
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:55:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6678.46.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/grafo6678.46.lp
Reading time = 0.28 seconds
: 151714 rows, 2450 columns, 457008 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 151714 rows, 2450 columns and 457008 nonzeros
Model fingerprint: 0xe6899bb0
Variable types: 46 continuous, 2404 integer (2404 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 49915 rows and 21 columns
Presolve time: 1.35s
Presolved: 101799 rows, 2429 columns, 307487 nonzeros
Variable types: 0 continuous, 2429 integer (2383 binary)
Root relaxation presolved: 2429 rows, 104228 columns, 309916 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15537    4.5811944e+01   0.000000e+00   1.808247e+05      5s
   34166    4.5720389e+01   0.000000e+00   8.677857e+03     10s
   53206    4.5703682e+01   0.000000e+00   1.127650e+03     15s
   66628    4.6000000e+01   0.000000e+00   0.000000e+00     19s
   66628    4.6000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.600000e+01, 66628 iterations, 17.15 seconds (10.25 work units)
Total elapsed time = 31.52s (DegenMoves)

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

     0     0   46.00000    0  454          -   46.00000      -     -   33s
H    0     0                       4.0000000   46.00000  1050%     -   36s
     0     0   46.00000    0  644    4.00000   46.00000  1050%     -   44s
H    0     0                       6.0000000   46.00000   667%     -   45s
     0     0   46.00000    0  631    6.00000   46.00000   667%     -   45s
     0     0          -    0         6.00000   46.00000   667%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 33
  Cover: 10
  Clique: 18
  MIR: 134
  GUB cover: 1
  Zero half: 51
  RLT: 55
  BQP: 5

Explored 1 nodes (82081 simplex iterations) in 50.03 seconds (36.71 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 4 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.600000000000e+01, gap 666.6667%

Wrote result file './lp_solutions/grafo6678.46.sol'

