Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:16 2012 Optimize a model with 529 rows, 46 columns and 1058 nonzeros Presolve removed 356 rows and 0 columns Presolve time: 0.01s Presolved: 173 rows, 46 columns, 953 nonzeros Variable types: 0 continuous, 46 integer (46 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 8.681004e+00, 88 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8.68100 0 45 7.00000 8.68100 24.0% - 0s 0 0 8.42561 0 42 7.00000 8.42561 20.4% - 0s 0 0 8.30612 0 43 7.00000 8.30612 18.7% - 0s 0 0 8.25367 0 43 7.00000 8.25367 17.9% - 0s 0 0 8.25093 0 44 7.00000 8.25093 17.9% - 0s 0 2 8.24741 0 44 7.00000 8.24741 17.8% - 0s Cutting planes: Clique: 18 Zero half: 7 Explored 3 nodes (285 simplex iterations) in 0.05 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%