./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-commit-1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/weaver/popl20-commit-1.wvr.c ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-commit-1.wvr.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.witness-ghost-b44c828-m [2024-05-12 10:53:31,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:53:31,876 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:53:31,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:53:31,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:53:31,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:53:31,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:53:31,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:53:31,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:53:31,914 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:53:31,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:53:31,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:53:31,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:53:31,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:53:31,918 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:53:31,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:53:31,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:53:31,919 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:53:31,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:53:31,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:53:31,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:53:31,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:53:31,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:53:31,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:53:31,920 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:53:31,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:53:31,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:53:31,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:53:31,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:53:31,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:53:31,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:53:31,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:53:31,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:53:31,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:53:31,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:53:31,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:53:31,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:53:31,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:53:31,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:53:31,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:53:31,924 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:53:31,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:53:31,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:53:31,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:53:32,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:53:32,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:53:32,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:53:32,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:53:32,154 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:53:32,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2024-05-12 10:53:33,193 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:53:33,348 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:53:33,349 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2024-05-12 10:53:33,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a155442f/343fb14fcdd441c79c1b9f51e39396cb/FLAGd3245053e [2024-05-12 10:53:33,381 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a155442f/343fb14fcdd441c79c1b9f51e39396cb [2024-05-12 10:53:33,384 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:53:33,385 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:53:33,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-commit-1.wvr.yml/witness.yml [2024-05-12 10:53:33,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:53:33,474 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:53:33,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:53:33,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:53:33,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:53:33,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:53:33" (1/2) ... [2024-05-12 10:53:33,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b641eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:53:33, skipping insertion in model container [2024-05-12 10:53:33,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:53:33" (1/2) ... [2024-05-12 10:53:33,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e3acba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:53:33, skipping insertion in model container [2024-05-12 10:53:33,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:53:33" (2/2) ... [2024-05-12 10:53:33,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b641eb0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33, skipping insertion in model container [2024-05-12 10:53:33,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:53:33" (2/2) ... [2024-05-12 10:53:33,485 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:53:33,504 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:53:33,506 INFO L97 edCorrectnessWitness]: Location invariant before [L142-L142] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((4294967296LL + (long long )client_size) + (long long )manager_size >= 0LL && (4294967296LL + (long long )client_size) + (long long )manager_front >= 0LL) && (4294967296LL + (long long )client_size) + (long long )node_size >= 0LL) && (4294967296LL + (long long )client_size) + (long long )node_front >= 0LL) && (4294967296LL + (long long )client_size) + (long long )node_back >= 0LL) && (4294967296LL + (long long )client_size) + (long long )update >= 0LL) && (4294967296LL + (long long )client_size) + (long long )ok >= 0LL) && (4294967296LL + (long long )client_front) + (long long )client_size >= 0LL) && (4294967296LL + (long long )client_front) + (long long )manager_size >= 0LL) && (4294967296LL + (long long )client_front) + (long long )manager_front >= 0LL) && (4294967296LL + (long long )client_front) + (long long )node_size >= 0LL) && (4294967296LL + (long long )client_front) + (long long )node_front >= 0LL) && (4294967296LL + (long long )client_front) + (long long )node_back >= 0LL) && (4294967296LL + (long long )client_front) + (long long )update >= 0LL) && (4294967296LL + (long long )client_front) + (long long )ok >= 0LL) && (4294967296LL + (long long )client_back) + (long long )client_size >= 0LL) && (4294967296LL + (long long )client_back) + (long long )client_front >= 0LL) && (4294967296LL + (long long )client_back) + (long long )manager_size >= 0LL) && (4294967296LL + (long long )client_back) + (long long )manager_front >= 0LL) && (4294967296LL + (long long )client_back) + (long long )node_size >= 0LL) && (4294967296LL + (long long )client_back) + (long long )node_front >= 0LL) && (4294967296LL + (long long )client_back) + (long long )node_back >= 0LL) && (4294967296LL + (long long )client_back) + (long long )update >= 0LL) && (4294967296LL + (long long )client_back) + (long long )ok >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )node_size >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )node_front >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )node_back >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )update >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )ok >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )manager_size >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )node_size >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )node_front >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )node_back >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )update >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )ok >= 0LL) && (4294967296LL + (long long )node_size) + (long long )update >= 0LL) && (4294967296LL + (long long )node_size) + (long long )ok >= 0LL) && (4294967296LL + (long long )node_front) + (long long )node_size >= 0LL) && (4294967296LL + (long long )node_front) + (long long )update >= 0LL) && (4294967296LL + (long long )node_front) + (long long )ok >= 0LL) && (4294967296LL + (long long )node_back) + (long long )node_size >= 0LL) && (4294967296LL + (long long )node_back) + (long long )node_front >= 0LL) && (4294967296LL + (long long )node_back) + (long long )update >= 0LL) && (4294967296LL + (long long )node_back) + (long long )ok >= 0LL) && (4294967296LL + (long long )ok) + (long long )update >= 0LL) && (2147483649LL - (long long )safe) + (long long )update >= 0LL) && (4294967295LL - (long long )client_size) + (long long )manager_size >= 0LL) && (4294967295LL - (long long )client_size) + (long long )manager_front >= 0LL) && (4294967295LL - (long long )client_size) + (long long )node_size >= 0LL) && (4294967295LL - (long long )client_size) + (long long )node_front >= 0LL) && (4294967295LL - (long long )client_size) + (long long )node_back >= 0LL) && (4294967295LL - (long long )client_size) + (long long )update >= 0LL) && (4294967295LL - (long long )client_size) + (long long )ok >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )node_size >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )node_front >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )node_back >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )update >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )ok >= 0LL) && (4294967295LL - (long long )node_size) + (long long )update >= 0LL) && (4294967295LL - (long long )node_size) + (long long )ok >= 0LL) && (4294967295LL - (long long )ok) + (long long )update >= 0LL) && (2147483649LL + (long long )client_size) - (long long )safe >= 0LL) && (2147483649LL + (long long )client_front) - (long long )safe >= 0LL) && (2147483649LL + (long long )client_back) - (long long )safe >= 0LL) && (2147483649LL + (long long )manager_size) - (long long )safe >= 0LL) && (2147483649LL + (long long )manager_front) - (long long )safe >= 0LL) && (2147483649LL + (long long )node_size) - (long long )safe >= 0LL) && (2147483649LL + (long long )node_front) - (long long )safe >= 0LL) && (2147483649LL + (long long )node_back) - (long long )safe >= 0LL) && (2147483649LL + (long long )ok) - (long long )safe >= 0LL) && (4294967295LL + (long long )client_size) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )client_size) - (long long )node_size >= 0LL) && (4294967295LL + (long long )client_size) - (long long )update >= 0LL) && (4294967295LL + (long long )client_size) - (long long )ok >= 0LL) && (4294967295LL + (long long )client_front) - (long long )client_size >= 0LL) && (4294967295LL + (long long )client_front) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )client_front) - (long long )node_size >= 0LL) && (4294967295LL + (long long )client_front) - (long long )update >= 0LL) && (4294967295LL + (long long )client_front) - (long long )ok >= 0LL) && (4294967295LL + (long long )client_back) - (long long )client_size >= 0LL) && (4294967295LL + (long long )client_back) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )client_back) - (long long )node_size >= 0LL) && (4294967295LL + (long long )client_back) - (long long )update >= 0LL) && (4294967295LL + (long long )client_back) - (long long )ok >= 0LL) && (4294967295LL + (long long )manager_size) - (long long )node_size >= 0LL) && (4294967295LL + (long long )manager_size) - (long long )update >= 0LL) && (4294967295LL + (long long )manager_size) - (long long )ok >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )node_size >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )update >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )ok >= 0LL) && (4294967295LL + (long long )node_size) - (long long )update >= 0LL) && (4294967295LL + (long long )node_size) - (long long )ok >= 0LL) && (4294967295LL + (long long )node_front) - (long long )node_size >= 0LL) && (4294967295LL + (long long )node_front) - (long long )update >= 0LL) && (4294967295LL + (long long )node_front) - (long long )ok >= 0LL) && (4294967295LL + (long long )node_back) - (long long )node_size >= 0LL) && (4294967295LL + (long long )node_back) - (long long )update >= 0LL) && (4294967295LL + (long long )node_back) - (long long )ok >= 0LL) && (4294967295LL + (long long )ok) - (long long )update >= 0LL) && (2147483648LL - (long long )client_size) - (long long )safe >= 0LL) && (2147483648LL - (long long )manager_size) - (long long )safe >= 0LL) && (2147483648LL - (long long )node_size) - (long long )safe >= 0LL) && (2147483648LL - (long long )ok) - (long long )safe >= 0LL) && (2147483648LL - (long long )safe) - (long long )update >= 0LL) && (4294967294LL - (long long )client_size) - (long long )manager_size >= 0LL) && (4294967294LL - (long long )client_size) - (long long )node_size >= 0LL) && (4294967294LL - (long long )client_size) - (long long )update >= 0LL) && (4294967294LL - (long long )client_size) - (long long )ok >= 0LL) && (4294967294LL - (long long )manager_size) - (long long )node_size >= 0LL) && (4294967294LL - (long long )manager_size) - (long long )update >= 0LL) && (4294967294LL - (long long )manager_size) - (long long )ok >= 0LL) && (4294967294LL - (long long )node_size) - (long long )update >= 0LL) && (4294967294LL - (long long )node_size) - (long long )ok >= 0LL) && (4294967294LL - (long long )ok) - (long long )update >= 0LL) [2024-05-12 10:53:33,506 INFO L97 edCorrectnessWitness]: Location invariant before [L141-L141] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((4294967296LL + (long long )client_size) + (long long )manager_size >= 0LL && (4294967296LL + (long long )client_size) + (long long )manager_front >= 0LL) && (4294967296LL + (long long )client_size) + (long long )node_size >= 0LL) && (4294967296LL + (long long )client_size) + (long long )node_front >= 0LL) && (4294967296LL + (long long )client_size) + (long long )node_back >= 0LL) && (4294967296LL + (long long )client_size) + (long long )update >= 0LL) && (4294967296LL + (long long )client_size) + (long long )ok >= 0LL) && (4294967296LL + (long long )client_front) + (long long )client_size >= 0LL) && (4294967296LL + (long long )client_front) + (long long )manager_size >= 0LL) && (4294967296LL + (long long )client_front) + (long long )manager_front >= 0LL) && (4294967296LL + (long long )client_front) + (long long )node_size >= 0LL) && (4294967296LL + (long long )client_front) + (long long )node_front >= 0LL) && (4294967296LL + (long long )client_front) + (long long )node_back >= 0LL) && (4294967296LL + (long long )client_front) + (long long )update >= 0LL) && (4294967296LL + (long long )client_front) + (long long )ok >= 0LL) && (4294967296LL + (long long )client_back) + (long long )client_size >= 0LL) && (4294967296LL + (long long )client_back) + (long long )client_front >= 0LL) && (4294967296LL + (long long )client_back) + (long long )manager_size >= 0LL) && (4294967296LL + (long long )client_back) + (long long )manager_front >= 0LL) && (4294967296LL + (long long )client_back) + (long long )node_size >= 0LL) && (4294967296LL + (long long )client_back) + (long long )node_front >= 0LL) && (4294967296LL + (long long )client_back) + (long long )node_back >= 0LL) && (4294967296LL + (long long )client_back) + (long long )update >= 0LL) && (4294967296LL + (long long )client_back) + (long long )ok >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )node_size >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )node_front >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )node_back >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )update >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )ok >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )manager_size >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )node_size >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )node_front >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )node_back >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )update >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )ok >= 0LL) && (4294967296LL + (long long )node_size) + (long long )update >= 0LL) && (4294967296LL + (long long )node_size) + (long long )ok >= 0LL) && (4294967296LL + (long long )node_front) + (long long )node_size >= 0LL) && (4294967296LL + (long long )node_front) + (long long )update >= 0LL) && (4294967296LL + (long long )node_front) + (long long )ok >= 0LL) && (4294967296LL + (long long )node_back) + (long long )node_size >= 0LL) && (4294967296LL + (long long )node_back) + (long long )node_front >= 0LL) && (4294967296LL + (long long )node_back) + (long long )update >= 0LL) && (4294967296LL + (long long )node_back) + (long long )ok >= 0LL) && (4294967296LL + (long long )ok) + (long long )update >= 0LL) && (2147483649LL - (long long )safe) + (long long )update >= 0LL) && (4294967295LL - (long long )client_size) + (long long )manager_size >= 0LL) && (4294967295LL - (long long )client_size) + (long long )manager_front >= 0LL) && (4294967295LL - (long long )client_size) + (long long )node_size >= 0LL) && (4294967295LL - (long long )client_size) + (long long )node_front >= 0LL) && (4294967295LL - (long long )client_size) + (long long )node_back >= 0LL) && (4294967295LL - (long long )client_size) + (long long )update >= 0LL) && (4294967295LL - (long long )client_size) + (long long )ok >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )node_size >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )node_front >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )node_back >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )update >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )ok >= 0LL) && (4294967295LL - (long long )node_size) + (long long )update >= 0LL) && (4294967295LL - (long long )node_size) + (long long )ok >= 0LL) && (4294967295LL - (long long )ok) + (long long )update >= 0LL) && (2147483649LL + (long long )client_size) - (long long )safe >= 0LL) && (2147483649LL + (long long )client_front) - (long long )safe >= 0LL) && (2147483649LL + (long long )client_back) - (long long )safe >= 0LL) && (2147483649LL + (long long )manager_size) - (long long )safe >= 0LL) && (2147483649LL + (long long )manager_front) - (long long )safe >= 0LL) && (2147483649LL + (long long )node_size) - (long long )safe >= 0LL) && (2147483649LL + (long long )node_front) - (long long )safe >= 0LL) && (2147483649LL + (long long )node_back) - (long long )safe >= 0LL) && (2147483649LL + (long long )ok) - (long long )safe >= 0LL) && (4294967295LL + (long long )client_size) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )client_size) - (long long )node_size >= 0LL) && (4294967295LL + (long long )client_size) - (long long )update >= 0LL) && (4294967295LL + (long long )client_size) - (long long )ok >= 0LL) && (4294967295LL + (long long )client_front) - (long long )client_size >= 0LL) && (4294967295LL + (long long )client_front) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )client_front) - (long long )node_size >= 0LL) && (4294967295LL + (long long )client_front) - (long long )update >= 0LL) && (4294967295LL + (long long )client_front) - (long long )ok >= 0LL) && (4294967295LL + (long long )client_back) - (long long )client_size >= 0LL) && (4294967295LL + (long long )client_back) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )client_back) - (long long )node_size >= 0LL) && (4294967295LL + (long long )client_back) - (long long )update >= 0LL) && (4294967295LL + (long long )client_back) - (long long )ok >= 0LL) && (4294967295LL + (long long )manager_size) - (long long )node_size >= 0LL) && (4294967295LL + (long long )manager_size) - (long long )update >= 0LL) && (4294967295LL + (long long )manager_size) - (long long )ok >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )node_size >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )update >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )ok >= 0LL) && (4294967295LL + (long long )node_size) - (long long )update >= 0LL) && (4294967295LL + (long long )node_size) - (long long )ok >= 0LL) && (4294967295LL + (long long )node_front) - (long long )node_size >= 0LL) && (4294967295LL + (long long )node_front) - (long long )update >= 0LL) && (4294967295LL + (long long )node_front) - (long long )ok >= 0LL) && (4294967295LL + (long long )node_back) - (long long )node_size >= 0LL) && (4294967295LL + (long long )node_back) - (long long )update >= 0LL) && (4294967295LL + (long long )node_back) - (long long )ok >= 0LL) && (4294967295LL + (long long )ok) - (long long )update >= 0LL) && (2147483648LL - (long long )client_size) - (long long )safe >= 0LL) && (2147483648LL - (long long )manager_size) - (long long )safe >= 0LL) && (2147483648LL - (long long )node_size) - (long long )safe >= 0LL) && (2147483648LL - (long long )ok) - (long long )safe >= 0LL) && (2147483648LL - (long long )safe) - (long long )update >= 0LL) && (4294967294LL - (long long )client_size) - (long long )manager_size >= 0LL) && (4294967294LL - (long long )client_size) - (long long )node_size >= 0LL) && (4294967294LL - (long long )client_size) - (long long )update >= 0LL) && (4294967294LL - (long long )client_size) - (long long )ok >= 0LL) && (4294967294LL - (long long )manager_size) - (long long )node_size >= 0LL) && (4294967294LL - (long long )manager_size) - (long long )update >= 0LL) && (4294967294LL - (long long )manager_size) - (long long )ok >= 0LL) && (4294967294LL - (long long )node_size) - (long long )update >= 0LL) && (4294967294LL - (long long )node_size) - (long long )ok >= 0LL) && (4294967294LL - (long long )ok) - (long long )update >= 0LL) [2024-05-12 10:53:33,507 INFO L97 edCorrectnessWitness]: Location invariant before [L143-L143] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((4294967296LL + (long long )client_size) + (long long )manager_size >= 0LL && (4294967296LL + (long long )client_size) + (long long )manager_front >= 0LL) && (4294967296LL + (long long )client_size) + (long long )node_size >= 0LL) && (4294967296LL + (long long )client_size) + (long long )node_front >= 0LL) && (4294967296LL + (long long )client_size) + (long long )node_back >= 0LL) && (4294967296LL + (long long )client_size) + (long long )update >= 0LL) && (4294967296LL + (long long )client_size) + (long long )ok >= 0LL) && (4294967296LL + (long long )client_front) + (long long )client_size >= 0LL) && (4294967296LL + (long long )client_front) + (long long )manager_size >= 0LL) && (4294967296LL + (long long )client_front) + (long long )manager_front >= 0LL) && (4294967296LL + (long long )client_front) + (long long )node_size >= 0LL) && (4294967296LL + (long long )client_front) + (long long )node_front >= 0LL) && (4294967296LL + (long long )client_front) + (long long )node_back >= 0LL) && (4294967296LL + (long long )client_front) + (long long )update >= 0LL) && (4294967296LL + (long long )client_front) + (long long )ok >= 0LL) && (4294967296LL + (long long )client_back) + (long long )client_size >= 0LL) && (4294967296LL + (long long )client_back) + (long long )client_front >= 0LL) && (4294967296LL + (long long )client_back) + (long long )manager_size >= 0LL) && (4294967296LL + (long long )client_back) + (long long )manager_front >= 0LL) && (4294967296LL + (long long )client_back) + (long long )node_size >= 0LL) && (4294967296LL + (long long )client_back) + (long long )node_front >= 0LL) && (4294967296LL + (long long )client_back) + (long long )node_back >= 0LL) && (4294967296LL + (long long )client_back) + (long long )update >= 0LL) && (4294967296LL + (long long )client_back) + (long long )ok >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )node_size >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )node_front >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )node_back >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )update >= 0LL) && (4294967296LL + (long long )manager_size) + (long long )ok >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )manager_size >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )node_size >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )node_front >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )node_back >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )update >= 0LL) && (4294967296LL + (long long )manager_front) + (long long )ok >= 0LL) && (4294967296LL + (long long )node_size) + (long long )update >= 0LL) && (4294967296LL + (long long )node_size) + (long long )ok >= 0LL) && (4294967296LL + (long long )node_front) + (long long )node_size >= 0LL) && (4294967296LL + (long long )node_front) + (long long )update >= 0LL) && (4294967296LL + (long long )node_front) + (long long )ok >= 0LL) && (4294967296LL + (long long )node_back) + (long long )node_size >= 0LL) && (4294967296LL + (long long )node_back) + (long long )node_front >= 0LL) && (4294967296LL + (long long )node_back) + (long long )update >= 0LL) && (4294967296LL + (long long )node_back) + (long long )ok >= 0LL) && (4294967296LL + (long long )ok) + (long long )update >= 0LL) && (2147483649LL - (long long )safe) + (long long )update >= 0LL) && (4294967295LL - (long long )client_size) + (long long )manager_size >= 0LL) && (4294967295LL - (long long )client_size) + (long long )manager_front >= 0LL) && (4294967295LL - (long long )client_size) + (long long )node_size >= 0LL) && (4294967295LL - (long long )client_size) + (long long )node_front >= 0LL) && (4294967295LL - (long long )client_size) + (long long )node_back >= 0LL) && (4294967295LL - (long long )client_size) + (long long )update >= 0LL) && (4294967295LL - (long long )client_size) + (long long )ok >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )node_size >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )node_front >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )node_back >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )update >= 0LL) && (4294967295LL - (long long )manager_size) + (long long )ok >= 0LL) && (4294967295LL - (long long )node_size) + (long long )update >= 0LL) && (4294967295LL - (long long )node_size) + (long long )ok >= 0LL) && (4294967295LL - (long long )ok) + (long long )update >= 0LL) && (2147483649LL + (long long )client_size) - (long long )safe >= 0LL) && (2147483649LL + (long long )client_front) - (long long )safe >= 0LL) && (2147483649LL + (long long )client_back) - (long long )safe >= 0LL) && (2147483649LL + (long long )manager_size) - (long long )safe >= 0LL) && (2147483649LL + (long long )manager_front) - (long long )safe >= 0LL) && (2147483649LL + (long long )node_size) - (long long )safe >= 0LL) && (2147483649LL + (long long )node_front) - (long long )safe >= 0LL) && (2147483649LL + (long long )node_back) - (long long )safe >= 0LL) && (2147483649LL + (long long )ok) - (long long )safe >= 0LL) && (4294967295LL + (long long )client_size) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )client_size) - (long long )node_size >= 0LL) && (4294967295LL + (long long )client_size) - (long long )update >= 0LL) && (4294967295LL + (long long )client_size) - (long long )ok >= 0LL) && (4294967295LL + (long long )client_front) - (long long )client_size >= 0LL) && (4294967295LL + (long long )client_front) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )client_front) - (long long )node_size >= 0LL) && (4294967295LL + (long long )client_front) - (long long )update >= 0LL) && (4294967295LL + (long long )client_front) - (long long )ok >= 0LL) && (4294967295LL + (long long )client_back) - (long long )client_size >= 0LL) && (4294967295LL + (long long )client_back) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )client_back) - (long long )node_size >= 0LL) && (4294967295LL + (long long )client_back) - (long long )update >= 0LL) && (4294967295LL + (long long )client_back) - (long long )ok >= 0LL) && (4294967295LL + (long long )manager_size) - (long long )node_size >= 0LL) && (4294967295LL + (long long )manager_size) - (long long )update >= 0LL) && (4294967295LL + (long long )manager_size) - (long long )ok >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )manager_size >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )node_size >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )update >= 0LL) && (4294967295LL + (long long )manager_front) - (long long )ok >= 0LL) && (4294967295LL + (long long )node_size) - (long long )update >= 0LL) && (4294967295LL + (long long )node_size) - (long long )ok >= 0LL) && (4294967295LL + (long long )node_front) - (long long )node_size >= 0LL) && (4294967295LL + (long long )node_front) - (long long )update >= 0LL) && (4294967295LL + (long long )node_front) - (long long )ok >= 0LL) && (4294967295LL + (long long )node_back) - (long long )node_size >= 0LL) && (4294967295LL + (long long )node_back) - (long long )update >= 0LL) && (4294967295LL + (long long )node_back) - (long long )ok >= 0LL) && (4294967295LL + (long long )ok) - (long long )update >= 0LL) && (2147483648LL - (long long )client_size) - (long long )safe >= 0LL) && (2147483648LL - (long long )manager_size) - (long long )safe >= 0LL) && (2147483648LL - (long long )node_size) - (long long )safe >= 0LL) && (2147483648LL - (long long )ok) - (long long )safe >= 0LL) && (2147483648LL - (long long )safe) - (long long )update >= 0LL) && (4294967294LL - (long long )client_size) - (long long )manager_size >= 0LL) && (4294967294LL - (long long )client_size) - (long long )node_size >= 0LL) && (4294967294LL - (long long )client_size) - (long long )update >= 0LL) && (4294967294LL - (long long )client_size) - (long long )ok >= 0LL) && (4294967294LL - (long long )manager_size) - (long long )node_size >= 0LL) && (4294967294LL - (long long )manager_size) - (long long )update >= 0LL) && (4294967294LL - (long long )manager_size) - (long long )ok >= 0LL) && (4294967294LL - (long long )node_size) - (long long )update >= 0LL) && (4294967294LL - (long long )node_size) - (long long )ok >= 0LL) && (4294967294LL - (long long )ok) - (long long )update >= 0LL) [2024-05-12 10:53:33,507 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:53:33,507 INFO L106 edCorrectnessWitness]: ghost_update [L140-L140] multithreaded = 1; [2024-05-12 10:53:33,529 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:53:33,743 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c[4604,4617] [2024-05-12 10:53:33,756 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:53:33,770 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:53:33,959 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c[4604,4617] [2024-05-12 10:53:33,962 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:53:33,978 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:53:33,979 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33 WrapperNode [2024-05-12 10:53:33,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:53:33,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:53:33,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:53:33,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:53:33,985 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 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,008 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 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,042 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 355 [2024-05-12 10:53:34,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:53:34,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:53:34,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:53:34,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:53:34,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,055 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,074 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 11, 2, 2, 2]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2024-05-12 10:53:34,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:53:34,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:53:34,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:53:34,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:53:34,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (1/1) ... [2024-05-12 10:53:34,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:53:34,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:53:34,165 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) [2024-05-12 10:53:34,179 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 [2024-05-12 10:53:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:53:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:53:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:53:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:53:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:53:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 10:53:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 10:53:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 10:53:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 10:53:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 10:53:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 10:53:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 10:53:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 10:53:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 10:53:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 10:53:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 10:53:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 10:53:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 10:53:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:53:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:53:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:53:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 10:53:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 10:53:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:53:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:53:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-12 10:53:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:53:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:53:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:53:34,200 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:53:34,286 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:53:34,288 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:53:34,843 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:53:34,843 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:53:35,166 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:53:35,169 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-05-12 10:53:35,170 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:53:35 BoogieIcfgContainer [2024-05-12 10:53:35,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:53:35,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:53:35,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:53:35,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:53:35,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:53:33" (1/4) ... [2024-05-12 10:53:35,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f8cb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:53:35, skipping insertion in model container [2024-05-12 10:53:35,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:53:33" (2/4) ... [2024-05-12 10:53:35,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f8cb2e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:53:35, skipping insertion in model container [2024-05-12 10:53:35,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:53:33" (3/4) ... [2024-05-12 10:53:35,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f8cb2e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:53:35, skipping insertion in model container [2024-05-12 10:53:35,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:53:35" (4/4) ... [2024-05-12 10:53:35,181 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2024-05-12 10:53:35,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:53:35,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 10:53:35,197 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:53:35,258 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-12 10:53:35,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 55 transitions, 131 flow [2024-05-12 10:53:35,320 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-05-12 10:53:35,321 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 10:53:35,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 52 events. 9/52 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-05-12 10:53:35,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 55 transitions, 131 flow [2024-05-12 10:53:35,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 120 flow [2024-05-12 10:53:35,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:53:35,348 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;@6a296f3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:53:35,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 10:53:35,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:53:35,355 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2024-05-12 10:53:35,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:53:35,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:53:35,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:53:35,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:53:35,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:53:35,361 INFO L85 PathProgramCache]: Analyzing trace with hash 776407887, now seen corresponding path program 1 times [2024-05-12 10:53:35,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:53:35,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163669874] [2024-05-12 10:53:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:53:35,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:53:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:53:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:53:37,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:53:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163669874] [2024-05-12 10:53:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163669874] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:53:37,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:53:37,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:53:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128716051] [2024-05-12 10:53:37,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:53:37,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:53:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:53:37,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:53:37,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:53:37,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-05-12 10:53:37,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-05-12 10:53:37,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:53:37,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-05-12 10:53:37,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:53:38,369 INFO L124 PetriNetUnfolderBase]: 2853/4147 cut-off events. [2024-05-12 10:53:38,369 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-05-12 10:53:38,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8420 conditions, 4147 events. 2853/4147 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 22161 event pairs, 2394 based on Foata normal form. 833/4106 useless extension candidates. Maximal degree in co-relation 6327. Up to 3286 conditions per place. [2024-05-12 10:53:38,389 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 43 selfloop transitions, 6 changer transitions 26/79 dead transitions. [2024-05-12 10:53:38,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 344 flow [2024-05-12 10:53:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:53:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:53:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-05-12 10:53:38,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-05-12 10:53:38,400 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 120 flow. Second operand 6 states and 130 transitions. [2024-05-12 10:53:38,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 344 flow [2024-05-12 10:53:38,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 320 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 10:53:38,409 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 158 flow [2024-05-12 10:53:38,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-05-12 10:53:38,413 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-05-12 10:53:38,413 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 158 flow [2024-05-12 10:53:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-05-12 10:53:38,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:53:38,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:53:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:53:38,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:53:38,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:53:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2137704515, now seen corresponding path program 1 times [2024-05-12 10:53:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:53:38,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033695121] [2024-05-12 10:53:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:53:38,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:53:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:53:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:53:39,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:53:39,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033695121] [2024-05-12 10:53:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033695121] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:53:39,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628540350] [2024-05-12 10:53:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:53:39,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:53:39,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:53:39,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:53:39,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 10:53:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:53:39,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 42 conjunts are in the unsatisfiable core [2024-05-12 10:53:39,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:53:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:53:40,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:53:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:53:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628540350] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:53:45,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:53:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-05-12 10:53:45,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361812122] [2024-05-12 10:53:45,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:53:45,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-05-12 10:53:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:53:45,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-05-12 10:53:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-05-12 10:53:45,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-05-12 10:53:45,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 158 flow. Second operand has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 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) [2024-05-12 10:53:45,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:53:45,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-05-12 10:53:45,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:53:53,575 INFO L124 PetriNetUnfolderBase]: 7150/10228 cut-off events. [2024-05-12 10:53:53,575 INFO L125 PetriNetUnfolderBase]: For 1214/1214 co-relation queries the response was YES. [2024-05-12 10:53:53,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22375 conditions, 10228 events. 7150/10228 cut-off events. For 1214/1214 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 61496 event pairs, 5236 based on Foata normal form. 458/9175 useless extension candidates. Maximal degree in co-relation 14646. Up to 3286 conditions per place. [2024-05-12 10:53:53,622 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 138 selfloop transitions, 40 changer transitions 7/189 dead transitions. [2024-05-12 10:53:53,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 189 transitions, 920 flow [2024-05-12 10:53:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-05-12 10:53:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-05-12 10:53:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 296 transitions. [2024-05-12 10:53:53,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35878787878787877 [2024-05-12 10:53:53,625 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 158 flow. Second operand 15 states and 296 transitions. [2024-05-12 10:53:53,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 189 transitions, 920 flow [2024-05-12 10:53:53,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 189 transitions, 904 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-05-12 10:53:53,631 INFO L231 Difference]: Finished difference. Result has 69 places, 92 transitions, 440 flow [2024-05-12 10:53:53,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=440, PETRI_PLACES=69, PETRI_TRANSITIONS=92} [2024-05-12 10:53:53,632 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-05-12 10:53:53,632 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 92 transitions, 440 flow [2024-05-12 10:53:53,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 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) [2024-05-12 10:53:53,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:53:53,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:53:53,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-05-12 10:53:53,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:53:53,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:53:53,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:53:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1651202325, now seen corresponding path program 1 times [2024-05-12 10:53:53,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:53:53,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333092694] [2024-05-12 10:53:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:53:53,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:53:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:53:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:53:55,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:53:55,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333092694] [2024-05-12 10:53:55,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333092694] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:53:55,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162003373] [2024-05-12 10:53:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:53:55,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:53:55,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:53:55,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:53:55,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 10:53:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:53:55,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjunts are in the unsatisfiable core [2024-05-12 10:53:55,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:53:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:53:55,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:54:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:54:01,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162003373] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:54:01,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:54:01,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-05-12 10:54:01,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382171003] [2024-05-12 10:54:01,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:54:01,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-05-12 10:54:01,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:54:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-05-12 10:54:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-05-12 10:54:01,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-05-12 10:54:01,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 92 transitions, 440 flow. Second operand has 17 states, 17 states have (on average 8.764705882352942) internal successors, (149), 17 states have internal predecessors, (149), 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) [2024-05-12 10:54:01,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:54:01,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-05-12 10:54:01,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:54:09,231 INFO L124 PetriNetUnfolderBase]: 12959/18661 cut-off events. [2024-05-12 10:54:09,231 INFO L125 PetriNetUnfolderBase]: For 8548/8548 co-relation queries the response was YES. [2024-05-12 10:54:09,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43827 conditions, 18661 events. 12959/18661 cut-off events. For 8548/8548 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 121009 event pairs, 10182 based on Foata normal form. 640/16564 useless extension candidates. Maximal degree in co-relation 21591. Up to 9046 conditions per place. [2024-05-12 10:54:09,302 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 125 selfloop transitions, 48 changer transitions 5/182 dead transitions. [2024-05-12 10:54:09,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 182 transitions, 1130 flow [2024-05-12 10:54:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 10:54:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 10:54:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-05-12 10:54:09,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-05-12 10:54:09,304 INFO L175 Difference]: Start difference. First operand has 69 places, 92 transitions, 440 flow. Second operand 12 states and 228 transitions. [2024-05-12 10:54:09,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 182 transitions, 1130 flow [2024-05-12 10:54:09,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 182 transitions, 980 flow, removed 72 selfloop flow, removed 2 redundant places. [2024-05-12 10:54:09,313 INFO L231 Difference]: Finished difference. Result has 83 places, 122 transitions, 695 flow [2024-05-12 10:54:09,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=695, PETRI_PLACES=83, PETRI_TRANSITIONS=122} [2024-05-12 10:54:09,313 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-05-12 10:54:09,314 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 122 transitions, 695 flow [2024-05-12 10:54:09,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.764705882352942) internal successors, (149), 17 states have internal predecessors, (149), 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) [2024-05-12 10:54:09,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:54:09,314 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:54:09,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-12 10:54:09,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-05-12 10:54:09,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:54:09,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:54:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash -624380957, now seen corresponding path program 1 times [2024-05-12 10:54:09,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:54:09,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672087811] [2024-05-12 10:54:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:54:09,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:54:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:54:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:54:10,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:54:10,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672087811] [2024-05-12 10:54:10,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672087811] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:54:10,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058812324] [2024-05-12 10:54:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:54:10,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:54:10,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:54:10,653 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:54:10,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-12 10:54:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:54:10,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 45 conjunts are in the unsatisfiable core [2024-05-12 10:54:10,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:54:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:54:11,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:54:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:54:16,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058812324] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:54:16,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:54:16,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-05-12 10:54:16,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540527129] [2024-05-12 10:54:16,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:54:16,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-05-12 10:54:16,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:54:16,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-05-12 10:54:16,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2024-05-12 10:54:16,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-05-12 10:54:16,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 122 transitions, 695 flow. Second operand has 23 states, 23 states have (on average 8.565217391304348) internal successors, (197), 23 states have internal predecessors, (197), 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) [2024-05-12 10:54:16,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:54:16,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-05-12 10:54:16,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:54:31,504 INFO L124 PetriNetUnfolderBase]: 26277/37760 cut-off events. [2024-05-12 10:54:31,504 INFO L125 PetriNetUnfolderBase]: For 33223/33223 co-relation queries the response was YES. [2024-05-12 10:54:31,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94292 conditions, 37760 events. 26277/37760 cut-off events. For 33223/33223 co-relation queries the response was YES. Maximal size of possible extension queue 2304. Compared 268261 event pairs, 21176 based on Foata normal form. 708/32896 useless extension candidates. Maximal degree in co-relation 63167. Up to 16681 conditions per place. [2024-05-12 10:54:31,717 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 127 selfloop transitions, 114 changer transitions 26/271 dead transitions. [2024-05-12 10:54:31,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 271 transitions, 1812 flow [2024-05-12 10:54:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-05-12 10:54:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-05-12 10:54:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 359 transitions. [2024-05-12 10:54:31,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31082251082251083 [2024-05-12 10:54:31,719 INFO L175 Difference]: Start difference. First operand has 83 places, 122 transitions, 695 flow. Second operand 21 states and 359 transitions. [2024-05-12 10:54:31,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 271 transitions, 1812 flow [2024-05-12 10:54:31,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 271 transitions, 1794 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 10:54:31,759 INFO L231 Difference]: Finished difference. Result has 105 places, 174 transitions, 1324 flow [2024-05-12 10:54:31,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1324, PETRI_PLACES=105, PETRI_TRANSITIONS=174} [2024-05-12 10:54:31,761 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 53 predicate places. [2024-05-12 10:54:31,761 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 174 transitions, 1324 flow [2024-05-12 10:54:31,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.565217391304348) internal successors, (197), 23 states have internal predecessors, (197), 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) [2024-05-12 10:54:31,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:54:31,762 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:54:31,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-12 10:54:31,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:54:31,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:54:31,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:54:31,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2042300963, now seen corresponding path program 1 times [2024-05-12 10:54:31,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:54:31,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680828265] [2024-05-12 10:54:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:54:31,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:54:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:54:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:54:33,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:54:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680828265] [2024-05-12 10:54:33,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680828265] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:54:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372024408] [2024-05-12 10:54:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:54:33,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:54:33,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:54:33,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:54:33,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-12 10:54:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:54:33,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 43 conjunts are in the unsatisfiable core [2024-05-12 10:54:33,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:54:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:54:33,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:54:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:54:39,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372024408] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:54:39,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:54:39,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-05-12 10:54:39,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87126937] [2024-05-12 10:54:39,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:54:39,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-05-12 10:54:39,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:54:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-05-12 10:54:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2024-05-12 10:54:39,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-05-12 10:54:39,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 174 transitions, 1324 flow. Second operand has 23 states, 23 states have (on average 8.565217391304348) internal successors, (197), 23 states have internal predecessors, (197), 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) [2024-05-12 10:54:39,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:54:39,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-05-12 10:54:39,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:54:54,281 INFO L124 PetriNetUnfolderBase]: 35062/50261 cut-off events. [2024-05-12 10:54:54,282 INFO L125 PetriNetUnfolderBase]: For 76666/76666 co-relation queries the response was YES. [2024-05-12 10:54:54,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132903 conditions, 50261 events. 35062/50261 cut-off events. For 76666/76666 co-relation queries the response was YES. Maximal size of possible extension queue 2948. Compared 367309 event pairs, 28089 based on Foata normal form. 857/43679 useless extension candidates. Maximal degree in co-relation 116395. Up to 33961 conditions per place. [2024-05-12 10:54:54,626 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 149 selfloop transitions, 102 changer transitions 5/260 dead transitions. [2024-05-12 10:54:54,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 260 transitions, 2223 flow [2024-05-12 10:54:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-05-12 10:54:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-05-12 10:54:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 288 transitions. [2024-05-12 10:54:54,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2909090909090909 [2024-05-12 10:54:54,630 INFO L175 Difference]: Start difference. First operand has 105 places, 174 transitions, 1324 flow. Second operand 18 states and 288 transitions. [2024-05-12 10:54:54,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 260 transitions, 2223 flow [2024-05-12 10:54:54,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 260 transitions, 2120 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-05-12 10:54:54,720 INFO L231 Difference]: Finished difference. Result has 124 places, 199 transitions, 1857 flow [2024-05-12 10:54:54,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1857, PETRI_PLACES=124, PETRI_TRANSITIONS=199} [2024-05-12 10:54:54,721 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 72 predicate places. [2024-05-12 10:54:54,721 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 199 transitions, 1857 flow [2024-05-12 10:54:54,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.565217391304348) internal successors, (197), 23 states have internal predecessors, (197), 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) [2024-05-12 10:54:54,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:54:54,722 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:54:54,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-05-12 10:54:54,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:54:54,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:54:54,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:54:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1003441359, now seen corresponding path program 2 times [2024-05-12 10:54:54,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:54:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847292338] [2024-05-12 10:54:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:54:54,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:54:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:54:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:54:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:54:56,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847292338] [2024-05-12 10:54:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847292338] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:54:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074567883] [2024-05-12 10:54:56,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 10:54:56,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:54:56,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:54:56,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:54:56,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-12 10:54:56,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-05-12 10:54:56,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 10:54:56,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 28 conjunts are in the unsatisfiable core [2024-05-12 10:54:56,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:54:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-05-12 10:54:56,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 10:54:56,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074567883] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:54:56,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 10:54:56,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-05-12 10:54:56,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432209742] [2024-05-12 10:54:56,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:54:56,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:54:56,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:54:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:54:56,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-05-12 10:54:56,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-05-12 10:54:56,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 199 transitions, 1857 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2024-05-12 10:54:56,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:54:56,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-05-12 10:54:56,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:55:05,993 INFO L124 PetriNetUnfolderBase]: 49102/71861 cut-off events. [2024-05-12 10:55:05,994 INFO L125 PetriNetUnfolderBase]: For 97924/97924 co-relation queries the response was YES. [2024-05-12 10:55:06,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190544 conditions, 71861 events. 49102/71861 cut-off events. For 97924/97924 co-relation queries the response was YES. Maximal size of possible extension queue 3882. Compared 580747 event pairs, 14114 based on Foata normal form. 1362/62013 useless extension candidates. Maximal degree in co-relation 180874. Up to 49667 conditions per place. [2024-05-12 10:55:06,605 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 211 selfloop transitions, 6 changer transitions 3/224 dead transitions. [2024-05-12 10:55:06,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 224 transitions, 2374 flow [2024-05-12 10:55:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:55:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:55:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-05-12 10:55:06,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-05-12 10:55:06,606 INFO L175 Difference]: Start difference. First operand has 124 places, 199 transitions, 1857 flow. Second operand 3 states and 95 transitions. [2024-05-12 10:55:06,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 224 transitions, 2374 flow [2024-05-12 10:55:06,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 224 transitions, 2288 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-05-12 10:55:06,744 INFO L231 Difference]: Finished difference. Result has 122 places, 201 transitions, 1823 flow [2024-05-12 10:55:06,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1823, PETRI_PLACES=122, PETRI_TRANSITIONS=201} [2024-05-12 10:55:06,745 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-05-12 10:55:06,746 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 201 transitions, 1823 flow [2024-05-12 10:55:06,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2024-05-12 10:55:06,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:55:06,746 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:55:06,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-05-12 10:55:06,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:55:06,949 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:55:06,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:55:06,950 INFO L85 PathProgramCache]: Analyzing trace with hash 567159065, now seen corresponding path program 1 times [2024-05-12 10:55:06,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:55:06,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358336667] [2024-05-12 10:55:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:55:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-05-12 10:55:07,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:55:07,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358336667] [2024-05-12 10:55:07,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358336667] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:55:07,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:55:07,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:55:07,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303503666] [2024-05-12 10:55:07,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:55:07,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:55:07,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:55:07,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:55:07,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:55:07,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-05-12 10:55:07,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 201 transitions, 1823 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-05-12 10:55:07,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:55:07,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-05-12 10:55:07,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand