
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:00:51 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6362.44.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/grafo6362.44.lp
Reading time = 0.38 seconds
: 205754 rows, 2281 columns, 619001 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 205754 rows, 2281 columns and 619001 nonzeros
Model fingerprint: 0xdaa0923f
Variable types: 43 continuous, 2238 integer (2238 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 83975 rows and 34 columns
Presolve time: 1.76s
Presolved: 121779 rows, 2247 columns, 367296 nonzeros
Variable types: 0 continuous, 2247 integer (2204 binary)
Root relaxation presolved: 2240 rows, 124019 columns, 369543 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14469    5.1968015e+01   0.000000e+00   6.111198e+05      5s
   35733    4.4817194e+01   0.000000e+00   2.761805e+04     10s
   57711    4.4785747e+01   0.000000e+00   2.374858e+03     15s
   74646    4.5000000e+01   0.000000e+00   0.000000e+00     19s
   74646    4.5000000e+01   0.000000e+00   0.000000e+00     19s
   74646    4.5000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.500000e+01, 74646 iterations, 16.96 seconds (10.03 work units)
Total elapsed time = 36.16s (DegenMoves)
Total elapsed time = 41.64s (DegenMoves)
Total elapsed time = 45.07s (DegenMoves)

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

     0     0   45.00000    0  511          -   45.00000      -     -   45s
H    0     0                       8.0000000   45.00000   462%     -   50s

Cutting planes:
  Gomory: 33
  Cover: 40
  Clique: 23
  MIR: 138
  GUB cover: 2
  Zero half: 58
  RLT: 66
  BQP: 7

Explored 1 nodes (90820 simplex iterations) in 50.12 seconds (42.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

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

Wrote result file './lp_solutions/grafo6362.44.sol'

