Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:25 2012 Optimize a model with 82 rows, 220 columns and 220 nonzeros Model has 162 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 0.95s Presolved: 82 rows, 219 columns, 219 nonzeros Variable types: 162 continuous, 57 integer (56 binary) Root relaxation: objective 0.000000e+00, 29 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 32.0000000 - - - 0s 0 0 0.00000 0 5 32.00000 0.00000 100% - 0s 0 0 0.00000 0 47 32.00000 0.00000 100% - 0s 0 0 0.00000 0 43 32.00000 0.00000 100% - 0s 0 2 0.00000 0 43 32.00000 0.00000 100% - 0s * 25 25 15 15.0000000 2.25000 85.0% 30.3 0s * 47 30 11 12.0000000 2.88462 76.0% 23.2 0s H 54 26 10.0000000 2.90196 71.0% 24.4 1s * 59 25 7 9.0000000 2.90196 67.8% 23.5 1s Cutting planes: Explored 174 nodes (4462 simplex iterations) in 1.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%