Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:12:44 2013

Optimize a model with 781 rows, 10113 columns and 453775 nonzeros
Presolve removed 76 rows and 396 columns
Presolve time: 3.33s
Presolved: 705 rows, 9717 columns, 431172 nonzeros
Variable types: 0 continuous, 9717 integer (9717 binary)
Found heuristic solution: objective 6118.0000000
Found heuristic solution: objective 5512.0000000

Root relaxation: objective 3.807000e+03, 2231 iterations, 0.49 seconds

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

     0     0 3807.00000    0   28 5512.00000 3807.00000  30.9%     -    4s
H    0     0                    3904.0000000 3807.00000  2.48%     -    4s
H    0     0                    3858.0000000 3807.00000  1.32%     -    4s
*    0     0               0    3813.0000000 3813.00000   0.0%     -    4s

Cutting planes:
  Clique: 1
  Zero half: 1

Explored 0 nodes (2355 simplex iterations) in 4.49 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.813000000000e+03, best bound 3.813000000000e+03, gap 0.0%