Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:37 2012 Optimize a model with 986 rows, 64 columns and 1972 nonzeros Presolve removed 695 rows and 0 columns Presolve time: 0.01s Presolved: 291 rows, 64 columns, 1693 nonzeros Variable types: 0 continuous, 64 integer (64 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.070829e+01, 142 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.70829 0 62 7.00000 10.70829 53.0% - 0s 0 0 10.47097 0 64 7.00000 10.47097 49.6% - 0s H 0 0 8.0000000 10.47097 30.9% - 0s 0 0 10.42110 0 61 8.00000 10.42110 30.3% - 0s 0 0 10.40071 0 63 8.00000 10.40071 30.0% - 0s 0 0 10.38198 0 64 8.00000 10.38198 29.8% - 0s 0 0 10.37281 0 64 8.00000 10.37281 29.7% - 0s 0 0 10.36690 0 64 8.00000 10.36690 29.6% - 0s 0 0 10.35688 0 64 8.00000 10.35688 29.5% - 0s 0 0 10.35597 0 64 8.00000 10.35597 29.4% - 0s 0 2 10.35435 0 64 8.00000 10.35435 29.4% - 0s Cutting planes: Gomory: 2 Clique: 27 Zero half: 7 Explored 24 nodes (1414 simplex iterations) in 0.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%