Gurobi 5.0.1 (linux64) logging started Tue Jan 22 19:36:16 2013 Optimize a model with 140 rows, 204 columns and 320 nonzeros Model has 40 quadratic constraints Presolve removed 20 rows and 20 columns Presolve time: 0.24s Presolved: 240 rows, 304 columns, 520 nonzeros Variable types: 284 continuous, 20 integer (20 binary) Root relaxation: objective 0.000000e+00, 80 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 2284.2676405 - - - 0s 0 0 0.00000 0 16 2284.26764 0.00000 100% - 0s 0 0 0.00000 0 11 2284.26764 0.00000 100% - 0s 0 2 0.00000 0 11 2284.26764 0.00000 100% - 0s * 37 37 20 1736.8992282 0.00000 100% 17.2 0s * 38 36 20 1626.6435681 0.00000 100% 16.7 0s H 76 60 1572.1557280 0.00000 100% 20.4 0s * 76 59 20 1572.1556659 0.00000 100% 20.5 0s 4330 857 1356.16702 24 11 1572.15567 899.03656 42.8% 41.8 5s 8965 849 1161.10438 24 11 1572.15567 1143.79885 27.2% 43.6 10s Cutting planes: Explored 12937 nodes (552528 simplex iterations) in 14.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.572155696766e+03, best bound 1.572155696766e+03, gap 0.0%