Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:24 2012

Optimize a model with 359 rows, 120 columns and 718 nonzeros
Presolve removed 66 rows and 3 columns
Presolve time: 0.00s
Presolved: 293 rows, 117 columns, 619 nonzeros
Variable types: 0 continuous, 117 integer (117 binary)
Found heuristic solution: objective 44.0000000

Root relaxation: objective 5.250000e+01, 196 iterations, 0.00 seconds

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

     0     0   52.50000    0   97   44.00000   52.50000  19.3%     -    0s
     0     0   51.53333    0  113   44.00000   51.53333  17.1%     -    0s
H    0     0                      46.0000000   51.53333  12.0%     -    0s
     0     0   50.50000    0  113   46.00000   50.50000  9.78%     -    0s
     0     0   50.05556    0  116   46.00000   50.05556  8.82%     -    0s
     0     0   49.68421    0  116   46.00000   49.68421  8.01%     -    0s
     0     0   49.49353    0  117   46.00000   49.49353  7.59%     -    0s
     0     0   49.27106    0  115   46.00000   49.27106  7.11%     -    0s
     0     0   49.23318    0  115   46.00000   49.23318  7.03%     -    0s
     0     0   49.23318    0  115   46.00000   49.23318  7.03%     -    0s
     0     2   49.20096    0  114   46.00000   49.20096  6.96%     -    0s
*   38     5               4      47.0000000   48.18750  2.53%  27.7    0s

Cutting planes:
  Zero half: 55

Explored 44 nodes (1713 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%