Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:22 2012 Optimize a model with 52 rows, 144 columns and 144 nonzeros Model has 102 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 0.60s Presolved: 52 rows, 143 columns, 143 nonzeros Variable types: 102 continuous, 41 integer (40 binary) Root relaxation: objective 0.000000e+00, 21 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 29.0000000 - - - 0s 0 0 0.00000 0 13 29.00000 0.00000 100% - 0s 0 0 0.00000 0 17 29.00000 0.00000 100% - 0s 0 0 0.00000 0 14 29.00000 0.00000 100% - 0s 0 2 0.00000 0 14 29.00000 0.00000 100% - 0s * 22 22 15 9.0000000 2.14286 76.2% 16.1 0s * 35 23 9 8.0000000 2.50000 68.8% 14.1 0s H 46 23 7.0000000 2.74647 60.8% 12.8 0s * 47 18 9 6.0000000 2.74647 54.2% 12.6 0s * 52 5 5 5.0000000 4.00000 20.0% 12.6 0s Cutting planes: Gomory: 1 Explored 63 nodes (939 simplex iterations) in 0.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%