
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:54:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7192.45.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/grafo7192.45.lp
Reading time = 0.29 seconds
: 179258 rows, 2769 columns, 540206 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 179258 rows, 2769 columns and 540206 nonzeros
Model fingerprint: 0xccb96502
Variable types: 52 continuous, 2717 integer (2717 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]
Presolve removed 64816 rows and 31 columns
Presolve time: 1.23s
Presolved: 114442 rows, 2738 columns, 346271 nonzeros
Variable types: 0 continuous, 2738 integer (2686 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2738 rows, 117180 columns, 349009 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18326    6.1989794e+01   0.000000e+00   1.251523e+05      5s
   39529    5.5949133e+01   0.000000e+00   3.864145e+04     10s
   59689    5.5939490e+01   0.000000e+00   4.811665e+03     15s
   79345    5.5938094e+01   0.000000e+00   1.496343e+01     20s
   86547    5.6000000e+01   0.000000e+00   0.000000e+00     22s
   86547    5.6000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.600000e+01, 86547 iterations, 20.44 seconds (17.69 work units)
Total elapsed time = 46.71s (DegenMoves)

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

     0     0   56.00000    0  627    8.00000   56.00000   600%     -   49s
H    0     0                       9.0000000   56.00000   522%     -   49s

Cutting planes:
  Cover: 51
  Clique: 39
  MIR: 276
  GUB cover: 9

Explored 1 nodes (103433 simplex iterations) in 50.03 seconds (48.43 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 8 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.600000000000e+01, gap 522.2222%

Wrote result file './lp_solutions/grafo7192.45.sol'

