Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:02 2012 Optimize a model with 158 rows, 75 columns and 316 nonzeros Presolve removed 47 rows and 15 columns Presolve time: 0.00s Presolved: 111 rows, 60 columns, 232 nonzeros Variable types: 0 continuous, 60 integer (60 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 3.625000e+01, 68 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36.25000 0 39 33.00000 36.25000 9.85% - 0s H 0 0 36.0000000 36.25000 0.69% - 0s Explored 0 nodes (92 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%