
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:26:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7086.47.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/grafo7086.47.lp
Reading time = 0.29 seconds
: 151125 rows, 2618 columns, 455434 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 151125 rows, 2618 columns and 455434 nonzeros
Model fingerprint: 0x66211dd5
Variable types: 49 continuous, 2569 integer (2569 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]
Found heuristic solution: objective 1.0000000
Presolve removed 44595 rows and 39 columns
Presolve time: 1.51s
Presolved: 106530 rows, 2579 columns, 321976 nonzeros
Variable types: 0 continuous, 2579 integer (2530 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2579 rows, 109109 columns, 324555 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14956    4.2844406e+01   0.000000e+00   8.035815e+04      5s
   32604    4.2759477e+01   0.000000e+00   8.157774e+03     10s
   45055    4.3000000e+01   0.000000e+00   0.000000e+00     14s
   45055    4.3000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.300000e+01, 45055 iterations, 12.24 seconds (7.93 work units)
Total elapsed time = 30.54s (DegenMoves)

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

     0     0   43.00000    0  537    8.00000   43.00000   438%     -   33s
     0     0          -    0         8.00000   43.00000   438%     -   50s

Cutting planes:
  Gomory: 29
  Cover: 38
  Clique: 32
  MIR: 114
  GUB cover: 7
  Zero half: 50
  RLT: 66
  BQP: 3

Explored 1 nodes (64673 simplex iterations) in 50.02 seconds (40.62 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo7086.47.sol'

