Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:38 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 2.688915e+03, 14 iterations, 0.00 seconds

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

     0     0 2688.91531    0    7          - 2688.91531     -      -    0s
     0     0 2688.97686    0    8          - 2688.97686     -      -    0s
     0     0 2688.97686    0    8          - 2688.97686     -      -    0s
     0     0 2689.08216    0    3          - 2689.08216     -      -    0s
H    0     0                    2689.1098456 2689.08216  0.00%     -    0s

Cutting planes:
  Cover: 1
  Implied bound: 3

Explored 0 nodes (25 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.689109845638e+03, best bound 2.689082158374e+03, gap 0.0010%