
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:45:39 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3450.43.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/grafo3450.43.lp
Reading time = 0.25 seconds
: 140556 rows, 2209 columns, 423372 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 140556 rows, 2209 columns and 423372 nonzeros
Model fingerprint: 0xacecf5bf
Variable types: 44 continuous, 2165 integer (2165 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 2.0000000
Presolve removed 48699 rows and 23 columns
Presolve time: 1.37s
Presolved: 91857 rows, 2186 columns, 277511 nonzeros
Variable types: 0 continuous, 2186 integer (2142 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2186 rows, 94043 columns, 279697 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17512    4.1896244e+01   0.000000e+00   7.863874e+04      5s
   39026    4.1804605e+01   0.000000e+00   6.537881e+03     10s
   57842    4.1797652e+01   0.000000e+00   2.688750e+01     15s
   60502    4.2000000e+01   0.000000e+00   0.000000e+00     16s
   60502    4.2000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.200000e+01, 60502 iterations, 14.31 seconds (8.80 work units)
Total elapsed time = 31.48s (DegenMoves)
Total elapsed time = 35.24s (DegenMoves)

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

     0     0   42.00000    0  547    9.00000   42.00000   367%     -   35s
     0     0          -    0         9.00000   42.00000   367%     -   50s

Cutting planes:
  Gomory: 34
  Cover: 36
  Clique: 32
  MIR: 130
  StrongCG: 1
  GUB cover: 4
  Zero half: 92
  RLT: 50
  BQP: 2

Explored 1 nodes (80900 simplex iterations) in 50.02 seconds (40.68 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 2 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.200000000000e+01, gap 366.6667%

Wrote result file './lp_solutions/grafo3450.43.sol'

