
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:36:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6439.41.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/grafo6439.41.lp
Reading time = 0.33 seconds
: 176579 rows, 2375 columns, 531756 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 176579 rows, 2375 columns and 531756 nonzeros
Model fingerprint: 0x43989440
Variable types: 47 continuous, 2328 integer (2328 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 67541 rows and 18 columns
Presolve time: 1.59s
Presolved: 109038 rows, 2357 columns, 329485 nonzeros
Variable types: 0 continuous, 2357 integer (2310 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2351 rows, 111389 columns, 331842 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17473    5.6997219e+01   0.000000e+00   3.716504e+05      5s
   36830    5.6958130e+01   0.000000e+00   9.205421e+03     10s
   54923    5.6952428e+01   0.000000e+00   1.698918e+03     15s
   72682    5.6951686e+01   0.000000e+00   5.050448e+00     20s
   74612    5.7000000e+01   0.000000e+00   0.000000e+00     21s
   74612    5.7000000e+01   0.000000e+00   0.000000e+00     21s
   74612    5.7000000e+01   0.000000e+00   0.000000e+00     21s

Root relaxation: objective 5.700000e+01, 74612 iterations, 18.72 seconds (13.08 work units)
Total elapsed time = 44.75s (DegenMoves)
Total elapsed time = 48.11s (DegenMoves)

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

     0     0   57.00000    0  716    6.00000   57.00000   850%     -   50s

Explored 1 nodes (91172 simplex iterations) in 50.05 seconds (43.58 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.700000000000e+01, gap 850.0000%

Wrote result file './lp_solutions/grafo6439.41.sol'

