Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:07:34 2012 Optimize a model with 447 rows, 320 columns and 1435 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 447 rows, 319 columns, 1434 nonzeros Variable types: 0 continuous, 319 integer (318 binary) Found heuristic solution: objective 98.0000000 Root relaxation: objective 0.000000e+00, 128 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 95 98.00000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s 0 0 0.66935 0 96 78.00000 0.66935 99.1% - 0s H 0 0 74.0000000 0.66935 99.1% - 0s 0 0 1.39761 0 97 74.00000 1.39761 98.1% - 0s H 0 0 68.0000000 1.39761 97.9% - 0s 0 0 1.49530 0 98 68.00000 1.49530 97.8% - 0s H 0 0 66.0000000 1.49530 97.7% - 0s 0 0 1.49650 0 99 66.00000 1.49650 97.7% - 0s 0 0 1.49650 0 99 66.00000 1.49650 97.7% - 0s H 0 0 63.0000000 1.49650 97.6% - 0s H 0 0 58.0000000 1.49650 97.4% - 0s 0 2 1.50289 0 99 58.00000 1.50289 97.4% - 0s * 42 42 22 48.0000000 4.95609 89.7% 40.8 0s * 229 168 31 47.0000000 7.23189 84.6% 33.9 0s H 602 403 44.0000000 12.09314 72.5% 32.9 1s H 1556 517 43.0000000 22.00000 48.8% 29.5 2s H 2329 679 42.0000000 24.41176 41.9% 27.5 3s H 2384 664 41.0000000 24.42424 40.4% 27.4 3s 4067 990 35.67470 20 151 41.00000 27.07692 34.0% 24.9 5s 9693 1356 cutoff 24 41.00000 31.47368 23.2% 22.0 10s 16350 987 38.00000 22 148 41.00000 34.15584 16.7% 20.9 15s Explored 20758 nodes (420521 simplex iterations) in 18.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.100000000000e+01, best bound 4.100000000000e+01, gap 0.0%