Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:13:23 2012

Optimize a model with 6271 rows, 2450 columns and 21019 nonzeros
Presolve removed 933 rows and 2 columns
Presolve time: 0.16s
Presolved: 5387 rows, 2448 columns, 20997 nonzeros
Variable types: 0 continuous, 2448 integer (2448 binary)
Found heuristic solution: objective 49.0000000

Root relaxation: objective 4.000000e+00, 3329 iterations, 0.27 seconds

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

     0     0    4.00000    0   24   49.00000    4.00000  91.8%     -    0s
H    0     0                       4.0000000    4.00000   0.0%     -    0s

Explored 0 nodes (9282 simplex iterations) in 0.97 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%