Gurobi 5.0.1 (linux64) logging started Tue Nov 20 13:26:29 2012

Optimize a model with 835 rows, 179 columns and 1670 nonzeros
Presolve removed 202 rows and 0 columns
Presolve time: 0.00s
Presolved: 633 rows, 179 columns, 1413 nonzeros
Variable types: 0 continuous, 179 integer (179 binary)
Found heuristic solution: objective 48.0000000

Root relaxation: objective 7.008099e+01, 382 iterations, 0.01 seconds

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

     0     0   70.08099    0  173   48.00000   70.08099  46.0%     -    0s
H    0     0                      53.0000000   70.08099  32.2%     -    0s
     0     0   68.87084    0  178   53.00000   68.87084  29.9%     -    0s
H    0     0                      54.0000000   68.87084  27.5%     -    0s
     0     0   68.40773    0  177   54.00000   68.40773  26.7%     -    0s
     0     0   68.08537    0  175   54.00000   68.08537  26.1%     -    0s
     0     0   67.92289    0  178   54.00000   67.92289  25.8%     -    0s
     0     0   67.54344    0  178   54.00000   67.54344  25.1%     -    0s
     0     0   67.26404    0  175   54.00000   67.26404  24.6%     -    0s
     0     0   67.03776    0  177   54.00000   67.03776  24.1%     -    0s
     0     0   66.83102    0  178   54.00000   66.83102  23.8%     -    0s
     0     0   66.68397    0  177   54.00000   66.68397  23.5%     -    0s
H    0     0                      55.0000000   66.68397  21.2%     -    0s
     0     0   66.57554    0  176   55.00000   66.57554  21.0%     -    0s
     0     0   66.53357    0  176   55.00000   66.53357  21.0%     -    0s
H    0     0                      56.0000000   66.53357  18.8%     -    0s
H    0     0                      57.0000000   66.53357  16.7%     -    0s
     0     0   66.50970    0  176   57.00000   66.50970  16.7%     -    0s
     0     0   66.50970    0  176   57.00000   66.50970  16.7%     -    0s
     0     2   66.50822    0  176   57.00000   66.50822  16.7%     -    0s
H   13    11                      58.0000000   66.49555  14.6%  84.4    0s
   640   201   62.14286   24  150   58.00000   63.61429  9.68%  56.4    5s
  2677   613   59.31250   22  117   58.00000   61.80000  6.55%  44.7   10s

Cutting planes:
  Gomory: 6
  Zero half: 67

Explored 5407 nodes (201998 simplex iterations) in 14.21 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%