%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : COL055-1 : TPTP v9.3.1. Released v1.0.0.
% 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 : n018.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 06:56:18 AM UTC 2026
% Result : Unsatisfiable 3.83s 2.62s
% Output : Refutation 3.83s
% Verified :
% SZS Type : Refutation
% Derivation depth : 2
% Number of leaves : 2
% Syntax : Number of formulae : 5 ( 3 unt; 0 typ; 0 def)
% Number of atoms : 7 ( 6 equ; 0 cnn)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 18 ( 4 ~; 2 |; 0 &; 12 @)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 5 ( 3 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 5 ( 3 usr; 3 con; 0-2 aty)
% Number of variables : 4 ( 0 ^; 4 !; 0 ?; 4 :)
% Comments :
%------------------------------------------------------------------------------
thf(response_decl,type,
response: $i > $i > $i ).
thf(a_decl,type,
a: $i ).
thf(b_decl,type,
b: $i ).
thf(1,negated_conjecture,
! [B: $i,A: $i] :
( ( ( B @ ( a @ response ) )
!= A )
| ( ( A @ ( a @ response ) )
!= B ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_happiness) ).
thf(3,plain,
! [B: $i,A: $i] :
( ( ( B @ ( a @ response ) )
!= A )
| ( ( A @ ( a @ response ) )
!= B ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[1]) ).
thf(2,axiom,
( ( b @ ( a @ response ) )
= b ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fond_bird_exists) ).
thf(7,plain,
( ( b @ ( a @ response ) )
= b ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(15,plain,
$false,
inference(e,[status(thm)],[3,7]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : COL055-1 : TPTP v9.3.1. Released v1.0.0.
% 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 : n018.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 23:11:37 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
% 1.28/1.27 % [INFO] Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ...
% 1.80/1.51 % [INFO] Parsing done (237ms).
% 1.80/1.52 % [INFO] Running in sequential loop mode.
% 2.40/1.93 % [INFO] eprover registered as external prover.
% 2.40/1.94 % [INFO] Scanning for conjecture ...
% 2.40/2.02 % [INFO] Found a conjecture (or negated_conjecture) and 1 axioms. Running axiom selection ...
% 2.64/2.06 % [INFO] Axiom selection finished. Selected 1 axioms (removed 0 axioms).
% 2.64/2.06 % [INFO] Problem is propositional (TPTP CNF).
% 2.64/2.07 % [INFO] Type checking passed.
% 2.64/2.07 % [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 ...
% 3.83/2.62 % External prover 'e' found a proof!
% 3.83/2.62 % [INFO] Killing All external provers ...
% 3.83/2.62 % Time passed: 1995ms (effective reasoning time: 1087ms)
% 3.83/2.62 % Axioms used in derivation (1): fond_bird_exists
% 3.83/2.62 % No. of inferences in proof: 5
% 3.83/2.62 % SZS status Unsatisfiable for /export/starexec/sandbox2/benchmark/theBenchmark.p : 1995 ms resp. 1087 ms w/o parsing
% 3.83/2.65 % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 3.83/2.65 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------