Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:18 2013

Optimize a model with 540 rows, 1420 columns and 3610 nonzeros
Presolve removed 30 rows and 20 columns
Presolve time: 0.01s
Presolved: 510 rows, 1400 columns, 3180 nonzeros
Variable types: 1210 continuous, 190 integer (190 binary)

Root relaxation: objective 2.162324e+04, 246 iterations, 0.00 seconds

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

     0     0 21623.2446    0    2          - 21623.2446     -      -    0s
     0     0 21664.2244    0    4          - 21664.2244     -      -    0s
     0     0 21682.2532    0    4          - 21682.2532     -      -    0s
     0     0 21684.3453    0    5          - 21684.3453     -      -    0s
     0     0 21686.5745    0    3          - 21686.5745     -      -    0s
     0     0 21686.7331    0    3          - 21686.7331     -      -    0s
H    0     0                    21808.029353 21686.7331  0.56%     -    0s
     0     0 21686.7331    0    2 21808.0294 21686.7331  0.56%     -    0s
     0     0 21686.7331    0    4 21808.0294 21686.7331  0.56%     -    0s
     0     0 21686.7331    0    3 21808.0294 21686.7331  0.56%     -    0s
     0     0 21686.7331    0    3 21808.0294 21686.7331  0.56%     -    0s
     0     2 21700.3729    0    3 21808.0294 21700.3729  0.49%     -    0s
*    8     6               5    21759.198219 21729.3972  0.14%   8.8    0s
*   13     4               5    21759.084574 21729.3972  0.14%   8.5    0s

Cutting planes:
  Gomory: 2
  Flow cover: 6

Explored 28 nodes (756 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.175908457433e+04, best bound 2.175908457433e+04, gap 0.0%