Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:37:56 2012 Optimize a model with 287 rows, 802 columns and 802 nonzeros Model has 572 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 3.34s Presolved: 287 rows, 787 columns, 787 nonzeros Variable types: 572 continuous, 215 integer (214 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 0 147.0000000 - - - 3s 0 0 0.00000 0 2 147.00000 0.00000 100% - 3s 0 0 0.00000 0 4 147.00000 0.00000 100% - 3s 0 0 0.00000 0 105 147.00000 0.00000 100% - 3s 0 2 0.00000 0 104 147.00000 0.00000 100% - 3s H 54 54 42.0000000 1.46875 96.5% 31.6 3s * 67 67 53 34.0000000 1.46875 95.7% 30.9 3s H 188 153 33.0000000 3.05932 90.7% 23.5 3s H 243 177 30.0000000 3.29231 89.0% 25.3 3s * 244 155 24 26.0000000 3.29231 87.3% 25.2 3s 606 350 6.46799 10 477 26.00000 6.46799 75.1% 32.1 5s * 1142 460 38 24.0000000 8.50000 64.6% 39.5 7s H 1555 472 23.0000000 10.86667 52.8% 38.4 8s 2143 564 21.50000 32 458 23.00000 12.43182 45.9% 37.9 10s H 3240 794 22.0000000 13.83333 37.1% 36.3 14s 3295 803 20.77165 30 395 22.00000 13.92617 36.7% 36.2 15s 3841 856 19.50000 32 443 22.00000 14.50000 34.1% 35.8 20s 5168 901 19.00000 29 455 22.00000 15.56962 29.2% 35.5 25s 6223 888 cutoff 33 22.00000 16.15217 26.6% 36.2 30s 7485 788 21.00000 36 436 22.00000 17.00000 22.7% 36.1 35s 8725 589 20.23729 31 449 22.00000 17.84000 18.9% 36.2 40s 9748 312 20.11475 35 459 22.00000 18.83889 14.4% 36.3 45s Explored 10341 nodes (374872 simplex iterations) in 46.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%