Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:13 2012

Optimize a model with 55 rows, 55 columns and 190 nonzeros
Presolve removed 0 rows and 2 columns
Presolve time: 0.00s
Presolved: 55 rows, 53 columns, 188 nonzeros
Variable types: 0 continuous, 53 integer (52 binary)
Found heuristic solution: objective 9.0000000

Root relaxation: objective 0.000000e+00, 36 iterations, 0.00 seconds

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

     0     0    0.00000    0   18    9.00000    0.00000   100%     -    0s
H    0     0                       5.0000000    0.00000   100%     -    0s
H    0     0                       4.0000000    0.00000   100%     -    0s
     0     0    0.16327    0   21    4.00000    0.16327  95.9%     -    0s
     0     0    0.71654    0   29    4.00000    0.71654  82.1%     -    0s
H    0     0                       3.0000000    0.71654  76.1%     -    0s
     0     0    0.71654    0   30    3.00000    0.71654  76.1%     -    0s
     0     0    0.71654    0   29    3.00000    0.71654  76.1%     -    0s
     0     2    0.75700    0   26    3.00000    0.75700  74.8%     -    0s

Cutting planes:
  Gomory: 4

Explored 9 nodes (198 simplex iterations) in 0.01 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%