Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:44 2012 Optimize a model with 1624 rows, 81 columns and 3248 nonzeros Presolve removed 1149 rows and 0 columns Presolve time: 0.04s Presolved: 475 rows, 81 columns, 2997 nonzeros Variable types: 0 continuous, 81 integer (81 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.227053e+01, 261 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12.27053 0 71 7.00000 12.27053 75.3% - 0s 0 0 11.98563 0 78 7.00000 11.98563 71.2% - 0s 0 0 11.96390 0 79 7.00000 11.96390 70.9% - 0s 0 0 11.95152 0 80 7.00000 11.95152 70.7% - 0s 0 0 11.94019 0 78 7.00000 11.94019 70.6% - 0s 0 0 11.93540 0 79 7.00000 11.93540 70.5% - 0s H 0 0 8.0000000 11.93540 49.2% - 0s 0 0 11.93136 0 79 8.00000 11.93136 49.1% - 0s 0 0 11.92903 0 78 8.00000 11.92903 49.1% - 0s 0 0 11.92777 0 78 8.00000 11.92777 49.1% - 0s 0 0 11.91182 0 79 8.00000 11.91182 48.9% - 0s 0 0 11.91085 0 80 8.00000 11.91085 48.9% - 0s 0 0 11.90261 0 79 8.00000 11.90261 48.8% - 0s 0 0 11.89982 0 79 8.00000 11.89982 48.7% - 0s 0 0 11.89385 0 77 8.00000 11.89385 48.7% - 0s 0 0 11.87327 0 79 8.00000 11.87327 48.4% - 0s 0 0 11.86222 0 77 8.00000 11.86222 48.3% - 0s 0 0 11.84734 0 79 8.00000 11.84734 48.1% - 0s 0 0 11.84288 0 79 8.00000 11.84288 48.0% - 0s 0 0 11.84243 0 78 8.00000 11.84243 48.0% - 0s 0 2 11.84243 0 78 8.00000 11.84243 48.0% - 0s * 54 16 6 9.0000000 11.41042 26.8% 43.6 0s Cutting planes: Clique: 39 Zero half: 4 Explored 71 nodes (3520 simplex iterations) in 0.94 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%