%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : NUM699^1 : TPTP v9.3.1. Released v3.7.0.
% 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 : n011.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 08:18:01 AM UTC 2026
% Result : Theorem 3.91s 2.26s
% Output : Refutation 4.21s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 4
% Syntax : Number of formulae : 10 ( 8 unt; 0 typ; 0 def)
% Number of atoms : 12 ( 2 equ; 0 cnn)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 35 ( 2 ~; 0 |; 0 &; 31 @)
% ( 0 <=>; 2 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 4 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 9 ( 7 usr; 4 con; 0-2 aty)
% Number of variables : 6 ( 0 ^; 6 !; 0 ?; 6 :)
% Comments :
%------------------------------------------------------------------------------
thf(nat_type,type,
nat: $tType ).
thf(x_decl,type,
x: nat ).
thf(y_decl,type,
y: nat ).
thf(less_decl,type,
less: nat > nat > $o ).
thf(lessis_decl,type,
lessis: nat > nat > $o ).
thf(suc_decl,type,
suc: nat > nat ).
thf(pl_decl,type,
pl: nat > nat > nat ).
thf(n_1_decl,type,
n_1: nat ).
thf(1,conjecture,
lessis @ ( suc @ y ) @ x,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz25c) ).
thf(2,negated_conjecture,
~ ( lessis @ ( suc @ y ) @ x ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(6,plain,
~ ( lessis @ ( suc @ y ) @ x ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(3,axiom,
less @ y @ x,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',l) ).
thf(7,plain,
less @ y @ x,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).
thf(4,axiom,
! [A: nat,B: nat] :
( ( less @ B @ A )
=> ( lessis @ ( pl @ B @ n_1 ) @ A ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz25b) ).
thf(8,plain,
! [A: nat,B: nat] :
( ( less @ B @ A )
=> ( lessis @ ( pl @ B @ n_1 ) @ A ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).
thf(5,axiom,
! [A: nat] :
( ( pl @ A @ n_1 )
= ( suc @ A ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz4a) ).
thf(10,plain,
! [A: nat] :
( ( pl @ A @ n_1 )
= ( suc @ A ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).
thf(13,plain,
$false,
inference(e,[status(thm)],[6,7,8,10]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : NUM699^1 : TPTP v9.3.1. Released v3.7.0.
% 0.00/0.12 % 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
% 0.26/0.33 % Computer : n011.cluster.edu
% 0.26/0.33 % Model : x86_64 x86_64
% 0.26/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.26/0.33 % Memory : 8046.5625MB
% 0.26/0.33 % OS : Linux 6.8.0-71-generic
% 0.26/0.33 % CPULimit : 300
% 0.26/0.33 % WCLimit : 300
% 0.26/0.33 % DateTime : Tue Sep 29 12:41:16 UTC 2026
% 0.26/0.33 % CPUTime :
% 0.26/0.33 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
% 1.15/0.82 % [INFO] Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ...
% 1.39/0.97 % [INFO] Parsing done (152ms).
% 1.39/0.98 % [INFO] Running in sequential loop mode.
% 2.17/1.35 % [INFO] eprover registered as external prover.
% 2.17/1.36 % [INFO] Scanning for conjecture ...
% 2.35/1.47 % [INFO] Found a conjecture (or negated_conjecture) and 3 axioms. Running axiom selection ...
% 2.52/1.52 % [INFO] Axiom selection finished. Selected 3 axioms (removed 0 axioms).
% 2.52/1.54 % [INFO] Problem is higher-order (TPTP THF).
% 2.52/1.55 % [INFO] Type checking passed.
% 2.52/1.56 % [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 ...
% 3.91/2.25 % External prover 'e' found a proof!
% 3.91/2.26 % [INFO] Killing All external provers ...
% 3.91/2.26 % Time passed: 1788ms (effective reasoning time: 1268ms)
% 3.91/2.26 % 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)>
% 3.91/2.26 % Axioms used in derivation (3): l, satz25b, satz4a
% 3.91/2.26 % No. of inferences in proof: 10
% 3.91/2.26 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : 1788 ms resp. 1268 ms w/o parsing
% 4.21/2.31 % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 4.21/2.31 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------