Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:03:05 2012

Optimize a model with 5231 rows, 2352 columns and 17806 nonzeros
Presolve removed 1010 rows and 2 columns
Presolve time: 0.12s
Presolved: 4269 rows, 2350 columns, 17486 nonzeros
Variable types: 0 continuous, 2350 integer (2350 binary)
Found heuristic solution: objective 48.0000000

Root relaxation: objective 3.000000e+00, 3512 iterations, 0.33 seconds

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

     0     0    3.00000    0   66   48.00000    3.00000  93.8%     -    1s
H    0     0                      47.0000000    3.00000  93.6%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    1s
     0     0    3.00000    0   64    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  104    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   81    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0  103    4.00000    3.00000  25.0%     -    3s
H    0     0                       3.0000000    3.00000   0.0%     -    3s

Cutting planes:
  Zero half: 5

Explored 0 nodes (28601 simplex iterations) in 3.83 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%