Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:54:21 2012 Optimize a model with 282 rows, 794 columns and 794 nonzeros Model has 562 quadratic constraints Presolve removed 0 rows and 16 columns Presolve time: 3.27s Presolved: 282 rows, 778 columns, 778 nonzeros Variable types: 562 continuous, 216 integer (215 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 0 136.0000000 - - - 3s 0 0 0.00000 0 10 136.00000 0.00000 100% - 3s 0 0 0.00000 0 131 136.00000 0.00000 100% - 3s 0 0 0.00000 0 165 136.00000 0.00000 100% - 3s 0 2 0.00000 0 163 136.00000 0.00000 100% - 3s H 51 51 28.0000000 2.92556 89.6% 41.1 3s H 54 54 27.0000000 2.92556 89.2% 43.0 3s * 177 102 25 24.0000000 3.25926 86.4% 27.6 3s H 584 303 23.0000000 7.15217 68.9% 26.5 4s 706 351 7.97458 11 464 23.00000 7.97458 65.3% 29.9 5s 2227 668 cutoff 37 23.00000 11.31183 50.8% 38.3 10s 4485 1396 14.75978 28 444 23.00000 14.00000 39.1% 33.9 15s 6859 1979 21.00820 34 325 23.00000 15.34177 33.3% 31.9 20s 9135 2388 18.48780 28 439 23.00000 16.00000 30.4% 31.7 25s 11647 2711 19.96178 32 388 23.00000 16.92308 26.4% 30.5 30s 14156 2990 22.21875 36 338 23.00000 17.39130 24.4% 29.8 35s H16266 1832 21.0000000 17.81096 15.2% 29.1 38s 16446 1763 18.73006 30 427 21.00000 17.94595 14.5% 29.1 40s 16988 1539 cutoff 30 21.00000 18.26531 13.0% 29.3 45s 17308 1366 19.70370 32 355 21.00000 18.52941 11.8% 29.3 50s 17646 1147 cutoff 34 21.00000 18.86364 10.2% 29.2 55s 17949 932 20.00000 33 441 21.00000 19.00000 9.52% 29.7 60s Explored 18989 nodes (555645 simplex iterations) in 61.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%