Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:18 2013

Optimize a model with 160 rows, 1060 columns and 2140 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.00s
Presolved: 150 rows, 1050 columns, 2110 nonzeros
Variable types: 1040 continuous, 10 integer (10 binary)

Root relaxation: objective 2.162324e+04, 136 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 21655.4045    0    2          - 21655.4045     -      -    0s
     0     0 21661.9440    0    2          - 21661.9440     -      -    0s
     0     0 21661.9440    0    2          - 21661.9440     -      -    0s
     0     0 21677.7158    0    2          - 21677.7158     -      -    0s
     0     0 21677.7158    0    2          - 21677.7158     -      -    0s
H    0     0                    21741.249637 21677.7158  0.29%     -    0s
     0     1 21734.9915    0    1 21741.2496 21734.9915  0.03%     -    0s

Cutting planes:
  Flow cover: 1

Explored 2 nodes (240 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.174124963687e+04, best bound 2.174124963687e+04, gap 0.0%