Build (method = -2) #dp: 223 Step-3' Graph: 22 vertices and 89 arcs (0.00s) Step-4' Graph: 16 vertices and 77 arcs (0.00s) #V4/#V3 = 0.73 #A4/#A3 = 0.87 Ready! (0.00s) Optimize a model with 36 rows, 78 columns and 208 nonzeros Presolve removed 16 rows and 23 columns Presolve time: 0.00s Presolved: 20 rows, 55 columns, 145 nonzeros Variable types: 0 continuous, 55 integer (0 binary) Found heuristic solution: objective 182.0000000 Found heuristic solution: objective 134.0000000 Optimize a model with 20 rows, 55 columns and 145 nonzeros Presolved: 20 rows, 55 columns, 145 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.600e+01 Factor NZ : 2.100e+02 Factor Ops : 2.870e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.74083659e+02 -7.95288283e+02 8.96e+02 2.22e-16 3.43e+01 0s 1 2.15844545e+02 -1.68713009e+02 5.41e+01 3.33e-16 4.17e+00 0s 2 1.50247251e+02 6.22781039e+01 7.94e-02 4.44e-16 7.46e-01 0s 3 1.27020199e+02 1.15380722e+02 2.55e-03 2.78e-16 9.86e-02 0s 4 1.23109401e+02 1.22861020e+02 1.66e-05 2.22e-16 2.10e-03 0s 5 1.23000013e+02 1.22999994e+02 2.00e-09 1.11e-16 1.58e-07 0s 6 1.23000000e+02 1.23000000e+02 4.26e-14 1.11e-16 1.58e-13 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.23000000e+02 Root relaxation: objective 1.230000e+02, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 123.0000000 123.00000 0.0% - 0s Explored 0 nodes (19 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.230000000000e+02, best bound 1.230000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 123 Solution: 4 x [1] 8 x [19] 1 x [7, 19] 7 x [9, 13] 7 x [7, 9] 13 x [12] 1 x [2, 14] 10 x [10, 14] 19 x [16] 13 x [3, 11] 1 x [2, 6] 2 x [15] 2 x [15, 20] 4 x [4, 15] 1 x [11, 15] 17 x [5, 17] 13 x [8, 18]