
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 04:24:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3093.35.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/grafo3093.35.lp
Reading time = 0.51 seconds
: 308361 rows, 1965 columns, 926793 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 308361 rows, 1965 columns and 926793 nonzeros
Model fingerprint: 0xa073653f
Variable types: 43 continuous, 1922 integer (1922 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 144259 rows and 12 columns
Presolve time: 2.28s
Presolved: 164102 rows, 1953 columns, 494371 nonzeros
Variable types: 0 continuous, 1953 integer (1910 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1944 rows, 166046 columns, 496324 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    3457    4.3761955e+01   3.339953e+04   0.000000e+00      5s
    3692    4.4000000e+01   0.000000e+00   0.000000e+00      6s
    3692    4.4000000e+01   0.000000e+00   0.000000e+00      6s
    3692    4.4000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.400000e+01, 3692 iterations, 3.19 seconds (4.17 work units)
Total elapsed time = 21.31s (DegenMoves)
Total elapsed time = 25.68s (DegenMoves)

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

     0     0   44.00000    0  437    7.00000   44.00000   529%     -   29s
H    0     0                       8.0000000   44.00000   450%     -   29s
     0     0          -    0         8.00000   44.00000   450%     -   50s

Cutting planes:
  Gomory: 23
  Cover: 39
  Clique: 31
  MIR: 112
  StrongCG: 2
  GUB cover: 2
  Zero half: 58
  RLT: 84
  BQP: 6

Explored 1 nodes (20367 simplex iterations) in 50.03 seconds (62.06 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.400000000000e+01, gap 450.0000%

Wrote result file './lp_solutions/grafo3093.35.sol'

