Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:17:11 2013

Optimize a model with 1069 rows, 17017 columns and 912020 nonzeros
Presolve removed 69 rows and 399 columns
Presolve time: 4.30s
Presolved: 1000 rows, 16618 columns, 890627 nonzeros
Variable types: 0 continuous, 16618 integer (16618 binary)
Found heuristic solution: objective 11382.000000
Found heuristic solution: objective 8820.0000000

Root relaxation: objective 7.176714e+03, 3907 iterations, 1.28 seconds

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

     0     0 7176.71429    0   54 8820.00000 7176.71429  18.6%     -    6s
H    0     0                    7880.0000000 7176.71429  8.92%     -    6s
*    0     0               0    7187.0000000 7187.00000   0.0%     -    7s

Cutting planes:
  Clique: 3
  Zero half: 13

Explored 0 nodes (4367 simplex iterations) in 7.94 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.187000000000e+03, best bound 7.187000000000e+03, gap 0.0%