
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:43:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1327.50.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/grafo1327.50.lp
Reading time = 0.25 seconds
: 149081 rows, 2777 columns, 449362 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 149081 rows, 2777 columns and 449362 nonzeros
Model fingerprint: 0x071d70dd
Variable types: 49 continuous, 2728 integer (2728 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 40587 rows and 29 columns
Presolve time: 1.19s
Presolved: 108494 rows, 2748 columns, 327952 nonzeros
Variable types: 0 continuous, 2748 integer (2699 binary)
Root relaxation presolved: 2748 rows, 111242 columns, 330700 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17108    4.6865484e+01   0.000000e+00   1.044035e+05      5s
   36777    4.6779665e+01   0.000000e+00   6.206911e+03     10s
   55965    4.6772852e+01   0.000000e+00   7.988508e+01     15s
   57102    4.7000000e+01   0.000000e+00   0.000000e+00     15s
   57102    4.7000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 4.700000e+01, 57102 iterations, 14.00 seconds (10.23 work units)
Total elapsed time = 30.62s (DegenMoves)

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

     0     0   47.00000    0  579          -   47.00000      -     -   33s
H    0     0                       7.0000000   47.00000   571%     -   37s
     0     0          -    0         7.00000   47.00000   571%     -   50s

Cutting planes:
  Gomory: 38
  Cover: 43
  Clique: 44
  MIR: 137
  StrongCG: 2
  GUB cover: 8
  Zero half: 47
  RLT: 89
  BQP: 17

Explored 1 nodes (76169 simplex iterations) in 50.05 seconds (44.19 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.700000000000e+01, gap 571.4286%

Wrote result file './lp_solutions/grafo1327.50.sol'

