Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:54 2012 Optimize a model with 2577 rows, 102 columns and 5154 nonzeros Presolve removed 1839 rows and 0 columns Presolve time: 0.08s Presolved: 738 rows, 102 columns, 5010 nonzeros Variable types: 0 continuous, 102 integer (102 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.457140e+01, 373 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.57140 0 97 7.00000 14.57140 108% - 0s H 0 0 8.0000000 14.57140 82.1% - 0s 0 0 14.15698 0 102 8.00000 14.15698 77.0% - 0s 0 0 14.04508 0 102 8.00000 14.04508 75.6% - 0s 0 0 14.02917 0 102 8.00000 14.02917 75.4% - 0s H 0 0 9.0000000 14.02917 55.9% - 0s 0 0 14.00478 0 101 9.00000 14.00478 55.6% - 0s 0 0 13.99535 0 101 9.00000 13.99535 55.5% - 0s 0 0 13.99225 0 101 9.00000 13.99225 55.5% - 0s 0 0 13.99162 0 101 9.00000 13.99162 55.5% - 0s 0 0 13.99129 0 101 9.00000 13.99129 55.5% - 0s 0 2 13.98576 0 101 9.00000 13.98576 55.4% - 0s Cutting planes: Clique: 63 Zero half: 4 Explored 204 nodes (12621 simplex iterations) in 1.62 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%