
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:20:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6058.42.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/grafo6058.42.lp
Reading time = 0.19 seconds
: 96792 rows, 2303 columns, 292305 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 96792 rows, 2303 columns and 292305 nonzeros
Model fingerprint: 0xdecd4a5c
Variable types: 46 continuous, 2257 integer (2257 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 5.0000000
Presolve removed 25774 rows and 20 columns
Presolve time: 0.86s
Presolved: 71018 rows, 2283 columns, 215567 nonzeros
Variable types: 0 continuous, 2283 integer (2237 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2283 rows, 73301 columns, 217850 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19994    4.0823928e+01   0.000000e+00   1.761426e+03      5s
   29080    4.1000000e+01   0.000000e+00   0.000000e+00      7s
   29080    4.1000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.100000e+01, 29080 iterations, 6.31 seconds (4.02 work units)
Total elapsed time = 18.97s (DegenMoves)
Total elapsed time = 20.11s (DegenMoves)

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

     0     0   41.00000    0  564   10.00000   41.00000   310%     -   20s
H    0     0                      12.0000000   41.00000   242%     -   25s
     0     0   41.00000    0  810   12.00000   41.00000   242%     -   38s
     0     0   41.00000    0  779   12.00000   41.00000   242%     -   41s
     0     0          -    0        12.00000   41.00000   242%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 2
  Cover: 8
  Clique: 13
  MIR: 82
  StrongCG: 1
  Zero half: 170
  RLT: 50
  BQP: 2

Explored 1 nodes (50723 simplex iterations) in 50.11 seconds (31.39 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 5 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.100000000000e+01, gap 241.6667%

Wrote result file './lp_solutions/grafo6058.42.sol'

