
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:43:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3231.43.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/grafo3231.43.lp
Reading time = 0.11 seconds
: 71454 rows, 2215 columns, 216062 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 71454 rows, 2215 columns and 216062 nonzeros
Model fingerprint: 0x374ebcd5
Variable types: 45 continuous, 2170 integer (2170 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 10742 rows and 28 columns
Presolve time: 0.48s
Presolved: 60712 rows, 2187 columns, 184281 nonzeros
Variable types: 0 continuous, 2187 integer (2142 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2187 rows, 62899 columns, 186468 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28010    4.2970265e+01   0.000000e+00   8.607077e+03      5s
   45497    4.3000000e+01   0.000000e+00   0.000000e+00      9s
   45497    4.3000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.300000e+01, 45497 iterations, 8.05 seconds (7.38 work units)
Total elapsed time = 20.07s (DegenMoves)

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

     0     0   43.00000    0  623    6.00000   43.00000   617%     -   23s
H    0     0                       8.0000000   43.00000   437%     -   23s
     0     0   43.00000    0 1041    8.00000   43.00000   437%     -   39s
     0     0   43.00000    0  996    8.00000   43.00000   437%     -   42s
     0     0   43.00000    0  968    8.00000   43.00000   437%     -   50s

Cutting planes:
  Gomory: 5
  Cover: 5
  Clique: 3
  MIR: 117
  GUB cover: 1
  Zero half: 75
  RLT: 62
  BQP: 1

Explored 1 nodes (77528 simplex iterations) in 50.08 seconds (44.12 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 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo3231.43.sol'

