Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:21:29 2012 Optimize a model with 1 rows, 51 columns and 51 nonzeros Model has 145 quadratic objective terms Modified 51 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 51 columns, 51 nonzeros Presolved model has 196 quadratic objective terms Variable types: 0 continuous, 51 integer (51 binary) Found heuristic solution: objective 77.0000000 Root relaxation: objective 0.000000e+00, 53 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 51 77.00000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 2 2.04889 0 51 39.00000 2.04889 94.7% - 0s H 283 244 38.0000000 6.89410 81.9% 2.2 0s H 298 248 37.0000000 6.89410 81.4% 2.2 0s H 644 471 35.0000000 7.41968 78.8% 2.3 0s 59418 28000 27.65410 25 36 35.00000 24.36023 30.4% 2.3 5s 120859 49261 31.37820 27 34 35.00000 26.12293 25.4% 2.3 10s 182115 66114 32.70980 33 27 35.00000 27.12350 22.5% 2.3 15s 243150 79760 30.02248 28 30 35.00000 27.84247 20.5% 2.3 20s 304434 90787 33.33066 34 26 35.00000 28.39370 18.9% 2.3 25s 365496 99420 31.74875 34 27 35.00000 28.85640 17.6% 2.3 30s 425689 105817 33.05998 29 31 35.00000 29.25483 16.4% 2.3 35s 485703 109993 32.50906 34 24 35.00000 29.60563 15.4% 2.3 40s 545688 111995 33.55988 30 29 35.00000 29.93199 14.5% 2.3 45s 605540 111933 33.58155 31 30 35.00000 30.22815 13.6% 2.3 50s 665297 109995 cutoff 30 35.00000 30.50842 12.8% 2.3 55s 725366 105938 33.75301 30 31 35.00000 30.78148 12.1% 2.3 60s 785699 99835 33.90432 32 29 35.00000 31.05607 11.3% 2.3 65s 845446 91417 cutoff 35 35.00000 31.33842 10.5% 2.3 70s 905085 80511 32.65071 32 27 35.00000 31.64485 9.59% 2.3 75s 964368 66676 32.38404 29 31 35.00000 31.99009 8.60% 2.3 80s 1023722 48930 33.64034 30 31 35.00000 32.42951 7.34% 2.3 85s 1082088 24388 33.09320 36 25 35.00000 33.09320 5.45% 2.3 90s Explored 1115479 nodes (2618484 simplex iterations) in 93.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%