Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:42:56 2012 Optimize a model with 289 rows, 819 columns and 819 nonzeros Model has 576 quadratic constraints Presolve removed 0 rows and 20 columns Presolve time: 3.36s Presolved: 289 rows, 799 columns, 799 nonzeros Variable types: 576 continuous, 223 integer (222 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 0 144.0000000 - - - 3s 0 0 0.00000 0 127 144.00000 0.00000 100% - 3s 0 0 0.00000 0 202 144.00000 0.00000 100% - 3s 0 0 0.00000 0 198 144.00000 0.00000 100% - 3s 0 2 0.00000 0 198 144.00000 0.00000 100% - 3s H 52 52 27.0000000 2.56152 90.5% 34.8 3s * 66 59 35 26.0000000 2.56152 90.1% 32.0 3s H 181 148 25.0000000 3.12111 87.5% 31.0 3s H 250 176 24.0000000 5.39579 77.5% 33.3 3s H 368 190 23.0000000 6.46618 71.9% 31.5 4s * 404 183 38 22.0000000 6.46618 70.6% 30.1 4s 635 275 21.06040 30 547 22.00000 9.08249 58.7% 40.0 5s * 1290 250 93 21.0000000 9.55518 54.5% 43.6 7s * 1350 213 44 20.0000000 9.74001 51.3% 43.7 7s * 2005 150 46 19.0000000 13.28409 30.1% 44.0 9s 2286 80 17.86760 36 373 19.00000 15.47173 18.6% 43.3 10s Explored 2412 nodes (107144 simplex iterations) in 10.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%