Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:17 2012

Optimize a model with 358 rows, 114 columns and 716 nonzeros
Presolve removed 59 rows and 3 columns
Presolve time: 0.00s
Presolved: 299 rows, 111 columns, 630 nonzeros
Variable types: 0 continuous, 111 integer (111 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 5.150000e+01, 165 iterations, 0.00 seconds

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

     0     0   51.50000    0   93   43.00000   51.50000  19.8%     -    0s
     0     0   50.16667    0  108   43.00000   50.16667  16.7%     -    0s
     0     0   49.30000    0  108   43.00000   49.30000  14.7%     -    0s
     0     0   48.62500    0  104   43.00000   48.62500  13.1%     -    0s
     0     0   48.23529    0  102   43.00000   48.23529  12.2%     -    0s
     0     0   48.04651    0  110   43.00000   48.04651  11.7%     -    0s
     0     0   47.92424    0  110   43.00000   47.92424  11.5%     -    0s
     0     0   47.71831    0  111   43.00000   47.71831  11.0%     -    0s
     0     0   47.58415    0  108   43.00000   47.58415  10.7%     -    0s
     0     0   47.54456    0  111   43.00000   47.54456  10.6%     -    0s
     0     0   47.54456    0  111   43.00000   47.54456  10.6%     -    0s
H    0     0                      44.0000000   47.54456  8.06%     -    0s
H    0     0                      45.0000000   47.54456  5.65%     -    0s
     0     2   47.54318    0  111   45.00000   47.54318  5.65%     -    0s

Cutting planes:
  Zero half: 70

Explored 31 nodes (1558 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%