
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:38:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1424.47.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/grafo1424.47.lp
Reading time = 0.23 seconds
: 121018 rows, 2806 columns, 365441 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 121018 rows, 2806 columns and 365441 nonzeros
Model fingerprint: 0x270722dc
Variable types: 52 continuous, 2754 integer (2754 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 4.0000000
Presolve removed 25283 rows and 1 columns
Presolve time: 1.83s
Presolved: 95735 rows, 2805 columns, 289979 nonzeros
Variable types: 0 continuous, 2805 integer (2753 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2784 rows, 98519 columns, 292784 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14187    5.5947030e+01   0.000000e+00   6.821671e+04      5s
   32803    5.5918051e+01   0.000000e+00   1.509033e+04     10s
   48247    5.5911202e+01   0.000000e+00   1.302638e+03     15s
   57751    5.5910012e+01   0.000000e+00   7.208451e+01     20s
   61592    5.6000000e+01   0.000000e+00   0.000000e+00     22s
   61592    5.6000000e+01   0.000000e+00   0.000000e+00     22s
   61592    5.6000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.600000e+01, 61592 iterations, 19.71 seconds (12.69 work units)
Total elapsed time = 39.14s (DegenMoves)
Total elapsed time = 40.51s (DegenMoves)

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

     0     0   56.00000    0  457   11.00000   56.00000   409%     -   41s
     0     0          -    0        11.00000   56.00000   409%     -   50s

Cutting planes:
  Gomory: 36
  Cover: 45
  Clique: 15
  MIR: 257
  Zero half: 91
  RLT: 74
  BQP: 2

Explored 1 nodes (74891 simplex iterations) in 50.04 seconds (29.66 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 4 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.600000000000e+01, gap 409.0909%

Wrote result file './lp_solutions/grafo1424.47.sol'

