Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:43 2012 Optimize a model with 96 rows, 249 columns and 249 nonzeros Model has 190 quadratic constraints Presolve time: 1.11s Presolved: 96 rows, 249 columns, 249 nonzeros Variable types: 190 continuous, 59 integer (59 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 39.0000000 - - - 1s 0 0 0.00000 0 47 39.00000 0.00000 100% - 1s 0 0 0.27746 0 58 39.00000 0.27746 99.3% - 1s 0 2 0.30435 0 58 39.00000 0.30435 99.2% - 1s H 27 27 20.0000000 2.38820 88.1% 23.7 1s * 40 33 26 19.0000000 2.38820 87.4% 18.8 1s H 54 37 18.0000000 2.47826 86.2% 19.5 1s * 78 53 18 17.0000000 2.48055 85.4% 19.6 1s * 91 51 9 15.0000000 2.73043 81.8% 20.1 1s Cutting planes: Gomory: 1 Explored 622 nodes (12150 simplex iterations) in 1.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%