Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:03:43 2013

Optimize a model with 2140 rows, 7020 columns and 18010 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.18s
Presolved: 2120 rows, 6990 columns, 13980 nonzeros
Variable types: 5000 continuous, 1990 integer (1990 binary)

Root relaxation: objective 1.937272e+04, 102 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 19372.7157    0    2          - 19372.7157     -      -    0s
     0     0 19373.9669    0    4          - 19373.9669     -      -    0s
     0     0 19374.0651    0    4          - 19374.0651     -      -    0s
     0     0 19374.0651    0    4          - 19374.0651     -      -    0s
     0     2 19374.6735    0    4          - 19374.6735     -      -    0s
*  280   149             276    19603.258611 19447.4179  0.79%   2.3    1s
*  283   143             274    19603.209824 19447.4179  0.79%   2.3    1s
H  362   172                    19559.027214 19447.8183  0.57%   2.1    1s
*  368   175              95    19556.795270 19447.8183  0.56%   2.1    1s
*  370   172              95    19556.442575 19447.8183  0.56%   2.1    1s
*  539   319              92    19553.291867 19448.8248  0.53%   1.8    1s
* 1418   303              30    19514.233892 19491.9340  0.11%   2.2    3s
* 1421   275              30    19513.742915 19491.9340  0.11%   2.2    3s
  2113   202 19506.6122   53    2 19513.7429 19504.0304  0.05%   2.2    5s

Cutting planes:
  Gomory: 2
  Flow cover: 2

Explored 3060 nodes (7191 simplex iterations) in 6.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.951374291540e+04, best bound 1.951182566709e+04, gap 0.0098%