Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:37 2013

Optimize a model with 30 rows, 221 columns and 2048 nonzeros
Presolve removed 12 rows and 12 columns
Presolve time: 0.00s
Presolved: 18 rows, 209 columns, 1824 nonzeros
Variable types: 201 continuous, 8 integer (8 binary)

Root relaxation: objective 3.439407e+03, 16 iterations, 0.00 seconds

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

     0     0 3439.40651    0    8          - 3439.40651     -      -    0s
     0     0 3439.44638    0    8          - 3439.44638     -      -    0s
     0     0 3439.44659    0    8          - 3439.44659     -      -    0s
     0     0 3439.50930    0    3          - 3439.50930     -      -    0s
H    0     0                    3439.5351316 3439.50930  0.00%     -    0s

Cutting planes:
  Cover: 1
  Implied bound: 3
  Flow cover: 1

Explored 0 nodes (26 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.439535131639e+03, best bound 3.439509300403e+03, gap 0.0008%