%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : NLP265^18 : TPTP v9.3.1. Released v8.1.0.
% 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 : n009.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 08:16:18 AM UTC 2026
% Result : Theorem 3.74s 2.17s
% Output : Refutation 3.87s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 14
% Syntax : Number of formulae : 25 ( 14 unt; 0 typ; 5 def)
% Number of atoms : 84 ( 5 equ; 0 cnn)
% Maximal formula atoms : 12 ( 3 avg)
% Number of connectives : 186 ( 6 ~; 0 |; 3 &; 158 @)
% ( 0 <=>; 19 =>; 0 <=; 0 <~>)
% Maximal formula depth : 12 ( 6 avg)
% Number of types : 4 ( 2 usr)
% Number of type conns : 7 ( 7 >; 0 *; 0 +; 0 <<)
% Number of symbols : 15 ( 13 usr; 7 con; 0-3 aty)
% Number of variables : 44 ( 12 ^; 32 !; 0 ?; 44 :)
% Comments :
%------------------------------------------------------------------------------
thf(mworld_type,type,
mworld: $tType ).
thf(mindex_type,type,
mindex: $tType ).
thf(mrel_decl,type,
mrel: mindex > mworld > mworld > $o ).
thf('#i_alice_decl',type,
'#i_alice': mindex ).
thf('#i_bob_decl',type,
'#i_bob': mindex ).
thf('#b_alice_decl',type,
'#b_alice': mindex ).
thf('#b_bob_decl',type,
'#b_bob': mindex ).
thf(mactual_decl,type,
mactual: mworld ).
thf(mlocal_decl,type,
mlocal: ( mworld > $o ) > $o ).
thf(mnot_decl,type,
mnot: ( mworld > $o ) > mworld > $o ).
thf(mand_decl,type,
mand: ( mworld > $o ) > ( mworld > $o ) > mworld > $o ).
thf(mimplies_decl,type,
mimplies: ( mworld > $o ) > ( mworld > $o ) > mworld > $o ).
thf(mbox_decl,type,
mbox: mindex > ( mworld > $o ) > mworld > $o ).
thf(portland_decl,type,
portland: $i ).
thf(bigcity_decl,type,
bigcity: $i > mworld > $o ).
thf(mlocal_def,definition,
( mlocal
= ( ^ [A: mworld > $o] : ( A @ mactual ) ) ) ).
thf(mnot_def,definition,
( mnot
= ( ^ [A: mworld > $o,B: mworld] :
~ ( A @ B ) ) ) ).
thf(mand_def,definition,
( mand
= ( ^ [A: mworld > $o,B: mworld > $o,C: mworld] :
( ( A @ C )
& ( B @ C ) ) ) ) ).
thf(mimplies_def,definition,
( mimplies
= ( ^ [A: mworld > $o,B: mworld > $o,C: mworld] :
( ( A @ C )
=> ( B @ C ) ) ) ) ).
thf(mbox_def,definition,
( mbox
= ( ^ [A: mindex,B: mworld > $o,C: mworld] :
! [D: mworld] :
( ( mrel @ A @ C @ D )
=> ( B @ D ) ) ) ) ).
thf(7,axiom,
mlocal @ ( mbox @ '#b_alice' @ ( mimplies @ ( mand @ ( bigcity @ portland ) @ ( mbox @ '#b_alice' @ ( mbox @ '#b_bob' @ ( mnot @ ( bigcity @ portland ) ) ) ) ) @ ( mbox @ '#i_alice' @ ( mbox @ '#b_bob' @ ( bigcity @ portland ) ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_1_alice) ).
thf(24,plain,
! [A: mworld] :
( ( mrel @ '#b_alice' @ mactual @ A )
=> ( ( ( bigcity @ portland @ A )
& ! [B: mworld] :
( ( mrel @ '#b_alice' @ A @ B )
=> ! [C: mworld] :
( ( mrel @ '#b_bob' @ B @ C )
=> ~ ( bigcity @ portland @ C ) ) ) )
=> ! [B: mworld] :
( ( mrel @ '#i_alice' @ A @ B )
=> ! [C: mworld] :
( ( mrel @ '#b_bob' @ B @ C )
=> ( bigcity @ portland @ C ) ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).
thf(9,axiom,
mlocal @ ( mbox @ '#b_alice' @ ( bigcity @ portland ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_2) ).
thf(34,plain,
! [A: mworld] :
( ( mrel @ '#b_alice' @ mactual @ A )
=> ( bigcity @ portland @ A ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[9]) ).
thf(6,axiom,
! [A: mworld,B: mworld] : ( mrel @ '#b_bob' @ A @ B ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p','mrel_#b_bob_universal') ).
thf(22,plain,
! [A: mworld,B: mworld] : ( mrel @ '#b_bob' @ A @ B ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).
thf(4,axiom,
! [A: mworld,B: mworld] : ( mrel @ '#i_bob' @ A @ B ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p','mrel_#i_bob_universal') ).
thf(18,plain,
! [A: mworld,B: mworld] : ( mrel @ '#i_bob' @ A @ B ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).
thf(3,axiom,
! [A: mworld,B: mworld] : ( mrel @ '#i_alice' @ A @ B ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p','mrel_#i_alice_universal') ).
thf(16,plain,
! [A: mworld,B: mworld] : ( mrel @ '#i_alice' @ A @ B ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).
thf(1,conjecture,
mlocal @ ( mbox @ '#i_alice' @ ( mbox @ '#b_bob' @ ( bigcity @ portland ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',con) ).
thf(2,negated_conjecture,
~ ( mlocal @ ( mbox @ '#i_alice' @ ( mbox @ '#b_bob' @ ( bigcity @ portland ) ) ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(11,plain,
~ ! [A: mworld] :
( ( mrel @ '#i_alice' @ mactual @ A )
=> ! [B: mworld] :
( ( mrel @ '#b_bob' @ A @ B )
=> ( bigcity @ portland @ B ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(10,axiom,
mlocal @ ( mbox @ '#b_alice' @ ( mbox @ '#b_bob' @ ( mnot @ ( bigcity @ portland ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_3) ).
thf(36,plain,
! [A: mworld] :
( ( mrel @ '#b_alice' @ mactual @ A )
=> ! [B: mworld] :
( ( mrel @ '#b_bob' @ A @ B )
=> ~ ( bigcity @ portland @ B ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[10]) ).
thf(5,axiom,
! [A: mworld,B: mworld] : ( mrel @ '#b_alice' @ A @ B ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p','mrel_#b_alice_universal') ).
thf(20,plain,
! [A: mworld,B: mworld] : ( mrel @ '#b_alice' @ A @ B ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).
thf(8,axiom,
mlocal @ ( mbox @ '#b_bob' @ ( mimplies @ ( mand @ ( bigcity @ portland ) @ ( mbox @ '#b_bob' @ ( mbox @ '#b_alice' @ ( mnot @ ( bigcity @ portland ) ) ) ) ) @ ( mbox @ '#i_bob' @ ( mbox @ '#b_alice' @ ( bigcity @ portland ) ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_1_bob) ).
thf(29,plain,
! [A: mworld] :
( ( mrel @ '#b_bob' @ mactual @ A )
=> ( ( ( bigcity @ portland @ A )
& ! [B: mworld] :
( ( mrel @ '#b_bob' @ A @ B )
=> ! [C: mworld] :
( ( mrel @ '#b_alice' @ B @ C )
=> ~ ( bigcity @ portland @ C ) ) ) )
=> ! [B: mworld] :
( ( mrel @ '#i_bob' @ A @ B )
=> ! [C: mworld] :
( ( mrel @ '#b_alice' @ B @ C )
=> ( bigcity @ portland @ C ) ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).
thf(38,plain,
$false,
inference(e,[status(thm)],[24,34,22,18,16,11,36,20,29]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : NLP265^18 : TPTP v9.3.1. Released v8.1.0.
% 0.00/0.07 % 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
% 0.10/0.20 % Computer : n009.cluster.edu
% 0.10/0.20 % Model : x86_64 x86_64
% 0.10/0.20 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.20 % Memory : 8046.5625MB
% 0.10/0.20 % OS : Linux 6.8.0-71-generic
% 0.10/0.20 % CPULimit : 300
% 0.10/0.20 % WCLimit : 300
% 0.10/0.20 % DateTime : Tue Sep 29 11:43:15 UTC 2026
% 0.10/0.20 % CPUTime :
% 0.10/0.20 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
% 0.86/0.79 % [INFO] Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ...
% 1.18/1.01 % [INFO] Parsing done (208ms).
% 1.18/1.02 % [INFO] Running in sequential loop mode.
% 2.07/1.42 % [INFO] eprover registered as external prover.
% 2.07/1.43 % [INFO] Scanning for conjecture ...
% 2.22/1.54 % [INFO] Found a conjecture (or negated_conjecture) and 8 axioms. Running axiom selection ...
% 2.22/1.58 % [INFO] Axiom selection finished. Selected 8 axioms (removed 0 axioms).
% 2.22/1.59 % [INFO] Problem is higher-order (TPTP THF).
% 2.22/1.59 % [INFO] Type checking passed.
% 2.40/1.60 % [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 ...
% 3.74/2.17 % External prover 'e' found a proof!
% 3.74/2.17 % [INFO] Killing All external provers ...
% 3.74/2.17 % Time passed: 1822ms (effective reasoning time: 1143ms)
% 3.74/2.17 % 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)>
% 3.74/2.17 % Axioms used in derivation (8): axiom_2, axiom_3, mrel_#i_alice_universal, mrel_#b_alice_universal, axiom_1_bob, mrel_#b_bob_universal, mrel_#i_bob_universal, axiom_1_alice
% 3.74/2.17 % No. of inferences in proof: 20
% 3.74/2.17 % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 1822 ms resp. 1143 ms w/o parsing
% 3.87/2.23 % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 3.87/2.23 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------