Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:50:28 2012

Optimize a model with 52487 rows, 46872 columns and 203254 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 1.17s
Presolved: 52701 rows, 46870 columns, 249424 nonzeros
Variable types: 0 continuous, 46870 integer (46870 binary)
Found heuristic solution: objective 216.0000000

Root relaxation: objective 2.000000e+00, 30852 iterations, 2.96 seconds
Total elapsed time = 7.94s

    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                     171.0000000    2.00000  98.8%     -    9s
H    0     0                       4.0000000    2.00000  50.0%     -    9s
     0     0    2.22222    0 5895    4.00000    2.22222  44.4%     -   25s
     0     0    2.22222    0 16339    4.00000    2.22222  44.4%     -   41s
     0     0    2.22222    0 17090    4.00000    2.22222  44.4%     -  124s
     0     0    2.22222    0 17090    4.00000    2.22222  44.4%     -  190s
H    0     0                       3.0000000    2.22222  25.9%     -  220s

Cutting planes:
  Zero half: 12

Explored 0 nodes (298193 simplex iterations) in 220.07 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%