Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:07:59 2012

Optimize a model with 572 rows, 506 columns and 2134 nonzeros
Presolve removed 2 rows and 44 columns
Presolve time: 0.01s
Presolved: 570 rows, 462 columns, 2090 nonzeros
Variable types: 0 continuous, 462 integer (462 binary)
Found heuristic solution: objective 10.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: objective 2.000000e+00, 488 iterations, 0.01 seconds

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

     0     0    2.00000    0   40    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   63    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   62    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   62    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   40    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   63    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   62    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   63    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   62    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   63    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   63    3.00000    2.00000  33.3%     -    0s
     0     2    2.00000    0   63    3.00000    2.00000  33.3%     -    0s

Cutting planes:
  Gomory: 3
  Zero half: 2

Explored 10 nodes (18083 simplex iterations) in 0.76 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%