Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:27:50 2012

Optimize a model with 263 rows, 206 columns and 861 nonzeros
Presolve time: 0.00s
Presolved: 263 rows, 206 columns, 861 nonzeros
Variable types: 0 continuous, 206 integer (206 binary)
Found heuristic solution: objective 60.0000000

Root relaxation: objective 0.000000e+00, 109 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   74   60.00000    0.00000   100%     -    0s
H    0     0                      48.0000000    0.00000   100%     -    0s
H    0     0                      45.0000000    0.00000   100%     -    0s
H    0     0                      44.0000000    0.00000   100%     -    0s
     0     0    0.74157    0   79   44.00000    0.74157  98.3%     -    0s
H    0     0                      42.0000000    0.74157  98.2%     -    0s
     0     0    0.78964    0   77   42.00000    0.78964  98.1%     -    0s
     0     0    0.81005    0   80   42.00000    0.81005  98.1%     -    0s
H    0     0                      41.0000000    0.81005  98.0%     -    0s
     0     0    0.81327    0   81   41.00000    0.81327  98.0%     -    0s
     0     0    0.81327    0   81   41.00000    0.81327  98.0%     -    0s
     0     2    0.82151    0   81   41.00000    0.82151  98.0%     -    0s
*   17    15              11      20.0000000    4.18867  79.1%  31.9    0s

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

Explored 783 nodes (14654 simplex iterations) in 0.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%