Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:57 2012

Optimize a model with 57 rows, 51 columns and 191 nonzeros
Presolve time: 0.00s
Presolved: 57 rows, 51 columns, 191 nonzeros
Variable types: 0 continuous, 51 integer (51 binary)
Found heuristic solution: objective 15.0000000

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   23   15.00000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
H    0     0                      10.0000000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
     0     0    0.68824    0   26    7.00000    0.68824  90.2%     -    0s
H    0     0                       6.0000000    0.68824  88.5%     -    0s
     0     0    0.72800    0   28    6.00000    0.72800  87.9%     -    0s
     0     0    0.72800    0   28    6.00000    0.72800  87.9%     -    0s
     0     0    0.72800    0   28    6.00000    0.72800  87.9%     -    0s
H    0     0                       5.0000000    0.72800  85.4%     -    0s
     0     2    0.73871    0   28    5.00000    0.73871  85.2%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 3
  Mod-K: 2

Explored 12 nodes (284 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%