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

Optimize a model with 1231 rows, 812 columns and 4366 nonzeros
Presolve removed 255 rows and 30 columns
Presolve time: 0.05s
Presolved: 976 rows, 782 columns, 3680 nonzeros
Variable types: 0 continuous, 782 integer (782 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 3.000000e+00, 732 iterations, 0.02 seconds

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

     0     0    3.00000    0   36   28.00000    3.00000  89.3%     -    0s
H    0     0                      18.0000000    3.00000  83.3%     -    0s
H    0     0                       7.0000000    3.00000  57.1%     -    0s
*    0     0               0       3.0000000    3.00000   0.0%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 8

Explored 0 nodes (2010 simplex iterations) in 0.11 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%