Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:19:56 2012 Optimize a model with 207 rows, 442 columns and 442 nonzeros Model has 412 quadratic constraints Presolve time: 2.41s Presolved: 207 rows, 442 columns, 442 nonzeros Variable types: 412 continuous, 30 integer (30 binary) Root relaxation: objective 0.000000e+00, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 110.0000000 - - - 2s 0 0 0.00000 0 30 110.00000 0.00000 100% - 2s 0 0 0.57692 0 30 110.00000 0.57692 99.5% - 2s 0 0 0.57692 0 30 110.00000 0.57692 99.5% - 2s 0 2 0.57692 0 30 110.00000 0.57692 99.5% - 2s * 39 37 22 88.0000000 8.95385 89.8% 45.2 2s * 40 36 22 87.0000000 8.95385 89.7% 44.2 2s H 77 63 86.0000000 9.00000 89.5% 42.5 2s * 260 204 21 82.0000000 17.03497 79.2% 49.2 2s * 263 186 19 80.0000000 17.03497 78.7% 48.7 2s 851 422 cutoff 50 80.00000 31.38462 60.8% 58.0 5s 4733 1452 75.28571 45 245 80.00000 47.75000 40.3% 33.1 10s 9190 2313 76.76471 37 251 80.00000 55.42857 30.7% 28.6 15s 13792 2868 75.05556 33 256 80.00000 59.92308 25.1% 26.8 20s 18307 2954 76.33333 45 221 80.00000 63.00000 21.2% 26.1 25s 23175 2879 79.92308 42 225 80.00000 65.90909 17.6% 25.3 30s 28150 2462 72.44444 41 249 80.00000 68.80000 14.0% 24.8 35s *30964 1837 39 79.0000000 70.66667 10.5% 24.5 37s 31369 1689 76.66667 39 206 79.00000 71.00000 10.1% 24.5 40s 33313 521 76.86667 44 207 79.00000 75.00000 5.06% 24.3 45s Explored 33901 nodes (817526 simplex iterations) in 45.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.900000000051e+01, best bound 7.900000000051e+01, gap 0.0%