./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-ab2e0ac-m [2024-01-29 14:16:34,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:16:34,951 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:16:34,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:16:34,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:16:34,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:16:34,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:16:34,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:16:34,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:16:34,981 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:16:34,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:16:34,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:16:34,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:16:34,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:16:34,984 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:16:34,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:16:34,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:16:34,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:16:34,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:16:34,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:16:34,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:16:34,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:16:34,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:16:34,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:16:34,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:16:34,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:16:34,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:16:34,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:16:34,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:16:34,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:16:34,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:16:34,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:16:34,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:16:34,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:16:34,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:16:34,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:16:34,989 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:16:34,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:16:34,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:16:34,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:16:34,990 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:16:34,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:16:34,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:16:34,991 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:16:35,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:16:35,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:16:35,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:16:35,225 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:16:35,226 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:16:35,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-01-29 14:16:36,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:16:36,719 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:16:36,733 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-01-29 14:16:36,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ebf6af78/c5bf375e5b1e48428179a9aa01970883/FLAG28def29aa [2024-01-29 14:16:36,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ebf6af78/c5bf375e5b1e48428179a9aa01970883 [2024-01-29 14:16:36,764 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:16:36,765 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:16:36,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_true.yml/witness.yml [2024-01-29 14:16:36,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:16:36,875 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:16:36,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:16:36,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:16:36,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:16:36,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:16:36" (1/2) ... [2024-01-29 14:16:36,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a945fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:16:36, skipping insertion in model container [2024-01-29 14:16:36,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:16:36" (1/2) ... [2024-01-29 14:16:36,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1acc3554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:16:36, skipping insertion in model container [2024-01-29 14:16:36,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:16:36" (2/2) ... [2024-01-29 14:16:36,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a945fb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:36, skipping insertion in model container [2024-01-29 14:16:36,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:16:36" (2/2) ... [2024-01-29 14:16:36,884 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:16:36,951 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:16:36,953 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] g2 == 0 [2024-01-29 14:16:36,953 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (unsigned long )arg == 0UL [2024-01-29 14:16:36,953 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] g1 == 0 [2024-01-29 14:16:36,953 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] g2 == 0 [2024-01-29 14:16:36,954 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] (unsigned long )arg == 0UL [2024-01-29 14:16:36,954 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] g1 == 0 [2024-01-29 14:16:36,955 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] g2 == 0 [2024-01-29 14:16:36,955 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] g1 == 0 [2024-01-29 14:16:36,955 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] g1 == 0 [2024-01-29 14:16:36,955 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] g2 == 0 [2024-01-29 14:16:36,955 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] g1 == 1 [2024-01-29 14:16:36,955 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-01-29 14:16:36,955 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] g2 == 0 [2024-01-29 14:16:36,955 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] (unsigned long )arg == 0UL [2024-01-29 14:16:36,956 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] g1 == 0 [2024-01-29 14:16:36,956 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] g1 == 1 [2024-01-29 14:16:36,956 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] g2 == 0 [2024-01-29 14:16:36,956 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (unsigned long )arg == 0UL [2024-01-29 14:16:36,956 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] g2 == 0 [2024-01-29 14:16:36,956 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] g1 == 0 [2024-01-29 14:16:36,956 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] g1 == 0 [2024-01-29 14:16:36,957 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] (unsigned long )arg == 0UL [2024-01-29 14:16:36,957 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] g2 == 1 [2024-01-29 14:16:36,957 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] g1 == 0 [2024-01-29 14:16:36,957 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] g2 == 0 [2024-01-29 14:16:36,958 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] g1 == 0 [2024-01-29 14:16:36,958 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] g2 == 0 [2024-01-29 14:16:36,958 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] g1 == 0 [2024-01-29 14:16:36,958 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] g2 == 0 [2024-01-29 14:16:36,958 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (unsigned long )arg == 0UL [2024-01-29 14:16:36,958 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] g1 == 0 [2024-01-29 14:16:36,958 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] (unsigned long )arg == 0UL [2024-01-29 14:16:36,958 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] (unsigned long )arg == 0UL [2024-01-29 14:16:36,959 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] g2 == 1 [2024-01-29 14:16:36,959 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] g1 == 0 [2024-01-29 14:16:36,959 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] g1 == 0 [2024-01-29 14:16:36,959 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] g2 == 0 [2024-01-29 14:16:36,959 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] g1 == 0 [2024-01-29 14:16:36,960 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] g1 == 0 [2024-01-29 14:16:36,960 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] g2 == 0 [2024-01-29 14:16:36,960 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] g2 == 0 [2024-01-29 14:16:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (unsigned long )arg == 0UL [2024-01-29 14:16:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-01-29 14:16:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] g1 == 1 [2024-01-29 14:16:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] (unsigned long )arg == 0UL [2024-01-29 14:16:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] g2 == 0 [2024-01-29 14:16:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] g2 == 0 [2024-01-29 14:16:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (unsigned long )arg == 0UL [2024-01-29 14:16:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] g2 == 0 [2024-01-29 14:16:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] g1 == 0 [2024-01-29 14:16:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] g2 == 0 [2024-01-29 14:16:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] g1 == 0 [2024-01-29 14:16:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] (unsigned long )arg == 0UL [2024-01-29 14:16:36,963 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] g1 == 0 [2024-01-29 14:16:36,963 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] g2 == 0 [2024-01-29 14:16:36,963 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] g1 == 0 [2024-01-29 14:16:36,964 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (unsigned long )arg == 0UL [2024-01-29 14:16:36,964 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] g2 == 1 [2024-01-29 14:16:36,964 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] (unsigned long )arg == 0UL [2024-01-29 14:16:36,964 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] g1 == 0 [2024-01-29 14:16:36,965 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] g2 == 0 [2024-01-29 14:16:36,965 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] g1 == 0 [2024-01-29 14:16:36,965 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] g1 == 0 [2024-01-29 14:16:36,965 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] g2 == 0 [2024-01-29 14:16:36,965 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] g2 == 0 [2024-01-29 14:16:36,965 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] g1 == 0 [2024-01-29 14:16:36,965 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L713] g1 == 0 [2024-01-29 14:16:36,965 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] g1 == 0 [2024-01-29 14:16:36,965 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] g2 == 0 [2024-01-29 14:16:36,966 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] g1 == 0 [2024-01-29 14:16:36,966 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-29 14:16:36,966 INFO L98 nessWitnessExtractor]: Location invariant before [L686-L686] (unsigned long )arg == 0UL [2024-01-29 14:16:37,002 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:16:37,149 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2024-01-29 14:16:37,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:16:37,307 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 14:16:37,320 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2024-01-29 14:16:37,321 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:16:37,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:16:37,432 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:16:37,432 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37 WrapperNode [2024-01-29 14:16:37,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:16:37,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:16:37,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:16:37,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:16:37,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,506 INFO L138 Inliner]: procedures = 164, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2024-01-29 14:16:37,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:16:37,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:16:37,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:16:37,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:16:37,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,552 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 5, 5, 5, 2, 2]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0, 0]. The 2 writes are split as follows [0, 0, 0, 0, 1, 1]. [2024-01-29 14:16:37,567 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,592 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:16:37,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:16:37,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:16:37,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:16:37,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (1/1) ... [2024-01-29 14:16:37,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:16:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:16:37,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-29 14:16:37,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-29 14:16:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 14:16:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 14:16:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 14:16:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-29 14:16:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-29 14:16:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-29 14:16:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-01-29 14:16:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-01-29 14:16:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:16:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:16:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:16:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-29 14:16:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-29 14:16:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-29 14:16:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 14:16:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:16:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:16:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-29 14:16:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-29 14:16:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:16:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:16:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:16:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:16:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-29 14:16:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-29 14:16:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-29 14:16:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 14:16:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:16:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:16:37,745 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 14:16:37,900 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:16:37,903 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:16:38,253 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:16:38,253 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:16:38,402 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:16:38,403 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-29 14:16:38,404 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:16:38 BoogieIcfgContainer [2024-01-29 14:16:38,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:16:38,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:16:38,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:16:38,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:16:38,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:16:36" (1/4) ... [2024-01-29 14:16:38,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b17f5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:16:38, skipping insertion in model container [2024-01-29 14:16:38,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:16:36" (2/4) ... [2024-01-29 14:16:38,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b17f5b2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:16:38, skipping insertion in model container [2024-01-29 14:16:38,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:16:37" (3/4) ... [2024-01-29 14:16:38,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b17f5b2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:16:38, skipping insertion in model container [2024-01-29 14:16:38,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:16:38" (4/4) ... [2024-01-29 14:16:38,411 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-01-29 14:16:38,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:16:38,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-01-29 14:16:38,425 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:16:38,498 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 14:16:38,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 217 transitions, 448 flow [2024-01-29 14:16:38,606 INFO L124 PetriNetUnfolderBase]: 4/215 cut-off events. [2024-01-29 14:16:38,607 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:16:38,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 215 events. 4/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 540 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2024-01-29 14:16:38,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 217 transitions, 448 flow [2024-01-29 14:16:38,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 213 transitions, 435 flow [2024-01-29 14:16:38,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:16:38,639 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2344f5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:16:38,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 114 error locations. [2024-01-29 14:16:38,641 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:16:38,641 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 14:16:38,641 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:16:38,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:16:38,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 14:16:38,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-01-29 14:16:38,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:16:38,647 INFO L85 PathProgramCache]: Analyzing trace with hash 21582, now seen corresponding path program 1 times [2024-01-29 14:16:38,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:16:38,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208487919] [2024-01-29 14:16:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:16:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:16:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:16:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:16:38,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:16:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208487919] [2024-01-29 14:16:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208487919] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:16:38,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:16:38,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:16:38,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113963678] [2024-01-29 14:16:38,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:16:38,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:16:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:16:38,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:16:38,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:16:38,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 217 [2024-01-29 14:16:38,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 213 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:16:38,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:16:38,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 217 [2024-01-29 14:16:38,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:16:44,869 INFO L124 PetriNetUnfolderBase]: 24169/67237 cut-off events. [2024-01-29 14:16:44,870 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-01-29 14:16:45,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107717 conditions, 67237 events. 24169/67237 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 845940 event pairs, 13473 based on Foata normal form. 3505/57527 useless extension candidates. Maximal degree in co-relation 107461. Up to 25886 conditions per place. [2024-01-29 14:16:45,499 INFO L140 encePairwiseOnDemand]: 171/217 looper letters, 112 selfloop transitions, 19 changer transitions 0/254 dead transitions. [2024-01-29 14:16:45,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 254 transitions, 782 flow [2024-01-29 14:16:45,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:16:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:16:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2024-01-29 14:16:45,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8248847926267281 [2024-01-29 14:16:45,515 INFO L175 Difference]: Start difference. First operand has 216 places, 213 transitions, 435 flow. Second operand 3 states and 537 transitions. [2024-01-29 14:16:45,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 254 transitions, 782 flow [2024-01-29 14:16:45,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 254 transitions, 775 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 14:16:45,532 INFO L231 Difference]: Finished difference. Result has 213 places, 222 transitions, 596 flow [2024-01-29 14:16:45,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=596, PETRI_PLACES=213, PETRI_TRANSITIONS=222} [2024-01-29 14:16:45,536 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, -3 predicate places. [2024-01-29 14:16:45,537 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 222 transitions, 596 flow [2024-01-29 14:16:45,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:16:45,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:16:45,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-29 14:16:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:16:45,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-01-29 14:16:45,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:16:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash 669634, now seen corresponding path program 1 times [2024-01-29 14:16:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:16:45,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570317784] [2024-01-29 14:16:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:16:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:16:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:16:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:16:45,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:16:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570317784] [2024-01-29 14:16:45,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570317784] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:16:45,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:16:45,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:16:45,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420105250] [2024-01-29 14:16:45,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:16:45,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:16:45,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:16:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:16:45,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:16:45,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 217 [2024-01-29 14:16:45,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 222 transitions, 596 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:16:45,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:16:45,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 217 [2024-01-29 14:16:45,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:16:57,263 INFO L124 PetriNetUnfolderBase]: 53727/153489 cut-off events. [2024-01-29 14:16:57,266 INFO L125 PetriNetUnfolderBase]: For 18347/19319 co-relation queries the response was YES. [2024-01-29 14:16:57,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278063 conditions, 153489 events. 53727/153489 cut-off events. For 18347/19319 co-relation queries the response was YES. Maximal size of possible extension queue 2481. Compared 2157458 event pairs, 33091 based on Foata normal form. 5724/137909 useless extension candidates. Maximal degree in co-relation 262379. Up to 64929 conditions per place. [2024-01-29 14:16:58,482 INFO L140 encePairwiseOnDemand]: 169/217 looper letters, 124 selfloop transitions, 23 changer transitions 0/271 dead transitions. [2024-01-29 14:16:58,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 271 transitions, 1010 flow [2024-01-29 14:16:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:16:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:16:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2024-01-29 14:16:58,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7972350230414746 [2024-01-29 14:16:58,484 INFO L175 Difference]: Start difference. First operand has 213 places, 222 transitions, 596 flow. Second operand 3 states and 519 transitions. [2024-01-29 14:16:58,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 271 transitions, 1010 flow [2024-01-29 14:16:58,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 271 transitions, 964 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:16:58,994 INFO L231 Difference]: Finished difference. Result has 210 places, 236 transitions, 758 flow [2024-01-29 14:16:58,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=758, PETRI_PLACES=210, PETRI_TRANSITIONS=236} [2024-01-29 14:16:58,995 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, -6 predicate places. [2024-01-29 14:16:58,995 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 236 transitions, 758 flow [2024-01-29 14:16:58,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:16:58,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:16:58,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 14:16:58,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:16:58,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-01-29 14:16:58,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:16:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1524920711, now seen corresponding path program 1 times [2024-01-29 14:16:58,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:16:58,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877340161] [2024-01-29 14:16:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:16:58,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:16:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:16:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:16:59,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:16:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877340161] [2024-01-29 14:16:59,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877340161] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:16:59,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:16:59,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:16:59,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394461446] [2024-01-29 14:16:59,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:16:59,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:16:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:16:59,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:16:59,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:16:59,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 217 [2024-01-29 14:16:59,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 236 transitions, 758 flow. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:16:59,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:16:59,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 217 [2024-01-29 14:16:59,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:17:02,529 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([789] L688-2-->L689: Formula: (and (= v_~g1~0_141 (+ v_~g1~0_142 1)) (= v_~g2~0_139 0)) InVars {~g2~0=v_~g2~0_139, ~g1~0=v_~g1~0_142} OutVars{~g2~0=v_~g2~0_139, ~g1~0=v_~g1~0_141, t_funThread1of1ForFork0_#t~post3=|v_t_funThread1of1ForFork0_#t~post3_1|} AuxVars[] AssignedVars[~g1~0, t_funThread1of1ForFork0_#t~post3][42], [Black: 223#true, 32#L702-1true, Black: 230#(= ~g1~0 0), 199#L720-2true, 187#L689true, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse, 228#true]) [2024-01-29 14:17:02,529 INFO L294 olderBase$Statistics]: this new event has 69 ancestors and is not cut-off event [2024-01-29 14:17:02,530 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is not cut-off event [2024-01-29 14:17:02,530 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is not cut-off event [2024-01-29 14:17:02,530 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is not cut-off event [2024-01-29 14:17:03,616 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([658] L721-1-->L19-13: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_45|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35| (ite (= v_~g2~0_125 0) 1 0)) (= v_~g1~0_119 0)) InVars {~g2~0=v_~g2~0_125, ~g1~0=v_~g1~0_119} OutVars{~g2~0=v_~g2~0_125, ~g1~0=v_~g1~0_119, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_45|, ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][190], [112#L19-13true, Black: 223#true, 32#L702-1true, 138#L689-6true, Black: 228#true, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse, 230#(= ~g1~0 0)]) [2024-01-29 14:17:03,616 INFO L294 olderBase$Statistics]: this new event has 77 ancestors and is cut-off event [2024-01-29 14:17:03,617 INFO L297 olderBase$Statistics]: existing Event has 77 ancestors and is cut-off event [2024-01-29 14:17:03,617 INFO L297 olderBase$Statistics]: existing Event has 77 ancestors and is cut-off event [2024-01-29 14:17:03,617 INFO L297 olderBase$Statistics]: existing Event has 77 ancestors and is cut-off event [2024-01-29 14:17:04,295 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([658] L721-1-->L19-13: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_45|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35| (ite (= v_~g2~0_125 0) 1 0)) (= v_~g1~0_119 0)) InVars {~g2~0=v_~g2~0_125, ~g1~0=v_~g1~0_119} OutVars{~g2~0=v_~g2~0_125, ~g1~0=v_~g1~0_119, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_45|, ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][190], [112#L19-13true, Black: 223#true, 20#L703-1true, Black: 228#true, 138#L689-6true, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse, 230#(= ~g1~0 0)]) [2024-01-29 14:17:04,295 INFO L294 olderBase$Statistics]: this new event has 80 ancestors and is cut-off event [2024-01-29 14:17:04,295 INFO L297 olderBase$Statistics]: existing Event has 80 ancestors and is cut-off event [2024-01-29 14:17:04,295 INFO L297 olderBase$Statistics]: existing Event has 80 ancestors and is cut-off event [2024-01-29 14:17:04,296 INFO L297 olderBase$Statistics]: existing Event has 80 ancestors and is cut-off event [2024-01-29 14:17:04,395 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([658] L721-1-->L19-13: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_45|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35| (ite (= v_~g2~0_125 0) 1 0)) (= v_~g1~0_119 0)) InVars {~g2~0=v_~g2~0_125, ~g1~0=v_~g1~0_119} OutVars{~g2~0=v_~g2~0_125, ~g1~0=v_~g1~0_119, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_45|, ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][190], [112#L19-13true, Black: 223#true, 32#L702-1true, 28#L690-5true, Black: 228#true, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse, 230#(= ~g1~0 0)]) [2024-01-29 14:17:04,395 INFO L294 olderBase$Statistics]: this new event has 81 ancestors and is cut-off event [2024-01-29 14:17:04,395 INFO L297 olderBase$Statistics]: existing Event has 81 ancestors and is cut-off event [2024-01-29 14:17:04,395 INFO L297 olderBase$Statistics]: existing Event has 81 ancestors and is cut-off event [2024-01-29 14:17:04,396 INFO L297 olderBase$Statistics]: existing Event has 81 ancestors and is cut-off event [2024-01-29 14:17:04,752 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([658] L721-1-->L19-13: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_45|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35| (ite (= v_~g2~0_125 0) 1 0)) (= v_~g1~0_119 0)) InVars {~g2~0=v_~g2~0_125, ~g1~0=v_~g1~0_119} OutVars{~g2~0=v_~g2~0_125, ~g1~0=v_~g1~0_119, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_45|, ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_35|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][190], [112#L19-13true, Black: 223#true, 20#L703-1true, 28#L690-5true, Black: 228#true, t2_funThread1of1ForFork1InUse, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), 230#(= ~g1~0 0)]) [2024-01-29 14:17:04,752 INFO L294 olderBase$Statistics]: this new event has 84 ancestors and is cut-off event [2024-01-29 14:17:04,752 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2024-01-29 14:17:04,752 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2024-01-29 14:17:04,753 INFO L297 olderBase$Statistics]: existing Event has 84 ancestors and is cut-off event [2024-01-29 14:17:08,409 INFO L124 PetriNetUnfolderBase]: 32933/113858 cut-off events. [2024-01-29 14:17:08,410 INFO L125 PetriNetUnfolderBase]: For 25211/26764 co-relation queries the response was YES. [2024-01-29 14:17:08,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207975 conditions, 113858 events. 32933/113858 cut-off events. For 25211/26764 co-relation queries the response was YES. Maximal size of possible extension queue 2036. Compared 1689376 event pairs, 10661 based on Foata normal form. 11024/108210 useless extension candidates. Maximal degree in co-relation 207781. Up to 37944 conditions per place. [2024-01-29 14:17:09,079 INFO L140 encePairwiseOnDemand]: 206/217 looper letters, 88 selfloop transitions, 2 changer transitions 0/263 dead transitions. [2024-01-29 14:17:09,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 263 transitions, 1012 flow [2024-01-29 14:17:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:17:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:17:09,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 706 transitions. [2024-01-29 14:17:09,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8133640552995391 [2024-01-29 14:17:09,082 INFO L175 Difference]: Start difference. First operand has 210 places, 236 transitions, 758 flow. Second operand 4 states and 706 transitions. [2024-01-29 14:17:09,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 263 transitions, 1012 flow [2024-01-29 14:17:09,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 263 transitions, 966 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:17:09,379 INFO L231 Difference]: Finished difference. Result has 202 places, 227 transitions, 698 flow [2024-01-29 14:17:09,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=202, PETRI_TRANSITIONS=227} [2024-01-29 14:17:09,380 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, -14 predicate places. [2024-01-29 14:17:09,380 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 227 transitions, 698 flow [2024-01-29 14:17:09,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:17:09,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:17:09,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:17:09,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:17:09,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-01-29 14:17:09,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:17:09,381 INFO L85 PathProgramCache]: Analyzing trace with hash -872625099, now seen corresponding path program 1 times [2024-01-29 14:17:09,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:17:09,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803205769] [2024-01-29 14:17:09,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:17:09,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:17:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:17:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:17:09,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:17:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803205769] [2024-01-29 14:17:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803205769] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:17:09,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:17:09,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:17:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091269077] [2024-01-29 14:17:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:17:09,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:17:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:17:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:17:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:17:09,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 217 [2024-01-29 14:17:09,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 227 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:17:09,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:17:09,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 217 [2024-01-29 14:17:09,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:17:10,762 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([736] L699-2-->L700: Formula: (and (= v_~g2~0_70 0) (= v_~g2~0_69 (+ v_~g2~0_70 1))) InVars {~g2~0=v_~g2~0_70} OutVars{~g2~0=v_~g2~0_69, t2_funThread1of1ForFork1_#t~post11=|v_t2_funThread1of1ForFork1_#t~post11_1|} AuxVars[] AssignedVars[~g2~0, t2_funThread1of1ForFork1_#t~post11][52], [Black: 225#(= ~g2~0 0), Black: 228#true, 244#(and (= |t2_funThread1of1ForFork1_#in~arg.base| 0) (= t2_funThread1of1ForFork1_~arg.base 0) (= |t2_funThread1of1ForFork1_#in~arg.offset| 0) (= t2_funThread1of1ForFork1_~arg.offset 0)), 198#L700true, 50#L719-1true, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse, 217#L689-1true]) [2024-01-29 14:17:10,762 INFO L294 olderBase$Statistics]: this new event has 55 ancestors and is not cut-off event [2024-01-29 14:17:10,762 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is not cut-off event [2024-01-29 14:17:10,762 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is not cut-off event [2024-01-29 14:17:10,762 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is not cut-off event [2024-01-29 14:17:11,889 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([736] L699-2-->L700: Formula: (and (= v_~g2~0_70 0) (= v_~g2~0_69 (+ v_~g2~0_70 1))) InVars {~g2~0=v_~g2~0_70} OutVars{~g2~0=v_~g2~0_69, t2_funThread1of1ForFork1_#t~post11=|v_t2_funThread1of1ForFork1_#t~post11_1|} AuxVars[] AssignedVars[~g2~0, t2_funThread1of1ForFork1_#t~post11][52], [211#L691-2true, Black: 225#(= ~g2~0 0), Black: 228#true, 244#(and (= |t2_funThread1of1ForFork1_#in~arg.base| 0) (= t2_funThread1of1ForFork1_~arg.base 0) (= |t2_funThread1of1ForFork1_#in~arg.offset| 0) (= t2_funThread1of1ForFork1_~arg.offset 0)), 198#L700true, 50#L719-1true, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse]) [2024-01-29 14:17:11,889 INFO L294 olderBase$Statistics]: this new event has 65 ancestors and is not cut-off event [2024-01-29 14:17:11,889 INFO L297 olderBase$Statistics]: existing Event has 65 ancestors and is not cut-off event [2024-01-29 14:17:11,889 INFO L297 olderBase$Statistics]: existing Event has 65 ancestors and is not cut-off event [2024-01-29 14:17:11,889 INFO L297 olderBase$Statistics]: existing Event has 65 ancestors and is not cut-off event [2024-01-29 14:17:14,295 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([736] L699-2-->L700: Formula: (and (= v_~g2~0_70 0) (= v_~g2~0_69 (+ v_~g2~0_70 1))) InVars {~g2~0=v_~g2~0_70} OutVars{~g2~0=v_~g2~0_69, t2_funThread1of1ForFork1_#t~post11=|v_t2_funThread1of1ForFork1_#t~post11_1|} AuxVars[] AssignedVars[~g2~0, t2_funThread1of1ForFork1_#t~post11][52], [171#L726-1true, Black: 225#(= ~g2~0 0), Black: 228#true, 244#(and (= |t2_funThread1of1ForFork1_#in~arg.base| 0) (= t2_funThread1of1ForFork1_~arg.base 0) (= |t2_funThread1of1ForFork1_#in~arg.offset| 0) (= t2_funThread1of1ForFork1_~arg.offset 0)), 198#L700true, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse, 217#L689-1true]) [2024-01-29 14:17:14,295 INFO L294 olderBase$Statistics]: this new event has 82 ancestors and is not cut-off event [2024-01-29 14:17:14,296 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is not cut-off event [2024-01-29 14:17:14,296 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is not cut-off event [2024-01-29 14:17:14,296 INFO L297 olderBase$Statistics]: existing Event has 82 ancestors and is not cut-off event [2024-01-29 14:17:14,746 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([678] L725-1-->L19-19: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_41| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_49|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_41| (ite (= v_~g1~0_123 0) 1 0)) (= v_~g2~0_129 0)) InVars {~g2~0=v_~g2~0_129, ~g1~0=v_~g1~0_123} OutVars{~g2~0=v_~g2~0_129, ~g1~0=v_~g1~0_123, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_49|, ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_41|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][226], [Black: 223#true, Black: 228#true, 41#L19-19true, 244#(and (= |t2_funThread1of1ForFork1_#in~arg.base| 0) (= t2_funThread1of1ForFork1_~arg.base 0) (= |t2_funThread1of1ForFork1_#in~arg.offset| 0) (= t2_funThread1of1ForFork1_~arg.offset 0)), 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse, 196#L701-5true, 217#L689-1true]) [2024-01-29 14:17:14,747 INFO L294 olderBase$Statistics]: this new event has 87 ancestors and is cut-off event [2024-01-29 14:17:14,747 INFO L297 olderBase$Statistics]: existing Event has 87 ancestors and is cut-off event [2024-01-29 14:17:14,747 INFO L297 olderBase$Statistics]: existing Event has 87 ancestors and is cut-off event [2024-01-29 14:17:14,747 INFO L297 olderBase$Statistics]: existing Event has 87 ancestors and is cut-off event [2024-01-29 14:17:15,522 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([736] L699-2-->L700: Formula: (and (= v_~g2~0_70 0) (= v_~g2~0_69 (+ v_~g2~0_70 1))) InVars {~g2~0=v_~g2~0_70} OutVars{~g2~0=v_~g2~0_69, t2_funThread1of1ForFork1_#t~post11=|v_t2_funThread1of1ForFork1_#t~post11_1|} AuxVars[] AssignedVars[~g2~0, t2_funThread1of1ForFork1_#t~post11][52], [211#L691-2true, 171#L726-1true, Black: 225#(= ~g2~0 0), Black: 228#true, 244#(and (= |t2_funThread1of1ForFork1_#in~arg.base| 0) (= t2_funThread1of1ForFork1_~arg.base 0) (= |t2_funThread1of1ForFork1_#in~arg.offset| 0) (= t2_funThread1of1ForFork1_~arg.offset 0)), 198#L700true, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse]) [2024-01-29 14:17:15,522 INFO L294 olderBase$Statistics]: this new event has 92 ancestors and is not cut-off event [2024-01-29 14:17:15,523 INFO L297 olderBase$Statistics]: existing Event has 92 ancestors and is not cut-off event [2024-01-29 14:17:15,523 INFO L297 olderBase$Statistics]: existing Event has 92 ancestors and is not cut-off event [2024-01-29 14:17:15,523 INFO L297 olderBase$Statistics]: existing Event has 92 ancestors and is not cut-off event [2024-01-29 14:17:15,537 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([678] L725-1-->L19-19: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_41| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_49|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_41| (ite (= v_~g1~0_123 0) 1 0)) (= v_~g2~0_129 0)) InVars {~g2~0=v_~g2~0_129, ~g1~0=v_~g1~0_123} OutVars{~g2~0=v_~g2~0_129, ~g1~0=v_~g1~0_123, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_49|, ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_41|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][226], [211#L691-2true, Black: 223#true, 41#L19-19true, Black: 228#true, 244#(and (= |t2_funThread1of1ForFork1_#in~arg.base| 0) (= t2_funThread1of1ForFork1_~arg.base 0) (= |t2_funThread1of1ForFork1_#in~arg.offset| 0) (= t2_funThread1of1ForFork1_~arg.offset 0)), 123#L700-6true, 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse]) [2024-01-29 14:17:15,538 INFO L294 olderBase$Statistics]: this new event has 93 ancestors and is cut-off event [2024-01-29 14:17:15,538 INFO L297 olderBase$Statistics]: existing Event has 93 ancestors and is cut-off event [2024-01-29 14:17:15,538 INFO L297 olderBase$Statistics]: existing Event has 93 ancestors and is cut-off event [2024-01-29 14:17:15,538 INFO L297 olderBase$Statistics]: existing Event has 93 ancestors and is cut-off event [2024-01-29 14:17:15,901 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([678] L725-1-->L19-19: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_41| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_49|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_41| (ite (= v_~g1~0_123 0) 1 0)) (= v_~g2~0_129 0)) InVars {~g2~0=v_~g2~0_129, ~g1~0=v_~g1~0_123} OutVars{~g2~0=v_~g2~0_129, ~g1~0=v_~g1~0_123, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_49|, ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_41|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][226], [211#L691-2true, Black: 223#true, Black: 228#true, 41#L19-19true, 244#(and (= |t2_funThread1of1ForFork1_#in~arg.base| 0) (= t2_funThread1of1ForFork1_~arg.base 0) (= |t2_funThread1of1ForFork1_#in~arg.offset| 0) (= t2_funThread1of1ForFork1_~arg.offset 0)), 238#(and (= t_funThread1of1ForFork0_~arg.base 0) (= |t_funThread1of1ForFork0_#in~arg.base| 0) (= |t_funThread1of1ForFork0_#in~arg.offset| 0) (= t_funThread1of1ForFork0_~arg.offset 0)), t2_funThread1of1ForFork1InUse, 196#L701-5true]) [2024-01-29 14:17:15,901 INFO L294 olderBase$Statistics]: this new event has 97 ancestors and is cut-off event [2024-01-29 14:17:15,902 INFO L297 olderBase$Statistics]: existing Event has 97 ancestors and is cut-off event [2024-01-29 14:17:15,902 INFO L297 olderBase$Statistics]: existing Event has 97 ancestors and is cut-off event [2024-01-29 14:17:15,902 INFO L297 olderBase$Statistics]: existing Event has 97 ancestors and is cut-off event [2024-01-29 14:17:17,084 INFO L124 PetriNetUnfolderBase]: 33024/107044 cut-off events. [2024-01-29 14:17:17,084 INFO L125 PetriNetUnfolderBase]: For 11941/12335 co-relation queries the response was YES. [2024-01-29 14:17:17,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193922 conditions, 107044 events. 33024/107044 cut-off events. For 11941/12335 co-relation queries the response was YES. Maximal size of possible extension queue 1933. Compared 1544577 event pairs, 11041 based on Foata normal form. 9681/100801 useless extension candidates. Maximal degree in co-relation 193904. Up to 36660 conditions per place. [2024-01-29 14:17:17,871 INFO L140 encePairwiseOnDemand]: 206/217 looper letters, 96 selfloop transitions, 2 changer transitions 0/262 dead transitions. [2024-01-29 14:17:17,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 262 transitions, 989 flow [2024-01-29 14:17:17,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:17:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:17:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 715 transitions. [2024-01-29 14:17:17,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8237327188940092 [2024-01-29 14:17:17,895 INFO L175 Difference]: Start difference. First operand has 202 places, 227 transitions, 698 flow. Second operand 4 states and 715 transitions. [2024-01-29 14:17:17,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 262 transitions, 989 flow [2024-01-29 14:17:17,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 262 transitions, 986 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:17:17,903 INFO L231 Difference]: Finished difference. Result has 194 places, 218 transitions, 681 flow [2024-01-29 14:17:17,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=681, PETRI_PLACES=194, PETRI_TRANSITIONS=218} [2024-01-29 14:17:17,905 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, -22 predicate places. [2024-01-29 14:17:17,905 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 218 transitions, 681 flow [2024-01-29 14:17:17,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:17:17,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:17:17,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:17:17,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:17:17,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-01-29 14:17:17,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:17:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash 830489441, now seen corresponding path program 1 times [2024-01-29 14:17:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:17:17,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114401786] [2024-01-29 14:17:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:17:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:17:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:17:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:17:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:17:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114401786] [2024-01-29 14:17:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114401786] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:17:18,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:17:18,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:17:18,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487790673] [2024-01-29 14:17:18,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:17:18,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:17:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:17:18,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:17:18,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:17:18,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 217 [2024-01-29 14:17:18,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 218 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:17:18,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:17:18,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 217 [2024-01-29 14:17:18,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand