
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 08:59:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7645.37.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/grafo7645.37.lp
Reading time = 0.13 seconds
: 79089 rows, 2181 columns, 239237 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 79089 rows, 2181 columns and 239237 nonzeros
Model fingerprint: 0x5b10e670
Variable types: 49 continuous, 2132 integer (2132 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 16127 rows and 42 columns
Presolve time: 0.54s
Presolved: 62962 rows, 2139 columns, 191356 nonzeros
Variable types: 0 continuous, 2139 integer (2090 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2139 rows, 65101 columns, 193495 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22961    5.1726793e+01   0.000000e+00   1.339470e+04      5s
   47303    5.1713866e+01   0.000000e+00   3.978167e+02     10s
   54295    5.2000000e+01   0.000000e+00   0.000000e+00     12s
   54295    5.2000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 5.200000e+01, 54295 iterations, 10.91 seconds (9.20 work units)
Total elapsed time = 26.66s (DegenMoves)
Total elapsed time = 30.91s (DegenMoves)

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

     0     0   52.00000    0  690    6.00000   52.00000   767%     -   31s
H    0     0                       7.0000000   52.00000   643%     -   31s
H    0     0                       8.0000000   52.00000   550%     -   34s
H    0     0                       9.0000000   52.00000   478%     -   46s
     0     0   52.00000    0  916    9.00000   52.00000   478%     -   46s
     0     0          -    0         9.00000   52.00000   478%     -   50s

Cutting planes:
  Gomory: 4
  MIR: 152
  Zero half: 14
  RLT: 39

Explored 1 nodes (82555 simplex iterations) in 50.30 seconds (46.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 9 8 7 ... -0

Time limit reached
Best objective 9.000000000000e+00, best bound 5.200000000000e+01, gap 477.7778%

Wrote result file './lp_solutions/grafo7645.37.sol'

