
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:26:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6498.40.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/grafo6498.40.lp
Reading time = 0.13 seconds
: 80158 rows, 2083 columns, 242129 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 80158 rows, 2083 columns and 242129 nonzeros
Model fingerprint: 0x778a4c3b
Variable types: 45 continuous, 2038 integer (2038 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 -0.0000000
Presolve removed 19044 rows and 24 columns
Presolve time: 0.52s
Presolved: 61114 rows, 2059 columns, 185295 nonzeros
Variable types: 0 continuous, 2059 integer (2014 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2059 rows, 63173 columns, 187354 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24397    5.2932215e+01   0.000000e+00   2.299108e+04      5s
   50095    5.2922037e+01   0.000000e+00   2.802368e+02     10s
   56752    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   56752    5.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.300000e+01, 56752 iterations, 10.75 seconds (9.40 work units)
Total elapsed time = 21.52s (DegenMoves)
Total elapsed time = 25.25s (DegenMoves)

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

     0     0   53.00000    0  670    7.00000   53.00000   657%     -   27s
H    0     0                       8.0000000   53.00000   562%     -   27s
     0     0   53.00000    0  764    8.00000   53.00000   562%     -   38s
     0     0   53.00000    0  745    8.00000   53.00000   562%     -   40s
     0     0   53.00000    0  914    8.00000   53.00000   562%     -   50s

Cutting planes:
  Gomory: 5
  Cover: 25
  Clique: 18
  MIR: 167
  StrongCG: 2
  GUB cover: 3
  Zero half: 57
  RLT: 97
  BQP: 1

Explored 1 nodes (88946 simplex iterations) in 50.06 seconds (48.90 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.300000000000e+01, gap 562.5000%

Wrote result file './lp_solutions/grafo6498.40.sol'

