Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:05:45 2012 Optimize a model with 160 rows, 344 columns and 344 nonzeros Model has 318 quadratic constraints Presolve time: 1.85s Presolved: 160 rows, 344 columns, 344 nonzeros Variable types: 318 continuous, 26 integer (26 binary) Root relaxation: objective 0.000000e+00, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 75.0000000 - - - 1s 0 0 0.00000 0 24 75.00000 0.00000 100% - 1s 0 0 0.68750 0 26 75.00000 0.68750 99.1% - 1s 0 0 0.68750 0 26 75.00000 0.68750 99.1% - 1s 0 2 0.68750 0 26 75.00000 0.68750 99.1% - 1s * 32 32 17 69.0000000 7.35000 89.3% 46.1 1s * 135 94 16 64.0000000 13.05769 79.6% 41.7 2s 2571 776 63.85714 44 176 64.00000 37.33333 41.7% 29.4 5s * 2654 727 43 61.0000000 37.50000 38.5% 29.1 5s 6755 728 59.73333 41 188 61.00000 50.60000 17.0% 24.1 10s Explored 8685 nodes (195703 simplex iterations) in 11.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.100000000000e+01, best bound 6.100000000000e+01, gap 0.0%