
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:18:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3927.45.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/grafo3927.45.lp
Reading time = 0.36 seconds
: 187758 rows, 2477 columns, 565209 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 187758 rows, 2477 columns and 565209 nonzeros
Model fingerprint: 0x6d0b1fc9
Variable types: 46 continuous, 2431 integer (2431 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 76939 rows and 23 columns
Presolve time: 1.60s
Presolved: 110819 rows, 2454 columns, 334959 nonzeros
Variable types: 0 continuous, 2454 integer (2408 binary)
Root relaxation presolved: 2451 rows, 113270 columns, 337413 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14480    6.1891566e+01   0.000000e+00   1.402627e+05      5s
   32851    5.0813462e+01   0.000000e+00   3.947765e+05     10s
   50703    5.0800500e+01   0.000000e+00   4.683428e+02     15s
   59602    5.1000000e+01   0.000000e+00   0.000000e+00     18s
   59602    5.1000000e+01   0.000000e+00   0.000000e+00     18s
   59602    5.1000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.100000e+01, 59602 iterations, 15.75 seconds (9.68 work units)
Total elapsed time = 41.39s (DegenMoves)
Total elapsed time = 45.42s (DegenMoves)

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

     0     0   51.00000    0  680          -   51.00000      -     -   47s
H    0     0                       6.0000000   51.00000   750%     -   47s
H    0     0                       7.0000000   51.00000   629%     -   47s

Cutting planes:
  Cover: 46
  Clique: 24
  MIR: 244
  StrongCG: 1
  GUB cover: 6

Explored 1 nodes (75890 simplex iterations) in 50.05 seconds (41.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 6 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.100000000000e+01, gap 628.5714%

Wrote result file './lp_solutions/grafo3927.45.sol'

