TSTP Solution File: LAT239-1 by Drodi---3.5.1

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Drodi---3.5.1
% Problem  : LAT239-1 : TPTP v8.1.2. Released v3.1.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s

% Computer : n015.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 May 31 12:17:07 EDT 2023

% Result   : Unsatisfiable 151.33s 19.53s
% Output   : CNFRefutation 153.30s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   26
%            Number of leaves      :   15
% Syntax   : Number of formulae    :  108 (  97 unt;   0 def)
%            Number of atoms       :  121 ( 107 equ)
%            Maximal formula atoms :    3 (   1 avg)
%            Number of connectives :   26 (  13   ~;  11   |;   0   &)
%                                         (   2 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    6 (   3 avg)
%            Maximal term depth    :    8 (   2 avg)
%            Number of predicates  :    4 (   2 usr;   3 prp; 0-2 aty)
%            Number of functors    :    7 (   7 usr;   4 con; 0-2 aty)
%            Number of variables   :  228 (; 228   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f2,axiom,
    ! [X] : join(X,X) = X,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f3,axiom,
    ! [X,Y] : meet(X,join(X,Y)) = X,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f4,axiom,
    ! [X,Y] : join(X,meet(X,Y)) = X,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f5,axiom,
    ! [X,Y] : meet(X,Y) = meet(Y,X),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f6,axiom,
    ! [X,Y] : join(X,Y) = join(Y,X),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f7,axiom,
    ! [X,Y,Z] : meet(meet(X,Y),Z) = meet(X,meet(Y,Z)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f8,axiom,
    ! [X,Y,Z] : join(join(X,Y),Z) = join(X,join(Y,Z)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f9,axiom,
    ! [X] : join(X,complement(X)) = one,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f10,axiom,
    ! [X] : meet(X,complement(X)) = zero,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f11,axiom,
    ! [X,Y] :
      ( meet(X,Y) != zero
      | join(X,Y) != one
      | complement(X) = Y ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f12,axiom,
    ! [X,Y,Z,U] : meet(X,join(Y,meet(Z,join(X,U)))) = meet(X,join(Y,join(meet(X,Z),meet(Z,join(Y,U))))),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f13,hypothesis,
    meet(b,a) = a,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f14,negated_conjecture,
    join(complement(b),complement(a)) != complement(a),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f16,plain,
    ! [X0] : join(X0,X0) = X0,
    inference(cnf_transformation,[status(esa)],[f2]) ).

fof(f17,plain,
    ! [X0,X1] : meet(X0,join(X0,X1)) = X0,
    inference(cnf_transformation,[status(esa)],[f3]) ).

fof(f18,plain,
    ! [X0,X1] : join(X0,meet(X0,X1)) = X0,
    inference(cnf_transformation,[status(esa)],[f4]) ).

fof(f19,plain,
    ! [X0,X1] : meet(X0,X1) = meet(X1,X0),
    inference(cnf_transformation,[status(esa)],[f5]) ).

fof(f20,plain,
    ! [X0,X1] : join(X0,X1) = join(X1,X0),
    inference(cnf_transformation,[status(esa)],[f6]) ).

fof(f21,plain,
    ! [X0,X1,X2] : meet(meet(X0,X1),X2) = meet(X0,meet(X1,X2)),
    inference(cnf_transformation,[status(esa)],[f7]) ).

fof(f22,plain,
    ! [X0,X1,X2] : join(join(X0,X1),X2) = join(X0,join(X1,X2)),
    inference(cnf_transformation,[status(esa)],[f8]) ).

fof(f23,plain,
    ! [X0] : join(X0,complement(X0)) = one,
    inference(cnf_transformation,[status(esa)],[f9]) ).

fof(f24,plain,
    ! [X0] : meet(X0,complement(X0)) = zero,
    inference(cnf_transformation,[status(esa)],[f10]) ).

fof(f25,plain,
    ! [X0,X1] :
      ( meet(X0,X1) != zero
      | join(X0,X1) != one
      | complement(X0) = X1 ),
    inference(cnf_transformation,[status(esa)],[f11]) ).

fof(f26,plain,
    ! [X0,X1,X2,X3] : meet(X0,join(X1,meet(X2,join(X0,X3)))) = meet(X0,join(X1,join(meet(X0,X2),meet(X2,join(X1,X3))))),
    inference(cnf_transformation,[status(esa)],[f12]) ).

fof(f27,plain,
    meet(b,a) = a,
    inference(cnf_transformation,[status(esa)],[f13]) ).

fof(f28,plain,
    join(complement(b),complement(a)) != complement(a),
    inference(cnf_transformation,[status(esa)],[f14]) ).

fof(f32,plain,
    ! [X0,X1] : meet(X0,join(X1,X0)) = X0,
    inference(paramodulation,[status(thm)],[f20,f17]) ).

fof(f34,plain,
    ! [X0,X1,X2] : join(X0,X1) = join(X0,join(X1,meet(join(X0,X1),X2))),
    inference(paramodulation,[status(thm)],[f18,f22]) ).

fof(f35,plain,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(X1,join(X2,X0)),
    inference(paramodulation,[status(thm)],[f20,f22]) ).

fof(f42,plain,
    ! [X0,X1,X2] : join(join(X0,X1),X2) = join(X1,join(X0,X2)),
    inference(paramodulation,[status(thm)],[f20,f22]) ).

fof(f43,plain,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(X1,join(X0,X2)),
    inference(forward_demodulation,[status(thm)],[f22,f42]) ).

fof(f46,plain,
    ! [X0,X1] : join(X0,X1) = join(X0,join(X0,X1)),
    inference(paramodulation,[status(thm)],[f16,f22]) ).

fof(f50,plain,
    ! [X0,X1,X2] : meet(join(X0,X1),join(X0,join(X1,X2))) = join(X0,X1),
    inference(paramodulation,[status(thm)],[f22,f17]) ).

fof(f54,plain,
    ! [X0,X1] : meet(meet(X0,X1),X0) = meet(X0,X1),
    inference(paramodulation,[status(thm)],[f18,f32]) ).

fof(f55,plain,
    ! [X0,X1] : meet(X0,meet(X1,X0)) = meet(X0,X1),
    inference(forward_demodulation,[status(thm)],[f21,f54]) ).

fof(f68,plain,
    ! [X0,X1] : join(X0,X1) = join(X0,join(X1,X0)),
    inference(paramodulation,[status(thm)],[f20,f46]) ).

fof(f104,plain,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(X0,join(X1,join(X2,X0))),
    inference(paramodulation,[status(thm)],[f22,f68]) ).

fof(f124,plain,
    ! [X0,X1,X2] : join(join(X0,X1),X2) = join(X0,join(join(X1,X0),X2)),
    inference(paramodulation,[status(thm)],[f68,f22]) ).

fof(f125,plain,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(X0,join(join(X1,X0),X2)),
    inference(forward_demodulation,[status(thm)],[f22,f124]) ).

fof(f126,plain,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(X0,join(X1,join(X0,X2))),
    inference(forward_demodulation,[status(thm)],[f22,f125]) ).

fof(f169,plain,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(X2,join(X1,X0)),
    inference(paramodulation,[status(thm)],[f20,f35]) ).

fof(f241,plain,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(X0,join(X2,join(X0,X1))),
    inference(paramodulation,[status(thm)],[f35,f46]) ).

fof(f242,plain,
    ! [X0,X1,X2] : join(X0,join(X1,X2)) = join(X0,join(X2,X1)),
    inference(forward_demodulation,[status(thm)],[f126,f241]) ).

fof(f243,plain,
    ! [X0,X1,X2] : meet(join(X0,X1),join(X1,join(X2,X0))) = join(X0,X1),
    inference(paramodulation,[status(thm)],[f35,f32]) ).

fof(f448,plain,
    ! [X0,X1,X2,X3,X4] : meet(X0,join(join(X1,X2),meet(X3,join(X0,X4)))) = meet(X0,join(X1,join(X2,join(meet(X0,X3),meet(X3,join(join(X1,X2),X4)))))),
    inference(paramodulation,[status(thm)],[f22,f26]) ).

fof(f449,plain,
    ! [X0,X1,X2,X3,X4] : meet(X0,join(X1,join(X2,meet(X3,join(X0,X4))))) = meet(X0,join(X1,join(X2,join(meet(X0,X3),meet(X3,join(join(X1,X2),X4)))))),
    inference(forward_demodulation,[status(thm)],[f22,f448]) ).

fof(f450,plain,
    ! [X0,X1,X2,X3,X4] : meet(X0,join(X1,join(X2,meet(X3,join(X0,X4))))) = meet(X0,join(X1,join(X2,join(meet(X0,X3),meet(X3,join(X1,join(X2,X4))))))),
    inference(forward_demodulation,[status(thm)],[f22,f449]) ).

fof(f507,plain,
    ! [X0,X1,X2,X3] : meet(X0,join(X1,meet(X2,join(X0,X3)))) = meet(X0,join(X1,join(meet(X0,X2),meet(X2,join(X3,X1))))),
    inference(paramodulation,[status(thm)],[f20,f26]) ).

fof(f526,plain,
    ! [X0,X1,X2] : join(X0,X1) = join(X1,join(X0,meet(join(X0,X1),X2))),
    inference(paramodulation,[status(thm)],[f43,f34]) ).

fof(f641,plain,
    ! [X0,X1] : join(X0,meet(X1,X0)) = X0,
    inference(paramodulation,[status(thm)],[f19,f18]) ).

fof(f674,plain,
    ! [X0] : meet(X0,one) = X0,
    inference(paramodulation,[status(thm)],[f23,f17]) ).

fof(f687,plain,
    ! [X0] : meet(one,X0) = X0,
    inference(paramodulation,[status(thm)],[f19,f674]) ).

fof(f847,plain,
    ! [X0] : join(X0,zero) = X0,
    inference(paramodulation,[status(thm)],[f24,f18]) ).

fof(f852,plain,
    ! [X0] : join(zero,X0) = X0,
    inference(paramodulation,[status(thm)],[f20,f847]) ).

fof(f874,plain,
    ! [X0] : meet(zero,X0) = zero,
    inference(paramodulation,[status(thm)],[f847,f32]) ).

fof(f991,plain,
    ! [X0,X1] : join(meet(X0,X1),meet(X1,X0)) = meet(X0,X1),
    inference(paramodulation,[status(thm)],[f55,f641]) ).

fof(f1058,plain,
    ! [X0] : meet(a,X0) = meet(b,meet(a,X0)),
    inference(paramodulation,[status(thm)],[f27,f21]) ).

fof(f1062,plain,
    ! [X0,X1] : meet(zero,X0) = meet(X1,meet(complement(X1),X0)),
    inference(paramodulation,[status(thm)],[f24,f21]) ).

fof(f1063,plain,
    ! [X0,X1] : zero = meet(X0,meet(complement(X0),X1)),
    inference(forward_demodulation,[status(thm)],[f874,f1062]) ).

fof(f1094,plain,
    ! [X0,X1,X2] : join(X0,meet(X1,meet(X2,X0))) = X0,
    inference(paramodulation,[status(thm)],[f21,f641]) ).

fof(f1106,plain,
    ( spl0_0
  <=> meet(a,join(complement(b),complement(a))) = zero ),
    introduced(split_symbol_definition) ).

fof(f1108,plain,
    ( meet(a,join(complement(b),complement(a))) != zero
    | spl0_0 ),
    inference(component_clause,[status(thm)],[f1106]) ).

fof(f1109,plain,
    ( spl0_1
  <=> join(a,join(complement(b),complement(a))) = one ),
    introduced(split_symbol_definition) ).

fof(f1111,plain,
    ( join(a,join(complement(b),complement(a))) != one
    | spl0_1 ),
    inference(component_clause,[status(thm)],[f1109]) ).

fof(f1112,plain,
    ( meet(a,join(complement(b),complement(a))) != zero
    | join(a,join(complement(b),complement(a))) != one ),
    inference(resolution,[status(thm)],[f25,f28]) ).

fof(f1113,plain,
    ( ~ spl0_0
    | ~ spl0_1 ),
    inference(split_clause,[status(thm)],[f1112,f1106,f1109]) ).

fof(f1129,plain,
    ! [X0,X1] : meet(one,join(X0,join(complement(X0),X1))) = join(X0,complement(X0)),
    inference(paramodulation,[status(thm)],[f23,f50]) ).

fof(f1130,plain,
    ! [X0,X1] : join(X0,join(complement(X0),X1)) = join(X0,complement(X0)),
    inference(forward_demodulation,[status(thm)],[f687,f1129]) ).

fof(f1131,plain,
    ! [X0,X1] : join(X0,join(complement(X0),X1)) = one,
    inference(forward_demodulation,[status(thm)],[f23,f1130]) ).

fof(f1156,plain,
    ! [X0,X1,X2] : meet(join(X0,X1),join(X1,join(X0,X2))) = join(X1,X0),
    inference(paramodulation,[status(thm)],[f20,f50]) ).

fof(f1366,plain,
    ! [X0,X1] : zero = meet(X0,meet(X1,complement(X0))),
    inference(paramodulation,[status(thm)],[f19,f1063]) ).

fof(f1524,plain,
    ! [X0,X1] : join(X0,join(X1,complement(X0))) = one,
    inference(paramodulation,[status(thm)],[f20,f1131]) ).

fof(f2221,plain,
    ! [X0,X1,X2,X3] : join(X0,join(X1,join(X2,X3))) = join(X0,join(X3,join(X1,X2))),
    inference(paramodulation,[status(thm)],[f22,f242]) ).

fof(f2920,plain,
    ! [X0,X1,X2] : join(X0,join(meet(X1,X2),meet(X2,X1))) = join(X0,meet(X2,X1)),
    inference(paramodulation,[status(thm)],[f991,f242]) ).

fof(f2921,plain,
    ! [X0,X1,X2] : join(X0,meet(X1,X2)) = join(X0,meet(X2,X1)),
    inference(forward_demodulation,[status(thm)],[f991,f2920]) ).

fof(f3821,plain,
    meet(a,complement(b)) = zero,
    inference(paramodulation,[status(thm)],[f1366,f1058]) ).

fof(f5725,plain,
    ! [X0,X1,X2,X3] : join(join(X0,X1),join(X2,X3)) = join(join(X0,X1),join(X2,join(X1,join(X0,X3)))),
    inference(paramodulation,[status(thm)],[f169,f104]) ).

fof(f5726,plain,
    ! [X0,X1,X2,X3] : join(X0,join(X1,join(X2,X3))) = join(join(X0,X1),join(X2,join(X1,join(X0,X3)))),
    inference(forward_demodulation,[status(thm)],[f22,f5725]) ).

fof(f5727,plain,
    ! [X0,X1,X2,X3] : join(X0,join(X1,join(X2,X3))) = join(X0,join(X1,join(X2,join(X1,join(X0,X3))))),
    inference(forward_demodulation,[status(thm)],[f22,f5726]) ).

fof(f5728,plain,
    ! [X0,X1,X2,X3] : join(X0,join(X1,join(X2,X3))) = join(X0,join(X1,join(X2,join(X0,X3)))),
    inference(forward_demodulation,[status(thm)],[f126,f5727]) ).

fof(f7044,plain,
    ! [X0,X1,X2,X3] : join(join(X0,join(X1,X2)),meet(X3,join(X2,X0))) = join(X0,join(X1,X2)),
    inference(paramodulation,[status(thm)],[f243,f1094]) ).

fof(f7045,plain,
    ! [X0,X1,X2,X3] : join(X0,join(join(X1,X2),meet(X3,join(X2,X0)))) = join(X0,join(X1,X2)),
    inference(forward_demodulation,[status(thm)],[f22,f7044]) ).

fof(f7046,plain,
    ! [X0,X1,X2,X3] : join(X0,join(X1,join(X2,meet(X3,join(X2,X0))))) = join(X0,join(X1,X2)),
    inference(forward_demodulation,[status(thm)],[f22,f7045]) ).

fof(f9345,plain,
    ! [X0,X1,X2,X3] : meet(X0,join(X1,join(X2,meet(join(X2,X1),join(X0,X3))))) = meet(X0,join(X1,join(X2,join(meet(X0,join(X2,X1)),join(X1,X2))))),
    inference(paramodulation,[status(thm)],[f1156,f450]) ).

fof(f9346,plain,
    ! [X0,X1,X2] : meet(X0,join(X1,X2)) = meet(X0,join(X2,join(X1,join(meet(X0,join(X1,X2)),join(X2,X1))))),
    inference(forward_demodulation,[status(thm)],[f526,f9345]) ).

fof(f9347,plain,
    ! [X0,X1,X2] : meet(X0,join(X1,X2)) = meet(X0,join(X2,join(X1,join(meet(X0,join(X1,X2)),X1)))),
    inference(forward_demodulation,[status(thm)],[f5728,f9346]) ).

fof(f9348,plain,
    ! [X0,X1,X2] : meet(X0,join(X1,X2)) = meet(X0,join(X2,join(X1,join(X1,meet(X0,join(X1,X2)))))),
    inference(forward_demodulation,[status(thm)],[f2221,f9347]) ).

fof(f9349,plain,
    ! [X0,X1,X2] : meet(X0,join(X1,X2)) = meet(X0,join(X2,join(X1,X1))),
    inference(forward_demodulation,[status(thm)],[f7046,f9348]) ).

fof(f9350,plain,
    ! [X0,X1,X2] : meet(X0,join(X1,X2)) = meet(X0,join(X2,X1)),
    inference(forward_demodulation,[status(thm)],[f16,f9349]) ).

fof(f9505,plain,
    ! [X0,X1,X2,X3] : meet(X0,join(X1,join(X2,X3))) = meet(X0,join(join(X1,X3),X2)),
    inference(paramodulation,[status(thm)],[f43,f9350]) ).

fof(f9506,plain,
    ! [X0,X1,X2,X3] : meet(X0,join(X1,join(X2,X3))) = meet(X0,join(X1,join(X3,X2))),
    inference(forward_demodulation,[status(thm)],[f22,f9505]) ).

fof(f16354,plain,
    ! [X0,X1,X2] : meet(X0,join(complement(X1),meet(X2,join(X0,X1)))) = meet(X0,join(complement(X1),join(meet(X0,X2),meet(X2,one)))),
    inference(paramodulation,[status(thm)],[f23,f507]) ).

fof(f16355,plain,
    ! [X0,X1,X2] : meet(X0,join(complement(X1),meet(X2,join(X0,X1)))) = meet(X0,join(complement(X1),join(meet(X0,X2),X2))),
    inference(forward_demodulation,[status(thm)],[f674,f16354]) ).

fof(f16356,plain,
    ! [X0,X1,X2] : meet(X0,join(complement(X1),meet(X2,join(X0,X1)))) = meet(X0,join(complement(X1),join(X2,meet(X0,X2)))),
    inference(forward_demodulation,[status(thm)],[f9506,f16355]) ).

fof(f16357,plain,
    ! [X0,X1,X2] : meet(X0,join(complement(X1),meet(X2,join(X0,X1)))) = meet(X0,join(complement(X1),X2)),
    inference(forward_demodulation,[status(thm)],[f641,f16356]) ).

fof(f50214,plain,
    ! [X0,X1] : meet(X0,join(complement(X0),meet(X1,X0))) = meet(X0,join(complement(X0),X1)),
    inference(paramodulation,[status(thm)],[f16,f16357]) ).

fof(f50421,plain,
    ! [X0,X1] : meet(X0,join(complement(X0),meet(X0,X1))) = meet(X0,join(complement(X0),X1)),
    inference(paramodulation,[status(thm)],[f2921,f50214]) ).

fof(f51009,plain,
    meet(a,join(complement(a),zero)) = meet(a,join(complement(a),complement(b))),
    inference(paramodulation,[status(thm)],[f3821,f50421]) ).

fof(f51010,plain,
    meet(a,join(zero,complement(a))) = meet(a,join(complement(a),complement(b))),
    inference(forward_demodulation,[status(thm)],[f9350,f51009]) ).

fof(f51011,plain,
    meet(a,complement(a)) = meet(a,join(complement(a),complement(b))),
    inference(forward_demodulation,[status(thm)],[f852,f51010]) ).

fof(f51012,plain,
    zero = meet(a,join(complement(a),complement(b))),
    inference(forward_demodulation,[status(thm)],[f24,f51011]) ).

fof(f51013,plain,
    zero = meet(a,join(complement(b),complement(a))),
    inference(forward_demodulation,[status(thm)],[f9350,f51012]) ).

fof(f51014,plain,
    ( $false
    | spl0_0 ),
    inference(forward_subsumption_resolution,[status(thm)],[f51013,f1108]) ).

fof(f51015,plain,
    spl0_0,
    inference(contradiction_clause,[status(thm)],[f51014]) ).

fof(f51450,plain,
    ( one != one
    | spl0_1 ),
    inference(forward_demodulation,[status(thm)],[f1524,f1111]) ).

fof(f51451,plain,
    ( $false
    | spl0_1 ),
    inference(trivial_equality_resolution,[status(esa)],[f51450]) ).

fof(f51452,plain,
    spl0_1,
    inference(contradiction_clause,[status(thm)],[f51451]) ).

fof(f51453,plain,
    $false,
    inference(sat_refutation,[status(thm)],[f1113,f51015,f51452]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.09/0.10  % Problem  : LAT239-1 : TPTP v8.1.2. Released v3.1.0.
% 0.09/0.10  % Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s
% 0.10/0.30  % Computer : n015.cluster.edu
% 0.10/0.30  % Model    : x86_64 x86_64
% 0.10/0.30  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.30  % Memory   : 8042.1875MB
% 0.10/0.30  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.10/0.30  % CPULimit : 300
% 0.10/0.30  % WCLimit  : 300
% 0.10/0.30  % DateTime : Tue May 30 09:37:04 EDT 2023
% 0.10/0.30  % CPUTime  : 
% 0.10/0.31  % Drodi V3.5.1
% 151.33/19.53  % Refutation found
% 151.33/19.53  % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 151.33/19.53  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 154.11/19.83  % Elapsed time: 19.505808 seconds
% 154.11/19.83  % CPU time: 153.552895 seconds
% 154.11/19.83  % Memory used: 832.906 MB
%------------------------------------------------------------------------------