Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:50:48 2012 Optimize a model with 172 rows, 521 columns and 521 nonzeros Model has 342 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 1.99s Presolved: 172 rows, 497 columns, 497 nonzeros Variable types: 342 continuous, 155 integer (154 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 99.0000000 - - - 2s 0 0 0.00000 0 43 99.00000 0.00000 100% - 2s 0 0 0.00000 0 50 99.00000 0.00000 100% - 2s 0 0 0.00000 0 100 99.00000 0.00000 100% - 2s 0 2 0.00000 0 100 99.00000 0.00000 100% - 2s * 24 22 16 7.0000000 1.85714 73.5% 60.0 2s H 54 33 6.0000000 1.91182 68.1% 32.8 2s Cutting planes: Explored 419 nodes (8144 simplex iterations) in 2.29 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%