%------------------------------------------------------------------------------
% File : DT2H2X---1.9.5
% Problem : SYO197^5 : TPTP v9.2.1. Released v4.0.0.
% Transfm : none
% Format : tptp:raw
% Command : /export/starexec/sandbox/solver/bin/run_DT2H2X /export/starexec/sandbox/benchmark/theBenchmark.p 300
% Computer : n008.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8042.1875MB
% OS : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Wed Feb 25 09:53:38 AM UTC 2026
% Result : Theorem 1.64s 1.43s
% Output : Refutation 1.64s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12 % Problem : SYO197^5 : TPTP v9.2.1. Released v4.0.0.
% 0.12/0.13 % Command : /export/starexec/sandbox/solver/bin/run_DT2H2X /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.17/0.34 % Computer : n008.cluster.edu
% 0.17/0.34 % Model : x86_64 x86_64
% 0.17/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.17/0.34 % Memory : 8042.1875MB
% 0.17/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.17/0.34 % CPULimit : 300
% 0.17/0.34 % WCLimit : 300
% 0.17/0.34 % DateTime : Tue Feb 24 14:26:24 EST 2026
% 0.17/0.34 % CPUTime :
% 0.17/0.34 Running /export/starexec/sandbox/solver/bin/run_DT2H2X /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.19/0.47 ---- Original DTF file ---
% 0.19/0.47 thf(spec,logic,$$dhol).
% 0.19/0.47 %------------------------------------------------------------------------------
% 0.19/0.47 % File : SYO197^5 : TPTP v9.2.1. Released v4.0.0.
% 0.19/0.47 % Domain : Syntactic
% 0.19/0.47 % Problem : TPS problem CT18
% 0.19/0.47 % Version : Especial.
% 0.19/0.47 % English :
% 0.19/0.47
% 0.19/0.47 % Refs : [Bro09] Brown (2009), Email to Geoff Sutcliffe
% 0.19/0.47 % Source : [Bro09]
% 0.19/0.47 % Names : tps_0029 [Bro09]
% 0.19/0.47 % : CT18 [TPS]
% 0.19/0.47
% 0.19/0.47 % Status : Theorem
% 0.19/0.47 % Rating : 0.00 v6.2.0, 0.17 v6.0.0, 0.00 v4.0.0
% 0.19/0.47 % Syntax : Number of formulae : 1 ( 0 unt; 0 typ; 0 def)
% 0.19/0.47 % Number of atoms : 0 ( 0 equ; 0 cnn)
% 0.19/0.47 % Maximal formula atoms : 0 ( 0 avg)
% 0.19/0.47 % Number of connectives : 1 ( 0 ~; 0 |; 0 &; 0 @)
% 0.19/0.47 % ( 0 <=>; 1 =>; 0 <=; 0 <~>)
% 0.19/0.47 % Maximal formula depth : 5 ( 5 avg)
% 0.19/0.47 % Number of types : 1 ( 0 usr)
% 0.19/0.47 % Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% 0.19/0.47 % Number of symbols : 0 ( 0 usr; 0 con; --- aty)
% 0.19/0.47 % Number of variables : 3 ( 0 ^; 1 !; 2 ?; 3 :)
% 0.19/0.47 % SPC : TH0_THM_NEQ_NAR
% 0.19/0.47
% 0.19/0.47 % Comments : This problem is from the TPS library. Copyright (c) 2009 The TPS
% 0.19/0.47 % project in the Department of Mathematical Sciences at Carnegie
% 0.19/0.47 % Mellon University. Distributed under the Creative Commons copyleft
% 0.19/0.47 % license: http://creativecommons.org/licenses/by-sa/3.0/
% 0.19/0.47 %------------------------------------------------------------------------------
% 0.19/0.47 thf(cCT18,conjecture,
% 0.19/0.47 ? [Xy: $o] :
% 0.19/0.47 ! [Xz: $o] :
% 0.19/0.47 ? [Xx: $o] :
% 0.19/0.47 ( Xz
% 0.19/0.47 => Xx ) ).
% 0.19/0.47
% 0.19/0.47 %------------------------------------------------------------------------------
% 0.19/0.47 ------------------------
% 1.45/1.40 ---- Embedded in THF ---
% 1.64/1.40 %%% This output was generated by embedproblem, version 1.9.5 (library version 1.9).
% 1.64/1.40 %%% Generated on Tue Feb 24 14:26:25 EST 2026
% 1.64/1.40 %%% using '$$dhol' embedding, version 1.3.0.
% 1.64/1.40 %%% Logic specification used:
% 1.64/1.40 %%% thf(spec, logic, $$dhol).
% 1.64/1.40
% 1.64/1.40 % SZS output start ListOfTHF for /export/starexec/sandbox/tmp/tmp.wYWitoD8Er/DTF2DTF29694.p
% 1.64/1.40 thf(cCT18, conjecture, (? [Xy:$o]: ((! [Xz:$o]: ((? [Xx:$o]: ((Xz => Xx)))))))).
% 1.64/1.40 % SZS output end ListOfTHF for /export/starexec/sandbox/tmp/tmp.wYWitoD8Er/DTF2DTF29694.p
% 1.64/1.40 ------------------------
% 1.64/1.40 ---- Cleaned THF ---
% 1.64/1.41 thf(cCT18,conjecture,
% 1.64/1.41 ? [Xy: $o] :
% 1.64/1.41 ! [Xz: $o] :
% 1.64/1.41 ? [Xx: $o] :
% 1.64/1.41 ( Xz
% 1.64/1.41 => Xx ) ).
% 1.64/1.41 ------------------------
% 1.64/1.43 % (29796)lrs+1002_1:128_aac=none:au=on:cnfonf=lazy_not_gen_be_off:sos=all:i=2:si=on:rtra=on_0 on DTF2THF_29694 for (3000ds/2Mi)
% 1.64/1.43 % (29793)lrs+10_1:1_c=on:cnfonf=conj_eager:fd=off:fe=off:kws=frequency:spb=intro:i=4:si=on:rtra=on_0 on DTF2THF_29694 for (3000ds/4Mi)
% 1.64/1.43 % (29794)dis+1010_1:1_au=on:cbe=off:chr=on:fsr=off:hfsq=on:nm=64:sos=theory:sp=weighted_frequency:i=27:si=on:rtra=on_0 on DTF2THF_29694 for (3000ds/27Mi)
% 1.64/1.43 % (29792)lrs+1002_1:8_bd=off:fd=off:hud=10:tnu=1:i=183:si=on:rtra=on_0 on DTF2THF_29694 for (3000ds/183Mi)
% 1.64/1.43 % (29795)lrs+10_1:1_au=on:inj=on:i=2:si=on:rtra=on_0 on DTF2THF_29694 for (3000ds/2Mi)
% 1.64/1.43 % (29797)lrs+1002_1:1_au=on:bd=off:e2e=on:sd=2:sos=on:ss=axioms:i=275:si=on:rtra=on_0 on DTF2THF_29694 for (3000ds/275Mi)
% 1.64/1.43 % (29798)lrs+1004_1:128_cond=on:e2e=on:sp=weighted_frequency:i=18:si=on:rtra=on_0 on DTF2THF_29694 for (3000ds/18Mi)
% 1.64/1.43 % (29797)First to succeed.
% 1.64/1.43 % (29792)Also succeeded, but the first one will report.
% 1.64/1.43 % (29798)Also succeeded, but the first one will report.
% 1.64/1.43 % (29797)Refutation found. Thanks to Tanya!
% 1.64/1.43 % SZS status Theorem for DTF2THF_29694
% 1.64/1.43 % SZS output start Proof for DTF2THF_29694
% 1.64/1.43 fof(f13,plain,(
% 1.64/1.43 $false),
% 1.64/1.43 inference(equality_resolution,[status(thm)],[f11])).
% 1.64/1.43 fof(f11,plain,(
% 1.64/1.43 ( ! [X1] : (($true != X1)) )),
% 1.64/1.43 inference(cnf_transformation,[status(thm)],[f10])).
% 1.64/1.43 fof(f10,plain,(
% 1.64/1.43 ! [X1 : $o] : ((sK0 = $true) & ($true != X1))),
% 1.64/1.43 inference(skolemisation,[status(esa),new_symbols(skolem,[sK0])],[f8,f9])).
% 1.64/1.43 fof(f9,plain,(
% 1.64/1.43 ? [X0 : $o] : ! [X1 : $o] : (($true = X0) & ($true != X1)) => ! [X1 : $o] : ((sK0 = $true) & ($true != X1))),
% 1.64/1.43 introduced(definition,[],[choice_axiom])).
% 1.64/1.43 fof(f8,plain,(
% 1.64/1.43 ? [X0 : $o] : ! [X1 : $o] : (($true = X0) & ($true != X1))),
% 1.64/1.43 inference(ennf_transformation,[status(thm)],[f7])).
% 1.64/1.43 fof(f7,plain,(
% 1.64/1.43 ~! [X0 : $o] : ? [X1 : $o] : (($true = X0) => ($true = X1))),
% 1.64/1.43 inference(rectify,[status(thm)],[f6])).
% 1.64/1.43 fof(f6,plain,(
% 1.64/1.43 ~! [X1 : $o] : ? [X2 : $o] : (($true = X1) => ($true = X2))),
% 1.64/1.43 inference(fool_elimination,[status(thm)],[f5])).
% 1.64/1.43 fof(f5,plain,(
% 1.64/1.43 ~! [X1 : $o] : ? [X2 : $o] : (X1 => X2)),
% 1.64/1.43 inference(rectify,[status(thm)],[f2])).
% 1.64/1.43 fof(f2,negated_conjecture,(
% 1.64/1.43 ~? [X0 : $o] : ! [X1 : $o] : ? [X2 : $o] : (X1 => X2)),
% 1.64/1.43 inference(negated_conjecture,[status(cth)],[f1])).
% 1.64/1.43 fof(f1,conjecture,(
% 1.64/1.43 ? [X0 : $o] : ! [X1 : $o] : ? [X2 : $o] : (X1 => X2)),
% 1.64/1.43 file('/export/starexec/sandbox/tmp/tmp.wYWitoD8Er/DTF2THF_29694.p',cCT18)).
% 1.64/1.43 % SZS output end Proof for DTF2THF_29694
% 1.64/1.43 % (29797)------------------------------
% 1.64/1.43 % (29797)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.43 % (29797)Termination reason: Refutation
% 1.64/1.43
% 1.64/1.43 % (29797)Memory used [KB]: 5373
% 1.64/1.43 % (29797)Time elapsed: 0.003 s
% 1.64/1.43 % (29797)Instructions burned: 1 (million)
% 1.64/1.43 % (29797)------------------------------
% 1.64/1.43 % (29797)------------------------------
% 1.64/1.43 % (29791)Success in time 0.018 s
%------------------------------------------------------------------------------