Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:21:30 2012 Optimize a model with 533 rows, 480 columns and 1810 nonzeros Presolve removed 0 rows and 13 columns Presolve time: 0.00s Presolved: 533 rows, 467 columns, 1797 nonzeros Variable types: 0 continuous, 467 integer (466 binary) Found heuristic solution: objective 105.0000000 Root relaxation: objective 0.000000e+00, 290 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 0 196 105.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s 0 0 0.36722 0 198 73.00000 0.36722 99.5% - 0s H 0 0 67.0000000 0.36722 99.5% - 0s 0 0 0.82182 0 202 67.00000 0.82182 98.8% - 0s H 0 0 60.0000000 0.82182 98.6% - 0s 0 0 0.82185 0 204 60.00000 0.82185 98.6% - 0s 0 0 0.82185 0 204 60.00000 0.82185 98.6% - 0s H 0 0 58.0000000 0.82185 98.6% - 0s 0 2 0.82214 0 204 58.00000 0.82214 98.6% - 0s H 27 27 50.0000000 1.00000 98.0% 38.0 0s * 47 39 25 21.0000000 1.00000 95.2% 32.8 0s * 136 84 19 20.0000000 2.82099 85.9% 35.4 0s H 201 105 18.0000000 4.75301 73.6% 35.2 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 1210 nodes (38505 simplex iterations) in 1.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%