Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:08:45 2012

Optimize a model with 2828 rows, 552 columns and 8922 nonzeros
Presolve removed 624 rows and 2 columns
Presolve time: 0.07s
Presolved: 2204 rows, 550 columns, 12039 nonzeros
Variable types: 0 continuous, 550 integer (550 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 6.000000e+00, 1590 iterations, 0.14 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 (2497 simplex iterations) in 0.29 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%