./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_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/36-apron_21-traces-cluster-based_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 13967880 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/36-apron_21-traces-cluster-based_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_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-wip.fs.extract-columns-1396788-m [2024-02-02 16:13:32,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 16:13:32,708 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 16:13:32,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 16:13:32,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 16:13:32,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 16:13:32,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 16:13:32,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 16:13:32,770 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 16:13:32,774 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 16:13:32,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 16:13:32,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 16:13:32,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 16:13:32,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 16:13:32,776 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 16:13:32,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 16:13:32,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 16:13:32,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 16:13:32,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 16:13:32,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 16:13:32,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 16:13:32,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 16:13:32,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 16:13:32,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 16:13:32,779 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 16:13:32,779 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 16:13:32,779 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 16:13:32,779 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 16:13:32,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 16:13:32,780 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 16:13:32,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 16:13:32,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 16:13:32,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 16:13:32,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 16:13:32,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 16:13:32,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 16:13:32,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 16:13:32,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 16:13:32,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 16:13:32,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 16:13:32,783 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 16:13:32,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 16:13:32,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 16:13:32,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 16:13:32,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 16:13:32,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 16:13:32,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 16:13:32,984 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 16:13:32,984 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 16:13:32,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-02-02 16:13:34,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 16:13:34,431 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 16:13:34,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-02-02 16:13:34,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c2d5c8fe/e21b2e290cda4f3eb96d68a72863a89c/FLAGbd07d86c9 [2024-02-02 16:13:34,456 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c2d5c8fe/e21b2e290cda4f3eb96d68a72863a89c [2024-02-02 16:13:34,458 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 16:13:34,459 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 16:13:34,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_true.yml/witness.yml [2024-02-02 16:13:34,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 16:13:34,612 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 16:13:34,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 16:13:34,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 16:13:34,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 16:13:34,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 04:13:34" (1/2) ... [2024-02-02 16:13:34,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9adbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:13:34, skipping insertion in model container [2024-02-02 16:13:34,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 04:13:34" (1/2) ... [2024-02-02 16:13:34,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fe59137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:13:34, skipping insertion in model container [2024-02-02 16:13:34,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:13:34" (2/2) ... [2024-02-02 16:13:34,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9adbf8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:34, skipping insertion in model container [2024-02-02 16:13:34,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:13:34" (2/2) ... [2024-02-02 16:13:34,621 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 16:13:34,775 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 16:13:34,776 INFO L101 nessWitnessExtractor]: Location invariant before [L708-L708] ((-1016 <= y) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,776 INFO L101 nessWitnessExtractor]: Location invariant after [L712-L712] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,776 INFO L101 nessWitnessExtractor]: Location invariant before [L734-L734] (((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x) [2024-02-02 16:13:34,776 INFO L101 nessWitnessExtractor]: Location invariant before [L709-L709] ((-1016 <= y) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,777 INFO L101 nessWitnessExtractor]: Location invariant before [L702-L702] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,777 INFO L101 nessWitnessExtractor]: Location invariant before [L694-L694] ((((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && (h <= 2147483630)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,777 INFO L101 nessWitnessExtractor]: Location invariant before [L695-L695] ((((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && (h <= 2147483630)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,778 INFO L101 nessWitnessExtractor]: Location invariant before [L713-L713] (unsigned long )arg == 0UL [2024-02-02 16:13:34,778 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,778 INFO L101 nessWitnessExtractor]: Location invariant before [L705-L705] ((-1016 <= h) && (-999 <= g)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,778 INFO L101 nessWitnessExtractor]: Location invariant before [L716-L716] ((-1016 <= h) && (-999 <= g)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,778 INFO L101 nessWitnessExtractor]: Location invariant before [L704-L704] (unsigned long )arg == 0UL [2024-02-02 16:13:34,778 INFO L101 nessWitnessExtractor]: Location invariant before [L725-L725] (g == 42) && (h == 42) [2024-02-02 16:13:34,778 INFO L101 nessWitnessExtractor]: Location invariant before [L707-L707] ((((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,778 INFO L101 nessWitnessExtractor]: Location invariant before [L731-L731] (-1016 <= h) && (-999 <= g) [2024-02-02 16:13:34,779 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] (g == 42) && (h == 42) [2024-02-02 16:13:34,779 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] (((-999 <= g) && (-999 <= h)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,779 INFO L101 nessWitnessExtractor]: Location invariant before [L735-L735] (((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x) [2024-02-02 16:13:34,779 INFO L101 nessWitnessExtractor]: Location invariant after [L687-L687] (unsigned long )arg == 0UL [2024-02-02 16:13:34,779 INFO L101 nessWitnessExtractor]: Location invariant before [L689-L689] (-999 <= x) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,779 INFO L101 nessWitnessExtractor]: Location invariant before [L688-L688] (unsigned long )arg == 0UL [2024-02-02 16:13:34,780 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,780 INFO L101 nessWitnessExtractor]: Location invariant after [L725-L725] (g == 42) && (h == 42) [2024-02-02 16:13:34,780 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L692] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,780 INFO L101 nessWitnessExtractor]: Location invariant before [L736-L736] (((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x) [2024-02-02 16:13:34,780 INFO L101 nessWitnessExtractor]: Location invariant before [L719-L719] ((((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,780 INFO L101 nessWitnessExtractor]: Location invariant after [L724-L724] ((((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && (g == 42)) && (h == 42) [2024-02-02 16:13:34,781 INFO L101 nessWitnessExtractor]: Location invariant before [L732-L732] ((-1016 <= h) && (-999 <= g)) && (-999 <= x) [2024-02-02 16:13:34,781 INFO L101 nessWitnessExtractor]: Location invariant before [L717-L717] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,781 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L693] ((((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && (h <= 2147483630)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,781 INFO L101 nessWitnessExtractor]: Location invariant after [L713-L713] (unsigned long )arg == 0UL [2024-02-02 16:13:34,781 INFO L101 nessWitnessExtractor]: Location invariant before [L714-L714] (unsigned long )arg == 0UL [2024-02-02 16:13:34,781 INFO L101 nessWitnessExtractor]: Location invariant before [L720-L720] ((-1016 <= y) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,781 INFO L101 nessWitnessExtractor]: Location invariant after [L703-L703] (unsigned long )arg == 0UL [2024-02-02 16:13:34,781 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] ((((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && (g == 42)) && (h == 42) [2024-02-02 16:13:34,782 INFO L101 nessWitnessExtractor]: Location invariant before [L699-L699] (unsigned long )arg == 0UL [2024-02-02 16:13:34,782 INFO L101 nessWitnessExtractor]: Location invariant before [L738-L738] (-1016 <= y) && (-999 <= x) [2024-02-02 16:13:34,782 INFO L101 nessWitnessExtractor]: Location invariant before [L712-L712] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,783 INFO L101 nessWitnessExtractor]: Location invariant before [L703-L703] (unsigned long )arg == 0UL [2024-02-02 16:13:34,783 INFO L101 nessWitnessExtractor]: Location invariant before [L687-L687] (unsigned long )arg == 0UL [2024-02-02 16:13:34,783 INFO L101 nessWitnessExtractor]: Location invariant after [L702-L702] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,783 INFO L101 nessWitnessExtractor]: Location invariant before [L706-L706] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,783 INFO L101 nessWitnessExtractor]: Location invariant before [L737-L737] (-1016 <= y) && (-999 <= x) [2024-02-02 16:13:34,784 INFO L101 nessWitnessExtractor]: Location invariant before [L718-L718] ((((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,784 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] ((-1016 <= y) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,784 INFO L101 nessWitnessExtractor]: Location invariant before [L696-L696] (((-999 <= g) && (-999 <= h)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,784 INFO L101 nessWitnessExtractor]: Location invariant before [L715-L715] ((-1016 <= h) && (-999 <= g)) && ((unsigned long )arg == 0UL) [2024-02-02 16:13:34,784 INFO L101 nessWitnessExtractor]: Location invariant before [L733-L733] (((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x) [2024-02-02 16:13:34,830 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-02 16:13:34,967 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/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-02-02 16:13:35,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 16:13:35,122 INFO L204 MainTranslator]: Completed pre-run [2024-02-02 16:13:35,130 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/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-02-02 16:13:35,151 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-02 16:13:35,152 WARN L424 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() 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 [2024-02-02 16:13:35,194 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-02 16:13:35,194 WARN L424 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry [2024-02-02 16:13:35,194 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-02 16:13:35,194 WARN L424 MainDispatcher]: Unable to annotate y = __VERIFIER_nondet_int() with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 16:13:35,199 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-02 16:13:35,199 WARN L424 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry [2024-02-02 16:13:35,199 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-02 16:13:35,200 WARN L424 MainDispatcher]: Unable to annotate y = __VERIFIER_nondet_int() 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 [2024-02-02 16:13:35,205 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-02 16:13:35,205 WARN L424 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry [2024-02-02 16:13:35,205 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-02 16:13:35,205 WARN L424 MainDispatcher]: Unable to annotate y = __VERIFIER_nondet_int() 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 [2024-02-02 16:13:35,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 16:13:35,247 INFO L208 MainTranslator]: Completed translation [2024-02-02 16:13:35,247 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35 WrapperNode [2024-02-02 16:13:35,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 16:13:35,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 16:13:35,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 16:13:35,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 16:13:35,253 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 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,265 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 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,289 INFO L138 Inliner]: procedures = 166, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 172 [2024-02-02 16:13:35,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 16:13:35,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 16:13:35,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 16:13:35,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 16:13:35,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,314 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 5, 5, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0, 0]. The 3 writes are split as follows [0, 0, 0, 1, 1, 1]. [2024-02-02 16:13:35,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 16:13:35,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 16:13:35,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 16:13:35,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 16:13:35,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (1/1) ... [2024-02-02 16:13:35,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 16:13:35,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 16:13:35,446 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) [2024-02-02 16:13:35,454 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 [2024-02-02 16:13:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-02 16:13:35,479 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-02 16:13:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 16:13:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 16:13:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 16:13:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 16:13:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 16:13:35,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-02 16:13:35,480 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 16:13:35,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 16:13:35,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 16:13:35,481 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-02-02 16:13:35,481 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-02-02 16:13:35,481 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-02 16:13:35,481 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-02 16:13:35,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 16:13:35,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 16:13:35,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 16:13:35,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 16:13:35,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 16:13:35,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 16:13:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-02 16:13:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 16:13:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 16:13:35,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 16:13:35,485 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 16:13:35,600 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 16:13:35,603 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 16:13:35,935 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 16:13:35,936 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 16:13:36,069 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 16:13:36,069 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 16:13:36,069 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 04:13:36 BoogieIcfgContainer [2024-02-02 16:13:36,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 16:13:36,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 16:13:36,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 16:13:36,073 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 16:13:36,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 04:13:34" (1/4) ... [2024-02-02 16:13:36,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff30d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 04:13:36, skipping insertion in model container [2024-02-02 16:13:36,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:13:34" (2/4) ... [2024-02-02 16:13:36,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff30d2e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 04:13:36, skipping insertion in model container [2024-02-02 16:13:36,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:13:35" (3/4) ... [2024-02-02 16:13:36,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff30d2e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 04:13:36, skipping insertion in model container [2024-02-02 16:13:36,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 04:13:36" (4/4) ... [2024-02-02 16:13:36,075 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-02-02 16:13:36,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 16:13:36,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-02-02 16:13:36,088 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 16:13:36,159 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 16:13:36,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 135 transitions, 282 flow [2024-02-02 16:13:36,267 INFO L124 PetriNetUnfolderBase]: 5/132 cut-off events. [2024-02-02 16:13:36,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:13:36,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 132 events. 5/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 455 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2024-02-02 16:13:36,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 135 transitions, 282 flow [2024-02-02 16:13:36,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 132 transitions, 273 flow [2024-02-02 16:13:36,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 16:13:36,302 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;@684432c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 16:13:36,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2024-02-02 16:13:36,309 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 16:13:36,310 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 16:13:36,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:13:36,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:13:36,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 16:13:36,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-02-02 16:13:36,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:13:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash 16051, now seen corresponding path program 1 times [2024-02-02 16:13:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:13:36,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964249252] [2024-02-02 16:13:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:13:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:13:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:13:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:13:36,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:13:36,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964249252] [2024-02-02 16:13:36,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964249252] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:13:36,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:13:36,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 16:13:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931811342] [2024-02-02 16:13:36,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:13:36,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 16:13:36,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:13:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 16:13:36,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 16:13:36,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 135 [2024-02-02 16:13:36,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 132 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2024-02-02 16:13:36,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:13:36,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 135 [2024-02-02 16:13:36,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:13:44,500 INFO L124 PetriNetUnfolderBase]: 46805/94352 cut-off events. [2024-02-02 16:13:44,500 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-02-02 16:13:44,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159209 conditions, 94352 events. 46805/94352 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 2146. Compared 1043741 event pairs, 17077 based on Foata normal form. 5950/90681 useless extension candidates. Maximal degree in co-relation 159196. Up to 41670 conditions per place. [2024-02-02 16:13:45,190 INFO L140 encePairwiseOnDemand]: 127/135 looper letters, 82 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2024-02-02 16:13:45,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 162 transitions, 507 flow [2024-02-02 16:13:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 16:13:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 16:13:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2024-02-02 16:13:45,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8320987654320988 [2024-02-02 16:13:45,203 INFO L175 Difference]: Start difference. First operand has 137 places, 132 transitions, 273 flow. Second operand 3 states and 337 transitions. [2024-02-02 16:13:45,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 162 transitions, 507 flow [2024-02-02 16:13:45,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 162 transitions, 502 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 16:13:45,212 INFO L231 Difference]: Finished difference. Result has 136 places, 127 transitions, 268 flow [2024-02-02 16:13:45,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=136, PETRI_TRANSITIONS=127} [2024-02-02 16:13:45,215 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -1 predicate places. [2024-02-02 16:13:45,216 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 127 transitions, 268 flow [2024-02-02 16:13:45,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2024-02-02 16:13:45,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:13:45,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 16:13:45,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 16:13:45,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-02-02 16:13:45,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:13:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash 478867177, now seen corresponding path program 1 times [2024-02-02 16:13:45,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:13:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418400383] [2024-02-02 16:13:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:13:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:13:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:13:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:13:45,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:13:45,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418400383] [2024-02-02 16:13:45,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418400383] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:13:45,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:13:45,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:13:45,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472734993] [2024-02-02 16:13:45,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:13:45,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:13:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:13:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:13:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:13:45,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 135 [2024-02-02 16:13:45,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 127 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-02-02 16:13:45,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:13:45,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 135 [2024-02-02 16:13:45,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:13:52,764 INFO L124 PetriNetUnfolderBase]: 44688/95177 cut-off events. [2024-02-02 16:13:52,765 INFO L125 PetriNetUnfolderBase]: For 1307/1307 co-relation queries the response was YES. [2024-02-02 16:13:52,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159838 conditions, 95177 events. 44688/95177 cut-off events. For 1307/1307 co-relation queries the response was YES. Maximal size of possible extension queue 2140. Compared 1095202 event pairs, 2232 based on Foata normal form. 1307/86619 useless extension candidates. Maximal degree in co-relation 159825. Up to 58140 conditions per place. [2024-02-02 16:13:53,355 INFO L140 encePairwiseOnDemand]: 131/135 looper letters, 80 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2024-02-02 16:13:53,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 159 transitions, 500 flow [2024-02-02 16:13:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:13:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:13:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2024-02-02 16:13:53,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2024-02-02 16:13:53,362 INFO L175 Difference]: Start difference. First operand has 136 places, 127 transitions, 268 flow. Second operand 4 states and 408 transitions. [2024-02-02 16:13:53,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 159 transitions, 500 flow [2024-02-02 16:13:53,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 159 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:13:53,626 INFO L231 Difference]: Finished difference. Result has 135 places, 125 transitions, 264 flow [2024-02-02 16:13:53,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=135, PETRI_TRANSITIONS=125} [2024-02-02 16:13:53,627 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -2 predicate places. [2024-02-02 16:13:53,627 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 125 transitions, 264 flow [2024-02-02 16:13:53,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-02-02 16:13:53,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:13:53,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:13:53,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 16:13:53,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-02-02 16:13:53,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:13:53,630 INFO L85 PathProgramCache]: Analyzing trace with hash 629877580, now seen corresponding path program 1 times [2024-02-02 16:13:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:13:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140257456] [2024-02-02 16:13:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:13:53,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:13:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:13:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:13:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:13:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140257456] [2024-02-02 16:13:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140257456] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:13:53,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:13:53,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:13:53,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787426935] [2024-02-02 16:13:53,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:13:53,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:13:53,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:13:53,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:13:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:13:53,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 135 [2024-02-02 16:13:53,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 125 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-02-02 16:13:53,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:13:53,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 135 [2024-02-02 16:13:53,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:14:02,723 INFO L124 PetriNetUnfolderBase]: 76530/127741 cut-off events. [2024-02-02 16:14:02,723 INFO L125 PetriNetUnfolderBase]: For 1306/1306 co-relation queries the response was YES. [2024-02-02 16:14:03,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236187 conditions, 127741 events. 76530/127741 cut-off events. For 1306/1306 co-relation queries the response was YES. Maximal size of possible extension queue 2538. Compared 1207256 event pairs, 5770 based on Foata normal form. 0/124900 useless extension candidates. Maximal degree in co-relation 236174. Up to 82365 conditions per place. [2024-02-02 16:14:03,725 INFO L140 encePairwiseOnDemand]: 132/135 looper letters, 124 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2024-02-02 16:14:03,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 193 transitions, 660 flow [2024-02-02 16:14:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:14:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:14:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 411 transitions. [2024-02-02 16:14:03,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7611111111111111 [2024-02-02 16:14:03,728 INFO L175 Difference]: Start difference. First operand has 135 places, 125 transitions, 264 flow. Second operand 4 states and 411 transitions. [2024-02-02 16:14:03,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 193 transitions, 660 flow [2024-02-02 16:14:03,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 193 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:14:03,738 INFO L231 Difference]: Finished difference. Result has 135 places, 124 transitions, 263 flow [2024-02-02 16:14:03,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2024-02-02 16:14:03,739 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -2 predicate places. [2024-02-02 16:14:03,739 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 263 flow [2024-02-02 16:14:03,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-02-02 16:14:03,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:14:03,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:14:03,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 16:14:03,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-02-02 16:14:03,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:14:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash 624819998, now seen corresponding path program 1 times [2024-02-02 16:14:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:14:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78075696] [2024-02-02 16:14:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:14:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:14:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:14:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:14:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:14:03,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78075696] [2024-02-02 16:14:03,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78075696] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:14:03,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:14:03,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:14:03,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826849527] [2024-02-02 16:14:03,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:14:03,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:14:03,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:14:03,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:14:03,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:14:03,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 135 [2024-02-02 16:14:03,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-02-02 16:14:03,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:14:03,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 135 [2024-02-02 16:14:03,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:14:10,814 INFO L124 PetriNetUnfolderBase]: 44688/88430 cut-off events. [2024-02-02 16:14:10,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:14:11,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153035 conditions, 88430 events. 44688/88430 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2066. Compared 969055 event pairs, 23399 based on Foata normal form. 1885/81822 useless extension candidates. Maximal degree in co-relation 153023. Up to 56456 conditions per place. [2024-02-02 16:14:11,404 INFO L140 encePairwiseOnDemand]: 132/135 looper letters, 92 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2024-02-02 16:14:11,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 169 transitions, 547 flow [2024-02-02 16:14:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:14:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:14:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 423 transitions. [2024-02-02 16:14:11,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2024-02-02 16:14:11,406 INFO L175 Difference]: Start difference. First operand has 135 places, 124 transitions, 263 flow. Second operand 4 states and 423 transitions. [2024-02-02 16:14:11,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 169 transitions, 547 flow [2024-02-02 16:14:11,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 169 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:14:11,429 INFO L231 Difference]: Finished difference. Result has 135 places, 123 transitions, 262 flow [2024-02-02 16:14:11,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=135, PETRI_TRANSITIONS=123} [2024-02-02 16:14:11,430 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -2 predicate places. [2024-02-02 16:14:11,430 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 123 transitions, 262 flow [2024-02-02 16:14:11,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-02-02 16:14:11,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:14:11,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:14:11,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 16:14:11,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t3_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-02-02 16:14:11,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:14:11,431 INFO L85 PathProgramCache]: Analyzing trace with hash -846635288, now seen corresponding path program 1 times [2024-02-02 16:14:11,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:14:11,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108943592] [2024-02-02 16:14:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:14:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:14:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:14:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:14:11,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:14:11,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108943592] [2024-02-02 16:14:11,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108943592] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:14:11,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:14:11,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:14:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885221103] [2024-02-02 16:14:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:14:11,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:14:11,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:14:11,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:14:11,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:14:11,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 135 [2024-02-02 16:14:11,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 123 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 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) [2024-02-02 16:14:11,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:14:11,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 135 [2024-02-02 16:14:11,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand