/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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 21:31:47,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 21:31:47,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 21:31:47,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 21:31:47,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 21:31:47,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 21:31:47,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 21:31:47,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 21:31:47,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 21:31:47,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 21:31:47,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 21:31:47,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 21:31:47,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 21:31:47,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 21:31:47,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 21:31:47,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 21:31:47,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 21:31:47,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 21:31:47,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 21:31:47,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 21:31:47,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 21:31:47,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 21:31:47,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 21:31:47,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 21:31:47,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 21:31:47,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 21:31:47,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 21:31:47,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 21:31:47,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 21:31:47,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 21:31:47,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 21:31:47,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 21:31:47,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 21:31:47,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 21:31:47,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 21:31:47,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 21:31:47,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 21:31:47,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 21:31:47,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 21:31:47,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 21:31:47,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 21:31:47,382 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-SemanticLbe.epf [2022-12-12 21:31:47,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 21:31:47,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 21:31:47,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 21:31:47,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 21:31:47,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 21:31:47,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 21:31:47,417 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 21:31:47,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 21:31:47,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 21:31:47,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 21:31:47,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 21:31:47,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 21:31:47,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 21:31:47,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 21:31:47,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 21:31:47,419 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 21:31:47,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 21:31:47,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 21:31:47,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 21:31:47,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 21:31:47,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 21:31:47,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 21:31:47,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 21:31:47,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:31:47,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 21:31:47,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 21:31:47,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 21:31:47,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 21:31:47,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 21:31:47,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 21:31:47,421 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 21:31:47,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 21:31:47,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 21:31:47,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 21:31:47,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 21:31:47,725 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 21:31:47,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i [2022-12-12 21:31:48,881 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 21:31:49,153 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 21:31:49,154 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i [2022-12-12 21:31:49,166 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3840867d4/65ddd44bb3494d18b2141f079f0ee694/FLAG1db511fcf [2022-12-12 21:31:49,181 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3840867d4/65ddd44bb3494d18b2141f079f0ee694 [2022-12-12 21:31:49,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 21:31:49,185 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 21:31:49,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 21:31:49,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 21:31:49,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 21:31:49,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b223bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49, skipping insertion in model container [2022-12-12 21:31:49,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 21:31:49,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 21:31:49,366 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/mix005_tso.oepc.i[949,962] [2022-12-12 21:31:49,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,568 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,570 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,570 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,570 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,570 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:31:49,620 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 21:31:49,632 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/mix005_tso.oepc.i[949,962] [2022-12-12 21:31:49,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:31:49,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:31:49,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:31:49,767 INFO L208 MainTranslator]: Completed translation [2022-12-12 21:31:49,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49 WrapperNode [2022-12-12 21:31:49,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 21:31:49,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 21:31:49,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 21:31:49,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 21:31:49,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,838 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2022-12-12 21:31:49,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 21:31:49,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 21:31:49,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 21:31:49,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 21:31:49,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 21:31:49,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 21:31:49,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 21:31:49,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 21:31:49,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (1/1) ... [2022-12-12 21:31:49,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:31:49,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 21:31:49,923 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) [2022-12-12 21:31:49,947 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 [2022-12-12 21:31:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 21:31:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 21:31:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 21:31:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 21:31:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 21:31:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 21:31:49,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 21:31:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 21:31:49,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 21:31:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 21:31:49,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 21:31:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-12 21:31:49,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-12 21:31:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 21:31:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 21:31:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 21:31:49,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 21:31:49,966 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 21:31:50,163 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 21:31:50,165 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 21:31:50,445 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 21:31:50,606 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 21:31:50,606 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 21:31:50,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:31:50 BoogieIcfgContainer [2022-12-12 21:31:50,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 21:31:50,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 21:31:50,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 21:31:50,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 21:31:50,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 09:31:49" (1/3) ... [2022-12-12 21:31:50,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331f8b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:31:50, skipping insertion in model container [2022-12-12 21:31:50,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:31:49" (2/3) ... [2022-12-12 21:31:50,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331f8b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:31:50, skipping insertion in model container [2022-12-12 21:31:50,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:31:50" (3/3) ... [2022-12-12 21:31:50,617 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005_tso.oepc.i [2022-12-12 21:31:50,635 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 21:31:50,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 21:31:50,636 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 21:31:50,712 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 21:31:50,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 133 transitions, 286 flow [2022-12-12 21:31:50,839 INFO L130 PetriNetUnfolder]: 2/129 cut-off events. [2022-12-12 21:31:50,839 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:31:50,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-12 21:31:50,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 133 transitions, 286 flow [2022-12-12 21:31:50,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 129 transitions, 270 flow [2022-12-12 21:31:50,852 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 21:31:50,878 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 129 transitions, 270 flow [2022-12-12 21:31:50,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 270 flow [2022-12-12 21:31:50,927 INFO L130 PetriNetUnfolder]: 2/129 cut-off events. [2022-12-12 21:31:50,927 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:31:50,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-12 21:31:50,932 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 129 transitions, 270 flow [2022-12-12 21:31:50,932 INFO L226 LiptonReduction]: Number of co-enabled transitions 3272 [2022-12-12 21:32:01,288 INFO L241 LiptonReduction]: Total number of compositions: 101 [2022-12-12 21:32:01,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 21:32:01,307 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@4b8d3ca0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 21:32:01,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-12 21:32:01,311 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-12 21:32:01,311 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:32:01,311 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:01,311 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-12 21:32:01,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:01,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:01,315 INFO L85 PathProgramCache]: Analyzing trace with hash 555940396, now seen corresponding path program 1 times [2022-12-12 21:32:01,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:01,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323303355] [2022-12-12 21:32:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:01,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:01,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:01,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323303355] [2022-12-12 21:32:01,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323303355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:01,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:01,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:32:01,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116547431] [2022-12-12 21:32:01,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:01,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:32:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:01,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:32:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:32:01,710 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 78 [2022-12-12 21:32:01,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-12-12 21:32:01,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:01,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 78 [2022-12-12 21:32:01,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:10,105 INFO L130 PetriNetUnfolder]: 57424/81629 cut-off events. [2022-12-12 21:32:10,105 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-12-12 21:32:10,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157782 conditions, 81629 events. 57424/81629 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 4074. Compared 598895 event pairs, 22678 based on Foata normal form. 0/51066 useless extension candidates. Maximal degree in co-relation 157770. Up to 63597 conditions per place. [2022-12-12 21:32:10,371 INFO L137 encePairwiseOnDemand]: 74/78 looper letters, 44 selfloop transitions, 2 changer transitions 64/127 dead transitions. [2022-12-12 21:32:10,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 127 transitions, 492 flow [2022-12-12 21:32:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:32:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:32:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2022-12-12 21:32:10,383 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7008547008547008 [2022-12-12 21:32:10,389 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 0 predicate places. [2022-12-12 21:32:10,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 127 transitions, 492 flow [2022-12-12 21:32:10,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 63 transitions, 236 flow [2022-12-12 21:32:10,494 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 236 flow [2022-12-12 21:32:10,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-12-12 21:32:10,494 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:10,495 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:10,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 21:32:10,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash -77521807, now seen corresponding path program 1 times [2022-12-12 21:32:10,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:10,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697819504] [2022-12-12 21:32:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:10,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:10,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:10,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697819504] [2022-12-12 21:32:10,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697819504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:10,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:10,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:32:10,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873242128] [2022-12-12 21:32:10,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:10,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:32:10,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:32:10,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:32:10,997 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 78 [2022-12-12 21:32:10,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2022-12-12 21:32:10,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:10,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 78 [2022-12-12 21:32:10,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:13,388 INFO L130 PetriNetUnfolder]: 21719/29999 cut-off events. [2022-12-12 21:32:13,389 INFO L131 PetriNetUnfolder]: For 5404/5404 co-relation queries the response was YES. [2022-12-12 21:32:13,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82158 conditions, 29999 events. 21719/29999 cut-off events. For 5404/5404 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 168141 event pairs, 2409 based on Foata normal form. 504/26109 useless extension candidates. Maximal degree in co-relation 82143. Up to 21289 conditions per place. [2022-12-12 21:32:13,559 INFO L137 encePairwiseOnDemand]: 75/78 looper letters, 78 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2022-12-12 21:32:13,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 91 transitions, 500 flow [2022-12-12 21:32:13,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:32:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:32:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2022-12-12 21:32:13,564 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36324786324786323 [2022-12-12 21:32:13,564 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -30 predicate places. [2022-12-12 21:32:13,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 91 transitions, 500 flow [2022-12-12 21:32:13,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 91 transitions, 500 flow [2022-12-12 21:32:13,698 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 91 transitions, 500 flow [2022-12-12 21:32:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2022-12-12 21:32:13,699 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:13,699 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:13,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 21:32:13,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:13,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:13,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1493049102, now seen corresponding path program 1 times [2022-12-12 21:32:13,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:13,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375341233] [2022-12-12 21:32:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:13,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:14,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:14,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375341233] [2022-12-12 21:32:14,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375341233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:14,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:14,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:32:14,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339828482] [2022-12-12 21:32:14,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:14,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:32:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:32:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:32:14,212 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 78 [2022-12-12 21:32:14,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 91 transitions, 500 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-12-12 21:32:14,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:14,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 78 [2022-12-12 21:32:14,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:16,337 INFO L130 PetriNetUnfolder]: 20471/28450 cut-off events. [2022-12-12 21:32:16,337 INFO L131 PetriNetUnfolder]: For 5493/5493 co-relation queries the response was YES. [2022-12-12 21:32:16,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105018 conditions, 28450 events. 20471/28450 cut-off events. For 5493/5493 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 157585 event pairs, 971 based on Foata normal form. 360/24608 useless extension candidates. Maximal degree in co-relation 105000. Up to 21001 conditions per place. [2022-12-12 21:32:16,523 INFO L137 encePairwiseOnDemand]: 75/78 looper letters, 127 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2022-12-12 21:32:16,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 141 transitions, 1054 flow [2022-12-12 21:32:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:32:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:32:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2022-12-12 21:32:16,528 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2022-12-12 21:32:16,530 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -28 predicate places. [2022-12-12 21:32:16,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 141 transitions, 1054 flow [2022-12-12 21:32:16,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 141 transitions, 1054 flow [2022-12-12 21:32:16,685 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 141 transitions, 1054 flow [2022-12-12 21:32:16,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-12-12 21:32:16,685 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:16,685 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:16,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 21:32:16,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:16,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1192668314, now seen corresponding path program 1 times [2022-12-12 21:32:16,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:16,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393145890] [2022-12-12 21:32:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:17,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:17,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393145890] [2022-12-12 21:32:17,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393145890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:17,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:17,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:32:17,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770850237] [2022-12-12 21:32:17,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:17,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:32:17,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:17,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:32:17,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:32:17,235 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 78 [2022-12-12 21:32:17,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 141 transitions, 1054 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-12-12 21:32:17,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:17,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 78 [2022-12-12 21:32:17,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:19,599 INFO L130 PetriNetUnfolder]: 20291/28183 cut-off events. [2022-12-12 21:32:19,599 INFO L131 PetriNetUnfolder]: For 16817/16817 co-relation queries the response was YES. [2022-12-12 21:32:19,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126493 conditions, 28183 events. 20291/28183 cut-off events. For 16817/16817 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 155642 event pairs, 817 based on Foata normal form. 50/24051 useless extension candidates. Maximal degree in co-relation 126472. Up to 21636 conditions per place. [2022-12-12 21:32:19,767 INFO L137 encePairwiseOnDemand]: 71/78 looper letters, 161 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2022-12-12 21:32:19,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 209 transitions, 1969 flow [2022-12-12 21:32:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:32:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:32:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2022-12-12 21:32:19,769 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2022-12-12 21:32:19,770 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -25 predicate places. [2022-12-12 21:32:19,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 209 transitions, 1969 flow [2022-12-12 21:32:19,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 209 transitions, 1969 flow [2022-12-12 21:32:19,898 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 209 transitions, 1969 flow [2022-12-12 21:32:19,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-12-12 21:32:19,899 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:19,899 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:19,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 21:32:19,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:19,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1696835270, now seen corresponding path program 1 times [2022-12-12 21:32:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:19,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679447046] [2022-12-12 21:32:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:20,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:20,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679447046] [2022-12-12 21:32:20,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679447046] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:20,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:20,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:32:20,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962354175] [2022-12-12 21:32:20,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:20,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:32:20,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:32:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:32:20,491 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 78 [2022-12-12 21:32:20,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 209 transitions, 1969 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2022-12-12 21:32:20,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:20,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 78 [2022-12-12 21:32:20,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:23,299 INFO L130 PetriNetUnfolder]: 20483/28601 cut-off events. [2022-12-12 21:32:23,300 INFO L131 PetriNetUnfolder]: For 35478/35478 co-relation queries the response was YES. [2022-12-12 21:32:23,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150258 conditions, 28601 events. 20483/28601 cut-off events. For 35478/35478 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 161357 event pairs, 733 based on Foata normal form. 16/24435 useless extension candidates. Maximal degree in co-relation 150234. Up to 21937 conditions per place. [2022-12-12 21:32:23,468 INFO L137 encePairwiseOnDemand]: 70/78 looper letters, 191 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2022-12-12 21:32:23,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 243 transitions, 2750 flow [2022-12-12 21:32:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:32:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:32:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2022-12-12 21:32:23,470 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38782051282051283 [2022-12-12 21:32:23,471 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -22 predicate places. [2022-12-12 21:32:23,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 243 transitions, 2750 flow [2022-12-12 21:32:23,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 243 transitions, 2750 flow [2022-12-12 21:32:23,603 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 243 transitions, 2750 flow [2022-12-12 21:32:23,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2022-12-12 21:32:23,603 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:23,603 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:23,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 21:32:23,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:23,604 INFO L85 PathProgramCache]: Analyzing trace with hash 861965996, now seen corresponding path program 2 times [2022-12-12 21:32:23,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:23,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190563080] [2022-12-12 21:32:23,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:23,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:24,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:24,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190563080] [2022-12-12 21:32:24,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190563080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:24,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:24,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:32:24,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276433293] [2022-12-12 21:32:24,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:24,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:32:24,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:24,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:32:24,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:32:24,106 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 78 [2022-12-12 21:32:24,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 243 transitions, 2750 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-12-12 21:32:24,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:24,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 78 [2022-12-12 21:32:24,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:27,324 INFO L130 PetriNetUnfolder]: 24994/34494 cut-off events. [2022-12-12 21:32:27,324 INFO L131 PetriNetUnfolder]: For 81278/81278 co-relation queries the response was YES. [2022-12-12 21:32:27,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208710 conditions, 34494 events. 24994/34494 cut-off events. For 81278/81278 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 194309 event pairs, 899 based on Foata normal form. 400/29923 useless extension candidates. Maximal degree in co-relation 208683. Up to 26460 conditions per place. [2022-12-12 21:32:27,571 INFO L137 encePairwiseOnDemand]: 70/78 looper letters, 232 selfloop transitions, 41 changer transitions 0/296 dead transitions. [2022-12-12 21:32:27,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 296 transitions, 3933 flow [2022-12-12 21:32:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:32:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:32:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2022-12-12 21:32:27,573 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4256410256410256 [2022-12-12 21:32:27,573 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -18 predicate places. [2022-12-12 21:32:27,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 296 transitions, 3933 flow [2022-12-12 21:32:27,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 296 transitions, 3933 flow [2022-12-12 21:32:27,758 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 296 transitions, 3933 flow [2022-12-12 21:32:27,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-12-12 21:32:27,758 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:27,758 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:27,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 21:32:27,758 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:27,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:27,759 INFO L85 PathProgramCache]: Analyzing trace with hash -434408097, now seen corresponding path program 1 times [2022-12-12 21:32:27,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:27,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783249631] [2022-12-12 21:32:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:27,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:28,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:28,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783249631] [2022-12-12 21:32:28,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783249631] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:28,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:28,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:32:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055486593] [2022-12-12 21:32:28,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:28,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:32:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:28,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:32:28,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:32:28,129 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 78 [2022-12-12 21:32:28,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 296 transitions, 3933 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) [2022-12-12 21:32:28,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:28,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 78 [2022-12-12 21:32:28,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:33,252 INFO L130 PetriNetUnfolder]: 36753/51207 cut-off events. [2022-12-12 21:32:33,253 INFO L131 PetriNetUnfolder]: For 122091/122091 co-relation queries the response was YES. [2022-12-12 21:32:33,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360137 conditions, 51207 events. 36753/51207 cut-off events. For 122091/122091 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 313387 event pairs, 679 based on Foata normal form. 588/43859 useless extension candidates. Maximal degree in co-relation 360107. Up to 39841 conditions per place. [2022-12-12 21:32:33,558 INFO L137 encePairwiseOnDemand]: 69/78 looper letters, 402 selfloop transitions, 28 changer transitions 133/574 dead transitions. [2022-12-12 21:32:33,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 574 transitions, 8832 flow [2022-12-12 21:32:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:32:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:32:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2022-12-12 21:32:33,560 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2022-12-12 21:32:33,560 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -13 predicate places. [2022-12-12 21:32:33,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 574 transitions, 8832 flow [2022-12-12 21:32:33,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 441 transitions, 6780 flow [2022-12-12 21:32:33,753 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 441 transitions, 6780 flow [2022-12-12 21:32:33,753 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) [2022-12-12 21:32:33,753 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:33,753 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:33,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 21:32:33,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2006384935, now seen corresponding path program 2 times [2022-12-12 21:32:33,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:33,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934177986] [2022-12-12 21:32:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:33,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:33,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:33,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934177986] [2022-12-12 21:32:33,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934177986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:33,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:33,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:32:33,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722851947] [2022-12-12 21:32:33,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:33,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:32:33,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:32:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:32:33,899 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 78 [2022-12-12 21:32:33,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 441 transitions, 6780 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-12-12 21:32:33,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:33,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 78 [2022-12-12 21:32:33,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:40,285 INFO L130 PetriNetUnfolder]: 43029/60660 cut-off events. [2022-12-12 21:32:40,286 INFO L131 PetriNetUnfolder]: For 303231/306396 co-relation queries the response was YES. [2022-12-12 21:32:40,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451427 conditions, 60660 events. 43029/60660 cut-off events. For 303231/306396 co-relation queries the response was YES. Maximal size of possible extension queue 2198. Compared 397801 event pairs, 3606 based on Foata normal form. 860/51945 useless extension candidates. Maximal degree in co-relation 451394. Up to 49639 conditions per place. [2022-12-12 21:32:40,904 INFO L137 encePairwiseOnDemand]: 64/78 looper letters, 444 selfloop transitions, 99 changer transitions 3/598 dead transitions. [2022-12-12 21:32:40,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 598 transitions, 10378 flow [2022-12-12 21:32:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:32:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:32:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2022-12-12 21:32:40,906 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.41452991452991456 [2022-12-12 21:32:40,907 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -11 predicate places. [2022-12-12 21:32:40,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 598 transitions, 10378 flow [2022-12-12 21:32:41,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 595 transitions, 10324 flow [2022-12-12 21:32:41,218 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 595 transitions, 10324 flow [2022-12-12 21:32:41,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-12-12 21:32:41,218 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:41,218 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:41,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 21:32:41,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:41,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:41,219 INFO L85 PathProgramCache]: Analyzing trace with hash -304168128, now seen corresponding path program 1 times [2022-12-12 21:32:41,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:41,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352511738] [2022-12-12 21:32:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:41,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:41,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352511738] [2022-12-12 21:32:41,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352511738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:41,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:41,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:32:41,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219516760] [2022-12-12 21:32:41,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:41,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:32:41,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:41,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:32:41,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:32:41,373 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 78 [2022-12-12 21:32:41,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 595 transitions, 10324 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-12-12 21:32:41,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:41,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 78 [2022-12-12 21:32:41,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:46,277 INFO L130 PetriNetUnfolder]: 25279/38010 cut-off events. [2022-12-12 21:32:46,277 INFO L131 PetriNetUnfolder]: For 221927/226979 co-relation queries the response was YES. [2022-12-12 21:32:46,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314734 conditions, 38010 events. 25279/38010 cut-off events. For 221927/226979 co-relation queries the response was YES. Maximal size of possible extension queue 1465. Compared 265098 event pairs, 1584 based on Foata normal form. 3318/35634 useless extension candidates. Maximal degree in co-relation 314698. Up to 30523 conditions per place. [2022-12-12 21:32:46,567 INFO L137 encePairwiseOnDemand]: 64/78 looper letters, 437 selfloop transitions, 183 changer transitions 18/690 dead transitions. [2022-12-12 21:32:46,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 690 transitions, 13272 flow [2022-12-12 21:32:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:32:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:32:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2022-12-12 21:32:46,569 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42948717948717946 [2022-12-12 21:32:46,569 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -8 predicate places. [2022-12-12 21:32:46,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 690 transitions, 13272 flow [2022-12-12 21:32:46,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 672 transitions, 12912 flow [2022-12-12 21:32:46,893 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 672 transitions, 12912 flow [2022-12-12 21:32:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-12-12 21:32:46,893 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:46,893 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:46,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 21:32:46,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash -466189096, now seen corresponding path program 1 times [2022-12-12 21:32:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:46,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107830302] [2022-12-12 21:32:46,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:46,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:47,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:47,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107830302] [2022-12-12 21:32:47,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107830302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:47,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:47,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:32:47,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465620153] [2022-12-12 21:32:47,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:47,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:32:47,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:32:47,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:32:47,056 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 78 [2022-12-12 21:32:47,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 672 transitions, 12912 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2022-12-12 21:32:47,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:47,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 78 [2022-12-12 21:32:47,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:54,692 INFO L130 PetriNetUnfolder]: 35508/54969 cut-off events. [2022-12-12 21:32:54,692 INFO L131 PetriNetUnfolder]: For 342869/347110 co-relation queries the response was YES. [2022-12-12 21:32:54,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494988 conditions, 54969 events. 35508/54969 cut-off events. For 342869/347110 co-relation queries the response was YES. Maximal size of possible extension queue 2464. Compared 429816 event pairs, 3286 based on Foata normal form. 1347/47895 useless extension candidates. Maximal degree in co-relation 494949. Up to 44700 conditions per place. [2022-12-12 21:32:55,026 INFO L137 encePairwiseOnDemand]: 75/78 looper letters, 766 selfloop transitions, 36 changer transitions 200/1058 dead transitions. [2022-12-12 21:32:55,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 1058 transitions, 22612 flow [2022-12-12 21:32:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:32:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:32:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2022-12-12 21:32:55,028 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.391025641025641 [2022-12-12 21:32:55,029 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2022-12-12 21:32:55,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 1058 transitions, 22612 flow [2022-12-12 21:32:55,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 858 transitions, 18212 flow [2022-12-12 21:32:55,260 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 858 transitions, 18212 flow [2022-12-12 21:32:55,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2022-12-12 21:32:55,261 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:55,261 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:55,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 21:32:55,261 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:55,261 INFO L85 PathProgramCache]: Analyzing trace with hash -342058218, now seen corresponding path program 1 times [2022-12-12 21:32:55,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:55,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221196811] [2022-12-12 21:32:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:55,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:32:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:32:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:32:55,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221196811] [2022-12-12 21:32:55,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221196811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:32:55,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:32:55,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:32:55,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526102993] [2022-12-12 21:32:55,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:32:55,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:32:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:32:55,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:32:55,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:32:55,685 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 78 [2022-12-12 21:32:55,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 858 transitions, 18212 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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) [2022-12-12 21:32:55,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:32:55,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 78 [2022-12-12 21:32:55,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:32:59,565 INFO L130 PetriNetUnfolder]: 13971/23141 cut-off events. [2022-12-12 21:32:59,565 INFO L131 PetriNetUnfolder]: For 202946/207702 co-relation queries the response was YES. [2022-12-12 21:32:59,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227249 conditions, 23141 events. 13971/23141 cut-off events. For 202946/207702 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 173653 event pairs, 487 based on Foata normal form. 3097/22691 useless extension candidates. Maximal degree in co-relation 227207. Up to 17784 conditions per place. [2022-12-12 21:32:59,718 INFO L137 encePairwiseOnDemand]: 64/78 looper letters, 473 selfloop transitions, 267 changer transitions 98/888 dead transitions. [2022-12-12 21:32:59,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 888 transitions, 20479 flow [2022-12-12 21:32:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:32:59,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:32:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2022-12-12 21:32:59,720 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2022-12-12 21:32:59,720 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -1 predicate places. [2022-12-12 21:32:59,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 888 transitions, 20479 flow [2022-12-12 21:32:59,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 790 transitions, 18175 flow [2022-12-12 21:32:59,947 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 790 transitions, 18175 flow [2022-12-12 21:32:59,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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) [2022-12-12 21:32:59,947 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:32:59,947 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:32:59,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 21:32:59,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:32:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:32:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2036484294, now seen corresponding path program 1 times [2022-12-12 21:32:59,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:32:59,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692930073] [2022-12-12 21:32:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:32:59,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:32:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:33:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:33:00,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:33:00,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692930073] [2022-12-12 21:33:00,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692930073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:33:00,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:33:00,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 21:33:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206461003] [2022-12-12 21:33:00,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:33:00,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:33:00,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:33:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:33:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:33:00,177 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 78 [2022-12-12 21:33:00,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 790 transitions, 18175 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2022-12-12 21:33:00,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:33:00,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 78 [2022-12-12 21:33:00,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:33:02,816 INFO L130 PetriNetUnfolder]: 10481/16489 cut-off events. [2022-12-12 21:33:02,817 INFO L131 PetriNetUnfolder]: For 183128/186883 co-relation queries the response was YES. [2022-12-12 21:33:02,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173877 conditions, 16489 events. 10481/16489 cut-off events. For 183128/186883 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 109333 event pairs, 123 based on Foata normal form. 2053/16039 useless extension candidates. Maximal degree in co-relation 173832. Up to 11925 conditions per place. [2022-12-12 21:33:02,905 INFO L137 encePairwiseOnDemand]: 64/78 looper letters, 190 selfloop transitions, 113 changer transitions 458/782 dead transitions. [2022-12-12 21:33:02,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 782 transitions, 19447 flow [2022-12-12 21:33:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:33:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:33:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2022-12-12 21:33:02,907 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38675213675213677 [2022-12-12 21:33:02,908 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2022-12-12 21:33:02,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 782 transitions, 19447 flow [2022-12-12 21:33:02,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 324 transitions, 7920 flow [2022-12-12 21:33:02,976 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 324 transitions, 7920 flow [2022-12-12 21:33:02,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2022-12-12 21:33:02,977 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:33:02,977 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:33:02,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 21:33:02,977 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:33:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:33:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1705357530, now seen corresponding path program 1 times [2022-12-12 21:33:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:33:02,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071075268] [2022-12-12 21:33:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:33:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:33:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:33:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:33:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:33:03,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071075268] [2022-12-12 21:33:03,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071075268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:33:03,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:33:03,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:33:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424401718] [2022-12-12 21:33:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:33:03,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:33:03,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:33:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:33:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:33:03,345 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 78 [2022-12-12 21:33:03,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 324 transitions, 7920 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-12 21:33:03,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:33:03,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 78 [2022-12-12 21:33:03,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:33:05,285 INFO L130 PetriNetUnfolder]: 8380/12951 cut-off events. [2022-12-12 21:33:05,286 INFO L131 PetriNetUnfolder]: For 125905/127359 co-relation queries the response was YES. [2022-12-12 21:33:05,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154092 conditions, 12951 events. 8380/12951 cut-off events. For 125905/127359 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 78362 event pairs, 125 based on Foata normal form. 182/10705 useless extension candidates. Maximal degree in co-relation 154044. Up to 10798 conditions per place. [2022-12-12 21:33:05,344 INFO L137 encePairwiseOnDemand]: 72/78 looper letters, 169 selfloop transitions, 7 changer transitions 299/496 dead transitions. [2022-12-12 21:33:05,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 496 transitions, 13276 flow [2022-12-12 21:33:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:33:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:33:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2022-12-12 21:33:05,346 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3247863247863248 [2022-12-12 21:33:05,347 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2022-12-12 21:33:05,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 496 transitions, 13276 flow [2022-12-12 21:33:05,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 197 transitions, 5039 flow [2022-12-12 21:33:05,384 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 197 transitions, 5039 flow [2022-12-12 21:33:05,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-12 21:33:05,385 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:33:05,385 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:33:05,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 21:33:05,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:33:05,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:33:05,385 INFO L85 PathProgramCache]: Analyzing trace with hash 646240702, now seen corresponding path program 2 times [2022-12-12 21:33:05,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:33:05,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211788488] [2022-12-12 21:33:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:33:05,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:33:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:33:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:33:06,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:33:06,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211788488] [2022-12-12 21:33:06,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211788488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:33:06,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:33:06,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:33:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342641889] [2022-12-12 21:33:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:33:06,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:33:06,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:33:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:33:06,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:33:06,197 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 78 [2022-12-12 21:33:06,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 197 transitions, 5039 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2022-12-12 21:33:06,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:33:06,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 78 [2022-12-12 21:33:06,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:33:07,235 INFO L130 PetriNetUnfolder]: 4906/8049 cut-off events. [2022-12-12 21:33:07,235 INFO L131 PetriNetUnfolder]: For 66465/67062 co-relation queries the response was YES. [2022-12-12 21:33:07,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102246 conditions, 8049 events. 4906/8049 cut-off events. For 66465/67062 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 51725 event pairs, 4 based on Foata normal form. 129/6396 useless extension candidates. Maximal degree in co-relation 102195. Up to 7449 conditions per place. [2022-12-12 21:33:07,279 INFO L137 encePairwiseOnDemand]: 72/78 looper letters, 182 selfloop transitions, 18 changer transitions 21/247 dead transitions. [2022-12-12 21:33:07,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 247 transitions, 6881 flow [2022-12-12 21:33:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:33:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:33:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2022-12-12 21:33:07,281 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34294871794871795 [2022-12-12 21:33:07,281 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2022-12-12 21:33:07,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 247 transitions, 6881 flow [2022-12-12 21:33:07,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 226 transitions, 6251 flow [2022-12-12 21:33:07,318 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 226 transitions, 6251 flow [2022-12-12 21:33:07,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2022-12-12 21:33:07,318 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:33:07,318 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:33:07,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 21:33:07,319 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:33:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:33:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1887808634, now seen corresponding path program 3 times [2022-12-12 21:33:07,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:33:07,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061636430] [2022-12-12 21:33:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:33:07,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:33:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:33:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:33:08,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:33:08,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061636430] [2022-12-12 21:33:08,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061636430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:33:08,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:33:08,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 21:33:08,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679181612] [2022-12-12 21:33:08,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:33:08,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 21:33:08,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:33:08,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 21:33:08,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-12 21:33:08,483 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 78 [2022-12-12 21:33:08,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 226 transitions, 6251 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 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) [2022-12-12 21:33:08,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:33:08,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 78 [2022-12-12 21:33:08,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:33:09,827 INFO L130 PetriNetUnfolder]: 5819/9578 cut-off events. [2022-12-12 21:33:09,827 INFO L131 PetriNetUnfolder]: For 82136/82766 co-relation queries the response was YES. [2022-12-12 21:33:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127062 conditions, 9578 events. 5819/9578 cut-off events. For 82136/82766 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 64273 event pairs, 4 based on Foata normal form. 189/7592 useless extension candidates. Maximal degree in co-relation 127008. Up to 8969 conditions per place. [2022-12-12 21:33:09,882 INFO L137 encePairwiseOnDemand]: 72/78 looper letters, 185 selfloop transitions, 41 changer transitions 35/287 dead transitions. [2022-12-12 21:33:09,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 287 transitions, 8591 flow [2022-12-12 21:33:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:33:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:33:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2022-12-12 21:33:09,883 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2022-12-12 21:33:09,884 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-12-12 21:33:09,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 287 transitions, 8591 flow [2022-12-12 21:33:09,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 252 transitions, 7468 flow [2022-12-12 21:33:09,926 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 252 transitions, 7468 flow [2022-12-12 21:33:09,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 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) [2022-12-12 21:33:09,926 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:33:09,926 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:33:09,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-12 21:33:09,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:33:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:33:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash -941607988, now seen corresponding path program 1 times [2022-12-12 21:33:09,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:33:09,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441203955] [2022-12-12 21:33:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:33:09,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:33:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:33:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:33:10,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:33:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441203955] [2022-12-12 21:33:10,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441203955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:33:10,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:33:10,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 21:33:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712406317] [2022-12-12 21:33:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:33:10,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 21:33:10,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:33:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 21:33:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-12 21:33:10,946 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 78 [2022-12-12 21:33:10,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 252 transitions, 7468 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:33:10,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:33:10,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 78 [2022-12-12 21:33:10,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:33:12,643 INFO L130 PetriNetUnfolder]: 6515/10722 cut-off events. [2022-12-12 21:33:12,644 INFO L131 PetriNetUnfolder]: For 107333/108350 co-relation queries the response was YES. [2022-12-12 21:33:12,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148774 conditions, 10722 events. 6515/10722 cut-off events. For 107333/108350 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 74690 event pairs, 2 based on Foata normal form. 290/8474 useless extension candidates. Maximal degree in co-relation 148717. Up to 10177 conditions per place. [2022-12-12 21:33:12,713 INFO L137 encePairwiseOnDemand]: 72/78 looper letters, 232 selfloop transitions, 31 changer transitions 22/311 dead transitions. [2022-12-12 21:33:12,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 311 transitions, 9920 flow [2022-12-12 21:33:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:33:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:33:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2022-12-12 21:33:12,719 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2022-12-12 21:33:12,719 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2022-12-12 21:33:12,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 311 transitions, 9920 flow [2022-12-12 21:33:12,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 289 transitions, 9172 flow [2022-12-12 21:33:12,768 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 289 transitions, 9172 flow [2022-12-12 21:33:12,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:33:12,768 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:33:12,768 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:33:12,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 21:33:12,768 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:33:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:33:12,769 INFO L85 PathProgramCache]: Analyzing trace with hash 121135526, now seen corresponding path program 4 times [2022-12-12 21:33:12,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:33:12,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800634698] [2022-12-12 21:33:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:33:12,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:33:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:33:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:33:14,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:33:14,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800634698] [2022-12-12 21:33:14,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800634698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:33:14,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:33:14,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 21:33:14,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011233931] [2022-12-12 21:33:14,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:33:14,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 21:33:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:33:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 21:33:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-12 21:33:14,087 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 78 [2022-12-12 21:33:14,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 289 transitions, 9172 flow. Second operand has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 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) [2022-12-12 21:33:14,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:33:14,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 78 [2022-12-12 21:33:14,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand