
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:24:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6189.40.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/grafo6189.40.lp
Reading time = 0.23 seconds
: 146799 rows, 2444 columns, 442628 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 146799 rows, 2444 columns and 442628 nonzeros
Model fingerprint: 0xfbcdd7b0
Variable types: 50 continuous, 2394 integer (2394 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 52880 rows and 21 columns
Presolve time: 0.96s
Presolved: 93919 rows, 2423 columns, 284531 nonzeros
Variable types: 0 continuous, 2423 integer (2373 binary)
Root relaxation presolved: 2414 rows, 96333 columns, 286954 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21457    5.2830181e+01   0.000000e+00   1.856832e+05      5s
   45325    5.2774738e+01   0.000000e+00   7.737151e+02     10s
   49216    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   49216    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   49216    5.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.300000e+01, 49216 iterations, 9.77 seconds (7.84 work units)
Total elapsed time = 19.66s (DegenMoves)
Total elapsed time = 20.17s (DegenMoves)

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

     0     0   53.00000    0  397          -   53.00000      -     -   21s
H    0     0                       6.0000000   53.00000   783%     -   21s
H    0     0                       7.0000000   53.00000   657%     -   21s
     0     0   53.00000    0  811    7.00000   53.00000   657%     -   36s
     0     0   53.00000    0  774    7.00000   53.00000   657%     -   38s
     0     0          -    0         7.00000   53.00000   657%     -   50s

Cutting planes:
  Gomory: 9
  Lift-and-project: 34
  Cover: 19
  Clique: 12
  MIR: 120
  StrongCG: 1
  GUB cover: 1
  Zero half: 15
  RLT: 49
  BQP: 3

Explored 1 nodes (73802 simplex iterations) in 50.02 seconds (50.38 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 5.300000000000e+01, gap 657.1429%

Wrote result file './lp_solutions/grafo6189.40.sol'

