Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:51:47 2012

Optimize a model with 7685 rows, 2862 columns and 25705 nonzeros
Presolve time: 0.07s
Presolved: 7685 rows, 2862 columns, 26151 nonzeros
Variable types: 0 continuous, 2862 integer (2862 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 2.000000e+00, 2943 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  106   28.00000    2.00000  92.9%     -    0s
H    0     0                       9.0000000    2.00000  77.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0  106    5.00000    2.00000  60.0%     -    1s
H    0     0                       4.0000000    2.00000  50.0%     -    1s
     0     0    2.00000    0  106    4.00000    2.00000  50.0%     -    3s
     0     0    2.00000    0  106    4.00000    2.00000  50.0%     -    5s
     0     0    2.00000    0  106    4.00000    2.00000  50.0%     -    8s
     0     0    2.00000    0  106    4.00000    2.00000  50.0%     -   10s
     0     2    2.00000    0  106    4.00000    2.00000  50.0%     -   15s
     2     4    2.50000    1  492    4.00000    2.50000  37.5% 17728   23s
    15     6    2.66667    2  264    4.00000    2.50000  37.5%  3598   27s
    45    10    3.00000    3   96    4.00000    2.50000  37.5%  1469   30s

Cutting planes:
  Clique: 118

Explored 140 nodes (135613 simplex iterations) in 34.15 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%