Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:37 2013 Optimize a model with 30 rows, 221 columns and 2048 nonzeros Presolve removed 12 rows and 12 columns Presolve time: 0.00s Presolved: 18 rows, 209 columns, 1824 nonzeros Variable types: 201 continuous, 8 integer (8 binary) Found heuristic solution: objective 2148.8203230 Root relaxation: objective 2.147622e+03, 12 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2147.62247 0 6 2148.82032 2147.62247 0.06% - 0s 0 0 2148.17825 0 6 2148.82032 2148.17825 0.03% - 0s Cutting planes: Implied bound: 5 Flow cover: 1 Explored 0 nodes (29 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.148820323028e+03, best bound 2.148820323028e+03, gap 0.0%