
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:33:09 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7722.43.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/grafo7722.43.lp
Reading time = 0.21 seconds
: 128643 rows, 2540 columns, 388174 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 128643 rows, 2540 columns and 388174 nonzeros
Model fingerprint: 0x4806382d
Variable types: 51 continuous, 2489 integer (2489 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 34731 rows and 33 columns
Presolve time: 0.96s
Presolved: 93912 rows, 2507 columns, 284409 nonzeros
Variable types: 0 continuous, 2507 integer (2456 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2498 rows, 96410 columns, 286916 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20667    4.5993245e+01   0.000000e+00   4.360544e+05      5s
   42465    4.5963215e+01   0.000000e+00   5.597520e+04     10s
   64095    4.5953869e+01   0.000000e+00   8.501751e+02     15s
   78252    4.6000000e+01   0.000000e+00   0.000000e+00     18s
   78252    4.6000000e+01   0.000000e+00   0.000000e+00     18s
   78252    4.6000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 4.600000e+01, 78252 iterations, 17.16 seconds (15.29 work units)
Total elapsed time = 38.05s (DegenMoves)

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

     0     0   46.00000    0  609    6.00000   46.00000   667%     -   40s
H    0     0                       7.0000000   46.00000   557%     -   40s
     0     0          -    0         7.00000   46.00000   557%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 33
  Clique: 12
  MIR: 172
  StrongCG: 1
  GUB cover: 7
  Zero half: 90
  RLT: 53

Explored 1 nodes (98636 simplex iterations) in 50.02 seconds (48.13 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 6 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.600000000000e+01, gap 557.1429%

Wrote result file './lp_solutions/grafo7722.43.sol'

