Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:41:07 2013 Optimize a model with 1365 rows, 32374 columns and 1562084 nonzeros Presolve removed 33 rows and 0 columns Presolve time: 1.42s Presolved: 1332 rows, 32374 columns, 1560170 nonzeros Variable types: 0 continuous, 32374 integer (32374 binary) Found heuristic solution: objective 17086.000000 Root relaxation: objective 1.128100e+04, 7642 iterations, 4.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11281.0000 0 36 17086.0000 11281.0000 34.0% - 7s H 0 0 11792.000000 11281.0000 4.33% - 8s 0 0 11281.0000 0 117 11792.0000 11281.0000 4.33% - 9s H 0 0 11494.000000 11281.0000 1.85% - 9s 0 0 11283.0000 0 42 11494.0000 11283.0000 1.84% - 12s H 0 0 11490.000000 11283.0000 1.80% - 20s 0 0 11283.0000 0 42 11490.0000 11283.0000 1.80% - 25s 0 0 11283.0000 0 79 11490.0000 11283.0000 1.80% - 26s 0 0 11284.0000 0 133 11490.0000 11284.0000 1.79% - 28s * 0 0 0 11286.000000 11286.0000 0.0% - 31s Cutting planes: Clique: 11 Zero half: 40 Explored 0 nodes (18358 simplex iterations) in 31.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.128600000000e+04, best bound 1.128600000000e+04, gap 0.0%