Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:17 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 1.791602e+04, 244 iterations, 0.00 seconds

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

     0     0 17916.0191    0    3          - 17916.0191     -      -    0s
     0     0 17963.1979    0    4          - 17963.1979     -      -    0s
     0     0 17970.7420    0    5          - 17970.7420     -      -    0s
     0     0 17978.7967    0    4          - 17978.7967     -      -    0s
     0     0 17979.0027    0    4          - 17979.0027     -      -    0s
H    0     0                    17985.380453 17979.0027  0.04%     -    0s
     0     0 17979.0027    0    2 17985.3805 17979.0027  0.04%     -    0s
     0     0 17983.3443    0    2 17985.3805 17983.3443  0.01%     -    0s
     0     0 17983.9285    0    2 17985.3805 17983.9285  0.01%     -    0s

Cutting planes:
  Flow cover: 1

Explored 0 nodes (352 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798538045271e+04, best bound 1.798392845488e+04, gap 0.0081%