
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:44:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7768.42.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/grafo7768.42.lp
Reading time = 0.10 seconds
: 64515 rows, 2049 columns, 195068 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 64515 rows, 2049 columns and 195068 nonzeros
Model fingerprint: 0x2feabc24
Variable types: 43 continuous, 2006 integer (2006 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 1.0000000
Presolve removed 10155 rows and 25 columns
Presolve time: 0.43s
Presolved: 54360 rows, 2024 columns, 164998 nonzeros
Variable types: 0 continuous, 2024 integer (1981 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2021 rows, 56381 columns, 167022 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   30439    4.2955134e+01   0.000000e+00   1.357405e+03      5s
   40524    4.3000000e+01   0.000000e+00   0.000000e+00      7s
   40524    4.3000000e+01   0.000000e+00   0.000000e+00      7s
   40524    4.3000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.300000e+01, 40524 iterations, 6.29 seconds (4.94 work units)
Total elapsed time = 12.87s (DegenMoves)
Total elapsed time = 20.95s (DegenMoves)

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

     0     0   43.00000    0  480    7.00000   43.00000   514%     -   22s
H    0     0                       9.0000000   43.00000   378%     -   22s
     0     0   43.00000    0  732    9.00000   43.00000   378%     -   30s
     0     0   43.00000    0  784    9.00000   43.00000   378%     -   34s
     0     0   43.00000    0  778    9.00000   43.00000   378%     -   50s

Cutting planes:
  Gomory: 3
  Cover: 14
  MIR: 145
  GUB cover: 2
  Zero half: 74
  RLT: 65

Explored 1 nodes (85025 simplex iterations) in 50.08 seconds (46.31 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.300000000000e+01, gap 377.7778%

Wrote result file './lp_solutions/grafo7768.42.sol'

