Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:21 2012

Optimize a model with 89 rows, 72 columns and 292 nonzeros
Presolve time: 0.00s
Presolved: 89 rows, 72 columns, 292 nonzeros
Variable types: 0 continuous, 72 integer (72 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 0.000000e+00, 43 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   27   23.00000    0.00000   100%     -    0s
H    0     0                      19.0000000    0.00000   100%     -    0s
H    0     0                      17.0000000    0.00000   100%     -    0s
     0     0    0.36305    0   29   17.00000    0.36305  97.9%     -    0s
     0     0    0.98789    0   31   17.00000    0.98789  94.2%     -    0s
     0     0    1.02048    0   31   17.00000    1.02048  94.0%     -    0s
H    0     0                      15.0000000    1.02048  93.2%     -    0s
H    0     0                      14.0000000    1.02048  92.7%     -    0s
H    0     0                      13.0000000    1.02048  92.2%     -    0s
     0     0    1.03732    0   30   13.00000    1.03732  92.0%     -    0s
     0     0    1.03732    0   30   13.00000    1.03732  92.0%     -    0s
H    0     0                      11.0000000    1.03732  90.6%     -    0s
H    0     0                       9.0000000    1.03732  88.5%     -    0s
     0     2    1.04695    0   30    9.00000    1.04695  88.4%     -    0s

Cutting planes:
  Gomory: 2
  Mod-K: 1

Explored 35 nodes (544 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%