
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:39:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5915.45.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/grafo5915.45.lp
Reading time = 0.13 seconds
: 82201 rows, 2249 columns, 248273 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 82201 rows, 2249 columns and 248273 nonzeros
Model fingerprint: 0x03cd9687
Variable types: 44 continuous, 2205 integer (2205 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 5.0000000
Presolve removed 16884 rows and 25 columns
Presolve time: 0.56s
Presolved: 65317 rows, 2224 columns, 198085 nonzeros
Variable types: 0 continuous, 2224 integer (2180 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2221 rows, 67538 columns, 200309 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26534    3.7944086e+01   0.000000e+00   1.326377e+04      5s
   49708    3.8000000e+01   0.000000e+00   0.000000e+00      9s
   49708    3.8000000e+01   0.000000e+00   0.000000e+00      9s
   49708    3.8000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 3.800000e+01, 49708 iterations, 8.81 seconds (7.43 work units)
Total elapsed time = 19.39s (DegenMoves)
Total elapsed time = 20.34s (DegenMoves)

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

     0     0   38.00000    0  571   10.00000   38.00000   280%     -   20s
     0     0   38.00000    0  763   10.00000   38.00000   280%     -   31s
     0     0   38.00000    0  652   10.00000   38.00000   280%     -   32s
     0     0   38.00000    0  750   10.00000   38.00000   280%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 30
  Cover: 14
  Clique: 7
  MIR: 97
  StrongCG: 1
  GUB cover: 2
  Zero half: 14
  RLT: 32

Explored 1 nodes (81823 simplex iterations) in 50.10 seconds (41.75 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 5 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.800000000000e+01, gap 280.0000%

Wrote result file './lp_solutions/grafo5915.45.sol'

