Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:24:22 2012 Optimize a model with 54092 rows, 48180 columns and 209362 nonzeros Presolve removed 464 rows and 5258 columns Presolve time: 1.39s Presolved: 53628 rows, 42922 columns, 202521 nonzeros Variable types: 0 continuous, 42922 integer (42922 binary) Found heuristic solution: objective 219.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 28753 3.0000797e+00 1.447297e+01 0.000000e+00 5s 33073 3.0000834e+00 1.917459e+02 0.000000e+00 10s 37258 3.0000887e+00 2.427892e+01 0.000000e+00 15s 39444 3.0000000e+00 0.000000e+00 0.000000e+00 17s Root relaxation: objective 3.000000e+00, 39444 iterations, 17.31 seconds Total elapsed time = 35.72s Total elapsed time = 40.43s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 42s Explored 0 nodes (95204 simplex iterations) in 42.92 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%