Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:14:22 2013 Optimize a model with 91963 rows, 6724 columns and 279046 nonzeros Presolve removed 4391 rows and 3372 columns Presolve time: 0.78s Presolved: 87572 rows, 3352 columns, 266192 nonzeros Variable types: 44 continuous, 3308 integer (3308 binary) Found heuristic solution: objective 160801.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 32292 9.9752778e+04 0.000000e+00 1.538678e+09 5s 59301 1.0886471e+05 0.000000e+00 0.000000e+00 8s 59301 1.0886471e+05 0.000000e+00 0.000000e+00 8s Root relaxation: objective 1.088647e+05, 59301 iterations, 8.32 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 108864.715 0 18 160801.000 108864.715 32.3% - 9s H 0 0 108900.00000 108864.715 0.03% - 9s H 0 0 108889.00000 108864.715 0.02% - 9s H 0 0 108880.00000 108864.715 0.01% - 9s 0 0 108866.235 0 19 108880.000 108866.235 0.01% - 10s 0 0 108866.235 0 20 108880.000 108866.235 0.01% - 11s H 0 0 108878.00000 108866.235 0.01% - 11s 0 0 108866.235 0 26 108878.000 108866.235 0.01% - 11s 0 2 108866.235 0 26 108878.000 108866.235 0.01% - 11s H 4 3 108877.00000 108866.235 0.01% 9.2 12s Cutting planes: Gomory: 1 Implied bound: 1 MIR: 4 Zero half: 1 Explored 4 nodes (73363 simplex iterations) in 12.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.088770000000e+05, best bound 1.088670000000e+05, gap 0.0092%