Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:49 2012 Optimize a model with 1148 rows, 69 columns and 2296 nonzeros Presolve removed 763 rows and 0 columns Presolve time: 0.02s Presolved: 385 rows, 69 columns, 2266 nonzeros Variable types: 0 continuous, 69 integer (69 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.160876e+01, 242 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.60876 0 64 7.00000 11.60876 65.8% - 0s 0 0 11.37833 0 69 7.00000 11.37833 62.5% - 0s 0 0 11.35135 0 69 7.00000 11.35135 62.2% - 0s 0 0 11.34647 0 69 7.00000 11.34647 62.1% - 0s 0 0 11.33358 0 68 7.00000 11.33358 61.9% - 0s 0 0 11.32279 0 68 7.00000 11.32279 61.8% - 0s 0 0 11.28280 0 69 7.00000 11.28280 61.2% - 0s 0 0 11.25905 0 69 7.00000 11.25905 60.8% - 0s H 0 0 8.0000000 11.25905 40.7% - 0s 0 0 11.25793 0 69 8.00000 11.25793 40.7% - 0s 0 0 11.25453 0 69 8.00000 11.25453 40.7% - 0s 0 0 11.25000 0 68 8.00000 11.25000 40.6% - 0s 0 0 11.24615 0 69 8.00000 11.24615 40.6% - 0s 0 0 11.24300 0 69 8.00000 11.24300 40.5% - 0s 0 0 11.23430 0 69 8.00000 11.23430 40.4% - 0s 0 0 11.23287 0 69 8.00000 11.23287 40.4% - 0s 0 0 11.23170 0 69 8.00000 11.23170 40.4% - 0s 0 2 11.23117 0 69 8.00000 11.23117 40.4% - 0s Cutting planes: Clique: 34 Zero half: 8 Explored 59 nodes (2882 simplex iterations) in 0.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%