Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:59:07 2012

Optimize a model with 5616 rows, 2352 columns and 19008 nonzeros
Presolve removed 1632 rows and 0 columns
Presolve time: 0.14s
Presolved: 3984 rows, 2352 columns, 15264 nonzeros
Variable types: 0 continuous, 2352 integer (2352 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 3.000000e+00, 4125 iterations, 0.44 seconds

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

     0     0    3.00000    0   66   30.00000    3.00000  90.0%     -    1s
H    0     0                       5.0000000    3.00000  40.0%     -    1s
     0     0    3.00000    0  101    5.00000    3.00000  40.0%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    1s
     0     0    3.00000    0  115    4.00000    3.00000  25.0%     -    3s
     0     0    3.00000    0  138    4.00000    3.00000  25.0%     -    4s
     0     0    3.00000    0  144    4.00000    3.00000  25.0%     -    6s
     0     0    3.00000    0   58    4.00000    3.00000  25.0%     -    8s
     0     0    3.00000    0   86    4.00000    3.00000  25.0%     -    9s
     0     0    3.00000    0   86    4.00000    3.00000  25.0%     -   10s
     0     2    3.00000    0   86    4.00000    3.00000  25.0%     -   11s

Explored 3 nodes (67879 simplex iterations) in 11.91 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%