Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:14:31 2013

Optimize a model with 1114 rows, 16835 columns and 990470 nonzeros
Presolve removed 10 rows and 0 columns
Presolve time: 0.90s
Presolved: 1104 rows, 16835 columns, 990185 nonzeros
Variable types: 0 continuous, 16835 integer (16835 binary)
Found heuristic solution: objective 8504.0000000

Root relaxation: objective 6.763000e+03, 3828 iterations, 1.45 seconds

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

     0     0 6763.00000    0   56 8504.00000 6763.00000  20.5%     -    3s
H    0     0                    7979.0000000 6763.00000  15.2%     -    3s
*    0     0               0    6810.0000000 6810.00000   0.0%     -    4s

Cutting planes:
  Clique: 9
  Zero half: 27

Explored 0 nodes (4840 simplex iterations) in 4.63 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.810000000000e+03, best bound 6.810000000000e+03, gap 0.0%