Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:04 2012 Optimize a model with 72 rows, 195 columns and 195 nonzeros Model has 142 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 0.83s Presolved: 72 rows, 194 columns, 194 nonzeros Variable types: 142 continuous, 52 integer (51 binary) Root relaxation: objective 0.000000e+00, 25 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 38.0000000 - - - 0s 0 0 0.00000 0 2 38.00000 0.00000 100% - 0s 0 0 0.00000 0 46 38.00000 0.00000 100% - 0s 0 0 0.00000 0 29 38.00000 0.00000 100% - 0s 0 2 0.00000 0 29 38.00000 0.00000 100% - 0s * 9 9 6 8.0000000 2.50000 68.8% 36.1 0s * 15 11 10 7.0000000 2.50000 64.3% 25.1 0s Cutting planes: Explored 85 nodes (1587 simplex iterations) in 0.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%