Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:56:56 2012 Optimize a model with 203 rows, 595 columns and 595 nonzeros Model has 404 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 2.35s Presolved: 203 rows, 570 columns, 570 nonzeros Variable types: 404 continuous, 166 integer (165 binary) Root relaxation: objective 0.000000e+00, 71 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 90.0000000 - - - 2s 0 0 0.00000 0 30 90.00000 0.00000 100% - 2s 0 0 0.00000 0 125 90.00000 0.00000 100% - 2s 0 0 0.00000 0 119 90.00000 0.00000 100% - 2s 0 2 0.00000 0 116 90.00000 0.00000 100% - 2s H 40 40 19.0000000 1.61676 91.5% 34.6 2s * 40 37 26 17.0000000 1.61676 90.5% 34.7 2s * 101 80 24 16.0000000 2.83343 82.3% 24.8 2s * 191 104 19 14.0000000 2.99827 78.6% 20.2 2s * 1356 113 38 13.0000000 8.64957 33.5% 24.1 4s 1504 72 cutoff 32 13.00000 10.00000 23.1% 23.9 5s Explored 1640 nodes (41048 simplex iterations) in 5.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%