Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:25 2012

Optimize a model with 207 rows, 158 columns and 673 nonzeros
Presolve time: 0.00s
Presolved: 207 rows, 158 columns, 673 nonzeros
Variable types: 0 continuous, 158 integer (158 binary)
Found heuristic solution: objective 49.0000000

Root relaxation: objective 0.000000e+00, 87 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   54   49.00000    0.00000   100%     -    0s
H    0     0                      35.0000000    0.00000   100%     -    0s
H    0     0                      31.0000000    0.00000   100%     -    0s
     0     0    0.35365    0   56   31.00000    0.35365  98.9%     -    0s
     0     0    0.91136    0   59   31.00000    0.91136  97.1%     -    0s
H    0     0                      29.0000000    0.91136  96.9%     -    0s
H    0     0                      28.0000000    0.91136  96.7%     -    0s
     0     0    0.95525    0   58   28.00000    0.95525  96.6%     -    0s
     0     0    0.96317    0   59   28.00000    0.96317  96.6%     -    0s
     0     2    0.98985    0   59   28.00000    0.98985  96.5%     -    0s
H   27    27                      20.0000000    3.61512  81.9%  23.0    0s
*   48    35              13      19.0000000    3.67981  80.6%  22.9    0s
*   68    36              11      18.0000000    5.57143  69.0%  21.8    0s
*   82    38              12      16.0000000    5.58333  65.1%  21.2    0s
*   99    30              11      15.0000000    8.07692  46.2%  21.5    0s

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

Explored 217 nodes (4528 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%