Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:37:32 2012 Optimize a model with 153 rows, 473 columns and 473 nonzeros Model has 304 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 1.77s Presolved: 153 rows, 449 columns, 449 nonzeros Variable types: 304 continuous, 145 integer (144 binary) Root relaxation: objective 0.000000e+00, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 83.0000000 - - - 1s 0 0 0.00000 0 4 83.00000 0.00000 100% - 1s 0 0 0.00000 0 4 83.00000 0.00000 100% - 1s 0 0 0.00000 0 48 83.00000 0.00000 100% - 1s 0 2 0.00000 0 48 83.00000 0.00000 100% - 1s * 24 24 19 8.0000000 0.00000 100% 31.6 1s H 54 22 6.0000000 0.88571 85.2% 21.3 1s * 75 34 27 4.0000000 0.88571 77.9% 19.4 1s * 143 5 8 3.0000000 2.72256 9.25% 15.2 1s Cutting planes: Explored 149 nodes (3488 simplex iterations) in 1.91 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%