Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:39:41 2013

Optimize a model with 320 rows, 11350 columns and 122190 nonzeros
Presolve removed 10 rows and 250 columns
Presolve time: 0.27s
Presolved: 310 rows, 11100 columns, 112190 nonzeros
Variable types: 11010 continuous, 90 integer (90 binary)

Root relaxation: objective 1.836170e+04, 166 iterations, 0.01 seconds

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

     0     0 18361.7044    0    7          - 18361.7044     -      -    0s
     0     0 18361.8111    0    7          - 18361.8111     -      -    0s
     0     0 18381.2294    0    7          - 18381.2294     -      -    0s
     0     0 18393.7338    0   27          - 18393.7338     -      -    0s
     0     0 18414.1552    0   11          - 18414.1552     -      -    0s
     0     0 18414.1552    0   11          - 18414.1552     -      -    0s
     0     0 18414.1552    0   11          - 18414.1552     -      -    2s
     0     0 18414.1636    0   11          - 18414.1636     -      -    2s
     0     0 18414.1636    0   11          - 18414.1636     -      -    2s
H    0     0                    18419.438607 18414.1636  0.03%     -    3s
     0     2 18417.5985    0    8 18419.4386 18417.5985  0.01%     -    3s

Cutting planes:
  Flow cover: 1

Explored 1 nodes (1214 simplex iterations) in 3.29 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.841943860693e+04, best bound 1.841759845707e+04, gap 0.0100%