Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:27 2012

Optimize a model with 69 rows, 63 columns and 233 nonzeros
Presolve time: 0.00s
Presolved: 69 rows, 63 columns, 233 nonzeros
Variable types: 0 continuous, 63 integer (63 binary)
Found heuristic solution: objective 16.0000000

Root relaxation: objective 0.000000e+00, 41 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   29   16.00000    0.00000   100%     -    0s
H    0     0                      14.0000000    0.00000   100%     -    0s
H    0     0                      10.0000000    0.00000   100%     -    0s
H    0     0                       6.0000000    0.00000   100%     -    0s
H    0     0                       5.0000000    0.00000   100%     -    0s
     0     0    0.45455    0   31    5.00000    0.45455  90.9%     -    0s
     0     0    0.48980    0   32    5.00000    0.48980  90.2%     -    0s
     0     0    0.51818    0   38    5.00000    0.51818  89.6%     -    0s
     0     0    0.54060    0   36    5.00000    0.54060  89.2%     -    0s
     0     0    0.60851    0   38    5.00000    0.60851  87.8%     -    0s
     0     0    0.60879    0   38    5.00000    0.60879  87.8%     -    0s
     0     2    0.61957    0   38    5.00000    0.61957  87.6%     -    0s
*    4     4               3       3.0000000    2.03125  32.3%  23.5    0s

Cutting planes:
  Gomory: 1
  Zero half: 1
  Mod-K: 6

Explored 5 nodes (277 simplex iterations) in 0.02 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%