Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:12 2012 Optimize a model with 2430 rows, 99 columns and 4860 nonzeros Presolve removed 1702 rows and 0 columns Presolve time: 0.07s Presolved: 728 rows, 99 columns, 4933 nonzeros Variable types: 0 continuous, 99 integer (99 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.419302e+01, 414 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.19302 0 89 6.00000 14.19302 137% - 0s H 0 0 7.0000000 14.19302 103% - 0s H 0 0 9.0000000 14.19302 57.7% - 0s 0 0 13.78227 0 93 9.00000 13.78227 53.1% - 0s 0 0 13.62650 0 94 9.00000 13.62650 51.4% - 0s 0 0 13.55362 0 94 9.00000 13.55362 50.6% - 0s 0 0 13.52783 0 96 9.00000 13.52783 50.3% - 0s 0 0 13.52443 0 96 9.00000 13.52443 50.3% - 0s 0 0 13.52305 0 97 9.00000 13.52305 50.3% - 0s 0 0 13.52229 0 97 9.00000 13.52229 50.2% - 0s 0 2 13.52039 0 97 9.00000 13.52039 50.2% - 0s Cutting planes: Clique: 79 Zero half: 1 Explored 149 nodes (9192 simplex iterations) in 1.33 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%