Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:43 2012 Optimize a model with 212 rows, 69 columns and 424 nonzeros Presolve removed 60 rows and 3 columns Presolve time: 0.00s Presolved: 152 rows, 66 columns, 337 nonzeros Variable types: 0 continuous, 66 integer (66 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 2.950000e+01, 94 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 29.50000 0 59 27.00000 29.50000 9.26% - 0s 0 0 28.92308 0 65 27.00000 28.92308 7.12% - 0s H 0 0 28.0000000 28.92308 3.30% - 0s Cutting planes: Gomory: 2 Zero half: 6 Explored 0 nodes (142 simplex iterations) in 0.01 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%