
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 08:06:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7327.39.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/grafo7327.39.lp
Reading time = 0.32 seconds
: 197348 rows, 2228 columns, 593982 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 197348 rows, 2228 columns and 593982 nonzeros
Model fingerprint: 0x7ef65814
Variable types: 46 continuous, 2182 integer (2182 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 80639 rows and 20 columns
Presolve time: 1.44s
Presolved: 116709 rows, 2208 columns, 352432 nonzeros
Variable types: 0 continuous, 2208 integer (2162 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2205 rows, 118914 columns, 354640 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21285    5.3975489e+01   0.000000e+00   6.910000e+04      5s
   46649    5.0793961e+01   0.000000e+00   3.568678e+04     10s
   73145    5.0770162e+01   0.000000e+00   5.380537e+03     15s
   80884    5.1000000e+01   0.000000e+00   0.000000e+00     17s
   80884    5.1000000e+01   0.000000e+00   0.000000e+00     17s
   80884    5.1000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 5.100000e+01, 80884 iterations, 14.87 seconds (10.95 work units)
Total elapsed time = 30.12s (DegenMoves)

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

     0     0   51.00000    0  449    7.00000   51.00000   629%     -   33s
H    0     0                       8.0000000   51.00000   537%     -   33s
     0     0          -    0         8.00000   51.00000   537%     -   50s

Cutting planes:
  Gomory: 30
  Cover: 48
  Clique: 36
  MIR: 169
  StrongCG: 1
  GUB cover: 7
  Zero half: 69
  RLT: 88
  BQP: 5

Explored 1 nodes (99119 simplex iterations) in 50.02 seconds (50.90 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.100000000000e+01, gap 537.5000%

Wrote result file './lp_solutions/grafo7327.39.sol'

