./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-3.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-dev-ab2e0ac-m [2024-01-29 14:18:39,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:18:39,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:18:39,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:18:39,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:18:39,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:18:39,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:18:39,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:18:39,182 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:18:39,185 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:18:39,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:18:39,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:18:39,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:18:39,188 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:18:39,188 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:18:39,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:18:39,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:18:39,189 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:18:39,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:18:39,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:18:39,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:18:39,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:18:39,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:18:39,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:18:39,190 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:18:39,191 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:18:39,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:18:39,191 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:18:39,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:18:39,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:18:39,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:18:39,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:18:39,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:18:39,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:18:39,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:18:39,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:18:39,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:18:39,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:18:39,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:18:39,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:18:39,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:18:39,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:18:39,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:18:39,195 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:18:39,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:18:39,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:18:39,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:18:39,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:18:39,457 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:18:39,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2024-01-29 14:18:40,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:18:40,763 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:18:40,763 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2024-01-29 14:18:40,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a6c6e6e/e661031298824ffbb5ae99b130fcd2aa/FLAGb2f8c5402 [2024-01-29 14:18:40,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a6c6e6e/e661031298824ffbb5ae99b130fcd2aa [2024-01-29 14:18:40,783 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:18:40,784 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:18:40,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-3.wvr.yml/witness.yml [2024-01-29 14:18:40,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:18:40,888 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:18:40,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:18:40,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:18:40,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:18:40,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:18:40" (1/2) ... [2024-01-29 14:18:40,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3df24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:40, skipping insertion in model container [2024-01-29 14:18:40,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:18:40" (1/2) ... [2024-01-29 14:18:40,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74905d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:40, skipping insertion in model container [2024-01-29 14:18:40,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:18:40" (2/2) ... [2024-01-29 14:18:40,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3df24f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:40, skipping insertion in model container [2024-01-29 14:18:40,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:18:40" (2/2) ... [2024-01-29 14:18:40,896 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:18:40,922 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:18:40,923 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] pos == 0 [2024-01-29 14:18:40,923 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] d2 == (_Bool)1 [2024-01-29 14:18:40,923 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] g2 == (_Bool)1 [2024-01-29 14:18:40,923 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] g1 == (_Bool)1 [2024-01-29 14:18:40,923 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] d1 == (_Bool)1 [2024-01-29 14:18:40,924 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,924 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] -2147483646 <= pos [2024-01-29 14:18:40,925 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,925 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L56] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,925 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,925 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,925 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,925 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,925 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] d1 == (_Bool)0 [2024-01-29 14:18:40,925 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] d2 == (_Bool)0 [2024-01-29 14:18:40,925 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] g2 == (_Bool)0 [2024-01-29 14:18:40,926 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] g1 == (_Bool)0 [2024-01-29 14:18:40,926 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] pos == 0 [2024-01-29 14:18:40,926 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L51] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,926 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] d1 == (_Bool)1 [2024-01-29 14:18:40,926 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] d2 == (_Bool)1 [2024-01-29 14:18:40,927 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] pos == 0 [2024-01-29 14:18:40,927 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] g2 == (_Bool)0 [2024-01-29 14:18:40,927 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] g1 == (_Bool)0 [2024-01-29 14:18:40,927 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,927 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] pos <= 2147483646 [2024-01-29 14:18:40,927 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,927 INFO L98 nessWitnessExtractor]: Loop invariant at [L64-L80] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,927 INFO L98 nessWitnessExtractor]: Loop invariant at [L42-L58] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,928 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,928 INFO L98 nessWitnessExtractor]: Location invariant before [L65-L73] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,928 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,928 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] pos <= 2147483645 [2024-01-29 14:18:40,928 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L78] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,928 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,928 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,928 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L57] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,929 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,930 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L79] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,930 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,930 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,930 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] -2147483647 <= pos [2024-01-29 14:18:40,930 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,930 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] g1 == (_Bool)0 [2024-01-29 14:18:40,930 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] g2 == (_Bool)0 [2024-01-29 14:18:40,931 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] pos == 0 [2024-01-29 14:18:40,931 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] d2 == (_Bool)0 [2024-01-29 14:18:40,931 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] d1 == (_Bool)1 [2024-01-29 14:18:40,931 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,931 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] (unsigned long )_argptr == 0UL [2024-01-29 14:18:40,931 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] d2 == (_Bool)1 [2024-01-29 14:18:40,932 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] d1 == (_Bool)1 [2024-01-29 14:18:40,932 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] pos == 0 [2024-01-29 14:18:40,932 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] g1 == (_Bool)1 [2024-01-29 14:18:40,932 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] g2 == (_Bool)0 [2024-01-29 14:18:40,933 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L19] val == (_Bool)0 || val == (_Bool)1 [2024-01-29 14:18:40,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:18:41,087 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2436,2449] [2024-01-29 14:18:41,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:18:41,106 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 14:18:41,114 WARN L424 MainDispatcher]: Unable to annotate __assert_fail(const char *__assertion, const char *__file, unsigned int __line, const char *__function) with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:18:41,170 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2436,2449] [2024-01-29 14:18:41,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:18:41,183 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:18:41,183 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41 WrapperNode [2024-01-29 14:18:41,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:18:41,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:18:41,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:18:41,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:18:41,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,213 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2024-01-29 14:18:41,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:18:41,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:18:41,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:18:41,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:18:41,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,226 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,238 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-29 14:18:41,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:18:41,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:18:41,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:18:41,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:18:41,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (1/1) ... [2024-01-29 14:18:41,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:18:41,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:18:41,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-29 14:18:41,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-29 14:18:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:18:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-29 14:18:41,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-29 14:18:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-29 14:18:41,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-29 14:18:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:18:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:18:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:18:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:18:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:18:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:18:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:18:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-29 14:18:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-29 14:18:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:18:41,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:18:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 14:18:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 14:18:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 14:18:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:18:41,307 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 14:18:41,431 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:18:41,433 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:18:41,687 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:18:41,687 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:18:41,802 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:18:41,802 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-29 14:18:41,803 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:18:41 BoogieIcfgContainer [2024-01-29 14:18:41,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:18:41,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:18:41,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:18:41,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:18:41,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:18:40" (1/4) ... [2024-01-29 14:18:41,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a3613d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:18:41, skipping insertion in model container [2024-01-29 14:18:41,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:18:40" (2/4) ... [2024-01-29 14:18:41,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a3613d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:18:41, skipping insertion in model container [2024-01-29 14:18:41,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:41" (3/4) ... [2024-01-29 14:18:41,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a3613d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:18:41, skipping insertion in model container [2024-01-29 14:18:41,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:18:41" (4/4) ... [2024-01-29 14:18:41,810 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-01-29 14:18:41,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:18:41,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2024-01-29 14:18:41,845 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:18:41,923 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 14:18:41,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 137 transitions, 288 flow [2024-01-29 14:18:42,013 INFO L124 PetriNetUnfolderBase]: 8/135 cut-off events. [2024-01-29 14:18:42,014 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:18:42,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 135 events. 8/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 339 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 92. Up to 3 conditions per place. [2024-01-29 14:18:42,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 137 transitions, 288 flow [2024-01-29 14:18:42,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 134 transitions, 280 flow [2024-01-29 14:18:42,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:18:42,033 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;@772844d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:18:42,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2024-01-29 14:18:42,035 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:18:42,035 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 14:18:42,035 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:18:42,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:42,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 14:18:42,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:42,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash 13613, now seen corresponding path program 1 times [2024-01-29 14:18:42,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:42,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607837371] [2024-01-29 14:18:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:42,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:42,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:42,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607837371] [2024-01-29 14:18:42,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607837371] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:42,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:42,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:18:42,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924562253] [2024-01-29 14:18:42,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:42,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:42,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:42,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:42,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 137 [2024-01-29 14:18:42,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 134 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:42,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:42,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 137 [2024-01-29 14:18:42,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:42,581 INFO L124 PetriNetUnfolderBase]: 1034/2323 cut-off events. [2024-01-29 14:18:42,592 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-29 14:18:42,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3788 conditions, 2323 events. 1034/2323 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17131 event pairs, 154 based on Foata normal form. 1/1370 useless extension candidates. Maximal degree in co-relation 3495. Up to 1259 conditions per place. [2024-01-29 14:18:42,654 INFO L140 encePairwiseOnDemand]: 118/137 looper letters, 56 selfloop transitions, 5 changer transitions 1/143 dead transitions. [2024-01-29 14:18:42,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 143 transitions, 431 flow [2024-01-29 14:18:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2024-01-29 14:18:42,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8004866180048662 [2024-01-29 14:18:42,687 INFO L175 Difference]: Start difference. First operand has 133 places, 134 transitions, 280 flow. Second operand 3 states and 329 transitions. [2024-01-29 14:18:42,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 143 transitions, 431 flow [2024-01-29 14:18:42,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 143 transitions, 417 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 14:18:42,701 INFO L231 Difference]: Finished difference. Result has 123 places, 129 transitions, 295 flow [2024-01-29 14:18:42,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=123, PETRI_TRANSITIONS=129} [2024-01-29 14:18:42,706 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -10 predicate places. [2024-01-29 14:18:42,706 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 129 transitions, 295 flow [2024-01-29 14:18:42,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:42,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:42,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-29 14:18:42,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:18:42,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:42,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash 422474, now seen corresponding path program 1 times [2024-01-29 14:18:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:42,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260718659] [2024-01-29 14:18:42,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:42,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:42,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260718659] [2024-01-29 14:18:42,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260718659] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:42,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:42,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:18:42,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444057309] [2024-01-29 14:18:42,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:42,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:42,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:42,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:42,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:42,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 137 [2024-01-29 14:18:42,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:42,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:42,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 137 [2024-01-29 14:18:42,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:43,090 INFO L124 PetriNetUnfolderBase]: 1205/2662 cut-off events. [2024-01-29 14:18:43,091 INFO L125 PetriNetUnfolderBase]: For 260/284 co-relation queries the response was YES. [2024-01-29 14:18:43,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4943 conditions, 2662 events. 1205/2662 cut-off events. For 260/284 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19948 event pairs, 475 based on Foata normal form. 2/1768 useless extension candidates. Maximal degree in co-relation 3062. Up to 1357 conditions per place. [2024-01-29 14:18:43,103 INFO L140 encePairwiseOnDemand]: 130/137 looper letters, 66 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-01-29 14:18:43,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 148 transitions, 484 flow [2024-01-29 14:18:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2024-01-29 14:18:43,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7956204379562044 [2024-01-29 14:18:43,106 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 295 flow. Second operand 3 states and 327 transitions. [2024-01-29 14:18:43,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 148 transitions, 484 flow [2024-01-29 14:18:43,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 148 transitions, 479 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:18:43,110 INFO L231 Difference]: Finished difference. Result has 122 places, 126 transitions, 295 flow [2024-01-29 14:18:43,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=122, PETRI_TRANSITIONS=126} [2024-01-29 14:18:43,111 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -11 predicate places. [2024-01-29 14:18:43,111 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 126 transitions, 295 flow [2024-01-29 14:18:43,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:43,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:43,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-29 14:18:43,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:18:43,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:43,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash 13097153, now seen corresponding path program 1 times [2024-01-29 14:18:43,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:43,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808492538] [2024-01-29 14:18:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:43,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:43,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808492538] [2024-01-29 14:18:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808492538] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:43,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:43,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:18:43,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048894547] [2024-01-29 14:18:43,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:43,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:43,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:43,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 137 [2024-01-29 14:18:43,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:43,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:43,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 137 [2024-01-29 14:18:43,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:43,482 INFO L124 PetriNetUnfolderBase]: 1313/2855 cut-off events. [2024-01-29 14:18:43,482 INFO L125 PetriNetUnfolderBase]: For 313/313 co-relation queries the response was YES. [2024-01-29 14:18:43,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5362 conditions, 2855 events. 1313/2855 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 21852 event pairs, 619 based on Foata normal form. 4/2021 useless extension candidates. Maximal degree in co-relation 4430. Up to 1600 conditions per place. [2024-01-29 14:18:43,498 INFO L140 encePairwiseOnDemand]: 129/137 looper letters, 63 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2024-01-29 14:18:43,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 142 transitions, 474 flow [2024-01-29 14:18:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2024-01-29 14:18:43,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7907542579075426 [2024-01-29 14:18:43,500 INFO L175 Difference]: Start difference. First operand has 122 places, 126 transitions, 295 flow. Second operand 3 states and 325 transitions. [2024-01-29 14:18:43,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 142 transitions, 474 flow [2024-01-29 14:18:43,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 142 transitions, 466 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:43,506 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 292 flow [2024-01-29 14:18:43,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2024-01-29 14:18:43,508 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -14 predicate places. [2024-01-29 14:18:43,508 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 292 flow [2024-01-29 14:18:43,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:43,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:43,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:18:43,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:18:43,509 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:43,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:43,510 INFO L85 PathProgramCache]: Analyzing trace with hash 406012229, now seen corresponding path program 1 times [2024-01-29 14:18:43,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:43,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074702195] [2024-01-29 14:18:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:43,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:43,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:43,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074702195] [2024-01-29 14:18:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074702195] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:43,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:18:43,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688854232] [2024-01-29 14:18:43,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:43,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:43,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 137 [2024-01-29 14:18:43,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:43,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:43,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 137 [2024-01-29 14:18:43,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:43,800 INFO L124 PetriNetUnfolderBase]: 1525/3265 cut-off events. [2024-01-29 14:18:43,800 INFO L125 PetriNetUnfolderBase]: For 364/368 co-relation queries the response was YES. [2024-01-29 14:18:43,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 3265 events. 1525/3265 cut-off events. For 364/368 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 25048 event pairs, 799 based on Foata normal form. 2/2352 useless extension candidates. Maximal degree in co-relation 5242. Up to 2186 conditions per place. [2024-01-29 14:18:43,820 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 46 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2024-01-29 14:18:43,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 120 transitions, 384 flow [2024-01-29 14:18:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:43,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2024-01-29 14:18:43,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7396593673965937 [2024-01-29 14:18:43,822 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 292 flow. Second operand 3 states and 304 transitions. [2024-01-29 14:18:43,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 120 transitions, 384 flow [2024-01-29 14:18:43,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:43,825 INFO L231 Difference]: Finished difference. Result has 117 places, 120 transitions, 286 flow [2024-01-29 14:18:43,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=117, PETRI_TRANSITIONS=120} [2024-01-29 14:18:43,826 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -16 predicate places. [2024-01-29 14:18:43,826 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 120 transitions, 286 flow [2024-01-29 14:18:43,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:43,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:43,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 14:18:43,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:18:43,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:43,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash -298522328, now seen corresponding path program 1 times [2024-01-29 14:18:43,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:43,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642887100] [2024-01-29 14:18:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:43,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:43,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:43,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642887100] [2024-01-29 14:18:43,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642887100] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:43,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:43,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:18:43,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425678115] [2024-01-29 14:18:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:43,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:43,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:43,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:43,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 137 [2024-01-29 14:18:43,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 120 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:43,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:43,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 137 [2024-01-29 14:18:43,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:44,092 INFO L124 PetriNetUnfolderBase]: 1546/3380 cut-off events. [2024-01-29 14:18:44,092 INFO L125 PetriNetUnfolderBase]: For 341/357 co-relation queries the response was YES. [2024-01-29 14:18:44,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 3380 events. 1546/3380 cut-off events. For 341/357 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 26004 event pairs, 798 based on Foata normal form. 0/2369 useless extension candidates. Maximal degree in co-relation 6273. Up to 2207 conditions per place. [2024-01-29 14:18:44,103 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 47 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-01-29 14:18:44,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 119 transitions, 382 flow [2024-01-29 14:18:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2024-01-29 14:18:44,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7396593673965937 [2024-01-29 14:18:44,105 INFO L175 Difference]: Start difference. First operand has 117 places, 120 transitions, 286 flow. Second operand 3 states and 304 transitions. [2024-01-29 14:18:44,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 119 transitions, 382 flow [2024-01-29 14:18:44,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 119 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:44,108 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 284 flow [2024-01-29 14:18:44,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2024-01-29 14:18:44,109 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -17 predicate places. [2024-01-29 14:18:44,109 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 284 flow [2024-01-29 14:18:44,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:44,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:44,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:44,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:18:44,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:44,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:44,110 INFO L85 PathProgramCache]: Analyzing trace with hash -664257052, now seen corresponding path program 1 times [2024-01-29 14:18:44,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:44,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245964368] [2024-01-29 14:18:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:44,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:44,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:44,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245964368] [2024-01-29 14:18:44,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245964368] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:44,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:44,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:18:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864823364] [2024-01-29 14:18:44,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:44,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:44,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:44,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 137 [2024-01-29 14:18:44,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:44,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:44,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 137 [2024-01-29 14:18:44,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:44,399 INFO L124 PetriNetUnfolderBase]: 1588/3724 cut-off events. [2024-01-29 14:18:44,399 INFO L125 PetriNetUnfolderBase]: For 355/355 co-relation queries the response was YES. [2024-01-29 14:18:44,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6854 conditions, 3724 events. 1588/3724 cut-off events. For 355/355 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 30393 event pairs, 402 based on Foata normal form. 38/2787 useless extension candidates. Maximal degree in co-relation 6837. Up to 1780 conditions per place. [2024-01-29 14:18:44,412 INFO L140 encePairwiseOnDemand]: 130/137 looper letters, 69 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-01-29 14:18:44,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 140 transitions, 484 flow [2024-01-29 14:18:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2024-01-29 14:18:44,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.805352798053528 [2024-01-29 14:18:44,413 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 284 flow. Second operand 3 states and 331 transitions. [2024-01-29 14:18:44,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 140 transitions, 484 flow [2024-01-29 14:18:44,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 140 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:44,418 INFO L231 Difference]: Finished difference. Result has 113 places, 115 transitions, 280 flow [2024-01-29 14:18:44,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=113, PETRI_TRANSITIONS=115} [2024-01-29 14:18:44,419 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -20 predicate places. [2024-01-29 14:18:44,419 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 280 flow [2024-01-29 14:18:44,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:44,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:44,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:44,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 14:18:44,420 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:44,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1935970360, now seen corresponding path program 1 times [2024-01-29 14:18:44,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:44,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144273440] [2024-01-29 14:18:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:44,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:44,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:44,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144273440] [2024-01-29 14:18:44,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144273440] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:44,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:44,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:18:44,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790493397] [2024-01-29 14:18:44,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:44,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:44,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:44,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:44,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:44,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 137 [2024-01-29 14:18:44,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:44,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:44,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 137 [2024-01-29 14:18:44,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:44,764 INFO L124 PetriNetUnfolderBase]: 1736/4333 cut-off events. [2024-01-29 14:18:44,764 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2024-01-29 14:18:44,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7999 conditions, 4333 events. 1736/4333 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 39340 event pairs, 354 based on Foata normal form. 34/3366 useless extension candidates. Maximal degree in co-relation 3246. Up to 2073 conditions per place. [2024-01-29 14:18:44,777 INFO L140 encePairwiseOnDemand]: 131/137 looper letters, 70 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2024-01-29 14:18:44,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 136 transitions, 486 flow [2024-01-29 14:18:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2024-01-29 14:18:44,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7956204379562044 [2024-01-29 14:18:44,778 INFO L175 Difference]: Start difference. First operand has 113 places, 115 transitions, 280 flow. Second operand 3 states and 327 transitions. [2024-01-29 14:18:44,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 136 transitions, 486 flow [2024-01-29 14:18:44,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 136 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:18:44,782 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 280 flow [2024-01-29 14:18:44,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2024-01-29 14:18:44,783 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -21 predicate places. [2024-01-29 14:18:44,783 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 280 flow [2024-01-29 14:18:44,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:44,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:44,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:44,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 14:18:44,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:44,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:44,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1672552542, now seen corresponding path program 1 times [2024-01-29 14:18:44,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:44,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411690912] [2024-01-29 14:18:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:44,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:44,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411690912] [2024-01-29 14:18:44,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411690912] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:44,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:44,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:18:44,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115530460] [2024-01-29 14:18:44,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:44,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:44,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:44,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:44,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 137 [2024-01-29 14:18:44,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:44,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:44,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 137 [2024-01-29 14:18:44,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:45,055 INFO L124 PetriNetUnfolderBase]: 1315/3192 cut-off events. [2024-01-29 14:18:45,056 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-01-29 14:18:45,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6088 conditions, 3192 events. 1315/3192 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 27512 event pairs, 633 based on Foata normal form. 105/2383 useless extension candidates. Maximal degree in co-relation 2330. Up to 1522 conditions per place. [2024-01-29 14:18:45,065 INFO L140 encePairwiseOnDemand]: 132/137 looper letters, 61 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-01-29 14:18:45,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 127 transitions, 451 flow [2024-01-29 14:18:45,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2024-01-29 14:18:45,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7907542579075426 [2024-01-29 14:18:45,066 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 280 flow. Second operand 3 states and 325 transitions. [2024-01-29 14:18:45,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 127 transitions, 451 flow [2024-01-29 14:18:45,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 127 transitions, 446 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-29 14:18:45,070 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 280 flow [2024-01-29 14:18:45,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=112, PETRI_TRANSITIONS=110} [2024-01-29 14:18:45,071 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -21 predicate places. [2024-01-29 14:18:45,071 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 280 flow [2024-01-29 14:18:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:45,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:45,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:45,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 14:18:45,072 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:45,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2120624312, now seen corresponding path program 1 times [2024-01-29 14:18:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:45,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142359437] [2024-01-29 14:18:45,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:45,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:45,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142359437] [2024-01-29 14:18:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142359437] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:45,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:45,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:18:45,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452366669] [2024-01-29 14:18:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:45,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 137 [2024-01-29 14:18:45,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:45,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:45,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 137 [2024-01-29 14:18:45,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:45,303 INFO L124 PetriNetUnfolderBase]: 1079/2694 cut-off events. [2024-01-29 14:18:45,303 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2024-01-29 14:18:45,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5209 conditions, 2694 events. 1079/2694 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22874 event pairs, 537 based on Foata normal form. 66/1952 useless extension candidates. Maximal degree in co-relation 4070. Up to 1319 conditions per place. [2024-01-29 14:18:45,314 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 63 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2024-01-29 14:18:45,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 126 transitions, 461 flow [2024-01-29 14:18:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2024-01-29 14:18:45,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7858880778588808 [2024-01-29 14:18:45,315 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 280 flow. Second operand 3 states and 323 transitions. [2024-01-29 14:18:45,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 126 transitions, 461 flow [2024-01-29 14:18:45,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 126 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:45,319 INFO L231 Difference]: Finished difference. Result has 112 places, 109 transitions, 282 flow [2024-01-29 14:18:45,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=112, PETRI_TRANSITIONS=109} [2024-01-29 14:18:45,320 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -21 predicate places. [2024-01-29 14:18:45,320 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 282 flow [2024-01-29 14:18:45,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:45,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:45,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:45,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 14:18:45,321 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:45,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash 711726794, now seen corresponding path program 1 times [2024-01-29 14:18:45,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:45,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566751262] [2024-01-29 14:18:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:45,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:45,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566751262] [2024-01-29 14:18:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566751262] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:45,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:45,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:18:45,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282609984] [2024-01-29 14:18:45,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:45,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:18:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:18:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:18:45,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 137 [2024-01-29 14:18:45,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 109 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:45,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:45,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 137 [2024-01-29 14:18:45,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:45,599 INFO L124 PetriNetUnfolderBase]: 971/2298 cut-off events. [2024-01-29 14:18:45,599 INFO L125 PetriNetUnfolderBase]: For 448/460 co-relation queries the response was YES. [2024-01-29 14:18:45,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2298 events. 971/2298 cut-off events. For 448/460 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 17484 event pairs, 309 based on Foata normal form. 614/2333 useless extension candidates. Maximal degree in co-relation 3894. Up to 1400 conditions per place. [2024-01-29 14:18:45,608 INFO L140 encePairwiseOnDemand]: 123/137 looper letters, 59 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-01-29 14:18:45,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 115 transitions, 437 flow [2024-01-29 14:18:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:18:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:18:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2024-01-29 14:18:45,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135036496350365 [2024-01-29 14:18:45,610 INFO L175 Difference]: Start difference. First operand has 112 places, 109 transitions, 282 flow. Second operand 4 states and 391 transitions. [2024-01-29 14:18:45,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 115 transitions, 437 flow [2024-01-29 14:18:45,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 115 transitions, 431 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:45,613 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 258 flow [2024-01-29 14:18:45,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2024-01-29 14:18:45,614 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -32 predicate places. [2024-01-29 14:18:45,614 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 258 flow [2024-01-29 14:18:45,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:45,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:45,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:45,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 14:18:45,615 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:45,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:45,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1067504930, now seen corresponding path program 1 times [2024-01-29 14:18:45,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:45,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21325304] [2024-01-29 14:18:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:45,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:45,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:45,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21325304] [2024-01-29 14:18:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21325304] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:45,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:18:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975431745] [2024-01-29 14:18:45,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:45,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:18:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:18:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:18:45,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 137 [2024-01-29 14:18:45,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:45,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:45,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 137 [2024-01-29 14:18:45,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:45,848 INFO L124 PetriNetUnfolderBase]: 734/1601 cut-off events. [2024-01-29 14:18:45,849 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-01-29 14:18:45,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1601 events. 734/1601 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10439 event pairs, 73 based on Foata normal form. 412/1711 useless extension candidates. Maximal degree in co-relation 3432. Up to 1017 conditions per place. [2024-01-29 14:18:45,854 INFO L140 encePairwiseOnDemand]: 123/137 looper letters, 68 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-01-29 14:18:45,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 469 flow [2024-01-29 14:18:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:18:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:18:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2024-01-29 14:18:45,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7262773722627737 [2024-01-29 14:18:45,856 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 258 flow. Second operand 4 states and 398 transitions. [2024-01-29 14:18:45,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 469 flow [2024-01-29 14:18:45,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 466 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:45,858 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 235 flow [2024-01-29 14:18:45,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2024-01-29 14:18:45,859 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -43 predicate places. [2024-01-29 14:18:45,859 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 235 flow [2024-01-29 14:18:45,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:45,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:45,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:45,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 14:18:45,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:45,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1395932565, now seen corresponding path program 1 times [2024-01-29 14:18:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:45,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260369427] [2024-01-29 14:18:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:45,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:45,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:45,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260369427] [2024-01-29 14:18:45,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260369427] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:45,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:45,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:18:45,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740725201] [2024-01-29 14:18:45,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:45,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:45,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:45,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:45,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:45,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 137 [2024-01-29 14:18:45,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:45,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:45,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 137 [2024-01-29 14:18:45,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:46,108 INFO L124 PetriNetUnfolderBase]: 1252/2830 cut-off events. [2024-01-29 14:18:46,108 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2024-01-29 14:18:46,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6100 conditions, 2830 events. 1252/2830 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20317 event pairs, 412 based on Foata normal form. 0/2290 useless extension candidates. Maximal degree in co-relation 6044. Up to 1048 conditions per place. [2024-01-29 14:18:46,118 INFO L140 encePairwiseOnDemand]: 128/137 looper letters, 66 selfloop transitions, 7 changer transitions 0/114 dead transitions. [2024-01-29 14:18:46,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 472 flow [2024-01-29 14:18:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2024-01-29 14:18:46,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8102189781021898 [2024-01-29 14:18:46,120 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 235 flow. Second operand 3 states and 333 transitions. [2024-01-29 14:18:46,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 472 flow [2024-01-29 14:18:46,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 467 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:46,123 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 300 flow [2024-01-29 14:18:46,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-01-29 14:18:46,124 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -41 predicate places. [2024-01-29 14:18:46,124 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 300 flow [2024-01-29 14:18:46,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:46,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:46,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:46,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 14:18:46,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:46,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:46,125 INFO L85 PathProgramCache]: Analyzing trace with hash 229275143, now seen corresponding path program 1 times [2024-01-29 14:18:46,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:46,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10705651] [2024-01-29 14:18:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:46,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:46,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10705651] [2024-01-29 14:18:46,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10705651] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:18:46,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193184588] [2024-01-29 14:18:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:46,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:18:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:18:46,170 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) [2024-01-29 14:18:46,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-29 14:18:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:46,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-29 14:18:46,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:18:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:46,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:18:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:46,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193184588] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:18:46,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:18:46,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-01-29 14:18:46,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683536351] [2024-01-29 14:18:46,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:18:46,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-29 14:18:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:46,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-29 14:18:46,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-29 14:18:46,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 137 [2024-01-29 14:18:46,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:46,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:46,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 137 [2024-01-29 14:18:46,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:46,946 INFO L124 PetriNetUnfolderBase]: 2141/5443 cut-off events. [2024-01-29 14:18:46,946 INFO L125 PetriNetUnfolderBase]: For 5152/5208 co-relation queries the response was YES. [2024-01-29 14:18:46,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12523 conditions, 5443 events. 2141/5443 cut-off events. For 5152/5208 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 43972 event pairs, 180 based on Foata normal form. 204/5171 useless extension candidates. Maximal degree in co-relation 12464. Up to 1413 conditions per place. [2024-01-29 14:18:46,970 INFO L140 encePairwiseOnDemand]: 128/137 looper letters, 128 selfloop transitions, 20 changer transitions 0/189 dead transitions. [2024-01-29 14:18:46,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 189 transitions, 929 flow [2024-01-29 14:18:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-29 14:18:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-29 14:18:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 723 transitions. [2024-01-29 14:18:46,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7539103232533889 [2024-01-29 14:18:46,973 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 300 flow. Second operand 7 states and 723 transitions. [2024-01-29 14:18:46,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 189 transitions, 929 flow [2024-01-29 14:18:46,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 189 transitions, 881 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:46,984 INFO L231 Difference]: Finished difference. Result has 99 places, 104 transitions, 431 flow [2024-01-29 14:18:46,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=99, PETRI_TRANSITIONS=104} [2024-01-29 14:18:46,985 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -34 predicate places. [2024-01-29 14:18:46,985 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 104 transitions, 431 flow [2024-01-29 14:18:46,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:46,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:46,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:47,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-29 14:18:47,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-01-29 14:18:47,208 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:47,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash -484360124, now seen corresponding path program 1 times [2024-01-29 14:18:47,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:47,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030483745] [2024-01-29 14:18:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:47,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:47,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:47,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030483745] [2024-01-29 14:18:47,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030483745] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:18:47,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336340347] [2024-01-29 14:18:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:47,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:18:47,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:18:47,400 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) [2024-01-29 14:18:47,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-29 14:18:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:47,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:18:47,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:18:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:47,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:18:47,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336340347] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:47,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-29 14:18:47,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2024-01-29 14:18:47,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422340019] [2024-01-29 14:18:47,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:47,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:18:47,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:18:47,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-29 14:18:47,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 137 [2024-01-29 14:18:47,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 104 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:47,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:47,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 137 [2024-01-29 14:18:47,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:48,146 INFO L124 PetriNetUnfolderBase]: 3762/9072 cut-off events. [2024-01-29 14:18:48,147 INFO L125 PetriNetUnfolderBase]: For 11530/11606 co-relation queries the response was YES. [2024-01-29 14:18:48,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22524 conditions, 9072 events. 3762/9072 cut-off events. For 11530/11606 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 77683 event pairs, 927 based on Foata normal form. 47/8228 useless extension candidates. Maximal degree in co-relation 22462. Up to 3363 conditions per place. [2024-01-29 14:18:48,175 INFO L140 encePairwiseOnDemand]: 127/137 looper letters, 112 selfloop transitions, 19 changer transitions 0/172 dead transitions. [2024-01-29 14:18:48,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 172 transitions, 1014 flow [2024-01-29 14:18:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:18:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:18:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2024-01-29 14:18:48,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7773722627737226 [2024-01-29 14:18:48,177 INFO L175 Difference]: Start difference. First operand has 99 places, 104 transitions, 431 flow. Second operand 4 states and 426 transitions. [2024-01-29 14:18:48,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 172 transitions, 1014 flow [2024-01-29 14:18:48,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 951 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-01-29 14:18:48,187 INFO L231 Difference]: Finished difference. Result has 104 places, 120 transitions, 628 flow [2024-01-29 14:18:48,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=628, PETRI_PLACES=104, PETRI_TRANSITIONS=120} [2024-01-29 14:18:48,188 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -29 predicate places. [2024-01-29 14:18:48,188 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 120 transitions, 628 flow [2024-01-29 14:18:48,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:48,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:48,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:48,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-29 14:18:48,399 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,SelfDestructingSolverStorable13 [2024-01-29 14:18:48,399 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:48,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:48,401 INFO L85 PathProgramCache]: Analyzing trace with hash -47871937, now seen corresponding path program 1 times [2024-01-29 14:18:48,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:48,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952606101] [2024-01-29 14:18:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:48,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:48,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:48,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952606101] [2024-01-29 14:18:48,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952606101] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:18:48,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543369848] [2024-01-29 14:18:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:48,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:18:48,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:18:48,497 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) [2024-01-29 14:18:48,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-29 14:18:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:48,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:18:48,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:18:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:48,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:18:48,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543369848] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:48,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-29 14:18:48,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2024-01-29 14:18:48,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033012907] [2024-01-29 14:18:48,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:48,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:18:48,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:48,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:18:48,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-29 14:18:48,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 137 [2024-01-29 14:18:48,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 120 transitions, 628 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:48,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:48,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 137 [2024-01-29 14:18:48,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:50,247 INFO L124 PetriNetUnfolderBase]: 7040/17046 cut-off events. [2024-01-29 14:18:50,247 INFO L125 PetriNetUnfolderBase]: For 29668/29696 co-relation queries the response was YES. [2024-01-29 14:18:50,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43143 conditions, 17046 events. 7040/17046 cut-off events. For 29668/29696 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 163825 event pairs, 1875 based on Foata normal form. 28/15397 useless extension candidates. Maximal degree in co-relation 43077. Up to 5787 conditions per place. [2024-01-29 14:18:50,350 INFO L140 encePairwiseOnDemand]: 129/137 looper letters, 136 selfloop transitions, 38 changer transitions 0/215 dead transitions. [2024-01-29 14:18:50,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 215 transitions, 1597 flow [2024-01-29 14:18:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:18:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:18:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2024-01-29 14:18:50,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8175182481751825 [2024-01-29 14:18:50,353 INFO L175 Difference]: Start difference. First operand has 104 places, 120 transitions, 628 flow. Second operand 4 states and 448 transitions. [2024-01-29 14:18:50,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 215 transitions, 1597 flow [2024-01-29 14:18:50,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 215 transitions, 1597 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 14:18:50,529 INFO L231 Difference]: Finished difference. Result has 109 places, 156 transitions, 1206 flow [2024-01-29 14:18:50,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1206, PETRI_PLACES=109, PETRI_TRANSITIONS=156} [2024-01-29 14:18:50,529 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -24 predicate places. [2024-01-29 14:18:50,529 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 156 transitions, 1206 flow [2024-01-29 14:18:50,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:50,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:50,530 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:50,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-29 14:18:50,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:18:50,730 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:50,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1723787195, now seen corresponding path program 1 times [2024-01-29 14:18:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:50,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417875242] [2024-01-29 14:18:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:50,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:50,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:50,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417875242] [2024-01-29 14:18:50,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417875242] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:50,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:50,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:18:50,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611896157] [2024-01-29 14:18:50,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:50,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:50,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 137 [2024-01-29 14:18:50,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 156 transitions, 1206 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:50,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:50,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 137 [2024-01-29 14:18:50,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:52,945 INFO L124 PetriNetUnfolderBase]: 10367/23115 cut-off events. [2024-01-29 14:18:52,945 INFO L125 PetriNetUnfolderBase]: For 54544/55324 co-relation queries the response was YES. [2024-01-29 14:18:53,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61629 conditions, 23115 events. 10367/23115 cut-off events. For 54544/55324 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 224428 event pairs, 5349 based on Foata normal form. 486/21353 useless extension candidates. Maximal degree in co-relation 61559. Up to 12782 conditions per place. [2024-01-29 14:18:53,125 INFO L140 encePairwiseOnDemand]: 131/137 looper letters, 157 selfloop transitions, 5 changer transitions 0/199 dead transitions. [2024-01-29 14:18:53,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 199 transitions, 1963 flow [2024-01-29 14:18:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2024-01-29 14:18:53,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7469586374695864 [2024-01-29 14:18:53,127 INFO L175 Difference]: Start difference. First operand has 109 places, 156 transitions, 1206 flow. Second operand 3 states and 307 transitions. [2024-01-29 14:18:53,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 199 transitions, 1963 flow [2024-01-29 14:18:53,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 199 transitions, 1955 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-29 14:18:53,192 INFO L231 Difference]: Finished difference. Result has 113 places, 158 transitions, 1236 flow [2024-01-29 14:18:53,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1236, PETRI_PLACES=113, PETRI_TRANSITIONS=158} [2024-01-29 14:18:53,192 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -20 predicate places. [2024-01-29 14:18:53,193 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 158 transitions, 1236 flow [2024-01-29 14:18:53,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:53,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:53,193 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:53,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-29 14:18:53,194 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:18:53,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:53,194 INFO L85 PathProgramCache]: Analyzing trace with hash 704406210, now seen corresponding path program 1 times [2024-01-29 14:18:53,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:53,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702459232] [2024-01-29 14:18:53,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:53,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:53,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:53,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702459232] [2024-01-29 14:18:53,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702459232] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:18:53,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266310858] [2024-01-29 14:18:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:53,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:18:53,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:18:53,305 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) [2024-01-29 14:18:53,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-29 14:18:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:53,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:18:53,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:18:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:53,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:18:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:53,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266310858] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:18:53,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:18:53,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-01-29 14:18:53,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22640682] [2024-01-29 14:18:53,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:18:53,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-29 14:18:53,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:53,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-29 14:18:53,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-29 14:18:53,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 137 [2024-01-29 14:18:53,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 158 transitions, 1236 flow. Second operand has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:53,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:53,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 137 [2024-01-29 14:18:53,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:19:00,446 INFO L124 PetriNetUnfolderBase]: 27919/67438 cut-off events. [2024-01-29 14:19:00,446 INFO L125 PetriNetUnfolderBase]: For 167771/168093 co-relation queries the response was YES. [2024-01-29 14:19:00,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177350 conditions, 67438 events. 27919/67438 cut-off events. For 167771/168093 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 744969 event pairs, 1664 based on Foata normal form. 1208/63061 useless extension candidates. Maximal degree in co-relation 177274. Up to 9044 conditions per place. [2024-01-29 14:19:00,859 INFO L140 encePairwiseOnDemand]: 128/137 looper letters, 308 selfloop transitions, 205 changer transitions 0/555 dead transitions. [2024-01-29 14:19:00,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 555 transitions, 5479 flow [2024-01-29 14:19:00,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-29 14:19:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-29 14:19:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 962 transitions. [2024-01-29 14:19:00,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7802108678021087 [2024-01-29 14:19:00,861 INFO L175 Difference]: Start difference. First operand has 113 places, 158 transitions, 1236 flow. Second operand 9 states and 962 transitions. [2024-01-29 14:19:00,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 555 transitions, 5479 flow [2024-01-29 14:19:01,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 555 transitions, 5441 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-29 14:19:01,132 INFO L231 Difference]: Finished difference. Result has 125 places, 348 transitions, 4239 flow [2024-01-29 14:19:01,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4239, PETRI_PLACES=125, PETRI_TRANSITIONS=348} [2024-01-29 14:19:01,133 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, -8 predicate places. [2024-01-29 14:19:01,133 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 348 transitions, 4239 flow [2024-01-29 14:19:01,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:19:01,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:19:01,133 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:19:01,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-29 14:19:01,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-01-29 14:19:01,343 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:19:01,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:19:01,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1241673061, now seen corresponding path program 2 times [2024-01-29 14:19:01,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:19:01,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52900578] [2024-01-29 14:19:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:19:01,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:19:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:19:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:19:01,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:19:01,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52900578] [2024-01-29 14:19:01,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52900578] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:19:01,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029497667] [2024-01-29 14:19:01,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-29 14:19:01,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:19:01,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:19:01,452 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) [2024-01-29 14:19:01,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-29 14:19:01,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-29 14:19:01,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:19:01,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-29 14:19:01,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:19:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-29 14:19:01,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:19:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-29 14:19:01,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029497667] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:19:01,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:19:01,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2024-01-29 14:19:01,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775296357] [2024-01-29 14:19:01,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:19:01,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-29 14:19:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:19:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-29 14:19:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2024-01-29 14:19:01,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 137 [2024-01-29 14:19:01,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 348 transitions, 4239 flow. Second operand has 9 states, 9 states have (on average 88.77777777777777) internal successors, (799), 9 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:19:01,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:19:01,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 137 [2024-01-29 14:19:01,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:19:17,228 INFO L124 PetriNetUnfolderBase]: 47199/115862 cut-off events. [2024-01-29 14:19:17,228 INFO L125 PetriNetUnfolderBase]: For 348585/349023 co-relation queries the response was YES. [2024-01-29 14:19:17,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315196 conditions, 115862 events. 47199/115862 cut-off events. For 348585/349023 co-relation queries the response was YES. Maximal size of possible extension queue 2125. Compared 1373520 event pairs, 7876 based on Foata normal form. 2276/108857 useless extension candidates. Maximal degree in co-relation 315115. Up to 25576 conditions per place. [2024-01-29 14:19:18,580 INFO L140 encePairwiseOnDemand]: 127/137 looper letters, 346 selfloop transitions, 372 changer transitions 0/760 dead transitions. [2024-01-29 14:19:18,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 760 transitions, 9469 flow [2024-01-29 14:19:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-29 14:19:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-29 14:19:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 954 transitions. [2024-01-29 14:19:18,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7737226277372263 [2024-01-29 14:19:18,584 INFO L175 Difference]: Start difference. First operand has 125 places, 348 transitions, 4239 flow. Second operand 9 states and 954 transitions. [2024-01-29 14:19:18,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 760 transitions, 9469 flow [2024-01-29 14:19:19,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 760 transitions, 9466 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:19:19,508 INFO L231 Difference]: Finished difference. Result has 137 places, 571 transitions, 8717 flow [2024-01-29 14:19:19,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=4236, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8717, PETRI_PLACES=137, PETRI_TRANSITIONS=571} [2024-01-29 14:19:19,510 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, 4 predicate places. [2024-01-29 14:19:19,510 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 571 transitions, 8717 flow [2024-01-29 14:19:19,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.77777777777777) internal successors, (799), 9 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:19:19,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:19:19,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:19:19,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-29 14:19:19,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-01-29 14:19:19,723 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:19:19,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:19:19,724 INFO L85 PathProgramCache]: Analyzing trace with hash 893729052, now seen corresponding path program 1 times [2024-01-29 14:19:19,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:19:19,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915004326] [2024-01-29 14:19:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:19:19,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:19:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:19:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:19:19,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:19:19,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915004326] [2024-01-29 14:19:19,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915004326] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:19:19,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:19:19,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:19:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476786536] [2024-01-29 14:19:19,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:19:19,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:19:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:19:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:19:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:19:19,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 137 [2024-01-29 14:19:19,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 571 transitions, 8717 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:19:19,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:19:19,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 137 [2024-01-29 14:19:19,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:19:31,770 INFO L124 PetriNetUnfolderBase]: 32634/76398 cut-off events. [2024-01-29 14:19:31,770 INFO L125 PetriNetUnfolderBase]: For 300867/302221 co-relation queries the response was YES. [2024-01-29 14:19:32,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217396 conditions, 76398 events. 32634/76398 cut-off events. For 300867/302221 co-relation queries the response was YES. Maximal size of possible extension queue 1374. Compared 850144 event pairs, 17804 based on Foata normal form. 2984/74350 useless extension candidates. Maximal degree in co-relation 217310. Up to 37418 conditions per place. [2024-01-29 14:19:32,331 INFO L140 encePairwiseOnDemand]: 130/137 looper letters, 579 selfloop transitions, 5 changer transitions 0/623 dead transitions. [2024-01-29 14:19:32,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 623 transitions, 10909 flow [2024-01-29 14:19:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:19:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:19:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2024-01-29 14:19:32,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7262773722627737 [2024-01-29 14:19:32,335 INFO L175 Difference]: Start difference. First operand has 137 places, 571 transitions, 8717 flow. Second operand 4 states and 398 transitions. [2024-01-29 14:19:32,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 623 transitions, 10909 flow [2024-01-29 14:19:33,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 623 transitions, 10486 flow, removed 210 selfloop flow, removed 1 redundant places. [2024-01-29 14:19:33,021 INFO L231 Difference]: Finished difference. Result has 141 places, 404 transitions, 5795 flow [2024-01-29 14:19:33,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=5764, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5795, PETRI_PLACES=141, PETRI_TRANSITIONS=404} [2024-01-29 14:19:33,021 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, 8 predicate places. [2024-01-29 14:19:33,022 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 404 transitions, 5795 flow [2024-01-29 14:19:33,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:19:33,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:19:33,022 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:19:33,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-29 14:19:33,022 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 14:19:33,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:19:33,023 INFO L85 PathProgramCache]: Analyzing trace with hash 140364113, now seen corresponding path program 1 times [2024-01-29 14:19:33,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:19:33,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493242757] [2024-01-29 14:19:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:19:33,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:19:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:19:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-29 14:19:33,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:19:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493242757] [2024-01-29 14:19:33,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493242757] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:19:33,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:19:33,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:19:33,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267266202] [2024-01-29 14:19:33,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:19:33,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:19:33,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:19:33,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:19:33,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:19:33,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 137 [2024-01-29 14:19:33,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 404 transitions, 5795 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:19:33,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:19:33,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 137 [2024-01-29 14:19:33,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand