Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:39 2012

Optimize a model with 179 rows, 130 columns and 575 nonzeros
Presolve time: 0.00s
Presolved: 179 rows, 130 columns, 575 nonzeros
Variable types: 0 continuous, 130 integer (130 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 0.000000e+00, 73 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   41   38.00000    0.00000   100%     -    0s
H    0     0                      32.0000000    0.00000   100%     -    0s
     0     0    0.63171    0   43   32.00000    0.63171  98.0%     -    0s
     0     0    0.64878    0   43   32.00000    0.64878  98.0%     -    0s
     0     0    0.70000    0   43   32.00000    0.70000  97.8%     -    0s
     0     0    0.73415    0   43   32.00000    0.73415  97.7%     -    0s
H    0     0                      29.0000000    0.73415  97.5%     -    0s
     0     0    0.73415    0   43   29.00000    0.73415  97.5%     -    0s
     0     0    0.73415    0   43   29.00000    0.73415  97.5%     -    0s
H    0     0                      28.0000000    0.73415  97.4%     -    0s
     0     2    0.81429    0   43   28.00000    0.81429  97.1%     -    0s
*   15    15              11      22.0000000    4.06304  81.5%  29.9    0s
*   35    25              13      21.0000000    4.09000  80.5%  23.7    0s
*   73    38              12      20.0000000    7.24138  63.8%  19.6    0s
*   75    32              10      18.0000000    7.24138  59.8%  19.2    0s

Cutting planes:
  Gomory: 1
  Mod-K: 6

Explored 244 nodes (4441 simplex iterations) in 0.16 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%