What does the following MiniZinc model print as output when you run it? var 0..3: x;constraint x = x + 1;

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BlackTom AI · Accepted Answer

This question asks what a MiniZinc model prints given a specific variable declaration and constraint. The variable x ranges from 0 to 3, and the constraint is x = x + 1. 
Option a: 'x = 2.' If x were 2, the constraint would require 2 = 3, which is false. Therefore this assignment cannot satisfy the model.
Option b: 'x = 0.' If x were 0, the constraint would require 0 = 1, which is false. Hence this alternative does not satisfy the model.
Option c: 'x = 3.' If x were 3, the constraint would require 3 = 4, which is false. Thus this value cannot be valid.
Option d: 'x = 1.' If x were 1, the constraint would require 1 = 2, which is false. So this option is also incompatible with the constraint.
Option e: '=====UNSATISFIABLE=====' This option reflects the logical outcome when a constraint cannot be satisfied by any value in the domain. The core issue is that no integer x in {0,1,2,3} can satisfy x = x + 1, since adding 1 to x changes its value, making equality impossible. In constraint programming terms, the posted constraint is inconsistent with the variable's domain, yielding an unsatisfiable problem. 
To summarize the reasoning across options, each concrete value (2, 0, 3, 1) fails the equality constraint because it would imply a contradiction (x equals a value that is exactly one greater than itself). The final outcome is that the model has no feasible solution, hence the unsatisfiability indication is used.

FIT5216_S1_2025 Week 2 participation quiz

What does the following MiniZinc model print as output when you run it? var 0..3: x;constraint x = x + 1;

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What is the value of h in the following var 0..100: x = y + 2; var 4..7: y; int: h = lb(x);

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FIT5216_S1_2025 Week 2 participation quiz

What does the following MiniZinc model print as output when you run it? var 0..3: x;constraint x = x + 1;

查看解析

登录即可查看完整答案

类似问题

What is the value of h in the following var 0..100: x = y + 2; var 4..7: y; int: h = lb(x);

What is the value of h in the following var 0..100: x = y + 2; var 4..7: y; int: h = lb(x);

What is the value of h in the following var 0..100: x = y + 2; var 4..7: y; int: h = lb(x);

What does the following MiniZinc model print? var 0..3: x;var 1..4: y;constraint y = x + 1;constraint 2*y + 3*x = 12;

What output does the following MiniZinc model produce? var 0..3: x;constraint 2*x = x + 1;

What does the following MiniZinc model print as output: var 0..3: x;var 1..4: y;constraint x = y;

What does the following MiniZinc model print? var 0..3: x;var 1..4: y;constraint y = x + 1;constraint 2*y + 3*x = 12;

What output does the following MiniZinc model produce? var 0..3: x;constraint 2*x = x + 1;

更多留学生实用工具

希望你的学习变得更简单

What does the following MiniZinc model print? var 0..3: x;var 1..4: y;constraint y = x + 1;constraint 2y + 3x = 12;

What does the following MiniZinc model print? var 0..3: x;var 1..4: y;constraint y = x + 1;constraint 2y + 3x = 12;