Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:11 2012

Optimize a model with 300 rows, 104 columns and 600 nonzeros
Presolve removed 73 rows and 6 columns
Presolve time: 0.00s
Presolved: 227 rows, 98 columns, 488 nonzeros
Variable types: 0 continuous, 98 integer (98 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 4.600000e+01, 153 iterations, 0.00 seconds

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

     0     0   46.00000    0   83   40.00000   46.00000  15.0%     -    0s
H    0     0                      42.0000000   46.00000  9.52%     -    0s
     0     0   45.73171    0   97   42.00000   45.73171  8.89%     -    0s
     0     0   45.15625    0   97   42.00000   45.15625  7.51%     -    0s
     0     0   44.82051    0   96   42.00000   44.82051  6.72%     -    0s
     0     0   44.50000    0   96   42.00000   44.50000  5.95%     -    0s
     0     0   44.42424    0   96   42.00000   44.42424  5.77%     -    0s
     0     0   44.36000    0   93   42.00000   44.36000  5.62%     -    0s
H    0     0                      43.0000000   44.36000  3.16%     -    0s
     0     0   44.32692    0   95   43.00000   44.32692  3.09%     -    0s
     0     0   44.29412    0   94   43.00000   44.29412  3.01%     -    0s
     0     0   44.29412    0   90   43.00000   44.29412  3.01%     -    0s
     0     0   44.26667    0   95   43.00000   44.26667  2.95%     -    0s
     0     0   44.25000    0   95   43.00000   44.25000  2.91%     -    0s
     0     0   44.25000    0   89   43.00000   44.25000  2.91%     -    0s
     0     2   44.25000    0   86   43.00000   44.25000  2.91%     -    0s

Cutting planes:
  Zero half: 23

Explored 3 nodes (635 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%