Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:02:21 2012 Optimize a model with 291 rows, 813 columns and 813 nonzeros Model has 580 quadratic constraints Presolve removed 0 rows and 16 columns Presolve time: 3.38s Presolved: 291 rows, 797 columns, 797 nonzeros Variable types: 580 continuous, 217 integer (216 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 142.0000000 - - - 3s 0 0 0.00000 0 133 142.00000 0.00000 100% - 3s 0 0 0.04628 0 209 142.00000 0.04628 100% - 3s 0 2 0.05202 0 209 142.00000 0.05202 100% - 3s H 46 46 27.0000000 2.28916 91.5% 31.8 3s * 67 66 38 24.0000000 2.28916 90.5% 26.6 3s H 105 60 19.0000000 2.37931 87.5% 26.7 3s 619 161 13.01506 19 676 19.00000 11.15198 41.3% 42.2 5s 2755 297 16.79902 30 499 19.00000 14.96519 21.2% 31.9 10s Explored 4669 nodes (132511 simplex iterations) in 13.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.899999999865e+01, best bound 1.899999999865e+01, gap 0.0%