Gurobi 5.0.1 (linux64) logging started Tue Nov 20 11:49:55 2012 Optimize a model with 1416 rows, 169 columns and 2832 nonzeros Presolve removed 603 rows and 0 columns Presolve time: 0.01s Presolved: 813 rows, 169 columns, 2225 nonzeros Variable types: 0 continuous, 169 integer (169 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 5.270784e+01, 498 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 52.70784 0 165 30.00000 52.70784 75.7% - 0s H 0 0 32.0000000 52.70784 64.7% - 0s 0 0 52.37936 0 165 32.00000 52.37936 63.7% - 0s H 0 0 35.0000000 52.37936 49.7% - 0s 0 0 52.18801 0 166 35.00000 52.18801 49.1% - 0s 0 0 52.15122 0 167 35.00000 52.15122 49.0% - 0s 0 0 52.07357 0 167 35.00000 52.07357 48.8% - 0s 0 0 51.94080 0 166 35.00000 51.94080 48.4% - 0s 0 0 51.89502 0 165 35.00000 51.89502 48.3% - 0s 0 0 51.78863 0 165 35.00000 51.78863 48.0% - 0s 0 0 51.72286 0 165 35.00000 51.72286 47.8% - 0s 0 0 51.49183 0 163 35.00000 51.49183 47.1% - 0s 0 0 51.30087 0 164 35.00000 51.30087 46.6% - 0s 0 0 51.18169 0 167 35.00000 51.18169 46.2% - 0s 0 0 51.11824 0 165 35.00000 51.11824 46.1% - 0s 0 0 51.05068 0 165 35.00000 51.05068 45.9% - 0s 0 0 51.02454 0 165 35.00000 51.02454 45.8% - 0s 0 0 50.99086 0 166 35.00000 50.99086 45.7% - 0s 0 0 50.93295 0 166 35.00000 50.93295 45.5% - 0s H 0 0 36.0000000 50.93295 41.5% - 0s 0 0 50.88278 0 166 36.00000 50.88278 41.3% - 0s 0 0 50.87854 0 166 36.00000 50.87854 41.3% - 0s 0 0 50.85416 0 166 36.00000 50.85416 41.3% - 0s 0 0 50.85416 0 166 36.00000 50.85416 41.3% - 0s H 0 0 37.0000000 50.85416 37.4% - 1s 0 2 50.85349 0 165 37.00000 50.85349 37.4% - 1s H 72 47 38.0000000 50.33617 32.5% 74.6 1s * 73 40 14 39.0000000 50.33617 29.1% 73.8 1s 606 264 43.60769 13 166 39.00000 47.75577 22.5% 63.2 5s 618 272 43.46584 9 168 39.00000 47.75577 22.5% 62.0 10s 625 277 41.57178 21 166 39.00000 47.75577 22.5% 61.3 15s 634 283 41.21429 8 168 39.00000 47.75577 22.5% 60.4 20s 1018 429 40.51613 27 91 39.00000 47.75494 22.4% 79.0 25s 1990 851 44.14670 20 124 39.00000 46.50215 19.2% 68.0 30s 3200 1518 41.15798 34 109 39.00000 45.66586 17.1% 62.2 35s 4790 2217 43.33333 37 119 39.00000 44.90494 15.1% 56.7 40s 6704 2916 41.99735 22 102 39.00000 44.33988 13.7% 52.3 45s 8454 3413 43.55556 24 120 39.00000 43.88889 12.5% 50.0 50s 10722 3946 41.82703 32 116 39.00000 43.50000 11.5% 47.6 55s 12604 4229 41.72043 29 108 39.00000 43.16667 10.7% 46.1 60s 14172 4397 40.76190 18 92 39.00000 42.93829 10.1% 45.1 65s 17013 4525 40.79104 39 104 39.00000 42.57994 9.18% 43.6 71s 19073 4475 40.92500 25 101 39.00000 42.32688 8.53% 42.7 75s 22030 4207 40.37500 24 91 39.00000 41.97842 7.64% 41.7 80s 24961 3617 40.07027 24 87 39.00000 41.62500 6.73% 40.9 85s 27962 2466 cutoff 29 39.00000 41.20714 5.66% 40.3 90s Cutting planes: Clique: 10 Zero half: 114 Explored 31668 nodes (1225841 simplex iterations) in 94.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%