Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:47:43 2012 Optimize a model with 2376 rows, 98 columns and 4752 nonzeros Presolve removed 1676 rows and 0 columns Presolve time: 0.08s Presolved: 700 rows, 98 columns, 4740 nonzeros Variable types: 0 continuous, 98 integer (98 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.362763e+01, 431 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.62763 0 98 7.00000 13.62763 94.7% - 0s 0 0 13.38213 0 98 7.00000 13.38213 91.2% - 0s 0 0 13.28224 0 97 7.00000 13.28224 89.7% - 0s H 0 0 8.0000000 13.28224 66.0% - 0s 0 0 13.27056 0 98 8.00000 13.27056 65.9% - 0s 0 0 13.25513 0 97 8.00000 13.25513 65.7% - 0s 0 0 13.25341 0 98 8.00000 13.25341 65.7% - 0s H 0 0 9.0000000 13.25341 47.3% - 0s 0 2 13.25314 0 98 9.00000 13.25314 47.3% - 0s Cutting planes: Clique: 46 Zero half: 2 Explored 99 nodes (7841 simplex iterations) in 1.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%