Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:50:43 2012 Optimize a model with 173 rows, 523 columns and 523 nonzeros Model has 344 quadratic constraints Presolve removed 0 rows and 19 columns Presolve time: 2.01s Presolved: 173 rows, 504 columns, 504 nonzeros Variable types: 344 continuous, 160 integer (159 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 86.0000000 - - - 2s 0 0 0.00000 0 48 86.00000 0.00000 100% - 2s 0 0 0.00000 0 50 86.00000 0.00000 100% - 2s 0 0 0.00000 0 49 86.00000 0.00000 100% - 2s 0 2 0.00000 0 116 86.00000 0.00000 100% - 2s H 43 41 10.0000000 1.24813 87.5% 29.4 2s * 48 32 33 9.0000000 1.24813 86.1% 29.8 2s * 63 35 14 8.0000000 1.28696 83.9% 27.7 2s * 65 32 15 7.0000000 1.28696 81.6% 28.4 2s * 82 30 5 6.0000000 1.36667 77.2% 31.6 2s Cutting planes: Explored 225 nodes (6165 simplex iterations) in 2.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%