
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:44:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3370.43.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/grafo3370.43.lp
Reading time = 0.35 seconds
: 123513 rows, 2645 columns, 372900 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 123513 rows, 2645 columns and 372900 nonzeros
Model fingerprint: 0x248e405f
Variable types: 52 continuous, 2593 integer (2593 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 30482 rows and 37 columns
Presolve time: 1.23s
Presolved: 93031 rows, 2608 columns, 281959 nonzeros
Variable types: 0 continuous, 2608 integer (2556 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2608 rows, 95639 columns, 284567 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17342    5.0856222e+01   0.000000e+00   3.125995e+04      5s
   33302    5.0831850e+01   0.000000e+00   3.070558e+04     10s
   48422    5.0828602e+01   0.000000e+00   1.629228e+01     15s
   49628    5.1000000e+01   0.000000e+00   0.000000e+00     15s
   49628    5.1000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.100000e+01, 49628 iterations, 13.99 seconds (8.94 work units)
Total elapsed time = 36.94s (DegenMoves)
Total elapsed time = 41.89s (DegenMoves)

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

     0     0   51.00000    0  776    7.00000   51.00000   629%     -   45s
H    0     0                       9.0000000   51.00000   467%     -   45s

Cutting planes:
  Cover: 45
  Clique: 18
  MIR: 267
  StrongCG: 1
  GUB cover: 6

Explored 1 nodes (69100 simplex iterations) in 50.04 seconds (42.35 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.100000000000e+01, gap 466.6667%

Wrote result file './lp_solutions/grafo3370.43.sol'

