Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:00 2012 Optimize a model with 87 rows, 229 columns and 229 nonzeros Model has 172 quadratic constraints Presolve removed 0 rows and 2 columns Presolve time: 1.00s Presolved: 87 rows, 227 columns, 227 nonzeros Variable types: 172 continuous, 55 integer (54 binary) Root relaxation: objective 0.000000e+00, 26 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 45.0000000 - - - 1s 0 0 0.00000 0 29 45.00000 0.00000 100% - 1s 0 0 0.00000 0 48 45.00000 0.00000 100% - 1s 0 0 0.00000 0 43 45.00000 0.00000 100% - 1s 0 2 0.00000 0 43 45.00000 0.00000 100% - 1s * 13 13 9 10.0000000 2.66667 73.3% 40.0 1s * 28 18 9 9.0000000 4.50000 50.0% 29.8 1s Cutting planes: Gomory: 1 Explored 94 nodes (2534 simplex iterations) in 1.07 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%