Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:11:41 2012 Optimize a model with 46208 rows, 44732 columns and 182302 nonzeros Presolve removed 1479 rows and 2 columns Presolve time: 1.19s Presolved: 44940 rows, 44730 columns, 222812 nonzeros Variable types: 0 continuous, 44730 integer (44730 binary) Found heuristic solution: objective 211.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 25639 3.0000758e+00 2.585714e+01 0.000000e+00 5s 28168 3.0000000e+00 0.000000e+00 0.000000e+00 8s Root relaxation: objective 3.000000e+00, 28168 iterations, 7.64 seconds Total elapsed time = 42.16s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 93 211.00000 3.00000 98.6% - 44s H 0 0 3.0000000 3.00000 0.0% - 44s Explored 0 nodes (87999 simplex iterations) in 44.41 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%