Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:57:00 2012 Optimize a model with 173 rows, 398 columns and 398 nonzeros Model has 344 quadratic constraints Presolve time: 2.00s Presolved: 173 rows, 398 columns, 398 nonzeros Variable types: 344 continuous, 54 integer (54 binary) Root relaxation: objective 0.000000e+00, 27 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 75.0000000 - - - 2s 0 0 0.00000 0 13 75.00000 0.00000 100% - 2s 0 0 0.00000 0 16 75.00000 0.00000 100% - 2s 0 0 0.00000 0 53 75.00000 0.00000 100% - 2s 0 2 0.00000 0 53 75.00000 0.00000 100% - 2s H 47 47 55.0000000 6.56863 88.1% 42.7 2s * 83 72 21 53.0000000 6.75000 87.3% 40.6 2s H 123 98 50.0000000 8.00000 84.0% 39.0 2s H 267 190 47.0000000 8.83333 81.2% 42.5 2s H 461 229 45.0000000 14.77778 67.2% 40.5 2s 1616 597 33.44681 37 244 45.00000 20.51613 54.4% 36.7 5s * 3319 1224 44 44.0000000 24.56250 44.2% 27.9 6s * 5022 1611 39 43.0000000 27.00000 37.2% 24.7 8s H 5357 1581 42.0000000 27.37931 34.8% 24.4 8s 5609 1595 36.47727 33 238 42.00000 27.71429 34.0% 24.2 10s 7917 1772 38.33333 37 232 42.00000 30.37500 27.7% 22.7 15s 11500 1574 39.47222 35 213 42.00000 33.62500 19.9% 21.5 20s 15430 316 cutoff 44 42.00000 38.71429 7.82% 20.8 25s Explored 15838 nodes (324782 simplex iterations) in 25.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%