Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:28 2012 Optimize a model with 44 rows, 115 columns and 115 nonzeros Model has 86 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.50s Presolved: 44 rows, 112 columns, 112 nonzeros Variable types: 86 continuous, 26 integer (25 binary) Root relaxation: objective 0.000000e+00, 14 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 19.0000000 - - - 0s 0 0 0.00000 0 8 19.00000 0.00000 100% - 0s 0 0 0.00000 0 20 19.00000 0.00000 100% - 0s 0 0 0.00000 0 19 19.00000 0.00000 100% - 0s 0 2 0.00000 0 19 19.00000 0.00000 100% - 0s * 12 12 8 10.0000000 3.28571 67.1% 12.8 0s * 30 12 10 9.0000000 3.47368 61.4% 9.0 0s * 50 13 7 8.0000000 4.40000 45.0% 9.8 0s Cutting planes: Explored 71 nodes (929 simplex iterations) in 0.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%