
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 02:40:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2045.28.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/grafo2045.28.lp
Reading time = 0.91 seconds
: 566498 rows, 2145 columns, 1701691 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 566498 rows, 2145 columns and 1701691 nonzeros
Model fingerprint: 0xe0697c5a
Variable types: 47 continuous, 2098 integer (2098 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 -0.0000000
Presolve removed 282595 rows and 1 columns
Presolve time: 3.92s
Presolved: 283903 rows, 2144 columns, 854217 nonzeros
Variable types: 0 continuous, 2144 integer (2097 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2127 rows, 286030 columns, 856361 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    7.9222222e+02   0.000000e+00   9.558922e+05      5s
   40068    1.1056507e+02   0.000000e+00   5.972555e+06     11s
   60389    8.4989312e+01   0.000000e+00   1.203355e+06     15s
   80560    6.6986815e+01   0.000000e+00   7.644627e+04     20s
  105515    6.4979237e+01   0.000000e+00   1.238182e+05     25s
  131113    6.4965243e+01   0.000000e+00   2.049308e+04     30s
  158005    6.4950030e+01   0.000000e+00   1.238981e+04     35s
  186031    6.4945149e+01   0.000000e+00   1.048778e+03     40s
  203732    6.5000000e+01   0.000000e+00   0.000000e+00     43s
  203732    6.5000000e+01   0.000000e+00   0.000000e+00     44s
  203732    6.5000000e+01   0.000000e+00   0.000000e+00     44s

Root relaxation: objective 6.500000e+01, 203732 iterations, 39.27 seconds (29.25 work units)

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

     0     0   65.00000    0 1321    9.00000   65.00000   622%     -   50s

Explored 1 nodes (206153 simplex iterations) in 50.13 seconds (40.14 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.500000000000e+01, gap 622.2222%

Wrote result file './lp_solutions/grafo2045.28.sol'

