Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:51:44 2012 Optimize a model with 172 rows, 523 columns and 523 nonzeros Model has 342 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 2.00s Presolved: 172 rows, 499 columns, 499 nonzeros Variable types: 342 continuous, 157 integer (156 binary) Root relaxation: objective 0.000000e+00, 61 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 91.0000000 - - - 2s 0 0 0.00000 0 35 91.00000 0.00000 100% - 2s 0 0 0.00000 0 88 91.00000 0.00000 100% - 2s 0 0 0.00000 0 76 91.00000 0.00000 100% - 2s 0 2 0.00000 0 35 91.00000 0.00000 100% - 2s * 15 13 10 6.0000000 1.05706 82.4% 66.3 2s H 226 10 6.0000000 5.50877 8.19% 17.8 2s Cutting planes: Explored 260 nodes (5913 simplex iterations) in 2.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.999999998862e+00, best bound 5.999999998862e+00, gap 0.0%