Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:53:06 2012 Optimize a model with 174 rows, 530 columns and 530 nonzeros Model has 346 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 2.02s Presolved: 174 rows, 505 columns, 505 nonzeros Variable types: 346 continuous, 159 integer (158 binary) Root relaxation: objective 0.000000e+00, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 76.0000000 - - - 2s 0 0 0.00000 0 36 76.00000 0.00000 100% - 2s 0 0 0.00000 0 38 76.00000 0.00000 100% - 2s 0 0 0.00000 0 36 76.00000 0.00000 100% - 2s 0 2 0.00000 0 36 76.00000 0.00000 100% - 2s * 16 16 13 11.0000000 0.16435 98.5% 80.4 2s * 81 26 22 8.0000000 1.88406 76.4% 21.6 2s * 137 27 8 7.0000000 3.17647 54.6% 17.8 2s * 185 20 5 6.0000000 4.15340 30.8% 15.6 2s Cutting planes: Explored 216 nodes (4752 simplex iterations) in 2.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%