(0) Obligation:
Need to prove time_complexity of the following program:
package ArrayPrimitives;
public class ArrayPrimitives {
public static void main(String[] argv) {
Random.args = argv;
int int0 = Random.random();
int int1 = Random.random();
int int2 = Random.random();
int[] data = {int0, int1, int2};
while (data[0] != int0);
while (data[1] != int1);
while (data[2] != int2);
}
}
package ArrayPrimitives;
public class Random {
static String[] args;
static int index = 0;
public static int random() {
String string = args[index];
index++;
return string.length();
}
}
(1) JBCToGraph (BOTH CONCRETE BOUNDS(ID, ID) transformation)
Constructed TerminationGraph.
(2) Obligation:
Termination Graph based on JBC Program:
ArrayPrimitives.ArrayPrimitives.main([Ljava/lang/String;)V: Graph of 252 nodes with 0 SCCs.
(3) TerminationGraphToComplexityProof (BOTH CONCRETE BOUNDS(ID, ADD(169)) transformation)
Extracted set of 79 edges for the analysis of TIME complexity. Kept leaves.
(4) Obligation:
Set of 79 edges based on JBC Program.
Performed SCC analyses:
- Used field analysis yielded the following read fields:
Considered paths: nonterm paths and paths from start to sinks
(5) JBCToGraph (BOTH CONCRETE BOUNDS(ID, ID) transformation)
Constructed TerminationGraph.
(6) Obligation:
Termination Graph based on JBC Program:
ArrayPrimitives.ArrayPrimitives.main([Ljava/lang/String;)V: Graph of 252 nodes with 0 SCCs.
(7) TerminationGraphToComplexityProof (EQUIVALENT transformation)
Proven constant complexity by absence of SCCs and edges with non-constant weight
(8) BOUNDS(CONSTANT, 225)