Gurobi 5.0.1 (linux64) logging started Tue Nov 20 13:28:25 2012 Optimize a model with 798 rows, 179 columns and 1596 nonzeros Presolve removed 180 rows and 3 columns Presolve time: 0.00s Presolved: 618 rows, 176 columns, 1338 nonzeros Variable types: 0 continuous, 176 integer (176 binary) Found heuristic solution: objective 49.0000000 Root relaxation: objective 7.100000e+01, 303 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 71.00000 0 134 49.00000 71.00000 44.9% - 0s H 0 0 50.0000000 71.00000 42.0% - 0s 0 0 70.50000 0 137 50.00000 70.50000 41.0% - 0s 0 0 69.81250 0 157 50.00000 69.81250 39.6% - 0s H 0 0 51.0000000 69.81250 36.9% - 0s 0 0 69.07075 0 171 51.00000 69.07075 35.4% - 0s H 0 0 54.0000000 69.07075 27.9% - 0s 0 0 67.97388 0 173 54.00000 67.97388 25.9% - 0s 0 0 67.75583 0 172 54.00000 67.75583 25.5% - 0s 0 0 67.64493 0 174 54.00000 67.64493 25.3% - 0s 0 0 67.40573 0 172 54.00000 67.40573 24.8% - 0s 0 0 67.24432 0 175 54.00000 67.24432 24.5% - 0s 0 0 67.17142 0 174 54.00000 67.17142 24.4% - 0s 0 0 67.15798 0 174 54.00000 67.15798 24.4% - 0s 0 0 67.15798 0 172 54.00000 67.15798 24.4% - 0s 0 2 67.15764 0 172 54.00000 67.15764 24.4% - 0s * 15 15 10 57.0000000 67.15764 17.8% 58.6 0s 613 315 61.42857 13 174 57.00000 64.79725 13.7% 47.8 5s 625 323 62.00000 10 174 57.00000 64.79725 13.7% 46.8 10s 652 343 62.74510 18 141 57.00000 64.79725 13.7% 53.2 15s 2012 865 62.27011 20 143 57.00000 63.27872 11.0% 50.7 20s 3554 1677 59.83333 19 116 57.00000 62.62500 9.87% 46.1 25s 5926 2682 cutoff 42 57.00000 61.89050 8.58% 41.3 30s 8107 3405 59.66667 26 121 57.00000 61.53947 7.96% 38.6 35s 10951 4215 cutoff 39 57.00000 61.12500 7.24% 36.2 40s 12605 4624 58.00000 35 121 57.00000 60.96429 6.95% 35.2 45s 15895 5207 58.00000 27 101 57.00000 60.62500 6.36% 33.7 50s 19566 5583 58.33333 36 120 57.00000 60.32558 5.83% 32.4 55s 22228 5664 59.11111 24 125 57.00000 60.10870 5.45% 31.9 60s 26006 5679 59.10909 26 125 57.00000 59.91667 5.12% 31.0 65s 29764 5465 cutoff 27 57.00000 59.63072 4.62% 30.3 70s 33660 4977 58.00000 30 96 57.00000 59.40000 4.21% 29.6 75s 37594 4036 58.11765 39 128 57.00000 59.08333 3.65% 29.1 80s 41807 2515 cutoff 29 57.00000 58.81395 3.18% 28.5 85s Cutting planes: Gomory: 2 Zero half: 277 Mod-K: 1 Explored 45896 nodes (1258802 simplex iterations) in 89.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.700000000000e+01, best bound 5.700000000000e+01, gap 0.0%