Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:22:51 2013 Optimize a model with 2380 rows, 84673 columns and 5058392 nonzeros Presolve removed 37 rows and 246 columns (presolve time = 6s) ... Presolve removed 68 rows and 770 columns (presolve time = 11s) ... Presolve removed 68 rows and 771 columns (presolve time = 16s) ... Presolve removed 68 rows and 771 columns Presolve time: 16.50s Presolved: 2312 rows, 83902 columns, 5010423 nonzeros Variable types: 0 continuous, 83902 integer (83902 binary) Found heuristic solution: objective 43667.000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7383 3.2517019e+04 1.851802e+03 0.000000e+00 5s 11233 3.3190234e+04 3.148800e+02 0.000000e+00 10s 14313 3.3458143e+04 5.159198e+02 0.000000e+00 15s 16469 3.3529867e+04 6.594466e+02 0.000000e+00 20s 18779 3.3574113e+04 1.942456e+03 0.000000e+00 25s 20627 3.3591707e+04 3.448220e+02 0.000000e+00 30s 22321 3.3601942e+04 1.520623e+03 0.000000e+00 35s 22722 3.3602000e+04 0.000000e+00 0.000000e+00 38s Root relaxation: objective 3.360200e+04, 22722 iterations, 37.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 33602.000000 33602.0000 0.0% - 54s Explored 0 nodes (22722 simplex iterations) in 55.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.360199999995e+04, best bound 3.360199999995e+04, gap 0.0%