
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:33:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6286.41.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/grafo6286.41.lp
Reading time = 0.19 seconds
: 91901 rows, 2330 columns, 277718 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 91901 rows, 2330 columns and 277718 nonzeros
Model fingerprint: 0x65ddf3ae
Variable types: 48 continuous, 2282 integer (2282 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 29074 rows and 110 columns
Presolve time: 0.66s
Presolved: 62827 rows, 2220 columns, 190872 nonzeros
Variable types: 0 continuous, 2220 integer (2172 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2220 rows, 65047 columns, 193092 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19295    4.4983338e+01   0.000000e+00   1.072255e+05      5s
   39200    4.4964136e+01   0.000000e+00   1.648253e+04     10s
   57317    4.4959666e+01   0.000000e+00   9.361559e+02     15s
   66562    4.5000000e+01   0.000000e+00   0.000000e+00     18s
   66562    4.5000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 4.500000e+01, 66562 iterations, 16.78 seconds (10.91 work units)
Total elapsed time = 36.64s (DegenMoves)
Total elapsed time = 41.06s (DegenMoves)

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

     0     0   45.00000    0  791    6.00000   45.00000   650%     -   44s
H    0     0                       8.0000000   45.00000   462%     -   44s

Cutting planes:
  Cover: 24
  Clique: 6
  MIR: 262
  StrongCG: 3
  GUB cover: 5

Explored 1 nodes (87111 simplex iterations) in 50.19 seconds (37.93 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 6 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.500000000000e+01, gap 462.5000%

Wrote result file './lp_solutions/grafo6286.41.sol'

