
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 08:10:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7569.39.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/grafo7569.39.lp
Reading time = 0.33 seconds
: 196911 rows, 2098 columns, 592506 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 196911 rows, 2098 columns and 592506 nonzeros
Model fingerprint: 0x50cafb6e
Variable types: 44 continuous, 2054 integer (2054 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 81471 rows and 16 columns
Presolve time: 1.45s
Presolved: 115440 rows, 2082 columns, 348433 nonzeros
Variable types: 0 continuous, 2082 integer (2038 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2079 rows, 117519 columns, 350515 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20019    4.2845695e+01   0.000000e+00   6.255939e+04      5s
   48243    4.2793735e+01   0.000000e+00   1.846712e+02     10s
   51569    4.3000000e+01   0.000000e+00   0.000000e+00     11s
   51569    4.3000000e+01   0.000000e+00   0.000000e+00     11s
   51569    4.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.300000e+01, 51569 iterations, 9.03 seconds (6.94 work units)
Total elapsed time = 24.34s (DegenMoves)
Total elapsed time = 26.60s (DegenMoves)

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

     0     0   43.00000    0  496    6.00000   43.00000   617%     -   30s
H    0     0                       8.0000000   43.00000   437%     -   30s
     0     0   43.00000    0  834    8.00000   43.00000   437%     -   44s
     0     0   43.00000    0  793    8.00000   43.00000   437%     -   46s

Cutting planes:
  Gomory: 2
  Lift-and-project: 19
  Cover: 13
  Clique: 26
  MIR: 91
  Zero half: 73
  RLT: 21
  BQP: 1

Explored 1 nodes (71820 simplex iterations) in 50.39 seconds (53.62 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 6 

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

Wrote result file './lp_solutions/grafo7569.39.sol'

