cpachecker/bin/cpachecker --svcomp24 --heap 10000M --benchmark --option cpa.arg.yamlProofWitness=witness-%s.yml --option witness.yamlexporter.witnessVersions=V2d1,V2 --timelimit 900s --stats --spec sv-benchmarks/c/properties/unreach-call.prp --32 sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i -------------------------------------------------------------------------------- Running CPAchecker with Java heap of size 10000M. Running CPAchecker with default stack size (1024k). Specify a larger value with --stack if needed. Language C detected and set for analysis (CPAMain.detectFrontendLanguageIfNecessary, INFO) Using the following resource limits: CPU-time limit of 900s (ResourceLimitChecker.fromConfiguration, INFO) CPAchecker 3.1-svn-5f8d539e99+ / svcomp24 (OpenJDK 64-Bit Server VM 17.0.9) started (CPAchecker.run, INFO) Parsing CFA from file(s) "sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i" (CPAchecker.parse, INFO) Using heuristics to select analysis (CoreComponentsFactory.createAlgorithm, INFO) The following configuration options were specified but are not used: cpa.callstack.unsupportedFunctions termination.violation.witness cpa.predicate.memoryAllocationsAlwaysSucceed cpa.arg.compressWitness cpa.arg.yamlProofWitness cpa.callstack.skipFunctionPointerRecursion counterexample.export.yaml cpa.composite.aggregateBasicBlocks counterexample.export.graphml counterexample.export.compressWitness cpa.arg.proofWitness witness.yamlexporter.witnessVersions (CPAchecker.printConfigurationWarnings, WARNING) Starting analysis ... (CPAchecker.runAlgorithm, INFO) Performing heuristic ... (SelectionAlgorithm.chooseConfig, INFO) Using the following resource limits: CPU-time limit of 900s (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:ResourceLimitChecker.fromConfiguration, INFO) Using Restarting Algorithm (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:CoreComponentsFactory.createAlgorithm, INFO) Loading analysis 1 from file /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-singleconfig-bmc.properties ... (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:RestartAlgorithm.run, INFO) Using the following resource limits: CPU-time limit of 900s (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-singleconfig-bmc.properties:ResourceLimitChecker.fromConfiguration, INFO) Using predicate analysis with MathSAT5 version 5.6.10 (9293adc746be) (May 31 2023 12:38:06, gmp 6.2.0, gcc 7.5.0, 64-bit, reentrant). (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-singleconfig-bmc.properties:PredicateCPA:PredicateCPA., INFO) Starting analysis 1 ... (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:RestartAlgorithm.run, INFO) Skipping recursive function call from func_to_recursive_line_39_to_67_0 to func_to_recursive_line_39_to_67_0 (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-singleconfig-bmc.properties:TargetLocationProvider:CallstackCPA:CallstackTransferRelation.getAbstractSuccessorsForEdge, WARNING) Creating formula for program (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-singleconfig-bmc.properties:AbstractBMCAlgorithm.run, INFO) Assuming external function sqrt to be a pure function. (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-singleconfig-bmc.properties:PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Ignoring restart configuration '/storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--recursion.properties' because condition if-recursive did not match. (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:RestartAlgorithm.skipNextAnalysesIfRequired, INFO) Ignoring restart configuration '/storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--concurrency.properties' because condition if-concurrent did not match. (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:RestartAlgorithm.skipNextAnalysesIfRequired, INFO) Warning: Analysis 3 not completed. (line 141: Unsupported feature (arithmetic function): sqrt(n) (line was originally s = sqrt(n);)) (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:ExpressionToFormulaVisitor.visit, WARNING) Statistics for algorithm 3 of 4 =============================== Total time for algorithm 3: 0.326s PredicateCPA statistics ----------------------- Number of abstractions: 0 (0% of all post computations) Number of strengthen sat checks: 0 Number of coverage checks: 0 BDD entailment checks: 0 Number of SMT sat checks: 0 trivial: 0 cached: 0 Max ABE block size: 0 Avg ABE block size: 0.00 (sum: 0, count: 0, min: 0, max: 0) Number of predicates discovered: 0 Time for post operator: 0.059s Time for path formula creation: 0.058s Time for strengthen operator: 0.004s Time for prec operator: 0.002s Time for coverage checks: 0.000s Total time for SMT solver (w/o itp): 0.000s Total number of created targets for pointer analysis: 0 KeyValue statistics ------------------- Init. function predicates: 0 Init. global predicates: 0 Init. location predicates: 0 Invariant Generation statistics ------------------------------- Bounds CPA statistics --------------------- Bound k: 1 Maximum loop iteration reached: 0 ValueAnalysisCPA statistics --------------------------- Number of variables per state: 0.05 (sum: 2, count: 43, min: 0, max: 1) Number of global variables per state: 0.00 (sum: 0, count: 43, min: 0, max: 0) Number of assumptions: 4 Number of deterministic assumptions: 0 Level of Determinism: 0% ValueAnalysisPrecisionAdjustment statistics ------------------------------------------- Number of abstraction computations: 42 Total time for liveness abstraction: 0.000s Total time for abstraction computation: 0.000s Total time for path thresholds: 0.000s ConstraintsStrengthenOperator statistics ---------------------------------------- Total time for strengthening by ConstraintsCPA: 0.000s Replaced symbolic expressions: 0 AutomatonAnalysis (SVCOMP) statistics ------------------------------------- Number of states: 1 Total time for successor computation: 0.003s Automaton transfers with branching: 0 Automaton transfer successors: 0.95 (sum: 42, count: 44, min: 0, max: 1) [0 x 2, 1 x 42] Number of states with assumption transitions: 0 CPA algorithm statistics ------------------------ Number of iterations: 43 Max size of waitlist: 2 Average size of waitlist: 1 LoopstackSortedWaitlist: 0.10 (sum: 4, count: 39, min: 0, max: 2) ReversePostorderSortedWaitlist: 0.00 (sum: 0, count: 39, min: 0, max: 0) LoopIterationSortedWaitlist: 0.10 (sum: 4, count: 39, min: 0, max: 2) CallstackSortedWaitlist: 4.00 (sum: 4, count: 1, min: 4, max: 4) Number of computed successors: 42 Max successors for one state: 2 Number of times merged: 0 Number of times stopped: 0 Number of times breaked: 0 Total time for CPA algorithm: 0.096s (Max: 0.096s) Time for choose from waitlist: 0.002s Time for precision adjustment: 0.006s Time for transfer relation: 0.082s Time for stop operator: 0.002s Time for adding to reached set: 0.003s BMC algorithm statistics ------------------------ Time for BMC formula creation: 0.099s CPA algorithm statistics ------------------------ Number of iterations: 43 Max size of waitlist: 2 Average size of waitlist: 1 LoopstackSortedWaitlist: 0.10 (sum: 4, count: 39, min: 0, max: 2) ReversePostorderSortedWaitlist: 0.00 (sum: 0, count: 39, min: 0, max: 0) LoopIterationSortedWaitlist: 0.10 (sum: 4, count: 39, min: 0, max: 2) CallstackSortedWaitlist: 4.00 (sum: 4, count: 1, min: 4, max: 4) Number of computed successors: 42 Max successors for one state: 2 Number of times merged: 0 Number of times stopped: 0 Number of times breaked: 0 Total time for CPA algorithm: 0.096s (Max: 0.096s) Time for choose from waitlist: 0.002s Time for precision adjustment: 0.006s Time for transfer relation: 0.082s Time for stop operator: 0.002s Time for adding to reached set: 0.003s BMC algorithm statistics ------------------------ Time for BMC formula creation: 0.099s RestartAlgorithm switches to the next configuration... (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:RestartAlgorithm.run, INFO) Loading analysis 4 from file /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restartcomponent-predicateAnalysis-end.properties ... (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:RestartAlgorithm.run, INFO) Mismatch of configuration options when loading from '/storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restartcomponent-predicateAnalysis-end.properties': 'cpa.composite.aggregateBasicBlocks' has two values 'false' and 'true'. Using 'true'. (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:NestingAlgorithm.checkConfigs, INFO) Using the following resource limits: CPU-time limit of 900s (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restartcomponent-predicateAnalysis-end.properties:ResourceLimitChecker.fromConfiguration, INFO) Using predicate analysis with MathSAT5 version 5.6.10 (9293adc746be) (May 31 2023 12:38:06, gmp 6.2.0, gcc 7.5.0, 64-bit, reentrant) and JFactory 1.21. (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restartcomponent-predicateAnalysis-end.properties:PredicateCPA:PredicateCPA., INFO) Using refinement for predicate analysis with PredicateAbstractionRefinementStrategy strategy. (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restartcomponent-predicateAnalysis-end.properties:PredicateCPA:PredicateCPARefiner., INFO) Starting analysis 4 ... (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:RestartAlgorithm.run, INFO) Assuming external function sqrt to be a pure function. (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restartcomponent-predicateAnalysis-end.properties:PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Error: line 141: Unsupported feature (arithmetic function): sqrt(n) (line was originally s = sqrt(n);) (ExpressionToFormulaVisitor.visit, SEVERE) Selection Algorithm statistics ------------------------------ Size of preliminary analysis reached set: 0 Used algorithm property: /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties Program containing only relevant bools: 0 Relevant boolean vars / relevant vars ratio: 0.0000 Requires alias handling: 1 Requires loop handling: 0 Has a single loop: 0 Requires composite-type handling: 0 Requires array handling: 0 Requires float handling: 0 Requires recursion handling: 0 Relevant addressed vars / relevant vars ratio: 0.3636 Program containing external functions: true Number of all righthand side functions: 8 Restart Algorithm statistics ---------------------------- Number of algorithms provided: 4 Number of algorithms used: 4 Last algorithm used: /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restartcomponent-predicateAnalysis-end.properties Total time for algorithm 4: 0.091s PredicateCPA statistics ----------------------- Number of abstractions: 0 (0% of all post computations) Number of strengthen sat checks: 0 Number of coverage checks: 0 BDD entailment checks: 0 Number of SMT sat checks: 0 trivial: 0 cached: 0 Max ABE block size: 0 Avg ABE block size: 0.00 (sum: 0, count: 0, min: 0, max: 0) Number of predicates discovered: 0 Time for post operator: 0.014s Time for path formula creation: 0.014s Time for strengthen operator: 0.002s Time for prec operator: 0.001s Time for coverage checks: 0.000s Total time for SMT solver (w/o itp): 0.000s Number of path formula cache hits: 0 (0%) Inside post operator: Inside path formula creation: Time for path formula computation: 0.014s Total number of created targets for pointer analysis: 0 Number of BDD nodes: 202 Size of BDD node table: 524309 Size of BDD node cleanup queue: 0.00 (sum: 0, count: 1, min: 0, max: 0) Time for BDD node cleanup: 0.000s Time for BDD garbage collection: 0.000s (in 0 runs) KeyValue statistics ------------------- Init. function predicates: 0 Init. global predicates: 0 Init. location predicates: 0 Invariant Generation statistics ------------------------------- AutomatonAnalysis (SVCOMP) statistics ------------------------------------- Number of states: 1 Total time for successor computation: 0.001s Automaton transfers with branching: 0 Automaton transfer successors: 0.95 (sum: 42, count: 44, min: 0, max: 1) [0 x 2, 1 x 42] Number of states with assumption transitions: 0 CPA algorithm statistics ------------------------ Number of iterations: 17 Max size of waitlist: 2 Average size of waitlist: 1 ReversePostorderSortedWaitlist: 0.00 (sum: 0, count: 13, min: 0, max: 0) CallstackSortedWaitlist: 4.00 (sum: 4, count: 1, min: 4, max: 4) Number of computed successors: 16 Max successors for one state: 2 Number of times merged: 0 Number of times stopped: 0 Number of times breaked: 0 Total time for CPA algorithm: 0.022s (Max: 0.022s) Time for choose from waitlist: 0.000s Time for precision adjustment: 0.003s Time for transfer relation: 0.019s Time for stop operator: 0.000s Time for adding to reached set: 0.000s Static Predicate Refiner statistics ----------------------------------- PredicateCPARefiner statistics ------------------------------ Number of predicate refinements: 0 Predicate-Abstraction Refiner statistics ---------------------------------------- Predicate creation: 0.000s Precision update: 0.000s ARG update: 0.000s Length of refined path (in blocks): 0.00 (sum: 0, count: 0, min: 0, max: 0) Number of affected states: 0 (count: 0, min: 0, max: 0, avg: 0.00) Length (states) of path with itp 'true': 0 (count: 0, min: 0, max: 0, avg: 0.00) Length (states) of path with itp non-trivial itp: 0 (count: 0, min: 0, max: 0, avg: 0.00) Length (states) of path with itp 'false': 0 (count: 0, min: 0, max: 0, avg: 0.00) Different non-trivial interpolants along paths: 0 (count: 0, min: 0, max: 0, avg: 0.00) Equal non-trivial interpolants 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 CEGAR refinements: 0 CPA algorithm statistics ------------------------ Number of iterations: 17 Max size of waitlist: 2 Average size of waitlist: 1 ReversePostorderSortedWaitlist: 0.00 (sum: 0, count: 13, min: 0, max: 0) CallstackSortedWaitlist: 4.00 (sum: 4, count: 1, min: 4, max: 4) Number of computed successors: 16 Max successors for one state: 2 Number of times merged: 0 Number of times stopped: 0 Number of times breaked: 0 Total time for CPA algorithm: 0.022s (Max: 0.022s) Time for choose from waitlist: 0.000s Time for precision adjustment: 0.003s Time for transfer relation: 0.019s Time for stop operator: 0.000s Time for adding to reached set: 0.000s Static Predicate Refiner statistics ----------------------------------- PredicateCPARefiner statistics ------------------------------ Number of predicate refinements: 0 Predicate-Abstraction Refiner statistics ---------------------------------------- Predicate creation: 0.000s Precision update: 0.000s ARG update: 0.000s Length of refined path (in blocks): 0.00 (sum: 0, count: 0, min: 0, max: 0) Number of affected states: 0 (count: 0, min: 0, max: 0, avg: 0.00) Length (states) of path with itp 'true': 0 (count: 0, min: 0, max: 0, avg: 0.00) Length (states) of path with itp non-trivial itp: 0 (count: 0, min: 0, max: 0, avg: 0.00) Length (states) of path with itp 'false': 0 (count: 0, min: 0, max: 0, avg: 0.00) Different non-trivial interpolants along paths: 0 (count: 0, min: 0, max: 0, avg: 0.00) Equal non-trivial interpolants 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 CEGAR refinements: 0 CPAchecker general statistics ----------------------------- Number of program locations: 101 Number of CFA edges (per node): 118 (count: 101, min: 0, max: 4, avg: 1.17) Number of relevant variables: 22 Number of functions: 5 Number of loops (and loop nodes): 0 (sum: 0, min: 0, max: 0, avg: 0.00) Size of reached set: 17 Number of reached locations: 11 (11%) Avg states per location: 1 Max states per location: 2 (at node N8) Number of reached functions: 2 (40%) Number of target states: 0 Size of final wait list: 1 Time for analysis setup: 0.955s Time for loading CPAs: 0.287s Time for loading parser: 0.173s Time for CFA construction: 0.476s Time for parsing file(s): 0.194s Time for AST to CFA: 0.144s Time for CFA sanity check: 0.000s Time for post-processing: 0.096s Time for loop structure: 0.002s Time for AST structure: 0.000s Time for function pointers resolving: 0.003s Function calls via function pointers: 0 (count: 1, min: 0, max: 0, avg: 0.00) Instrumented function pointer calls: 0 (count: 1, min: 0, max: 0, avg: 0.00) Function calls with function pointer arguments: 0 (count: 1, min: 0, max: 0, avg: 0.00) Instrumented function pointer arguments: 0 (count: 1, min: 0, max: 0, avg: 0.00) Time for classifying variables: 0.068s Time for collecting variables: 0.044s Time for solving dependencies: 0.000s Time for building hierarchy: 0.000s Time for building classification: 0.024s Time for exporting data: 0.000s Time for Analysis: 0.458s CPU time for analysis: 0.840s Total time for CPAchecker: 1.414s Total CPU time for CPAchecker: 2.630s Time for statistics: 0.028s Time for Garbage Collector: 0.028s (in 6 runs) Garbage Collector(s) used: G1 Old Generation, G1 Young Generation Verification result: UNKNOWN, incomplete analysis. Exporting witnesses in Version 2.1 is currently WIP. (Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restart-bmc-fallbacks.properties:Analysis /storage/repos/certificate-witnesses-artifact/cpachecker/config/components/svcomp24--configselection-restartcomponent-predicateAnalysis-end.properties:ARGCPA:ARGToYAMLWitnessExport.export, INFO) More details about the verification run can be found in the directory "./output".