Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:43 2012 Optimize a model with 208 rows, 68 columns and 416 nonzeros Presolve removed 46 rows and 0 columns Presolve time: 0.00s Presolved: 162 rows, 68 columns, 354 nonzeros Variable types: 0 continuous, 68 integer (68 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 2.800000e+01, 106 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28.00000 0 61 26.00000 28.00000 7.69% - 0s 0 0 27.78947 0 67 26.00000 27.78947 6.88% - 0s 0 0 27.38462 0 56 26.00000 27.38462 5.33% - 0s 0 0 cutoff 0 26.00000 26.99997 3.85% - 0s Cutting planes: Gomory: 2 Zero half: 48 Explored 0 nodes (273 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%