Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:31:58 2012 Optimize a model with 65 rows, 52 columns and 130 nonzeros Presolve removed 46 rows and 35 columns Presolve time: 0.00s Presolved: 19 rows, 17 columns, 39 nonzeros Variable types: 0 continuous, 17 integer (17 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 2.825000e+01, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28.25000 0 17 27.00000 28.25000 4.63% - 0s H 0 0 28.0000000 28.25000 0.89% - 0s Explored 0 nodes (19 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%