TSTP Solution File: GRP542-1 by Vampire---4.8

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%------------------------------------------------------------------------------
% File     : Vampire---4.8
% Problem  : GRP542-1 : TPTP v8.1.2. Released v2.6.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : vampire --ignore_missing on --mode portfolio/casc [--schedule casc_hol_2020] -p tptp -om szs -t %d %s

% 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 : Thu Aug 31 01:25:48 EDT 2023

% Result   : Unsatisfiable 0.21s 0.43s
% Output   : Refutation 0.21s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    5
%            Number of leaves      :    5
% Syntax   : Number of formulae    :   12 (  12 unt;   0 def)
%            Number of atoms       :   12 (  11 equ)
%            Maximal formula atoms :    1 (   1 avg)
%            Number of connectives :    4 (   4   ~;   0   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    4 (   2 avg)
%            Maximal term depth    :    6 (   2 avg)
%            Number of predicates  :    2 (   0 usr;   1 prp; 0-2 aty)
%            Number of functors    :    6 (   6 usr;   3 con; 0-2 aty)
%            Number of variables   :   11 (;  11   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f32,plain,
    $false,
    inference(trivial_inequality_removal,[],[f29]) ).

fof(f29,plain,
    a2 != a2,
    inference(backward_demodulation,[],[f7,f28]) ).

fof(f28,plain,
    ! [X0] : divide(identity,divide(identity,X0)) = X0,
    inference(forward_demodulation,[],[f20,f4]) ).

fof(f4,axiom,
    ! [X0] : identity = divide(X0,X0),
    file('/export/starexec/sandbox2/tmp/tmp.pKOa7uHtuO/Vampire---4.8_6526',identity) ).

fof(f20,plain,
    ! [X0] : divide(divide(identity,identity),divide(identity,X0)) = X0,
    inference(superposition,[],[f11,f4]) ).

fof(f11,plain,
    ! [X3,X4] : divide(divide(identity,divide(identity,X3)),divide(X3,X4)) = X4,
    inference(superposition,[],[f1,f4]) ).

fof(f1,axiom,
    ! [X2,X0,X1] : divide(divide(identity,divide(divide(divide(X0,X1),X2),X0)),X2) = X1,
    file('/export/starexec/sandbox2/tmp/tmp.pKOa7uHtuO/Vampire---4.8_6526',single_axiom) ).

fof(f7,plain,
    a2 != divide(identity,divide(identity,a2)),
    inference(backward_demodulation,[],[f6,f4]) ).

fof(f6,plain,
    a2 != divide(divide(divide(identity,b2),divide(identity,b2)),divide(identity,a2)),
    inference(definition_unfolding,[],[f5,f2,f2,f3]) ).

fof(f3,axiom,
    ! [X0] : inverse(X0) = divide(identity,X0),
    file('/export/starexec/sandbox2/tmp/tmp.pKOa7uHtuO/Vampire---4.8_6526',inverse) ).

fof(f2,axiom,
    ! [X0,X1] : multiply(X0,X1) = divide(X0,divide(identity,X1)),
    file('/export/starexec/sandbox2/tmp/tmp.pKOa7uHtuO/Vampire---4.8_6526',multiply) ).

fof(f5,axiom,
    a2 != multiply(multiply(inverse(b2),b2),a2),
    file('/export/starexec/sandbox2/tmp/tmp.pKOa7uHtuO/Vampire---4.8_6526',prove_these_axioms_2) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.13  % Problem    : GRP542-1 : TPTP v8.1.2. Released v2.6.0.
% 0.00/0.14  % Command    : vampire --ignore_missing on --mode portfolio/casc [--schedule casc_hol_2020] -p tptp -om szs -t %d %s
% 0.15/0.35  % Computer : n008.cluster.edu
% 0.15/0.35  % Model    : x86_64 x86_64
% 0.15/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.35  % Memory   : 8042.1875MB
% 0.15/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.15/0.36  % CPULimit   : 300
% 0.15/0.36  % WCLimit    : 300
% 0.15/0.36  % DateTime   : Tue Aug 29 01:27:02 EDT 2023
% 0.15/0.36  % CPUTime    : 
% 0.15/0.36  This is a CNF_UNS_RFO_PEQ_UEQ problem
% 0.15/0.36  Running vampire_casc2023 --mode casc -m 16384 --cores 7 -t 300 /export/starexec/sandbox2/tmp/tmp.pKOa7uHtuO/Vampire---4.8_6526
% 0.15/0.36  % (6646)Running in auto input_syntax mode. Trying TPTP
% 0.21/0.42  % (6652)ott+10_64_av=off:bd=preordered:drc=off:fde=unused:sims=off:sp=reverse_arity:tgt=ground_392 on Vampire---4 for (392ds/0Mi)
% 0.21/0.42  % (6650)lrs+10_10_av=off:bd=off:fde=unused:nwc=4.0:sims=off:sp=occurrence:to=lpo:stl=125_468 on Vampire---4 for (468ds/0Mi)
% 0.21/0.42  % (6649)lrs+10_64_av=off:drc=off:nwc=1.1:sims=off:stl=125_839 on Vampire---4 for (839ds/0Mi)
% 0.21/0.42  % (6648)dis+10_40_av=off:bd=preordered:drc=off:nwc=1.3:sp=scramble:tgt=ground_1117 on Vampire---4 for (1117ds/0Mi)
% 0.21/0.42  % (6647)dis+10_2_av=off:bd=preordered:drc=off:nwc=1.2:sims=off:sp=reverse_frequency:to=lpo:tgt=ground_1169 on Vampire---4 for (1169ds/0Mi)
% 0.21/0.42  % (6649)First to succeed.
% 0.21/0.42  % (6650)Also succeeded, but the first one will report.
% 0.21/0.42  % (6651)dis+10_5:4_av=off:bd=off:drc=off:fde=unused:nwc=1.5:sims=off:to=lpo:tgt=ground_445 on Vampire---4 for (445ds/0Mi)
% 0.21/0.43  % (6647)Also succeeded, but the first one will report.
% 0.21/0.43  % (6649)Refutation found. Thanks to Tanya!
% 0.21/0.43  % SZS status Unsatisfiable for Vampire---4
% 0.21/0.43  % SZS output start Proof for Vampire---4
% See solution above
% 0.21/0.43  % (6649)------------------------------
% 0.21/0.43  % (6649)Version: Vampire 4.7 (commit 05ef610bd on 2023-06-21 19:03:17 +0100)
% 0.21/0.43  % (6649)Linked with Z3 4.9.1.0 6ed071b44407cf6623b8d3c0dceb2a8fb7040cee z3-4.8.4-6427-g6ed071b44
% 0.21/0.43  % (6649)Termination reason: Refutation
% 0.21/0.43  
% 0.21/0.43  % (6649)Memory used [KB]: 895
% 0.21/0.43  % (6649)Time elapsed: 0.005 s
% 0.21/0.43  % (6649)------------------------------
% 0.21/0.43  % (6649)------------------------------
% 0.21/0.43  % (6646)Success in time 0.062 s
% 0.21/0.43  % Vampire---4.8 exiting
%------------------------------------------------------------------------------