Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:40 2012

Optimize a model with 171 rows, 141 columns and 566 nonzeros
Presolve time: 0.00s
Presolved: 171 rows, 141 columns, 566 nonzeros
Variable types: 0 continuous, 141 integer (141 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 0.000000e+00, 85 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   56   40.00000    0.00000   100%     -    0s
H    0     0                      36.0000000    0.00000   100%     -    0s
H    0     0                      31.0000000    0.00000   100%     -    0s
     0     0    0.38889    0   58   31.00000    0.38889  98.7%     -    0s
H    0     0                      26.0000000    0.38889  98.5%     -    0s
     0     0    1.21207    0   62   26.00000    1.21207  95.3%     -    0s
     0     0    1.22029    0   61   26.00000    1.22029  95.3%     -    0s
H    0     0                      25.0000000    1.22029  95.1%     -    0s
H    0     0                      22.0000000    1.22029  94.5%     -    0s
H    0     0                      20.0000000    1.22029  93.9%     -    0s
     0     2    1.22400    0   61   20.00000    1.22400  93.9%     -    0s
*   23    23              14      16.0000000    2.86974  82.1%  21.1    0s
*   39    28              10      15.0000000    2.88531  80.8%  19.6    0s
H   55    24                      12.0000000    4.71593  60.7%  18.1    0s

Cutting planes:
  Gomory: 4
  Mod-K: 2

Explored 182 nodes (3711 simplex iterations) in 0.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%