Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:15 2012

Optimize a model with 332 rows, 110 columns and 664 nonzeros
Presolve removed 77 rows and 7 columns
Presolve time: 0.00s
Presolved: 255 rows, 103 columns, 540 nonzeros
Variable types: 0 continuous, 103 integer (103 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.750000e+01, 157 iterations, 0.00 seconds

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

     0     0   47.50000    0   85   39.00000   47.50000  21.8%     -    0s
H    0     0                      41.0000000   47.50000  15.9%     -    0s
     0     0   46.75000    0   95   41.00000   46.75000  14.0%     -    0s
     0     0   46.09091    0  100   41.00000   46.09091  12.4%     -    0s
     0     0   45.63636    0  100   41.00000   45.63636  11.3%     -    0s
     0     0   45.44500    0  101   41.00000   45.44500  10.8%     -    0s
     0     0   45.30645    0  102   41.00000   45.30645  10.5%     -    0s
H    0     0                      42.0000000   45.30645  7.87%     -    0s
H    0     0                      43.0000000   45.30645  5.36%     -    0s
     0     0   45.21429    0   99   43.00000   45.21429  5.15%     -    0s
     0     0   45.15152    0   98   43.00000   45.15152  5.00%     -    0s
     0     0   45.06897    0   98   43.00000   45.06897  4.81%     -    0s
     0     0   45.01737    0  103   43.00000   45.01737  4.69%     -    0s
     0     0   45.00779    0  103   43.00000   45.00779  4.67%     -    0s
     0     0   45.00779    0  100   43.00000   45.00779  4.67%     -    0s
     0     2   44.96482    0  100   43.00000   44.96482  4.57%     -    0s

Cutting planes:
  Zero half: 29

Explored 13 nodes (829 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%