
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:25:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6989.42.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/grafo6989.42.lp
Reading time = 0.21 seconds
: 130687 rows, 2522 columns, 394247 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 130687 rows, 2522 columns and 394247 nonzeros
Model fingerprint: 0xd64dc2a4
Variable types: 50 continuous, 2472 integer (2472 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 1.0000000
Presolve removed 38448 rows and 27 columns
Presolve time: 0.97s
Presolved: 92239 rows, 2495 columns, 279454 nonzeros
Variable types: 0 continuous, 2495 integer (2445 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2483 rows, 94722 columns, 281949 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21596    5.1936964e+01   0.000000e+00   8.474574e+04      5s
   44037    5.1915989e+01   0.000000e+00   1.723238e+04     10s
   64845    5.1913041e+01   0.000000e+00   1.290853e+01     15s
   66328    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   66328    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   66328    5.2000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.200000e+01, 66328 iterations, 14.32 seconds (12.15 work units)
Total elapsed time = 32.27s (DegenMoves)
Total elapsed time = 36.86s (DegenMoves)

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

     0     0   52.00000    0  685    7.00000   52.00000   643%     -   37s
H    0     0                       9.0000000   52.00000   478%     -   37s
H    0     0                      11.0000000   52.00000   373%     -   37s
     0     0          -    0        11.00000   52.00000   373%     -   50s

Cutting planes:
  Gomory: 24
  Cover: 33
  Clique: 14
  MIR: 86
  GUB cover: 6
  Zero half: 26
  RLT: 44
  BQP: 1

Explored 1 nodes (88252 simplex iterations) in 50.02 seconds (50.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 11 9 7 1 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.200000000000e+01, gap 372.7273%

Wrote result file './lp_solutions/grafo6989.42.sol'

