Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:33:04 2012

Optimize a model with 12803 rows, 4422 columns and 42502 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.38s
Presolved: 12801 rows, 4420 columns, 42114 nonzeros
Variable types: 0 continuous, 4420 integer (4420 binary)
Found heuristic solution: objective 66.0000000

Root relaxation: objective 2.000000e+00, 3078 iterations, 0.10 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                      57.0000000    2.00000  96.5%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0 2627    5.00000    3.00000  40.0%     -    3s
H    0     0                       4.0000000    3.00000  25.0%     -    4s
     0     0    3.00000    0  138    4.00000    3.00000  25.0%     -   12s
     0     2    3.00000    0  121    4.00000    3.00000  25.0%     -   13s

Cutting planes:
  Clique: 13

Explored 1 nodes (57419 simplex iterations) in 15.10 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%