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Example 1 with Disjunction

use of com.sri.ai.grinder.group.Disjunction in project aic-expresso by aic-sri-international.

the class AbstractTranslationBasedTheory method getSingleVariableConstraintSatisfiabilityStepSolver.

@Override
public ExpressionLiteralSplitterStepSolver getSingleVariableConstraintSatisfiabilityStepSolver(SingleVariableConstraint constraint, Context context) {
    Expression index = constraint.getVariable();
    Expression indexType = context.getTypeExpressionOfRegisteredSymbol(index);
    DefaultSingleQuantifierEliminationProblem problem = new DefaultSingleQuantifierEliminationProblem(new Disjunction(), index, indexType, constraint, TRUE);
    return getSingleQuantifierEliminatorStepSolver(problem, context);
}
Also used : Disjunction(com.sri.ai.grinder.group.Disjunction) Expression(com.sri.ai.expresso.api.Expression) DefaultSingleQuantifierEliminationProblem(com.sri.ai.grinder.core.solver.DefaultSingleQuantifierEliminationProblem)

Example 2 with Disjunction

use of com.sri.ai.grinder.group.Disjunction in project aic-expresso by aic-sri-international.

the class MultiQuantifierEliminationProblemTest method regularCasesTest.

@Test
public void regularCasesTest() {
    MultiQuantifierEliminationProblem problem;
    Expression problemExpression;
    problem = new DefaultSingleQuantifierEliminationProblem(new Sum(), parse("I"), parse("Integer"), parse("I > 3 and I < 10"), parse("I"));
    problemExpression = parse("sum({{ (on I in Integer) I : I > 3 and I < 10 }})");
    assertEquals(problemExpression, problem.toExpression());
    problem = new DefaultSingleQuantifierEliminationProblem(new Disjunction(), parse("I"), parse("Integer"), parse("I > 3 and I < 10"), parse("true"));
    problemExpression = parse("there exists I in Integer : I > 3 and I < 10");
    assertEquals(problemExpression, problem.toExpression());
    problem = new DefaultSingleQuantifierEliminationProblem(new Conjunction(), parse("I"), parse("Integer"), parse("I > 3 and I < 10"), parse("true"));
    problemExpression = parse("for all I in Integer : if I > 3 and I < 10 then true else true");
    assertEquals(problemExpression, problem.toExpression());
    problem = new DefaultMultiQuantifierEliminationProblem(new Sum(), list(parse("I"), parse("J")), list(parse("Integer"), parse("Boolean")), parse("I > 3 and I < 10 and not J"), parse("I"));
    problemExpression = parse("sum({{ (on I in Integer, J in Boolean) I : I > 3 and I < 10 and not J }})");
    assertEquals(problemExpression, problem.toExpression());
    problem = new DefaultMultiQuantifierEliminationProblem(new Disjunction(), list(parse("I"), parse("J")), list(parse("Integer"), parse("Boolean")), parse("I > 3 and I < 10 and not J"), parse("true"));
    problemExpression = parse("there exists I in Integer : there exists J in Boolean : I > 3 and I < 10 and not J");
    assertEquals(problemExpression, problem.toExpression());
    problem = new DefaultMultiQuantifierEliminationProblem(new Conjunction(), list(parse("I"), parse("J")), list(parse("Integer"), parse("Boolean")), parse("I > 3 and I < 10 and not J"), parse("true"));
    problemExpression = parse("for all I in Integer : for all J in Boolean : if I > 3 and I < 10 and not J then true else true");
    assertEquals(problemExpression, problem.toExpression());
}
Also used : Disjunction(com.sri.ai.grinder.group.Disjunction) Expression(com.sri.ai.expresso.api.Expression) DefaultMultiQuantifierEliminationProblem(com.sri.ai.grinder.core.solver.DefaultMultiQuantifierEliminationProblem) MultiQuantifierEliminationProblem(com.sri.ai.grinder.api.MultiQuantifierEliminationProblem) Conjunction(com.sri.ai.grinder.group.Conjunction) DefaultMultiQuantifierEliminationProblem(com.sri.ai.grinder.core.solver.DefaultMultiQuantifierEliminationProblem) DefaultSingleQuantifierEliminationProblem(com.sri.ai.grinder.core.solver.DefaultSingleQuantifierEliminationProblem) Sum(com.sri.ai.grinder.group.Sum) Test(org.junit.Test)

Aggregations

Expression (com.sri.ai.expresso.api.Expression)2 DefaultSingleQuantifierEliminationProblem (com.sri.ai.grinder.core.solver.DefaultSingleQuantifierEliminationProblem)2 Disjunction (com.sri.ai.grinder.group.Disjunction)2 MultiQuantifierEliminationProblem (com.sri.ai.grinder.api.MultiQuantifierEliminationProblem)1 DefaultMultiQuantifierEliminationProblem (com.sri.ai.grinder.core.solver.DefaultMultiQuantifierEliminationProblem)1 Conjunction (com.sri.ai.grinder.group.Conjunction)1 Sum (com.sri.ai.grinder.group.Sum)1 Test (org.junit.Test)1