Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:57 2013

Optimize a model with 280 rows, 3650 columns and 22150 nonzeros
Presolve removed 10 rows and 570 columns
Presolve time: 0.03s
Presolved: 270 rows, 3080 columns, 20150 nonzeros
Variable types: 3010 continuous, 70 integer (70 binary)

Root relaxation: objective 2.199252e+04, 129 iterations, 0.00 seconds

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

     0     0 21992.5209    0    8          - 21992.5209     -      -    0s
     0     0 21993.9422    0    8          - 21993.9422     -      -    0s
     0     0 22061.6646    0    7          - 22061.6646     -      -    0s
     0     0 22061.6646    0    7          - 22061.6646     -      -    0s
H    0     0                    23452.732629 22061.6646  5.93%     -    0s
     0     2 22061.6646    0    7 23452.7326 22061.6646  5.93%     -    0s
*   16     9              14    22166.763926 22061.6646  0.47%   7.2    0s
*   25     5               7    22134.953373 22134.1177  0.00%   5.3    0s

Cutting planes:
  Flow cover: 2

Explored 26 nodes (440 simplex iterations) in 0.28 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.213495337267e+04, best bound 2.213411767227e+04, gap 0.0038%