Gurobi 5.0.1 (linux64) logging started Mon Feb 4 20:19:25 2013 Optimize a model with 562625 rows, 22500 columns and 1698750 nonzeros Presolve removed 20631 rows and 11338 columns (presolve time = 5s) ... Presolve removed 29439 rows and 11393 columns Presolve time: 9.07s Presolved: 533186 rows, 11107 columns, 1608082 nonzeros Variable types: 58 continuous, 11049 integer (11049 binary) Found heuristic solution: objective 504123.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8576 3.3653031e+05 0.000000e+00 1.327029e+09 5s 21440 3.4170756e+05 0.000000e+00 6.873653e+07 10s 37527 3.4948339e+05 0.000000e+00 4.242014e+07 15s 54679 3.5687825e+05 0.000000e+00 2.010687e+07 20s 72903 3.6558449e+05 0.000000e+00 7.593226e+06 25s 91127 3.7706645e+05 0.000000e+00 1.999608e+06 30s 95780 3.7823125e+05 0.000000e+00 0.000000e+00 34s 95780 3.7823125e+05 0.000000e+00 0.000000e+00 35s Root relaxation: objective 3.782312e+05, 95780 iterations, 34.50 seconds Total elapsed time = 45.74s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 378231.250 0 27 504123.000 378231.250 25.0% - 48s H 0 0 378260.00000 378231.250 0.01% - 48s Explored 0 nodes (97078 simplex iterations) in 48.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.782600000000e+05, best bound 3.782320000000e+05, gap 0.0074%