Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:11:23 2012 Optimize a model with 244 rows, 694 columns and 694 nonzeros Model has 486 quadratic constraints Presolve removed 0 rows and 23 columns Presolve time: 2.83s Presolved: 244 rows, 671 columns, 671 nonzeros Variable types: 486 continuous, 185 integer (184 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 114.0000000 - - - 2s 0 0 0.00000 0 99 114.00000 0.00000 100% - 2s 0 0 0.00000 0 133 114.00000 0.00000 100% - 2s 0 0 0.00000 0 133 114.00000 0.00000 100% - 3s 0 2 0.00000 0 133 114.00000 0.00000 100% - 3s H 43 43 25.0000000 3.17391 87.3% 28.0 3s H 108 62 24.0000000 3.59091 85.0% 19.4 3s H 162 84 21.0000000 4.04167 80.8% 21.5 3s * 212 57 18 17.0000000 4.29452 74.7% 20.5 3s * 379 81 19 16.0000000 5.27119 67.1% 24.7 3s 680 167 cutoff 26 16.00000 7.50676 53.1% 36.6 5s 3395 28 cutoff 32 16.00000 15.00000 6.25% 30.5 10s Explored 3427 nodes (105851 simplex iterations) in 10.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%