Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:14 2012 Optimize a model with 487 rows, 44 columns and 974 nonzeros Presolve removed 353 rows and 0 columns Presolve time: 0.01s Presolved: 134 rows, 44 columns, 741 nonzeros Variable types: 0 continuous, 44 integer (44 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 8.281046e+00, 75 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8.28105 0 36 5.00000 8.28105 65.6% - 0s H 0 0 6.0000000 8.28105 38.0% - 0s 0 0 7.93775 0 36 6.00000 7.93775 32.3% - 0s H 0 0 7.0000000 7.93775 13.4% - 0s Cutting planes: Gomory: 1 Clique: 3 Zero half: 8 Explored 0 nodes (115 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%