Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:32 2012 Optimize a model with 2494 rows, 101 columns and 4988 nonzeros Presolve removed 1758 rows and 0 columns Presolve time: 0.08s Presolved: 736 rows, 101 columns, 4893 nonzeros Variable types: 0 continuous, 101 integer (101 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.464199e+01, 465 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.64199 0 95 8.00000 14.64199 83.0% - 0s 0 0 14.33156 0 98 8.00000 14.33156 79.1% - 0s H 0 0 9.0000000 14.33156 59.2% - 0s 0 0 14.30386 0 100 9.00000 14.30386 58.9% - 0s 0 0 14.28464 0 100 9.00000 14.28464 58.7% - 0s 0 0 14.27622 0 100 9.00000 14.27622 58.6% - 0s 0 0 14.27469 0 100 9.00000 14.27469 58.6% - 0s 0 0 14.27462 0 100 9.00000 14.27462 58.6% - 0s 0 2 14.27329 0 100 9.00000 14.27329 58.6% - 0s Cutting planes: Clique: 54 Zero half: 4 Explored 239 nodes (15261 simplex iterations) in 1.64 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%