Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:24:59 2012

Optimize a model with 9859 rows, 4692 columns and 33930 nonzeros
Presolve removed 1431 rows and 70 columns
Presolve time: 0.38s
Presolved: 8428 rows, 4622 columns, 30214 nonzeros
Variable types: 0 continuous, 4622 integer (4622 binary)
Found heuristic solution: objective 68.0000000

Root relaxation: objective 4.000000e+00, 7664 iterations, 0.89 seconds

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

*    0     0               0       4.0000000    4.00000   0.0%     -    1s

Explored 0 nodes (12216 simplex iterations) in 1.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%