Build (method = -2) #dp: 3310 Step-3' Graph: 154 vertices and 454 arcs (0.02s) Step-4' Graph: 21 vertices and 188 arcs (0.02s) #V4/#V3 = 0.14 #A4/#A3 = 0.41 Ready! (0.02s) Optimize a model with 67 rows, 189 columns and 530 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 65 rows, 187 columns, 526 nonzeros Variable types: 0 continuous, 187 integer (42 binary) Found heuristic solution: objective 82.0000000 Optimize a model with 65 rows, 187 columns and 526 nonzeros Presolved: 65 rows, 187 columns, 526 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.050e+02 Factor NZ : 6.760e+02 Factor Ops : 1.211e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.42842944e+02 -3.71562362e+02 7.68e+01 3.86e-02 4.08e+00 0s 1 7.89691849e+01 -1.31700827e+02 3.55e-13 3.33e-16 5.35e-01 0s 2 3.97844823e+01 1.68632131e+01 8.17e-14 2.22e-16 5.69e-02 0s 3 3.33930565e+01 3.30463294e+01 4.69e-14 2.22e-16 8.54e-04 0s 4 3.33333932e+01 3.33330465e+01 2.51e-14 3.18e-16 8.54e-07 0s 5 3.33333333e+01 3.33333333e+01 6.11e-14 1.11e-16 8.54e-13 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 3.33333333e+01 Root relaxation: objective 3.333333e+01, 128 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 33.33333 0 3 82.00000 33.33333 59.3% - 0s H 0 0 34.0000000 33.33333 1.96% - 0s Explored 0 nodes (157 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 34 Solution: 2 x [29, 33, 46] 1 x [23, 30, 45] 3 x [15, 27, 44] 1 x [22, 35, 43] 1 x [11, 25, 42] 1 x [2, 8, 42] 1 x [32, 41, 41] 3 x [4, 34, 40] 1 x [20, 20, 39] 1 x [24, 24, 38] 1 x [21, 31, 37] 1 x [2, 9, 37] 4 x [25, 26, 36] 1 x [2, 14, 35] 3 x [10, 17, 28] 1 x [2, 16, 23] 2 x [1, 5, 19] 2 x [7, 9, 18] 2 x [6, 9, 13] 1 x [12, 12] 1 x [3, 4]