Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:07 2012

Optimize a model with 23 rows, 19 columns and 74 nonzeros
Presolve time: 0.00s
Presolved: 23 rows, 19 columns, 74 nonzeros
Variable types: 0 continuous, 19 integer (19 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 0.000000e+00, 10 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    8    4.00000    0.00000   100%     -    0s
     0     0    0.62500    0   10    4.00000    0.62500  84.4%     -    0s
     0     0    0.62500    0   10    4.00000    0.62500  84.4%     -    0s
     0     0    0.62500    0   10    4.00000    0.62500  84.4%     -    0s
     0     2    0.64706    0   10    4.00000    0.64706  83.8%     -    0s
*    7     3               4       3.0000000    1.00000  66.7%   5.6    0s

Cutting planes:
  Gomory: 1
  Mod-K: 2

Explored 11 nodes (73 simplex iterations) in 0.00 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%