Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:57:37 2012 Optimize a model with 204 rows, 598 columns and 598 nonzeros Model has 406 quadratic constraints Presolve removed 0 rows and 26 columns Presolve time: 2.37s Presolved: 204 rows, 572 columns, 572 nonzeros Variable types: 406 continuous, 166 integer (165 binary) Root relaxation: objective 0.000000e+00, 73 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 99.0000000 - - - 2s 0 0 0.00000 0 69 99.00000 0.00000 100% - 2s 0 0 0.00000 0 69 99.00000 0.00000 100% - 2s 0 0 0.00000 0 63 99.00000 0.00000 100% - 2s 0 2 0.00000 0 59 99.00000 0.00000 100% - 2s H 52 52 21.0000000 1.61311 92.3% 29.5 2s * 57 57 38 20.0000000 1.61311 91.9% 28.3 2s H 136 104 18.0000000 1.77639 90.1% 20.2 2s * 150 105 45 17.0000000 1.77639 89.6% 19.5 2s H 209 96 15.0000000 3.07833 79.5% 18.2 2s * 423 143 17 14.0000000 5.50000 60.7% 17.6 2s * 965 205 44 13.0000000 6.46035 50.3% 26.8 4s H 993 166 12.0000000 6.46035 46.2% 26.5 4s 1395 183 10.54472 22 290 12.00000 7.41176 38.2% 28.4 5s Explored 2730 nodes (82183 simplex iterations) in 7.65 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%