Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:10:17 2013 Optimize a model with 79157 rows, 6084 columns and 240318 nonzeros Presolve removed 4242 rows and 3056 columns Presolve time: 0.64s Presolved: 74915 rows, 3028 columns, 227820 nonzeros Variable types: 41 continuous, 2987 integer (2987 binary) Found heuristic solution: objective 137517.00000 Root relaxation: objective 9.629939e+04, 40136 iterations, 4.71 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 96299.3889 0 16 137517.000 96299.3889 30.0% - 5s H 0 0 96325.000000 96299.3889 0.03% - 5s H 0 0 96313.000000 96299.3889 0.01% - 5s 0 0 96300.0000 0 23 96313.0000 96300.0000 0.01% - 6s 0 0 96300.0000 0 23 96313.0000 96300.0000 0.01% - 7s 0 0 96300.0000 0 25 96313.0000 96300.0000 0.01% - 7s H 0 0 96311.000000 96300.0000 0.01% - 7s 0 2 96300.0000 0 16 96311.0000 96300.0000 0.01% - 7s 351 221 96306.5154 35 39 96311.0000 96300.0000 0.01% 61.7 10s H 470 238 96308.000000 96300.0000 0.01% 56.6 10s Cutting planes: Gomory: 6 Implied bound: 2 MIR: 53 Zero half: 21 Explored 470 nodes (74469 simplex iterations) in 10.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.630800000000e+04, best bound 9.630000000000e+04, gap 0.0083%