
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:49:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5297.44.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/grafo5297.44.lp
Reading time = 0.25 seconds
: 155895 rows, 3034 columns, 470517 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 155895 rows, 3034 columns and 470517 nonzeros
Model fingerprint: 0xdf43cf60
Variable types: 57 continuous, 2977 integer (2977 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 -0.0000000
Presolve removed 40758 rows and 30 columns
Presolve time: 1.13s
Presolved: 115137 rows, 3004 columns, 348816 nonzeros
Variable types: 0 continuous, 3004 integer (2947 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2998 rows, 118135 columns, 351820 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16138    7.0779165e+01   0.000000e+00   1.775311e+05      5s
   33950    6.9701271e+01   0.000000e+00   2.895828e+04     10s
   51747    6.9682160e+01   0.000000e+00   7.888178e+04     15s
   69063    6.9675933e+01   0.000000e+00   1.046087e+03     20s
   84058    7.0000000e+01   0.000000e+00   0.000000e+00     24s
   84058    7.0000000e+01   0.000000e+00   0.000000e+00     24s
   84058    7.0000000e+01   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 7.000000e+01, 84058 iterations, 23.23 seconds (17.99 work units)

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

     0     0   70.00000    0 1809    8.00000   70.00000   775%     -   50s

Explored 1 nodes (96801 simplex iterations) in 50.05 seconds (42.96 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 7.000000000000e+01, gap 775.0000%

Wrote result file './lp_solutions/grafo5297.44.sol'

