Gurobi 5.0.1 (linux64) logging started Fri Nov 16 10:52:33 2012

Optimize a model with 16146 rows, 4830 columns and 52992 nonzeros
Presolve time: 0.12s
Presolved: 16146 rows, 4830 columns, 53117 nonzeros
Variable types: 0 continuous, 4830 integer (4830 binary)
Found heuristic solution: objective 46.0000000

Root relaxation: objective 2.000000e+00, 4414 iterations, 0.15 seconds

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

     0     0    2.00000    0  138   46.00000    2.00000  95.7%     -    0s
H    0     0                      15.0000000    2.00000  86.7%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    2s
     0     0    2.00000    0  138    5.00000    2.00000  60.0%     -    3s
     0     0    2.00000    0  138    5.00000    2.00000  60.0%     -   12s
     0     0    2.00000    0  138    5.00000    2.00000  60.0%     -   22s
     0     0    2.00000    0  138    5.00000    2.00000  60.0%     -   30s
     0     0    2.00000    0  138    5.00000    2.00000  60.0%     -   38s
     0     0    2.00000    0  138    5.00000    2.00000  60.0%     -   44s
H    0     0                       4.0000000    2.00000  50.0%     -   47s
     0     2    2.00000    0  138    4.00000    2.00000  50.0%     -   58s
     1     3    3.00000    1  862    4.00000    2.00000  50.0% 44174   69s
     2     4    3.00000    1  711    4.00000    3.00000  25.0% 34495   79s
     3     5    3.00000    2  632    4.00000    3.00000  25.0% 24243   80s
     7     3     cutoff    3         4.00000    3.00000  25.0% 14721   90s
    13     3    3.00000    2  624    4.00000    3.00000  25.0%  9230   95s

Cutting planes:
  Clique: 164

Explored 19 nodes (241962 simplex iterations) in 99.36 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%