
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:22:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7313.43.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/grafo7313.43.lp
Reading time = 0.13 seconds
: 78693 rows, 2153 columns, 237669 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 78693 rows, 2153 columns and 237669 nonzeros
Model fingerprint: 0xa52fe368
Variable types: 43 continuous, 2110 integer (2110 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 2.0000000
Presolve removed 16708 rows and 19 columns
Presolve time: 0.51s
Presolved: 61985 rows, 2134 columns, 188053 nonzeros
Variable types: 0 continuous, 2134 integer (2091 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2134 rows, 64119 columns, 190187 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27304    3.7818445e+01   0.000000e+00   1.028703e+03      5s
   39215    3.8000000e+01   0.000000e+00   0.000000e+00      7s
   39215    3.8000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 3.800000e+01, 39215 iterations, 6.72 seconds (5.08 work units)
Total elapsed time = 13.24s (DegenMoves)

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

     0     0   38.00000    0  399    5.00000   38.00000   660%     -   14s
H    0     0                       7.0000000   38.00000   443%     -   14s
H    0     0                       8.0000000   38.00000   375%     -   14s
     0     0   38.00000    0  758    8.00000   38.00000   375%     -   23s
H    0     0                       9.0000000   38.00000   322%     -   23s
     0     0   38.00000    0  662    9.00000   38.00000   322%     -   24s
     0     0   38.00000    0  696    9.00000   38.00000   322%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 1
  Cover: 16
  Clique: 13
  MIR: 101
  StrongCG: 1
  GUB cover: 2
  Zero half: 66
  RLT: 57

Explored 1 nodes (77001 simplex iterations) in 50.09 seconds (46.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 9 8 7 ... 2

Time limit reached
Best objective 9.000000000000e+00, best bound 3.800000000000e+01, gap 322.2222%

Wrote result file './lp_solutions/grafo7313.43.sol'

