
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:25:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7091.44.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/grafo7091.44.lp
Reading time = 0.20 seconds
: 128454 rows, 2384 columns, 387240 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 128454 rows, 2384 columns and 387240 nonzeros
Model fingerprint: 0x8a49ab43
Variable types: 47 continuous, 2337 integer (2337 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 39487 rows and 24 columns
Presolve time: 0.97s
Presolved: 88967 rows, 2360 columns, 269095 nonzeros
Variable types: 0 continuous, 2360 integer (2313 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2360 rows, 91327 columns, 271455 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23866    4.9846380e+01   0.000000e+00   1.217151e+05      5s
   35608    5.0000000e+01   0.000000e+00   0.000000e+00      7s
   35608    5.0000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 5.000000e+01, 35608 iterations, 6.24 seconds (5.30 work units)
Total elapsed time = 17.02s (DegenMoves)
Total elapsed time = 20.03s (DegenMoves)

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

     0     0   50.00000    0  517    9.00000   50.00000   456%     -   21s
H    0     0                      12.0000000   50.00000   317%     -   21s
     0     0   50.00000    0  887   12.00000   50.00000   317%     -   37s
     0     0   50.00000    0  748   12.00000   50.00000   317%     -   40s
     0     0          -    0        12.00000   50.00000   317%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 34
  Cover: 23
  Clique: 30
  MIR: 123
  GUB cover: 2
  Zero half: 26
  RLT: 89
  BQP: 3

Explored 1 nodes (61309 simplex iterations) in 50.02 seconds (52.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 9 

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

Wrote result file './lp_solutions/grafo7091.44.sol'

