Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:01 2012

Optimize a model with 143 rows, 124 columns and 479 nonzeros
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 143 rows, 123 columns, 478 nonzeros
Variable types: 0 continuous, 123 integer (122 binary)
Found heuristic solution: objective 32.0000000
Found heuristic solution: objective 31.0000000

Root relaxation: objective 0.000000e+00, 84 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   51   31.00000    0.00000   100%     -    0s
H    0     0                      24.0000000    0.00000   100%     -    0s
H    0     0                      16.0000000    0.00000   100%     -    0s
     0     0    0.49020    0   52   16.00000    0.49020  96.9%     -    0s
H    0     0                      13.0000000    0.49020  96.2%     -    0s
     0     0    1.00000    0   54   13.00000    1.00000  92.3%     -    0s
     0     0    1.00000    0   51   13.00000    1.00000  92.3%     -    0s
H    0     0                      12.0000000    1.00000  91.7%     -    0s
     0     2    1.00000    0   51   12.00000    1.00000  91.7%     -    0s
*   13    11               8       8.0000000    3.50467  56.2%  31.7    0s

Cutting planes:
  Gomory: 2
  Zero half: 5

Explored 39 nodes (1291 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%