
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:20:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6133.39.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/grafo6133.39.lp
Reading time = 0.15 seconds
: 93541 rows, 2053 columns, 282320 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 93541 rows, 2053 columns and 282320 nonzeros
Model fingerprint: 0xb0d5488d
Variable types: 45 continuous, 2008 integer (2008 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 1.0000000
Presolve removed 26145 rows and 31 columns
Presolve time: 0.69s
Presolved: 67396 rows, 2022 columns, 204234 nonzeros
Variable types: 0 continuous, 2022 integer (1977 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2022 rows, 69418 columns, 206256 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26177    4.2799694e+01   0.000000e+00   3.534856e+03      5s
   32878    4.3000000e+01   0.000000e+00   0.000000e+00      6s
   32878    4.3000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.300000e+01, 32878 iterations, 5.42 seconds (4.34 work units)
Total elapsed time = 11.72s (DegenMoves)

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

     0     0   43.00000    0  537    5.00000   43.00000   760%     -   13s
H    0     0                       6.0000000   43.00000   617%     -   13s
H    0     0                       8.0000000   43.00000   437%     -   16s
     0     0   43.00000    0  828    8.00000   43.00000   437%     -   28s
     0     0   43.00000    0  824    8.00000   43.00000   437%     -   30s
     0     0   43.00000    0  651    8.00000   43.00000   437%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 20
  Cover: 11
  Clique: 19
  MIR: 130
  Zero half: 22
  RLT: 73
  BQP: 2

Explored 1 nodes (64034 simplex iterations) in 50.08 seconds (43.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 6 5 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo6133.39.sol'

