Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:06:37 2012 Optimize a model with 214 rows, 629 columns and 629 nonzeros Model has 426 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 2.48s Presolved: 214 rows, 604 columns, 604 nonzeros Variable types: 426 continuous, 178 integer (177 binary) Root relaxation: objective 0.000000e+00, 75 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 118.0000000 - - - 2s 0 0 0.00000 0 2 118.00000 0.00000 100% - 2s 0 0 0.00000 0 2 118.00000 0.00000 100% - 2s 0 0 0.00000 0 88 118.00000 0.00000 100% - 2s 0 2 0.00000 0 87 118.00000 0.00000 100% - 2s * 32 32 26 17.0000000 1.61905 90.5% 35.6 2s * 109 81 21 16.0000000 2.71795 83.0% 18.6 2s H 162 85 14.0000000 2.81176 79.9% 20.2 2s * 729 275 37 13.0000000 6.48148 50.1% 27.8 4s * 837 241 36 12.0000000 6.48148 46.0% 28.3 4s Explored 1026 nodes (30311 simplex iterations) in 4.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%