
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:17:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7286.43.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/grafo7286.43.lp
Reading time = 0.40 seconds
: 213224 rows, 2507 columns, 641868 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 213224 rows, 2507 columns and 641868 nonzeros
Model fingerprint: 0x9487a543
Variable types: 49 continuous, 2458 integer (2458 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 5.0000000
Presolve removed 80902 rows and 10 columns
Presolve time: 1.75s
Presolved: 132322 rows, 2497 columns, 399536 nonzeros
Variable types: 0 continuous, 2497 integer (2448 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2484 rows, 134806 columns, 402033 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14281    6.4901037e+01   0.000000e+00   6.989995e+06      5s
   33473    4.4760434e+01   0.000000e+00   3.779375e+04     10s
   49743    4.5000000e+01   0.000000e+00   0.000000e+00     15s
   49743    4.5000000e+01   0.000000e+00   0.000000e+00     15s
   49743    4.5000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 4.500000e+01, 49743 iterations, 12.94 seconds (8.37 work units)
Total elapsed time = 32.32s (DegenMoves)

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

     0     0   45.00000    0  404   12.00000   45.00000   275%     -   35s
H    0     0                      14.0000000   45.00000   221%     -   36s
     0     0          -    0        14.00000   45.00000   221%     -   50s

Cutting planes:
  Gomory: 38
  Cover: 39
  Clique: 19
  MIR: 118
  StrongCG: 1
  GUB cover: 2
  Zero half: 45
  RLT: 61
  BQP: 1

Explored 1 nodes (66558 simplex iterations) in 50.04 seconds (39.85 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 12 5 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.500000000000e+01, gap 221.4286%

Wrote result file './lp_solutions/grafo7286.43.sol'

