Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:07:01 2012 Optimize a model with 529 rows, 490 columns and 1810 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 529 rows, 475 columns, 1795 nonzeros Variable types: 0 continuous, 475 integer (474 binary) Found heuristic solution: objective 99.0000000 Root relaxation: objective 0.000000e+00, 299 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 0 200 99.00000 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 72.0000000 0.00000 100% - 0s 0 0 0.28216 0 202 72.00000 0.28216 100% - 0s H 0 0 69.0000000 0.28216 100% - 0s 0 0 0.89943 0 204 69.00000 0.89943 98.7% - 0s H 0 0 64.0000000 0.89943 98.6% - 0s H 0 0 62.0000000 0.89943 98.5% - 0s 0 0 0.89968 0 205 62.00000 0.89968 98.5% - 0s 0 0 0.89968 0 205 62.00000 0.89968 98.5% - 0s H 0 0 59.0000000 0.89968 98.5% - 0s H 0 0 53.0000000 0.89968 98.3% - 0s 0 2 0.90011 0 204 53.00000 0.90011 98.3% - 0s * 24 24 14 17.0000000 1.00000 94.1% 42.8 0s H 44 26 15.0000000 2.25210 85.0% 39.7 0s Cutting planes: Gomory: 3 Zero half: 2 Explored 275 nodes (11594 simplex iterations) in 0.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%