms : 5 ( 4 avg)
% Number of connectives : 35 ( 2 ~; 0 |; 6 &; 21 @)
% ( 0 <=>; 6 =>; 0 <=; 0 <~>)
% Maximal formula depth : 10 ( 8 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 6 ( 6 >; 0 *; 0 +; 0 <<)
% Number of symbols : 2 ( 0 usr; 1 con; 0-2 aty)
% Number of variables : 21 ( 6 ^; 6 !; 9 ?; 21 :)
% Comments :
%------------------------------------------------------------------------------
thf(1,conjecture,
! [A: $i > $i] :
( ? [B: $i > $i] :
( ( ( ^ [C: $i] : ( A @ ( B @ C ) ) )
= ( ^ [C: $i] : ( B @ ( A @ C ) ) ) )
& ? [C: $i] :
( ( ( B @ C )
= C )
& ! [D: $i] :
( ( ( B @ D )
= D )
=> ( D = C ) ) ) )
=> ? [B: $i] :
( ( A @ B )
= B ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',cTHM141_pme) ).
thf(2,negated_conjecture,
~ ! [A: $i > $i] :
( ? [B: $i > $i] :
( ( ( ^ [C: $i] : ( A @ ( B @ C ) ) )
= ( ^ [C: $i] : ( B @ ( A @ C ) ) ) )
& ? [C: $i] :
( ( ( B @ C )
= C )
& ! [D: $i] :
( ( ( B @ D )
= D )
=> ( D = C ) ) ) )
=> ? [B: $i] :
( ( A @ B )
= B ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(3,plain,
~ ! [A: $i > $i] :
( ? [B: $i > $i] :
( ( ( ^ [C: $i] : ( A @ ( B @ C ) ) )
= ( ^ [C: $i] : ( B @ ( A @ C ) ) ) )
& ? [C: $i] :
( ( ( B @ C )
= C )
& ! [D: $i] :
( ( ( B @ D )
= D )
=> ( D = C ) ) ) )
=> ? [B: $i] :
( ( A @ B )
= B ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(21,plain,
$false,
inference(e,[status(thm)],[3]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SEU932^5 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.07 % 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
% 0.11/0.19 % Computer : n004.cluster.edu
% 0.11/0.19 % Model : x86_64 x86_64
% 0.11/0.19 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.19 % Memory : 8046.5625MB
% 0.11/0.19 % OS : Linux 6.8.0-71-generic
% 0.11/0.19 % CPULimit : 300
% 0.11/0.19 % WCLimit : 300
% 0.11/0.19 % DateTime : Tue Sep 29 14:46:51 UTC 2026
% 0.11/0.20 % CPUTime :
% 0.11/0.20 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
% 0.85/0.76 % [INFO] Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ...
% 1.16/0.95 % [INFO] Parsing done (186ms).
% 1.16/0.96 % [INFO] Running in sequential loop mode.
% 1.72/1.37 % [INFO] eprover registered as external prover.
% 1.72/1.38 % [INFO] Scanning for conjecture ...
% 1.91/1.46 % [INFO] Found a conjecture (or negated_conjecture) and 0 axioms. Running axiom selection ...
% 1.91/1.49 % [INFO] Axiom selection finished. Selected 0 axioms (removed 0 axioms).
% 2.05/1.50 % [INFO] Problem is higher-order (TPTP THF).
% 2.05/1.50 % [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 ...
% 2.81/1.88 % External prover 'e' found a proof!
% 2.81/1.88 % [INFO] Killing All external provers ...
% 2.81/1.88 % Time passed: 1554ms (effective reasoning time: 912ms)
% 2.81/1.88 % 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)>
% 2.81/1.88 % Axioms used in derivation (0):
% 2.81/1.88 % No. of inferences in proof: 4
% 2.81/1.88 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : 1554 ms resp. 912 ms w/o parsing
% 3.18/1.91 % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 3.18/1.91 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------