Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:12:37 2012 Optimize a model with 174 rows, 373 columns and 373 nonzeros Model has 346 quadratic constraints Presolve time: 2.00s Presolved: 174 rows, 373 columns, 373 nonzeros Variable types: 346 continuous, 27 integer (27 binary) Root relaxation: objective 0.000000e+00, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 96.0000000 - - - 2s 0 0 0.00000 0 22 96.00000 0.00000 100% - 2s 0 0 0.38384 0 27 96.00000 0.38384 100% - 2s 0 2 0.40559 0 27 96.00000 0.40559 100% - 2s * 35 35 18 79.0000000 6.69091 91.5% 45.4 2s * 38 34 19 78.0000000 6.69091 91.4% 42.2 2s H 68 52 72.0000000 7.09091 90.2% 40.8 2s * 265 199 19 71.0000000 14.00000 80.3% 41.3 2s * 269 195 16 70.0000000 14.00000 80.0% 40.8 2s 784 415 27.87307 25 211 70.00000 27.87307 60.2% 50.2 5s * 5217 1707 45 69.0000000 44.88235 35.0% 25.4 8s 6385 1950 52.57895 27 234 69.00000 47.12500 31.7% 24.2 10s H 7189 2043 68.0000000 48.33333 28.9% 23.7 10s 8752 2234 66.12500 33 215 68.00000 50.66667 25.5% 22.9 15s 14571 2342 66.62500 36 217 68.00000 56.42857 17.0% 21.1 20s 20647 1072 cutoff 40 68.00000 62.25000 8.46% 19.9 25s Explored 22247 nodes (431474 simplex iterations) in 25.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.800000000000e+01, best bound 6.800000000000e+01, gap 0.0%