%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : NUM658_8 : TPTP v9.3.1. Released v8.0.0.
% 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 : n015.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 08:09:29 AM UTC 2026
% Result : Theorem 4.83s 2.80s
% Output : Refutation 4.83s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 3
% Syntax : Number of formulae : 20 ( 8 unt; 0 typ; 0 def)
% Number of atoms : 43 ( 17 equ; 0 cnn)
% Maximal formula atoms : 4 ( 2 avg)
% Number of connectives : 85 ( 20 ~; 11 |; 1 &; 46 @)
% ( 0 <=>; 7 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 5 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 7 ( 4 usr; 4 con; 0-2 aty)
% Number of variables : 12 ( 0 ^; 12 !; 0 ?; 12 :)
% Comments :
%------------------------------------------------------------------------------
thf(nat_type,type,
nat: $tType ).
thf(x_decl,type,
x: nat ).
thf(y_decl,type,
y: nat ).
thf(more_decl,type,
more: nat > nat > $o ).
thf(less_decl,type,
less: nat > nat > $o ).
thf(4,axiom,
! [A: nat,B: nat] :
( ( A != B )
=> ( ~ ( B @ ( A @ more ) )
=> ( B @ ( A @ less ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',satz10a) ).
thf(13,plain,
! [A: nat,B: nat] :
( ( A != B )
=> ( ~ ( B @ ( A @ more ) )
=> ( B @ ( A @ less ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).
thf(14,plain,
! [B: nat,A: nat] :
( ( B @ ( A @ less ) )
| ( B @ ( A @ more ) )
| ( A = B ) ),
inference(cnf,[status(esa)],[13]) ).
thf(15,plain,
! [B: nat,A: nat] :
( ( B @ ( A @ less ) )
| ( B @ ( A @ more ) )
| ( A = B ) ),
inference(lifteq,[status(thm)],[14]) ).
thf(1,conjecture,
y @ ( x @ less ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',satz10j) ).
thf(2,negated_conjecture,
~ ( y @ ( x @ less ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(6,plain,
~ ( y @ ( x @ less ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(25,plain,
! [B: nat,A: nat] :
( ( ( B @ ( A @ less ) )
!= ( y @ ( x @ less ) ) )
| ~ $true
| ( B @ ( A @ more ) )
| ( A = B ) ),
inference(paramod_ordered,[status(thm)],[15,6]) ).
thf(26,plain,
! [B: nat,A: nat] :
( ( ( B @ ( A @ less ) )
!= ( y @ ( x @ less ) ) )
| ( B @ ( A @ more ) )
| ( A = B ) ),
inference(simp,[status(thm)],[25]) ).
thf(27,plain,
( ( y @ ( x @ more ) )
| ( y = x ) ),
inference(pattern_uni,[status(thm)],[26:[bind(A,$thf( x )),bind(B,$thf( y ))]]) ).
thf(3,axiom,
~ ( ~ ( y @ ( x @ more ) )
=> ( x = y ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',n) ).
thf(7,plain,
~ ( ~ ( y @ ( x @ more ) )
=> ( x = y ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).
thf(8,plain,
~ ( ~ ( y @ ( x @ more ) )
=> ( x = y ) ),
inference(polarity_switch,[status(thm)],[7]) ).
thf(9,plain,
( ( x != y )
& ~ ( y @ ( x @ more ) ) ),
inference(cnf,[status(esa)],[8]) ).
thf(10,plain,
~ ( y @ ( x @ more ) ),
inference(cnfConj,[status(thm)],[9]) ).
thf(80,plain,
( $false
| ( y = x ) ),
inference(rewrite,[status(thm)],[27,10]) ).
thf(81,plain,
y = x,
inference(simp,[status(thm)],[80]) ).
thf(11,plain,
x != y,
inference(cnfConj,[status(thm)],[9]) ).
thf(12,plain,
y != x,
inference(lifteq,[status(thm)],[11]) ).
thf(82,plain,
$false,
inference(simplifyReflect,[status(thm)],[81,12]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : NUM658_8 : TPTP v9.3.1. Released v8.0.0.
% 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
% 0.14/0.41 % Computer : n015.cluster.edu
% 0.14/0.41 % Model : x86_64 x86_64
% 0.14/0.41 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.41 % Memory : 8046.5625MB
% 0.14/0.41 % OS : Linux 6.8.0-71-generic
% 0.14/0.41 % CPULimit : 300
% 0.14/0.41 % WCLimit : 300
% 0.14/0.41 % DateTime : Sat Sep 26 03:41:28 UTC 2026
% 0.14/0.42 % CPUTime :
% 0.14/0.42 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
% 0.89/1.01 % [INFO] Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ...
% 1.28/1.19 % [INFO] Parsing done (181ms).
% 1.41/1.21 % [INFO] Running in sequential loop mode.
% 2.00/1.62 % [INFO] eprover registered as external prover.
% 2.00/1.63 % [INFO] Scanning for conjecture ...
% 2.19/1.72 % [INFO] Found a conjecture (or negated_conjecture) and 3 axioms. Running axiom selection ...
% 2.19/1.75 % [INFO] Axiom selection finished. Selected 3 axioms (removed 0 axioms).
% 2.19/1.78 % [INFO] Problem is typed first-order (TPTP TFF).
% 2.19/1.78 % [INFO] Type checking passed.
% 2.19/1.79 % [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 ...
% 4.47/2.79 % [INFO] Killing All external provers ...
% 4.47/2.80 % Time passed: 2231ms (effective reasoning time: 1579ms)
% 4.83/2.80 % 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)>
% 4.83/2.80 % Axioms used in derivation (2): satz10a, n
% 4.83/2.80 % No. of inferences in proof: 20
% 4.83/2.80 % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 2231 ms resp. 1579 ms w/o parsing
% 4.83/2.85 % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 4.83/2.85 % [INFO] Killing All external provers ...
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