Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:25 2013

Optimize a model with 240 rows, 1280 columns and 3590 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.00s
Presolved: 230 rows, 1270 columns, 3380 nonzeros
Variable types: 1220 continuous, 50 integer (50 binary)

Root relaxation: objective 1.791602e+04, 130 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    9          - 17916.0191     -      -    0s
     0     0 17920.7016    0    8          - 17920.7016     -      -    0s
     0     0 17920.7016    0    7          - 17920.7016     -      -    0s
H    0     0                    17984.080433 17920.7016  0.35%     -    0s
     0     1 17976.4365    0    6 17984.0804 17976.4365  0.04%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 4 nodes (235 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798408043325e+04, best bound 1.798339770521e+04, gap 0.0038%