
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:59:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6511.46.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/grafo6511.46.lp
Reading time = 0.14 seconds
: 88897 rows, 2578 columns, 268773 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 88897 rows, 2578 columns and 268773 nonzeros
Model fingerprint: 0x1fec9da7
Variable types: 50 continuous, 2528 integer (2528 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 11623 rows and 1 columns
Presolve time: 0.49s
Presolved: 77274 rows, 2577 columns, 234227 nonzeros
Variable types: 0 continuous, 2577 integer (2527 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2544 rows, 79818 columns, 236804 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23116    5.1954964e+01   0.000000e+00   3.428665e+04      5s
   45166    5.1939600e+01   0.000000e+00   5.766145e+03     10s
   65561    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   65561    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   65561    5.2000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.200000e+01, 65561 iterations, 14.06 seconds (11.75 work units)
Total elapsed time = 31.44s (DegenMoves)
Total elapsed time = 37.75s (DegenMoves)
Total elapsed time = 42.97s (DegenMoves)

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

     0     0   52.00000    0  828    6.00000   52.00000   767%     -   43s
H    0     0                       9.0000000   52.00000   478%     -   43s
     0     0          -    0         9.00000   52.00000   478%     -   50s

Cutting planes:
  Gomory: 24
  Cover: 30
  MIR: 187
  StrongCG: 1
  Zero half: 82
  RLT: 69

Explored 1 nodes (92103 simplex iterations) in 50.02 seconds (54.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.200000000000e+01, gap 477.7778%

Wrote result file './lp_solutions/grafo6511.46.sol'

