Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:12:15 2012 Optimize a model with 244 rows, 694 columns and 694 nonzeros Model has 486 quadratic constraints Presolve removed 0 rows and 20 columns Presolve time: 2.83s Presolved: 244 rows, 674 columns, 674 nonzeros Variable types: 486 continuous, 188 integer (187 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 127.0000000 - - - 2s 0 0 0.00000 0 133 127.00000 0.00000 100% - 2s 0 0 0.05947 0 171 127.00000 0.05947 100% - 2s 0 2 0.06397 0 171 127.00000 0.06397 100% - 2s H 54 54 20.0000000 1.73171 91.3% 26.6 2s * 74 68 48 19.0000000 1.73171 90.9% 23.2 2s H 103 60 18.0000000 1.80851 90.0% 23.8 3s * 197 96 16 17.0000000 5.85714 65.5% 29.3 3s * 214 86 15 16.0000000 5.87097 63.3% 29.4 3s H 395 82 15.0000000 7.36096 50.9% 29.7 3s * 395 67 9 14.0000000 7.36096 47.4% 29.7 3s Cutting planes: Gomory: 4 Explored 619 nodes (20871 simplex iterations) in 3.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%