
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:32:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1498.48.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/grafo1498.48.lp
Reading time = 0.30 seconds
: 165298 rows, 2692 columns, 497990 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 165298 rows, 2692 columns and 497990 nonzeros
Model fingerprint: 0xdef1dcd8
Variable types: 48 continuous, 2644 integer (2644 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 52043 rows and 23 columns
Presolve time: 1.55s
Presolved: 113255 rows, 2669 columns, 342345 nonzeros
Variable types: 0 continuous, 2669 integer (2621 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2663 rows, 115918 columns, 345014 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13940    4.7733307e+01   0.000000e+00   4.095628e+05      5s
   31141    4.5660551e+01   0.000000e+00   1.519815e+04     10s
   47311    4.5650143e+01   0.000000e+00   1.284566e+04     15s
   51974    4.6000000e+01   0.000000e+00   0.000000e+00     17s
   51974    4.6000000e+01   0.000000e+00   0.000000e+00     17s
   51974    4.6000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 4.600000e+01, 51974 iterations, 14.87 seconds (10.41 work units)
Total elapsed time = 32.70s (DegenMoves)
Total elapsed time = 35.52s (DegenMoves)

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

     0     0   46.00000    0  564    4.00000   46.00000  1050%     -   37s
H    0     0                       7.0000000   46.00000   557%     -   38s
     0     0          -    0         7.00000   46.00000   557%     -   50s

Cutting planes:
  Gomory: 30
  Cover: 47
  Clique: 22
  MIR: 120
  GUB cover: 3
  Zero half: 103
  RLT: 59
  BQP: 4

Explored 1 nodes (70789 simplex iterations) in 50.04 seconds (43.06 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 4 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.600000000000e+01, gap 557.1429%

Wrote result file './lp_solutions/grafo1498.48.sol'

