Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:39:08 2012

Optimize a model with 9735 rows, 3540 columns and 32509 nonzeros
Presolve time: 0.08s
Presolved: 9735 rows, 3540 columns, 32767 nonzeros
Variable types: 0 continuous, 3540 integer (3540 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 2.000000e+00, 3682 iterations, 0.16 seconds

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

     0     0    2.00000    0  118   37.00000    2.00000  94.6%     -    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  118    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -    5s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -    8s
H    0     0                       4.0000000    2.00000  50.0%     -    8s
     0     0    2.00000    0  118    4.00000    2.00000  50.0%     -   12s
     0     0    2.00000    0  118    4.00000    2.00000  50.0%     -   15s
     0     0    2.00000    0  118    4.00000    2.00000  50.0%     -   18s
     0     2    2.00000    0  118    4.00000    2.00000  50.0%     -   34s
     1     3    3.00000    1  472    4.00000    2.00000  50.0% 24213   39s
     2     4    3.00000    1  392    4.00000    3.00000  25.0% 18144   43s
     4     6    3.00000    2  251    4.00000    3.00000  25.0% 10250   45s
    34     4    3.00000    3  360    4.00000    3.00000  25.0%  1986   50s
    50     2     cutoff    6         4.00000    3.00000  25.0%  1877   55s

Cutting planes:
  Clique: 120

Explored 57 nodes (171181 simplex iterations) in 59.46 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%