Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:06 2012

Optimize a model with 61 rows, 55 columns and 205 nonzeros
Presolve time: 0.00s
Presolved: 61 rows, 55 columns, 205 nonzeros
Variable types: 0 continuous, 55 integer (55 binary)
Found heuristic solution: objective 14.0000000

Root relaxation: objective 0.000000e+00, 35 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   24   14.00000    0.00000   100%     -    0s
H    0     0                       6.0000000    0.00000   100%     -    0s
     0     0    0.50000    0   25    6.00000    0.50000  91.7%     -    0s
     0     0    0.63193    0   28    6.00000    0.63193  89.5%     -    0s
     0     2    0.65217    0   28    6.00000    0.65217  89.1%     -    0s
*    3     3               2       4.0000000    2.75000  31.2%  20.3    0s

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

Explored 7 nodes (185 simplex iterations) in 0.02 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%