Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:42:25 2012

Optimize a model with 8176 rows, 3192 columns and 27496 nonzeros
Presolve time: 0.07s
Presolved: 8176 rows, 3192 columns, 27844 nonzeros
Variable types: 0 continuous, 3192 integer (3192 binary)
Found heuristic solution: objective 31.0000000

Root relaxation: objective 2.000000e+00, 2811 iterations, 0.07 seconds

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

     0     0    2.00000    0  112   31.00000    2.00000  93.5%     -    0s
H    0     0                      11.0000000    2.00000  81.8%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -    0s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -    3s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -    5s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -    8s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -   10s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -   12s
     0     2    2.00000    0  112    4.00000    2.00000  50.0%     -   21s
     1     3    3.00000    1  531    4.00000    2.00000  50.0% 29368   28s
     2     4    3.00000    1  380    4.00000    3.00000  25.0% 26063   34s
     3     5    3.00000    2  224    4.00000    3.00000  25.0% 17920   35s
    49     3    3.00000    2  110    4.00000    3.00000  25.0%  1640   40s

Cutting planes:
  Clique: 116

Explored 61 nodes (144327 simplex iterations) in 42.14 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%