scripts/cpa.sh -heap 50000M -noout -disable-java-assertions -predicateAnalysis-PredAbsRefiner-ABEl -timelimit 900s -stats -spec test/programs/benchmarks/bitvector/ALL.prp test/programs/benchmarks/bitvector/gcd_2_true-unreach-call.i -------------------------------------------------------------------------------- Running CPAchecker with Java heap of size 50000M. Using the following resource limits: CPU-time limit of 900s (ResourceLimitChecker.fromConfiguration, INFO) CPAchecker 1.4-svn (OpenJDK 64-Bit Server VM 1.7.0_65) started (CPAchecker.run, INFO) Using predicate analysis with SMTInterpol 2.1-174-ga199d47-comp and JFactory 1.21. (PredicateCPA:PredicateCPA., INFO) Using refinement for predicate analysis with PredicateAbstractionRefinementStrategy strategy. (PredicateCPA:PredicateCPARefiner., INFO) Starting analysis ... (CPAchecker.runAlgorithm, INFO) Stopping analysis ... (CPAchecker.runAlgorithm, INFO) PredicateCPA statistics ----------------------- Number of abstractions: 16 (8% of all post computations) Times abstraction was reused: 0 Because of function entry/exit: 0 (0%) Because of loop head: 16 (100%) Because of join nodes: 0 (0%) Because of threshold: 0 (0%) Times precision was empty: 4 (25%) Times precision was {false}: 0 (0%) Times result was cached: 0 (0%) Times cartesian abs was used: 0 (0%) Times boolean abs was used: 12 (75%) Times result was 'false': 0 (0%) Number of strengthen sat checks: 11 Times result was 'false': 7 (64%) Number of coverage checks: 36 BDD entailment checks: 20 Number of SMT sat checks: 11 trivial: 0 cached: 1 Max ABE block size: 7 Number of predicates discovered: 12 Number of abstraction locations: 2 Max number of predicates per location: 10 Avg number of predicates per location: 6 Total predicates per abstraction: 76 Max number of predicates per abstraction: 10 Avg number of predicates per abstraction: 6.33 Number of irrelevant predicates: 0 (0%) Number of preds handled by boolean abs: 76 (100%) Total number of models for allsat: 85 Max number of models for allsat: 14 Avg number of models for allsat: 7.08 Number of path formula cache hits: 126 (61%) Time for post operator: 0.061s Time for path formula creation: 0.059s Actual computation: 0.056s Time for strengthen operator: 0.065s Time for satisfiability checks: 0.064s Time for prec operator: 0.388s Time for abstraction: 0.388s (Max: 0.045s, Count: 16) Boolean abstraction: 0.284s Solving time: 0.046s (Max: 0.008s) Model enumeration time: 0.187s Time for BDD construction: 0.008s (Max: 0.002s) Time for merge operator: 0.004s Time for coverage check: 0.001s Time for BDD entailment checks: 0.001s Total time for SMT solver (w/o itp): 0.296s Number of BDD nodes: 576 Size of BDD node table: 10007 Size of BDD node cleanup queue: 0 (count: 229, min: 0, max: 0, avg: 0,00) Time for BDD node cleanup: 0.000s Time for BDD garbage collection: 0.000s (in 0 runs) PrecisionBootstrap statistics ----------------------------- Init. function predicates: 0 Init. global predicates: 0 Init. location predicates: 0 AutomatonAnalysis (SVCOMP) statistics ------------------------------------- Number of states: 1 Total time for successor computation: 0.004s Automaton transfers with branching: 0 Automaton transfer successors: 262 (count: 262, min: 1, max: 1, avg: 1,00) [1 x 262] CPA algorithm statistics ------------------------ Number of iterations: 159 Max size of waitlist: 9 Average size of waitlist: 4 Number of computed successors: 185 Max successors for one state: 2 Number of times merged: 8 Number of times stopped: 13 Number of times breaked: 4 Total time for CPA algorithm: 0.581s (Max: 0.227s) Time for choose from waitlist: 0.001s Time for precision adjustment: 0.401s Time for transfer relation: 0.161s Time for merge operator: 0.007s Time for stop operator: 0.003s Time for adding to reached set: 0.002s Predicate-Abstraction Refiner statistics ---------------------------------------- Avg. length of target path (in blocks): 11 (count: 4, min: 2, max: 4, avg: 2,75) Time for refinement: 0.108s Counterexample analysis: 0.093s (Max: 0.030s, Calls: 4) Refinement sat check: 0.046s Interpolant computation: 0.039s Error path post-processing: 0.000s Path-formulas extraction: 0.000s Building the counterexample trace: 0.093s Extracting precise counterexample: 0.000s Predicate creation: 0.002s Precision update: 0.002s ARG update: 0.004s Length of refined path (in blocks): 9 (count: 3, min: 2, max: 4, avg: 3,00) Number of affected states: 6 (count: 3, min: 1, max: 3, avg: 2,00) Length (states) of path with itp 'true': 0 (count: 3, min: 0, max: 0, avg: 0,00) Length (states) of path with itp non-trivial itp: 6 (count: 3, min: 1, max: 3, avg: 2,00) Length (states) of path with itp 'false': 0 (count: 3, min: 0, max: 0, avg: 0,00) Different non-trivial interpolants along paths: 3 (count: 3, min: 0, max: 2, avg: 1,00) Equal non-trivial interpolants along paths: 0 (count: 3, min: 0, max: 0, avg: 0,00) Different precisions along paths: 0 (count: 0, min: 0, max: 0, avg: 0,00) Equal precisions along paths: 0 (count: 0, min: 0, max: 0, avg: 0,00) Number of refs with location-based cutoff: 0 CEGAR algorithm statistics -------------------------- Number of refinements: 4 Number of successful refinements: 4 Number of failed refinements: 0 Max. size of reached set before ref.: 51 Max. size of reached set after ref.: 10 Avg. size of reached set before ref.: 33.50 Avg. size of reached set after ref.: 7.75 Total time for CEGAR algorithm: 0.699s Time for refinements: 0.117s Average time for refinement: 0.029s Max time for refinement: 0.034s Counterexample-Check Algorithm statistics ----------------------------------------- Number of counterexample checks: 0 CPAchecker general statistics ----------------------------- Number of program locations: 26 Number of functions: 3 Number of loops: 1 Size of reached set: 70 Number of reached locations: 25 (96%) Avg states per location: 2 Max states per location: 4 (at node N0) Number of reached functions: 3 (100%) Number of partitions: 67 Avg size of partitions: 1 Max size of partitions: 4 (with key [N18 (before line 17), Function gcd_test called from node N30, stack depth 2 [3591dd5b], stack [main, gcd_test], Init]) Number of target states: 0 Time for analysis setup: 1.447s Time for loading CPAs: 0.557s Time for loading parser: 0.334s Time for CFA construction: 0.465s Time for parsing file(s): 0.186s Time for AST to CFA: 0.182s Time for CFA sanity check: 0.000s Time for post-processing: 0.073s Time for var class.: 0.000s Time for Analysis: 0.700s CPU time for analysis: 0.940s Total time for CPAchecker: 2.150s Total CPU time for CPAchecker: 3.010s Time for Garbage Collector: 0.000s (in 0 runs) Garbage Collector(s) used: PS MarkSweep, PS Scavenge Used heap memory: 169MB ( 161 MiB) max; 118MB ( 112 MiB) avg; 169MB ( 161 MiB) peak Used non-heap memory: 21MB ( 20 MiB) max; 15MB ( 15 MiB) avg; 21MB ( 20 MiB) peak Used in PS Old Gen pool: 0MB ( 0 MiB) max; 0MB ( 0 MiB) avg; 0MB ( 0 MiB) peak Allocated heap memory: 2024MB ( 1930 MiB) max; 2024MB ( 1930 MiB) avg Allocated non-heap memory: 24MB ( 23 MiB) max; 24MB ( 23 MiB) avg Total process virtual memory: 57054MB ( 54411 MiB) max; 57054MB ( 54411 MiB) avg Verification result: TRUE. No property violation found by chosen configuration. More details about the verification run can be found in the directory "./output".