
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:49:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7601.48.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/grafo7601.48.lp
Reading time = 0.45 seconds
: 238954 rows, 3314 columns, 719990 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 238954 rows, 3314 columns and 719990 nonzeros
Model fingerprint: 0x8f0606a6
Variable types: 59 continuous, 3255 integer (3255 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 4.0000000
Presolve removed 75492 rows and 37 columns
Presolve time: 2.62s
Presolved: 163462 rows, 3277 columns, 493918 nonzeros
Variable types: 0 continuous, 3277 integer (3218 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 3277 rows, 166739 columns, 497195 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    9031    8.5875839e+01   0.000000e+00   1.729787e+06      5s
   24033    5.8916648e+01   0.000000e+00   1.409407e+05     10s
   36368    5.8827129e+01   0.000000e+00   1.338138e+05     15s
   49708    5.8745813e+01   0.000000e+00   4.056908e+04     20s
   62305    5.8710072e+01   0.000000e+00   5.914407e+04     25s
   74239    5.8695443e+01   0.000000e+00   6.088810e+04     30s
   86173    5.8687182e+01   0.000000e+00   3.880992e+04     35s
   97444    5.8682832e+01   0.000000e+00   2.469219e+04     40s
  109378    5.8680289e+01   0.000000e+00   1.613563e+02     45s

Root relaxation: time limit, 120742 iterations, 47.09 seconds (26.17 work units)

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

     0     0          -    0         8.00000  285.00000  3462%     -   50s

Explored 1 nodes (120742 simplex iterations) in 50.02 seconds (28.34 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 4 

Time limit reached
Best objective 8.000000000000e+00, best bound 2.850000000000e+02, gap 3462.5000%

Wrote result file './lp_solutions/grafo7601.48.sol'

