Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:19:09 2012

Optimize a model with 7502 rows, 3782 columns and 25984 nonzeros
Presolve removed 1284 rows and 63 columns
Presolve time: 0.23s
Presolved: 6218 rows, 3719 columns, 22547 nonzeros
Variable types: 0 continuous, 3719 integer (3719 binary)
Found heuristic solution: objective 61.0000000

Root relaxation: objective 3.000000e+00, 4803 iterations, 0.57 seconds

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

     0     0    3.00000    0   48   61.00000    3.00000  95.1%     -    3s
H    0     0                       4.0000000    3.00000  25.0%     -    3s
H    0     0                       3.0000000    3.00000   0.0%     -    3s

Explored 0 nodes (24851 simplex iterations) in 3.60 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%