
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:07:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1419.47.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/grafo1419.47.lp
Reading time = 0.25 seconds
: 137766 rows, 2804 columns, 415809 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 137766 rows, 2804 columns and 415809 nonzeros
Model fingerprint: 0x6185f618
Variable types: 53 continuous, 2751 integer (2751 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]
Presolve removed 48740 rows and 71 columns
Presolve time: 0.95s
Presolved: 89026 rows, 2733 columns, 269980 nonzeros
Variable types: 0 continuous, 2733 integer (2680 binary)
Root relaxation presolved: 2730 rows, 91756 columns, 272713 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14446    3.4966327e+01   0.000000e+00   4.346743e+04      5s
   30682    3.4946880e+01   0.000000e+00   5.552209e+03     10s
   45334    3.4942440e+01   0.000000e+00   1.356617e+03     15s
   59611    3.4941564e+01   0.000000e+00   1.929042e+00     20s
   60021    3.5000000e+01   0.000000e+00   0.000000e+00     20s
   60021    3.5000000e+01   0.000000e+00   0.000000e+00     20s
   60021    3.5000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 3.500000e+01, 60021 iterations, 19.05 seconds (14.38 work units)
Total elapsed time = 33.12s (DegenMoves)

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

     0     0   35.00000    0  288          -   35.00000      -     -   33s
H    0     0                      10.0000000   35.00000   250%     -   35s
     0     0   35.00000    0  601   10.00000   35.00000   250%     -   41s
H    0     0                      12.0000000   35.00000   192%     -   42s
     0     0   35.00000    0  592   12.00000   35.00000   192%     -   43s
     0     0   35.00000    0  599   12.00000   35.00000   192%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 21
  Cover: 5
  Clique: 15
  MIR: 67
  StrongCG: 1
  GUB cover: 1
  Zero half: 28
  RLT: 30
  BQP: 5

Explored 1 nodes (77680 simplex iterations) in 50.06 seconds (38.61 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 10 

Time limit reached
Best objective 1.200000000000e+01, best bound 3.500000000000e+01, gap 191.6667%

Wrote result file './lp_solutions/grafo1419.47.sol'

