
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:10:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7176.49.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/grafo7176.49.lp
Reading time = 0.20 seconds
: 108615 rows, 2806 columns, 328157 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 108615 rows, 2806 columns and 328157 nonzeros
Model fingerprint: 0x7e2934ad
Variable types: 51 continuous, 2755 integer (2755 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 18445 rows and 19 columns
Presolve time: 0.84s
Presolved: 90170 rows, 2787 columns, 273366 nonzeros
Variable types: 0 continuous, 2787 integer (2736 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2779 rows, 92949 columns, 276153 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17033    3.7964442e+01   0.000000e+00   6.529915e+04      5s
   34461    3.7944406e+01   0.000000e+00   2.357733e+04     10s
   49905    3.7939520e+01   0.000000e+00   1.591076e+04     15s
   63237    3.8000000e+01   0.000000e+00   0.000000e+00     19s
   63237    3.8000000e+01   0.000000e+00   0.000000e+00     19s
   63237    3.8000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 3.800000e+01, 63237 iterations, 18.34 seconds (11.47 work units)
Total elapsed time = 44.89s (DegenMoves)

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

     0     0   38.00000    0  963    7.00000   38.00000   443%     -   50s

Explored 1 nodes (82154 simplex iterations) in 50.04 seconds (39.24 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 3.800000000000e+01, gap 442.8571%

Wrote result file './lp_solutions/grafo7176.49.sol'

