
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:11:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5328.41.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/grafo5328.41.lp
Reading time = 0.17 seconds
: 98111 rows, 2240 columns, 296182 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 98111 rows, 2240 columns and 296182 nonzeros
Model fingerprint: 0x9cc90b6f
Variable types: 46 continuous, 2194 integer (2194 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 26542 rows and 22 columns
Presolve time: 0.69s
Presolved: 71569 rows, 2218 columns, 216988 nonzeros
Variable types: 0 continuous, 2218 integer (2172 binary)
Root relaxation presolved: 2218 rows, 73787 columns, 219206 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25606    4.9786233e+01   0.000000e+00   3.450227e+03      5s
   42711    5.0000000e+01   0.000000e+00   0.000000e+00      8s
   42711    5.0000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 5.000000e+01, 42711 iterations, 7.45 seconds (5.72 work units)
Total elapsed time = 16.97s (DegenMoves)

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

     0     0   50.00000    0  466          -   50.00000      -     -   20s
H    0     0                       8.0000000   50.00000   525%     -   20s
H    0     0                       9.0000000   50.00000   456%     -   20s
H    0     0                      10.0000000   50.00000   400%     -   21s
     0     0   50.00000    0  649   10.00000   50.00000   400%     -   27s
H    0     0                      11.0000000   50.00000   355%     -   28s
H    0     0                      12.0000000   50.00000   317%     -   30s
     0     0   50.00000    0  630   12.00000   50.00000   317%     -   30s
     0     0   50.00000    0  661   12.00000   50.00000   317%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 23
  Cover: 15
  Clique: 17
  MIR: 96
  StrongCG: 1
  GUB cover: 1
  Zero half: 134
  RLT: 55
  BQP: 1

Explored 1 nodes (76517 simplex iterations) in 50.11 seconds (46.60 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 12 11 10 ... 8

Time limit reached
Best objective 1.200000000000e+01, best bound 5.000000000000e+01, gap 316.6667%

Wrote result file './lp_solutions/grafo5328.41.sol'

