Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:50:00 2012 Optimize a model with 2785 rows, 105 columns and 5570 nonzeros Presolve removed 2011 rows and 0 columns Presolve time: 0.08s Presolved: 774 rows, 105 columns, 5378 nonzeros Variable types: 0 continuous, 105 integer (105 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.432321e+01, 404 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.32321 0 101 6.00000 14.32321 139% - 0s H 0 0 7.0000000 14.32321 105% - 0s 0 0 14.01599 0 104 7.00000 14.01599 100% - 0s 0 0 13.93234 0 105 7.00000 13.93234 99.0% - 0s H 0 0 8.0000000 13.93234 74.2% - 0s 0 0 13.82907 0 105 8.00000 13.82907 72.9% - 0s 0 0 13.81836 0 105 8.00000 13.81836 72.7% - 0s 0 0 13.80971 0 105 8.00000 13.80971 72.6% - 0s 0 0 13.80429 0 104 8.00000 13.80429 72.6% - 0s 0 0 13.77529 0 104 8.00000 13.77529 72.2% - 0s 0 0 13.77457 0 104 8.00000 13.77457 72.2% - 1s 0 0 13.77443 0 104 8.00000 13.77443 72.2% - 1s H 0 0 9.0000000 13.77443 53.0% - 1s 0 0 13.77441 0 104 9.00000 13.77441 53.0% - 1s 0 2 13.77365 0 104 9.00000 13.77365 53.0% - 1s Cutting planes: Clique: 82 Zero half: 1 Explored 167 nodes (11415 simplex iterations) in 2.12 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%