
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:28:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7212.42.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/grafo7212.42.lp
Reading time = 0.22 seconds
: 122588 rows, 2532 columns, 370058 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 122588 rows, 2532 columns and 370058 nonzeros
Model fingerprint: 0xdb029057
Variable types: 49 continuous, 2483 integer (2483 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 36057 rows and 19 columns
Presolve time: 1.06s
Presolved: 86531 rows, 2513 columns, 262560 nonzeros
Variable types: 0 continuous, 2513 integer (2464 binary)
Root relaxation presolved: 2510 rows, 89041 columns, 265073 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16577    4.5973116e+01   0.000000e+00   2.128414e+05      5s
   35239    4.5937558e+01   0.000000e+00   2.316915e+04     10s
   52832    4.5929958e+01   0.000000e+00   8.391341e+02     15s
   62003    4.6000000e+01   0.000000e+00   0.000000e+00     18s
   62003    4.6000000e+01   0.000000e+00   0.000000e+00     18s
   62003    4.6000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 4.600000e+01, 62003 iterations, 16.69 seconds (12.01 work units)
Total elapsed time = 30.51s (DegenMoves)

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

     0     0   46.00000    0  410          -   46.00000      -     -   31s
H    0     0                      12.0000000   46.00000   283%     -   31s
     0     0   46.00000    0  835   12.00000   46.00000   283%     -   49s

Cutting planes:
  Gomory: 2
  Cover: 3
  Clique: 9
  MIR: 39
  Zero half: 7
  RLT: 15

Explored 1 nodes (82245 simplex iterations) in 50.03 seconds (40.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 12 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.600000000000e+01, gap 283.3333%

Wrote result file './lp_solutions/grafo7212.42.sol'

