Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:12:07 2013

Optimize a model with 807 rows, 10598 columns and 496632 nonzeros
Presolve removed 1 rows and 1 columns
Presolve time: 1.06s
Presolved: 806 rows, 10597 columns, 496547 nonzeros
Variable types: 0 continuous, 10597 integer (10597 binary)
Found heuristic solution: objective 5355.0000000

Root relaxation: objective 4.194667e+03, 2485 iterations, 0.59 seconds

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

     0     0 4194.66667    0   34 5355.00000 4194.66667  21.7%     -    1s
H    0     0                    4708.0000000 4194.66667  10.9%     -    2s
     0     0 4243.50000    0   39 4708.00000 4243.50000  9.87%     -    2s
H    0     0                    4312.0000000 4243.50000  1.59%     -    2s
*    0     0               0    4246.0000000 4246.00000   0.0%     -    3s

Cutting planes:
  Clique: 5
  Zero half: 16

Explored 0 nodes (3610 simplex iterations) in 3.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.246000000000e+03, best bound 4.246000000000e+03, gap 0.0%