Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:48:53 2012 Optimize a model with 282 rows, 784 columns and 784 nonzeros Model has 562 quadratic constraints Presolve removed 0 rows and 27 columns Presolve time: 3.28s Presolved: 282 rows, 757 columns, 757 nonzeros Variable types: 562 continuous, 195 integer (194 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 0 125.0000000 - - - 3s 0 0 0.00000 0 136 125.00000 0.00000 100% - 3s 0 0 0.01083 0 162 125.00000 0.01083 100% - 3s 0 2 0.04528 0 162 125.00000 0.04528 100% - 3s H 54 54 32.0000000 1.52809 95.2% 30.4 3s * 55 53 29 27.0000000 1.52809 94.3% 30.2 3s 606 314 9.76000 15 444 27.00000 9.76000 63.9% 37.6 5s 2225 892 13.42487 33 448 27.00000 12.86301 52.4% 37.9 10s * 2943 1162 51 26.0000000 14.03403 46.0% 35.6 11s 4532 1623 21.72682 39 447 26.00000 15.54111 40.2% 34.7 15s 5145 1789 22.92487 39 431 26.00000 15.97529 38.6% 34.6 20s 5363 1828 21.16025 39 451 26.00000 16.22993 37.6% 34.4 25s 6461 2047 22.93157 37 433 26.00000 16.87075 35.1% 33.9 30s 7347 2171 24.57692 39 426 26.00000 17.32225 33.4% 33.4 35s 8400 2279 25.00000 39 441 26.00000 17.77741 31.6% 33.4 40s 9331 2359 21.18343 44 445 26.00000 18.19885 30.0% 33.2 45s 11410 2465 22.31770 39 378 26.00000 18.88613 27.4% 33.1 50s 13208 2461 22.20141 39 429 26.00000 19.42487 25.3% 33.1 55s 15339 2357 23.05263 46 445 26.00000 20.00077 23.1% 33.4 61s 17259 2099 23.21406 36 418 26.00000 20.67395 20.5% 33.1 65s 19648 1642 24.68760 39 438 26.00000 21.43157 17.6% 33.1 70s 22104 817 cutoff 41 26.00000 22.53576 13.3% 32.9 75s Explored 23480 nodes (763462 simplex iterations) in 77.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%