Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:58 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 2.207062e+04, 154 iterations, 0.00 seconds

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

     0     0 22070.6191    0    4          - 22070.6191     -      -    0s
     0     0 22070.6191    0    4          - 22070.6191     -      -    0s
     0     0 22071.4190    0    4          - 22071.4190     -      -    0s
     0     0 22071.4190    0    4          - 22071.4190     -      -    0s
     0     0 22071.4190    0    4          - 22071.4190     -      -    0s
     0     0 22071.4190    0    4          - 22071.4190     -      -    0s
     0     0 22071.4190    0    4          - 22071.4190     -      -    0s
     0     0 22071.4190    0    4          - 22071.4190     -      -    0s
H    0     0                    22404.650981 22071.4190  1.49%     -    0s
     0     2 22071.4190    0    4 22404.6510 22071.4190  1.49%     -    0s
*    9     2               7    22333.158214 22332.5895  0.00%  12.6    0s

Cutting planes:
  Flow cover: 5

Explored 10 nodes (682 simplex iterations) in 0.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.233315821446e+04, best bound 2.233258947341e+04, gap 0.0025%