Gurobi 5.0.1 (linux64) logging started Tue Nov 20 14:50:47 2012 Optimize a model with 931 rows, 192 columns and 1862 nonzeros Presolve removed 237 rows and 0 columns Presolve time: 0.01s Presolved: 694 rows, 192 columns, 1549 nonzeros Variable types: 0 continuous, 192 integer (192 binary) Found heuristic solution: objective 53.0000000 Root relaxation: objective 7.402105e+01, 429 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 74.02105 0 184 53.00000 74.02105 39.7% - 0s 0 0 72.71233 0 183 53.00000 72.71233 37.2% - 0s H 0 0 54.0000000 72.71233 34.7% - 0s H 0 0 56.0000000 72.71233 29.8% - 0s 0 0 72.26075 0 188 56.00000 72.26075 29.0% - 0s 0 0 71.72177 0 187 56.00000 71.72177 28.1% - 0s 0 0 70.98179 0 190 56.00000 70.98179 26.8% - 0s H 0 0 57.0000000 70.98179 24.5% - 0s 0 0 70.80866 0 191 57.00000 70.80866 24.2% - 0s 0 0 70.61605 0 186 57.00000 70.61605 23.9% - 0s 0 0 70.44396 0 190 57.00000 70.44396 23.6% - 0s 0 0 70.39564 0 190 57.00000 70.39564 23.5% - 0s 0 0 70.25182 0 189 57.00000 70.25182 23.2% - 0s 0 0 70.12174 0 189 57.00000 70.12174 23.0% - 0s 0 0 70.03155 0 191 57.00000 70.03155 22.9% - 0s 0 0 70.00699 0 191 57.00000 70.00699 22.8% - 0s 0 0 70.00699 0 191 57.00000 70.00699 22.8% - 0s H 0 0 61.0000000 70.00699 14.8% - 0s 0 2 70.00619 0 191 61.00000 70.00619 14.8% - 0s H 165 68 62.0000000 68.84252 11.0% 59.2 0s 608 208 64.43269 21 191 62.00000 67.44100 8.78% 56.4 5s 1002 291 65.06294 15 161 62.00000 67.28951 8.53% 64.1 10s 2598 408 63.69336 24 140 62.00000 64.90476 4.69% 53.6 15s Cutting planes: Gomory: 1 Clique: 1 Zero half: 150 Mod-K: 1 Explored 3847 nodes (186240 simplex iterations) in 17.92 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.200000000000e+01, best bound 6.200000000000e+01, gap 0.0%