Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:46 2012 Optimize a model with 1980 rows, 89 columns and 3960 nonzeros Presolve removed 1432 rows and 0 columns Presolve time: 0.05s Presolved: 548 rows, 89 columns, 3626 nonzeros Variable types: 0 continuous, 89 integer (89 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 1.298164e+01, 334 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12.98164 0 85 5.00000 12.98164 160% - 0s H 0 0 7.0000000 12.98164 85.5% - 0s H 0 0 8.0000000 12.98164 62.3% - 0s 0 0 12.65304 0 89 8.00000 12.65304 58.2% - 0s H 0 0 9.0000000 12.65304 40.6% - 0s 0 0 12.55660 0 88 9.00000 12.55660 39.5% - 0s 0 0 12.53002 0 89 9.00000 12.53002 39.2% - 0s 0 0 12.50979 0 89 9.00000 12.50979 39.0% - 0s 0 0 12.49936 0 89 9.00000 12.49936 38.9% - 0s 0 0 12.48801 0 89 9.00000 12.48801 38.8% - 0s 0 0 12.47422 0 89 9.00000 12.47422 38.6% - 0s 0 0 12.45150 0 89 9.00000 12.45150 38.4% - 0s 0 0 12.43024 0 89 9.00000 12.43024 38.1% - 0s 0 0 12.42139 0 89 9.00000 12.42139 38.0% - 0s 0 0 12.41300 0 89 9.00000 12.41300 37.9% - 0s 0 0 12.41261 0 89 9.00000 12.41261 37.9% - 0s 0 0 12.41259 0 89 9.00000 12.41259 37.9% - 0s 0 2 12.41259 0 89 9.00000 12.41259 37.9% - 0s Cutting planes: Clique: 41 Zero half: 5 Explored 49 nodes (4393 simplex iterations) in 1.06 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%