
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:10:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6273.43.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/grafo6273.43.lp
Reading time = 0.29 seconds
: 182414 rows, 2536 columns, 549459 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 182414 rows, 2536 columns and 549459 nonzeros
Model fingerprint: 0x624cbd36
Variable types: 50 continuous, 2486 integer (2486 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 64831 rows and 26 columns
Presolve time: 1.28s
Presolved: 117583 rows, 2510 columns, 355297 nonzeros
Variable types: 0 continuous, 2510 integer (2460 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2507 rows, 120090 columns, 357807 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16747    5.0880688e+01   0.000000e+00   2.301566e+05      5s
   39125    5.0752916e+01   0.000000e+00   1.096045e+04     10s
   61434    5.0736466e+01   0.000000e+00   2.642921e+03     15s
   70145    5.1000000e+01   0.000000e+00   0.000000e+00     17s
   70145    5.1000000e+01   0.000000e+00   0.000000e+00     17s
   70145    5.1000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 5.100000e+01, 70145 iterations, 15.54 seconds (12.16 work units)
Total elapsed time = 31.69s (DegenMoves)
Total elapsed time = 35.97s (DegenMoves)

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

     0     0   51.00000    0  494    7.00000   51.00000   629%     -   36s
H    0     0                       8.0000000   51.00000   537%     -   36s
     0     0          -    0         8.00000   51.00000   537%     -   50s

Cutting planes:
  Gomory: 39
  Cover: 50
  Clique: 19
  MIR: 225
  GUB cover: 6
  Zero half: 69
  RLT: 77
  BQP: 3

Explored 1 nodes (90365 simplex iterations) in 50.02 seconds (52.78 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.100000000000e+01, gap 537.5000%

Wrote result file './lp_solutions/grafo6273.43.sol'

