
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:14:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5502.37.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/grafo5502.37.lp
Reading time = 0.22 seconds
: 133582 rows, 2143 columns, 402690 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 133582 rows, 2143 columns and 402690 nonzeros
Model fingerprint: 0xfe639d52
Variable types: 47 continuous, 2096 integer (2096 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 47491 rows and 25 columns
Presolve time: 0.95s
Presolved: 86091 rows, 2118 columns, 260620 nonzeros
Variable types: 0 continuous, 2118 integer (2071 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2112 rows, 88203 columns, 262738 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21208    4.7853717e+01   0.000000e+00   6.907816e+05      5s
   46749    4.7816812e+01   0.000000e+00   1.498296e+03     10s
   55211    4.8000000e+01   0.000000e+00   0.000000e+00     12s
   55211    4.8000000e+01   0.000000e+00   0.000000e+00     12s
   55211    4.8000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.800000e+01, 55211 iterations, 10.72 seconds (7.70 work units)
Total elapsed time = 28.28s (DegenMoves)
Total elapsed time = 37.64s (DegenMoves)

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

     0     0   48.00000    0  647    4.00000   48.00000  1100%     -   39s
H    0     0                       5.0000000   48.00000   860%     -   40s
H    0     0                       7.0000000   48.00000   586%     -   40s
     0     0          -    0         7.00000   48.00000   586%     -   50s

Cutting planes:
  Gomory: 24
  Cover: 36
  Clique: 9
  MIR: 140
  GUB cover: 5
  Zero half: 44
  RLT: 80

Explored 1 nodes (79376 simplex iterations) in 50.02 seconds (52.30 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 7 5 4 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.800000000000e+01, gap 585.7143%

Wrote result file './lp_solutions/grafo5502.37.sol'

