Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:36:49 2012 Optimize a model with 39359 rows, 37056 columns and 154174 nonzeros Presolve removed 413 rows and 5186 columns Presolve time: 1.02s Presolved: 38946 rows, 31870 columns, 147624 nonzeros Variable types: 0 continuous, 31870 integer (31870 binary) Found heuristic solution: objective 192.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 26278 3.0000728e+00 8.060641e+01 0.000000e+00 5s 32245 3.0000794e+00 2.055764e+01 0.000000e+00 10s 36133 3.0000000e+00 0.000000e+00 0.000000e+00 14s Root relaxation: objective 3.000000e+00, 36133 iterations, 13.83 seconds Total elapsed time = 33.51s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 92 192.00000 3.00000 98.4% - 35s H 0 0 3.0000000 3.00000 0.0% - 35s Explored 0 nodes (85865 simplex iterations) in 35.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%