Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:26 2012

Optimize a model with 408 rows, 122 columns and 816 nonzeros
Presolve removed 99 rows and 7 columns
Presolve time: 0.00s
Presolved: 309 rows, 115 columns, 662 nonzeros
Variable types: 0 continuous, 115 integer (115 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 5.350000e+01, 188 iterations, 0.00 seconds

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

     0     0   53.50000    0   99   42.00000   53.50000  27.4%     -    0s
     0     0   51.75000    0  109   42.00000   51.75000  23.2%     -    0s
     0     0   51.03061    0  115   42.00000   51.03061  21.5%     -    0s
     0     0   50.71429    0  115   42.00000   50.71429  20.7%     -    0s
     0     0   50.02174    0  114   42.00000   50.02174  19.1%     -    0s
     0     0   49.47436    0  115   42.00000   49.47436  17.8%     -    0s
H    0     0                      43.0000000   49.47436  15.1%     -    0s
     0     0   49.27924    0  114   43.00000   49.27924  14.6%     -    0s
     0     0   49.15143    0  115   43.00000   49.15143  14.3%     -    0s
H    0     0                      44.0000000   49.15143  11.7%     -    0s
     0     0   49.08125    0  115   44.00000   49.08125  11.5%     -    0s
     0     0   49.04325    0  115   44.00000   49.04325  11.5%     -    0s
     0     0   49.04325    0  110   44.00000   49.04325  11.5%     -    0s
H    0     0                      46.0000000   49.04325  6.62%     -    0s
     0     2   49.03279    0  110   46.00000   49.03279  6.59%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 64

Explored 62 nodes (2520 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%