Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:10:25 2013

Optimize a model with 761 rows, 8591 columns and 424813 nonzeros
Presolve removed 31 rows and 110 columns
Presolve time: 3.69s
Presolved: 730 rows, 8481 columns, 421081 nonzeros
Variable types: 0 continuous, 8481 integer (8481 binary)
Found heuristic solution: objective 4575.0000000

Root relaxation: objective 3.304000e+03, 1719 iterations, 0.31 seconds

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

     0     0 3304.00000    0   24 4575.00000 3304.00000  27.8%     -    4s
H    0     0                    3505.0000000 3304.00000  5.73%     -    4s
     0     0 3316.12500    0   51 3505.00000 3316.12500  5.39%     -    4s
H    0     0                    3485.0000000 3316.12500  4.85%     -    5s
     0     0 3316.12500    0   24 3485.00000 3316.12500  4.85%     -    6s
*    0     0               0    3318.0000000 3318.00000   0.0%     -    6s

Cutting planes:
  Gomory: 1
  Clique: 3
  Zero half: 18

Explored 0 nodes (4505 simplex iterations) in 6.74 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.318000000000e+03, best bound 3.318000000000e+03, gap 0.0%