Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:14:29 2012

Optimize a model with 3158 rows, 1560 columns and 10840 nonzeros
Presolve removed 705 rows and 41 columns
Presolve time: 0.11s
Presolved: 2453 rows, 1519 columns, 9076 nonzeros
Variable types: 0 continuous, 1519 integer (1519 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 3.000000e+00, 2075 iterations, 0.12 seconds

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

     0     0    3.00000    0   40   39.00000    3.00000  92.3%     -    0s
H    0     0                      38.0000000    3.00000  92.1%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
H    0     0                       3.0000000    3.00000   0.0%     -    0s

Explored 0 nodes (6918 simplex iterations) in 0.59 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%