Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:37:34 2012

Optimize a model with 9939 rows, 5112 columns and 34575 nonzeros
Presolve removed 1351 rows and 2 columns
Presolve time: 0.38s
Presolved: 8659 rows, 5110 columns, 36179 nonzeros
Variable types: 0 continuous, 5110 integer (5110 binary)
Found heuristic solution: objective 71.0000000

Root relaxation: objective 3.000000e+00, 6288 iterations, 0.93 seconds

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

     0     0    3.00000    0  108   71.00000    3.00000  95.8%     -    3s
H    0     0                       4.0000000    3.00000  25.0%     -    3s
H    0     0                       3.0000000    3.00000   0.0%     -    3s

Explored 0 nodes (21143 simplex iterations) in 3.92 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%