Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:28:34 2012 Optimize a model with 1 rows, 29 columns and 29 nonzeros Model has 196 quadratic objective terms Modified 29 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 29 columns, 29 nonzeros Presolved model has 225 quadratic objective terms Variable types: 0 continuous, 29 integer (29 binary) Found heuristic solution: objective 108.0000000 Root relaxation: objective 0.000000e+00, 31 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 29 108.00000 0.00000 100% - 0s H 0 0 106.0000000 0.00000 100% - 0s H 0 0 100.0000000 0.00000 100% - 0s H 0 0 88.0000000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s 0 2 3.61891 0 29 84.00000 3.61891 95.7% - 0s H 211 177 83.0000000 11.91401 85.6% 2.0 0s H 385 317 81.0000000 12.11595 85.0% 2.1 0s H 388 317 79.0000000 13.07394 83.5% 2.1 0s H 1058 602 77.0000000 18.62932 75.8% 2.1 0s H 1645 744 76.0000000 23.58506 69.0% 2.1 0s H28872 13424 75.0000000 44.44009 40.7% 2.0 1s 83789 31488 60.74526 26 14 75.00000 51.52145 31.3% 2.0 5s 175212 52508 67.78780 29 11 75.00000 56.23777 25.0% 2.0 10s 264254 66424 69.67176 29 11 75.00000 58.93577 21.4% 2.0 15s 355555 75234 72.21924 31 9 75.00000 61.04735 18.6% 2.0 20s 445233 78606 71.77167 29 10 75.00000 62.64419 16.5% 2.0 25s 531450 76913 73.21552 32 8 75.00000 63.94237 14.7% 2.0 30s 620686 70258 71.72389 29 11 75.00000 65.13583 13.2% 2.0 35s 708329 59381 68.74886 29 11 75.00000 66.32786 11.6% 2.0 40s 795788 43268 67.82091 28 12 75.00000 67.82091 9.57% 2.0 45s 881309 17767 73.13083 31 9 75.00000 70.71851 5.71% 2.0 50s Explored 910155 nodes (1836645 simplex iterations) in 51.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.500000000000e+01, best bound 7.500000000000e+01, gap 0.0%