Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:00:35 2012 Optimize a model with 215 rows, 624 columns and 624 nonzeros Model has 428 quadratic constraints Presolve removed 0 rows and 14 columns Presolve time: 2.49s Presolved: 215 rows, 610 columns, 610 nonzeros Variable types: 428 continuous, 182 integer (181 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 0 103.0000000 - - - 2s 0 0 0.00000 0 4 103.00000 0.00000 100% - 2s 0 0 0.00000 0 91 103.00000 0.00000 100% - 2s 0 0 0.00000 0 74 103.00000 0.00000 100% - 2s 0 2 0.00000 0 74 103.00000 0.00000 100% - 2s * 38 34 30 17.0000000 1.36410 92.0% 31.7 2s * 155 76 51 16.0000000 2.00000 87.5% 18.4 2s * 202 72 34 15.0000000 2.77083 81.5% 18.4 2s * 243 52 18 14.0000000 3.09091 77.9% 18.1 2s * 478 93 13 13.0000000 7.00000 46.2% 17.7 2s 707 112 9.77099 11 556 13.00000 9.77099 24.8% 21.4 5s Explored 1783 nodes (50576 simplex iterations) in 6.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%