Gurobi 5.0.1 (linux64) logging started Mon Nov 19 09:06:33 2012 Optimize a model with 6523 rows, 162 columns and 13046 nonzeros Presolve removed 4728 rows and 0 columns Presolve time: 0.29s Presolved: 1795 rows, 162 columns, 13305 nonzeros Variable types: 0 continuous, 162 integer (162 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.999715e+01, 810 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19.99715 0 161 7.00000 19.99715 186% - 0s H 0 0 8.0000000 19.99715 150% - 0s H 0 0 9.0000000 19.99715 122% - 0s 0 0 19.58619 0 162 9.00000 19.58619 118% - 0s 0 0 19.47988 0 162 9.00000 19.47988 116% - 0s 0 0 19.37626 0 161 9.00000 19.37626 115% - 1s 0 0 19.35257 0 162 9.00000 19.35257 115% - 1s 0 0 19.31236 0 161 9.00000 19.31236 115% - 1s 0 0 19.29527 0 161 9.00000 19.29527 114% - 1s 0 0 19.28143 0 161 9.00000 19.28143 114% - 2s 0 0 19.26568 0 161 9.00000 19.26568 114% - 2s 0 0 19.25847 0 162 9.00000 19.25847 114% - 2s 0 0 19.25676 0 162 9.00000 19.25676 114% - 2s 0 0 19.25545 0 162 9.00000 19.25545 114% - 2s 0 0 19.25500 0 162 9.00000 19.25500 114% - 3s 0 0 19.24972 0 162 9.00000 19.24972 114% - 3s 0 0 19.24174 0 162 9.00000 19.24174 114% - 3s 0 0 19.23908 0 162 9.00000 19.23908 114% - 3s 0 0 19.23738 0 162 9.00000 19.23738 114% - 3s 0 0 19.23664 0 162 9.00000 19.23664 114% - 4s 0 0 19.23663 0 162 9.00000 19.23663 114% - 4s H 0 0 10.0000000 19.23663 92.4% - 4s 0 2 19.23435 0 162 10.00000 19.23435 92.3% - 5s 405 259 14.05995 13 77 10.00000 17.73851 77.4% 92.1 10s 601 368 13.03319 59 162 10.00000 16.73240 67.3% 89.7 16s 614 379 16.73240 16 160 10.00000 16.73240 67.3% 92.1 20s 705 437 cutoff 61 10.00000 15.60792 56.1% 133 25s 1295 456 11.58609 46 56 10.00000 14.51037 45.1% 100 30s 1667 421 12.78413 35 70 10.00000 13.97776 39.8% 88.5 35s 2165 498 12.40025 49 62 10.00000 13.53907 35.4% 79.0 40s 2837 364 11.26630 22 41 10.00000 12.22870 22.3% 72.6 45s Cutting planes: Clique: 78 Explored 3442 nodes (221737 simplex iterations) in 46.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%