Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:07:10 2012

Optimize a model with 1959 rows, 420 columns and 6198 nonzeros
Presolve removed 1122 rows and 2 columns
Presolve time: 0.05s
Presolved: 857 rows, 418 columns, 4614 nonzeros
Variable types: 0 continuous, 418 integer (418 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 6.000000e+00, 1167 iterations, 0.05 seconds

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

*    0     0               0       6.0000000    6.00000   0.0%     -    0s

Explored 0 nodes (1557 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%