/storage/repos/cpachecker/scripts/cpa.sh -witnessValidation -setprop witness.checkProgramHash=false -heap 5000m -benchmark -setprop cpa.predicate.memoryAllocationsAlwaysSucceed=true -setprop cpa.smg.memoryAllocationFunctions=malloc,__kmalloc,kmalloc,kzalloc,kzalloc_node,ldv_zalloc,ldv_malloc -setprop cpa.smg.arrayAllocationFunctions=calloc,kmalloc_array,kcalloc -setprop cpa.smg.zeroingMemoryAllocation=calloc,kzalloc,kcalloc,kzalloc_node,ldv_zalloc -setprop cpa.smg.deallocationFunctions=free,kfree,kfree_const -witness /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/results-verified/uautomizer-local.2021-09-22_14-18-52.files/SV-COMP21_unreach-call/qrcu-2.yml/witness.graphml -timelimit 90s -stats -spec ../sv-benchmarks/c/properties/unreach-call.prp -32 ../sv-benchmarks/c/pthread-atomic/qrcu-2.i -------------------------------------------------------------------------------- Running CPAchecker with Java heap of size 5000m. 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 90s (ResourceLimitChecker.fromConfiguration, INFO) CPAchecker 2.0.1-svn / witnessValidation (OpenJDK 64-Bit Server VM 11.0.12) started (CPAchecker.run, INFO) Parsing CFA from file(s) "../sv-benchmarks/c/pthread-atomic/qrcu-2.i" (CPAchecker.parse, INFO) program contains concurrency, cloning functions... (CFACreator.postProcessingOnMutableCFAs, INFO) Using Restarting Algorithm (CoreComponentsFactory.createAlgorithm, INFO) The following configuration options were specified but are not used: termination.violation.witness cpa.smg.arrayAllocationFunctions cpa.smg.deallocationFunctions cpa.smg.memoryAllocationFunctions cpa.predicate.memoryAllocationsAlwaysSucceed cpa.arg.compressWitness cpa.automaton.treatErrorsAsTargets cpa.composite.aggregateBasicBlocks WitnessAutomaton.cpa.automaton.treatErrorsAsTargets counterexample.export.exportAsSource counterexample.export.graphml counterexample.export.compressWitness cpa.arg.proofWitness cpa.smg.zeroingMemoryAllocation (CPAchecker.printConfigurationWarnings, WARNING) Starting analysis ... (CPAchecker.runAlgorithm, INFO) Loading analysis 1 from file /storage/repos/cpachecker/config/components/violationWitnessValidation.properties ... (RestartAlgorithm.run, INFO) Mismatch of configuration options when loading from '/storage/repos/cpachecker/config/components/violationWitnessValidation.properties': 'limits.time.cpu' has two values '90s' and ''. Using ''. (NestingAlgorithm.checkConfigs, INFO) Mismatch of configuration options when loading from '/storage/repos/cpachecker/config/components/violationWitnessValidation.properties': 'specification' has two values '../sv-benchmarks/c/properties/unreach-call.prp,/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/results-verified/uautomizer-local.2021-09-22_14-18-52.files/SV-COMP21_unreach-call/qrcu-2.yml/witness.graphml' and ''. Using ''. (NestingAlgorithm.checkConfigs, INFO) Using predicate analysis with MathSAT5 version 5.6.6 (218275631c24) (Apr 23 2021 08:35:29, gmp 6.1.2, gcc 7.5.0, 64-bit, reentrant) and JFactory 1.21. (Analysis /storage/repos/cpachecker/config/components/violationWitnessValidation.properties:PredicateCPA:PredicateCPA., INFO) Using refinement for predicate analysis with PredicateAbstractionRefinementStrategy strategy. (Analysis /storage/repos/cpachecker/config/components/violationWitnessValidation.properties:PredicateCPA:PredicateCPARefiner., INFO) Starting analysis 1 ... (RestartAlgorithm.run, INFO) Assuming external function pthread_mutex_init to be a pure function. (Analysis /storage/repos/cpachecker/config/components/violationWitnessValidation.properties:PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Warning: Analysis 1 not completed. (line 784: Unsupported feature (pthread_create): pthread_create(&t1, 0, &qrcu_reader1, 0); (line was originally pthread_create(&t1, 0, qrcu_reader1, 0);)) (CallstackTransferRelation.getAbstractSuccessorsForEdge, WARNING) Ignoring restart configuration '/storage/repos/cpachecker/config/components/violationWitnessValidation--recursion.properties' because condition if-recursive did not match. (RestartAlgorithm.run, INFO) Statistics for algorithm 2 of 3 =============================== Total time for algorithm 2: 0.529s PredicateCPA statistics ----------------------- Number of abstractions: 0 (0% of all post computations) Number of strengthen sat checks: 0 Number of coverage checks: 6 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: 0.048s Time for path formula creation: 0.046s Time for strengthen operator: 0.010s Time for prec operator: 0.004s 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: 0.041s Total number of created targets for pointer analysis: 0 Number of BDD nodes: 202 Size of BDD node table: 262147 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 ------------------------------- ValueAnalysisCPA statistics --------------------------- Number of variables per state: 0.34 (sum: 106, count: 312, min: 0, max: 5) Number of global variables per state: 0.34 (sum: 106, count: 312, min: 0, max: 5) Number of assumptions: 0 Number of deterministic assumptions: 0 Level of Determinism: 100% ValueAnalysisPrecisionAdjustment statistics ------------------------------------------- Number of abstraction computations: 311 Total time for liveness abstraction: 0.000s Total time for abstraction computation: 0.002s 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: 0.004s Automaton transfers with branching: 0 Automaton transfer successors: 1.00 (sum: 308, count: 308, min: 1, max: 1) [1 x 308] Number of states with assumption transitions: 0 AutomatonAnalysis (WitnessAutomaton) statistics ----------------------------------------------- Number of states: 36 Total time for successor computation: 0.019s Automaton transfers with branching: 3 Automaton transfer successors: 1.01 (sum: 311, count: 308, min: 1, max: 2) [1 x 305, 2 x 3] Number of states with assumption transitions: 6 CPA algorithm statistics ------------------------ Number of iterations: 309 Max size of waitlist: 4 Average size of waitlist: 1 ReversePostorderSortedWaitlist: 0.00 (sum: 0, count: 309, min: 0, max: 0) CallstackSortedWaitlist: 0.00 (sum: 0, count: 309, min: 0, max: 0) AutomatonVariableWaitlist: 0.00 (sum: 0, count: 1, min: 0, max: 0) Number of computed successors: 311 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: 0.169s (Max: 0.169s) Time for choose from waitlist: 0.007s Time for precision adjustment: 0.021s Time for transfer relation: 0.121s Time for merge operator: 0.001s Time for stop operator: 0.003s Time for adding to reached set: 0.008s 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: 309 Max size of waitlist: 4 Average size of waitlist: 1 ReversePostorderSortedWaitlist: 0.00 (sum: 0, count: 309, min: 0, max: 0) CallstackSortedWaitlist: 0.00 (sum: 0, count: 309, min: 0, max: 0) AutomatonVariableWaitlist: 0.00 (sum: 0, count: 1, min: 0, max: 0) Number of computed successors: 311 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: 0.169s (Max: 0.169s) Time for choose from waitlist: 0.007s Time for precision adjustment: 0.021s Time for transfer relation: 0.121s Time for merge operator: 0.001s Time for stop operator: 0.003s Time for adding to reached set: 0.008s 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 RestartAlgorithm switches to the next configuration... (RestartAlgorithm.run, INFO) Loading analysis 3 from file /storage/repos/cpachecker/config/components/violationWitnessValidation--concurrency.properties ... (RestartAlgorithm.run, INFO) Mismatch of configuration options when loading from '/storage/repos/cpachecker/config/components/violationWitnessValidation--concurrency.properties': 'limits.time.cpu' has two values '90s' and ''. Using ''. (NestingAlgorithm.checkConfigs, INFO) Mismatch of configuration options when loading from '/storage/repos/cpachecker/config/components/violationWitnessValidation--concurrency.properties': 'specification' has two values '../sv-benchmarks/c/properties/unreach-call.prp,/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/results-verified/uautomizer-local.2021-09-22_14-18-52.files/SV-COMP21_unreach-call/qrcu-2.yml/witness.graphml' and ''. Using ''. (NestingAlgorithm.checkConfigs, INFO) Starting analysis 3 ... (RestartAlgorithm.run, INFO) Shutdown requested (The JVM is shutting down, probably because Ctrl+C was pressed.), waiting for termination. (ForceTerminationOnShutdown$1.shutdownRequested, WARNING) Warning: Analysis interrupted (The JVM is shutting down, probably because Ctrl+C was pressed.) (ShutdownNotifier.shutdownIfNecessary, WARNING) Restart Algorithm statistics ---------------------------- Number of algorithms provided: 3 Number of algorithms used: 3 Total time for algorithm 3: 46.398s BDDCPA statistics ----------------- Number of boolean vars: 32 (of 83) Number of intEqual vars: 46 (of 68) Number of intAdd vars: 47 (of 87) Number of all vars: 125 Number of intBool partitions: 77 Number of intEq partitions: 8 Number of intAdd partitions: 2 Number of all partitions: 138 Number of named predicates: 28864 Number of BDD nodes: 1714194 Size of BDD node table: 1811899 Size of BDD cache: 181193 Size of BDD node cleanup queue: 0.46 (sum: 10634560, count: 22927800, min: 0, max: 443229) Time for BDD node cleanup: 4.015s Time for BDD garbage collection: 1.948s (in 33 runs) AutomatonAnalysis (SVCOMP) statistics ------------------------------------- Number of states: 1 Total time for successor computation: 0.700s Time for transition matches: 0.124s Time for transition assertions: 0.000s Time for transition actions: 0.003s Automaton transfers with branching: 0 Automaton transfer successors: 0.98 (sum: 221573, count: 225554, min: 0, max: 1) [0 x 3981, 1 x 221573] Number of states with assumption transitions: 0 AutomatonAnalysis (WitnessAutomaton) statistics ----------------------------------------------- Number of states: 36 Total time for successor computation: 1.623s Time for transition matches: 1.061s Time for transition assertions: 0.020s Time for transition actions: 0.157s Automaton transfers with branching: 126 Automaton transfer successors: 1.00 (sum: 221953, count: 221827, min: 1, max: 2) [1 x 221701, 2 x 126] Number of states with assumption transitions: 6 CPA algorithm statistics ------------------------ Number of iterations: 189484 Max size of waitlist: 325 Average size of waitlist: 207 CallstackSortedWaitlist: 34.63 (sum: 180551, count: 5214, min: 0, max: 9645) AutomatonVariableWaitlist: 184270.00 (sum: 184270, count: 1, min: 184270, max: 184270) Number of computed successors: 221950 Max successors for one state: 8 Number of times merged: 63736 Number of times stopped: 91499 Number of times breaked: 0 Total time for CPA algorithm: 46.276s (Max: 46.276s) Time for choose from waitlist: 0.154s Time for precision adjustment: 0.779s Time for transfer relation: 36.502s Time for merge operator: 4.005s Time for stop operator: 3.477s Time for adding to reached set: 0.524s CPA algorithm statistics ------------------------ Number of iterations: 189484 Max size of waitlist: 325 Average size of waitlist: 207 CallstackSortedWaitlist: 34.63 (sum: 180551, count: 5214, min: 0, max: 9645) AutomatonVariableWaitlist: 184270.00 (sum: 184270, count: 1, min: 184270, max: 184270) Number of computed successors: 221950 Max successors for one state: 8 Number of times merged: 63736 Number of times stopped: 91499 Number of times breaked: 0 Total time for CPA algorithm: 46.276s (Max: 46.276s) Time for choose from waitlist: 0.154s Time for precision adjustment: 0.779s Time for transfer relation: 36.502s Time for merge operator: 4.005s Time for stop operator: 3.477s Time for adding to reached set: 0.524s CPAchecker general statistics ----------------------------- Number of program locations: 1607 Number of CFA edges (per node): 1834 (count: 1607, min: 0, max: 4, avg: 1.14) Number of relevant variables: 198 Number of functions: 97 Number of loops (and loop nodes): 24 (sum: 144, min: 2, max: 10, avg: 6.00) Size of reached set: 130451 Number of partitions: 61489 Avg size of partitions: 2 Max size of partitions: 6 (with key [{main=N243 (before line 787) Function main called from node N235, stack depth 1 [afcaf0], stack [main] @@ 0, t2=N461 (after line 694) Function __VERIFIER_atomic_use1__cloned_function__2 called from node N891, stack depth 2 [52b16a46], stack [qrcu_reader2__cloned_function__2, __VERIFIER_atomic_use1__cloned_function__2] @@ 2, t3=N1148 (before line 771) Function qrcu_updater__cloned_function__3 called from node N1098, stack depth 1 [5a695c9c], stack [qrcu_updater__cloned_function__3] @@ 3}]) Number of target states: 0 Size of final wait list: 122 Time for analysis setup: 1.457s Time for loading CPAs: 0.234s Time for loading parser: 0.158s Time for CFA construction: 1.039s Time for parsing file(s): 0.433s Time for AST to CFA: 0.330s Time for CFA sanity check: 0.001s Time for post-processing: 0.240s Time for function pointers resolving: 0.006s 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: 0.117s Time for collecting variables: 0.070s Time for solving dependencies: 0.003s Time for building hierarchy: 0.001s Time for building classification: 0.043s Time for exporting data: 0.000s Time for Analysis: 46.973s CPU time for analysis: 87.350s Total time for CPAchecker: 48.430s Total CPU time for CPAchecker: 90.220s Time for statistics: 0.218s Time for Garbage Collector: 7.249s (in 52 runs) Garbage Collector(s) used: G1 Old Generation, G1 Young Generation Verification result: UNKNOWN, incomplete analysis.