
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:16:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5407.39.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/grafo5407.39.lp
Reading time = 0.20 seconds
: 123174 rows, 2285 columns, 371530 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 123174 rows, 2285 columns and 371530 nonzeros
Model fingerprint: 0xaef0dd44
Variable types: 48 continuous, 2237 integer (2237 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 39106 rows and 27 columns
Presolve time: 0.94s
Presolved: 84068 rows, 2258 columns, 254682 nonzeros
Variable types: 0 continuous, 2258 integer (2210 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2252 rows, 86320 columns, 256940 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24288    4.7881516e+01   0.000000e+00   4.934930e+03      5s
   38903    4.8000000e+01   0.000000e+00   0.000000e+00      8s
   38903    4.8000000e+01   0.000000e+00   0.000000e+00      8s
   38903    4.8000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.800000e+01, 38903 iterations, 7.07 seconds (6.14 work units)
Total elapsed time = 22.37s (DegenMoves)
Total elapsed time = 25.56s (DegenMoves)

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

     0     0   48.00000    0  574    8.00000   48.00000   500%     -   27s
     0     0   48.00000    0  946    8.00000   48.00000   500%     -   43s
     0     0   48.00000    0  912    8.00000   48.00000   500%     -   45s
     0     0          -    0         8.00000   48.00000   500%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 26
  Clique: 34
  MIR: 130
  GUB cover: 1
  Zero half: 69
  RLT: 84
  BQP: 2

Explored 1 nodes (66614 simplex iterations) in 50.03 seconds (53.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.800000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo5407.39.sol'

