Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:16:44 2012 Optimize a model with 218 rows, 645 columns and 645 nonzeros Model has 434 quadratic constraints Presolve removed 0 rows and 29 columns Presolve time: 2.53s Presolved: 218 rows, 616 columns, 616 nonzeros Variable types: 434 continuous, 182 integer (181 binary) Root relaxation: objective 0.000000e+00, 77 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 103.0000000 - - - 2s 0 0 0.00000 0 3 103.00000 0.00000 100% - 2s 0 0 0.00000 0 2 103.00000 0.00000 100% - 2s 0 0 0.00000 0 2 103.00000 0.00000 100% - 2s 0 2 0.00000 0 92 103.00000 0.00000 100% - 2s H 51 51 19.0000000 0.21053 98.9% 26.7 2s * 55 50 40 16.0000000 0.21053 98.7% 27.7 2s H 154 93 14.0000000 0.50000 96.4% 19.5 2s * 159 76 19 13.0000000 0.50000 96.2% 19.3 2s * 653 253 37 12.0000000 4.51136 62.4% 24.9 3s * 1065 195 30 11.0000000 7.05660 35.8% 31.4 4s 1161 162 cutoff 19 11.00000 7.68293 30.2% 31.8 5s Explored 1641 nodes (52033 simplex iterations) in 6.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%