Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:23:51 2012 Optimize a model with 29240 rows, 29412 columns and 116278 nonzeros Presolve removed 713 rows and 4619 columns Presolve time: 0.73s Presolved: 28527 rows, 24793 columns, 109617 nonzeros Variable types: 0 continuous, 24793 integer (24793 binary) Found heuristic solution: objective 171.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 23889 3.0000673e+00 1.954623e+00 0.000000e+00 5s 24874 3.0000000e+00 0.000000e+00 0.000000e+00 6s Root relaxation: objective 3.000000e+00, 24874 iterations, 5.61 seconds Total elapsed time = 18.43s Total elapsed time = 20.51s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 204 171.00000 3.00000 98.2% - 20s H 0 0 3.0000000 3.00000 0.0% - 20s Explored 0 nodes (70917 simplex iterations) in 20.93 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%