Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:52:36 2012 Optimize a model with 170 rows, 521 columns and 521 nonzeros Model has 338 quadratic constraints Presolve removed 0 rows and 37 columns Presolve time: 1.98s Presolved: 170 rows, 484 columns, 484 nonzeros Variable types: 338 continuous, 146 integer (145 binary) Root relaxation: objective 0.000000e+00, 61 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 69.0000000 - - - 1s 0 0 0.00000 0 2 69.00000 0.00000 100% - 1s 0 0 0.00000 0 73 69.00000 0.00000 100% - 1s 0 0 0.00000 0 52 69.00000 0.00000 100% - 2s 0 2 0.00000 0 52 69.00000 0.00000 100% - 2s H 36 36 11.0000000 1.76522 84.0% 36.4 2s * 40 34 27 9.0000000 1.76522 80.4% 34.4 2s * 1288 30 21 8.0000000 7.29213 8.85% 22.6 4s Explored 1338 nodes (30128 simplex iterations) in 4.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%