Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:41:31 2012 Optimize a model with 42621 rows, 41006 columns and 167860 nonzeros Presolve removed 406 rows and 2 columns Presolve time: 1.11s Presolved: 42417 rows, 41004 columns, 207236 nonzeros Variable types: 0 continuous, 41004 integer (41004 binary) Found heuristic solution: objective 202.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 28960 3.0000773e+00 3.580000e+01 0.000000e+00 5s 34163 3.0000832e+00 2.025208e+01 0.000000e+00 10s 35638 3.0000000e+00 0.000000e+00 0.000000e+00 11s Root relaxation: objective 3.000000e+00, 35638 iterations, 11.43 seconds Total elapsed time = 29.23s Total elapsed time = 30.07s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 64 202.00000 3.00000 98.5% - 31s H 0 0 3.0000000 3.00000 0.0% - 31s Explored 0 nodes (92343 simplex iterations) in 31.71 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%