
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:00:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3749.42.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/grafo3749.42.lp
Reading time = 0.15 seconds
: 96115 rows, 2211 columns, 290091 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 96115 rows, 2211 columns and 290091 nonzeros
Model fingerprint: 0xdd3150d2
Variable types: 45 continuous, 2166 integer (2166 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 25348 rows and 23 columns
Presolve time: 0.69s
Presolved: 70767 rows, 2188 columns, 214452 nonzeros
Variable types: 0 continuous, 2188 integer (2143 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2188 rows, 72955 columns, 216640 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27109    4.3775214e+01   0.000000e+00   3.192293e+03      5s
   30185    4.4000000e+01   0.000000e+00   0.000000e+00      6s
   30185    4.4000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.400000e+01, 30185 iterations, 4.77 seconds (4.00 work units)
Total elapsed time = 12.27s (DegenMoves)

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

     0     0   44.00000    0  416    7.00000   44.00000   529%     -   14s
H    0     0                       8.0000000   44.00000   450%     -   14s
     0     0   44.00000    0  766    8.00000   44.00000   450%     -   25s
     0     0   44.00000    0  737    8.00000   44.00000   450%     -   27s
     0     0   44.00000    0  773    8.00000   44.00000   450%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 26
  Cover: 6
  Clique: 14
  MIR: 83
  Zero half: 47
  RLT: 40
  BQP: 3

Explored 1 nodes (63088 simplex iterations) in 50.09 seconds (43.96 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

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

Wrote result file './lp_solutions/grafo3749.42.sol'

