/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix046.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 11:55:01,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:55:01,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:55:01,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:55:01,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:55:01,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:55:01,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:55:01,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:55:01,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:55:01,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:55:01,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:55:01,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:55:01,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:55:01,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:55:01,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:55:01,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:55:01,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:55:01,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:55:01,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:55:01,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:55:01,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:55:01,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:55:01,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:55:01,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:55:01,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:55:01,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:55:01,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:55:01,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:55:01,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:55:01,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:55:01,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:55:01,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:55:01,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:55:01,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:55:01,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:55:01,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:55:01,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:55:01,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:55:01,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:55:01,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:55:01,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:55:01,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-13 11:55:01,490 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:55:01,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:55:01,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:55:01,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:55:01,492 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:55:01,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:55:01,493 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:55:01,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:55:01,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:55:01,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:55:01,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:55:01,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:55:01,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:55:01,495 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:55:01,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:55:01,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:55:01,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:55:01,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:55:01,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:55:01,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 11:55:01,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:55:01,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:55:01,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:55:01,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:55:01,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:55:01,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:55:01,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:55:01,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 11:55:01,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 11:55:01,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:55:01,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:55:01,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:55:01,832 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:55:01,833 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:55:01,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix046.opt.i [2022-12-13 11:55:03,007 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:55:03,244 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:55:03,244 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.opt.i [2022-12-13 11:55:03,263 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d047f762/4778e940da0f44ed9c35929a2575392f/FLAG3919aa467 [2022-12-13 11:55:03,274 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d047f762/4778e940da0f44ed9c35929a2575392f [2022-12-13 11:55:03,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:55:03,278 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 11:55:03,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:55:03,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:55:03,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:55:03,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2785e41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03, skipping insertion in model container [2022-12-13 11:55:03,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:55:03,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:55:03,452 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.opt.i[944,957] [2022-12-13 11:55:03,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,617 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,618 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,621 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:55:03,676 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:55:03,688 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.opt.i[944,957] [2022-12-13 11:55:03,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,728 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,728 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:03,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:03,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:55:03,773 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:55:03,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03 WrapperNode [2022-12-13 11:55:03,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:55:03,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:55:03,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:55:03,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:55:03,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,841 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2022-12-13 11:55:03,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:55:03,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:55:03,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:55:03,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:55:03,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,882 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:55:03,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:55:03,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:55:03,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:55:03,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (1/1) ... [2022-12-13 11:55:03,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:55:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:55:03,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:55:03,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:55:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:55:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:55:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:55:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:55:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:55:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 11:55:03,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 11:55:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 11:55:03,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 11:55:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 11:55:03,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 11:55:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 11:55:03,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 11:55:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:55:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:55:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:55:03,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:55:03,964 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 11:55:04,113 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 11:55:04,115 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:55:04,402 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 11:55:04,543 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:55:04,544 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:55:04,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:55:04 BoogieIcfgContainer [2022-12-13 11:55:04,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:55:04,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:55:04,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:55:04,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:55:04,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:55:03" (1/3) ... [2022-12-13 11:55:04,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1845a2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:55:04, skipping insertion in model container [2022-12-13 11:55:04,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:03" (2/3) ... [2022-12-13 11:55:04,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1845a2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:55:04, skipping insertion in model container [2022-12-13 11:55:04,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:55:04" (3/3) ... [2022-12-13 11:55:04,556 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2022-12-13 11:55:04,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:55:04,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:55:04,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:55:04,643 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:55:04,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 11:55:04,767 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 11:55:04,768 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:04,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 11:55:04,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 11:55:04,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 126 transitions, 264 flow [2022-12-13 11:55:04,786 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:04,805 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 11:55:04,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 126 transitions, 264 flow [2022-12-13 11:55:04,835 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 11:55:04,835 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:04,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 11:55:04,839 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 11:55:04,839 INFO L226 LiptonReduction]: Number of co-enabled transitions 2936 [2022-12-13 11:55:14,908 INFO L241 LiptonReduction]: Total number of compositions: 102 [2022-12-13 11:55:14,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:55:14,927 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=REPEATED_LIPTON_PN, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1647c6cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 11:55:14,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 11:55:14,934 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-12-13 11:55:14,934 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:14,934 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:14,935 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:14,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:14,939 INFO L85 PathProgramCache]: Analyzing trace with hash -564451010, now seen corresponding path program 1 times [2022-12-13 11:55:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:14,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580616440] [2022-12-13 11:55:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:15,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:15,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580616440] [2022-12-13 11:55:15,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580616440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:15,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:15,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:55:15,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593410015] [2022-12-13 11:55:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:15,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:15,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:15,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:15,532 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 66 [2022-12-13 11:55:15,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-12-13 11:55:15,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:15,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 66 [2022-12-13 11:55:15,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:22,943 INFO L130 PetriNetUnfolder]: 49367/69927 cut-off events. [2022-12-13 11:55:22,944 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2022-12-13 11:55:23,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135383 conditions, 69927 events. 49367/69927 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 4112. Compared 535437 event pairs, 5495 based on Foata normal form. 0/40880 useless extension candidates. Maximal degree in co-relation 135371. Up to 57313 conditions per place. [2022-12-13 11:55:23,211 INFO L137 encePairwiseOnDemand]: 61/66 looper letters, 37 selfloop transitions, 3 changer transitions 48/101 dead transitions. [2022-12-13 11:55:23,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 101 transitions, 390 flow [2022-12-13 11:55:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2022-12-13 11:55:23,223 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2022-12-13 11:55:23,224 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 144 flow. Second operand 3 states and 130 transitions. [2022-12-13 11:55:23,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 101 transitions, 390 flow [2022-12-13 11:55:23,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 386 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:55:23,231 INFO L231 Difference]: Finished difference. Result has 75 places, 40 transitions, 94 flow [2022-12-13 11:55:23,233 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=75, PETRI_TRANSITIONS=40} [2022-12-13 11:55:23,236 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -4 predicate places. [2022-12-13 11:55:23,237 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:23,237 INFO L89 Accepts]: Start accepts. Operand has 75 places, 40 transitions, 94 flow [2022-12-13 11:55:23,242 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:23,242 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:23,243 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 40 transitions, 94 flow [2022-12-13 11:55:23,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 40 transitions, 94 flow [2022-12-13 11:55:23,254 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2022-12-13 11:55:23,254 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:23,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-13 11:55:23,259 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 40 transitions, 94 flow [2022-12-13 11:55:23,259 INFO L226 LiptonReduction]: Number of co-enabled transitions 954 [2022-12-13 11:55:23,557 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:55:23,559 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 322 [2022-12-13 11:55:23,559 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 92 flow [2022-12-13 11:55:23,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-12-13 11:55:23,560 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:23,560 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:23,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:55:23,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:23,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1271480904, now seen corresponding path program 1 times [2022-12-13 11:55:23,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:23,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177554439] [2022-12-13 11:55:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:23,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:24,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:24,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177554439] [2022-12-13 11:55:24,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177554439] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:24,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:24,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666049500] [2022-12-13 11:55:24,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:24,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:24,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:24,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:24,073 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 11:55:24,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-13 11:55:24,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:24,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 11:55:24,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:25,997 INFO L130 PetriNetUnfolder]: 17239/24631 cut-off events. [2022-12-13 11:55:25,997 INFO L131 PetriNetUnfolder]: For 400/400 co-relation queries the response was YES. [2022-12-13 11:55:26,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49197 conditions, 24631 events. 17239/24631 cut-off events. For 400/400 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 147607 event pairs, 3759 based on Foata normal form. 750/20309 useless extension candidates. Maximal degree in co-relation 49187. Up to 13931 conditions per place. [2022-12-13 11:55:26,147 INFO L137 encePairwiseOnDemand]: 29/39 looper letters, 52 selfloop transitions, 9 changer transitions 1/71 dead transitions. [2022-12-13 11:55:26,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 280 flow [2022-12-13 11:55:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2022-12-13 11:55:26,150 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2022-12-13 11:55:26,150 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 92 flow. Second operand 4 states and 100 transitions. [2022-12-13 11:55:26,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 280 flow [2022-12-13 11:55:26,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:55:26,169 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 152 flow [2022-12-13 11:55:26,169 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2022-12-13 11:55:26,170 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -25 predicate places. [2022-12-13 11:55:26,170 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:26,170 INFO L89 Accepts]: Start accepts. Operand has 54 places, 45 transitions, 152 flow [2022-12-13 11:55:26,171 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:26,172 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:26,172 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 45 transitions, 152 flow [2022-12-13 11:55:26,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 45 transitions, 152 flow [2022-12-13 11:55:26,245 INFO L130 PetriNetUnfolder]: 295/757 cut-off events. [2022-12-13 11:55:26,246 INFO L131 PetriNetUnfolder]: For 91/102 co-relation queries the response was YES. [2022-12-13 11:55:26,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 757 events. 295/757 cut-off events. For 91/102 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5360 event pairs, 164 based on Foata normal form. 0/543 useless extension candidates. Maximal degree in co-relation 1434. Up to 402 conditions per place. [2022-12-13 11:55:26,256 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 45 transitions, 152 flow [2022-12-13 11:55:26,256 INFO L226 LiptonReduction]: Number of co-enabled transitions 1008 [2022-12-13 11:55:26,271 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:26,272 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 102 [2022-12-13 11:55:26,273 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 152 flow [2022-12-13 11:55:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-13 11:55:26,276 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:26,281 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:26,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:55:26,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:26,283 INFO L85 PathProgramCache]: Analyzing trace with hash -761201036, now seen corresponding path program 1 times [2022-12-13 11:55:26,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:26,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853013999] [2022-12-13 11:55:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:26,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:26,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:26,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853013999] [2022-12-13 11:55:26,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853013999] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:26,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:26,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:26,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010071530] [2022-12-13 11:55:26,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:26,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:26,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:26,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:26,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:26,675 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2022-12-13 11:55:26,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-13 11:55:26,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:26,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2022-12-13 11:55:26,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:28,309 INFO L130 PetriNetUnfolder]: 16657/23951 cut-off events. [2022-12-13 11:55:28,310 INFO L131 PetriNetUnfolder]: For 10672/10672 co-relation queries the response was YES. [2022-12-13 11:55:28,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59559 conditions, 23951 events. 16657/23951 cut-off events. For 10672/10672 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 146873 event pairs, 2145 based on Foata normal form. 50/19390 useless extension candidates. Maximal degree in co-relation 59546. Up to 15879 conditions per place. [2022-12-13 11:55:28,480 INFO L137 encePairwiseOnDemand]: 28/38 looper letters, 58 selfloop transitions, 17 changer transitions 0/84 dead transitions. [2022-12-13 11:55:28,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 420 flow [2022-12-13 11:55:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:28,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2022-12-13 11:55:28,484 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6973684210526315 [2022-12-13 11:55:28,485 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 152 flow. Second operand 4 states and 106 transitions. [2022-12-13 11:55:28,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 420 flow [2022-12-13 11:55:28,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:28,497 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 250 flow [2022-12-13 11:55:28,498 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2022-12-13 11:55:28,499 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -22 predicate places. [2022-12-13 11:55:28,499 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:28,499 INFO L89 Accepts]: Start accepts. Operand has 57 places, 53 transitions, 250 flow [2022-12-13 11:55:28,501 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:28,501 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:28,501 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 53 transitions, 250 flow [2022-12-13 11:55:28,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 250 flow [2022-12-13 11:55:28,566 INFO L130 PetriNetUnfolder]: 329/857 cut-off events. [2022-12-13 11:55:28,567 INFO L131 PetriNetUnfolder]: For 585/644 co-relation queries the response was YES. [2022-12-13 11:55:28,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2208 conditions, 857 events. 329/857 cut-off events. For 585/644 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6147 event pairs, 155 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 2195. Up to 421 conditions per place. [2022-12-13 11:55:28,578 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 53 transitions, 250 flow [2022-12-13 11:55:28,579 INFO L226 LiptonReduction]: Number of co-enabled transitions 1202 [2022-12-13 11:55:28,607 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:28,608 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 109 [2022-12-13 11:55:28,608 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 250 flow [2022-12-13 11:55:28,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-13 11:55:28,609 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:28,609 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:28,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:55:28,609 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:28,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2120409351, now seen corresponding path program 1 times [2022-12-13 11:55:28,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:28,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296536630] [2022-12-13 11:55:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:28,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:29,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:29,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296536630] [2022-12-13 11:55:29,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296536630] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:29,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:29,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:55:29,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905980673] [2022-12-13 11:55:29,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:29,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:55:29,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:55:29,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:55:29,508 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2022-12-13 11:55:29,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2022-12-13 11:55:29,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:29,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2022-12-13 11:55:29,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:30,853 INFO L130 PetriNetUnfolder]: 13285/19907 cut-off events. [2022-12-13 11:55:30,854 INFO L131 PetriNetUnfolder]: For 18883/19330 co-relation queries the response was YES. [2022-12-13 11:55:30,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56184 conditions, 19907 events. 13285/19907 cut-off events. For 18883/19330 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 132785 event pairs, 3868 based on Foata normal form. 220/15951 useless extension candidates. Maximal degree in co-relation 56168. Up to 15067 conditions per place. [2022-12-13 11:55:31,052 INFO L137 encePairwiseOnDemand]: 33/38 looper letters, 59 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2022-12-13 11:55:31,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 511 flow [2022-12-13 11:55:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2022-12-13 11:55:31,055 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6513157894736842 [2022-12-13 11:55:31,056 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 250 flow. Second operand 4 states and 99 transitions. [2022-12-13 11:55:31,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 511 flow [2022-12-13 11:55:31,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:55:31,071 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 317 flow [2022-12-13 11:55:31,071 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2022-12-13 11:55:31,072 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -17 predicate places. [2022-12-13 11:55:31,073 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:31,073 INFO L89 Accepts]: Start accepts. Operand has 62 places, 59 transitions, 317 flow [2022-12-13 11:55:31,074 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:31,074 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:31,074 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 59 transitions, 317 flow [2022-12-13 11:55:31,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 317 flow [2022-12-13 11:55:31,175 INFO L130 PetriNetUnfolder]: 360/979 cut-off events. [2022-12-13 11:55:31,175 INFO L131 PetriNetUnfolder]: For 858/940 co-relation queries the response was YES. [2022-12-13 11:55:31,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 979 events. 360/979 cut-off events. For 858/940 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7496 event pairs, 169 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 2657. Up to 441 conditions per place. [2022-12-13 11:55:31,190 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 59 transitions, 317 flow [2022-12-13 11:55:31,190 INFO L226 LiptonReduction]: Number of co-enabled transitions 1344 [2022-12-13 11:55:31,195 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:31,205 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 132 [2022-12-13 11:55:31,205 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 317 flow [2022-12-13 11:55:31,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2022-12-13 11:55:31,205 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:31,205 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:31,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:55:31,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:31,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash -355660029, now seen corresponding path program 1 times [2022-12-13 11:55:31,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:31,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758562916] [2022-12-13 11:55:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:31,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:31,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:31,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758562916] [2022-12-13 11:55:31,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758562916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:31,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:31,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:55:31,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9980093] [2022-12-13 11:55:31,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:31,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:55:31,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:55:31,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:55:31,633 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2022-12-13 11:55:31,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-12-13 11:55:31,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:31,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2022-12-13 11:55:31,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:33,365 INFO L130 PetriNetUnfolder]: 13964/20889 cut-off events. [2022-12-13 11:55:33,365 INFO L131 PetriNetUnfolder]: For 26728/27400 co-relation queries the response was YES. [2022-12-13 11:55:33,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63487 conditions, 20889 events. 13964/20889 cut-off events. For 26728/27400 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 139710 event pairs, 3174 based on Foata normal form. 202/16761 useless extension candidates. Maximal degree in co-relation 63467. Up to 14256 conditions per place. [2022-12-13 11:55:33,503 INFO L137 encePairwiseOnDemand]: 31/38 looper letters, 64 selfloop transitions, 18 changer transitions 0/100 dead transitions. [2022-12-13 11:55:33,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 650 flow [2022-12-13 11:55:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:55:33,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:55:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2022-12-13 11:55:33,505 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6421052631578947 [2022-12-13 11:55:33,505 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 317 flow. Second operand 5 states and 122 transitions. [2022-12-13 11:55:33,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 650 flow [2022-12-13 11:55:33,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 100 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:55:33,538 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 482 flow [2022-12-13 11:55:33,538 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2022-12-13 11:55:33,538 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -11 predicate places. [2022-12-13 11:55:33,539 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:33,539 INFO L89 Accepts]: Start accepts. Operand has 68 places, 71 transitions, 482 flow [2022-12-13 11:55:33,539 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:33,540 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:33,540 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 71 transitions, 482 flow [2022-12-13 11:55:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 71 transitions, 482 flow [2022-12-13 11:55:33,632 INFO L130 PetriNetUnfolder]: 435/1126 cut-off events. [2022-12-13 11:55:33,632 INFO L131 PetriNetUnfolder]: For 1629/1768 co-relation queries the response was YES. [2022-12-13 11:55:33,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3614 conditions, 1126 events. 435/1126 cut-off events. For 1629/1768 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8654 event pairs, 158 based on Foata normal form. 15/831 useless extension candidates. Maximal degree in co-relation 3593. Up to 529 conditions per place. [2022-12-13 11:55:33,650 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 71 transitions, 482 flow [2022-12-13 11:55:33,650 INFO L226 LiptonReduction]: Number of co-enabled transitions 1592 [2022-12-13 11:55:33,839 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [372] L783-->L786: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [544] $Ultimate##0-->L819: Formula: (and (= v_~z$r_buff0_thd2~0_55 v_~z$r_buff1_thd2~0_55) (= |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37| |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37|) (= v_~z$w_buff0~0_403 v_~z$w_buff1~0_385) (= v_~z$r_buff0_thd4~0_161 v_~z$r_buff1_thd4~0_127) (= |v_P3Thread1of1ForFork2_~arg#1.base_31| |v_P3Thread1of1ForFork2_#in~arg#1.base_31|) (= v_~a~0_47 v_~__unbuffered_p3_EAX~0_149) (not (= |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37| 0)) (= |v_P3Thread1of1ForFork2_~arg#1.offset_31| |v_P3Thread1of1ForFork2_#in~arg#1.offset_31|) (= v_~z$r_buff0_thd1~0_51 v_~z$r_buff1_thd1~0_57) (= v_~z$w_buff0_used~0_519 1) (= v_~a~0_47 1) (= v_~z$r_buff0_thd0~0_372 v_~z$r_buff1_thd0~0_381) (= v_~z$w_buff0_used~0_520 v_~z$w_buff1_used~0_480) (= v_~z$r_buff0_thd4~0_160 1) (= v_~z$w_buff0~0_402 2) (= v_~z$r_buff0_thd3~0_102 v_~z$r_buff1_thd3~0_97) (= (ite (not (and (not (= (mod v_~z$w_buff1_used~0_480 256) 0)) (not (= (mod v_~z$w_buff0_used~0_519 256) 0)))) 1 0) |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37|)) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_372, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_520, ~z$w_buff0~0=v_~z$w_buff0~0_403, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_31|, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_31|, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_161, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_102, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_51, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_55} OutVars{~z$r_buff1_thd4~0=v_~z$r_buff1_thd4~0_127, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_519, ~z$w_buff0~0=v_~z$w_buff0~0_402, ~z$r_buff1_thd3~0=v_~z$r_buff1_thd3~0_97, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_31|, ~z$r_buff1_thd2~0=v_~z$r_buff1_thd2~0_55, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_480, ~z$w_buff1~0=v_~z$w_buff1~0_385, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37|, ~a~0=v_~a~0_47, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37|, ~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_372, P3Thread1of1ForFork2_~arg#1.offset=|v_P3Thread1of1ForFork2_~arg#1.offset_31|, P3Thread1of1ForFork2_~arg#1.base=|v_P3Thread1of1ForFork2_~arg#1.base_31|, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_381, ~z$r_buff1_thd1~0=v_~z$r_buff1_thd1~0_57, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_31|, ~__unbuffered_p3_EAX~0=v_~__unbuffered_p3_EAX~0_149, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_160, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_102, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_51, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_55} AuxVars[] AssignedVars[~z$r_buff1_thd4~0, ~z$w_buff0_used~0, ~z$w_buff0~0, ~z$r_buff1_thd3~0, ~z$r_buff1_thd2~0, ~z$w_buff1_used~0, ~z$w_buff1~0, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1, ~a~0, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1, P3Thread1of1ForFork2_~arg#1.offset, P3Thread1of1ForFork2_~arg#1.base, ~z$r_buff1_thd0~0, ~z$r_buff1_thd1~0, ~__unbuffered_p3_EAX~0, ~z$r_buff0_thd4~0] [2022-12-13 11:55:33,962 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [372] L783-->L786: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [475] L2-1-->L864: Formula: (let ((.cse3 (not (= (mod v_~z$w_buff0_used~0_191 256) 0))) (.cse4 (not (= (mod v_~z$r_buff1_thd0~0_104 256) 0))) (.cse5 (not (= (mod v_~z$r_buff0_thd0~0_100 256) 0)))) (let ((.cse0 (and .cse5 (not (= (mod v_~z$w_buff0_used~0_192 256) 0)))) (.cse1 (and (not (= (mod v_~z$w_buff1_used~0_172 256) 0)) .cse4)) (.cse2 (and .cse5 .cse3))) (and (= v_~z$w_buff0_used~0_191 (ite .cse0 0 v_~z$w_buff0_used~0_192)) (= v_~z~0_131 (ite .cse0 v_~z$w_buff0~0_110 (ite .cse1 v_~z$w_buff1~0_110 v_~z~0_132))) (= v_~z$w_buff1_used~0_171 (ite (or .cse1 .cse2) 0 v_~z$w_buff1_used~0_172)) (= v_~z$r_buff1_thd0~0_103 (ite (or (and .cse3 (not (= (mod v_~z$r_buff0_thd0~0_99 256) 0))) (and (not (= (mod v_~z$w_buff1_used~0_171 256) 0)) .cse4)) 0 v_~z$r_buff1_thd0~0_104)) (= v_~z$r_buff0_thd0~0_99 (ite .cse2 0 v_~z$r_buff0_thd0~0_100))))) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_100, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_192, ~z$w_buff0~0=v_~z$w_buff0~0_110, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_104, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_172, ~z$w_buff1~0=v_~z$w_buff1~0_110, ~z~0=v_~z~0_132} OutVars{~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_99, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_191, ~z$w_buff0~0=v_~z$w_buff0~0_110, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_103, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_171, ~z$w_buff1~0=v_~z$w_buff1~0_110, ~z~0=v_~z~0_131} AuxVars[] AssignedVars[~z$r_buff0_thd0~0, ~z$w_buff0_used~0, ~z$r_buff1_thd0~0, ~z$w_buff1_used~0, ~z~0] [2022-12-13 11:55:34,101 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [372] L783-->L786: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [475] L2-1-->L864: Formula: (let ((.cse3 (not (= (mod v_~z$w_buff0_used~0_191 256) 0))) (.cse4 (not (= (mod v_~z$r_buff1_thd0~0_104 256) 0))) (.cse5 (not (= (mod v_~z$r_buff0_thd0~0_100 256) 0)))) (let ((.cse0 (and .cse5 (not (= (mod v_~z$w_buff0_used~0_192 256) 0)))) (.cse1 (and (not (= (mod v_~z$w_buff1_used~0_172 256) 0)) .cse4)) (.cse2 (and .cse5 .cse3))) (and (= v_~z$w_buff0_used~0_191 (ite .cse0 0 v_~z$w_buff0_used~0_192)) (= v_~z~0_131 (ite .cse0 v_~z$w_buff0~0_110 (ite .cse1 v_~z$w_buff1~0_110 v_~z~0_132))) (= v_~z$w_buff1_used~0_171 (ite (or .cse1 .cse2) 0 v_~z$w_buff1_used~0_172)) (= v_~z$r_buff1_thd0~0_103 (ite (or (and .cse3 (not (= (mod v_~z$r_buff0_thd0~0_99 256) 0))) (and (not (= (mod v_~z$w_buff1_used~0_171 256) 0)) .cse4)) 0 v_~z$r_buff1_thd0~0_104)) (= v_~z$r_buff0_thd0~0_99 (ite .cse2 0 v_~z$r_buff0_thd0~0_100))))) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_100, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_192, ~z$w_buff0~0=v_~z$w_buff0~0_110, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_104, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_172, ~z$w_buff1~0=v_~z$w_buff1~0_110, ~z~0=v_~z~0_132} OutVars{~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_99, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_191, ~z$w_buff0~0=v_~z$w_buff0~0_110, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_103, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_171, ~z$w_buff1~0=v_~z$w_buff1~0_110, ~z~0=v_~z~0_131} AuxVars[] AssignedVars[~z$r_buff0_thd0~0, ~z$w_buff0_used~0, ~z$r_buff1_thd0~0, ~z$w_buff1_used~0, ~z~0] [2022-12-13 11:55:34,167 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [372] L783-->L786: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [544] $Ultimate##0-->L819: Formula: (and (= v_~z$r_buff0_thd2~0_55 v_~z$r_buff1_thd2~0_55) (= |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37| |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37|) (= v_~z$w_buff0~0_403 v_~z$w_buff1~0_385) (= v_~z$r_buff0_thd4~0_161 v_~z$r_buff1_thd4~0_127) (= |v_P3Thread1of1ForFork2_~arg#1.base_31| |v_P3Thread1of1ForFork2_#in~arg#1.base_31|) (= v_~a~0_47 v_~__unbuffered_p3_EAX~0_149) (not (= |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37| 0)) (= |v_P3Thread1of1ForFork2_~arg#1.offset_31| |v_P3Thread1of1ForFork2_#in~arg#1.offset_31|) (= v_~z$r_buff0_thd1~0_51 v_~z$r_buff1_thd1~0_57) (= v_~z$w_buff0_used~0_519 1) (= v_~a~0_47 1) (= v_~z$r_buff0_thd0~0_372 v_~z$r_buff1_thd0~0_381) (= v_~z$w_buff0_used~0_520 v_~z$w_buff1_used~0_480) (= v_~z$r_buff0_thd4~0_160 1) (= v_~z$w_buff0~0_402 2) (= v_~z$r_buff0_thd3~0_102 v_~z$r_buff1_thd3~0_97) (= (ite (not (and (not (= (mod v_~z$w_buff1_used~0_480 256) 0)) (not (= (mod v_~z$w_buff0_used~0_519 256) 0)))) 1 0) |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37|)) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_372, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_520, ~z$w_buff0~0=v_~z$w_buff0~0_403, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_31|, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_31|, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_161, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_102, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_51, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_55} OutVars{~z$r_buff1_thd4~0=v_~z$r_buff1_thd4~0_127, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_519, ~z$w_buff0~0=v_~z$w_buff0~0_402, ~z$r_buff1_thd3~0=v_~z$r_buff1_thd3~0_97, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_31|, ~z$r_buff1_thd2~0=v_~z$r_buff1_thd2~0_55, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_480, ~z$w_buff1~0=v_~z$w_buff1~0_385, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37|, ~a~0=v_~a~0_47, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37|, ~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_372, P3Thread1of1ForFork2_~arg#1.offset=|v_P3Thread1of1ForFork2_~arg#1.offset_31|, P3Thread1of1ForFork2_~arg#1.base=|v_P3Thread1of1ForFork2_~arg#1.base_31|, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_381, ~z$r_buff1_thd1~0=v_~z$r_buff1_thd1~0_57, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_31|, ~__unbuffered_p3_EAX~0=v_~__unbuffered_p3_EAX~0_149, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_160, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_102, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_51, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_55} AuxVars[] AssignedVars[~z$r_buff1_thd4~0, ~z$w_buff0_used~0, ~z$w_buff0~0, ~z$r_buff1_thd3~0, ~z$r_buff1_thd2~0, ~z$w_buff1_used~0, ~z$w_buff1~0, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1, ~a~0, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1, P3Thread1of1ForFork2_~arg#1.offset, P3Thread1of1ForFork2_~arg#1.base, ~z$r_buff1_thd0~0, ~z$r_buff1_thd1~0, ~__unbuffered_p3_EAX~0, ~z$r_buff0_thd4~0] [2022-12-13 11:55:34,300 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:55:34,303 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 764 [2022-12-13 11:55:34,303 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 502 flow [2022-12-13 11:55:34,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-12-13 11:55:34,303 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:34,303 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:34,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:55:34,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash -149945011, now seen corresponding path program 1 times [2022-12-13 11:55:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99170118] [2022-12-13 11:55:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:34,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:34,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:34,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99170118] [2022-12-13 11:55:34,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99170118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:34,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:34,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:55:34,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435058209] [2022-12-13 11:55:34,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:34,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:55:34,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:34,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:55:34,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:55:34,991 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2022-12-13 11:55:34,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 502 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2022-12-13 11:55:34,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:34,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2022-12-13 11:55:34,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:36,822 INFO L130 PetriNetUnfolder]: 13750/20581 cut-off events. [2022-12-13 11:55:36,822 INFO L131 PetriNetUnfolder]: For 50540/51093 co-relation queries the response was YES. [2022-12-13 11:55:36,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70950 conditions, 20581 events. 13750/20581 cut-off events. For 50540/51093 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 137030 event pairs, 3107 based on Foata normal form. 180/16579 useless extension candidates. Maximal degree in co-relation 70926. Up to 14283 conditions per place. [2022-12-13 11:55:37,024 INFO L137 encePairwiseOnDemand]: 37/44 looper letters, 61 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2022-12-13 11:55:37,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 761 flow [2022-12-13 11:55:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2022-12-13 11:55:37,026 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2022-12-13 11:55:37,026 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 502 flow. Second operand 4 states and 103 transitions. [2022-12-13 11:55:37,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 761 flow [2022-12-13 11:55:37,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 712 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-12-13 11:55:37,142 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 549 flow [2022-12-13 11:55:37,142 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=549, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2022-12-13 11:55:37,143 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -10 predicate places. [2022-12-13 11:55:37,143 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:37,143 INFO L89 Accepts]: Start accepts. Operand has 69 places, 74 transitions, 549 flow [2022-12-13 11:55:37,144 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:37,144 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:37,144 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 74 transitions, 549 flow [2022-12-13 11:55:37,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 74 transitions, 549 flow [2022-12-13 11:55:37,236 INFO L130 PetriNetUnfolder]: 457/1142 cut-off events. [2022-12-13 11:55:37,236 INFO L131 PetriNetUnfolder]: For 2313/2448 co-relation queries the response was YES. [2022-12-13 11:55:37,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 1142 events. 457/1142 cut-off events. For 2313/2448 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8721 event pairs, 154 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 3803. Up to 559 conditions per place. [2022-12-13 11:55:37,248 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 74 transitions, 549 flow [2022-12-13 11:55:37,248 INFO L226 LiptonReduction]: Number of co-enabled transitions 1628 [2022-12-13 11:55:37,254 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:37,254 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 111 [2022-12-13 11:55:37,255 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 549 flow [2022-12-13 11:55:37,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2022-12-13 11:55:37,255 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:37,255 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:37,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:55:37,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash -149945755, now seen corresponding path program 1 times [2022-12-13 11:55:37,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:37,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835010371] [2022-12-13 11:55:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:37,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:37,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:37,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835010371] [2022-12-13 11:55:37,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835010371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:37,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:37,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:55:37,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138098335] [2022-12-13 11:55:37,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:37,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:55:37,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:37,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:55:37,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:55:37,805 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2022-12-13 11:55:37,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 549 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2022-12-13 11:55:37,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:37,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2022-12-13 11:55:37,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:39,705 INFO L130 PetriNetUnfolder]: 14847/22014 cut-off events. [2022-12-13 11:55:39,706 INFO L131 PetriNetUnfolder]: For 64362/65035 co-relation queries the response was YES. [2022-12-13 11:55:39,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76901 conditions, 22014 events. 14847/22014 cut-off events. For 64362/65035 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 147033 event pairs, 9264 based on Foata normal form. 470/17879 useless extension candidates. Maximal degree in co-relation 76876. Up to 16527 conditions per place. [2022-12-13 11:55:39,863 INFO L137 encePairwiseOnDemand]: 34/44 looper letters, 58 selfloop transitions, 26 changer transitions 0/102 dead transitions. [2022-12-13 11:55:39,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 102 transitions, 889 flow [2022-12-13 11:55:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:55:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:55:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2022-12-13 11:55:39,864 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2022-12-13 11:55:39,864 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 549 flow. Second operand 5 states and 117 transitions. [2022-12-13 11:55:39,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 102 transitions, 889 flow [2022-12-13 11:55:39,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 852 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 11:55:39,980 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 728 flow [2022-12-13 11:55:39,981 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=728, PETRI_PLACES=72, PETRI_TRANSITIONS=84} [2022-12-13 11:55:39,981 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -7 predicate places. [2022-12-13 11:55:39,981 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:39,981 INFO L89 Accepts]: Start accepts. Operand has 72 places, 84 transitions, 728 flow [2022-12-13 11:55:39,983 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:39,983 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:39,983 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 84 transitions, 728 flow [2022-12-13 11:55:39,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 84 transitions, 728 flow [2022-12-13 11:55:40,067 INFO L130 PetriNetUnfolder]: 449/1128 cut-off events. [2022-12-13 11:55:40,068 INFO L131 PetriNetUnfolder]: For 2794/2956 co-relation queries the response was YES. [2022-12-13 11:55:40,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4124 conditions, 1128 events. 449/1128 cut-off events. For 2794/2956 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8577 event pairs, 146 based on Foata normal form. 27/859 useless extension candidates. Maximal degree in co-relation 4101. Up to 557 conditions per place. [2022-12-13 11:55:40,077 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 84 transitions, 728 flow [2022-12-13 11:55:40,077 INFO L226 LiptonReduction]: Number of co-enabled transitions 1834 [2022-12-13 11:55:40,948 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:55:40,949 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 968 [2022-12-13 11:55:40,949 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 740 flow [2022-12-13 11:55:40,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2022-12-13 11:55:40,949 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:40,949 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:40,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:55:40,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:40,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:40,950 INFO L85 PathProgramCache]: Analyzing trace with hash -310188179, now seen corresponding path program 1 times [2022-12-13 11:55:40,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:40,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476231651] [2022-12-13 11:55:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:40,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:41,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:41,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476231651] [2022-12-13 11:55:41,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476231651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:41,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:41,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:55:41,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546750353] [2022-12-13 11:55:41,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:41,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:55:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:55:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:55:41,443 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2022-12-13 11:55:41,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 740 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2022-12-13 11:55:41,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:41,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2022-12-13 11:55:41,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:43,369 INFO L130 PetriNetUnfolder]: 16501/24606 cut-off events. [2022-12-13 11:55:43,370 INFO L131 PetriNetUnfolder]: For 82158/82981 co-relation queries the response was YES. [2022-12-13 11:55:43,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90465 conditions, 24606 events. 16501/24606 cut-off events. For 82158/82981 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 168954 event pairs, 2720 based on Foata normal form. 410/19885 useless extension candidates. Maximal degree in co-relation 90439. Up to 16615 conditions per place. [2022-12-13 11:55:43,538 INFO L137 encePairwiseOnDemand]: 33/45 looper letters, 76 selfloop transitions, 26 changer transitions 0/120 dead transitions. [2022-12-13 11:55:43,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 120 transitions, 1074 flow [2022-12-13 11:55:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:55:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:55:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2022-12-13 11:55:43,540 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5688888888888889 [2022-12-13 11:55:43,540 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 740 flow. Second operand 5 states and 128 transitions. [2022-12-13 11:55:43,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 120 transitions, 1074 flow [2022-12-13 11:55:43,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 120 transitions, 1051 flow, removed 11 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:43,839 INFO L231 Difference]: Finished difference. Result has 76 places, 87 transitions, 825 flow [2022-12-13 11:55:43,840 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=825, PETRI_PLACES=76, PETRI_TRANSITIONS=87} [2022-12-13 11:55:43,840 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -3 predicate places. [2022-12-13 11:55:43,840 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:43,840 INFO L89 Accepts]: Start accepts. Operand has 76 places, 87 transitions, 825 flow [2022-12-13 11:55:43,841 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:43,841 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:43,842 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 87 transitions, 825 flow [2022-12-13 11:55:43,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 87 transitions, 825 flow [2022-12-13 11:55:44,094 INFO L130 PetriNetUnfolder]: 477/1228 cut-off events. [2022-12-13 11:55:44,095 INFO L131 PetriNetUnfolder]: For 3578/3748 co-relation queries the response was YES. [2022-12-13 11:55:44,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 1228 events. 477/1228 cut-off events. For 3578/3748 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9718 event pairs, 150 based on Foata normal form. 27/926 useless extension candidates. Maximal degree in co-relation 4644. Up to 601 conditions per place. [2022-12-13 11:55:44,105 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 87 transitions, 825 flow [2022-12-13 11:55:44,105 INFO L226 LiptonReduction]: Number of co-enabled transitions 1922 [2022-12-13 11:55:44,745 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:55:44,748 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 908 [2022-12-13 11:55:44,748 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 87 transitions, 837 flow [2022-12-13 11:55:44,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2022-12-13 11:55:44,749 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:44,749 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:44,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:55:44,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:44,749 INFO L85 PathProgramCache]: Analyzing trace with hash -353322133, now seen corresponding path program 2 times [2022-12-13 11:55:44,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:44,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497715360] [2022-12-13 11:55:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:44,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:45,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497715360] [2022-12-13 11:55:45,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497715360] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:45,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:45,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:55:45,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777616249] [2022-12-13 11:55:45,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:45,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:55:45,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:45,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:55:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:55:45,162 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2022-12-13 11:55:45,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 87 transitions, 837 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2022-12-13 11:55:45,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:45,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2022-12-13 11:55:45,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:47,545 INFO L130 PetriNetUnfolder]: 17396/26256 cut-off events. [2022-12-13 11:55:47,545 INFO L131 PetriNetUnfolder]: For 115551/116374 co-relation queries the response was YES. [2022-12-13 11:55:47,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100916 conditions, 26256 events. 17396/26256 cut-off events. For 115551/116374 co-relation queries the response was YES. Maximal size of possible extension queue 1619. Compared 186590 event pairs, 3085 based on Foata normal form. 655/21444 useless extension candidates. Maximal degree in co-relation 100888. Up to 14988 conditions per place. [2022-12-13 11:55:47,717 INFO L137 encePairwiseOnDemand]: 33/45 looper letters, 83 selfloop transitions, 48 changer transitions 0/149 dead transitions. [2022-12-13 11:55:47,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 149 transitions, 1440 flow [2022-12-13 11:55:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:55:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:55:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2022-12-13 11:55:47,718 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5814814814814815 [2022-12-13 11:55:47,718 INFO L175 Difference]: Start difference. First operand has 76 places, 87 transitions, 837 flow. Second operand 6 states and 157 transitions. [2022-12-13 11:55:47,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 149 transitions, 1440 flow [2022-12-13 11:55:48,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 149 transitions, 1389 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-13 11:55:48,081 INFO L231 Difference]: Finished difference. Result has 81 places, 102 transitions, 1140 flow [2022-12-13 11:55:48,081 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=81, PETRI_TRANSITIONS=102} [2022-12-13 11:55:48,081 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2022-12-13 11:55:48,081 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:48,082 INFO L89 Accepts]: Start accepts. Operand has 81 places, 102 transitions, 1140 flow [2022-12-13 11:55:48,083 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:48,083 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:48,083 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 102 transitions, 1140 flow [2022-12-13 11:55:48,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 102 transitions, 1140 flow [2022-12-13 11:55:48,170 INFO L130 PetriNetUnfolder]: 532/1394 cut-off events. [2022-12-13 11:55:48,171 INFO L131 PetriNetUnfolder]: For 5492/5708 co-relation queries the response was YES. [2022-12-13 11:55:48,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 1394 events. 532/1394 cut-off events. For 5492/5708 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11610 event pairs, 173 based on Foata normal form. 52/1070 useless extension candidates. Maximal degree in co-relation 5715. Up to 677 conditions per place. [2022-12-13 11:55:48,186 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 102 transitions, 1140 flow [2022-12-13 11:55:48,186 INFO L226 LiptonReduction]: Number of co-enabled transitions 2238 [2022-12-13 11:55:48,663 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:55:48,664 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 583 [2022-12-13 11:55:48,664 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 101 transitions, 1123 flow [2022-12-13 11:55:48,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2022-12-13 11:55:48,665 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:48,665 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:48,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:55:48,665 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash -355494272, now seen corresponding path program 1 times [2022-12-13 11:55:48,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:48,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839607643] [2022-12-13 11:55:48,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:48,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:49,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:49,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839607643] [2022-12-13 11:55:49,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839607643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:49,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:49,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:55:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546436384] [2022-12-13 11:55:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:49,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:55:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:49,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:55:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:55:49,278 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2022-12-13 11:55:49,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 101 transitions, 1123 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-12-13 11:55:49,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:49,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2022-12-13 11:55:49,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:52,293 INFO L130 PetriNetUnfolder]: 23737/34249 cut-off events. [2022-12-13 11:55:52,294 INFO L131 PetriNetUnfolder]: For 163899/163899 co-relation queries the response was YES. [2022-12-13 11:55:52,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137965 conditions, 34249 events. 23737/34249 cut-off events. For 163899/163899 co-relation queries the response was YES. Maximal size of possible extension queue 1749. Compared 224381 event pairs, 2187 based on Foata normal form. 150/27758 useless extension candidates. Maximal degree in co-relation 137935. Up to 18661 conditions per place. [2022-12-13 11:55:52,574 INFO L137 encePairwiseOnDemand]: 30/44 looper letters, 107 selfloop transitions, 49 changer transitions 0/165 dead transitions. [2022-12-13 11:55:52,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 165 transitions, 1745 flow [2022-12-13 11:55:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:55:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:55:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2022-12-13 11:55:52,576 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5946969696969697 [2022-12-13 11:55:52,576 INFO L175 Difference]: Start difference. First operand has 81 places, 101 transitions, 1123 flow. Second operand 6 states and 157 transitions. [2022-12-13 11:55:52,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 165 transitions, 1745 flow [2022-12-13 11:55:53,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 165 transitions, 1727 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-12-13 11:55:53,058 INFO L231 Difference]: Finished difference. Result has 91 places, 112 transitions, 1448 flow [2022-12-13 11:55:53,058 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1448, PETRI_PLACES=91, PETRI_TRANSITIONS=112} [2022-12-13 11:55:53,060 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-12-13 11:55:53,060 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:53,060 INFO L89 Accepts]: Start accepts. Operand has 91 places, 112 transitions, 1448 flow [2022-12-13 11:55:53,061 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:53,061 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:53,062 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 112 transitions, 1448 flow [2022-12-13 11:55:53,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 112 transitions, 1448 flow [2022-12-13 11:55:53,163 INFO L130 PetriNetUnfolder]: 562/1476 cut-off events. [2022-12-13 11:55:53,163 INFO L131 PetriNetUnfolder]: For 7689/8026 co-relation queries the response was YES. [2022-12-13 11:55:53,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 1476 events. 562/1476 cut-off events. For 7689/8026 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12406 event pairs, 67 based on Foata normal form. 42/1127 useless extension candidates. Maximal degree in co-relation 6937. Up to 723 conditions per place. [2022-12-13 11:55:53,177 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 112 transitions, 1448 flow [2022-12-13 11:55:53,178 INFO L226 LiptonReduction]: Number of co-enabled transitions 2442 [2022-12-13 11:55:54,044 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:55:54,045 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 985 [2022-12-13 11:55:54,045 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 112 transitions, 1462 flow [2022-12-13 11:55:54,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-12-13 11:55:54,045 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:54,045 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:54,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:55:54,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1434275306, now seen corresponding path program 1 times [2022-12-13 11:55:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:54,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217470610] [2022-12-13 11:55:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:54,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:54,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217470610] [2022-12-13 11:55:54,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217470610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:54,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:54,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:55:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302709936] [2022-12-13 11:55:54,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:54,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:55:54,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:55:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:55:54,537 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2022-12-13 11:55:54,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 1462 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2022-12-13 11:55:54,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:54,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2022-12-13 11:55:54,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:57,327 INFO L130 PetriNetUnfolder]: 19309/29317 cut-off events. [2022-12-13 11:55:57,327 INFO L131 PetriNetUnfolder]: For 228742/229808 co-relation queries the response was YES. [2022-12-13 11:55:57,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129997 conditions, 29317 events. 19309/29317 cut-off events. For 228742/229808 co-relation queries the response was YES. Maximal size of possible extension queue 1936. Compared 214197 event pairs, 3732 based on Foata normal form. 395/23445 useless extension candidates. Maximal degree in co-relation 129960. Up to 15379 conditions per place. [2022-12-13 11:55:57,600 INFO L137 encePairwiseOnDemand]: 35/45 looper letters, 83 selfloop transitions, 49 changer transitions 0/155 dead transitions. [2022-12-13 11:55:57,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 155 transitions, 1946 flow [2022-12-13 11:55:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:55:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:55:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2022-12-13 11:55:57,601 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2022-12-13 11:55:57,601 INFO L175 Difference]: Start difference. First operand has 91 places, 112 transitions, 1462 flow. Second operand 6 states and 148 transitions. [2022-12-13 11:55:57,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 155 transitions, 1946 flow [2022-12-13 11:55:58,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 155 transitions, 1870 flow, removed 38 selfloop flow, removed 0 redundant places. [2022-12-13 11:55:58,383 INFO L231 Difference]: Finished difference. Result has 98 places, 116 transitions, 1604 flow [2022-12-13 11:55:58,383 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1604, PETRI_PLACES=98, PETRI_TRANSITIONS=116} [2022-12-13 11:55:58,384 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2022-12-13 11:55:58,384 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:58,384 INFO L89 Accepts]: Start accepts. Operand has 98 places, 116 transitions, 1604 flow [2022-12-13 11:55:58,385 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:58,385 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:58,385 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 116 transitions, 1604 flow [2022-12-13 11:55:58,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 116 transitions, 1604 flow [2022-12-13 11:55:58,519 INFO L130 PetriNetUnfolder]: 578/1579 cut-off events. [2022-12-13 11:55:58,519 INFO L131 PetriNetUnfolder]: For 9713/9938 co-relation queries the response was YES. [2022-12-13 11:55:58,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7596 conditions, 1579 events. 578/1579 cut-off events. For 9713/9938 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 13803 event pairs, 91 based on Foata normal form. 42/1188 useless extension candidates. Maximal degree in co-relation 7558. Up to 726 conditions per place. [2022-12-13 11:55:58,535 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 116 transitions, 1604 flow [2022-12-13 11:55:58,535 INFO L226 LiptonReduction]: Number of co-enabled transitions 2536 [2022-12-13 11:55:58,540 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:58,540 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 156 [2022-12-13 11:55:58,541 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 116 transitions, 1604 flow [2022-12-13 11:55:58,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2022-12-13 11:55:58,541 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:58,541 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:58,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:55:58,541 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:58,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:58,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1864405692, now seen corresponding path program 1 times [2022-12-13 11:55:58,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:58,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875936364] [2022-12-13 11:55:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:58,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:58,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:58,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875936364] [2022-12-13 11:55:58,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875936364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:58,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:58,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:58,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463770120] [2022-12-13 11:55:58,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:58,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:58,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:58,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:58,655 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2022-12-13 11:55:58,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 1604 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:58,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:58,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2022-12-13 11:55:58,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:03,368 INFO L130 PetriNetUnfolder]: 34012/48402 cut-off events. [2022-12-13 11:56:03,369 INFO L131 PetriNetUnfolder]: For 461124/464172 co-relation queries the response was YES. [2022-12-13 11:56:03,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221361 conditions, 48402 events. 34012/48402 cut-off events. For 461124/464172 co-relation queries the response was YES. Maximal size of possible extension queue 3131. Compared 338568 event pairs, 10963 based on Foata normal form. 1688/32719 useless extension candidates. Maximal degree in co-relation 221320. Up to 45079 conditions per place. [2022-12-13 11:56:03,837 INFO L137 encePairwiseOnDemand]: 30/44 looper letters, 133 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2022-12-13 11:56:03,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 167 transitions, 2533 flow [2022-12-13 11:56:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:56:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:56:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2022-12-13 11:56:03,839 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2022-12-13 11:56:03,839 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 1604 flow. Second operand 3 states and 91 transitions. [2022-12-13 11:56:03,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 167 transitions, 2533 flow [2022-12-13 11:56:04,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 2460 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 11:56:04,746 INFO L231 Difference]: Finished difference. Result has 99 places, 127 transitions, 1628 flow [2022-12-13 11:56:04,746 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1628, PETRI_PLACES=99, PETRI_TRANSITIONS=127} [2022-12-13 11:56:04,747 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2022-12-13 11:56:04,747 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:56:04,747 INFO L89 Accepts]: Start accepts. Operand has 99 places, 127 transitions, 1628 flow [2022-12-13 11:56:04,748 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:56:04,748 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:56:04,748 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 127 transitions, 1628 flow [2022-12-13 11:56:04,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 127 transitions, 1628 flow [2022-12-13 11:56:06,588 INFO L130 PetriNetUnfolder]: 13805/22692 cut-off events. [2022-12-13 11:56:06,588 INFO L131 PetriNetUnfolder]: For 77479/78861 co-relation queries the response was YES. [2022-12-13 11:56:06,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77609 conditions, 22692 events. 13805/22692 cut-off events. For 77479/78861 co-relation queries the response was YES. Maximal size of possible extension queue 3288. Compared 210288 event pairs, 6515 based on Foata normal form. 272/11428 useless extension candidates. Maximal degree in co-relation 77569. Up to 16753 conditions per place. [2022-12-13 11:56:06,958 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 127 transitions, 1628 flow [2022-12-13 11:56:06,958 INFO L226 LiptonReduction]: Number of co-enabled transitions 3138 [2022-12-13 11:56:07,098 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:56:07,099 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2352 [2022-12-13 11:56:07,100 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 127 transitions, 1628 flow [2022-12-13 11:56:07,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:07,100 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:07,100 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:07,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:56:07,100 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:56:07,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:07,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1604671270, now seen corresponding path program 1 times [2022-12-13 11:56:07,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:07,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47267927] [2022-12-13 11:56:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:07,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:07,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:07,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47267927] [2022-12-13 11:56:07,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47267927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:07,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:07,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:56:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867429043] [2022-12-13 11:56:07,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:07,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:56:07,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:07,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:56:07,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:56:07,723 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2022-12-13 11:56:07,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 127 transitions, 1628 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2022-12-13 11:56:07,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:07,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2022-12-13 11:56:07,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:13,010 INFO L130 PetriNetUnfolder]: 38058/56097 cut-off events. [2022-12-13 11:56:13,010 INFO L131 PetriNetUnfolder]: For 353108/355487 co-relation queries the response was YES. [2022-12-13 11:56:13,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239870 conditions, 56097 events. 38058/56097 cut-off events. For 353108/355487 co-relation queries the response was YES. Maximal size of possible extension queue 3834. Compared 436045 event pairs, 5978 based on Foata normal form. 958/43088 useless extension candidates. Maximal degree in co-relation 239827. Up to 36890 conditions per place. [2022-12-13 11:56:13,503 INFO L137 encePairwiseOnDemand]: 33/44 looper letters, 110 selfloop transitions, 42 changer transitions 0/179 dead transitions. [2022-12-13 11:56:13,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 179 transitions, 2188 flow [2022-12-13 11:56:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:56:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:56:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2022-12-13 11:56:13,504 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2022-12-13 11:56:13,504 INFO L175 Difference]: Start difference. First operand has 99 places, 127 transitions, 1628 flow. Second operand 6 states and 142 transitions. [2022-12-13 11:56:13,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 179 transitions, 2188 flow [2022-12-13 11:56:14,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 179 transitions, 2157 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:56:14,692 INFO L231 Difference]: Finished difference. Result has 104 places, 127 transitions, 1735 flow [2022-12-13 11:56:14,692 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1735, PETRI_PLACES=104, PETRI_TRANSITIONS=127} [2022-12-13 11:56:14,692 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2022-12-13 11:56:14,692 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:56:14,693 INFO L89 Accepts]: Start accepts. Operand has 104 places, 127 transitions, 1735 flow [2022-12-13 11:56:14,694 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:56:14,694 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:56:14,694 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 127 transitions, 1735 flow [2022-12-13 11:56:14,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 127 transitions, 1735 flow [2022-12-13 11:56:16,650 INFO L130 PetriNetUnfolder]: 17488/27821 cut-off events. [2022-12-13 11:56:16,650 INFO L131 PetriNetUnfolder]: For 64131/65000 co-relation queries the response was YES. [2022-12-13 11:56:16,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81854 conditions, 27821 events. 17488/27821 cut-off events. For 64131/65000 co-relation queries the response was YES. Maximal size of possible extension queue 3588. Compared 252804 event pairs, 8990 based on Foata normal form. 164/12126 useless extension candidates. Maximal degree in co-relation 81812. Up to 23206 conditions per place. [2022-12-13 11:56:16,963 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 127 transitions, 1735 flow [2022-12-13 11:56:16,964 INFO L226 LiptonReduction]: Number of co-enabled transitions 3138 [2022-12-13 11:56:17,056 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:56:17,057 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2365 [2022-12-13 11:56:17,057 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 127 transitions, 1735 flow [2022-12-13 11:56:17,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2022-12-13 11:56:17,058 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:17,058 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:17,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:56:17,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:56:17,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:17,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1308846640, now seen corresponding path program 1 times [2022-12-13 11:56:17,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:17,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130348821] [2022-12-13 11:56:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:17,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:17,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:17,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130348821] [2022-12-13 11:56:17,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130348821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:17,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:17,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:56:17,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886908689] [2022-12-13 11:56:17,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:17,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:56:17,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:56:17,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:56:17,297 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2022-12-13 11:56:17,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 127 transitions, 1735 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:17,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:17,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2022-12-13 11:56:17,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:21,325 INFO L130 PetriNetUnfolder]: 26813/40009 cut-off events. [2022-12-13 11:56:21,325 INFO L131 PetriNetUnfolder]: For 364420/367432 co-relation queries the response was YES. [2022-12-13 11:56:21,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195363 conditions, 40009 events. 26813/40009 cut-off events. For 364420/367432 co-relation queries the response was YES. Maximal size of possible extension queue 2586. Compared 298754 event pairs, 4615 based on Foata normal form. 1802/26644 useless extension candidates. Maximal degree in co-relation 195318. Up to 35101 conditions per place. [2022-12-13 11:56:21,618 INFO L137 encePairwiseOnDemand]: 30/44 looper letters, 157 selfloop transitions, 25 changer transitions 4/207 dead transitions. [2022-12-13 11:56:21,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 207 transitions, 3226 flow [2022-12-13 11:56:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:56:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:56:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2022-12-13 11:56:21,624 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7159090909090909 [2022-12-13 11:56:21,624 INFO L175 Difference]: Start difference. First operand has 104 places, 127 transitions, 1735 flow. Second operand 4 states and 126 transitions. [2022-12-13 11:56:21,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 207 transitions, 3226 flow [2022-12-13 11:56:22,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 207 transitions, 3135 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-13 11:56:22,249 INFO L231 Difference]: Finished difference. Result has 103 places, 129 transitions, 1599 flow [2022-12-13 11:56:22,249 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1599, PETRI_PLACES=103, PETRI_TRANSITIONS=129} [2022-12-13 11:56:22,250 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 24 predicate places. [2022-12-13 11:56:22,250 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:56:22,250 INFO L89 Accepts]: Start accepts. Operand has 103 places, 129 transitions, 1599 flow [2022-12-13 11:56:22,251 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:56:22,251 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:56:22,251 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 129 transitions, 1599 flow [2022-12-13 11:56:22,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 129 transitions, 1599 flow [2022-12-13 11:56:23,859 INFO L130 PetriNetUnfolder]: 11740/20537 cut-off events. [2022-12-13 11:56:23,859 INFO L131 PetriNetUnfolder]: For 71316/95412 co-relation queries the response was YES. [2022-12-13 11:56:23,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85367 conditions, 20537 events. 11740/20537 cut-off events. For 71316/95412 co-relation queries the response was YES. Maximal size of possible extension queue 2967. Compared 198386 event pairs, 3098 based on Foata normal form. 279/10640 useless extension candidates. Maximal degree in co-relation 85326. Up to 15658 conditions per place. [2022-12-13 11:56:24,280 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 129 transitions, 1599 flow [2022-12-13 11:56:24,280 INFO L226 LiptonReduction]: Number of co-enabled transitions 3268 [2022-12-13 11:56:24,763 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [530] L853-3-->L2-1: Formula: (and (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_2| (mod v_~main$tmp_guard0~0_Out_2 256)) (= v_~main$tmp_guard0~0_Out_2 (ite (= (ite (= v_~__unbuffered_cnt~0_In_1 4) 1 0) 0) 0 1)) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_2| 0)) (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_2| |v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_2|)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_In_1} OutVars{ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_Out_2|, ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_Out_2|, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_2|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_In_1, ~main$tmp_guard0~0=v_~main$tmp_guard0~0_Out_2, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet10#1, ULTIMATE.start_main_#t~pre9#1, ULTIMATE.start_assume_abort_if_not_~cond#1, ~main$tmp_guard0~0, ULTIMATE.start_assume_abort_if_not_#in~cond#1] and [547] L783-->L864: Formula: (let ((.cse4 (not (= (mod v_~z$r_buff1_thd0~0_428 256) 0))) (.cse3 (not (= (mod v_~z$w_buff0_used~0_582 256) 0))) (.cse5 (not (= (mod v_~z$r_buff0_thd0~0_419 256) 0)))) (let ((.cse0 (and .cse5 (not (= (mod v_~z$w_buff0_used~0_583 256) 0)))) (.cse2 (and .cse5 .cse3)) (.cse1 (and (not (= (mod v_~z$w_buff1_used~0_535 256) 0)) .cse4))) (and (= (ite .cse0 v_~z$w_buff0~0_450 (ite .cse1 v_~z$w_buff1~0_426 1)) v_~z~0_480) (= (ite .cse0 0 v_~z$w_buff0_used~0_583) v_~z$w_buff0_used~0_582) (= v_~z$r_buff0_thd0~0_418 (ite .cse2 0 v_~z$r_buff0_thd0~0_419)) (= v_~z$r_buff1_thd0~0_427 (ite (or (and (not (= (mod v_~z$r_buff0_thd0~0_418 256) 0)) .cse3) (and (not (= (mod v_~z$w_buff1_used~0_534 256) 0)) .cse4)) 0 v_~z$r_buff1_thd0~0_428)) (= v_~z$w_buff1_used~0_534 (ite (or .cse2 .cse1) 0 v_~z$w_buff1_used~0_535))))) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_419, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_583, ~z$w_buff0~0=v_~z$w_buff0~0_450, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_428, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_535, ~z$w_buff1~0=v_~z$w_buff1~0_426} OutVars{~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_418, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_582, ~z$w_buff0~0=v_~z$w_buff0~0_450, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_427, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_534, ~z$w_buff1~0=v_~z$w_buff1~0_426, ~z~0=v_~z~0_480} AuxVars[] AssignedVars[~z$r_buff0_thd0~0, ~z$w_buff0_used~0, ~z$r_buff1_thd0~0, ~z$w_buff1_used~0, ~z~0] [2022-12-13 11:56:24,923 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [530] L853-3-->L2-1: Formula: (and (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_2| (mod v_~main$tmp_guard0~0_Out_2 256)) (= v_~main$tmp_guard0~0_Out_2 (ite (= (ite (= v_~__unbuffered_cnt~0_In_1 4) 1 0) 0) 0 1)) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_2| 0)) (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_2| |v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_2|)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_In_1} OutVars{ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_Out_2|, ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_Out_2|, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_2|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_In_1, ~main$tmp_guard0~0=v_~main$tmp_guard0~0_Out_2, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet10#1, ULTIMATE.start_main_#t~pre9#1, ULTIMATE.start_assume_abort_if_not_~cond#1, ~main$tmp_guard0~0, ULTIMATE.start_assume_abort_if_not_#in~cond#1] and [549] L783-->L864: Formula: (let ((.cse2 (not (= (mod v_~z$w_buff0_used~0_590 256) 0))) (.cse3 (not (= (mod v_~z$r_buff1_thd0~0_432 256) 0))) (.cse5 (not (= (mod v_~z$r_buff0_thd0~0_423 256) 0)))) (let ((.cse4 (and (not (= (mod v_~z$w_buff0_used~0_591 256) 0)) .cse5)) (.cse1 (and .cse3 (not (= (mod v_~z$w_buff1_used~0_543 256) 0)))) (.cse0 (and .cse5 .cse2))) (and (= v_~z$w_buff1_used~0_542 (ite (or .cse0 .cse1) 0 v_~z$w_buff1_used~0_543)) (= v_~z$r_buff1_thd0~0_431 (ite (or (and .cse2 (not (= (mod v_~z$r_buff0_thd0~0_422 256) 0))) (and .cse3 (not (= 0 (mod v_~z$w_buff1_used~0_542 256))))) 0 v_~z$r_buff1_thd0~0_432)) (= v_~z$w_buff0_used~0_590 (ite .cse4 0 v_~z$w_buff0_used~0_591)) (= v_~z~0_488 (ite .cse4 v_~z$w_buff0~0_454 (ite .cse1 v_~z$w_buff1~0_430 1))) (= v_~z$r_buff0_thd0~0_422 (ite .cse0 0 v_~z$r_buff0_thd0~0_423))))) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_423, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_591, ~z$w_buff0~0=v_~z$w_buff0~0_454, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_432, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_543, ~z$w_buff1~0=v_~z$w_buff1~0_430} OutVars{~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_422, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_590, ~z$w_buff0~0=v_~z$w_buff0~0_454, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_431, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_542, ~z$w_buff1~0=v_~z$w_buff1~0_430, ~z~0=v_~z~0_488} AuxVars[] AssignedVars[~z$r_buff0_thd0~0, ~z$w_buff0_used~0, ~z$r_buff1_thd0~0, ~z$w_buff1_used~0, ~z~0] [2022-12-13 11:56:25,367 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:56:25,368 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 3118 [2022-12-13 11:56:25,368 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 129 transitions, 1619 flow [2022-12-13 11:56:25,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:25,368 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:25,369 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:25,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:56:25,369 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:56:25,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1389889127, now seen corresponding path program 1 times [2022-12-13 11:56:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:25,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084023144] [2022-12-13 11:56:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:25,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:25,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084023144] [2022-12-13 11:56:25,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084023144] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:25,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:25,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:56:25,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5746248] [2022-12-13 11:56:25,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:25,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:56:25,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:56:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:56:25,587 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2022-12-13 11:56:25,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 129 transitions, 1619 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:25,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:25,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2022-12-13 11:56:25,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand