Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:09 2012

Optimize a model with 201 rows, 143 columns and 643 nonzeros
Presolve time: 0.00s
Presolved: 201 rows, 143 columns, 643 nonzeros
Variable types: 0 continuous, 143 integer (143 binary)
Found heuristic solution: objective 51.0000000

Root relaxation: objective 0.000000e+00, 68 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   43   51.00000    0.00000   100%     -    0s
H    0     0                      44.0000000    0.00000   100%     -    0s
H    0     0                      35.0000000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
     0     0    0.66886    0   45   30.00000    0.66886  97.8%     -    0s
     0     0    0.67932    0   45   30.00000    0.67932  97.7%     -    0s
     0     0    0.88926    0   46   30.00000    0.88926  97.0%     -    0s
     0     0    0.90030    0   46   30.00000    0.90030  97.0%     -    0s
     0     0    0.90802    0   46   30.00000    0.90802  97.0%     -    0s
     0     0    0.90904    0   47   30.00000    0.90904  97.0%     -    0s
H    0     0                      25.0000000    0.90904  96.4%     -    0s
     0     2    0.91198    0   47   25.00000    0.91198  96.4%     -    0s
*   74    40              12      21.0000000    5.90476  71.9%  21.2    0s
*   89    45              10      20.0000000    8.27619  58.6%  20.7    0s
*  162    42              10      19.0000000    8.85714  53.4%  18.7    0s

Cutting planes:
  Gomory: 1
  Zero half: 4
  Mod-K: 3

Explored 358 nodes (6269 simplex iterations) in 0.21 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%