Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:23:22 2012 Optimize a model with 902 rows, 840 columns and 3620 nonzeros Presolve removed 156 rows and 40 columns Presolve time: 0.03s Presolved: 746 rows, 800 columns, 3368 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 1.513815e+02, 521 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 151.38150 0 43 - 151.38150 - - 0s 0 0 159.35130 0 50 - 159.35130 - - 0s 0 0 161.91653 0 46 - 161.91653 - - 0s 0 0 163.34000 0 50 - 163.34000 - - 0s 0 0 163.38544 0 47 - 163.38544 - - 0s 0 0 163.38633 0 47 - 163.38633 - - 0s 0 0 164.33759 0 53 - 164.33759 - - 0s 0 0 164.37294 0 55 - 164.37294 - - 0s 0 0 164.37294 0 51 - 164.37294 - - 0s 0 0 164.37294 0 54 - 164.37294 - - 0s 0 0 164.37294 0 54 - 164.37294 - - 0s 0 2 164.37564 0 54 - 164.37564 - - 0s 1444 774 196.73429 43 36 - 182.80883 - 53.9 5s * 1653 825 69 268.0000000 183.01356 31.7% 51.9 5s H 1809 815 237.0000000 183.41556 22.6% 51.3 6s H 1837 783 225.0000000 183.41556 18.5% 52.7 7s H 3070 1071 222.0000000 191.26662 13.8% 44.5 9s 3476 1178 207.23336 77 31 222.00000 192.32207 13.4% 42.7 10s H 7081 2552 219.0000000 197.13334 10.0% 36.3 14s 7811 2776 208.16887 46 29 219.00000 197.88627 9.64% 35.6 15s 12978 4085 217.30758 40 36 219.00000 201.70180 7.90% 32.7 20s 18549 4701 212.11585 66 15 219.00000 204.65581 6.55% 31.3 25s 24437 4591 215.47939 51 19 219.00000 207.35089 5.32% 29.8 30s 31324 3340 cutoff 47 219.00000 210.51178 3.88% 28.3 35s *34670 1770 49 218.0000000 212.71767 2.42% 27.6 37s Cutting planes: Gomory: 11 Cover: 1 Implied bound: 2 Flow cover: 12 GUB cover: 1 Explored 36843 nodes (983405 simplex iterations) in 38.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.180000000000e+02, best bound 2.180000000000e+02, gap 0.0%