
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 08:15:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9940.39.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo9940.39.lp
Reading time = 0.13 seconds
: 76469 rows, 2148 columns, 231237 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 76469 rows, 2148 columns and 231237 nonzeros
Model fingerprint: 0x801f4f5f
Variable types: 45 continuous, 2103 integer (2103 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective 7.0000000
Presolve removed 17378 rows and 66 columns
Presolve time: 0.56s
Presolved: 59091 rows, 2082 columns, 179562 nonzeros
Variable types: 0 continuous, 2082 integer (2037 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2082 rows, 61173 columns, 181644 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25258    4.6746875e+01   0.000000e+00   6.389894e+03      5s
   38929    4.7000000e+01   0.000000e+00   0.000000e+00      8s
   38929    4.7000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.700000e+01, 38929 iterations, 6.94 seconds (5.96 work units)
Total elapsed time = 15.08s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   47.00000    0  323    8.00000   47.00000   488%     -   15s
     0     0   47.00000    0  653    8.00000   47.00000   488%     -   23s
H    0     0                      10.0000000   47.00000   370%     -   23s
H    0     0                      11.0000000   47.00000   327%     -   23s
     0     0   47.00000    0  616   11.00000   47.00000   327%     -   24s
     0     0   47.00000    0  391   11.00000   47.00000   327%     -   42s
H    0     0                      12.0000000   47.00000   292%     -   42s
     0     0   47.00000    0  451   12.00000   47.00000   292%     -   43s
     0     0   47.00000    0  575   12.00000   47.00000   292%     -   50s

Cutting planes:
  Gomory: 3
  Cover: 32
  Clique: 8
  MIR: 179
  StrongCG: 4
  GUB cover: 4
  Zero half: 46
  RLT: 71
  BQP: 2

Explored 1 nodes (75586 simplex iterations) in 50.05 seconds (43.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 12 11 10 ... 7

Time limit reached
Best objective 1.200000000000e+01, best bound 4.700000000000e+01, gap 291.6667%

Wrote result file './lp_solutions/grafo9940.39.sol'

