Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:54 2012

Optimize a model with 59 rows, 51 columns and 196 nonzeros
Presolve time: 0.00s
Presolved: 59 rows, 51 columns, 196 nonzeros
Variable types: 0 continuous, 51 integer (51 binary)
Found heuristic solution: objective 15.0000000
Found heuristic solution: objective 12.0000000

Root relaxation: objective 0.000000e+00, 32 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   22   12.00000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
     0     0    0.60714    0   25    7.00000    0.60714  91.3%     -    0s
     0     0    0.78571    0   27    7.00000    0.78571  88.8%     -    0s
     0     0    0.85906    0   32    7.00000    0.85906  87.7%     -    0s
     0     0    0.90434    0   32    7.00000    0.90434  87.1%     -    0s
     0     0    0.91579    0   28    7.00000    0.91579  86.9%     -    0s
     0     0    0.91579    0   28    7.00000    0.91579  86.9%     -    0s
     0     2    1.01499    0   28    7.00000    1.01499  85.5%     -    0s
*    4     4               3       4.0000000    3.35000  16.2%  19.5    0s

Cutting planes:
  Gomory: 1
  Zero half: 6

Explored 5 nodes (204 simplex iterations) in 0.01 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%