
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:54:55 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6244.39.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/grafo6244.39.lp
Reading time = 0.28 seconds
: 173432 rows, 2300 columns, 522311 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 173432 rows, 2300 columns and 522311 nonzeros
Model fingerprint: 0x96775116
Variable types: 47 continuous, 2253 integer (2253 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 69101 rows and 21 columns
Presolve time: 1.24s
Presolved: 104331 rows, 2279 columns, 315405 nonzeros
Variable types: 0 continuous, 2279 integer (2232 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2276 rows, 106607 columns, 317684 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22714    5.2920613e+01   0.000000e+00   2.919162e+04      5s
   47464    5.2904625e+01   0.000000e+00   1.012169e+03     10s
   52750    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   52750    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   52750    5.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.300000e+01, 52750 iterations, 9.80 seconds (7.88 work units)
Total elapsed time = 28.02s (DegenMoves)
Total elapsed time = 30.61s (DegenMoves)

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

     0     0   53.00000    0  620    7.00000   53.00000   657%     -   33s
H    0     0                       9.0000000   53.00000   489%     -   33s
     0     0          -    0         9.00000   53.00000   489%     -   50s

Cutting planes:
  Gomory: 34
  Cover: 47
  Clique: 32
  MIR: 221
  StrongCG: 1
  GUB cover: 1
  Zero half: 43
  RLT: 88
  BQP: 9

Explored 1 nodes (74463 simplex iterations) in 50.02 seconds (52.13 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.300000000000e+01, gap 488.8889%

Wrote result file './lp_solutions/grafo6244.39.sol'

