Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:15:23 2013

Optimize a model with 663 rows, 9770 columns and 321030 nonzeros
Presolve removed 8 rows and 8 columns
Presolve time: 1.00s
Presolved: 655 rows, 9762 columns, 320575 nonzeros
Variable types: 0 continuous, 9762 integer (9762 binary)
Found heuristic solution: objective 5363.0000000

Root relaxation: objective 3.497000e+03, 2097 iterations, 0.36 seconds

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

     0     0 3497.00000    0   56 5363.00000 3497.00000  34.8%     -    1s
H    0     0                    3988.0000000 3497.00000  12.3%     -    1s
H    0     0                    3927.0000000 3497.00000  10.9%     -    1s
     0     0 3527.50000    0   32 3927.00000 3527.50000  10.2%     -    2s
     0     0 3536.66667    0   78 3927.00000 3536.66667  9.94%     -    2s
     0     0 3537.00000    0  117 3927.00000 3537.00000  9.93%     -    2s
H    0     0                    3550.0000000 3537.00000  0.37%     -    3s
H    0     0                    3543.0000000 3537.00000  0.17%     -    3s
*    0     0               0    3537.0000000 3537.00000   0.0%     -    3s

Cutting planes:
  Clique: 18
  Zero half: 24

Explored 0 nodes (3716 simplex iterations) in 3.37 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.537000000000e+03, best bound 3.537000000000e+03, gap 0.0%