Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:47:12 2012

Optimize a model with 195 rows, 144 columns and 629 nonzeros
Presolve time: 0.00s
Presolved: 195 rows, 144 columns, 629 nonzeros
Variable types: 0 continuous, 144 integer (144 binary)
Found heuristic solution: objective 42.0000000

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   47   42.00000    0.00000   100%     -    0s
H    0     0                      40.0000000    0.00000   100%     -    0s
H    0     0                      34.0000000    0.00000   100%     -    0s
     0     0    0.69632    0   49   34.00000    0.69632  98.0%     -    0s
     0     0    0.70130    0   49   34.00000    0.70130  97.9%     -    0s
     0     0    0.70130    0   49   34.00000    0.70130  97.9%     -    0s
H    0     0                      28.0000000    0.70130  97.5%     -    0s
H    0     0                      26.0000000    0.70130  97.3%     -    0s
     0     2    0.71194    0   49   26.00000    0.71194  97.3%     -    0s
*   20    20              13      24.0000000    3.68984  84.6%  27.3    0s
*   25    18              13      23.0000000    3.68984  84.0%  22.9    0s
H   27    15                      22.0000000    3.68984  83.2%  21.2    0s
*   45    28              15      21.0000000    3.70455  82.4%  19.5    0s
*  199    58              10      20.0000000   10.44444  47.8%  20.3    0s
*  295    46               9      19.0000000   12.25316  35.5%  21.0    0s

Cutting planes:
  Gomory: 1
  Zero half: 6

Explored 409 nodes (8012 simplex iterations) in 0.22 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%