Build (method = -2) #dp: 6605 Step-3' Graph: 193 vertices and 2358 arcs (0.03s) Step-4' Graph: 99 vertices and 2170 arcs (0.03s) #V4/#V3 = 0.51 #A4/#A3 = 0.92 Ready! (0.03s) Optimize a model with 191 rows, 2171 columns and 6321 nonzeros Presolve removed 6 rows and 12 columns Presolve time: 0.03s Presolved: 185 rows, 2159 columns, 5782 nonzeros Variable types: 0 continuous, 2159 integer (1715 binary) Found heuristic solution: objective 92.0000000 Optimize a model with 185 rows, 2159 columns and 5782 nonzeros Presolved: 185 rows, 2159 columns, 5782 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.158e+03 Factor NZ : 6.825e+03 Factor Ops : 3.680e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.62800810e+03 -1.16379598e+04 1.69e+04 2.90e-01 1.69e+01 0s 1 8.57142324e+02 -2.18417598e+03 2.15e+03 4.44e-16 2.24e+00 0s 2 1.76465512e+02 -3.76662076e+02 2.16e+02 4.44e-16 2.68e-01 0s 3 6.77971912e+01 -2.28225266e+01 2.20e+01 4.44e-16 3.32e-02 0s 4 5.25951165e+01 1.01944586e+01 5.86e+00 2.22e-16 1.22e-02 0s 5 4.67092851e+01 2.96330911e+01 2.45e+00 3.33e-16 4.56e-03 0s 6 4.33662437e+01 3.53917582e+01 9.64e-01 2.22e-16 2.03e-03 0s 7 4.14726259e+01 3.85789184e+01 3.60e-01 2.24e-16 7.26e-04 0s 8 4.04469933e+01 3.96131136e+01 8.70e-02 2.22e-16 2.06e-04 0s 9 4.01816248e+01 3.98374467e+01 3.15e-02 2.22e-16 8.41e-05 0s 10 4.00305734e+01 3.99507065e+01 3.34e-03 2.22e-16 1.89e-05 0s 11 4.00110270e+01 3.99915052e+01 1.06e-03 2.22e-16 4.65e-06 0s 12 4.00002516e+01 3.99996252e+01 4.28e-06 2.59e-16 1.45e-07 0s 13 4.00000000e+01 4.00000000e+01 7.25e-10 2.66e-16 1.38e-11 0s Barrier solved model in 13 iterations and 0.02 seconds Optimal objective 4.00000000e+01 Root relaxation: objective 4.000000e+01, 345 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.00000 0 80 92.00000 40.00000 56.5% - 0s H 0 0 42.0000000 40.00000 4.76% - 0s H 0 0 41.0000000 40.00000 2.44% - 0s * 0 0 0 40.0000000 40.00000 0.0% - 0s Cutting planes: Gomory: 2 MIR: 3 Zero half: 10 Explored 0 nodes (1265 simplex iterations) in 0.24 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0% Preprocessing time: 0.04 seconds Gurobi run time: 0.24 seconds Total run time: 0.28 seconds Objective: 40 Solution: 1 x [1, 2, 92] 1 x [2, 3, 91] 1 x [2, 9, 90] 1 x [5, 9, 89] 2 x [1, 16, 88] 1 x [3, 15, 87] 1 x [7, 14, 86] 1 x [6, 15, 85] 1 x [4, 23, 84] 1 x [12, 20, 83] 1 x [16, 19, 82] 1 x [8, 27, 81] 1 x [11, 26, 80] 1 x [2, 33, 79] 1 x [22, 24, 78] 1 x [17, 31, 77] 1 x [7, 35, 76] 1 x [25, 32, 75] 1 x [18, 35, 74] 1 x [21, 34, 73] 1 x [21, 35, 72] 1 x [30, 33, 71] 1 x [12, 42, 70] 1 x [17, 41, 69] 1 x [19, 43, 68] 1 x [33, 36, 67] 1 x [14, 48, 66] 1 x [13, 51, 65] 1 x [15, 50, 64] 1 x [5, 53, 63] 1 x [27, 47, 63] 1 x [10, 53, 62] 1 x [29, 49, 61] 1 x [38, 40, 60] 1 x [18, 55, 59] 1 x [28, 53, 58] 1 x [39, 46, 57] 1 x [37, 52, 56] 1 x [44, 45, 54]