
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:13:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5817.42.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/grafo5817.42.lp
Reading time = 0.32 seconds
: 197644 rows, 3002 columns, 595915 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 197644 rows, 3002 columns and 595915 nonzeros
Model fingerprint: 0xed55c345
Variable types: 57 continuous, 2945 integer (2945 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, 6e+01]
Found heuristic solution: objective 2.0000000
Presolve removed 65408 rows and 25 columns
Presolve time: 1.47s
Presolved: 132236 rows, 2977 columns, 400335 nonzeros
Variable types: 0 continuous, 2977 integer (2920 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2971 rows, 135207 columns, 403312 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16539    7.5448250e+01   0.000000e+00   3.164652e+05      5s
   34438    6.3673787e+01   0.000000e+00   7.981210e+04     10s
   52198    6.3646121e+01   0.000000e+00   2.494135e+04     15s
   68848    6.3641048e+01   0.000000e+00   2.963910e+02     20s
   72213    6.4000000e+01   0.000000e+00   0.000000e+00     21s
   72213    6.4000000e+01   0.000000e+00   0.000000e+00     21s
   72213    6.4000000e+01   0.000000e+00   0.000000e+00     21s

Root relaxation: objective 6.400000e+01, 72213 iterations, 19.60 seconds (16.16 work units)

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

     0     0   64.00000    0 1514   12.00000   64.00000   433%     -   50s

Explored 1 nodes (84277 simplex iterations) in 50.04 seconds (44.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 2 

Time limit reached
Best objective 1.200000000000e+01, best bound 6.400000000000e+01, gap 433.3333%

Wrote result file './lp_solutions/grafo5817.42.sol'

