Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:21:20 2013

Optimize a model with 1561 rows, 441 columns and 4851 nonzeros
Presolve removed 351 rows and 228 columns
Presolve time: 0.01s
Presolved: 1210 rows, 213 columns, 3810 nonzeros
Variable types: 10 continuous, 203 integer (203 binary)
Found heuristic solution: objective 10476.000000

Root relaxation: objective 7.579615e+03, 658 iterations, 0.01 seconds

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

     0     0 7579.61538    0    8 10476.0000 7579.61538  27.6%     -    0s
H    0     0                    7587.0000000 7579.61538  0.10%     -    0s
     0     0 7580.13013    0   20 7587.00000 7580.13013  0.09%     -    0s
     0     0 7580.13013    0    8 7587.00000 7580.13013  0.09%     -    0s
     0     0 7580.80657    0   19 7587.00000 7580.80657  0.08%     -    0s
     0     1 7581.12356    0   19 7587.00000 7581.12356  0.08%     -    0s

Cutting planes:
  Gomory: 5
  Cover: 3
  Implied bound: 3
  MIR: 4
  Zero half: 2

Explored 4 nodes (885 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.587000000000e+03, best bound 7.587000000000e+03, gap 0.0%