
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:21:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6027.40.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/grafo6027.40.lp
Reading time = 0.15 seconds
: 91770 rows, 2367 columns, 277427 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 91770 rows, 2367 columns and 277427 nonzeros
Model fingerprint: 0xc35a79f2
Variable types: 49 continuous, 2318 integer (2318 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 20362 rows and 28 columns
Presolve time: 0.64s
Presolved: 71408 rows, 2339 columns, 216879 nonzeros
Variable types: 0 continuous, 2339 integer (2290 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2339 rows, 73747 columns, 219218 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24745    4.6933508e+01   0.000000e+00   3.014148e+04      5s
   48936    4.6920510e+01   0.000000e+00   3.207509e+02     10s
   50485    4.7000000e+01   0.000000e+00   0.000000e+00     10s
   50485    4.7000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.700000e+01, 50485 iterations, 9.60 seconds (8.83 work units)
Total elapsed time = 19.93s (DegenMoves)
Total elapsed time = 20.52s (DegenMoves)

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

     0     0   47.00000    0  478   12.00000   47.00000   292%     -   22s
H    0     0                      14.0000000   47.00000   236%     -   22s
     0     0   47.00000    0  765   14.00000   47.00000   236%     -   32s
     0     0   47.00000    0  657   14.00000   47.00000   236%     -   34s
     0     0   47.00000    0  684   14.00000   47.00000   236%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 28
  Cover: 15
  Clique: 5
  MIR: 97
  Zero half: 18
  RLT: 49

Explored 1 nodes (80666 simplex iterations) in 50.07 seconds (44.61 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 14 12 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.700000000000e+01, gap 235.7143%

Wrote result file './lp_solutions/grafo6027.40.sol'

