Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:45:15 2012

Optimize a model with 643 rows, 162 columns and 1286 nonzeros
Presolve removed 112 rows and 2 columns
Presolve time: 0.00s
Presolved: 531 rows, 160 columns, 1124 nonzeros
Variable types: 0 continuous, 160 integer (160 binary)
Found heuristic solution: objective 53.0000000

Root relaxation: objective 6.880000e+01, 317 iterations, 0.01 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   68.80000    0  153   53.00000   68.80000  29.8%     -    0s
     0     0   67.50980    0  158   53.00000   67.50980  27.4%     -    0s
H    0     0                      57.0000000   67.50980  18.4%     -    0s
     0     0   66.53863    0  159   57.00000   66.53863  16.7%     -    0s
     0     0   65.52445    0  158   57.00000   65.52445  15.0%     -    0s
     0     0   65.25586    0  159   57.00000   65.25586  14.5%     -    0s
     0     0   65.04057    0  160   57.00000   65.04057  14.1%     -    0s
     0     0   64.74580    0  160   57.00000   64.74580  13.6%     -    0s
     0     0   64.45341    0  159   57.00000   64.45341  13.1%     -    0s
     0     0   64.33274    0  157   57.00000   64.33274  12.9%     -    0s
     0     0   64.23019    0  158   57.00000   64.23019  12.7%     -    0s
H    0     0                      58.0000000   64.23019  10.7%     -    0s
     0     0   63.96530    0  160   58.00000   63.96530  10.3%     -    0s
     0     0   63.93263    0  160   58.00000   63.93263  10.2%     -    0s
     0     0   63.93263    0  160   58.00000   63.93263  10.2%     -    0s
     0     2   63.92985    0  160   58.00000   63.92985  10.2%     -    0s

Cutting planes:
  Zero half: 149

Explored 720 nodes (29483 simplex iterations) in 1.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.800000000000e+01, best bound 5.800000000000e+01, gap 0.0%