Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:53:02 2012 Optimize a model with 283 rows, 787 columns and 787 nonzeros Model has 564 quadratic constraints Presolve removed 0 rows and 20 columns Presolve time: 3.29s Presolved: 283 rows, 767 columns, 767 nonzeros Variable types: 564 continuous, 203 integer (202 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 0 144.0000000 - - - 3s 0 0 0.00000 0 58 144.00000 0.00000 100% - 3s 0 0 0.00000 0 106 144.00000 0.00000 100% - 3s 0 0 0.00000 0 95 144.00000 0.00000 100% - 3s 0 2 0.00000 0 63 144.00000 0.00000 100% - 3s H 54 54 44.0000000 2.37876 94.6% 30.5 3s H 80 80 35.0000000 2.37876 93.2% 26.3 3s * 151 124 40 34.0000000 2.49857 92.7% 22.7 3s H 277 221 32.0000000 4.08696 87.2% 21.6 3s * 282 209 43 31.0000000 4.08696 86.8% 21.9 3s * 316 186 26 28.0000000 4.09583 85.4% 22.9 3s H 369 216 27.0000000 4.69565 82.6% 23.0 3s 606 342 6.52174 10 452 27.00000 6.52174 75.8% 26.3 5s 2298 927 24.63634 39 393 27.00000 12.33758 54.3% 32.3 10s 4638 1924 cutoff 34 27.00000 14.71429 45.5% 30.0 15s * 4710 1804 45 26.0000000 14.76056 43.2% 30.1 15s H 5374 1783 25.0000000 15.21225 39.2% 31.3 16s 6582 2027 22.36625 33 413 25.00000 15.95385 36.2% 31.2 20s 7050 2086 20.60804 33 427 25.00000 16.18496 35.3% 31.7 25s 7355 2135 20.89873 29 410 25.00000 16.40071 34.4% 31.4 30s 8158 2228 22.28947 30 405 25.00000 16.75000 33.0% 31.5 35s 8980 2316 21.59677 31 428 25.00000 17.00000 32.0% 31.9 40s 10214 2394 23.00000 30 436 25.00000 17.51724 29.9% 31.8 45s 12168 2550 23.68382 31 401 25.00000 18.08736 27.7% 31.2 50s 14194 2642 21.79268 27 439 25.00000 18.64244 25.4% 30.6 55s 16529 2666 23.00000 29 415 25.00000 19.17557 23.3% 30.6 60s 18808 2622 23.80702 34 433 25.00000 19.66678 21.3% 30.0 65s 21179 2490 23.62712 35 329 25.00000 20.09249 19.6% 29.9 70s 23765 2230 23.00000 34 436 25.00000 20.57261 17.7% 29.4 75s 26172 1884 22.97938 32 482 25.00000 21.00000 16.0% 29.5 80s 28858 1298 cutoff 40 25.00000 21.64605 13.4% 28.9 85s Explored 31820 nodes (898613 simplex iterations) in 89.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000008e+01, best bound 2.500000000008e+01, gap 0.0%