
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:56:39 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6276.44.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/grafo6276.44.lp
Reading time = 0.29 seconds
: 185461 rows, 3032 columns, 559292 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 185461 rows, 3032 columns and 559292 nonzeros
Model fingerprint: 0x18f9138c
Variable types: 57 continuous, 2975 integer (2975 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]
Presolve removed 56551 rows and 9 columns
Presolve time: 1.22s
Presolved: 128910 rows, 3023 columns, 390049 nonzeros
Variable types: 0 continuous, 3023 integer (2966 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 3010 rows, 131920 columns, 393072 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15892    7.8326853e+01   0.000000e+00   1.245403e+05      5s
   32755    6.6942914e+01   0.000000e+00   2.713279e+04     10s
   49357    6.6922735e+01   0.000000e+00   4.859219e+04     15s
   65981    6.6912589e+01   0.000000e+00   1.442702e+04     20s
   82266    6.6907007e+01   0.000000e+00   6.083640e+03     25s
   98574    6.6903872e+01   0.000000e+00   2.368847e+04     30s
  114815    6.6902248e+01   0.000000e+00   1.662537e+03     35s
  126559    6.7000000e+01   0.000000e+00   0.000000e+00     38s
  126559    6.7000000e+01   0.000000e+00   0.000000e+00     39s
  126559    6.7000000e+01   0.000000e+00   0.000000e+00     39s

Root relaxation: objective 6.700000e+01, 126559 iterations, 37.02 seconds (32.19 work units)

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

     0     0   67.00000    0 2005    7.00000   67.00000   857%     -   50s

Explored 1 nodes (131380 simplex iterations) in 50.04 seconds (45.51 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 6.700000000000e+01, gap 857.1429%

Wrote result file './lp_solutions/grafo6276.44.sol'

