
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:42:09 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6455.39.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/grafo6455.39.lp
Reading time = 0.14 seconds
: 88317 rows, 2145 columns, 266809 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 88317 rows, 2145 columns and 266809 nonzeros
Model fingerprint: 0x27fdb0c1
Variable types: 47 continuous, 2098 integer (2098 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 21845 rows and 34 columns
Presolve time: 0.63s
Presolved: 66472 rows, 2111 columns, 201688 nonzeros
Variable types: 0 continuous, 2111 integer (2064 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2111 rows, 68583 columns, 203799 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24768    4.5933422e+01   0.000000e+00   2.791534e+04      5s
   50698    4.5918752e+01   0.000000e+00   5.378406e+03     10s
   64640    4.6000000e+01   0.000000e+00   0.000000e+00     13s
   64640    4.6000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.600000e+01, 64640 iterations, 11.99 seconds (10.10 work units)
Total elapsed time = 25.69s (DegenMoves)

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

     0     0   46.00000    0  513    5.00000   46.00000   820%     -   30s
H    0     0                       8.0000000   46.00000   475%     -   30s
H    0     0                       9.0000000   46.00000   411%     -   32s
     0     0   46.00000    0  805    9.00000   46.00000   411%     -   42s
     0     0   46.00000    0  681    9.00000   46.00000   411%     -   46s

Cutting planes:
  Gomory: 5
  Lift-and-project: 34
  Cover: 30
  Clique: 11
  MIR: 165
  StrongCG: 2
  GUB cover: 2
  Zero half: 58
  RLT: 51
  BQP: 2

Explored 1 nodes (93094 simplex iterations) in 50.23 seconds (47.30 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 5 2 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.600000000000e+01, gap 411.1111%

Wrote result file './lp_solutions/grafo6455.39.sol'

