Gurobi 5.0.1 (linux64) logging started Tue Nov 20 07:45:37 2012 Optimize a model with 1161 rows, 155 columns and 2322 nonzeros Presolve removed 445 rows and 0 columns Presolve time: 0.01s Presolved: 716 rows, 155 columns, 1864 nonzeros Variable types: 0 continuous, 155 integer (155 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 5.053016e+01, 461 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 50.53016 0 154 33.00000 50.53016 53.1% - 0s 0 0 50.27731 0 154 33.00000 50.27731 52.4% - 0s 0 0 50.18615 0 155 33.00000 50.18615 52.1% - 0s H 0 0 34.0000000 50.18615 47.6% - 0s 0 0 50.09256 0 154 34.00000 50.09256 47.3% - 0s 0 0 49.96840 0 154 34.00000 49.96840 47.0% - 0s 0 0 49.80313 0 154 34.00000 49.80313 46.5% - 0s 0 0 49.72905 0 153 34.00000 49.72905 46.3% - 0s 0 0 49.72050 0 153 34.00000 49.72050 46.2% - 0s 0 0 49.71257 0 153 34.00000 49.71257 46.2% - 0s H 0 0 35.0000000 49.71257 42.0% - 0s H 0 0 37.0000000 49.71257 34.4% - 0s 0 0 49.60244 0 155 37.00000 49.60244 34.1% - 0s 0 0 49.55887 0 155 37.00000 49.55887 33.9% - 0s 0 0 49.29172 0 155 37.00000 49.29172 33.2% - 0s 0 0 49.17826 0 155 37.00000 49.17826 32.9% - 0s 0 0 49.04700 0 155 37.00000 49.04700 32.6% - 0s 0 0 49.01080 0 155 37.00000 49.01080 32.5% - 0s 0 0 48.98375 0 155 37.00000 48.98375 32.4% - 0s 0 0 48.94525 0 154 37.00000 48.94525 32.3% - 0s 0 0 48.90071 0 155 37.00000 48.90071 32.2% - 0s 0 0 48.87577 0 154 37.00000 48.87577 32.1% - 0s 0 0 48.87342 0 155 37.00000 48.87342 32.1% - 0s 0 0 48.80297 0 155 37.00000 48.80297 31.9% - 0s 0 0 48.74132 0 155 37.00000 48.74132 31.7% - 0s 0 0 48.72420 0 155 37.00000 48.72420 31.7% - 0s 0 0 48.69394 0 154 37.00000 48.69394 31.6% - 0s 0 0 48.68962 0 155 37.00000 48.68962 31.6% - 0s 0 0 48.68045 0 154 37.00000 48.68045 31.6% - 0s 0 0 48.67302 0 155 37.00000 48.67302 31.5% - 0s 0 0 48.67302 0 155 37.00000 48.67302 31.5% - 0s 0 2 48.67076 0 155 37.00000 48.67076 31.5% - 0s H 554 224 38.0000000 45.51662 19.8% 48.3 2s 708 296 39.31818 12 154 38.00000 45.32108 19.3% 47.4 5s 1729 592 40.97419 39 107 38.00000 44.77703 17.8% 53.7 10s 3430 1237 39.59006 33 97 38.00000 43.07895 13.4% 46.9 15s 6042 1694 cutoff 42 38.00000 41.92576 10.3% 41.6 20s 9107 1680 39.20134 34 94 38.00000 40.97059 7.82% 38.6 25s 13101 168 39.12500 33 85 38.00000 39.44072 3.79% 35.6 30s Cutting planes: Gomory: 5 Clique: 6 Zero half: 45 Explored 13324 nodes (470634 simplex iterations) in 30.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%