
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:43:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9957.39.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/grafo9957.39.lp
Reading time = 0.12 seconds
: 73313 rows, 2200 columns, 221903 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 73313 rows, 2200 columns and 221903 nonzeros
Model fingerprint: 0xa8cb873e
Variable types: 48 continuous, 2152 integer (2152 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 11964 rows and 28 columns
Presolve time: 0.48s
Presolved: 61349 rows, 2172 columns, 186477 nonzeros
Variable types: 0 continuous, 2172 integer (2124 binary)
Root relaxation presolved: 2172 rows, 63521 columns, 188649 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25746    4.3936037e+01   0.000000e+00   5.496352e+03      5s
   48833    4.4000000e+01   0.000000e+00   0.000000e+00     10s
   48833    4.4000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.400000e+01, 48833 iterations, 9.18 seconds (7.47 work units)
Total elapsed time = 23.71s (DegenMoves)
Total elapsed time = 25.81s (DegenMoves)
Total elapsed time = 30.10s (DegenMoves)

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

     0     0   44.00000    0  738          -   44.00000      -     -   30s
H    0     0                       4.0000000   44.00000  1000%     -   36s
     0     0          -    0         4.00000   44.00000  1000%     -   50s

Cutting planes:
  Gomory: 14
  Cover: 10
  Clique: 9
  MIR: 100
  StrongCG: 3
  GUB cover: 4
  Zero half: 98
  RLT: 50
  BQP: 3

Explored 1 nodes (78585 simplex iterations) in 50.05 seconds (46.32 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 4.400000000000e+01, gap 1000.0000%

Wrote result file './lp_solutions/grafo9957.39.sol'

