Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:28:48 2014 Optimize a model with 3082 rows, 1561 columns and 7605 nonzeros Presolve removed 39 rows and 0 columns Presolve time: 0.12s Presolved: 3043 rows, 1561 columns, 7566 nonzeros Variable types: 1 continuous, 1560 integer (1560 binary) Found heuristic solution: objective 1.0144347 Found heuristic solution: objective 0.8522032 Found heuristic solution: objective 0.8252999 Root relaxation: objective 1.003733e-02, 2138 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.01004 0 1379 0.82530 0.01004 98.8% - 0s H 0 0 0.5149163 0.01004 98.1% - 0s 0 0 0.01674 0 762 0.51492 0.01674 96.7% - 0s 0 0 0.13474 0 315 0.51492 0.13474 73.8% - 0s H 0 0 0.5102594 0.13474 73.6% - 0s 0 0 0.14160 0 294 0.51026 0.14160 72.3% - 0s H 0 0 0.4765071 0.14160 70.3% - 0s 0 0 0.15667 0 309 0.47651 0.15667 67.1% - 0s 0 0 0.16032 0 285 0.47651 0.16032 66.4% - 0s H 0 0 0.4453126 0.16032 64.0% - 0s 0 0 0.19091 0 430 0.44531 0.19091 57.1% - 0s H 0 0 0.4210926 0.19091 54.7% - 0s 0 0 0.19285 0 338 0.42109 0.19285 54.2% - 1s H 0 0 0.4202587 0.19285 54.1% - 1s H 0 0 0.3537163 0.19285 45.5% - 1s 0 2 0.21450 0 204 0.35372 0.21450 39.4% - 1s * 14 14 9 0.3364077 0.21884 34.9% 214 1s * 19 8 2 0.3270321 0.24712 24.4% 171 1s * 23 6 4 0.3218430 0.26105 18.9% 146 1s * 26 4 5 0.3070525 0.26105 15.0% 130 1s H 30 0 0.3060868 0.26806 12.4% 113 1s Cutting planes: Gomory: 2 Explored 31 nodes (14542 simplex iterations) in 1.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.060868388445e-01, best bound 3.060868388445e-01, gap 0.0%