
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:57:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3462.42.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/grafo3462.42.lp
Reading time = 0.12 seconds
: 73811 rows, 2236 columns, 223284 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 73811 rows, 2236 columns and 223284 nonzeros
Model fingerprint: 0x0e222fec
Variable types: 47 continuous, 2189 integer (2189 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 11832 rows and 0 columns
Presolve time: 0.41s
Presolved: 61979 rows, 2236 columns, 188218 nonzeros
Variable types: 0 continuous, 2236 integer (2189 binary)
Root relaxation presolved: 2191 rows, 64170 columns, 190454 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28556    3.4963794e+01   0.000000e+00   3.117843e+03      5s
   38877    3.5000000e+01   0.000000e+00   0.000000e+00      7s
   38877    3.5000000e+01   0.000000e+00   0.000000e+00      7s
   38877    3.5000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 3.500000e+01, 38877 iterations, 6.46 seconds (5.42 work units)
Total elapsed time = 12.86s (DegenMoves)
Total elapsed time = 15.25s (DegenMoves)

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

     0     0   35.00000    0  553          -   35.00000      -     -   15s
H    0     0                       9.0000000   35.00000   289%     -   15s
H    0     0                      10.0000000   35.00000   250%     -   15s
     0     0   35.00000    0  929   10.00000   35.00000   250%     -   30s
H    0     0                      12.0000000   35.00000   192%     -   31s
     0     0   35.00000    0  813   12.00000   35.00000   192%     -   32s
     0     0   35.00000    0  884   12.00000   35.00000   192%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 7
  Cover: 10
  Clique: 10
  MIR: 98
  Zero half: 57
  RLT: 76
  BQP: 1

Explored 1 nodes (72090 simplex iterations) in 50.08 seconds (42.32 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 9 

Time limit reached
Best objective 1.200000000000e+01, best bound 3.500000000000e+01, gap 191.6667%

Wrote result file './lp_solutions/grafo3462.42.sol'

