Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:43:27 2013 Optimize a model with 161799 rows, 9801 columns and 490050 nonzeros Presolve removed 7288 rows and 4924 columns Presolve time: 1.93s Presolved: 154511 rows, 4877 columns, 468424 nonzeros Variable types: 51 continuous, 4826 integer (4826 binary) Found heuristic solution: objective 196587.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27607 1.2009831e+05 0.000000e+00 8.005842e+07 5s 45646 1.3531693e+05 0.000000e+00 0.000000e+00 8s 45646 1.3531693e+05 0.000000e+00 0.000000e+00 8s Root relaxation: objective 1.353169e+05, 45646 iterations, 8.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 135316.933 0 13 196587.000 135316.933 31.2% - 10s H 0 0 135336.00000 135316.933 0.01% - 11s H 0 0 135331.00000 135316.933 0.01% - 11s H 0 0 135329.00000 135316.933 0.01% - 11s Explored 0 nodes (45931 simplex iterations) in 11.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.353290000000e+05, best bound 1.353170000000e+05, gap 0.0089%