Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:06:17 2012 Optimize a model with 469 rows, 437 columns and 1607 nonzeros Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 469 rows, 416 columns, 1586 nonzeros Variable types: 0 continuous, 416 integer (415 binary) Found heuristic solution: objective 89.0000000 Root relaxation: objective 0.000000e+00, 267 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 0 179 89.00000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s 0 0 0.43575 0 180 58.00000 0.43575 99.2% - 0s H 0 0 57.0000000 0.43575 99.2% - 0s 0 0 1.00000 0 181 57.00000 1.00000 98.2% - 0s H 0 0 51.0000000 1.00000 98.0% - 0s H 0 0 47.0000000 1.00000 97.9% - 0s 0 0 1.05242 0 182 47.00000 1.05242 97.8% - 0s H 0 0 45.0000000 1.05242 97.7% - 0s 0 0 1.13813 0 186 45.00000 1.13813 97.5% - 0s H 0 0 41.0000000 1.13813 97.2% - 0s 0 0 1.13884 0 185 41.00000 1.13884 97.2% - 0s 0 0 1.13884 0 185 41.00000 1.13884 97.2% - 0s 0 2 1.14120 0 185 41.00000 1.14120 97.2% - 0s H 54 54 19.0000000 1.39403 92.7% 38.6 0s H 54 36 18.0000000 1.39403 92.3% 38.6 0s * 644 234 26 17.0000000 3.41521 79.9% 33.3 2s Cutting planes: Gomory: 8 Zero half: 1 Explored 1482 nodes (44692 simplex iterations) in 3.43 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%