Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:36 2012 Optimize a model with 60 rows, 33 columns and 120 nonzeros Presolve removed 29 rows and 12 columns Presolve time: 0.00s Presolved: 31 rows, 21 columns, 64 nonzeros Variable types: 0 continuous, 21 integer (21 binary) Found heuristic solution: objective 15.0000000 Root relaxation: objective 1.600000e+01, 22 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 16.0000000 16.00000 0.0% - 0s Explored 0 nodes (22 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%