
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:35:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7607.42.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/grafo7607.42.lp
Reading time = 0.53 seconds
: 240776 rows, 2873 columns, 725079 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 240776 rows, 2873 columns and 725079 nonzeros
Model fingerprint: 0xc3c6c238
Variable types: 55 continuous, 2818 integer (2818 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, 6e+01]
Found heuristic solution: objective 2.0000000
Presolve removed 90042 rows and 19 columns
Presolve time: 2.24s
Presolved: 150734 rows, 2854 columns, 455413 nonzeros
Variable types: 0 continuous, 2854 integer (2799 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2848 rows, 153582 columns, 458267 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12108    8.9361926e+01   0.000000e+00   2.727183e+05      5s
   27751    6.9521976e+01   0.000000e+00   3.746418e+05     10s
   42125    6.4749347e+01   0.000000e+00   1.073349e+05     15s
   57052    6.4697573e+01   0.000000e+00   1.153874e+05     20s
   71308    6.4681458e+01   0.000000e+00   4.198990e+04     25s
   85564    6.4674091e+01   0.000000e+00   1.539648e+03     30s
   99172    6.4671927e+01   0.000000e+00   1.786858e+00     35s
  100037    6.5000000e+01   0.000000e+00   0.000000e+00     35s
  100037    6.5000000e+01   0.000000e+00   0.000000e+00     35s
  100037    6.5000000e+01   0.000000e+00   0.000000e+00     35s

Root relaxation: objective 6.500000e+01, 100037 iterations, 32.95 seconds (19.48 work units)

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

     0     0   65.00000    0 1534    8.00000   65.00000   713%     -   50s

Explored 1 nodes (104786 simplex iterations) in 50.08 seconds (34.17 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 6.500000000000e+01, gap 712.5000%

Wrote result file './lp_solutions/grafo7607.42.sol'

