Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:11:18 2012 Optimize a model with 216 rows, 638 columns and 638 nonzeros Model has 430 quadratic constraints Presolve removed 0 rows and 31 columns Presolve time: 2.51s Presolved: 216 rows, 607 columns, 607 nonzeros Variable types: 430 continuous, 177 integer (176 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 0 107.0000000 - - - 2s 0 0 0.00000 0 2 107.00000 0.00000 100% - 2s 0 0 0.00000 0 9 107.00000 0.00000 100% - 2s 0 0 0.00000 0 50 107.00000 0.00000 100% - 2s 0 2 0.00000 0 2 107.00000 0.00000 100% - 2s * 34 32 27 19.0000000 0.50806 97.3% 50.0 2s H 173 113 18.0000000 1.30189 92.8% 23.6 2s H 194 122 17.0000000 1.30189 92.3% 22.2 2s * 247 103 17 16.0000000 1.32000 91.8% 22.8 2s H 270 108 15.0000000 1.40854 90.6% 22.4 2s * 635 243 25 13.0000000 4.44681 65.8% 26.2 3s 1069 173 11.01299 32 367 13.00000 9.93333 23.6% 31.0 5s Explored 1127 nodes (36485 simplex iterations) in 5.10 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%