
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:16:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6949.43.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/grafo6949.43.lp
Reading time = 0.13 seconds
: 81098 rows, 2225 columns, 245038 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 81098 rows, 2225 columns and 245038 nonzeros
Model fingerprint: 0x37e25305
Variable types: 45 continuous, 2180 integer (2180 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 17384 rows and 28 columns
Presolve time: 0.54s
Presolved: 63714 rows, 2197 columns, 193383 nonzeros
Variable types: 0 continuous, 2197 integer (2152 binary)
Root relaxation presolved: 2194 rows, 65908 columns, 195580 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27692    4.1964381e+01   0.000000e+00   7.419084e+03      5s
   43027    4.2000000e+01   0.000000e+00   0.000000e+00      8s
   43027    4.2000000e+01   0.000000e+00   0.000000e+00      8s
   43027    4.2000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.200000e+01, 43027 iterations, 7.31 seconds (6.16 work units)
Total elapsed time = 15.24s (DegenMoves)

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

     0     0   42.00000    0  554          -   42.00000      -     -   16s
H    0     0                       5.0000000   42.00000   740%     -   19s
H    0     0                       9.0000000   42.00000   367%     -   19s
H    0     0                      11.0000000   42.00000   282%     -   19s
     0     0   42.00000    0  804   11.00000   42.00000   282%     -   28s
H    0     0                      12.0000000   42.00000   250%     -   29s
     0     0   42.00000    0  754   12.00000   42.00000   250%     -   30s
H    0     0                      13.0000000   42.00000   223%     -   47s
     0     0   42.00000    0  455   13.00000   42.00000   223%     -   47s
     0     0   42.00000    0  367   13.00000   42.00000   223%     -   48s
     0     0          -    0        13.00000   42.00000   223%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 30
  Clique: 10
  MIR: 129
  StrongCG: 2
  GUB cover: 5
  Zero half: 43
  RLT: 56

Explored 1 nodes (79674 simplex iterations) in 50.10 seconds (45.35 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 13 12 11 ... 5

Time limit reached
Best objective 1.300000000000e+01, best bound 4.200000000000e+01, gap 223.0769%

Wrote result file './lp_solutions/grafo6949.43.sol'

