Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:02:50 2013

Optimize a model with 865 rows, 8317 columns and 582197 nonzeros
Presolve removed 4 rows and 9 columns
Presolve time: 1.91s
Presolved: 861 rows, 8308 columns, 581784 nonzeros
Variable types: 0 continuous, 8308 integer (8308 binary)
Found heuristic solution: objective 4512.0000000

Root relaxation: objective 3.995333e+03, 2204 iterations, 0.47 seconds

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

     0     0 3995.33333    0   23 4512.00000 3995.33333  11.5%     -    2s
H    0     0                    4053.0000000 3995.33333  1.42%     -    2s
*    0     0               0    3999.0000000 3999.00000   0.0%     -    3s

Cutting planes:
  Clique: 1
  Zero half: 16

Explored 0 nodes (2547 simplex iterations) in 3.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.999000000000e+03, best bound 3.999000000000e+03, gap 0.0%