Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:03:31 2012 Optimize a model with 253 rows, 729 columns and 729 nonzeros Model has 504 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 2.96s Presolved: 253 rows, 711 columns, 711 nonzeros Variable types: 504 continuous, 207 integer (206 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 0 147.0000000 - - - 2s 0 0 0.00000 0 8 147.00000 0.00000 100% - 2s 0 0 0.00000 0 3 147.00000 0.00000 100% - 2s 0 0 0.00000 0 3 147.00000 0.00000 100% - 2s 0 2 0.00000 0 3 147.00000 0.00000 100% - 3s * 27 25 20 20.0000000 0.39231 98.0% 66.8 3s H 80 57 18.0000000 1.07018 94.1% 40.8 3s 629 241 16.37398 24 289 18.00000 6.84211 62.0% 31.4 5s * 819 269 39 17.0000000 6.84211 59.8% 39.4 5s H 1412 152 16.0000000 10.01754 37.4% 35.3 6s Explored 2087 nodes (72002 simplex iterations) in 8.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%