
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:54:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2062.42.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/grafo2062.42.lp
Reading time = 0.19 seconds
: 105336 rows, 2060 columns, 317483 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 105336 rows, 2060 columns and 317483 nonzeros
Model fingerprint: 0x6be2fb2a
Variable types: 41 continuous, 2019 integer (2019 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 36707 rows and 24 columns
Presolve time: 0.86s
Presolved: 68629 rows, 2036 columns, 207845 nonzeros
Variable types: 0 continuous, 2036 integer (1995 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2036 rows, 70665 columns, 209881 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20447    4.2816079e+01   0.000000e+00   6.090803e+03      5s
   34732    4.3000000e+01   0.000000e+00   0.000000e+00      8s
   34732    4.3000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.300000e+01, 34732 iterations, 7.22 seconds (4.86 work units)
Total elapsed time = 15.90s (DegenMoves)
Total elapsed time = 24.98s (DegenMoves)

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

     0     0   43.00000    0  494    5.00000   43.00000   760%     -   27s
H    0     0                       8.0000000   43.00000   438%     -   30s
     0     0   43.00000    0  814    8.00000   43.00000   438%     -   43s
     0     0   43.00000    0  776    8.00000   43.00000   438%     -   47s

Cutting planes:
  Gomory: 2
  Cover: 20
  Clique: 38
  MIR: 151
  StrongCG: 2
  Zero half: 30
  RLT: 47
  BQP: 4

Explored 1 nodes (60024 simplex iterations) in 50.37 seconds (40.91 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 5 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo2062.42.sol'

