Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:05:14 2012 Optimize a model with 229 rows, 657 columns and 657 nonzeros Model has 456 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 2.66s Presolved: 229 rows, 639 columns, 639 nonzeros Variable types: 456 continuous, 183 integer (182 binary) Root relaxation: objective 0.000000e+00, 81 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 123.0000000 - - - 2s 0 0 0.00000 0 8 123.00000 0.00000 100% - 2s 0 0 0.00000 0 9 123.00000 0.00000 100% - 2s 0 0 0.00000 0 86 123.00000 0.00000 100% - 2s 0 2 0.00000 0 86 123.00000 0.00000 100% - 2s H 37 37 19.0000000 2.53571 86.7% 34.9 2s * 43 37 33 18.0000000 2.53571 85.9% 31.1 2s * 160 82 39 14.0000000 4.56296 67.4% 20.7 2s * 927 214 50 13.0000000 8.71468 33.0% 29.5 4s 970 203 11.00629 37 374 13.00000 8.71468 33.0% 29.1 5s Explored 1277 nodes (38894 simplex iterations) in 5.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%