Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:51:27 2013

Optimize a model with 10700 rows, 1600 columns and 32800 nonzeros
Presolve removed 1429 rows and 821 columns
Presolve time: 0.08s
Presolved: 9271 rows, 779 columns, 28404 nonzeros
Variable types: 16 continuous, 763 integer (763 binary)
Found heuristic solution: objective 34959.000000

Root relaxation: objective 2.805505e+04, 3036 iterations, 0.10 seconds

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

     0     0 28055.0500    0    8 34959.0000 28055.0500  19.7%     -    0s
H    0     0                    28067.000000 28055.0500  0.04%     -    0s
H    0     0                    28066.000000 28055.0500  0.04%     -    0s
     0     0 28056.6800    0   23 28066.0000 28056.6800  0.03%     -    0s
     0     0 28056.6800    0    8 28066.0000 28056.6800  0.03%     -    0s
     0     0 28056.6954    0   24 28066.0000 28056.6954  0.03%     -    0s
     0     0 28057.4695    0   26 28066.0000 28057.4695  0.03%     -    0s
     0     0 28058.0601    0   28 28066.0000 28058.0601  0.03%     -    0s
H    0     0                    28060.000000 28058.0601  0.01%     -    0s

Cutting planes:
  Gomory: 2
  Implied bound: 1
  MIR: 8
  Zero half: 3

Explored 0 nodes (3267 simplex iterations) in 0.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.806000000000e+04, best bound 2.805900000000e+04, gap 0.0036%