Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:29:48 2012 Optimize a model with 271 rows, 757 columns and 757 nonzeros Model has 540 quadratic constraints Presolve removed 0 rows and 16 columns Presolve time: 3.15s Presolved: 271 rows, 741 columns, 741 nonzeros Variable types: 540 continuous, 201 integer (200 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 0 130.0000000 - - - 3s 0 0 0.00000 0 136 130.00000 0.00000 100% - 3s 0 0 0.12773 0 192 130.00000 0.12773 100% - 3s 0 2 0.13492 0 192 130.00000 0.13492 100% - 3s H 47 47 29.0000000 2.25641 92.2% 30.3 3s * 60 60 36 26.0000000 2.25641 91.3% 26.8 3s * 178 107 25 25.0000000 3.97143 84.1% 22.8 3s * 212 114 18 24.0000000 4.11888 82.8% 27.9 3s * 417 198 26 23.0000000 7.67692 66.6% 28.6 3s 606 249 8.93598 13 454 23.00000 8.93598 61.1% 32.7 5s 2221 814 21.44099 39 409 23.00000 10.57895 54.0% 33.6 10s 4253 1615 22.50000 40 405 23.00000 12.89655 43.9% 31.2 15s 6426 2321 cutoff 36 23.00000 14.21739 38.2% 29.1 20s 8629 2923 20.41558 37 404 23.00000 15.05000 34.6% 27.9 25s 10961 3451 21.05089 39 364 23.00000 15.89271 30.9% 26.6 30s 13262 3913 infeasible 40 23.00000 16.40482 28.7% 26.0 35s 15635 4284 21.54088 41 414 23.00000 16.87500 26.6% 25.3 40s 17923 4593 20.19162 42 416 23.00000 17.24088 25.0% 25.3 45s *19249 3650 54 22.0000000 17.48359 20.5% 24.8 47s 19452 3618 20.23077 38 392 22.00000 17.52381 20.3% 25.1 50s 19843 3559 20.47436 42 396 22.00000 17.68889 19.6% 25.0 55s 20239 3497 20.76642 38 364 22.00000 17.83333 18.9% 24.9 60s 20546 3438 20.66667 37 412 22.00000 17.94915 18.4% 24.8 65s 20822 3394 21.00000 40 388 22.00000 18.00000 18.2% 24.9 70s 21578 3257 21.00000 39 394 22.00000 18.14754 17.5% 25.4 75s 23568 2752 cutoff 40 22.00000 18.82353 14.4% 25.1 80s 24990 2236 20.08800 46 336 22.00000 19.24390 12.5% 25.5 85s 27199 1016 cutoff 45 22.00000 20.23288 8.03% 25.5 90s Explored 28334 nodes (713015 simplex iterations) in 91.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%