
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:26:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6282.45.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/grafo6282.45.lp
Reading time = 0.24 seconds
: 118325 rows, 2391 columns, 356829 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 118325 rows, 2391 columns and 356829 nonzeros
Model fingerprint: 0x9789f7e7
Variable types: 45 continuous, 2346 integer (2346 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 34021 rows and 16 columns
Presolve time: 1.05s
Presolved: 84304 rows, 2375 columns, 255207 nonzeros
Variable types: 0 continuous, 2375 integer (2330 binary)
Root relaxation presolved: 2372 rows, 86676 columns, 257582 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17483    4.5807076e+01   0.000000e+00   4.341069e+04      5s
   36659    4.5772030e+01   0.000000e+00   3.329449e+03     10s
   54203    4.5768589e+01   0.000000e+00   2.159623e+02     15s
   55864    4.6000000e+01   0.000000e+00   0.000000e+00     16s
   55864    4.6000000e+01   0.000000e+00   0.000000e+00     16s
   55864    4.6000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.600000e+01, 55864 iterations, 14.31 seconds (8.67 work units)
Total elapsed time = 28.39s (DegenMoves)
Total elapsed time = 31.63s (DegenMoves)

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

     0     0   46.00000    0  500          -   46.00000      -     -   32s
H    0     0                       7.0000000   46.00000   557%     -   32s
H    0     0                       9.0000000   46.00000   411%     -   32s
     0     0          -    0         9.00000   46.00000   411%     -   50s

Cutting planes:
  Gomory: 41
  Cover: 59
  Clique: 30
  MIR: 128
  StrongCG: 1
  GUB cover: 3
  Zero half: 61
  RLT: 73
  BQP: 5

Explored 1 nodes (79134 simplex iterations) in 50.02 seconds (40.87 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.600000000000e+01, gap 411.1111%

Wrote result file './lp_solutions/grafo6282.45.sol'

