Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:01:03 2012

Optimize a model with 8436 rows, 3306 columns and 28386 nonzeros
Presolve removed 2339 rows and 114 columns
Presolve time: 0.16s
Presolved: 6097 rows, 3192 columns, 22857 nonzeros
Variable types: 0 continuous, 3192 integer (3192 binary)
Found heuristic solution: objective 32.0000000

Root relaxation: objective 4.000000e+00, 7281 iterations, 1.08 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 (9346 simplex iterations) in 1.51 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%