Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:42:01 2012 Optimize a model with 475 rows, 457 columns and 1642 nonzeros Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 475 rows, 429 columns, 1614 nonzeros Variable types: 0 continuous, 429 integer (428 binary) Found heuristic solution: objective 81.0000000 Root relaxation: objective 0.000000e+00, 252 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 81.00000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s 0 0 0.24678 0 185 54.00000 0.24678 100% - 0s H 0 0 43.0000000 0.24678 99.4% - 0s 0 0 0.86272 0 188 43.00000 0.86272 98.0% - 0s H 0 0 25.0000000 0.86272 96.5% - 0s 0 0 0.86322 0 190 25.00000 0.86322 96.5% - 0s 0 0 0.86322 0 190 25.00000 0.86322 96.5% - 0s 0 2 0.86460 0 189 25.00000 0.86460 96.5% - 0s H 35 26 12.0000000 1.01515 91.5% 30.0 0s Cutting planes: Gomory: 3 Zero half: 5 Explored 594 nodes (19028 simplex iterations) in 0.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%