Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:41:17 2013 Optimize a model with 1472 rows, 46132 columns and 1836318 nonzeros Presolve removed 25 rows and 163 columns (presolve time = 5s) ... Presolve removed 25 rows and 163 columns Presolve time: 5.69s Presolved: 1447 rows, 45969 columns, 1829361 nonzeros Variable types: 0 continuous, 45969 integer (45969 binary) Found heuristic solution: objective 23589.000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 9572 1.4496726e+04 5.031466e+02 0.000000e+00 5s 13904 1.4604000e+04 3.199548e+02 0.000000e+00 10s 15030 1.4607625e+04 0.000000e+00 0.000000e+00 12s Root relaxation: objective 1.460762e+04, 15030 iterations, 12.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14607.6250 0 126 23589.0000 14607.6250 38.1% - 18s H 0 0 14759.000000 14607.6250 1.03% - 21s 0 0 14612.2000 0 164 14759.0000 14612.2000 0.99% - 24s H 0 0 14754.000000 14612.2000 0.96% - 36s 0 0 14612.2000 0 126 14754.0000 14612.2000 0.96% - 42s 0 0 14612.2941 0 160 14754.0000 14612.2941 0.96% - 44s H 0 0 14629.000000 14612.2941 0.11% - 45s * 0 0 0 14614.000000 14614.0000 0.0% - 46s Cutting planes: Clique: 19 Zero half: 41 Explored 0 nodes (28957 simplex iterations) in 46.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.461400000000e+04, best bound 1.461400000000e+04, gap 0.0%