Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:15:10 2012 Optimize a model with 513 rows, 483 columns and 1763 nonzeros Presolve removed 0 rows and 16 columns Presolve time: 0.00s Presolved: 513 rows, 467 columns, 1747 nonzeros Variable types: 0 continuous, 467 integer (466 binary) Found heuristic solution: objective 101.0000000 Root relaxation: objective 0.000000e+00, 282 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 0 205 101.00000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s 0 0 0.30414 0 207 71.00000 0.30414 100% - 0s H 0 0 60.0000000 0.30414 99.5% - 0s 0 0 0.77619 0 210 60.00000 0.77619 98.7% - 0s H 0 0 55.0000000 0.77619 98.6% - 0s 0 0 0.77622 0 211 55.00000 0.77622 98.6% - 0s 0 0 0.77622 0 211 55.00000 0.77622 98.6% - 0s H 0 0 54.0000000 0.77622 98.6% - 0s H 0 0 52.0000000 0.77622 98.5% - 0s H 0 0 50.0000000 0.77622 98.4% - 0s H 0 0 49.0000000 0.77622 98.4% - 0s 0 2 0.77756 0 209 49.00000 0.77756 98.4% - 0s H 27 27 42.0000000 1.00000 97.6% 38.7 0s H 32 32 33.0000000 1.00000 97.0% 36.3 0s * 51 51 35 21.0000000 1.00000 95.2% 33.1 0s * 112 92 34 19.0000000 1.00000 94.7% 25.9 0s * 121 73 41 18.0000000 1.00000 94.4% 26.1 0s * 201 99 25 17.0000000 1.00000 94.1% 28.5 0s * 228 108 20 16.0000000 1.00000 93.8% 29.7 0s Explored 3067 nodes (100880 simplex iterations) in 4.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%