Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:22:24 2012

Optimize a model with 225 rows, 181 columns and 741 nonzeros
Presolve time: 0.00s
Presolved: 225 rows, 181 columns, 741 nonzeros
Variable types: 0 continuous, 181 integer (181 binary)
Found heuristic solution: objective 46.0000000

Root relaxation: objective 0.000000e+00, 98 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   67   46.00000    0.00000   100%     -    0s
H    0     0                      31.0000000    0.00000   100%     -    0s
     0     0    0.47783    0   70   31.00000    0.47783  98.5%     -    0s
     0     0    0.92912    0   74   31.00000    0.92912  97.0%     -    0s
H    0     0                      27.0000000    0.92912  96.6%     -    0s
     0     0    0.95697    0   73   27.00000    0.95697  96.5%     -    0s
     0     0    0.95756    0   75   27.00000    0.95756  96.5%     -    0s
H    0     0                      26.0000000    0.95756  96.3%     -    0s
H    0     0                      25.0000000    0.95756  96.2%     -    0s
     0     2    0.96050    0   75   25.00000    0.96050  96.2%     -    0s
*   33    28              22      21.0000000    1.99281  90.5%  20.0    0s
H   60    39                      19.0000000    3.94928  79.2%  19.9    0s
*   83    47              15      18.0000000    4.20208  76.7%  21.8    0s
*  141    77              21      17.0000000    4.27837  74.8%  22.5    0s
*  304    88              13      16.0000000    6.53076  59.2%  20.0    0s
*  370    85              10      15.0000000    7.19433  52.0%  20.0    0s

Cutting planes:
  Gomory: 4
  Zero half: 4

Explored 964 nodes (18454 simplex iterations) in 0.57 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%