
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:55:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3325.42.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/grafo3325.42.lp
Reading time = 0.25 seconds
: 157194 rows, 2253 columns, 473433 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 157194 rows, 2253 columns and 473433 nonzeros
Model fingerprint: 0x7592ca06
Variable types: 45 continuous, 2208 integer (2208 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 57641 rows and 9 columns
Presolve time: 1.00s
Presolved: 99553 rows, 2244 columns, 300786 nonzeros
Variable types: 0 continuous, 2244 integer (2199 binary)
Root relaxation presolved: 2232 rows, 101785 columns, 303030 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23918    4.4793889e+01   0.000000e+00   2.047907e+04      5s
   39472    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   39472    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   39472    4.5000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.500000e+01, 39472 iterations, 6.67 seconds (5.68 work units)
Total elapsed time = 18.53s (DegenMoves)

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

     0     0   45.00000    0  605          -   45.00000      -     -   39s
H    0     0                       7.0000000   45.00000   543%     -   39s
     0     0          -    0         7.00000   45.00000   543%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 32
  Clique: 29
  MIR: 77
  GUB cover: 2
  Zero half: 15
  RLT: 44
  BQP: 6

Explored 1 nodes (66193 simplex iterations) in 50.02 seconds (67.28 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.500000000000e+01, gap 542.8571%

Wrote result file './lp_solutions/grafo3325.42.sol'

