Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:34:44 2012 Optimize a model with 485 rows, 335 columns and 1545 nonzeros Presolve time: 0.00s Presolved: 485 rows, 335 columns, 1545 nonzeros Variable types: 0 continuous, 335 integer (335 binary) Found heuristic solution: objective 112.0000000 Root relaxation: objective 0.000000e+00, 132 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 93 112.00000 0.00000 100% - 0s H 0 0 102.0000000 0.00000 100% - 0s H 0 0 97.0000000 0.00000 100% - 0s 0 0 0.82062 0 96 97.00000 0.82062 99.2% - 0s 0 0 0.88219 0 95 97.00000 0.88219 99.1% - 0s 0 0 0.88965 0 101 97.00000 0.88965 99.1% - 0s H 0 0 75.0000000 0.88965 98.8% - 0s 0 2 0.94651 0 101 75.00000 0.94651 98.7% - 0s H 48 48 71.0000000 4.42432 93.8% 31.1 0s * 56 56 38 66.0000000 4.42432 93.3% 28.5 0s * 58 53 37 65.0000000 4.42432 93.2% 27.6 0s * 99 79 24 56.0000000 4.53119 91.9% 27.8 0s * 272 200 30 55.0000000 11.61798 78.9% 27.3 0s H 1721 746 54.0000000 22.11111 59.1% 26.8 2s H 1860 746 53.0000000 22.47826 57.6% 26.5 2s H 1914 748 52.0000000 22.54545 56.6% 26.5 2s 3580 1409 47.71429 27 161 52.00000 27.42169 47.3% 25.5 5s * 6835 2470 37 51.0000000 32.00000 37.3% 23.9 9s 7476 2622 49.10959 31 157 51.00000 32.50000 36.3% 23.7 10s 11857 3741 43.87013 26 156 51.00000 35.03125 31.3% 22.8 15s 16683 4655 40.39024 24 153 51.00000 36.92453 27.6% 22.1 20s 21692 5382 cutoff 29 51.00000 38.26230 25.0% 21.6 25s 26807 5894 cutoff 29 51.00000 39.28571 23.0% 21.3 30s 32239 6340 48.59459 28 158 51.00000 40.17647 21.2% 20.9 35s 38391 6627 44.85714 27 152 51.00000 41.05405 19.5% 20.4 40s 41002 6744 49.18310 29 146 51.00000 41.40000 18.8% 20.2 51s 45299 6915 44.37838 27 149 51.00000 41.93103 17.8% 20.0 55s 51527 7083 45.42857 26 156 51.00000 42.46809 16.7% 19.6 60s 58206 7016 47.90411 29 149 51.00000 43.00000 15.7% 19.2 65s 64789 6759 cutoff 28 51.00000 43.56604 14.6% 18.9 70s 70903 6389 cutoff 30 51.00000 44.00000 13.7% 18.6 75s 78004 5772 48.45588 28 149 51.00000 44.60000 12.5% 18.4 80s 85214 4858 49.30769 28 144 51.00000 45.26667 11.2% 18.1 85s 92651 3472 47.00000 31 147 51.00000 46.36538 9.09% 17.9 90s Cutting planes: Gomory: 1 Mod-K: 2 Explored 100416 nodes (1757046 simplex iterations) in 94.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.100000000000e+01, best bound 5.100000000000e+01, gap 0.0%