
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:14:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6736.38.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/grafo6736.38.lp
Reading time = 0.25 seconds
: 158899 rows, 2319 columns, 478821 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 158899 rows, 2319 columns and 478821 nonzeros
Model fingerprint: 0xd96ef72f
Variable types: 49 continuous, 2270 integer (2270 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 59039 rows and 22 columns
Presolve time: 1.13s
Presolved: 99860 rows, 2297 columns, 302041 nonzeros
Variable types: 0 continuous, 2297 integer (2248 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2294 rows, 102154 columns, 304338 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20874    6.1885342e+01   0.000000e+00   9.627184e+04      5s
   46302    5.7797998e+01   0.000000e+00   7.207433e+03     10s
   57483    5.8000000e+01   0.000000e+00   0.000000e+00     12s
   57483    5.8000000e+01   0.000000e+00   0.000000e+00     12s
   57483    5.8000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 5.800000e+01, 57483 iterations, 11.15 seconds (8.51 work units)
Total elapsed time = 29.33s (DegenMoves)
Total elapsed time = 30.49s (DegenMoves)

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

     0     0   58.00000    0  606    8.00000   58.00000   625%     -   32s
     0     0          -    0         8.00000   58.00000   625%     -   50s

Cutting planes:
  Gomory: 48
  Cover: 53
  Clique: 37
  MIR: 208
  StrongCG: 3
  GUB cover: 5
  Zero half: 33
  RLT: 78
  BQP: 3

Explored 1 nodes (81067 simplex iterations) in 50.02 seconds (51.12 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 5.800000000000e+01, gap 625.0000%

Wrote result file './lp_solutions/grafo6736.38.sol'

