Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:15:14 2012

Optimize a model with 3280 rows, 1640 columns and 11320 nonzeros
Presolve removed 762 rows and 80 columns
Presolve time: 0.06s
Presolved: 2518 rows, 1560 columns, 9440 nonzeros
Variable types: 0 continuous, 1560 integer (1560 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 3.000000e+00, 3085 iterations, 0.20 seconds

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

*    0     0               0       3.0000000    3.00000   0.0%     -    0s

Explored 0 nodes (4211 simplex iterations) in 0.36 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%