Gurobi 5.0.1 (linux64) logging started Tue Nov 20 14:26:23 2012 Optimize a model with 878 rows, 189 columns and 1756 nonzeros Presolve removed 168 rows and 0 columns Presolve time: 0.00s Presolved: 710 rows, 189 columns, 1535 nonzeros Variable types: 0 continuous, 189 integer (189 binary) Found heuristic solution: objective 57.0000000 Root relaxation: objective 7.750000e+01, 319 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 77.50000 0 151 57.00000 77.50000 36.0% - 0s 0 0 76.00000 0 150 57.00000 76.00000 33.3% - 0s 0 0 75.43836 0 183 57.00000 75.43836 32.3% - 0s 0 0 74.06741 0 188 57.00000 74.06741 29.9% - 0s 0 0 73.30522 0 187 57.00000 73.30522 28.6% - 0s 0 0 72.46380 0 188 57.00000 72.46380 27.1% - 0s 0 0 72.20794 0 187 57.00000 72.20794 26.7% - 0s 0 0 71.90246 0 188 57.00000 71.90246 26.1% - 0s 0 0 71.76623 0 188 57.00000 71.76623 25.9% - 0s 0 0 71.64756 0 187 57.00000 71.64756 25.7% - 0s H 0 0 58.0000000 71.64756 23.5% - 0s 0 0 71.58345 0 186 58.00000 71.58345 23.4% - 0s 0 0 71.52693 0 187 58.00000 71.52693 23.3% - 0s 0 0 71.39823 0 186 58.00000 71.39823 23.1% - 0s 0 0 71.26485 0 184 58.00000 71.26485 22.9% - 0s H 0 0 60.0000000 71.26485 18.8% - 0s 0 0 71.17830 0 186 60.00000 71.17830 18.6% - 0s 0 0 71.17589 0 187 60.00000 71.17589 18.6% - 0s 0 0 71.17589 0 186 60.00000 71.17589 18.6% - 0s 0 2 71.17486 0 186 60.00000 71.17486 18.6% - 0s H 136 82 61.0000000 70.13365 15.0% 61.5 0s H 522 241 62.0000000 68.76267 10.9% 51.9 1s 711 326 64.80000 16 186 62.00000 68.47012 10.4% 50.0 5s 719 331 65.51012 13 186 62.00000 68.47012 10.4% 49.4 10s 1654 551 63.50000 33 127 62.00000 67.61703 9.06% 58.7 15s 2979 1014 64.00000 24 137 62.00000 66.60000 7.42% 54.3 20s 4586 1343 64.13158 25 136 62.00000 65.90849 6.30% 51.2 25s 6352 1464 64.45487 25 138 62.00000 65.33641 5.38% 48.8 30s 8114 1360 63.64348 33 145 62.00000 64.84354 4.59% 47.0 35s 9874 1031 63.03333 31 132 62.00000 64.37736 3.83% 45.7 40s Cutting planes: Gomory: 2 Clique: 1 Zero half: 260 Explored 11869 nodes (518948 simplex iterations) in 43.28 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%