%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : SYO576^7 : TPTP v9.3.1. Released v5.5.0.
% 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 : n026.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 08:46:08 AM UTC 2026
% Result : Theorem 5.35s 2.71s
% Output : Refutation 5.35s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SYO576^7 : TPTP v9.3.1. Released v5.5.0.
% 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
% 0.08/0.21 % Computer : n026.cluster.edu
% 0.08/0.21 % Model : x86_64 x86_64
% 0.08/0.21 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.21 % Memory : 8046.5625MB
% 0.08/0.21 % OS : Linux 6.8.0-71-generic
% 0.08/0.21 % CPULimit : 300
% 0.08/0.21 % WCLimit : 300
% 0.08/0.21 % DateTime : Tue Sep 29 17:19:42 UTC 2026
% 0.08/0.22 % CPUTime :
% 0.08/0.22 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
% 0.88/0.80 % [INFO] Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ...
% 1.92/1.17 % [INFO] Parsing done (367ms).
% 1.92/1.19 % [INFO] Running in sequential loop mode.
% 2.66/1.69 % [INFO] eprover registered as external prover.
% 2.88/1.70 % [INFO] Scanning for conjecture ...
% 3.40/1.94 % [INFO] Found a conjecture (or negated_conjecture) and 4 axioms. Running axiom selection ...
% 3.40/1.99 % [INFO] Axiom selection finished. Selected 4 axioms (removed 0 axioms).
% 3.40/2.00 % [INFO] Problem is higher-order (TPTP THF).
% 3.40/2.00 % [INFO] Type checking passed.
% 3.40/2.01 % [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 ...
% 5.35/2.71 % External prover 'e' found a proof!
% 5.35/2.71 % [INFO] Killing All external provers ...
% 5.35/2.71 % Time passed: 2354ms (effective reasoning time: 1514ms)
% 5.35/2.71 % 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)>
% 5.35/2.71 % Axioms used in derivation (4): a2, cumulative_ax, a1, nonempty_ax
% 5.35/2.71 % No. of inferences in proof: 12
% 5.35/2.71 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : 2354 ms resp. 1514 ms w/o parsing
% 5.35/2.76 % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% 5.35/2.76 thf(mu_type, type, mu: $tType).
% 5.35/2.76 thf(mnot_decl, type, mnot: (($i > $o) > ($i > $o))).
% 5.35/2.76 thf(mor_decl, type, mor: (($i > $o) > (($i > $o) > ($i > $o)))).
% 5.35/2.76 thf(mimplies_decl, type, mimplies: (($i > $o) > (($i > $o) > ($i > $o)))).
% 5.35/2.76 thf(exists_in_world_decl, type, exists_in_world: (mu > ($i > $o))).
% 5.35/2.76 thf(mreflexive_decl, type, mreflexive: (($i > ($i > $o)) > $o)).
% 5.35/2.76 thf(mtransitive_decl, type, mtransitive: (($i > ($i > $o)) > $o)).
% 5.35/2.76 thf(mvalid_decl, type, mvalid: (($i > $o) > $o)).
% 5.35/2.76 thf(rel_s4_decl, type, rel_s4: ($i > ($i > $o))).
% 5.35/2.76 thf(mbox_s4_decl, type, mbox_s4: (($i > $o) > ($i > $o))).
% 5.35/2.76 thf(mdia_s4_decl, type, mdia_s4: (($i > $o) > ($i > $o))).
% 5.35/2.76 thf(p_decl, type, p: ($i > $o)).
% 5.35/2.76 thf(mnot_def, definition, mnot = (^ [A:($i > $o),B:$i]: ~ (A @ B)) ).
% 5.35/2.76 thf(mor_def, definition, mor = (^ [A:($i > $o),B:($i > $o),C:$i]: ((A @ C) | (B @ C))) ).
% 5.35/2.76 thf(mimplies_def, definition, mimplies = (^ [A:($i > $o)]: (mor @ (mnot @ A))) ).
% 5.35/2.76 thf(mreflexive_def, definition, mreflexive = (^ [A:($i > ($i > $o))]: ! [B:$i]: (A @ B @ B)) ).
% 5.35/2.76 thf(mtransitive_def, definition, mtransitive = (^ [A:($i > ($i > $o))]: ! [B:$i,C:$i,D:$i]: (((A @ B @ C) & (A @ C @ D)) => (A @ B @ D))) ).
% 5.35/2.76 thf(mvalid_def, definition, mvalid = ((!) @ $i) ).
% 5.35/2.76 thf(mbox_s4_def, definition, mbox_s4 = (^ [A:($i > $o),B:$i]: ! [C:$i]: (~ (rel_s4 @ B @ C) | (A @ C))) ).
% 5.35/2.76 thf(mdia_s4_def, definition, mdia_s4 = (^ [A:($i > $o)]: (mnot @ (mbox_s4 @ (mnot @ A)))) ).
% 5.35/2.76 thf(5,axiom,((mtransitive @ rel_s4)),file('/export/starexec/sandbox/benchmark/theBenchmark.p',a2)).
% 5.35/2.76 thf(20,plain,((! [A:$i,B:$i,C:$i]: (((rel_s4 @ A @ B) & (rel_s4 @ B @ C)) => (rel_s4 @ A @ C)))),inference(defexp_and_simp_and_etaexpand,[status(thm)],[5])).
% 5.35/2.76 thf(6,axiom,((! [A:mu,B:$i,C:$i]: (((exists_in_world @ A @ B) & (rel_s4 @ B @ C)) => (exists_in_world @ A @ C)))),file('/export/starexec/sandbox/benchmark/theBenchmark.p',cumulative_ax)).
% 5.35/2.76 thf(22,plain,((! [A:mu,B:$i,C:$i]: (((exists_in_world @ A @ B) & (rel_s4 @ B @ C)) => (exists_in_world @ A @ C)))),inference(defexp_and_simp_and_etaexpand,[status(thm)],[6])).
% 5.35/2.76 thf(1,conjecture,((mvalid @ (mimplies @ (mdia_s4 @ (mbox_s4 @ (mdia_s4 @ (mbox_s4 @ p)))) @ (mdia_s4 @ (mbox_s4 @ p))))),file('/export/starexec/sandbox/benchmark/theBenchmark.p',con)).
% 5.35/2.76 thf(2,negated_conjecture,((~ (mvalid @ (mimplies @ (mdia_s4 @ (mbox_s4 @ (mdia_s4 @ (mbox_s4 @ p)))) @ (mdia_s4 @ (mbox_s4 @ p)))))),inference(neg_conjecture,[status(cth)],[1])).
% 5.35/2.76 thf(7,plain,((~ (! [A:$i]: (! [B:$i]: (~ (rel_s4 @ A @ B) | ~ (! [C:$i]: (~ (rel_s4 @ B @ C) | ~ (! [D:$i]: (~ (rel_s4 @ C @ D) | ~ (! [E:$i]: (~ (rel_s4 @ D @ E) | (p @ E)))))))) | ~ (! [B:$i]: (~ (rel_s4 @ A @ B) | ~ (! [C:$i]: (~ (rel_s4 @ B @ C) | (p @ C))))))))),inference(defexp_and_simp_and_etaexpand,[status(thm)],[2])).
% 5.35/2.76 thf(4,axiom,((mreflexive @ rel_s4)),file('/export/starexec/sandbox/benchmark/theBenchmark.p',a1)).
% 5.35/2.76 thf(18,plain,((! [A:$i]: (rel_s4 @ A @ A))),inference(defexp_and_simp_and_etaexpand,[status(thm)],[4])).
% 5.35/2.76 thf(3,axiom,((! [A:$i]: ? [B:mu]: (exists_in_world @ B @ A))),file('/export/starexec/sandbox/benchmark/theBenchmark.p',nonempty_ax)).
% 5.35/2.76 thf(16,plain,((! [A:$i]: ? [B:mu]: (exists_in_world @ B @ A))),inference(defexp_and_simp_and_etaexpand,[status(thm)],[3])).
% 5.35/2.76 thf(30,plain,(($false)),inference(e,[status(thm)],[20,22,7,18,16])).
% 5.35/2.76 % SZS output end Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% 5.35/2.76 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------