
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:51:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7209.40.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/grafo7209.40.lp
Reading time = 0.33 seconds
: 172840 rows, 2365 columns, 520610 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 172840 rows, 2365 columns and 520610 nonzeros
Model fingerprint: 0x33b4805a
Variable types: 48 continuous, 2317 integer (2317 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 2.0000000
Presolve removed 64836 rows and 20 columns
Presolve time: 1.53s
Presolved: 108004 rows, 2345 columns, 326427 nonzeros
Variable types: 0 continuous, 2345 integer (2297 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2342 rows, 110346 columns, 328772 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17253    5.2007623e+01   0.000000e+00   2.362987e+05      5s
   35317    5.1947614e+01   0.000000e+00   9.208250e+04     10s
   54127    5.1933274e+01   0.000000e+00   1.333850e+04     15s
   72442    5.1929361e+01   0.000000e+00   4.170440e+02     20s
   79473    5.2000000e+01   0.000000e+00   0.000000e+00     22s
   79473    5.2000000e+01   0.000000e+00   0.000000e+00     22s
   79473    5.2000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.200000e+01, 79473 iterations, 20.27 seconds (12.91 work units)
Total elapsed time = 40.38s (DegenMoves)

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

     0     0   52.00000    0  637    5.00000   52.00000   940%     -   45s
H    0     0                       7.0000000   52.00000   643%     -   45s
     0     0          -    0         7.00000   52.00000   643%     -   50s

Cutting planes:
  Gomory: 38
  Cover: 53
  Clique: 30
  MIR: 137
  GUB cover: 3
  Zero half: 94
  RLT: 85
  BQP: 6

Explored 1 nodes (92757 simplex iterations) in 50.04 seconds (38.77 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 7 5 2 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.200000000000e+01, gap 642.8571%

Wrote result file './lp_solutions/grafo7209.40.sol'

