
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:05:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6947.44.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/grafo6947.44.lp
Reading time = 0.25 seconds
: 120558 rows, 2585 columns, 363908 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 120558 rows, 2585 columns and 363908 nonzeros
Model fingerprint: 0x848593d3
Variable types: 51 continuous, 2534 integer (2534 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 29384 rows and 31 columns
Presolve time: 0.89s
Presolved: 91174 rows, 2554 columns, 276138 nonzeros
Variable types: 0 continuous, 2554 integer (2503 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2554 rows, 93728 columns, 278692 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22218    5.0745122e+01   0.000000e+00   1.028428e+04      5s
   39778    5.1000000e+01   0.000000e+00   0.000000e+00      9s
   39778    5.1000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 5.100000e+01, 39778 iterations, 7.93 seconds (6.60 work units)
Total elapsed time = 22.18s (DegenMoves)

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

     0     0   51.00000    0  670   11.00000   51.00000   364%     -   23s
H    0     0                      12.0000000   51.00000   325%     -   23s
     0     0          -    0        12.00000   51.00000   325%     -   50s

Cutting planes:
  Gomory: 30
  Cover: 34
  Clique: 14
  MIR: 138
  StrongCG: 1
  GUB cover: 7
  Zero half: 14
  RLT: 56
  BQP: 2

Explored 1 nodes (64848 simplex iterations) in 50.02 seconds (48.65 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 11 2 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.100000000000e+01, gap 325.0000%

Wrote result file './lp_solutions/grafo6947.44.sol'

