Gurobi 5.0.1 (linux64) logging started Tue Nov 20 14:03:28 2012 Optimize a model with 896 rows, 186 columns and 1792 nonzeros Presolve removed 193 rows and 0 columns Presolve time: 0.01s Presolved: 703 rows, 186 columns, 1542 nonzeros Variable types: 0 continuous, 186 integer (186 binary) Found heuristic solution: objective 52.0000000 Root relaxation: objective 7.400000e+01, 362 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 74.00000 0 146 52.00000 74.00000 42.3% - 0s 0 0 73.01613 0 184 52.00000 73.01613 40.4% - 0s H 0 0 55.0000000 73.01613 32.8% - 0s 0 0 72.32613 0 186 55.00000 72.32613 31.5% - 0s 0 0 71.62868 0 186 55.00000 71.62868 30.2% - 0s 0 0 71.32791 0 186 55.00000 71.32791 29.7% - 0s 0 0 71.06925 0 186 55.00000 71.06925 29.2% - 0s 0 0 70.82485 0 185 55.00000 70.82485 28.8% - 0s 0 0 70.56108 0 186 55.00000 70.56108 28.3% - 0s 0 0 70.21106 0 185 55.00000 70.21106 27.7% - 0s 0 0 69.98382 0 185 55.00000 69.98382 27.2% - 0s 0 0 69.83791 0 183 55.00000 69.83791 27.0% - 0s H 0 0 56.0000000 69.83791 24.7% - 0s 0 0 69.74172 0 186 56.00000 69.74172 24.5% - 0s 0 0 69.66862 0 186 56.00000 69.66862 24.4% - 0s H 0 0 57.0000000 69.66862 22.2% - 0s H 0 0 58.0000000 69.66862 20.1% - 0s 0 0 69.60075 0 186 58.00000 69.60075 20.0% - 0s 0 0 69.53504 0 186 58.00000 69.53504 19.9% - 0s 0 0 69.46578 0 184 58.00000 69.46578 19.8% - 0s 0 0 69.43811 0 186 58.00000 69.43811 19.7% - 0s 0 0 69.43811 0 186 58.00000 69.43811 19.7% - 0s 0 2 69.43773 0 186 58.00000 69.43773 19.7% - 0s 609 301 60.98305 14 185 58.00000 66.98840 15.5% 54.8 5s 1951 893 63.90000 23 136 58.00000 66.00275 13.8% 53.5 10s 4390 2203 63.55882 28 157 58.00000 64.76632 11.7% 43.5 15s H 6017 2653 59.0000000 64.32973 9.03% 41.0 17s 7213 3018 60.00000 32 110 59.00000 64.00000 8.47% 40.0 20s 10284 3824 60.00000 29 121 59.00000 63.50000 7.63% 37.9 25s 14510 4470 60.70732 32 133 59.00000 62.94737 6.69% 35.9 30s 18477 4646 61.46154 23 119 59.00000 62.50000 5.93% 34.5 35s 23078 4317 60.40000 28 118 59.00000 62.00000 5.08% 33.4 40s 27870 3392 cutoff 26 59.00000 61.50000 4.24% 32.5 45s 32980 1144 cutoff 30 59.00000 60.72973 2.93% 31.7 50s Cutting planes: Gomory: 5 Clique: 1 Zero half: 81 Explored 34487 nodes (1070468 simplex iterations) in 50.92 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.900000000000e+01, best bound 5.900000000000e+01, gap 0.0%