
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 04:27:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3347.35.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/grafo3347.35.lp
Reading time = 0.44 seconds
: 262977 rows, 1799 columns, 790313 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 262977 rows, 1799 columns and 790313 nonzeros
Model fingerprint: 0xa31ecac0
Variable types: 39 continuous, 1760 integer (1760 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 -0.0000000
Presolve removed 125600 rows and 12 columns
Presolve time: 2.03s
Presolved: 137377 rows, 1787 columns, 413751 nonzeros
Variable types: 0 continuous, 1787 integer (1748 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 1784 rows, 139161 columns, 415538 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    3414    5.6000000e+01   0.000000e+00   0.000000e+00      5s
    3414    5.6000000e+01   0.000000e+00   0.000000e+00      5s
    3414    5.6000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 5.600000e+01, 3414 iterations, 2.87 seconds (3.92 work units)
Total elapsed time = 25.86s (DegenMoves)
Total elapsed time = 32.54s (DegenMoves)
Total elapsed time = 36.99s (DegenMoves)

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

     0     0   56.00000    0  617    6.00000   56.00000   833%     -   38s
     0     0          -    0         6.00000   56.00000   833%     -   50s

Cutting planes:
  Gomory: 27
  Cover: 44
  Clique: 111
  MIR: 121
  StrongCG: 1
  GUB cover: 3
  Zero half: 74
  RLT: 136
  BQP: 20

Explored 1 nodes (21509 simplex iterations) in 50.04 seconds (65.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 -0 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.600000000000e+01, gap 833.3333%

Wrote result file './lp_solutions/grafo3347.35.sol'

