Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:42:10 2012

Optimize a model with 13397 rows, 4422 columns and 44284 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.40s
Presolved: 13461 rows, 4420 columns, 48234 nonzeros
Variable types: 0 continuous, 4420 integer (4420 binary)
Found heuristic solution: objective 66.0000000

Root relaxation: objective 2.000000e+00, 3295 iterations, 0.11 seconds

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

     0     0    2.00000    0  132   66.00000    2.00000  97.0%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0 2594    5.00000    3.00000  40.0%     -    2s
     0     0    3.00000    0 2577    5.00000    3.00000  40.0%     -    4s
     0     0    3.00787    0 2857    5.00000    3.00787  39.8%     -    5s
H    0     0                       4.0000000    3.00787  24.8%     -    5s

Cutting planes:
  Clique: 32
  Zero half: 6

Explored 0 nodes (19008 simplex iterations) in 5.52 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%