Gurobi 5.0.1 (linux64) logging started Tue Nov 20 14:50:09 2012 Optimize a model with 963 rows, 192 columns and 1926 nonzeros Presolve removed 230 rows and 0 columns Presolve time: 0.01s Presolved: 733 rows, 192 columns, 1626 nonzeros Variable types: 0 continuous, 192 integer (192 binary) Found heuristic solution: objective 53.0000000 Root relaxation: objective 7.560000e+01, 463 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 75.60000 0 178 53.00000 75.60000 42.6% - 0s 0 0 74.22006 0 192 53.00000 74.22006 40.0% - 0s 0 0 73.34022 0 192 53.00000 73.34022 38.4% - 0s 0 0 72.46242 0 191 53.00000 72.46242 36.7% - 0s 0 0 71.81767 0 192 53.00000 71.81767 35.5% - 0s 0 0 71.59574 0 192 53.00000 71.59574 35.1% - 0s 0 0 71.47291 0 192 53.00000 71.47291 34.9% - 0s 0 0 71.38745 0 190 53.00000 71.38745 34.7% - 0s 0 0 71.29004 0 192 53.00000 71.29004 34.5% - 0s 0 0 71.18049 0 192 53.00000 71.18049 34.3% - 0s 0 0 71.07983 0 192 53.00000 71.07983 34.1% - 0s 0 0 70.87093 0 190 53.00000 70.87093 33.7% - 0s 0 0 70.63179 0 191 53.00000 70.63179 33.3% - 0s 0 0 70.45310 0 190 53.00000 70.45310 32.9% - 0s 0 0 70.26740 0 191 53.00000 70.26740 32.6% - 0s 0 0 70.12373 0 188 53.00000 70.12373 32.3% - 0s 0 0 69.94606 0 188 53.00000 69.94606 32.0% - 0s 0 0 69.84600 0 191 53.00000 69.84600 31.8% - 0s 0 0 69.74859 0 192 53.00000 69.74859 31.6% - 0s H 0 0 55.0000000 69.74859 26.8% - 0s H 0 0 56.0000000 69.74859 24.6% - 0s 0 0 69.68980 0 190 56.00000 69.68980 24.4% - 0s 0 0 69.65822 0 189 56.00000 69.65822 24.4% - 0s 0 0 69.63538 0 192 56.00000 69.63538 24.3% - 0s 0 0 69.63538 0 189 56.00000 69.63538 24.3% - 0s 0 2 69.63337 0 189 56.00000 69.63337 24.3% - 0s H 56 33 58.0000000 69.08870 19.1% 71.1 0s H 249 127 59.0000000 68.09597 15.4% 72.5 1s H 442 175 60.0000000 67.10879 11.8% 69.3 1s 608 239 65.00426 12 190 60.00000 66.76385 11.3% 67.0 5s 1323 450 cutoff 26 60.00000 66.52112 10.9% 69.3 10s 2677 999 64.00000 26 118 60.00000 65.30572 8.84% 58.2 15s 4627 1497 cutoff 29 60.00000 64.33333 7.22% 50.4 20s 6975 1755 61.54667 23 138 60.00000 63.59524 5.99% 46.2 25s 9310 1638 61.25000 35 131 60.00000 63.00000 5.00% 44.0 30s 12589 861 cutoff 31 60.00000 62.15476 3.59% 41.6 35s Cutting planes: Gomory: 8 Clique: 1 Zero half: 77 Explored 14017 nodes (565222 simplex iterations) in 37.92 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+01, best bound 6.000000000000e+01, gap 0.0%