Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:44:54 2012 Optimize a model with 247 rows, 713 columns and 713 nonzeros Model has 492 quadratic constraints Presolve removed 0 rows and 23 columns Presolve time: 2.87s Presolved: 247 rows, 690 columns, 690 nonzeros Variable types: 492 continuous, 198 integer (197 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 0 134.0000000 - - - 2s 0 0 0.00000 0 80 134.00000 0.00000 100% - 2s 0 0 0.00000 0 96 134.00000 0.00000 100% - 2s 0 0 0.00000 0 95 134.00000 0.00000 100% - 2s 0 2 0.00000 0 94 134.00000 0.00000 100% - 3s H 54 54 24.0000000 2.15054 91.0% 38.4 3s * 55 55 42 22.0000000 2.15054 90.2% 37.9 3s H 271 162 19.0000000 3.05357 83.9% 20.7 3s H 451 240 18.0000000 3.81710 78.8% 19.3 3s 705 344 12.61808 22 437 18.00000 4.86984 72.9% 28.6 5s * 782 353 44 17.0000000 4.86984 71.4% 32.9 5s H 841 330 16.0000000 4.86984 69.6% 33.1 5s Explored 1922 nodes (60588 simplex iterations) in 7.38 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%