Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:50 2012 Optimize a model with 2206 rows, 94 columns and 4412 nonzeros Presolve removed 1585 rows and 0 columns Presolve time: 0.06s Presolved: 621 rows, 94 columns, 4175 nonzeros Variable types: 0 continuous, 94 integer (94 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.372368e+01, 364 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.72368 0 88 6.00000 13.72368 129% - 0s H 0 0 7.0000000 13.72368 96.1% - 0s H 0 0 8.0000000 13.72368 71.5% - 0s 0 0 13.38785 0 92 8.00000 13.38785 67.3% - 0s 0 0 13.29944 0 92 8.00000 13.29944 66.2% - 0s H 0 0 9.0000000 13.29944 47.8% - 0s 0 0 13.26317 0 91 9.00000 13.26317 47.4% - 0s 0 0 13.23985 0 92 9.00000 13.23985 47.1% - 0s 0 0 13.21809 0 91 9.00000 13.21809 46.9% - 0s 0 0 13.21501 0 92 9.00000 13.21501 46.8% - 0s 0 0 13.21427 0 93 9.00000 13.21427 46.8% - 0s 0 0 13.21420 0 93 9.00000 13.21420 46.8% - 0s 0 2 13.20905 0 93 9.00000 13.20905 46.8% - 0s Cutting planes: Clique: 70 Zero half: 1 Explored 103 nodes (6714 simplex iterations) in 1.16 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%