Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:39:35 2013

Optimize a model with 320 rows, 11350 columns and 122190 nonzeros
Presolve removed 10 rows and 250 columns
Presolve time: 0.30s
Presolved: 310 rows, 11100 columns, 112190 nonzeros
Variable types: 11010 continuous, 90 integer (90 binary)

Root relaxation: objective 2.162324e+04, 189 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   14          - 21623.2446     -      -    0s
     0     0 21623.4910    0   14          - 21623.4910     -      -    0s
     0     0 21650.6929    0   19          - 21650.6929     -      -    0s
     0     0 21650.6929    0   19          - 21650.6929     -      -    0s
     0     2 21651.4428    0   19          - 21651.4428     -      -    1s
*   34    22              32    21761.457743 21651.4444  0.51%   6.5    1s
*   52    26              15    21759.340344 21651.5244  0.50%   5.5    1s
*  332    27              17    21759.259695 21755.6046  0.02%   3.8    2s

Cutting planes:
  Flow cover: 2

Explored 357 nodes (1893 simplex iterations) in 2.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.175925969521e+04, best bound 2.175713801946e+04, gap 0.0098%