
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 18:32:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1993.32.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/grafo1993.32.lp
Reading time = 0.11 seconds
: 68703 rows, 1525 columns, 207351 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 68703 rows, 1525 columns and 207351 nonzeros
Model fingerprint: 0x29dc0125
Variable types: 39 continuous, 1486 integer (1486 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]
Found heuristic solution: objective 2.0000000
Presolve removed 22909 rows and 19 columns
Presolve time: 0.52s
Presolved: 45794 rows, 1506 columns, 138822 nonzeros
Variable types: 0 continuous, 1506 integer (1467 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 1506 rows, 47300 columns, 140328 nonzeros


Root relaxation: objective 4.200000e+01, 2153 iterations, 0.57 seconds (0.72 work units)
Total elapsed time = 5.65s (DegenMoves)

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

     0     0   42.00000    0  549    9.00000   42.00000   367%     -    6s
H    0     0                      10.0000000   42.00000   320%     -    8s
     0     0   42.00000    0  740   10.00000   42.00000   320%     -   15s
H    0     0                      11.0000000   42.00000   282%     -   15s
     0     0   42.00000    0  682   11.00000   42.00000   282%     -   17s
     0     0   42.00000    0  408   11.00000   42.00000   282%     -   26s
     0     0   42.00000    0  387   11.00000   42.00000   282%     -   26s
     0     0   42.00000    0  652   11.00000   42.00000   282%     -   42s
H    0     0                      13.0000000   42.00000   223%     -   43s
     0     0   42.00000    0  640   13.00000   42.00000   223%     -   43s
     0     0   42.00000    0  664   13.00000   42.00000   223%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 20
  Clique: 21
  MIR: 141
  StrongCG: 2
  GUB cover: 1
  Zero half: 29
  RLT: 89
  BQP: 4

Explored 1 nodes (45634 simplex iterations) in 50.04 seconds (43.80 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 13 11 10 ... 2

Time limit reached
Best objective 1.300000000000e+01, best bound 4.200000000000e+01, gap 223.0769%

Wrote result file './lp_solutions/grafo1993.32.sol'

