Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:15:16 2013

Optimize a model with 1009 rows, 15262 columns and 818240 nonzeros
Presolve removed 67 rows and 484 columns
Presolve time: 4.83s
Presolved: 942 rows, 14778 columns, 789942 nonzeros
Variable types: 0 continuous, 14778 integer (14778 binary)
Found heuristic solution: objective 8121.0000000

Root relaxation: objective 6.452091e+03, 3482 iterations, 1.06 seconds

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

     0     0 6452.09091    0   39 8121.00000 6452.09091  20.6%     -    6s
H    0     0                    6618.0000000 6452.09091  2.51%     -    6s
H    0     0                    6613.0000000 6452.09091  2.43%     -    6s
*    0     0               0    6463.0000000 6463.00000   0.0%     -    7s

Cutting planes:
  Clique: 1
  Zero half: 9

Explored 0 nodes (3769 simplex iterations) in 7.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.463000000000e+03, best bound 6.463000000000e+03, gap 0.0%