Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:47:40 2012 Optimize a model with 2369 rows, 98 columns and 4738 nonzeros Presolve removed 1683 rows and 0 columns Presolve time: 0.07s Presolved: 686 rows, 98 columns, 4595 nonzeros Variable types: 0 continuous, 98 integer (98 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.383960e+01, 418 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.83960 0 93 8.00000 13.83960 73.0% - 0s H 0 0 9.0000000 13.83960 53.8% - 0s 0 0 13.57093 0 96 9.00000 13.57093 50.8% - 0s 0 0 13.47278 0 96 9.00000 13.47278 49.7% - 0s 0 0 13.46733 0 98 9.00000 13.46733 49.6% - 0s 0 0 13.46602 0 98 9.00000 13.46602 49.6% - 0s 0 0 13.46479 0 98 9.00000 13.46479 49.6% - 0s 0 0 13.46462 0 98 9.00000 13.46462 49.6% - 0s 0 0 13.45530 0 98 9.00000 13.45530 49.5% - 0s 0 0 13.43796 0 97 9.00000 13.43796 49.3% - 0s 0 0 13.43136 0 98 9.00000 13.43136 49.2% - 1s 0 0 13.40793 0 98 9.00000 13.40793 49.0% - 1s 0 0 13.40649 0 98 9.00000 13.40649 49.0% - 1s 0 0 13.40636 0 98 9.00000 13.40636 49.0% - 1s 0 2 13.40507 0 98 9.00000 13.40507 48.9% - 1s Cutting planes: Clique: 57 Zero half: 2 Explored 121 nodes (9013 simplex iterations) in 1.96 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%