Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:08:00 2012

Optimize a model with 506 rows, 506 columns and 1936 nonzeros
Presolve removed 1 rows and 22 columns
Presolve time: 0.01s
Presolved: 505 rows, 484 columns, 1914 nonzeros
Variable types: 0 continuous, 484 integer (484 binary)
Found heuristic solution: objective 10.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: objective 2.000000e+00, 437 iterations, 0.00 seconds

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

     0     0    2.00000    0   42    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   66    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   42    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   65    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   65    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   65    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   65    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   65    3.00000    2.00000  33.3%     -    0s
     0     2    2.00000    0   65    3.00000    2.00000  33.3%     -    0s

Cutting planes:
  Gomory: 3
  Zero half: 1

Explored 8 nodes (12746 simplex iterations) in 0.50 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%