Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:36 2012 Optimize a model with 80 rows, 38 columns and 160 nonzeros Presolve removed 70 rows and 29 columns Presolve time: 0.00s Presolved: 10 rows, 9 columns, 21 nonzeros Variable types: 0 continuous, 9 integer (9 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 1.800000e+01, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 18.0000000 18.00000 0.0% - 0s Explored 0 nodes (6 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%