Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:12:19 2012 Optimize a model with 278 rows, 780 columns and 780 nonzeros Model has 554 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 3.23s Presolved: 278 rows, 755 columns, 755 nonzeros Variable types: 554 continuous, 201 integer (200 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 0 137.0000000 - - - 3s 0 0 0.00000 0 114 137.00000 0.00000 100% - 3s 0 0 0.00000 0 102 137.00000 0.00000 100% - 3s 0 0 0.00000 0 102 137.00000 0.00000 100% - 3s 0 2 0.00000 0 102 137.00000 0.00000 100% - 3s H 38 38 33.0000000 2.56250 92.2% 40.9 3s * 56 52 36 26.0000000 2.56250 90.1% 40.4 3s * 557 264 15 25.0000000 10.00000 60.0% 31.7 4s 701 298 20.75000 9 102 25.00000 11.00650 56.0% 31.6 7s 903 406 cutoff 45 25.00000 11.00650 56.0% 37.8 10s 3215 1253 cutoff 35 25.00000 12.66667 49.3% 31.7 15s 5589 2126 cutoff 39 25.00000 14.66923 41.3% 31.0 20s 8078 2839 24.57526 37 411 25.00000 15.78640 36.9% 30.1 25s 10549 3357 19.50000 39 460 25.00000 16.51724 33.9% 29.8 30s 13192 3877 21.95853 35 385 25.00000 17.13477 31.5% 28.9 35s *15445 3652 70 24.0000000 17.59904 26.7% 28.3 39s 15579 3648 20.26974 33 424 24.00000 17.66667 26.4% 28.2 40s 15866 3648 20.85289 33 355 24.00000 17.74000 26.1% 28.2 45s 16252 3636 21.55566 39 367 24.00000 17.86441 25.6% 28.2 50s 16531 3628 20.03375 34 363 24.00000 17.95238 25.2% 28.2 55s 16807 3621 22.94118 33 367 24.00000 18.00000 25.0% 28.2 60s 17029 3612 21.39850 33 453 24.00000 18.00000 25.0% 28.5 65s 18098 3587 20.85714 41 465 24.00000 18.28358 23.8% 28.4 70s 20390 3455 21.99404 35 425 24.00000 18.83255 21.5% 28.2 75s 22036 3273 cutoff 34 24.00000 19.13442 20.3% 28.4 80s 24383 2933 22.64841 39 262 24.00000 19.67568 18.0% 28.3 85s 26514 2493 21.55333 32 449 24.00000 20.09434 16.3% 28.9 90s 28314 1966 21.74894 35 359 24.00000 20.68943 13.8% 28.7 95s 30557 939 cutoff 36 24.00000 21.77778 9.26% 29.0 100s Explored 31694 nodes (912158 simplex iterations) in 101.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000008e+01, best bound 2.400000000008e+01, gap 0.0%