Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:15 2012 Optimize a model with 533 rows, 45 columns and 1066 nonzeros Presolve removed 379 rows and 0 columns Presolve time: 0.01s Presolved: 154 rows, 45 columns, 873 nonzeros Variable types: 0 continuous, 45 integer (45 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 8.031677e+00, 92 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8.03168 0 43 6.00000 8.03168 33.9% - 0s 0 0 7.78745 0 42 6.00000 7.78745 29.8% - 0s 0 0 7.72348 0 41 6.00000 7.72348 28.7% - 0s H 0 0 7.0000000 7.72348 10.3% - 0s Cutting planes: Gomory: 2 Clique: 8 Zero half: 7 Explored 0 nodes (157 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%