Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:36 2012

Optimize a model with 167 rows, 120 columns and 535 nonzeros
Presolve time: 0.00s
Presolved: 167 rows, 120 columns, 535 nonzeros
Variable types: 0 continuous, 120 integer (120 binary)
Found heuristic solution: objective 35.0000000

Root relaxation: objective 0.000000e+00, 58 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   37   35.00000    0.00000   100%     -    0s
H    0     0                      33.0000000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
     0     0    0.82583    0   39   30.00000    0.82583  97.2%     -    0s
     0     0    0.96908    0   51   30.00000    0.96908  96.8%     -    0s
H    0     0                      28.0000000    0.96908  96.5%     -    0s
     0     0    0.97381    0   55   28.00000    0.97381  96.5%     -    0s
H    0     0                      27.0000000    0.97381  96.4%     -    0s
     0     2    1.01852    0   55   27.00000    1.01852  96.2%     -    0s
*   27    26              16      26.0000000    4.54186  82.5%  19.8    0s
H   29    21                      25.0000000    4.54186  81.8%  18.4    0s
*   47    34              11      24.0000000    4.67733  80.5%  18.7    0s
*   51    31              11      23.0000000    4.67733  79.7%  17.7    0s
*   64    25               8      18.0000000    6.49367  63.9%  18.3    0s

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

Explored 257 nodes (4235 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%