Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:02:06 2012

Optimize a model with 31841 rows, 33672 columns and 128281 nonzeros
Presolve removed 26 rows and 4394 columns
Presolve time: 0.65s
Presolved: 31815 rows, 29278 columns, 123541 nonzeros
Variable types: 0 continuous, 29278 integer (29278 binary)
Found heuristic solution: objective 183.0000000

Root relaxation: objective 2.000000e+00, 20230 iterations, 1.23 seconds

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

     0     0    2.00000    0  282  183.00000    2.00000  98.9%     -    4s
H    0     0                     178.0000000    2.00000  98.9%     -    4s
H    0     0                       4.0000000    2.00000  50.0%     -    4s
     0     0    2.20000    0 1693    4.00000    2.20000  45.0%     -   10s
     0     0    2.40000    0 6569    4.00000    2.40000  40.0%     -   19s
H    0     0                       3.0000000    2.40000  20.0%     -   22s

Cutting planes:
  Gomory: 1
  Zero half: 9

Explored 0 nodes (90995 simplex iterations) in 22.74 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%