Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:27:18 2012 Optimize a model with 241 rows, 696 columns and 696 nonzeros Model has 480 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 2.80s Presolved: 241 rows, 678 columns, 678 nonzeros Variable types: 480 continuous, 198 integer (197 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 0 130.0000000 - - - 2s 0 0 0.00000 0 92 130.00000 0.00000 100% - 2s 0 0 0.00000 0 130 130.00000 0.00000 100% - 2s 0 0 0.00000 0 122 130.00000 0.00000 100% - 2s 0 2 0.00000 0 122 130.00000 0.00000 100% - 3s * 25 24 18 13.0000000 2.47826 80.9% 42.2 3s 606 235 7.07477 13 378 13.00000 7.07477 45.6% 19.0 5s * 1736 34 31 12.0000000 11.52941 3.92% 28.9 7s Explored 1779 nodes (52465 simplex iterations) in 7.41 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%