
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:44:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3321.38.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/grafo3321.38.lp
Reading time = 0.26 seconds
: 163439 rows, 2285 columns, 492368 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 163439 rows, 2285 columns and 492368 nonzeros
Model fingerprint: 0xe897b3f7
Variable types: 48 continuous, 2237 integer (2237 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 65922 rows and 37 columns
Presolve time: 1.19s
Presolved: 97517 rows, 2248 columns, 295215 nonzeros
Variable types: 0 continuous, 2248 integer (2200 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2248 rows, 99765 columns, 297463 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18764    5.0803533e+01   0.000000e+00   5.544464e+04      5s
   42799    4.8757785e+01   0.000000e+00   1.930122e+03     10s
   59269    4.9000000e+01   0.000000e+00   0.000000e+00     14s
   59269    4.9000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.900000e+01, 59269 iterations, 12.24 seconds (9.05 work units)
Total elapsed time = 27.35s (DegenMoves)
Total elapsed time = 30.40s (DegenMoves)

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

     0     0   49.00000    0  562    5.00000   49.00000   880%     -   31s
H    0     0                       6.0000000   49.00000   717%     -   31s
     0     0          -    0         6.00000   49.00000   717%     -   50s

Cutting planes:
  Gomory: 42
  Cover: 50
  Clique: 20
  MIR: 160
  GUB cover: 9
  Zero half: 94
  RLT: 69
  BQP: 4

Explored 1 nodes (81741 simplex iterations) in 50.02 seconds (48.80 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 5 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.900000000000e+01, gap 716.6667%

Wrote result file './lp_solutions/grafo3321.38.sol'

