Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:12:24 2013

Optimize a model with 639 rows, 8186 columns and 298685 nonzeros
Presolve removed 15 rows and 0 columns
Presolve time: 0.38s
Presolved: 624 rows, 8186 columns, 298280 nonzeros
Variable types: 0 continuous, 8186 integer (8186 binary)
Found heuristic solution: objective 5068.0000000

Root relaxation: objective 3.095500e+03, 1595 iterations, 0.25 seconds

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

     0     0 3095.50000    0   10 5068.00000 3095.50000  38.9%     -    0s
H    0     0                    3557.0000000 3095.50000  13.0%     -    0s
*    0     0               0    3098.0000000 3098.00000   0.0%     -    0s

Cutting planes:
  Clique: 2
  Zero half: 4

Explored 0 nodes (1699 simplex iterations) in 0.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.098000000000e+03, best bound 3.098000000000e+03, gap 0.0%