Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:23:10 2012

Optimize a model with 8315 rows, 4422 columns and 29038 nonzeros
Presolve removed 1059 rows and 68 columns
Presolve time: 0.28s
Presolved: 7256 rows, 4354 columns, 26178 nonzeros
Variable types: 0 continuous, 4354 integer (4354 binary)
Found heuristic solution: objective 66.0000000

Root relaxation: objective 3.000000e+00, 5667 iterations, 0.65 seconds

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

     0     0    3.00000    0   65   66.00000    3.00000  95.5%     -    3s
H    0     0                       4.0000000    3.00000  25.0%     -    3s
H    0     0                       3.0000000    3.00000   0.0%     -    3s

Explored 0 nodes (23544 simplex iterations) in 3.57 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%