Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:55:56 2012

Optimize a model with 11640 rows, 3660 columns and 38340 nonzeros
Presolve removed 1 rows and 60 columns
Presolve time: 0.10s
Presolved: 11639 rows, 3600 columns, 38652 nonzeros
Variable types: 0 continuous, 3600 integer (3600 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 2.000000e+00, 6001 iterations, 0.79 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%     -    2s
H    0     0                      11.0000000    2.00000  81.8%     -    2s
H    0     0                       5.0000000    2.00000  60.0%     -    2s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -    3s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -    7s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -   12s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -   18s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -   22s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -   26s
     0     2    2.00000    0  118    5.00000    2.00000  60.0%     -   40s
     1     3    3.00000    1  874    5.00000    2.00000  60.0% 25156   48s
     2     4    3.00000    1  661    5.00000    3.00000  40.0% 29011   61s
*   34     5              25       4.0000000    3.00000  25.0%  1870   62s
    39     4     cutoff    3         4.00000    3.00000  25.0%  1891   65s
    54     3     cutoff    5         4.00000    3.00000  25.0%  1816   71s
    58     1     cutoff    4         4.00000    3.00000  25.0%  1950   76s

Cutting planes:
  Clique: 139

Explored 66 nodes (177946 simplex iterations) in 78.04 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%