
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:46:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5552.47.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/grafo5552.47.lp
Reading time = 0.17 seconds
: 102115 rows, 2640 columns, 308427 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 102115 rows, 2640 columns and 308427 nonzeros
Model fingerprint: 0x6b6423a4
Variable types: 49 continuous, 2591 integer (2591 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 2.0000000
Presolve removed 18808 rows and 0 columns
Presolve time: 0.66s
Presolved: 83307 rows, 2640 columns, 252511 nonzeros
Variable types: 0 continuous, 2640 integer (2591 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2619 rows, 85926 columns, 255151 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19750    4.3724090e+01   0.000000e+00   3.351711e+04      5s
   37075    4.3696390e+01   0.000000e+00   1.031754e+04     10s
   53642    4.3693219e+01   0.000000e+00   1.654013e+02     15s
   55877    4.4000000e+01   0.000000e+00   0.000000e+00     16s
   55877    4.4000000e+01   0.000000e+00   0.000000e+00     16s
   55877    4.4000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.400000e+01, 55877 iterations, 15.12 seconds (9.49 work units)
Total elapsed time = 34.96s (DegenMoves)
Total elapsed time = 39.65s (DegenMoves)
Total elapsed time = 45.97s (DegenMoves)

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

     0     0   44.00000    0  673    8.00000   44.00000   450%     -   50s

Explored 1 nodes (83798 simplex iterations) in 50.03 seconds (47.22 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 2 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.400000000000e+01, gap 450.0000%

Wrote result file './lp_solutions/grafo5552.47.sol'

