
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:58:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6287.38.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/grafo6287.38.lp
Reading time = 0.36 seconds
: 224592 rows, 2370 columns, 675949 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 224592 rows, 2370 columns and 675949 nonzeros
Model fingerprint: 0xb42f7f3d
Variable types: 48 continuous, 2322 integer (2322 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 95723 rows and 19 columns
Presolve time: 1.52s
Presolved: 128869 rows, 2351 columns, 389185 nonzeros
Variable types: 0 continuous, 2351 integer (2303 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2339 rows, 131208 columns, 391536 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19373    6.2999149e+01   0.000000e+00   4.951206e+06      5s
   43859    5.4788610e+01   0.000000e+00   1.331724e+05     10s
   68214    5.4753948e+01   0.000000e+00   5.661478e+03     15s
   87023    5.5000000e+01   0.000000e+00   0.000000e+00     19s
   87023    5.5000000e+01   0.000000e+00   0.000000e+00     19s
   87023    5.5000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.500000e+01, 87023 iterations, 17.26 seconds (12.86 work units)
Total elapsed time = 36.71s (DegenMoves)
Total elapsed time = 41.17s (DegenMoves)

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

     0     0   55.00000    0  602   11.00000   55.00000   400%     -   43s
     0     0          -    0        11.00000   55.00000   400%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 53
  Clique: 56
  MIR: 109
  StrongCG: 1
  GUB cover: 2
  Zero half: 96
  RLT: 87
  BQP: 6

Explored 1 nodes (103151 simplex iterations) in 50.03 seconds (50.72 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 11 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.500000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo6287.38.sol'

