Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:54:10 2013 Optimize a model with 341 rows, 9641 columns and 19251 nonzeros Presolve time: 0.01s Presolved: 341 rows, 9641 columns, 19251 nonzeros Variable types: 9610 continuous, 31 integer (31 binary) Root relaxation: objective 2.633567e+04, 305 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 26335.6733 0 6 - 26335.6733 - - 0s H 0 0 26802.000000 26335.6733 1.74% - 0s H 0 0 26639.000000 26335.6733 1.14% - 0s 0 0 26492.1883 0 4 26639.0000 26492.1883 0.55% - 0s 0 0 26510.6189 0 3 26639.0000 26510.6189 0.48% - 0s 0 0 26512.1647 0 3 26639.0000 26512.1647 0.48% - 0s 0 0 26512.4000 0 2 26639.0000 26512.4000 0.48% - 0s 0 0 26522.7333 0 2 26639.0000 26522.7333 0.44% - 0s 0 0 26552.8583 0 2 26639.0000 26552.8583 0.32% - 0s 0 2 26554.7333 0 2 26639.0000 26554.7333 0.32% - 0s Cutting planes: Implied bound: 34 Flow cover: 6 Explored 8 nodes (596 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.663900000000e+04, best bound 2.663900000000e+04, gap 0.0%