Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:06 2012 Optimize a model with 1747 rows, 84 columns and 3494 nonzeros Presolve removed 1217 rows and 0 columns Presolve time: 0.04s Presolved: 530 rows, 84 columns, 3509 nonzeros Variable types: 0 continuous, 84 integer (84 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.258992e+01, 286 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12.58992 0 74 6.00000 12.58992 110% - 0s H 0 0 7.0000000 12.58992 79.9% - 0s 0 0 12.08769 0 81 7.00000 12.08769 72.7% - 0s 0 0 12.05561 0 81 7.00000 12.05561 72.2% - 0s H 0 0 9.0000000 12.05561 34.0% - 0s 0 0 12.02628 0 82 9.00000 12.02628 33.6% - 0s 0 0 12.02273 0 82 9.00000 12.02273 33.6% - 0s 0 0 12.02005 0 83 9.00000 12.02005 33.6% - 0s 0 0 12.01089 0 83 9.00000 12.01089 33.5% - 0s 0 0 12.00460 0 83 9.00000 12.00460 33.4% - 0s 0 0 12.00385 0 83 9.00000 12.00385 33.4% - 0s 0 0 12.00304 0 83 9.00000 12.00304 33.4% - 0s 0 2 11.99934 0 83 9.00000 11.99934 33.3% - 0s Cutting planes: Clique: 53 Zero half: 1 Explored 39 nodes (2912 simplex iterations) in 0.71 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%