%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : NUM662_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 : n001.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 08:09:30 AM UTC 2026
% Result : Theorem 5.91s 3.10s
% Output : Refutation 5.91s
% Verified :
% SZS Type : Refutation
% Derivation depth : 11
% Number of leaves : 6
% Syntax : Number of formulae : 31 ( 29 unt; 0 typ; 2 def)
% Number of atoms : 35 ( 34 equ; 0 cnn)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 140 ( 30 ~; 2 |; 0 &; 108 @)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 6 ( 3 avg)
% Number of types : 1 ( 1 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 8 ( 6 usr; 6 con; 0-2 aty)
% Number of variables : 35 ( 0 ^; 30 !; 3 ?; 35 :)
% ( 0 !>; 0 ?*; 0 @-; 2 @+)
% Comments :
%------------------------------------------------------------------------------
thf(nat_type,type,
nat: $tType ).
thf(x_decl,type,
x: nat ).
thf(y_decl,type,
y: nat ).
thf(z_decl,type,
z: nat ).
thf(pl_decl,type,
pl: nat > nat > nat ).
thf(sk1_decl,type,
sk1: nat ).
thf(sk2_decl,type,
sk2: nat ).
thf(sk1_def,definition,
( sk1
= ( @+[A: nat] :
( y
= ( A @ ( x @ pl ) ) ) ) ) ).
thf(sk2_def,definition,
( sk2
= ( @+[A: nat] :
( z
= ( A @ ( y @ pl ) ) ) ) ) ).
thf(3,axiom,
~ ! [A: nat] :
( y
!= ( A @ ( x @ pl ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',l) ).
thf(12,plain,
~ ! [A: nat] :
( y
!= ( A @ ( x @ pl ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).
thf(13,plain,
~ ! [A: nat] :
( y
!= ( A @ ( x @ pl ) ) ),
inference(polarity_switch,[status(thm)],[12]) ).
thf(14,plain,
~ ~ ? [A: nat] :
( y
= ( A @ ( x @ pl ) ) ),
inference(miniscope,[status(thm)],[13]) ).
thf(15,plain,
( y
= ( sk1 @ ( x @ pl ) ) ),
inference(cnf,[status(esa)],[14]) ).
thf(16,plain,
( ( sk1 @ ( x @ pl ) )
= y ),
inference(lifteq,[status(thm)],[15]) ).
thf(6,axiom,
! [A: nat,B: nat,C: nat] :
( ( C @ ( B @ ( A @ pl ) @ pl ) )
= ( C @ ( B @ pl ) @ ( A @ pl ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz5) ).
thf(23,plain,
! [A: nat,B: nat,C: nat] :
( ( C @ ( B @ ( A @ pl ) @ pl ) )
= ( C @ ( B @ pl ) @ ( A @ pl ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).
thf(24,plain,
! [C: nat,B: nat,A: nat] :
( ( C @ ( B @ ( A @ pl ) @ pl ) )
= ( C @ ( B @ pl ) @ ( A @ pl ) ) ),
inference(cnf,[status(esa)],[23]) ).
thf(25,plain,
! [C: nat,B: nat,A: nat] :
( ( C @ ( B @ ( A @ pl ) @ pl ) )
= ( C @ ( B @ pl ) @ ( A @ pl ) ) ),
inference(lifteq,[status(thm)],[24]) ).
thf(45,plain,
! [C: nat,B: nat,A: nat] :
( ( ( sk1 @ ( x @ pl ) )
!= ( B @ ( A @ pl ) ) )
| ( ( C @ ( y @ pl ) )
= ( C @ ( B @ pl ) @ ( A @ pl ) ) ) ),
inference(paramod_ordered,[status(thm)],[16,25]) ).
thf(46,plain,
! [A: nat] :
( ( A @ ( y @ pl ) )
= ( A @ ( sk1 @ pl ) @ ( x @ pl ) ) ),
inference(pattern_uni,[status(thm)],[45:[bind(A,$thf( x )),bind(B,$thf( sk1 ))]]) ).
thf(60,plain,
! [A: nat] :
( ( A @ ( y @ pl ) )
= ( A @ ( sk1 @ pl ) @ ( x @ pl ) ) ),
inference(simp,[status(thm)],[46]) ).
thf(4,axiom,
~ ! [A: nat] :
( z
!= ( A @ ( y @ pl ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',k) ).
thf(17,plain,
~ ! [A: nat] :
( z
!= ( A @ ( y @ pl ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).
thf(18,plain,
~ ! [A: nat] :
( z
!= ( A @ ( y @ pl ) ) ),
inference(polarity_switch,[status(thm)],[17]) ).
thf(19,plain,
~ ~ ? [A: nat] :
( z
= ( A @ ( y @ pl ) ) ),
inference(miniscope,[status(thm)],[18]) ).
thf(20,plain,
( z
= ( sk2 @ ( y @ pl ) ) ),
inference(cnf,[status(esa)],[19]) ).
thf(21,plain,
( ( sk2 @ ( y @ pl ) )
= z ),
inference(lifteq,[status(thm)],[20]) ).
thf(217,plain,
! [A: nat] :
( ( ( A @ ( y @ pl ) )
!= ( sk2 @ ( y @ pl ) ) )
| ( ( A @ ( sk1 @ pl ) @ ( x @ pl ) )
= z ) ),
inference(paramod_ordered,[status(thm)],[60,21]) ).
thf(218,plain,
( ( sk2 @ ( sk1 @ pl ) @ ( x @ pl ) )
= z ),
inference(pattern_uni,[status(thm)],[217:[bind(A,$thf( sk2 ))]]) ).
thf(1,conjecture,
~ ! [A: nat] :
( z
!= ( A @ ( x @ pl ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz15) ).
thf(2,negated_conjecture,
~ ~ ! [A: nat] :
( z
!= ( A @ ( x @ pl ) ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(7,plain,
~ ~ ! [A: nat] :
( z
!= ( A @ ( x @ pl ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(8,plain,
! [A: nat] :
( z
!= ( A @ ( x @ pl ) ) ),
inference(polarity_switch,[status(thm)],[7]) ).
thf(9,plain,
~ ? [A: nat] :
( z
= ( A @ ( x @ pl ) ) ),
inference(miniscope,[status(thm)],[8]) ).
thf(10,plain,
! [A: nat] :
( z
!= ( A @ ( x @ pl ) ) ),
inference(cnf,[status(esa)],[9]) ).
thf(11,plain,
! [A: nat] :
( ( A @ ( x @ pl ) )
!= z ),
inference(lifteq,[status(thm)],[10]) ).
thf(314,plain,
$false,
inference(simplifyReflect,[status(thm)],[218,11]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : NUM662_8 : TPTP v9.3.1. Released v8.0.0.
% 0.00/0.08 % 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
% 0.14/0.41 % Computer : n001.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
% 0.14/0.42 % DateTime : Sat Sep 26 03:44:57 UTC 2026
% 0.14/0.42 % CPUTime :
% 0.14/0.42 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
% 0.87/1.01 % [INFO] Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ...
% 1.30/1.19 % [INFO] Parsing done (178ms).
% 1.39/1.20 % [INFO] Running in sequential loop mode.
% 2.00/1.60 % [INFO] eprover registered as external prover.
% 2.00/1.61 % [INFO] Scanning for conjecture ...
% 2.17/1.71 % [INFO] Found a conjecture (or negated_conjecture) and 4 axioms. Running axiom selection ...
% 2.17/1.75 % [INFO] Axiom selection finished. Selected 4 axioms (removed 0 axioms).
% 2.17/1.76 % [INFO] Problem is typed first-order (TPTP TFF).
% 2.17/1.76 % [INFO] Type checking passed.
% 2.17/1.77 % [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 ...
% 5.91/3.09 % [INFO] Killing All external provers ...
% 5.91/3.09 % Time passed: 2530ms (effective reasoning time: 1881ms)
% 5.91/3.09 % 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)>
% 5.91/3.10 % Axioms used in derivation (3): l, satz5, k
% 5.91/3.10 % No. of inferences in proof: 29
% 5.91/3.10 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : 2530 ms resp. 1881 ms w/o parsing
% 5.91/3.14 % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 5.91/3.14 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------