Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:09 2012

Optimize a model with 251 rows, 100 columns and 502 nonzeros
Presolve removed 82 rows and 18 columns
Presolve time: 0.00s
Presolved: 169 rows, 82 columns, 354 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 4.700000e+01, 90 iterations, 0.00 seconds

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

*    0     0               0      47.0000000   47.00000   0.0%     -    0s

Explored 0 nodes (90 simplex iterations) in 0.00 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%