Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:45:47 2012

Optimize a model with 52487 rows, 46872 columns and 203254 nonzeros
Presolve removed 21 rows and 4106 columns
Presolve time: 1.16s
Presolved: 52466 rows, 42766 columns, 198664 nonzeros
Variable types: 0 continuous, 42766 integer (42766 binary)
Found heuristic solution: objective 216.0000000

Root relaxation: objective 2.000000e+00, 31468 iterations, 2.82 seconds
Total elapsed time = 7.85s

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

     0     0    2.00000    0  386  216.00000    2.00000  99.1%     -    9s
H    0     0                     197.0000000    2.00000  99.0%     -    9s
H    0     0                       4.0000000    2.00000  50.0%     -    9s
     0     0    2.20000    0 5033    4.00000    2.20000  45.0%     -   25s
H    0     0                       3.0000000    2.20000  26.7%     -   29s

Cutting planes:
  Gomory: 1
  Zero half: 8

Explored 0 nodes (127295 simplex iterations) in 29.46 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%