Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:16:39 2012

Optimize a model with 2919 rows, 1640 columns and 10198 nonzeros
Presolve removed 562 rows and 2 columns
Presolve time: 0.10s
Presolved: 2397 rows, 1638 columns, 10280 nonzeros
Variable types: 0 continuous, 1638 integer (1638 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 3.000000e+00, 1780 iterations, 0.09 seconds

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

     0     0    3.00000    0  255   40.00000    3.00000  92.5%     -    0s
H    0     0                      22.0000000    3.00000  86.4%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
H    0     0                       3.0000000    3.00000   0.0%     -    0s

Explored 0 nodes (5911 simplex iterations) in 0.48 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%