Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:05 2012

Optimize a model with 23 rows, 18 columns and 73 nonzeros
Presolve time: 0.00s
Presolved: 23 rows, 18 columns, 73 nonzeros
Variable types: 0 continuous, 18 integer (18 binary)
Found heuristic solution: objective 6.0000000

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    7    6.00000    0.00000   100%     -    0s
     0     0    0.76667    0   12    6.00000    0.76667  87.2%     -    0s
     0     0    0.84286    0   13    6.00000    0.84286  86.0%     -    0s
     0     0    0.91667    0   10    6.00000    0.91667  84.7%     -    0s
H    0     0                       5.0000000    0.91667  81.7%     -    0s
     0     2    0.91667    0   10    5.00000    0.91667  81.7%     -    0s
*    3     3               2       4.0000000    3.33333  16.7%  12.0    0s

Cutting planes:
  Gomory: 1
  Zero half: 3
  Mod-K: 1

Explored 4 nodes (80 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%