Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:05:47 2012 Optimize a model with 196 rows, 592 columns and 592 nonzeros Model has 390 quadratic constraints Presolve removed 0 rows and 30 columns Presolve time: 2.28s Presolved: 196 rows, 562 columns, 562 nonzeros Variable types: 390 continuous, 172 integer (171 binary) Root relaxation: objective 0.000000e+00, 69 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 83.0000000 - - - 2s 0 0 0.00000 0 3 83.00000 0.00000 100% - 2s 0 0 0.00000 0 3 83.00000 0.00000 100% - 2s 0 0 0.00000 0 2 83.00000 0.00000 100% - 2s 0 2 0.00000 0 2 83.00000 0.00000 100% - 2s * 27 27 19 15.0000000 0.14851 99.0% 68.7 2s H 49 31 10.0000000 1.00000 90.0% 45.9 2s H 425 106 9.0000000 4.93333 45.2% 23.8 2s H 598 87 9.0000000 6.58824 26.8% 22.1 2s 1725 67 cutoff 34 9.00000 8.40000 6.67% 26.6 5s Explored 1879 nodes (48428 simplex iterations) in 5.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.999999998849e+00, best bound 8.999999998849e+00, gap 0.0%