
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:49:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7657.41.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/grafo7657.41.lp
Reading time = 0.16 seconds
: 101833 rows, 2455 columns, 307701 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 101833 rows, 2455 columns and 307701 nonzeros
Model fingerprint: 0xc8c27bd8
Variable types: 51 continuous, 2404 integer (2404 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 22502 rows and 24 columns
Presolve time: 0.71s
Presolved: 79331 rows, 2431 columns, 240555 nonzeros
Variable types: 0 continuous, 2431 integer (2380 binary)
Root relaxation presolved: 2431 rows, 81762 columns, 242986 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22283    5.3737557e+01   0.000000e+00   1.513959e+04      5s
   44645    5.4000000e+01   0.000000e+00   0.000000e+00     10s
   44645    5.4000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.400000e+01, 44645 iterations, 8.75 seconds (6.92 work units)
Total elapsed time = 24.55s (DegenMoves)
Total elapsed time = 30.23s (DegenMoves)

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

     0     0   54.00000    0  839          -   54.00000      -     -   35s
H    0     0                       2.0000000   54.00000  2600%     -   46s
     0     0          -    0         2.00000   54.00000  2600%     -   50s

Cutting planes:
  Gomory: 23
  Cover: 25
  Clique: 26
  MIR: 195
  GUB cover: 3
  Zero half: 22
  RLT: 59
  BQP: 10

Explored 1 nodes (69520 simplex iterations) in 50.02 seconds (49.44 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 2 

Time limit reached
Best objective 2.000000000000e+00, best bound 5.400000000000e+01, gap 2600.0000%

Wrote result file './lp_solutions/grafo7657.41.sol'

