Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:33:57 2013 Optimize a model with 142975 rows, 9025 columns and 433200 nonzeros Presolve removed 7880 rows and 4548 columns Presolve time: 1.61s Presolved: 135095 rows, 4477 columns, 409792 nonzeros Variable types: 49 continuous, 4428 integer (4428 binary) Found heuristic solution: objective 206110.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 29109 1.3046817e+05 0.000000e+00 1.351453e+07 5s 49620 1.4160954e+05 0.000000e+00 0.000000e+00 8s 49620 1.4160954e+05 0.000000e+00 0.000000e+00 8s Root relaxation: objective 1.416095e+05, 49620 iterations, 7.70 seconds Total elapsed time = 10.06s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 141609.536 0 20 206110.000 141609.536 31.3% - 10s H 0 0 141625.00000 141609.536 0.01% - 10s H 0 0 141623.00000 141609.536 0.01% - 10s Explored 0 nodes (49878 simplex iterations) in 10.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.416230000000e+05, best bound 1.416100000000e+05, gap 0.0092%