Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:13:57 2012

Optimize a model with 3198 rows, 1560 columns and 10998 nonzeros
Presolve removed 820 rows and 39 columns
Presolve time: 0.06s
Presolved: 2378 rows, 1521 columns, 9204 nonzeros
Variable types: 0 continuous, 1521 integer (1521 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.000000e+00, 2760 iterations, 0.16 seconds

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

     0     0    3.00000    0   42   26.00000    3.00000  88.5%     -    0s
H    0     0                       5.0000000    3.00000  40.0%     -    0s
     0     0    3.00000    0  226    5.00000    3.00000  40.0%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   42    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   66    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   40    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   64    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   65    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   40    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   62    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   42    4.00000    3.00000  25.0%     -    3s
     0     2    3.00000    0   42    4.00000    3.00000  25.0%     -    3s

Explored 3 nodes (39395 simplex iterations) in 3.92 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%