
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:59:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3609.42.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/grafo3609.42.lp
Reading time = 0.17 seconds
: 107023 rows, 2455 columns, 323176 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 107023 rows, 2455 columns and 323176 nonzeros
Model fingerprint: 0xfa30a7d9
Variable types: 49 continuous, 2406 integer (2406 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 30699 rows and 50 columns
Presolve time: 0.80s
Presolved: 76324 rows, 2405 columns, 231553 nonzeros
Variable types: 0 continuous, 2405 integer (2356 binary)
Root relaxation presolved: 2405 rows, 78729 columns, 233958 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22098    5.6790028e+01   0.000000e+00   1.460009e+04      5s
   44654    5.7000000e+01   0.000000e+00   0.000000e+00     10s
   44654    5.7000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.700000e+01, 44654 iterations, 8.79 seconds (7.11 work units)
Total elapsed time = 26.70s (DegenMoves)
Total elapsed time = 30.09s (DegenMoves)

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

     0     0   57.00000    0  750          -   57.00000      -     -   30s
H    0     0                       8.0000000   57.00000   612%     -   35s
H    0     0                      11.0000000   57.00000   418%     -   35s
     0     0          -    0        11.00000   57.00000   418%     -   50s

Cutting planes:
  Gomory: 23
  Cover: 40
  Clique: 12
  MIR: 222
  GUB cover: 3
  Zero half: 63
  RLT: 66
  BQP: 3

Explored 1 nodes (72645 simplex iterations) in 50.09 seconds (46.06 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 8 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.700000000000e+01, gap 418.1818%

Wrote result file './lp_solutions/grafo3609.42.sol'

