Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:38 2012

Optimize a model with 93 rows, 47 columns and 186 nonzeros
Presolve removed 43 rows and 14 columns
Presolve time: 0.00s
Presolved: 50 rows, 33 columns, 103 nonzeros
Variable types: 0 continuous, 33 integer (33 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 2.183333e+01, 44 iterations, 0.00 seconds

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

     0     0   21.83333    0   33   20.00000   21.83333  9.17%     -    0s
H    0     0                      21.0000000   21.83333  3.97%     -    0s

Explored 0 nodes (50 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%