Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:01 2012 Optimize a model with 127 rows, 70 columns and 254 nonzeros Presolve removed 38 rows and 15 columns Presolve time: 0.00s Presolved: 89 rows, 55 columns, 185 nonzeros Variable types: 0 continuous, 55 integer (55 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.380000e+01, 71 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 33.80000 0 49 30.00000 33.80000 12.7% - 0s H 0 0 33.0000000 33.80000 2.42% - 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 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%