Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:10 2012

Optimize a model with 53 rows, 53 columns and 183 nonzeros
Presolve time: 0.00s
Presolved: 53 rows, 53 columns, 183 nonzeros
Variable types: 0 continuous, 53 integer (53 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: objective 0.000000e+00, 33 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   19    8.00000    0.00000   100%     -    0s
H    0     0                       5.0000000    0.00000   100%     -    0s
H    0     0                       4.0000000    0.00000   100%     -    0s
H    0     0                       3.0000000    0.00000   100%     -    0s
     0     0    0.26432    0   21    3.00000    0.26432  91.2%     -    0s
     0     0    0.71324    0   24    3.00000    0.71324  76.2%     -    0s
     0     0    0.71324    0   24    3.00000    0.71324  76.2%     -    0s
     0     2    0.72917    0   24    3.00000    0.72917  75.7%     -    0s
*   50     5               8       2.0000000    1.61153  19.4%   8.1    0s

Cutting planes:
  Gomory: 4
  Zero half: 9
  Mod-K: 1

Explored 51 nodes (551 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%