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

Optimize a model with 287 rows, 105 columns and 574 nonzeros
Presolve removed 86 rows and 15 columns
Presolve time: 0.00s
Presolved: 201 rows, 90 columns, 427 nonzeros
Variable types: 0 continuous, 90 integer (90 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 4.900000e+01, 122 iterations, 0.00 seconds

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

     0     0   49.00000    0   78   43.00000   49.00000  14.0%     -    0s
     0     0   47.50000    0   65   43.00000   47.50000  10.5%     -    0s
H    0     0                      45.0000000   47.50000  5.56%     -    0s
     0     0   47.33333    0   85   45.00000   47.33333  5.19%     -    0s
     0     0   46.65517    0   88   45.00000   46.65517  3.68%     -    0s
     0     0   46.23077    0   90   45.00000   46.23077  2.74%     -    0s
     0     0   46.17054    0   90   45.00000   46.17054  2.60%     -    0s
     0     0     cutoff    0        45.00000   45.99995  2.22%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 43

Explored 0 nodes (389 simplex iterations) in 0.02 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%