
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 03:16:51 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1486.51.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/grafo1486.51.lp
Reading time = 0.22 seconds
: 92785 rows, 2829 columns, 280533 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 92785 rows, 2829 columns and 280533 nonzeros
Model fingerprint: 0x98aa4338
Variable types: 51 continuous, 2778 integer (2778 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 5950 rows and 1 columns
Presolve time: 0.81s
Presolved: 86835 rows, 2828 columns, 262948 nonzeros
Variable types: 0 continuous, 2828 integer (2777 binary)
Root relaxation presolved: 2798 rows, 89633 columns, 265776 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15122    4.6913809e+01   0.000000e+00   1.710795e+04      5s
   30967    4.6902291e+01   0.000000e+00   6.834864e+03     10s
   35094    4.7000000e+01   0.000000e+00   0.000000e+00     12s
   35094    4.7000000e+01   0.000000e+00   0.000000e+00     12s
   35094    4.7000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.700000e+01, 35094 iterations, 10.69 seconds (6.61 work units)
Total elapsed time = 31.60s (DegenMoves)
Total elapsed time = 37.68s (DegenMoves)

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

     0     0   47.00000    0  796          -   47.00000      -     -   38s
H    0     0                       5.0000000   47.00000   840%     -   38s
H    0     0                       9.0000000   47.00000   422%     -   39s
     0     0          -    0         9.00000   47.00000   422%     -   50s

Cutting planes:
  Gomory: 48
  Cover: 36
  Clique: 3
  MIR: 144
  StrongCG: 1
  Zero half: 26
  RLT: 58
  BQP: 1

Explored 1 nodes (60309 simplex iterations) in 50.02 seconds (36.04 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 5 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.700000000000e+01, gap 422.2222%

Wrote result file './lp_solutions/grafo1486.51.sol'

