Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:25:57 2012 Optimize a model with 146 rows, 363 columns and 363 nonzeros Model has 290 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 1.69s Presolved: 146 rows, 362 columns, 362 nonzeros Variable types: 290 continuous, 72 integer (71 binary) Root relaxation: objective 0.000000e+00, 35 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 79.0000000 - - - 1s 0 0 0.00000 0 39 79.00000 0.00000 100% - 1s 0 0 0.00000 0 66 79.00000 0.00000 100% - 1s 0 0 0.00000 0 66 79.00000 0.00000 100% - 1s 0 2 0.00000 0 66 79.00000 0.00000 100% - 1s H 54 53 37.0000000 5.57143 84.9% 27.6 1s * 57 53 33 35.0000000 5.57143 84.1% 27.3 1s * 92 70 24 29.0000000 5.63158 80.6% 29.6 1s * 218 147 24 28.0000000 6.90909 75.3% 31.8 1s * 1097 361 43 27.0000000 13.22581 51.0% 31.9 3s H 1125 322 26.0000000 13.22581 49.1% 31.7 3s * 1203 275 44 25.0000000 13.22581 47.1% 31.2 3s 2585 239 21.21053 36 199 25.00000 18.33898 26.6% 25.2 5s Explored 3623 nodes (83187 simplex iterations) in 6.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%