Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:12:11 2013

Optimize a model with 919 rows, 11972 columns and 638667 nonzeros
Presolve removed 42 rows and 185 columns
Presolve time: 4.38s
Presolved: 877 rows, 11787 columns, 630709 nonzeros
Variable types: 0 continuous, 11787 integer (11787 binary)
Found heuristic solution: objective 5714.0000000

Root relaxation: objective 4.819000e+03, 3329 iterations, 0.94 seconds

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

*    0     0               0    4819.0000000 4819.00000   0.0%     -    5s

Explored 0 nodes (3329 simplex iterations) in 5.43 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.819000000000e+03, best bound 4.819000000000e+03, gap 0.0%