Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:55:48 2012 Optimize a model with 169 rows, 419 columns and 419 nonzeros Model has 336 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 1.96s Presolved: 169 rows, 418 columns, 418 nonzeros Variable types: 336 continuous, 82 integer (81 binary) Root relaxation: objective 0.000000e+00, 40 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 102.0000000 - - - 1s 0 0 0.00000 0 4 102.00000 0.00000 100% - 1s 0 0 0.00000 0 47 102.00000 0.00000 100% - 1s 0 0 0.00000 0 44 102.00000 0.00000 100% - 1s 0 2 0.00000 0 44 102.00000 0.00000 100% - 1s H 42 42 46.0000000 3.00000 93.5% 32.5 2s * 56 54 40 44.0000000 3.00000 93.2% 29.4 2s H 81 55 35.0000000 3.06383 91.2% 30.0 2s * 118 82 20 33.0000000 6.47222 80.4% 30.3 2s H 355 189 32.0000000 10.32308 67.7% 26.6 2s * 441 223 16 31.0000000 10.83099 65.1% 26.7 2s * 820 346 39 30.0000000 12.40635 58.6% 34.8 4s 1113 404 22.78581 28 265 30.00000 13.26364 55.8% 32.7 5s H 1898 478 29.0000000 17.57407 39.4% 27.4 5s 3819 711 27.81667 35 243 29.00000 21.00000 27.6% 22.8 10s Explored 7069 nodes (146493 simplex iterations) in 14.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%