Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:04 2012 Optimize a model with 1355 rows, 73 columns and 2710 nonzeros Presolve removed 968 rows and 0 columns Presolve time: 0.03s Presolved: 387 rows, 73 columns, 2512 nonzeros Variable types: 0 continuous, 73 integer (73 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.130852e+01, 212 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.30852 0 64 7.00000 11.30852 61.6% - 0s H 0 0 8.0000000 11.30852 41.4% - 0s 0 0 10.75295 0 68 8.00000 10.75295 34.4% - 0s H 0 0 9.0000000 10.75295 19.5% - 0s 0 0 10.70125 0 71 9.00000 10.70125 18.9% - 0s 0 0 10.68386 0 69 9.00000 10.68386 18.7% - 0s 0 0 10.66859 0 68 9.00000 10.66859 18.5% - 0s 0 0 10.65877 0 68 9.00000 10.65877 18.4% - 0s 0 0 10.65830 0 68 9.00000 10.65830 18.4% - 0s 0 0 10.65799 0 68 9.00000 10.65799 18.4% - 0s 0 2 10.65409 0 68 9.00000 10.65409 18.4% - 0s Cutting planes: Clique: 31 Zero half: 3 Explored 11 nodes (850 simplex iterations) in 0.24 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%