Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:41:36 2013

Optimize a model with 340 rows, 11130 columns and 122340 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.25s
Presolved: 330 rows, 11120 columns, 112330 nonzeros
Variable types: 11020 continuous, 100 integer (100 binary)

Root relaxation: objective 2.162324e+04, 152 iterations, 0.01 seconds

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

     0     0 21623.2446    0    6          - 21623.2446     -      -    0s
     0     0 21623.3678    0    6          - 21623.3678     -      -    0s
     0     0 21623.3678    0    6          - 21623.3678     -      -    0s
     0     2 21623.8333    0    6          - 21623.8333     -      -    1s
*   20    12              20    21760.951349 21632.7749  0.59%   5.8    1s
*   39    15              16    21760.471721 21634.3468  0.58%   5.0    1s
*   58    21              15    21760.389725 21735.8377  0.11%   4.3    1s
*  143    26              20    21760.009028 21747.1048  0.06%   3.3    2s
*  194    29              19    21759.395282 21747.8281  0.05%   3.1    2s
*  254    38              17    21759.349665 21751.7282  0.04%   3.1    2s
*  276    41              17    21759.264852 21752.1532  0.03%   3.0    2s
*  281    36              19    21759.207194 21752.1532  0.03%   3.0    2s

Cutting planes:
  Flow cover: 3

Explored 349 nodes (1208 simplex iterations) in 2.54 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.175920719402e+04, best bound 2.175724672611e+04, gap 0.0090%