
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:28:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6355.41.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/grafo6355.41.lp
Reading time = 0.28 seconds
: 171536 rows, 2880 columns, 517438 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 171536 rows, 2880 columns and 517438 nonzeros
Model fingerprint: 0xaac5b60e
Variable types: 57 continuous, 2823 integer (2823 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, 6e+01]
Found heuristic solution: objective 1.0000000
Presolve removed 51900 rows and 30 columns
Presolve time: 1.30s
Presolved: 119636 rows, 2850 columns, 362160 nonzeros
Variable types: 0 continuous, 2850 integer (2793 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2844 rows, 122480 columns, 365010 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16738    7.2890449e+01   0.000000e+00   1.859348e+05      5s
   36365    6.7709960e+01   0.000000e+00   4.376821e+04     10s
   55517    6.7681195e+01   0.000000e+00   6.434762e+03     15s
   74165    6.7675291e+01   0.000000e+00   3.280152e+02     20s
   75924    6.8000000e+01   0.000000e+00   0.000000e+00     21s
   75924    6.8000000e+01   0.000000e+00   0.000000e+00     21s
   75924    6.8000000e+01   0.000000e+00   0.000000e+00     21s

Root relaxation: objective 6.800000e+01, 75924 iterations, 19.10 seconds (15.65 work units)
Total elapsed time = 42.08s (DegenMoves)

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

     0     0   68.00000    0  707    6.00000   68.00000  1033%     -   45s
H    0     0                       9.0000000   68.00000   656%     -   45s
     0     0          -    0         9.00000   68.00000   656%     -   50s

Cutting planes:
  Gomory: 42
  Cover: 53
  Clique: 26
  MIR: 178
  StrongCG: 1
  GUB cover: 8
  Zero half: 50
  RLT: 50
  BQP: 2

Explored 1 nodes (94220 simplex iterations) in 50.03 seconds (47.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 6 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.800000000000e+01, gap 655.5556%

Wrote result file './lp_solutions/grafo6355.41.sol'

