Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:19:44 2012

Optimize a model with 223 rows, 174 columns and 729 nonzeros
Presolve time: 0.00s
Presolved: 223 rows, 174 columns, 729 nonzeros
Variable types: 0 continuous, 174 integer (174 binary)
Found heuristic solution: objective 42.0000000

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   63   42.00000    0.00000   100%     -    0s
H    0     0                      31.0000000    0.00000   100%     -    0s
     0     0    0.84211    0   65   31.00000    0.84211  97.3%     -    0s
     0     0    0.95948    0   67   31.00000    0.95948  96.9%     -    0s
     0     0    0.98393    0   65   31.00000    0.98393  96.8%     -    0s
     0     0    0.99280    0   66   31.00000    0.99280  96.8%     -    0s
     0     0    0.99280    0   66   31.00000    0.99280  96.8%     -    0s
     0     2    1.14035    0   66   31.00000    1.14035  96.3%     -    0s
*   25    25              16      20.0000000    3.35486  83.2%  21.8    0s
*   30    25              18      19.0000000    3.35486  82.3%  19.1    0s
*   77    41              16      18.0000000    6.31222  64.9%  21.8    0s
*  836    22              10      17.0000000   14.71660  13.4%  16.5    0s

Cutting planes:
  Gomory: 1
  Zero half: 6

Explored 867 nodes (14389 simplex iterations) in 0.46 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%