Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:58:49 2012 Optimize a model with 164 rows, 409 columns and 409 nonzeros Model has 326 quadratic constraints Presolve time: 1.90s Presolved: 164 rows, 409 columns, 409 nonzeros Variable types: 326 continuous, 83 integer (83 binary) Root relaxation: objective 0.000000e+00, 41 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 82.0000000 - - - 1s 0 0 0.00000 0 66 82.00000 0.00000 100% - 1s 0 0 0.26784 0 79 82.00000 0.26784 100% - 1s 0 2 0.28736 0 79 82.00000 0.28736 100% - 1s H 42 42 33.0000000 2.88493 91.3% 27.9 2s * 42 42 27 31.0000000 2.88493 90.7% 28.5 2s * 49 43 32 30.0000000 2.88493 90.4% 26.3 2s * 75 60 17 29.0000000 2.88969 90.0% 32.0 2s H 102 77 28.0000000 2.94872 89.5% 36.7 2s H 165 110 27.0000000 3.02381 88.8% 37.4 2s H 279 136 26.0000000 5.66102 78.2% 34.0 2s 2016 555 20.00000 29 250 26.00000 14.94737 42.5% 26.8 5s * 5603 1082 36 25.0000000 19.03153 23.9% 20.1 8s * 6986 555 32 24.0000000 21.01453 12.4% 20.0 9s 7150 434 cutoff 31 24.00000 21.50000 10.4% 19.9 10s Explored 7624 nodes (148427 simplex iterations) in 10.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%