Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:39:07 2012

Optimize a model with 10368 rows, 5256 columns and 36072 nonzeros
Presolve removed 1081 rows and 72 columns
Presolve time: 0.18s
Presolved: 9287 rows, 5184 columns, 33336 nonzeros
Variable types: 0 continuous, 5184 integer (5184 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 3.000000e+00, 7539 iterations, 0.47 seconds

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

     0     0    3.00000    0  144   45.00000    3.00000  93.3%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    1s
H    0     0                       3.0000000    3.00000   0.0%     -    2s

Explored 0 nodes (17629 simplex iterations) in 2.00 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%