
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:20:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6675.44.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/grafo6675.44.lp
Reading time = 0.15 seconds
: 97309 rows, 2695 columns, 294328 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 97309 rows, 2695 columns and 294328 nonzeros
Model fingerprint: 0x7649c229
Variable types: 53 continuous, 2642 integer (2642 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 14396 rows and 0 columns
Presolve time: 0.53s
Presolved: 82913 rows, 2695 columns, 251599 nonzeros
Variable types: 0 continuous, 2695 integer (2642 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2659 rows, 85572 columns, 254294 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21242    5.4926712e+01   0.000000e+00   3.380332e+04      5s
   41192    5.4905041e+01   0.000000e+00   3.242066e+03     10s
   60442    5.4900307e+01   0.000000e+00   1.223755e+02     15s
   64792    5.5000000e+01   0.000000e+00   0.000000e+00     16s
   64792    5.5000000e+01   0.000000e+00   0.000000e+00     16s
   64792    5.5000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.500000e+01, 64792 iterations, 15.63 seconds (12.98 work units)
Total elapsed time = 36.57s (DegenMoves)

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

     0     0   55.00000    0  938    8.00000   55.00000   587%     -   40s
H    0     0                      11.0000000   55.00000   400%     -   40s
     0     0          -    0        11.00000   55.00000   400%     -   50s

Cutting planes:
  Gomory: 29
  Cover: 21
  Clique: 1
  MIR: 98
  Zero half: 17
  RLT: 34

Explored 1 nodes (89468 simplex iterations) in 50.02 seconds (45.88 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 8 1 

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

Wrote result file './lp_solutions/grafo6675.44.sol'

