Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:41:30 2012 Optimize a model with 286 rows, 808 columns and 808 nonzeros Model has 570 quadratic constraints Presolve removed 0 rows and 16 columns Presolve time: 3.33s Presolved: 286 rows, 792 columns, 792 nonzeros Variable types: 570 continuous, 222 integer (221 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 0 139.0000000 - - - 3s 0 0 0.00000 0 55 139.00000 0.00000 100% - 3s 0 0 0.00000 0 57 139.00000 0.00000 100% - 3s 0 0 0.00000 0 55 139.00000 0.00000 100% - 3s 0 2 0.00000 0 55 139.00000 0.00000 100% - 3s H 38 38 28.0000000 2.22309 92.1% 50.2 3s H 72 44 23.0000000 2.50589 89.1% 45.2 3s H 84 52 21.0000000 2.50589 88.1% 41.0 3s 605 199 12.73933 7 491 21.00000 8.30915 60.4% 31.5 5s * 1005 260 96 18.0000000 8.30915 53.8% 41.6 7s 1887 256 14.43548 39 481 18.00000 11.70526 35.0% 38.2 10s * 2464 204 39 17.0000000 12.94809 23.8% 36.4 11s Explored 2911 nodes (109535 simplex iterations) in 13.27 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%