
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:27:55 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7195.42.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/grafo7195.42.lp
Reading time = 0.56 seconds
: 251984 rows, 2064 columns, 757433 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 251984 rows, 2064 columns and 757433 nonzeros
Model fingerprint: 0x2812d025
Variable types: 40 continuous, 2024 integer (2024 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 1.0000000
Presolve removed 112325 rows and 18 columns
Presolve time: 2.40s
Presolved: 139659 rows, 2046 columns, 420754 nonzeros
Variable types: 0 continuous, 2046 integer (2006 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2046 rows, 141705 columns, 422800 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16336    6.0998446e+01   0.000000e+00   6.512625e+04      5s
   40070    4.2923427e+01   0.000000e+00   3.902547e+04     10s
   62176    4.2901726e+01   0.000000e+00   3.228100e+03     15s
   76165    4.3000000e+01   0.000000e+00   0.000000e+00     18s
   76165    4.3000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 4.300000e+01, 76165 iterations, 15.67 seconds (9.02 work units)
Total elapsed time = 32.49s (DegenMoves)
Total elapsed time = 35.49s (DegenMoves)

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

     0     0   43.00000    0  472    6.00000   43.00000   617%     -   38s
H    0     0                      10.0000000   43.00000   330%     -   38s
     0     0          -    0        10.00000   43.00000   330%     -   50s

Cutting planes:
  Gomory: 27
  Cover: 43
  Clique: 32
  MIR: 109
  StrongCG: 1
  GUB cover: 2
  Zero half: 80
  RLT: 61
  BQP: 2

Explored 1 nodes (88023 simplex iterations) in 50.04 seconds (39.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 6 1 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.300000000000e+01, gap 330.0000%

Wrote result file './lp_solutions/grafo7195.42.sol'

