Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:47 2012

Optimize a model with 47 rows, 43 columns and 158 nonzeros
Presolve time: 0.00s
Presolved: 47 rows, 43 columns, 158 nonzeros
Variable types: 0 continuous, 43 integer (43 binary)
Found heuristic solution: objective 14.0000000
Found heuristic solution: objective 13.0000000

Root relaxation: objective 0.000000e+00, 29 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   20   13.00000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
H    0     0                       5.0000000    0.00000   100%     -    0s
     0     0    0.79710    0   22    5.00000    0.79710  84.1%     -    0s
     0     0    0.83333    0   22    5.00000    0.83333  83.3%     -    0s
H    0     0                       4.0000000    0.83333  79.2%     -    0s
     0     2    0.83871    0   21    4.00000    0.83871  79.0%     -    0s

Cutting planes:
  Gomory: 1
  Mod-K: 4

Explored 18 nodes (246 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%