Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:25:51 2012

Optimize a model with 7956 rows, 2652 columns and 26316 nonzeros
Presolve time: 0.07s
Presolved: 7956 rows, 2652 columns, 26868 nonzeros
Variable types: 0 continuous, 2652 integer (2652 binary)
Found heuristic solution: objective 31.0000000

Root relaxation: objective 2.000000e+00, 3034 iterations, 0.14 seconds

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

     0     0    2.00000    0  102   31.00000    2.00000  93.5%     -    0s
H    0     0                      11.0000000    2.00000  81.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    3s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    4s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    7s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    9s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -   10s
H    0     0                       4.0000000    2.00000  50.0%     -   19s
     0     2    2.00000    0  102    4.00000    2.00000  50.0%     -   19s
     1     3    3.00000    1  423    4.00000    2.00000  50.0% 13087   22s
     5     3    3.00000    2  292    4.00000    3.00000  25.0%  4832   25s

Cutting planes:
  Clique: 87

Explored 27 nodes (82297 simplex iterations) in 27.91 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%