Build (method = -2) #dp: 665 Step-3' Graph: 172 vertices and 509 arcs (0.00s) Step-4' Graph: 37 vertices and 239 arcs (0.01s) #V4/#V3 = 0.22 #A4/#A3 = 0.47 Ready! (0.01s) Optimize a model with 77 rows, 240 columns and 650 nonzeros Presolve removed 27 rows and 35 columns Presolve time: 0.00s Presolved: 50 rows, 205 columns, 556 nonzeros Variable types: 0 continuous, 205 integer (23 binary) Found heuristic solution: objective 339.0000000 Found heuristic solution: objective 299.0000000 Optimize a model with 50 rows, 205 columns and 556 nonzeros Presolved: 50 rows, 205 columns, 556 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.790e+02 Factor NZ : 7.570e+02 Factor Ops : 1.375e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.28900660e+03 -3.84364627e+03 8.27e+03 1.14e-01 1.22e+02 0s 1 9.64513351e+02 -1.72285834e+03 1.08e+03 5.55e-16 1.84e+01 0s 2 3.66283706e+02 -3.89469167e+02 4.14e+01 1.78e-15 2.10e+00 0s 3 2.90625914e+02 6.33754443e+01 3.22e+00 9.99e-16 5.46e-01 0s 4 2.48793287e+02 1.70725240e+02 1.92e-01 3.89e-16 1.84e-01 0s 5 2.38460414e+02 2.09230374e+02 5.91e-02 3.05e-16 6.89e-02 0s 6 2.35405052e+02 2.34112559e+02 9.18e-03 6.66e-16 3.06e-03 0s 7 2.35000123e+02 2.34999658e+02 3.72e-06 5.24e-16 1.10e-06 0s 8 2.35000000e+02 2.35000000e+02 6.39e-14 5.55e-16 1.10e-09 0s 9 2.35000000e+02 2.35000000e+02 1.13e-13 3.33e-16 1.40e-15 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.35000000e+02 Root relaxation: objective 2.350000e+02, 90 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 235.0000000 235.00000 0.0% - 0s Explored 0 nodes (90 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.350000000000e+02, best bound 2.350000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 235 Solution: 13 x [1] 7 x [2, 40] 13 x [3, 39] 1 x [4, 37] 8 x [4, 38] 2 x [4, 39] 4 x [5] 5 x [5, 36] 1 x [5, 40] 18 x [6] 16 x [7] 7 x [8, 35] 5 x [9, 35] 2 x [10, 33] 14 x [11, 29] 16 x [12, 28] 3 x [13] 7 x [13, 30] 2 x [14] 7 x [14, 34] 11 x [15, 27] 3 x [15, 33] 1 x [16] 10 x [16, 32] 1 x [16, 33] 8 x [17] 2 x [17, 29] 3 x [18, 33] 10 x [19, 26] 4 x [19, 31] 1 x [19, 33] 6 x [20, 25] 5 x [21] 6 x [21, 24] 1 x [21, 40] 1 x [22, 23] 4 x [22, 25] 7 x [22, 40]