Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:17:13 2012 Optimize a model with 249 rows, 707 columns and 707 nonzeros Model has 496 quadratic constraints Presolve removed 0 rows and 16 columns Presolve time: 2.89s Presolved: 249 rows, 691 columns, 691 nonzeros Variable types: 496 continuous, 195 integer (194 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 0 120.0000000 - - - 2s 0 0 0.00000 0 6 120.00000 0.00000 100% - 2s 0 0 0.00000 0 25 120.00000 0.00000 100% - 2s 0 0 0.00000 0 143 120.00000 0.00000 100% - 2s 0 2 0.00000 0 134 120.00000 0.00000 100% - 3s H 53 53 25.0000000 2.24086 91.0% 33.6 3s * 54 54 34 23.0000000 2.24086 90.3% 33.8 3s * 85 77 19 22.0000000 2.89941 86.8% 33.2 3s H 126 100 21.0000000 3.21429 84.7% 27.8 3s * 185 116 37 20.0000000 3.48148 82.6% 24.5 3s 601 319 16.67647 16 143 20.00000 7.67442 61.6% 21.3 5s * 647 325 30 18.0000000 7.67442 57.4% 28.3 6s 2068 137 cutoff 27 18.00000 13.37736 25.7% 35.2 10s * 2286 66 32 17.0000000 14.57143 14.3% 35.1 10s Explored 2379 nodes (84656 simplex iterations) in 10.60 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%