Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:33:31 2012 Optimize a model with 167 rows, 409 columns and 409 nonzeros Model has 332 quadratic constraints Presolve time: 1.94s Presolved: 167 rows, 409 columns, 409 nonzeros Variable types: 332 continuous, 77 integer (77 binary) Root relaxation: objective 0.000000e+00, 38 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 90.0000000 - - - 1s 0 0 0.00000 0 23 90.00000 0.00000 100% - 1s 0 0 0.00000 0 31 90.00000 0.00000 100% - 1s 0 0 0.00000 0 73 90.00000 0.00000 100% - 1s 0 2 0.00000 0 73 90.00000 0.00000 100% - 1s H 48 48 36.0000000 4.00000 88.9% 41.0 2s * 48 48 26 35.0000000 4.00000 88.6% 41.1 2s * 129 97 23 32.0000000 4.54253 85.8% 34.7 2s 1912 725 22.15104 33 245 32.00000 13.81643 56.8% 28.7 5s 6837 2709 27.65023 39 243 32.00000 19.66567 38.5% 20.7 10s 12021 4249 30.51147 38 257 32.00000 21.87500 31.6% 19.0 15s *13817 4307 42 31.0000000 22.37500 27.8% 18.7 16s 14204 4324 28.47012 37 236 31.00000 22.53143 27.3% 18.6 20s 15270 4410 29.25398 38 236 31.00000 22.89536 26.1% 18.5 25s *16050 3868 53 30.0000000 23.12760 22.9% 18.3 25s 19214 3546 cutoff 37 30.00000 24.41786 18.6% 18.1 30s 22260 2852 27.06060 34 243 30.00000 25.56254 14.8% 18.0 35s 26438 406 cutoff 38 30.00000 28.50939 4.97% 17.7 40s Explored 26846 nodes (472409 simplex iterations) in 40.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%