Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:52:49 2012 Optimize a model with 253 rows, 727 columns and 727 nonzeros Model has 504 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 2.93s Presolved: 253 rows, 709 columns, 709 nonzeros Variable types: 504 continuous, 205 integer (204 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 0 101.0000000 - - - 2s 0 0 0.00000 0 2 101.00000 0.00000 100% - 2s 0 0 0.00000 0 2 101.00000 0.00000 100% - 2s 0 0 0.00000 0 2 101.00000 0.00000 100% - 2s 0 2 0.00000 0 143 101.00000 0.00000 100% - 3s H 50 50 21.0000000 2.07463 90.1% 42.4 3s * 50 49 30 20.0000000 2.07463 89.6% 42.6 3s H 518 194 18.0000000 8.05556 55.2% 21.4 3s 682 259 14.46154 23 368 18.00000 8.44444 53.1% 30.4 5s * 2392 301 34 17.0000000 10.44660 38.5% 37.4 9s 2724 325 13.20253 33 383 17.00000 11.17919 34.2% 35.8 10s Explored 4203 nodes (142901 simplex iterations) in 12.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%