Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:41:52 2012

Optimize a model with 353 rows, 256 columns and 1136 nonzeros
Presolve time: 0.00s
Presolved: 353 rows, 256 columns, 1136 nonzeros
Variable types: 0 continuous, 256 integer (256 binary)
Found heuristic solution: objective 75.0000000

Root relaxation: objective 0.000000e+00, 111 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   80   75.00000    0.00000   100%     -    0s
H    0     0                      73.0000000    0.00000   100%     -    0s
H    0     0                      64.0000000    0.00000   100%     -    0s
     0     0    0.61111    0   82   64.00000    0.61111  99.0%     -    0s
     0     0    0.66167    0   84   64.00000    0.66167  99.0%     -    0s
     0     0    0.76389    0   82   64.00000    0.76389  98.8%     -    0s
     0     0    0.78450    0   85   64.00000    0.78450  98.8%     -    0s
     0     0    0.80910    0   87   64.00000    0.80910  98.7%     -    0s
     0     2    0.81424    0   87   64.00000    0.81424  98.7%     -    0s
*   46    44              26      48.0000000    3.50397  92.7%  23.6    0s
H   81    68                      41.0000000    3.56631  91.3%  24.7    0s
*   82    67              24      40.0000000    3.56631  91.1%  24.8    0s
*  113    80              19      35.0000000    6.08333  82.6%  24.4    0s
H  814   313                      34.0000000   15.60714  54.1%  23.2    1s
*  817   288              26      32.0000000   15.60714  51.2%  23.1    1s

Cutting planes:
  Gomory: 1
  Mod-K: 3

Explored 2457 nodes (51724 simplex iterations) in 2.55 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%