Gurobi 5.0.1 (linux64) logging started Mon Feb 4 20:13:32 2013 Optimize a model with 562625 rows, 22500 columns and 1698750 nonzeros Presolve removed 21641 rows and 11337 columns (presolve time = 5s) ... Presolve removed 23673 rows and 11341 columns Presolve time: 8.37s Presolved: 538952 rows, 11159 columns, 1626993 nonzeros Variable types: 69 continuous, 11090 integer (11090 binary) Found heuristic solution: objective 496853.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8576 2.9928631e+05 0.000000e+00 9.395759e+09 5s 18224 3.0558531e+05 0.000000e+00 2.613224e+08 10s 28944 3.0868768e+05 0.000000e+00 5.622192e+08 15s 38592 3.1077926e+05 0.000000e+00 3.344199e+08 20s 52591 3.1895109e+05 0.000000e+00 7.735245e+09 25s 67605 3.2406670e+05 0.000000e+00 4.752755e+08 30s 84757 3.3245437e+05 0.000000e+00 4.388101e+08 35s 102981 3.4061061e+05 0.000000e+00 1.387021e+08 40s 121205 3.5067404e+05 0.000000e+00 2.365738e+07 45s 135148 3.5770714e+05 0.000000e+00 3.781115e+06 50s 138653 3.5894664e+05 0.000000e+00 0.000000e+00 54s 138653 3.5894664e+05 0.000000e+00 0.000000e+00 54s Root relaxation: objective 3.589466e+05, 138653 iterations, 53.96 seconds Total elapsed time = 65.31s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 358946.643 0 21 496853.000 358946.643 27.8% - 66s H 0 0 358970.00000 358946.643 0.01% - 66s Explored 0 nodes (139449 simplex iterations) in 66.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.589700000000e+05, best bound 3.589470000000e+05, gap 0.0064%