Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:23:23 2012 Optimize a model with 258 rows, 742 columns and 742 nonzeros Model has 514 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 3.00s Presolved: 258 rows, 717 columns, 717 nonzeros Variable types: 514 continuous, 203 integer (202 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 0 131.0000000 - - - 3s 0 0 0.00000 0 11 131.00000 0.00000 100% - 3s 0 0 0.00000 0 4 131.00000 0.00000 100% - 3s 0 0 0.00000 0 12 131.00000 0.00000 100% - 3s 0 2 0.00000 0 12 131.00000 0.00000 100% - 3s * 21 21 16 21.0000000 2.02066 90.4% 80.2 3s H 218 125 20.0000000 4.34711 78.3% 24.2 3s 603 312 19.81971 20 453 20.00000 8.31472 58.4% 20.4 5s * 742 355 44 19.0000000 8.31472 56.2% 35.5 6s H 934 338 17.0000000 8.31472 51.1% 35.6 7s Explored 1719 nodes (62500 simplex iterations) in 9.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%