Build (method = -2) #dp: 2214 Step-3' Graph: 65 vertices and 648 arcs (0.01s) Step-4' Graph: 48 vertices and 614 arcs (0.01s) #V4/#V3 = 0.74 #A4/#A3 = 0.95 Ready! (0.01s) Optimize a model with 110 rows, 615 columns and 1753 nonzeros Presolve removed 47 rows and 71 columns Presolve time: 0.02s Presolved: 63 rows, 544 columns, 1559 nonzeros Variable types: 0 continuous, 544 integer (318 binary) Found heuristic solution: objective 83.0000000 Found heuristic solution: objective 74.0000000 Optimize a model with 63 rows, 544 columns and 1559 nonzeros Presolved: 63 rows, 544 columns, 1559 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.880e+02 Factor NZ : 1.436e+03 Factor Ops : 4.090e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.65563933e+02 -1.45800472e+03 2.52e+03 2.79e-01 9.19e+00 0s 1 2.37686336e+02 -4.91499691e+02 4.98e+02 4.44e-16 1.97e+00 0s 2 8.92743510e+01 -1.22192903e+02 3.54e+01 4.44e-16 2.63e-01 0s 3 6.64706511e+01 2.12782237e+01 5.37e+00 4.44e-16 4.72e-02 0s 4 5.85062624e+01 3.64695095e+01 1.04e+00 3.33e-16 2.08e-02 0s 5 5.52282772e+01 4.53489869e+01 3.78e-01 4.44e-16 9.17e-03 0s 6 5.41407253e+01 4.97863698e+01 1.87e-01 2.76e-16 4.03e-03 0s 7 5.37232401e+01 5.08967807e+01 1.21e-01 2.22e-16 2.61e-03 0s 8 5.30760868e+01 5.28408466e+01 1.12e-03 4.44e-16 2.14e-04 0s 9 5.30005798e+01 5.29983298e+01 1.23e-05 2.22e-16 2.05e-06 0s 10 5.30000006e+01 5.29999983e+01 8.13e-14 6.66e-16 2.05e-09 0s 11 5.30000000e+01 5.30000000e+01 9.88e-14 3.33e-16 2.11e-15 0s Barrier solved model in 11 iterations and 0.00 seconds Optimal objective 5.30000000e+01 Root relaxation: objective 5.300000e+01, 171 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 53.0000000 53.00000 0.0% - 0s Explored 0 nodes (171 simplex iterations) in 0.03 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.300000000000e+01, best bound 5.300000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.03 seconds Total run time: 0.04 seconds Objective: 53 Solution: 1 x [62] 1 x [61] 1 x [1, 61] 3 x [60] 2 x [2, 59] 1 x [4, 58] 2 x [57] 1 x [5, 57] 1 x [5, 56] 1 x [7, 55] 1 x [8, 54] 2 x [6, 53] 1 x [9, 52] 1 x [4, 51] 1 x [3, 50] 1 x [10, 49] 1 x [11, 48] 1 x [12, 47] 1 x [12, 46] 1 x [15, 45] 2 x [14, 45] 1 x [16, 44] 1 x [13, 43] 3 x [17, 42] 1 x [19, 41] 1 x [18, 41] 1 x [20, 40] 1 x [20, 39] 1 x [21, 38] 2 x [23, 37] 1 x [20, 36] 2 x [25, 35] 3 x [22, 34] 1 x [29, 33] 2 x [24, 32] 1 x [28, 31] 1 x [26, 31] 1 x [25, 30] 1 x [25, 27] 1 x [12, 12, 15]