Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:34:04 2012 Optimize a model with 185 rows, 428 columns and 428 nonzeros Model has 368 quadratic constraints Presolve time: 2.15s Presolved: 185 rows, 428 columns, 428 nonzeros Variable types: 368 continuous, 60 integer (60 binary) Root relaxation: objective 0.000000e+00, 30 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 84.0000000 - - - 2s 0 0 0.00000 0 24 84.00000 0.00000 100% - 2s 0 0 0.00000 0 32 84.00000 0.00000 100% - 2s 0 0 0.00000 0 32 84.00000 0.00000 100% - 2s 0 2 0.00000 0 32 84.00000 0.00000 100% - 2s * 39 39 27 60.0000000 7.44792 87.6% 32.1 2s * 41 39 28 56.0000000 7.44792 86.7% 31.6 2s H 74 67 47.0000000 7.50000 84.0% 28.8 2s 1384 622 46.04545 46 228 47.00000 17.01841 63.8% 38.6 5s * 3244 1400 51 46.0000000 21.26531 53.8% 27.9 7s * 3361 1414 42 45.0000000 21.54545 52.1% 27.9 7s 5301 2184 37.36585 43 261 45.00000 25.00000 44.4% 24.5 10s H 5331 2121 44.0000000 25.00000 43.2% 24.5 10s 6115 2351 30.88679 44 258 44.00000 25.85185 41.2% 23.8 15s 9392 3119 34.96000 35 259 44.00000 28.62222 34.9% 21.9 20s 12507 3656 40.57143 44 244 44.00000 30.38710 30.9% 20.9 25s 15496 3956 41.95000 43 223 44.00000 31.68750 28.0% 20.3 30s 19600 4238 39.33333 40 230 44.00000 33.13333 24.7% 19.8 35s 24147 4351 cutoff 39 44.00000 34.57143 21.4% 19.4 40s 28342 4156 cutoff 44 44.00000 35.85714 18.5% 19.2 45s 32167 3742 41.76316 50 212 44.00000 36.95000 16.0% 19.0 50s 36863 2837 42.93878 42 247 44.00000 38.30769 12.9% 18.9 55s 41474 757 cutoff 45 44.00000 40.75000 7.39% 18.7 60s Explored 42610 nodes (787896 simplex iterations) in 60.76 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000005e+01, best bound 4.400000000005e+01, gap 0.0%