Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:52:36 2012 Optimize a model with 493 rows, 469 columns and 1699 nonzeros Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 493 rows, 438 columns, 1668 nonzeros Variable types: 0 continuous, 438 integer (437 binary) Found heuristic solution: objective 83.0000000 Root relaxation: objective 0.000000e+00, 299 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 0 183 83.00000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s 0 0 0.25121 0 185 68.00000 0.25121 100% - 0s H 0 0 65.0000000 0.25121 100% - 0s 0 0 0.90880 0 187 65.00000 0.90880 98.6% - 0s H 0 0 56.0000000 0.90880 98.4% - 0s 0 0 0.90886 0 190 56.00000 0.90886 98.4% - 0s 0 0 0.90886 0 190 56.00000 0.90886 98.4% - 0s H 0 0 47.0000000 0.90886 98.1% - 0s H 0 0 46.0000000 0.90886 98.0% - 0s H 0 0 40.0000000 0.90886 97.7% - 0s 0 2 0.91473 0 190 40.00000 0.91473 97.7% - 0s H 27 27 37.0000000 1.00000 97.3% 40.8 0s H 54 50 20.0000000 1.00000 95.0% 30.1 0s H 108 68 18.0000000 1.00000 94.4% 26.8 0s * 249 143 17 17.0000000 1.34746 92.1% 33.3 0s H 770 262 16.0000000 5.13793 67.9% 32.4 1s H 935 219 15.0000000 6.56818 56.2% 31.3 1s Explored 2099 nodes (58748 simplex iterations) in 3.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%