Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:52:18 2012

Optimize a model with 5499 rows, 2256 columns and 18565 nonzeros
Presolve removed 1693 rows and 47 columns
Presolve time: 0.12s
Presolved: 3806 rows, 2209 columns, 14617 nonzeros
Variable types: 0 continuous, 2209 integer (2209 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 4.000000e+00, 3394 iterations, 0.26 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%     -    0s

Explored 0 nodes (4678 simplex iterations) in 0.48 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%