Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:52:17 2012 Optimize a model with 505 rows, 475 columns and 1735 nonzeros Presolve removed 0 rows and 18 columns Presolve time: 0.00s Presolved: 505 rows, 457 columns, 1717 nonzeros Variable types: 0 continuous, 457 integer (456 binary) Found heuristic solution: objective 94.0000000 Root relaxation: objective 0.000000e+00, 296 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 0 188 94.00000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s 0 0 0.31769 0 190 56.00000 0.31769 99.4% - 0s H 0 0 48.0000000 0.31769 99.3% - 0s 0 0 0.85881 0 194 48.00000 0.85881 98.2% - 0s H 0 0 46.0000000 0.85881 98.1% - 0s 0 0 0.85881 0 194 46.00000 0.85881 98.1% - 0s 0 0 0.85881 0 194 46.00000 0.85881 98.1% - 0s H 0 0 43.0000000 0.85881 98.0% - 0s H 0 0 41.0000000 0.85881 97.9% - 0s 0 2 0.86043 0 194 41.00000 0.86043 97.9% - 0s H 54 54 23.0000000 1.00000 95.7% 33.6 0s * 65 48 46 21.0000000 1.00000 95.2% 29.7 0s H 182 93 18.0000000 1.00000 94.4% 29.5 0s * 757 239 33 17.0000000 7.52809 55.7% 37.7 2s Cutting planes: Gomory: 10 Explored 1263 nodes (39340 simplex iterations) in 2.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%