Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:41:00 2012 Optimize a model with 174 rows, 425 columns and 425 nonzeros Model has 346 quadratic constraints Presolve time: 2.01s Presolved: 174 rows, 425 columns, 425 nonzeros Variable types: 346 continuous, 79 integer (79 binary) Root relaxation: objective 0.000000e+00, 39 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 35 84.00000 0.00000 100% - 2s 0 0 0.00000 0 74 84.00000 0.00000 100% - 2s 0 0 0.00000 0 71 84.00000 0.00000 100% - 2s 0 2 0.00000 0 71 84.00000 0.00000 100% - 2s H 54 54 47.0000000 5.02152 89.3% 34.5 2s * 64 63 34 40.0000000 5.02152 87.4% 32.3 2s * 67 61 36 39.0000000 5.02152 87.1% 31.2 2s * 142 117 22 38.0000000 6.50000 82.9% 29.3 2s * 316 233 19 37.0000000 9.88966 73.3% 31.8 2s * 943 473 53 36.0000000 15.01923 58.3% 38.8 4s * 1480 540 39 35.0000000 16.33333 53.3% 32.7 4s 1659 527 30.75000 41 224 35.00000 16.82353 51.9% 31.0 5s H 2979 799 34.0000000 21.32000 37.3% 25.5 6s 5147 1091 28.84615 33 262 34.00000 24.70588 27.3% 22.0 10s * 6263 1081 45 33.0000000 25.85714 21.6% 21.1 12s 7886 952 cutoff 38 33.00000 27.52727 16.6% 20.5 15s Explored 10323 nodes (202987 simplex iterations) in 18.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%