
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 03:29:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1423.33.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/grafo1423.33.lp
Reading time = 0.40 seconds
: 250427 rows, 2605 columns, 754027 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 250427 rows, 2605 columns and 754027 nonzeros
Model fingerprint: 0xfb0d5042
Variable types: 55 continuous, 2550 integer (2550 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 -0.0000000
Presolve removed 103010 rows and 18 columns
Presolve time: 1.80s
Presolved: 147417 rows, 2587 columns, 445498 nonzeros
Variable types: 0 continuous, 2587 integer (2532 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2578 rows, 149995 columns, 448085 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14413    1.3100227e+02   0.000000e+00   1.648790e+05      5s
   36258    7.4902184e+01   0.000000e+00   3.284400e+05     10s
   55180    7.1777613e+01   0.000000e+00   1.056995e+05     15s
   75144    7.1734571e+01   0.000000e+00   2.811985e+04     20s
   95759    7.1720555e+01   0.000000e+00   5.170419e+03     25s
  111301    7.2000000e+01   0.000000e+00   0.000000e+00     29s
  111301    7.2000000e+01   0.000000e+00   0.000000e+00     29s
  111301    7.2000000e+01   0.000000e+00   0.000000e+00     29s

Root relaxation: objective 7.200000e+01, 111301 iterations, 27.26 seconds (20.58 work units)

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

     0     0   72.00000    0 1376   12.00000   72.00000   500%     -   50s

Explored 1 nodes (119691 simplex iterations) in 50.04 seconds (42.25 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 -0 

Time limit reached
Best objective 1.200000000000e+01, best bound 7.200000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo1423.33.sol'

