
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:23:55 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2503.40.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/grafo2503.40.lp
Reading time = 0.49 seconds
: 222192 rows, 2821 columns, 669346 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 222192 rows, 2821 columns and 669346 nonzeros
Model fingerprint: 0x66d2584b
Variable types: 55 continuous, 2766 integer (2766 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, 6e+01]
Found heuristic solution: objective 1.0000000
Presolve removed 82592 rows and 28 columns
Presolve time: 2.44s
Presolved: 139600 rows, 2793 columns, 422110 nonzeros
Variable types: 0 continuous, 2793 integer (2738 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2793 rows, 142393 columns, 424903 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8423    1.2381164e+02   0.000000e+00   1.430177e+05      5s
   22691    7.0947885e+01   0.000000e+00   3.487043e+05     10s
   35151    6.3854537e+01   0.000000e+00   4.097872e+05     15s
   48061    6.3785585e+01   0.000000e+00   4.180402e+04     20s
   60915    6.3757058e+01   0.000000e+00   2.931876e+04     25s
   71931    6.3745420e+01   0.000000e+00   8.854063e+03     30s
   83559    6.3738439e+01   0.000000e+00   3.450287e+03     35s
   95187    6.3735105e+01   0.000000e+00   9.322997e+02     40s
  106815    6.3733970e+01   0.000000e+00   4.761802e+00     45s
  107731    6.4000000e+01   0.000000e+00   0.000000e+00     46s
  107731    6.4000000e+01   0.000000e+00   0.000000e+00     46s

Root relaxation: objective 6.400000e+01, 107731 iterations, 42.87 seconds (20.56 work units)

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

     0     0   64.00000    0 1475    8.00000   64.00000   700%     -   50s

Explored 1 nodes (108651 simplex iterations) in 50.09 seconds (25.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 6.400000000000e+01, gap 700.0000%

Wrote result file './lp_solutions/grafo2503.40.sol'

