%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : NUM680_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 : n008.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 08:09:35 AM UTC 2026
% Result : Theorem 7.00s 3.33s
% Output : Refutation 7.00s
% Verified :
% SZS Type : Refutation
% Derivation depth : 19
% Number of leaves : 5
% Syntax : Number of formulae : 41 ( 14 unt; 0 typ; 0 def)
% Number of atoms : 105 ( 29 equ; 0 cnn)
% Maximal formula atoms : 6 ( 2 avg)
% Number of connectives : 324 ( 64 ~; 28 |; 2 &; 208 @)
% ( 0 <=>; 22 =>; 0 <=; 0 <~>)
% Maximal formula depth : 13 ( 6 avg)
% Number of types : 2 ( 1 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 9 ( 6 usr; 5 con; 0-2 aty)
% Number of variables : 61 ( 0 ^; 61 !; 0 ?; 61 :)
% 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(more_decl,type,
more: nat > nat > $o ).
thf(pl_decl,type,
pl: nat > nat > nat ).
thf(less_decl,type,
less: nat > nat > $o ).
thf(7,axiom,
! [A: nat,B: nat,C: nat] :
( ( B @ ( A @ less ) )
=> ( C @ ( B @ pl ) @ ( C @ ( A @ pl ) @ less ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz19c) ).
thf(28,plain,
! [A: nat,B: nat,C: nat] :
( ( B @ ( A @ less ) )
=> ( C @ ( B @ pl ) @ ( C @ ( A @ pl ) @ less ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).
thf(29,plain,
! [A: nat,B: nat] :
( ( B @ ( A @ less ) )
=> ! [C: nat] : ( C @ ( B @ pl ) @ ( C @ ( A @ pl ) @ less ) ) ),
inference(miniscope,[status(thm)],[28]) ).
thf(30,plain,
! [C: nat,B: nat,A: nat] :
( ( C @ ( B @ pl ) @ ( C @ ( A @ pl ) @ less ) )
| ~ ( B @ ( A @ less ) ) ),
inference(cnf,[status(esa)],[29]) ).
thf(3,axiom,
z @ ( y @ pl ) @ ( z @ ( x @ pl ) @ more ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',m) ).
thf(10,plain,
z @ ( y @ pl ) @ ( z @ ( x @ pl ) @ more ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).
thf(5,axiom,
! [A: nat,B: nat] :
~ ( ( ( A = B )
=> ~ ( B @ ( A @ more ) ) )
=> ~ ~ ( ( ( B @ ( A @ more ) )
=> ~ ( B @ ( A @ less ) ) )
=> ~ ( ( B @ ( A @ less ) )
=> ( A != B ) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz10b) ).
thf(12,plain,
! [A: nat,B: nat] :
~ ( ( ( A = B )
=> ~ ( B @ ( A @ more ) ) )
=> ( ( ( B @ ( A @ more ) )
=> ~ ( B @ ( A @ less ) ) )
=> ~ ( ( B @ ( A @ less ) )
=> ( A != B ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).
thf(13,plain,
~ ( ! [A: nat,B: nat] :
( ( A = B )
=> ~ ( B @ ( A @ more ) ) )
=> ( ! [A: nat,B: nat] :
( ( B @ ( A @ more ) )
=> ~ ( B @ ( A @ less ) ) )
=> ~ ! [A: nat,B: nat] :
( ( B @ ( A @ less ) )
=> ( A != B ) ) ) ),
inference(miniscope,[status(thm)],[12]) ).
thf(14,plain,
! [F: nat,E: nat,D: nat,C: nat,B: nat,A: nat] :
( ( ( E != F )
| ~ ( F @ ( E @ less ) ) )
& ( ~ ( D @ ( C @ less ) )
| ~ ( D @ ( C @ more ) ) )
& ( ~ ( B @ ( A @ more ) )
| ( A != B ) ) ),
inference(cnf,[status(esa)],[13]) ).
thf(16,plain,
! [B: nat,A: nat] :
( ~ ( B @ ( A @ less ) )
| ~ ( B @ ( A @ more ) ) ),
inference(cnfConj,[status(thm)],[14]) ).
thf(20,plain,
! [B: nat,A: nat] :
( ~ ( B @ ( A @ less ) )
| ~ ( B @ ( A @ more ) ) ),
inference(simp,[status(thm)],[16]) ).
thf(169,plain,
! [B: nat,A: nat] :
( ( ( z @ ( y @ pl ) @ ( z @ ( x @ pl ) @ more ) )
!= ( B @ ( A @ more ) ) )
| ~ ( B @ ( A @ less ) )
| ~ $true ),
inference(paramod_ordered,[status(thm)],[10,20]) ).
thf(170,plain,
! [B: nat,A: nat] :
( ( ( z @ ( y @ pl ) @ ( z @ ( x @ pl ) @ more ) )
!= ( B @ ( A @ more ) ) )
| ~ ( B @ ( A @ less ) ) ),
inference(simp,[status(thm)],[169]) ).
thf(171,plain,
~ ( z @ ( y @ pl ) @ ( z @ ( x @ pl ) @ less ) ),
inference(pattern_uni,[status(thm)],[170:[bind(A,$thf( z @ ( x @ pl ) )),bind(B,$thf( z @ ( y @ pl ) ))]]) ).
thf(377,plain,
! [C: nat,B: nat,A: nat] :
( ( ( C @ ( B @ pl ) @ ( C @ ( A @ pl ) @ less ) )
!= ( z @ ( y @ pl ) @ ( z @ ( x @ pl ) @ less ) ) )
| ~ $true
| ~ ( B @ ( A @ less ) ) ),
inference(paramod_ordered,[status(thm)],[30,171]) ).
thf(378,plain,
! [C: nat,B: nat,A: nat] :
( ( ( C @ ( B @ pl ) @ ( C @ ( A @ pl ) @ less ) )
!= ( z @ ( y @ pl ) @ ( z @ ( x @ pl ) @ less ) ) )
| ~ ( B @ ( A @ less ) ) ),
inference(simp,[status(thm)],[377]) ).
thf(379,plain,
~ ( y @ ( x @ less ) ),
inference(pattern_uni,[status(thm)],[378:[bind(A,$thf( x )),bind(B,$thf( y )),bind(C,$thf( z ))]]) ).
thf(8,axiom,
! [A: nat,B: nat] :
( ( A != B )
=> ( ~ ( B @ ( A @ more ) )
=> ( B @ ( A @ less ) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz10a) ).
thf(31,plain,
! [A: nat,B: nat] :
( ( A != B )
=> ( ~ ( B @ ( A @ more ) )
=> ( B @ ( A @ less ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).
thf(32,plain,
! [B: nat,A: nat] :
( ( B @ ( A @ less ) )
| ( B @ ( A @ more ) )
| ( A = B ) ),
inference(cnf,[status(esa)],[31]) ).
thf(33,plain,
! [B: nat,A: nat] :
( ( B @ ( A @ less ) )
| ( B @ ( A @ more ) )
| ( A = B ) ),
inference(lifteq,[status(thm)],[32]) ).
thf(15,plain,
! [B: nat,A: nat] :
( ~ ( B @ ( A @ more ) )
| ( A != B ) ),
inference(cnfConj,[status(thm)],[14]) ).
thf(18,plain,
! [B: nat,A: nat] :
( ~ ( B @ ( A @ more ) )
| ( A != B ) ),
inference(lifteq,[status(thm)],[15]) ).
thf(19,plain,
! [A: nat] :
~ ( A @ ( A @ more ) ),
inference(simp,[status(thm)],[18]) ).
thf(37,plain,
! [A: nat] :
( ( ( z @ ( y @ pl ) @ ( z @ ( x @ pl ) @ more ) )
!= ( A @ ( A @ more ) ) )
| ~ $true ),
inference(paramod_ordered,[status(thm)],[10,19]) ).
thf(38,plain,
! [A: nat] :
( ( z @ ( y @ pl ) @ ( z @ ( x @ pl ) @ more ) )
!= ( A @ ( A @ more ) ) ),
inference(simp,[status(thm)],[37]) ).
thf(39,plain,
! [A: nat] :
( ( ( z @ ( y @ pl ) )
!= A )
| ( ( z @ ( x @ pl ) )
!= A ) ),
inference(simp,[status(thm)],[38]) ).
thf(40,plain,
( ( z @ ( y @ pl ) )
!= ( z @ ( x @ pl ) ) ),
inference(simp,[status(thm)],[39]) ).
thf(41,plain,
( ( z != z )
| ( y != x ) ),
inference(simp,[status(thm)],[40]) ).
thf(42,plain,
y != x,
inference(simp,[status(thm)],[41]) ).
thf(69,plain,
! [B: nat,A: nat] :
( ( B != y )
| ( A != x )
| ( B @ ( A @ less ) )
| ( B @ ( A @ more ) ) ),
inference(paramod_ordered,[status(thm)],[33,42]) ).
thf(70,plain,
! [A: nat] :
( ( A != x )
| ( y @ ( A @ less ) )
| ( y @ ( A @ more ) ) ),
inference(pattern_uni,[status(thm)],[69:[bind(A,$thf( A )),bind(B,$thf( y ))]]) ).
thf(116,plain,
( ( y @ ( x @ less ) )
| ( y @ ( x @ more ) ) ),
inference(simp,[status(thm)],[70]) ).
thf(1,conjecture,
y @ ( x @ more ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',satz20a) ).
thf(2,negated_conjecture,
~ ( y @ ( x @ more ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(9,plain,
~ ( y @ ( x @ more ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(322,plain,
( ( y @ ( x @ less ) )
| $false ),
inference(rewrite,[status(thm)],[116,9]) ).
thf(323,plain,
y @ ( x @ less ),
inference(simp,[status(thm)],[322]) ).
thf(395,plain,
~ $true,
inference(rewrite,[status(thm)],[379,323]) ).
thf(396,plain,
$false,
inference(simp,[status(thm)],[395]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : NUM680_8 : TPTP v9.3.1. Released v8.0.0.
% 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
% 0.13/0.39 % Computer : n008.cluster.edu
% 0.13/0.39 % Model : x86_64 x86_64
% 0.13/0.39 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.39 % Memory : 8046.5625MB
% 0.13/0.39 % OS : Linux 6.8.0-71-generic
% 0.13/0.39 % CPULimit : 300
% 0.13/0.39 % WCLimit : 300
% 0.13/0.39 % DateTime : Sat Sep 26 03:44:55 UTC 2026
% 0.13/0.39 % CPUTime :
% 0.13/0.39 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
% 0.87/0.97 % [INFO] Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ...
% 1.28/1.17 % [INFO] Parsing done (188ms).
% 1.28/1.18 % [INFO] Running in sequential loop mode.
% 1.83/1.59 % [INFO] eprover registered as external prover.
% 2.02/1.60 % [INFO] Scanning for conjecture ...
% 2.02/1.69 % [INFO] Found a conjecture (or negated_conjecture) and 6 axioms. Running axiom selection ...
% 2.19/1.72 % [INFO] Axiom selection finished. Selected 6 axioms (removed 0 axioms).
% 2.19/1.76 % [INFO] Problem is typed first-order (TPTP TFF).
% 2.19/1.76 % [INFO] Type checking passed.
% 2.19/1.77 % [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 ...
% 7.00/3.32 % [INFO] Killing All external provers ...
% 7.00/3.32 % Time passed: 2778ms (effective reasoning time: 2131ms)
% 7.00/3.32 % 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)>
% 7.00/3.32 % Axioms used in derivation (4): satz19c, m, satz10b, satz10a
% 7.00/3.32 % No. of inferences in proof: 41
% 7.00/3.33 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : 2778 ms resp. 2131 ms w/o parsing
% 7.00/3.37 % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 7.00/3.37 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------