Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:13:33 2013

Optimize a model with 1083 rows, 15425 columns and 938895 nonzeros
Presolve removed 28 rows and 76 columns (presolve time = 5s) ...
Presolve removed 28 rows and 76 columns
Presolve time: 5.21s
Presolved: 1055 rows, 15349 columns, 933449 nonzeros
Variable types: 0 continuous, 15349 integer (15349 binary)
Found heuristic solution: objective 7401.0000000

Root relaxation: objective 6.477000e+03, 4458 iterations, 1.80 seconds

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

     0     0 6477.00000    0   53 7401.00000 6477.00000  12.5%     -    7s
H    0     0                    7168.0000000 6477.00000  9.64%     -    7s
H    0     0                    7079.0000000 6477.00000  8.50%     -    8s
     0     0 6483.00000    0   30 7079.00000 6483.00000  8.42%     -    9s
*    0     0               0    6488.0000000 6488.00000   0.0%     -   10s

Cutting planes:
  Clique: 7
  Zero half: 2

Explored 0 nodes (6192 simplex iterations) in 10.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.488000000000e+03, best bound 6.488000000000e+03, gap 0.0%