./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-mult-4.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/popl20-mult-4.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-mult-4.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-59af5db-m [2024-02-02 09:21:40,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:21:40,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:21:40,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:21:40,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:21:40,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:21:40,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:21:40,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:21:40,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:21:40,702 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:21:40,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:21:40,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:21:40,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:21:40,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:21:40,706 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:21:40,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:21:40,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:21:40,707 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:21:40,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:21:40,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:21:40,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:21:40,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:21:40,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:21:40,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:21:40,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:21:40,709 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:21:40,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:21:40,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:21:40,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:21:40,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:21:40,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:21:40,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:21:40,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:21:40,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:21:40,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:21:40,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:21:40,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:21:40,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:21:40,714 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:21:40,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:21:40,715 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:21:40,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:21:40,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:21:40,716 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:21:40,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:21:40,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:21:40,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:21:41,000 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:21:41,003 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:21:41,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2024-02-02 09:21:42,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:21:42,432 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:21:42,433 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2024-02-02 09:21:42,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa6c721f/27003c7b96054b2198a2199b23dd4291/FLAGd818aaa8b [2024-02-02 09:21:42,452 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa6c721f/27003c7b96054b2198a2199b23dd4291 [2024-02-02 09:21:42,454 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:21:42,455 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:21:42,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-mult-4.wvr.yml/witness.yml [2024-02-02 09:21:42,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:21:42,605 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:21:42,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:21:42,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:21:42,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:21:42,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:21:42" (1/2) ... [2024-02-02 09:21:42,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3517ee4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:42, skipping insertion in model container [2024-02-02 09:21:42,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:21:42" (1/2) ... [2024-02-02 09:21:42,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4db76509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:42, skipping insertion in model container [2024-02-02 09:21:42,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:21:42" (2/2) ... [2024-02-02 09:21:42,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3517ee4c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42, skipping insertion in model container [2024-02-02 09:21:42,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:21:42" (2/2) ... [2024-02-02 09:21:42,616 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:21:42,646 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:21:42,651 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] ((unsigned long )_argptr == 0UL) && ((((((((((i == 8U || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) || i == 9U) [2024-02-02 09:21:42,651 INFO L101 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,652 INFO L101 nessWitnessExtractor]: Location invariant before [L63-L63] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-02 09:21:42,652 INFO L101 nessWitnessExtractor]: Location invariant before [L55-L55] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) [2024-02-02 09:21:42,652 INFO L101 nessWitnessExtractor]: Location invariant before [L64-L64] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-02 09:21:42,653 INFO L101 nessWitnessExtractor]: Location invariant before [L42-L42] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-02 09:21:42,653 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) [2024-02-02 09:21:42,653 INFO L101 nessWitnessExtractor]: Loop invariant at [L51-L56] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || 10U <= i) [2024-02-02 09:21:42,654 INFO L101 nessWitnessExtractor]: Location invariant before [L73-L73] ((unsigned long )_argptr == 0UL) && ((((((((((i == 8U || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) || i == 9U) [2024-02-02 09:21:42,654 INFO L101 nessWitnessExtractor]: Loop invariant at [L72-L77] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || 10U <= i) [2024-02-02 09:21:42,654 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] ((unsigned long )_argptr == 0UL) && ((((((((((i == 8U || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) || i == 9U) [2024-02-02 09:21:42,654 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) [2024-02-02 09:21:42,654 INFO L101 nessWitnessExtractor]: Location invariant before [L76-L76] ((unsigned long )_argptr == 0UL) && ((((((((((i == 8U || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) || i == 9U) [2024-02-02 09:21:42,654 INFO L101 nessWitnessExtractor]: Loop invariant at [L41-L45] ((unsigned long )_argptr == 0UL) && ((((((((((((12U <= i || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-02 09:21:42,654 INFO L101 nessWitnessExtractor]: Location invariant before [L85-L85] (((((((0LL - (long long )c) + (long long )counter >= 0LL) && ((long long )c + (long long )counter >= 0LL)) && ((0LL - (long long )c) - (long long )counter >= 0LL)) && ((long long )c - (long long )counter >= 0LL)) && (N == 0U)) && (counter == 0U)) && (c == 0U) [2024-02-02 09:21:42,655 INFO L101 nessWitnessExtractor]: Location invariant before [L43-L43] ((((((((0LL - (long long )c) + (long long )counter >= 0LL) && ((long long )c + (long long )counter >= 0LL)) && ((0LL - (long long )c) - (long long )counter >= 0LL)) && ((long long )c - (long long )counter >= 0LL)) && (counter == 0U)) && (c == 0U)) && ((unsigned long )_argptr == 0UL)) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-02 09:21:42,655 INFO L101 nessWitnessExtractor]: Loop invariant at [L62-L66] ((unsigned long )_argptr == 0UL) && ((((((((((((12U <= i || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-02 09:21:42,655 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) [2024-02-02 09:21:42,655 INFO L101 nessWitnessExtractor]: Location invariant before [L68-L68] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,655 INFO L101 nessWitnessExtractor]: Location invariant before [L91-L91] counter == 0U [2024-02-02 09:21:42,655 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] ((((((0LL - (long long )c) + (long long )counter >= 0LL) && ((long long )c + (long long )counter >= 0LL)) && ((0LL - (long long )c) - (long long )counter >= 0LL)) && ((long long )c - (long long )counter >= 0LL)) && (counter == 0U)) && (c == 0U) [2024-02-02 09:21:42,656 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,656 INFO L101 nessWitnessExtractor]: Location invariant before [L88-L88] counter == 0U [2024-02-02 09:21:42,656 INFO L101 nessWitnessExtractor]: Location invariant before [L65-L65] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-02 09:21:42,657 INFO L101 nessWitnessExtractor]: Location invariant before [L44-L44] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-02 09:21:42,657 INFO L101 nessWitnessExtractor]: Location invariant before [L79-L79] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:21:42,841 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/popl20-mult-4.wvr.c[2664,2677] [2024-02-02 09:21:42,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:21:42,853 INFO L202 MainTranslator]: Completed pre-run 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 [2024-02-02 09:21:42,975 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/popl20-mult-4.wvr.c[2664,2677] [2024-02-02 09:21:42,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:21:42,996 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:21:42,996 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42 WrapperNode [2024-02-02 09:21:42,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:21:42,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:21:42,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:21:42,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:21:43,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,072 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 140 [2024-02-02 09:21:43,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:21:43,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:21:43,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:21:43,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:21:43,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,132 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-02 09:21:43,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:21:43,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:21:43,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:21:43,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:21:43,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:43,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:21:43,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:21:43,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 09:21:43,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 09:21:43,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:21:43,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-02 09:21:43,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-02 09:21:43,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-02 09:21:43,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-02 09:21:43,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-02 09:21:43,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-02 09:21:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-02 09:21:43,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-02 09:21:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:21:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:21:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:21:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:21:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:21:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:21:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:21:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:21:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:21:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:21:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:21:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:21:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:21:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:21:43,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:21:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:21:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:21:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:21:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:21:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 09:21:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:21:43,250 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:21:43,363 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:21:43,365 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:21:43,927 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:21:43,927 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:21:44,168 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:21:44,169 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-02 09:21:44,170 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:21:44 BoogieIcfgContainer [2024-02-02 09:21:44,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:21:44,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:21:44,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:21:44,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:21:44,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:21:42" (1/4) ... [2024-02-02 09:21:44,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa1d3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:21:44, skipping insertion in model container [2024-02-02 09:21:44,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:21:42" (2/4) ... [2024-02-02 09:21:44,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa1d3ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:21:44, skipping insertion in model container [2024-02-02 09:21:44,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (3/4) ... [2024-02-02 09:21:44,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa1d3ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:21:44, skipping insertion in model container [2024-02-02 09:21:44,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:21:44" (4/4) ... [2024-02-02 09:21:44,181 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-02-02 09:21:44,199 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:21:44,200 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-02-02 09:21:44,200 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:21:44,342 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-02 09:21:44,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 93 transitions, 214 flow [2024-02-02 09:21:44,449 INFO L124 PetriNetUnfolderBase]: 4/89 cut-off events. [2024-02-02 09:21:44,450 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-02 09:21:44,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 89 events. 4/89 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 294 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2024-02-02 09:21:44,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 93 transitions, 214 flow [2024-02-02 09:21:44,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 88 transitions, 200 flow [2024-02-02 09:21:44,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:21:44,484 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;@41c61305, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:21:44,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-02-02 09:21:44,487 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:21:44,488 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:21:44,488 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:21:44,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:44,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:21:44,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:21:44,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:44,497 INFO L85 PathProgramCache]: Analyzing trace with hash 15466, now seen corresponding path program 1 times [2024-02-02 09:21:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:44,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394881669] [2024-02-02 09:21:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:44,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:45,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:45,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394881669] [2024-02-02 09:21:45,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394881669] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:45,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:45,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:21:45,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753745788] [2024-02-02 09:21:45,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:45,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:45,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 93 [2024-02-02 09:21:45,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:45,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:45,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 93 [2024-02-02 09:21:45,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:50,901 INFO L124 PetriNetUnfolderBase]: 39901/57860 cut-off events. [2024-02-02 09:21:50,902 INFO L125 PetriNetUnfolderBase]: For 1430/1430 co-relation queries the response was YES. [2024-02-02 09:21:51,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109668 conditions, 57860 events. 39901/57860 cut-off events. For 1430/1430 co-relation queries the response was YES. Maximal size of possible extension queue 2578. Compared 428217 event pairs, 30429 based on Foata normal form. 0/38466 useless extension candidates. Maximal degree in co-relation 99064. Up to 50047 conditions per place. [2024-02-02 09:21:51,575 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 50 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-02-02 09:21:51,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 81 transitions, 290 flow [2024-02-02 09:21:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:21:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:21:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-02-02 09:21:51,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5663082437275986 [2024-02-02 09:21:51,591 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 200 flow. Second operand 3 states and 158 transitions. [2024-02-02 09:21:51,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 81 transitions, 290 flow [2024-02-02 09:21:51,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 81 transitions, 274 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 09:21:51,878 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 174 flow [2024-02-02 09:21:51,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-02-02 09:21:51,884 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -13 predicate places. [2024-02-02 09:21:51,884 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 174 flow [2024-02-02 09:21:51,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:51,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:51,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-02 09:21:51,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:21:51,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:21:51,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash 479885, now seen corresponding path program 1 times [2024-02-02 09:21:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:51,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486536701] [2024-02-02 09:21:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:51,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:51,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:51,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486536701] [2024-02-02 09:21:51,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486536701] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:51,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:51,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:21:51,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673990997] [2024-02-02 09:21:51,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:51,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:51,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2024-02-02 09:21:51,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:51,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:51,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2024-02-02 09:21:51,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:56,412 INFO L124 PetriNetUnfolderBase]: 36258/57688 cut-off events. [2024-02-02 09:21:56,412 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-02-02 09:21:56,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103945 conditions, 57688 events. 36258/57688 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 3123. Compared 510164 event pairs, 13150 based on Foata normal form. 1/45155 useless extension candidates. Maximal degree in co-relation 103936. Up to 23239 conditions per place. [2024-02-02 09:21:56,927 INFO L140 encePairwiseOnDemand]: 86/93 looper letters, 77 selfloop transitions, 3 changer transitions 1/114 dead transitions. [2024-02-02 09:21:56,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 114 transitions, 409 flow [2024-02-02 09:21:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:21:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:21:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-02-02 09:21:56,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7132616487455197 [2024-02-02 09:21:56,930 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 174 flow. Second operand 3 states and 199 transitions. [2024-02-02 09:21:56,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 114 transitions, 409 flow [2024-02-02 09:21:56,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:21:56,934 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 190 flow [2024-02-02 09:21:56,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2024-02-02 09:21:56,935 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -12 predicate places. [2024-02-02 09:21:56,935 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 190 flow [2024-02-02 09:21:56,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:56,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:56,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-02 09:21:56,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:21:56,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:21:56,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash 14876915, now seen corresponding path program 1 times [2024-02-02 09:21:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:56,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124750752] [2024-02-02 09:21:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:56,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:56,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124750752] [2024-02-02 09:21:56,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124750752] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:56,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:56,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:21:56,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461046035] [2024-02-02 09:21:56,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:56,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:56,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:56,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:57,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 93 [2024-02-02 09:21:57,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:57,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:57,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 93 [2024-02-02 09:21:57,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:02,711 INFO L124 PetriNetUnfolderBase]: 43921/73854 cut-off events. [2024-02-02 09:22:02,711 INFO L125 PetriNetUnfolderBase]: For 6862/6862 co-relation queries the response was YES. [2024-02-02 09:22:02,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136127 conditions, 73854 events. 43921/73854 cut-off events. For 6862/6862 co-relation queries the response was YES. Maximal size of possible extension queue 2993. Compared 688722 event pairs, 16055 based on Foata normal form. 453/63464 useless extension candidates. Maximal degree in co-relation 55285. Up to 31326 conditions per place. [2024-02-02 09:22:03,457 INFO L140 encePairwiseOnDemand]: 85/93 looper letters, 73 selfloop transitions, 4 changer transitions 1/111 dead transitions. [2024-02-02 09:22:03,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 417 flow [2024-02-02 09:22:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:22:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:22:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-02-02 09:22:03,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7096774193548387 [2024-02-02 09:22:03,462 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 190 flow. Second operand 3 states and 198 transitions. [2024-02-02 09:22:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 417 flow [2024-02-02 09:22:03,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 111 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:03,541 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 218 flow [2024-02-02 09:22:03,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2024-02-02 09:22:03,542 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -12 predicate places. [2024-02-02 09:22:03,542 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 218 flow [2024-02-02 09:22:03,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:03,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:03,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:03,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:22:03,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:22:03,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:03,543 INFO L85 PathProgramCache]: Analyzing trace with hash -442257399, now seen corresponding path program 1 times [2024-02-02 09:22:03,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:03,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798394806] [2024-02-02 09:22:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:03,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:03,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798394806] [2024-02-02 09:22:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798394806] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:03,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616918895] [2024-02-02 09:22:03,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:03,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:03,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2024-02-02 09:22:03,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:03,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:03,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2024-02-02 09:22:03,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:08,859 INFO L124 PetriNetUnfolderBase]: 43801/67426 cut-off events. [2024-02-02 09:22:08,860 INFO L125 PetriNetUnfolderBase]: For 19770/19770 co-relation queries the response was YES. [2024-02-02 09:22:08,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137830 conditions, 67426 events. 43801/67426 cut-off events. For 19770/19770 co-relation queries the response was YES. Maximal size of possible extension queue 2794. Compared 566906 event pairs, 4527 based on Foata normal form. 2124/65422 useless extension candidates. Maximal degree in co-relation 31958. Up to 53427 conditions per place. [2024-02-02 09:22:09,299 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 73 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-02-02 09:22:09,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 105 transitions, 431 flow [2024-02-02 09:22:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2024-02-02 09:22:09,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2024-02-02 09:22:09,301 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 218 flow. Second operand 4 states and 225 transitions. [2024-02-02 09:22:09,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 105 transitions, 431 flow [2024-02-02 09:22:09,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 105 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:09,350 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 208 flow [2024-02-02 09:22:09,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-02-02 09:22:09,352 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -14 predicate places. [2024-02-02 09:22:09,352 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 208 flow [2024-02-02 09:22:09,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:09,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:09,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:09,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:22:09,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:22:09,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 189919650, now seen corresponding path program 1 times [2024-02-02 09:22:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:09,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299083856] [2024-02-02 09:22:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:09,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:09,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299083856] [2024-02-02 09:22:09,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299083856] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:09,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:09,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984043496] [2024-02-02 09:22:09,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:09,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:09,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:09,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:09,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2024-02-02 09:22:09,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:09,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:09,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2024-02-02 09:22:09,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand