Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:04:39 2012 Optimize a model with 228 rows, 655 columns and 655 nonzeros Model has 454 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 2.65s Presolved: 228 rows, 631 columns, 631 nonzeros Variable types: 454 continuous, 177 integer (176 binary) Root relaxation: objective 0.000000e+00, 81 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 105.0000000 - - - 2s 0 0 0.00000 0 84 105.00000 0.00000 100% - 2s 0 0 0.00000 0 101 105.00000 0.00000 100% - 2s 0 0 0.00000 0 100 105.00000 0.00000 100% - 2s 0 2 0.00000 0 100 105.00000 0.00000 100% - 2s H 27 23 15.0000000 1.72185 88.5% 52.7 2s * 102 53 21 13.0000000 4.00000 69.2% 29.8 2s * 334 54 17 12.0000000 7.76471 35.3% 22.6 3s Cutting planes: Gomory: 2 Explored 489 nodes (12041 simplex iterations) in 3.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%