Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:49:10 2012 Optimize a model with 73439 rows, 57840 columns and 276958 nonzeros Presolve removed 498 rows and 4320 columns (presolve time = 5s) ... Presolve removed 500 rows and 4322 columns Presolve time: 6.28s Presolved: 72939 rows, 53518 columns, 270830 nonzeros Variable types: 0 continuous, 53518 integer (53518 binary) Found heuristic solution: objective 240.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 34275 3.0000901e+00 3.580000e+01 0.000000e+00 5s 38305 3.0000941e+00 1.062640e+02 0.000000e+00 10s 41250 3.0000958e+00 4.695338e+01 0.000000e+00 15s 44040 3.0000976e+00 1.375764e+01 0.000000e+00 20s 47140 3.0001006e+00 1.409120e+01 0.000000e+00 25s 50240 3.0001043e+00 3.055807e+01 0.000000e+00 30s 53340 3.0001078e+00 1.883028e+01 0.000000e+00 35s 56440 3.0001124e+00 1.478449e+01 0.000000e+00 40s 59075 3.0001158e+00 9.064875e+00 0.000000e+00 45s 61865 3.0001178e+00 1.068969e+01 0.000000e+00 50s 63000 3.0000000e+00 0.000000e+00 0.000000e+00 53s Root relaxation: objective 3.000000e+00, 63000 iterations, 52.57 seconds Total elapsed time = 106.16s Total elapsed time = 114.30s Total elapsed time = 118.18s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 119s Explored 0 nodes (185199 simplex iterations) in 119.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%