Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:10:24 2012 Optimize a model with 242 rows, 689 columns and 689 nonzeros Model has 482 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 2.81s Presolved: 242 rows, 665 columns, 665 nonzeros Variable types: 482 continuous, 183 integer (182 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 0 115.0000000 - - - 2s 0 0 0.00000 0 8 115.00000 0.00000 100% - 2s 0 0 0.00000 0 2 115.00000 0.00000 100% - 2s 0 0 0.00000 0 90 115.00000 0.00000 100% - 2s 0 2 0.00000 0 140 115.00000 0.00000 100% - 2s H 40 40 24.0000000 2.29630 90.4% 41.7 3s H 54 52 23.0000000 2.29630 90.0% 33.9 3s * 80 54 58 22.0000000 2.29630 89.6% 26.8 3s * 372 205 26 21.0000000 3.47396 83.5% 22.1 3s H 456 190 20.0000000 5.72727 71.4% 22.5 3s * 456 158 16 19.0000000 5.72727 69.9% 22.5 3s 701 219 13.40578 18 90 19.00000 8.14706 57.1% 35.9 5s * 1527 300 33 18.0000000 10.11538 43.8% 33.5 6s * 2360 256 33 17.0000000 12.92157 24.0% 30.9 8s Explored 2940 nodes (90832 simplex iterations) in 9.14 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%