Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:04:46 2012

Optimize a model with 5903 rows, 2352 columns and 19822 nonzeros
Presolve removed 1298 rows and 2 columns
Presolve time: 0.14s
Presolved: 4653 rows, 2350 columns, 18910 nonzeros
Variable types: 0 continuous, 2350 integer (2350 binary)
Found heuristic solution: objective 48.0000000

Root relaxation: objective 4.000000e+00, 3629 iterations, 0.32 seconds

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

     0     0    4.00000    0   12   48.00000    4.00000  91.7%     -    0s
H    0     0                       4.0000000    4.00000   0.0%     -    0s

Explored 0 nodes (8673 simplex iterations) in 0.91 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%