Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:53:17 2012 Optimize a model with 3092 rows, 112 columns and 6184 nonzeros Presolve removed 2191 rows and 0 columns Presolve time: 0.11s Presolved: 901 rows, 112 columns, 6326 nonzeros Variable types: 0 continuous, 112 integer (112 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 1.531535e+01, 380 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.31535 0 104 5.00000 15.31535 206% - 0s H 0 0 7.0000000 15.31535 119% - 0s 0 0 14.85826 0 110 7.00000 14.85826 112% - 0s H 0 0 8.0000000 14.85826 85.7% - 0s 0 0 14.82745 0 107 8.00000 14.82745 85.3% - 0s 0 0 14.78743 0 110 8.00000 14.78743 84.8% - 0s 0 0 14.76184 0 110 8.00000 14.76184 84.5% - 0s H 0 0 9.0000000 14.76184 64.0% - 0s 0 0 14.75098 0 110 9.00000 14.75098 63.9% - 0s 0 0 14.74812 0 110 9.00000 14.74812 63.9% - 0s 0 0 14.74772 0 110 9.00000 14.74772 63.9% - 1s 0 0 14.74765 0 109 9.00000 14.74765 63.9% - 1s 0 0 14.74757 0 109 9.00000 14.74757 63.9% - 1s 0 2 14.74674 0 109 9.00000 14.74674 63.9% - 1s Cutting planes: Clique: 97 Zero half: 1 Explored 418 nodes (23917 simplex iterations) in 3.22 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%