Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:51:09 2012 Optimize a model with 9247 rows, 1190 columns and 28762 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.11s Presolved: 9279 rows, 1188 columns, 31484 nonzeros Variable types: 0 continuous, 1188 integer (1188 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 3.361702e+00, 8023 iterations, 0.67 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.36170 0 1114 34.00000 3.36170 90.1% - 1s 0 0 4.00000 0 122 34.00000 4.00000 88.2% - 2s H 0 0 33.0000000 4.00000 87.9% - 2s H 0 0 8.0000000 4.00000 50.0% - 2s 0 0 4.66667 0 740 8.00000 4.66667 41.7% - 2s 0 0 4.69670 0 999 8.00000 4.69670 41.3% - 2s 0 0 4.70662 0 998 8.00000 4.70662 41.2% - 3s 0 0 4.70662 0 993 8.00000 4.70662 41.2% - 3s 0 0 4.70662 0 989 8.00000 4.70662 41.2% - 3s 0 0 4.70662 0 993 8.00000 4.70662 41.2% - 3s 0 0 4.70662 0 863 8.00000 4.70662 41.2% - 5s 0 0 4.70662 0 947 8.00000 4.70662 41.2% - 7s 0 0 4.70662 0 931 8.00000 4.70662 41.2% - 7s 0 2 4.71642 0 850 8.00000 4.71642 41.0% - 10s H 27 11 7.0000000 4.80000 31.4% 395 12s 90 18 cutoff 19 7.00000 6.00000 14.3% 232 15s 477 15 cutoff 17 7.00000 6.00000 14.3% 146 20s 703 25 6.00000 12 178 7.00000 6.00000 14.3% 144 25s 708 29 6.00000 13 162 7.00000 6.00000 14.3% 143 31s Explored 713 nodes (157336 simplex iterations) in 32.82 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%