Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:09:24 2012 Optimize a model with 212 rows, 628 columns and 628 nonzeros Model has 422 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 2.46s Presolved: 212 rows, 603 columns, 603 nonzeros Variable types: 422 continuous, 181 integer (180 binary) Root relaxation: objective 0.000000e+00, 75 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 113.0000000 - - - 2s 0 0 0.00000 0 2 113.00000 0.00000 100% - 2s 0 0 0.00000 0 3 113.00000 0.00000 100% - 2s 0 0 0.00000 0 59 113.00000 0.00000 100% - 2s 0 2 0.00000 0 55 113.00000 0.00000 100% - 2s * 33 33 24 18.0000000 1.27660 92.9% 44.0 2s H 93 40 14.0000000 1.73626 87.6% 25.0 2s * 103 41 25 13.0000000 1.73626 86.6% 27.4 2s * 157 52 19 12.0000000 2.07500 82.7% 26.0 2s * 284 69 26 11.0000000 5.70248 48.2% 23.0 2s H 293 49 10.0000000 5.77941 42.2% 22.7 2s * 428 34 15 9.0000000 7.61355 15.4% 20.4 2s Cutting planes: Explored 496 nodes (10760 simplex iterations) in 2.93 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%