/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:21:27,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:21:27,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:21:27,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:21:27,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:21:27,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:21:27,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:21:27,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:21:27,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:21:27,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:21:27,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:21:27,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:21:27,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:21:27,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:21:27,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:21:27,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:21:27,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:21:27,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:21:27,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:21:27,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:21:27,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:21:27,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:21:27,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:21:27,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:21:27,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:21:27,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:21:27,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:21:27,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:21:27,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:21:27,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:21:27,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:21:27,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:21:27,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:21:27,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:21:27,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:21:27,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:21:27,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:21:27,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:21:27,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:21:27,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:21:27,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:21:27,262 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 [2022-12-05 21:21:27,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:21:27,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:21:27,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:21:27,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:21:27,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:21:27,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:21:27,287 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:21:27,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:21:27,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:21:27,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:21:27,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:21:27,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:21:27,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:21:27,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:21:27,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:21:27,292 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:21:27,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:21:27,292 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:21:27,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:21:27,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:21:27,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:21:27,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:21:27,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:21:27,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:21:27,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:21:27,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:21:27,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:21:27,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:21:27,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:21:27,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:21:27,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:21:27,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:21:27,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:21:27,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:21:27,593 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:21:27,595 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:21:27,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2022-12-05 21:21:28,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:21:28,698 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:21:28,698 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2022-12-05 21:21:28,702 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faf407f8c/f8f8a229612d4f13aa9cc45796df649e/FLAG22336f534 [2022-12-05 21:21:28,712 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faf407f8c/f8f8a229612d4f13aa9cc45796df649e [2022-12-05 21:21:28,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:21:28,716 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:21:28,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:21:28,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:21:28,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:21:28,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:28,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63240bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28, skipping insertion in model container [2022-12-05 21:21:28,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:28,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:21:28,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:21:28,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,851 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,851 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,872 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-12-05 21:21:28,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:21:28,890 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:21:28,902 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,902 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,902 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,903 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,903 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,903 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,903 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,907 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,910 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,910 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:28,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:28,931 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-12-05 21:21:28,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:21:28,943 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:21:28,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28 WrapperNode [2022-12-05 21:21:28,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:21:28,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:21:28,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:21:28,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:21:28,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:28,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:28,988 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-12-05 21:21:28,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:21:28,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:21:28,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:21:28,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:21:28,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:28,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:29,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:29,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:29,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:29,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:29,018 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:29,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:29,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:21:29,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:21:29,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:21:29,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:21:29,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (1/1) ... [2022-12-05 21:21:29,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:21:29,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:21:29,050 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) [2022-12-05 21:21:29,075 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 [2022-12-05 21:21:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:21:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:21:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:21:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:21:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:21:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:21:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:21:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 21:21:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 21:21:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:21:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:21:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:21:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:21:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:21:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:21:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:21:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:21:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:21:29,090 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:21:29,217 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:21:29,219 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:21:29,426 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:21:29,483 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:21:29,483 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 21:21:29,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:21:29 BoogieIcfgContainer [2022-12-05 21:21:29,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:21:29,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:21:29,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:21:29,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:21:29,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:21:28" (1/3) ... [2022-12-05 21:21:29,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2249c4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:21:29, skipping insertion in model container [2022-12-05 21:21:29,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:28" (2/3) ... [2022-12-05 21:21:29,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2249c4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:21:29, skipping insertion in model container [2022-12-05 21:21:29,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:21:29" (3/3) ... [2022-12-05 21:21:29,499 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-12-05 21:21:29,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:21:29,515 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:21:29,515 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:21:29,608 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-05 21:21:29,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2022-12-05 21:21:29,683 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-12-05 21:21:29,684 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:21:29,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 2/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2022-12-05 21:21:29,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 302 flow [2022-12-05 21:21:29,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 119 transitions, 262 flow [2022-12-05 21:21:29,691 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:21:29,702 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 262 flow [2022-12-05 21:21:29,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 262 flow [2022-12-05 21:21:29,744 INFO L130 PetriNetUnfolder]: 2/119 cut-off events. [2022-12-05 21:21:29,744 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:21:29,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2022-12-05 21:21:29,746 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 262 flow [2022-12-05 21:21:29,746 INFO L188 LiptonReduction]: Number of co-enabled transitions 1302 [2022-12-05 21:21:34,018 INFO L203 LiptonReduction]: Total number of compositions: 93 [2022-12-05 21:21:34,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:21:34,033 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7db68dd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:21:34,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 21:21:34,037 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2022-12-05 21:21:34,037 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:21:34,038 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:34,038 INFO L213 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] [2022-12-05 21:21:34,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:34,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash -365016010, now seen corresponding path program 1 times [2022-12-05 21:21:34,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:34,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618972137] [2022-12-05 21:21:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:34,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:34,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:34,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618972137] [2022-12-05 21:21:34,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618972137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:34,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:34,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:21:34,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924356964] [2022-12-05 21:21:34,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:34,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 21:21:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 21:21:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-05 21:21:34,792 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:34,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 76 flow. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-05 21:21:34,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:34,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:34,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:35,084 INFO L130 PetriNetUnfolder]: 1049/1613 cut-off events. [2022-12-05 21:21:35,085 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-12-05 21:21:35,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3434 conditions, 1613 events. 1049/1613 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6826 event pairs, 235 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 2616. Up to 674 conditions per place. [2022-12-05 21:21:35,096 INFO L137 encePairwiseOnDemand]: 19/26 looper letters, 62 selfloop transitions, 12 changer transitions 11/85 dead transitions. [2022-12-05 21:21:35,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 85 transitions, 406 flow [2022-12-05 21:21:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:21:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:21:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2022-12-05 21:21:35,107 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2022-12-05 21:21:35,108 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 76 flow. Second operand 6 states and 86 transitions. [2022-12-05 21:21:35,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 85 transitions, 406 flow [2022-12-05 21:21:35,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 85 transitions, 362 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 21:21:35,117 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 140 flow [2022-12-05 21:21:35,119 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2022-12-05 21:21:35,122 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2022-12-05 21:21:35,122 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 140 flow [2022-12-05 21:21:35,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-05 21:21:35,122 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:35,122 INFO L213 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] [2022-12-05 21:21:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:21:35,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash 940738958, now seen corresponding path program 2 times [2022-12-05 21:21:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:35,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980823497] [2022-12-05 21:21:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:35,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:35,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:35,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980823497] [2022-12-05 21:21:35,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980823497] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:35,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:35,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:21:35,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824748418] [2022-12-05 21:21:35,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:35,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 21:21:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:35,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 21:21:35,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 21:21:35,255 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:35,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-05 21:21:35,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:35,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:35,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:35,439 INFO L130 PetriNetUnfolder]: 816/1265 cut-off events. [2022-12-05 21:21:35,439 INFO L131 PetriNetUnfolder]: For 581/581 co-relation queries the response was YES. [2022-12-05 21:21:35,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 1265 events. 816/1265 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5142 event pairs, 172 based on Foata normal form. 28/1293 useless extension candidates. Maximal degree in co-relation 2029. Up to 1107 conditions per place. [2022-12-05 21:21:35,445 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 61 selfloop transitions, 14 changer transitions 0/75 dead transitions. [2022-12-05 21:21:35,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 75 transitions, 399 flow [2022-12-05 21:21:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:21:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:21:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2022-12-05 21:21:35,446 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2022-12-05 21:21:35,447 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 140 flow. Second operand 5 states and 59 transitions. [2022-12-05 21:21:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 75 transitions, 399 flow [2022-12-05 21:21:35,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 389 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 21:21:35,451 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 238 flow [2022-12-05 21:21:35,451 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2022-12-05 21:21:35,452 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2022-12-05 21:21:35,452 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 238 flow [2022-12-05 21:21:35,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-05 21:21:35,452 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:35,452 INFO L213 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] [2022-12-05 21:21:35,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 21:21:35,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash 364602806, now seen corresponding path program 3 times [2022-12-05 21:21:35,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:35,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475330092] [2022-12-05 21:21:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:35,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:35,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:35,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475330092] [2022-12-05 21:21:35,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475330092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:35,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:35,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:21:35,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978694909] [2022-12-05 21:21:35,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:35,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 21:21:35,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:35,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 21:21:35,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 21:21:35,621 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:35,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-05 21:21:35,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:35,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:35,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:35,810 INFO L130 PetriNetUnfolder]: 841/1314 cut-off events. [2022-12-05 21:21:35,810 INFO L131 PetriNetUnfolder]: For 1067/1067 co-relation queries the response was YES. [2022-12-05 21:21:35,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3995 conditions, 1314 events. 841/1314 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5559 event pairs, 80 based on Foata normal form. 48/1362 useless extension candidates. Maximal degree in co-relation 2646. Up to 946 conditions per place. [2022-12-05 21:21:35,818 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 68 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2022-12-05 21:21:35,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 93 transitions, 565 flow [2022-12-05 21:21:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:21:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:21:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2022-12-05 21:21:35,822 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2022-12-05 21:21:35,822 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 238 flow. Second operand 7 states and 78 transitions. [2022-12-05 21:21:35,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 93 transitions, 565 flow [2022-12-05 21:21:35,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 93 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 21:21:35,835 INFO L231 Difference]: Finished difference. Result has 50 places, 58 transitions, 324 flow [2022-12-05 21:21:35,835 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=50, PETRI_TRANSITIONS=58} [2022-12-05 21:21:35,836 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2022-12-05 21:21:35,836 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 58 transitions, 324 flow [2022-12-05 21:21:35,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-05 21:21:35,836 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:35,836 INFO L213 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] [2022-12-05 21:21:35,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:21:35,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:35,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:35,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1975724184, now seen corresponding path program 4 times [2022-12-05 21:21:35,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:35,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207610744] [2022-12-05 21:21:35,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:35,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:36,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:36,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207610744] [2022-12-05 21:21:36,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207610744] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:36,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:36,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:21:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955050930] [2022-12-05 21:21:36,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:36,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:21:36,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:21:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:21:36,008 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:36,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 58 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:36,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:36,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:36,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:36,347 INFO L130 PetriNetUnfolder]: 1386/2221 cut-off events. [2022-12-05 21:21:36,347 INFO L131 PetriNetUnfolder]: For 2252/2252 co-relation queries the response was YES. [2022-12-05 21:21:36,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6938 conditions, 2221 events. 1386/2221 cut-off events. For 2252/2252 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11076 event pairs, 184 based on Foata normal form. 84/2305 useless extension candidates. Maximal degree in co-relation 4041. Up to 962 conditions per place. [2022-12-05 21:21:36,362 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 74 selfloop transitions, 56 changer transitions 25/155 dead transitions. [2022-12-05 21:21:36,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 155 transitions, 990 flow [2022-12-05 21:21:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:21:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:21:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2022-12-05 21:21:36,366 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2022-12-05 21:21:36,366 INFO L175 Difference]: Start difference. First operand has 50 places, 58 transitions, 324 flow. Second operand 9 states and 111 transitions. [2022-12-05 21:21:36,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 155 transitions, 990 flow [2022-12-05 21:21:36,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 155 transitions, 964 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-05 21:21:36,382 INFO L231 Difference]: Finished difference. Result has 57 places, 89 transitions, 633 flow [2022-12-05 21:21:36,383 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=633, PETRI_PLACES=57, PETRI_TRANSITIONS=89} [2022-12-05 21:21:36,384 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2022-12-05 21:21:36,384 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 89 transitions, 633 flow [2022-12-05 21:21:36,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:36,384 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:36,384 INFO L213 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] [2022-12-05 21:21:36,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 21:21:36,385 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash -635434264, now seen corresponding path program 5 times [2022-12-05 21:21:36,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:36,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527302940] [2022-12-05 21:21:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:36,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:36,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527302940] [2022-12-05 21:21:36,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527302940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:36,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:36,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:21:36,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808909327] [2022-12-05 21:21:36,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:36,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:21:36,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:36,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:21:36,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:21:36,576 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:36,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 89 transitions, 633 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:36,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:36,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:36,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:36,989 INFO L130 PetriNetUnfolder]: 1459/2404 cut-off events. [2022-12-05 21:21:36,989 INFO L131 PetriNetUnfolder]: For 3315/3315 co-relation queries the response was YES. [2022-12-05 21:21:36,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9413 conditions, 2404 events. 1459/2404 cut-off events. For 3315/3315 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12825 event pairs, 122 based on Foata normal form. 44/2448 useless extension candidates. Maximal degree in co-relation 5784. Up to 817 conditions per place. [2022-12-05 21:21:37,006 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 87 selfloop transitions, 97 changer transitions 6/190 dead transitions. [2022-12-05 21:21:37,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 190 transitions, 1544 flow [2022-12-05 21:21:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:21:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:21:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2022-12-05 21:21:37,008 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2022-12-05 21:21:37,008 INFO L175 Difference]: Start difference. First operand has 57 places, 89 transitions, 633 flow. Second operand 8 states and 100 transitions. [2022-12-05 21:21:37,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 190 transitions, 1544 flow [2022-12-05 21:21:37,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 190 transitions, 1506 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-12-05 21:21:37,034 INFO L231 Difference]: Finished difference. Result has 57 places, 130 transitions, 1213 flow [2022-12-05 21:21:37,034 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1213, PETRI_PLACES=57, PETRI_TRANSITIONS=130} [2022-12-05 21:21:37,036 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2022-12-05 21:21:37,036 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 130 transitions, 1213 flow [2022-12-05 21:21:37,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:37,036 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:37,036 INFO L213 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] [2022-12-05 21:21:37,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 21:21:37,036 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:37,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash 347460066, now seen corresponding path program 6 times [2022-12-05 21:21:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:37,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253008666] [2022-12-05 21:21:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:37,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:37,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:37,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253008666] [2022-12-05 21:21:37,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253008666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:37,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:37,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:21:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245764450] [2022-12-05 21:21:37,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:37,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:21:37,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:21:37,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:21:37,224 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:37,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 130 transitions, 1213 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:37,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:37,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:37,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:37,551 INFO L130 PetriNetUnfolder]: 1560/2587 cut-off events. [2022-12-05 21:21:37,552 INFO L131 PetriNetUnfolder]: For 6019/6019 co-relation queries the response was YES. [2022-12-05 21:21:37,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12081 conditions, 2587 events. 1560/2587 cut-off events. For 6019/6019 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 14255 event pairs, 154 based on Foata normal form. 26/2613 useless extension candidates. Maximal degree in co-relation 8162. Up to 2136 conditions per place. [2022-12-05 21:21:37,568 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 139 selfloop transitions, 59 changer transitions 1/199 dead transitions. [2022-12-05 21:21:37,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 199 transitions, 2053 flow [2022-12-05 21:21:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:21:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:21:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2022-12-05 21:21:37,570 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.40865384615384615 [2022-12-05 21:21:37,570 INFO L175 Difference]: Start difference. First operand has 57 places, 130 transitions, 1213 flow. Second operand 8 states and 85 transitions. [2022-12-05 21:21:37,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 199 transitions, 2053 flow [2022-12-05 21:21:37,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 199 transitions, 2033 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-12-05 21:21:37,609 INFO L231 Difference]: Finished difference. Result has 66 places, 155 transitions, 1685 flow [2022-12-05 21:21:37,609 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1685, PETRI_PLACES=66, PETRI_TRANSITIONS=155} [2022-12-05 21:21:37,611 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2022-12-05 21:21:37,611 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 155 transitions, 1685 flow [2022-12-05 21:21:37,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:37,611 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:37,611 INFO L213 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] [2022-12-05 21:21:37,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 21:21:37,612 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:37,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1620917726, now seen corresponding path program 7 times [2022-12-05 21:21:37,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:37,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404632949] [2022-12-05 21:21:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:37,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:37,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:37,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404632949] [2022-12-05 21:21:37,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404632949] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:37,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:37,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:21:37,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225833580] [2022-12-05 21:21:37,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:37,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:21:37,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:21:37,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:21:37,753 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:37,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 155 transitions, 1685 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:37,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:37,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:37,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:38,063 INFO L130 PetriNetUnfolder]: 1552/2583 cut-off events. [2022-12-05 21:21:38,063 INFO L131 PetriNetUnfolder]: For 8002/8002 co-relation queries the response was YES. [2022-12-05 21:21:38,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12901 conditions, 2583 events. 1552/2583 cut-off events. For 8002/8002 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 14443 event pairs, 160 based on Foata normal form. 28/2611 useless extension candidates. Maximal degree in co-relation 10254. Up to 891 conditions per place. [2022-12-05 21:21:38,079 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 81 selfloop transitions, 131 changer transitions 3/215 dead transitions. [2022-12-05 21:21:38,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 215 transitions, 2447 flow [2022-12-05 21:21:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:21:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:21:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2022-12-05 21:21:38,080 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2022-12-05 21:21:38,080 INFO L175 Difference]: Start difference. First operand has 66 places, 155 transitions, 1685 flow. Second operand 8 states and 96 transitions. [2022-12-05 21:21:38,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 215 transitions, 2447 flow [2022-12-05 21:21:38,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 215 transitions, 2424 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 21:21:38,100 INFO L231 Difference]: Finished difference. Result has 71 places, 169 transitions, 2159 flow [2022-12-05 21:21:38,100 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1664, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2159, PETRI_PLACES=71, PETRI_TRANSITIONS=169} [2022-12-05 21:21:38,100 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2022-12-05 21:21:38,100 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 169 transitions, 2159 flow [2022-12-05 21:21:38,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:38,101 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:38,101 INFO L213 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] [2022-12-05 21:21:38,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 21:21:38,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:38,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1109600844, now seen corresponding path program 8 times [2022-12-05 21:21:38,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:38,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937062728] [2022-12-05 21:21:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:38,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:38,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:38,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937062728] [2022-12-05 21:21:38,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937062728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:38,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:38,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:21:38,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363584359] [2022-12-05 21:21:38,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:38,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:21:38,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:21:38,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:21:38,227 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:38,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 169 transitions, 2159 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-12-05 21:21:38,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:38,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:38,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:38,486 INFO L130 PetriNetUnfolder]: 1419/2372 cut-off events. [2022-12-05 21:21:38,486 INFO L131 PetriNetUnfolder]: For 8911/8911 co-relation queries the response was YES. [2022-12-05 21:21:38,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13285 conditions, 2372 events. 1419/2372 cut-off events. For 8911/8911 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 13090 event pairs, 184 based on Foata normal form. 14/2386 useless extension candidates. Maximal degree in co-relation 10904. Up to 2304 conditions per place. [2022-12-05 21:21:38,501 INFO L137 encePairwiseOnDemand]: 19/26 looper letters, 164 selfloop transitions, 13 changer transitions 0/177 dead transitions. [2022-12-05 21:21:38,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 177 transitions, 2407 flow [2022-12-05 21:21:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:21:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:21:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2022-12-05 21:21:38,502 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-05 21:21:38,502 INFO L175 Difference]: Start difference. First operand has 71 places, 169 transitions, 2159 flow. Second operand 5 states and 52 transitions. [2022-12-05 21:21:38,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 177 transitions, 2407 flow [2022-12-05 21:21:38,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 177 transitions, 2259 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-05 21:21:38,525 INFO L231 Difference]: Finished difference. Result has 74 places, 160 transitions, 1893 flow [2022-12-05 21:21:38,525 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1893, PETRI_PLACES=74, PETRI_TRANSITIONS=160} [2022-12-05 21:21:38,525 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 35 predicate places. [2022-12-05 21:21:38,526 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 160 transitions, 1893 flow [2022-12-05 21:21:38,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-12-05 21:21:38,526 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:38,526 INFO L213 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] [2022-12-05 21:21:38,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 21:21:38,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 272703906, now seen corresponding path program 9 times [2022-12-05 21:21:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:38,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90891128] [2022-12-05 21:21:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:38,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:38,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90891128] [2022-12-05 21:21:38,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90891128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:38,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:38,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:21:38,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239983858] [2022-12-05 21:21:38,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:38,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:21:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:21:38,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:21:38,667 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:38,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 160 transitions, 1893 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:38,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:38,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:38,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:38,983 INFO L130 PetriNetUnfolder]: 1445/2428 cut-off events. [2022-12-05 21:21:38,984 INFO L131 PetriNetUnfolder]: For 9016/9016 co-relation queries the response was YES. [2022-12-05 21:21:38,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12966 conditions, 2428 events. 1445/2428 cut-off events. For 9016/9016 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13672 event pairs, 184 based on Foata normal form. 22/2450 useless extension candidates. Maximal degree in co-relation 10807. Up to 2314 conditions per place. [2022-12-05 21:21:38,998 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 173 selfloop transitions, 21 changer transitions 4/198 dead transitions. [2022-12-05 21:21:38,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 198 transitions, 2523 flow [2022-12-05 21:21:38,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:21:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:21:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2022-12-05 21:21:38,999 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2022-12-05 21:21:39,000 INFO L175 Difference]: Start difference. First operand has 74 places, 160 transitions, 1893 flow. Second operand 8 states and 72 transitions. [2022-12-05 21:21:39,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 198 transitions, 2523 flow [2022-12-05 21:21:39,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 198 transitions, 2500 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 21:21:39,022 INFO L231 Difference]: Finished difference. Result has 80 places, 166 transitions, 2037 flow [2022-12-05 21:21:39,023 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2037, PETRI_PLACES=80, PETRI_TRANSITIONS=166} [2022-12-05 21:21:39,023 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2022-12-05 21:21:39,024 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 166 transitions, 2037 flow [2022-12-05 21:21:39,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:39,024 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:39,024 INFO L213 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] [2022-12-05 21:21:39,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 21:21:39,024 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:39,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1942032804, now seen corresponding path program 10 times [2022-12-05 21:21:39,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:39,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258895059] [2022-12-05 21:21:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:39,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:39,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:39,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258895059] [2022-12-05 21:21:39,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258895059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:39,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:39,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:21:39,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057632475] [2022-12-05 21:21:39,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:39,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:21:39,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:39,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:21:39,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:21:39,192 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:39,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 166 transitions, 2037 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:39,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:39,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:39,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:39,517 INFO L130 PetriNetUnfolder]: 1433/2420 cut-off events. [2022-12-05 21:21:39,517 INFO L131 PetriNetUnfolder]: For 9543/9543 co-relation queries the response was YES. [2022-12-05 21:21:39,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12979 conditions, 2420 events. 1433/2420 cut-off events. For 9543/9543 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13676 event pairs, 190 based on Foata normal form. 22/2442 useless extension candidates. Maximal degree in co-relation 11387. Up to 2304 conditions per place. [2022-12-05 21:21:39,530 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 168 selfloop transitions, 20 changer transitions 9/197 dead transitions. [2022-12-05 21:21:39,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 197 transitions, 2651 flow [2022-12-05 21:21:39,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:21:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:21:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-12-05 21:21:39,532 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3173076923076923 [2022-12-05 21:21:39,532 INFO L175 Difference]: Start difference. First operand has 80 places, 166 transitions, 2037 flow. Second operand 8 states and 66 transitions. [2022-12-05 21:21:39,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 197 transitions, 2651 flow [2022-12-05 21:21:39,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 197 transitions, 2604 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-05 21:21:39,561 INFO L231 Difference]: Finished difference. Result has 83 places, 168 transitions, 2102 flow [2022-12-05 21:21:39,561 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2102, PETRI_PLACES=83, PETRI_TRANSITIONS=168} [2022-12-05 21:21:39,562 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2022-12-05 21:21:39,562 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 168 transitions, 2102 flow [2022-12-05 21:21:39,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:39,562 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:39,562 INFO L213 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] [2022-12-05 21:21:39,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 21:21:39,562 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1951870196, now seen corresponding path program 11 times [2022-12-05 21:21:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:39,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746945173] [2022-12-05 21:21:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:39,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:39,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:39,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746945173] [2022-12-05 21:21:39,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746945173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:39,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:39,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 21:21:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732534862] [2022-12-05 21:21:39,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:39,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 21:21:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 21:21:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-05 21:21:39,703 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:39,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 168 transitions, 2102 flow. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-12-05 21:21:39,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:39,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:39,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:40,061 INFO L130 PetriNetUnfolder]: 1082/1993 cut-off events. [2022-12-05 21:21:40,061 INFO L131 PetriNetUnfolder]: For 6486/6486 co-relation queries the response was YES. [2022-12-05 21:21:40,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10263 conditions, 1993 events. 1082/1993 cut-off events. For 6486/6486 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 11890 event pairs, 12 based on Foata normal form. 118/2111 useless extension candidates. Maximal degree in co-relation 10023. Up to 789 conditions per place. [2022-12-05 21:21:40,071 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 83 selfloop transitions, 158 changer transitions 8/249 dead transitions. [2022-12-05 21:21:40,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 249 transitions, 2990 flow [2022-12-05 21:21:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:21:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:21:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2022-12-05 21:21:40,072 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2022-12-05 21:21:40,072 INFO L175 Difference]: Start difference. First operand has 83 places, 168 transitions, 2102 flow. Second operand 10 states and 115 transitions. [2022-12-05 21:21:40,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 249 transitions, 2990 flow [2022-12-05 21:21:40,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 249 transitions, 2892 flow, removed 10 selfloop flow, removed 10 redundant places. [2022-12-05 21:21:40,101 INFO L231 Difference]: Finished difference. Result has 84 places, 189 transitions, 2702 flow [2022-12-05 21:21:40,101 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2702, PETRI_PLACES=84, PETRI_TRANSITIONS=189} [2022-12-05 21:21:40,102 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2022-12-05 21:21:40,102 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 189 transitions, 2702 flow [2022-12-05 21:21:40,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-12-05 21:21:40,102 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:40,102 INFO L213 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] [2022-12-05 21:21:40,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 21:21:40,102 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:40,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:40,103 INFO L85 PathProgramCache]: Analyzing trace with hash 586695180, now seen corresponding path program 12 times [2022-12-05 21:21:40,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:40,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351607222] [2022-12-05 21:21:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:40,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:40,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:40,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351607222] [2022-12-05 21:21:40,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351607222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:40,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:40,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:40,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593264258] [2022-12-05 21:21:40,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:40,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:40,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:40,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:40,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:40,245 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:40,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 189 transitions, 2702 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:40,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:40,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:40,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:40,649 INFO L130 PetriNetUnfolder]: 1118/2089 cut-off events. [2022-12-05 21:21:40,649 INFO L131 PetriNetUnfolder]: For 9542/9542 co-relation queries the response was YES. [2022-12-05 21:21:40,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13135 conditions, 2089 events. 1118/2089 cut-off events. For 9542/9542 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12898 event pairs, 12 based on Foata normal form. 58/2147 useless extension candidates. Maximal degree in co-relation 12175. Up to 748 conditions per place. [2022-12-05 21:21:40,660 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 92 selfloop transitions, 170 changer transitions 19/281 dead transitions. [2022-12-05 21:21:40,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 281 transitions, 4009 flow [2022-12-05 21:21:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 21:21:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 21:21:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2022-12-05 21:21:40,662 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42948717948717946 [2022-12-05 21:21:40,662 INFO L175 Difference]: Start difference. First operand has 84 places, 189 transitions, 2702 flow. Second operand 12 states and 134 transitions. [2022-12-05 21:21:40,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 281 transitions, 4009 flow [2022-12-05 21:21:40,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 281 transitions, 3866 flow, removed 56 selfloop flow, removed 6 redundant places. [2022-12-05 21:21:40,708 INFO L231 Difference]: Finished difference. Result has 91 places, 201 transitions, 3167 flow [2022-12-05 21:21:40,708 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3167, PETRI_PLACES=91, PETRI_TRANSITIONS=201} [2022-12-05 21:21:40,708 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 52 predicate places. [2022-12-05 21:21:40,709 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 201 transitions, 3167 flow [2022-12-05 21:21:40,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:40,709 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:40,709 INFO L213 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] [2022-12-05 21:21:40,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 21:21:40,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash -234802398, now seen corresponding path program 13 times [2022-12-05 21:21:40,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:40,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769629296] [2022-12-05 21:21:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:40,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:40,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769629296] [2022-12-05 21:21:40,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769629296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:40,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:40,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 21:21:40,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726637957] [2022-12-05 21:21:40,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:40,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 21:21:40,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:40,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 21:21:40,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-05 21:21:40,879 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:40,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 201 transitions, 3167 flow. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-12-05 21:21:40,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:40,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:40,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:41,275 INFO L130 PetriNetUnfolder]: 1070/2025 cut-off events. [2022-12-05 21:21:41,276 INFO L131 PetriNetUnfolder]: For 10690/10690 co-relation queries the response was YES. [2022-12-05 21:21:41,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13714 conditions, 2025 events. 1070/2025 cut-off events. For 10690/10690 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 12628 event pairs, 18 based on Foata normal form. 6/2031 useless extension candidates. Maximal degree in co-relation 12717. Up to 791 conditions per place. [2022-12-05 21:21:41,286 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 75 selfloop transitions, 167 changer transitions 5/247 dead transitions. [2022-12-05 21:21:41,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 247 transitions, 3820 flow [2022-12-05 21:21:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:21:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:21:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2022-12-05 21:21:41,288 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2022-12-05 21:21:41,288 INFO L175 Difference]: Start difference. First operand has 91 places, 201 transitions, 3167 flow. Second operand 10 states and 111 transitions. [2022-12-05 21:21:41,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 247 transitions, 3820 flow [2022-12-05 21:21:41,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 247 transitions, 3570 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-12-05 21:21:41,324 INFO L231 Difference]: Finished difference. Result has 93 places, 197 transitions, 3189 flow [2022-12-05 21:21:41,325 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3189, PETRI_PLACES=93, PETRI_TRANSITIONS=197} [2022-12-05 21:21:41,325 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 54 predicate places. [2022-12-05 21:21:41,325 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 197 transitions, 3189 flow [2022-12-05 21:21:41,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-12-05 21:21:41,325 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:41,325 INFO L213 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] [2022-12-05 21:21:41,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 21:21:41,326 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash 322684626, now seen corresponding path program 14 times [2022-12-05 21:21:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:41,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671611538] [2022-12-05 21:21:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:41,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:41,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671611538] [2022-12-05 21:21:41,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671611538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:41,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:41,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:41,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183398382] [2022-12-05 21:21:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:41,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:41,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:41,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:41,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:41,504 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:41,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 197 transitions, 3189 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:41,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:41,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:41,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:42,001 INFO L130 PetriNetUnfolder]: 1078/2069 cut-off events. [2022-12-05 21:21:42,002 INFO L131 PetriNetUnfolder]: For 12195/12195 co-relation queries the response was YES. [2022-12-05 21:21:42,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14214 conditions, 2069 events. 1078/2069 cut-off events. For 12195/12195 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13154 event pairs, 24 based on Foata normal form. 38/2107 useless extension candidates. Maximal degree in co-relation 13380. Up to 757 conditions per place. [2022-12-05 21:21:42,014 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 83 selfloop transitions, 178 changer transitions 12/273 dead transitions. [2022-12-05 21:21:42,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 273 transitions, 4359 flow [2022-12-05 21:21:42,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 21:21:42,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 21:21:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2022-12-05 21:21:42,016 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.378698224852071 [2022-12-05 21:21:42,016 INFO L175 Difference]: Start difference. First operand has 93 places, 197 transitions, 3189 flow. Second operand 13 states and 128 transitions. [2022-12-05 21:21:42,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 273 transitions, 4359 flow [2022-12-05 21:21:42,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 273 transitions, 3989 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-12-05 21:21:42,058 INFO L231 Difference]: Finished difference. Result has 97 places, 208 transitions, 3388 flow [2022-12-05 21:21:42,058 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2853, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3388, PETRI_PLACES=97, PETRI_TRANSITIONS=208} [2022-12-05 21:21:42,058 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 58 predicate places. [2022-12-05 21:21:42,058 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 208 transitions, 3388 flow [2022-12-05 21:21:42,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:42,059 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:42,059 INFO L213 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] [2022-12-05 21:21:42,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 21:21:42,059 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:42,059 INFO L85 PathProgramCache]: Analyzing trace with hash -267454318, now seen corresponding path program 15 times [2022-12-05 21:21:42,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:42,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213568245] [2022-12-05 21:21:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:42,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213568245] [2022-12-05 21:21:42,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213568245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:42,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:42,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680525490] [2022-12-05 21:21:42,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:42,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:42,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:42,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:42,295 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:42,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 208 transitions, 3388 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:42,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:42,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:42,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:42,700 INFO L130 PetriNetUnfolder]: 987/1944 cut-off events. [2022-12-05 21:21:42,700 INFO L131 PetriNetUnfolder]: For 12278/12278 co-relation queries the response was YES. [2022-12-05 21:21:42,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13217 conditions, 1944 events. 987/1944 cut-off events. For 12278/12278 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 12652 event pairs, 28 based on Foata normal form. 66/2010 useless extension candidates. Maximal degree in co-relation 12468. Up to 702 conditions per place. [2022-12-05 21:21:42,712 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 78 selfloop transitions, 173 changer transitions 27/278 dead transitions. [2022-12-05 21:21:42,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 278 transitions, 4476 flow [2022-12-05 21:21:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 21:21:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 21:21:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2022-12-05 21:21:42,714 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.378698224852071 [2022-12-05 21:21:42,714 INFO L175 Difference]: Start difference. First operand has 97 places, 208 transitions, 3388 flow. Second operand 13 states and 128 transitions. [2022-12-05 21:21:42,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 278 transitions, 4476 flow [2022-12-05 21:21:42,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 278 transitions, 4297 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-12-05 21:21:42,751 INFO L231 Difference]: Finished difference. Result has 100 places, 201 transitions, 3479 flow [2022-12-05 21:21:42,752 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3079, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3479, PETRI_PLACES=100, PETRI_TRANSITIONS=201} [2022-12-05 21:21:42,752 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2022-12-05 21:21:42,752 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 201 transitions, 3479 flow [2022-12-05 21:21:42,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:42,752 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:42,752 INFO L213 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] [2022-12-05 21:21:42,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-05 21:21:42,753 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1558573010, now seen corresponding path program 16 times [2022-12-05 21:21:42,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:42,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422329128] [2022-12-05 21:21:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:42,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:42,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422329128] [2022-12-05 21:21:42,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422329128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:42,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:42,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797336787] [2022-12-05 21:21:42,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:42,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:42,912 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:42,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 201 transitions, 3479 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:42,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:42,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:42,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:43,204 INFO L130 PetriNetUnfolder]: 755/1472 cut-off events. [2022-12-05 21:21:43,204 INFO L131 PetriNetUnfolder]: For 11686/11686 co-relation queries the response was YES. [2022-12-05 21:21:43,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10268 conditions, 1472 events. 755/1472 cut-off events. For 11686/11686 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8587 event pairs, 58 based on Foata normal form. 2/1474 useless extension candidates. Maximal degree in co-relation 9816. Up to 726 conditions per place. [2022-12-05 21:21:43,213 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 117 selfloop transitions, 133 changer transitions 3/253 dead transitions. [2022-12-05 21:21:43,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 253 transitions, 4343 flow [2022-12-05 21:21:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 21:21:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 21:21:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2022-12-05 21:21:43,214 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.32867132867132864 [2022-12-05 21:21:43,214 INFO L175 Difference]: Start difference. First operand has 100 places, 201 transitions, 3479 flow. Second operand 11 states and 94 transitions. [2022-12-05 21:21:43,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 253 transitions, 4343 flow [2022-12-05 21:21:43,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 253 transitions, 4216 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-12-05 21:21:43,242 INFO L231 Difference]: Finished difference. Result has 105 places, 214 transitions, 4020 flow [2022-12-05 21:21:43,242 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4020, PETRI_PLACES=105, PETRI_TRANSITIONS=214} [2022-12-05 21:21:43,243 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2022-12-05 21:21:43,243 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 214 transitions, 4020 flow [2022-12-05 21:21:43,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:43,243 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:43,243 INFO L213 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] [2022-12-05 21:21:43,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-05 21:21:43,243 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:43,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash 364876888, now seen corresponding path program 17 times [2022-12-05 21:21:43,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:43,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149614790] [2022-12-05 21:21:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:43,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:43,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:43,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149614790] [2022-12-05 21:21:43,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149614790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:43,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:43,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:43,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047269277] [2022-12-05 21:21:43,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:43,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:43,392 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:43,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 214 transitions, 4020 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:43,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:43,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:43,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:43,705 INFO L130 PetriNetUnfolder]: 745/1454 cut-off events. [2022-12-05 21:21:43,705 INFO L131 PetriNetUnfolder]: For 13817/13817 co-relation queries the response was YES. [2022-12-05 21:21:43,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10848 conditions, 1454 events. 745/1454 cut-off events. For 13817/13817 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8480 event pairs, 98 based on Foata normal form. 4/1458 useless extension candidates. Maximal degree in co-relation 10280. Up to 1359 conditions per place. [2022-12-05 21:21:43,713 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 207 selfloop transitions, 24 changer transitions 8/239 dead transitions. [2022-12-05 21:21:43,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 239 transitions, 4571 flow [2022-12-05 21:21:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 21:21:43,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 21:21:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 74 transitions. [2022-12-05 21:21:43,714 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.21893491124260356 [2022-12-05 21:21:43,714 INFO L175 Difference]: Start difference. First operand has 105 places, 214 transitions, 4020 flow. Second operand 13 states and 74 transitions. [2022-12-05 21:21:43,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 239 transitions, 4571 flow [2022-12-05 21:21:43,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 239 transitions, 4454 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-12-05 21:21:43,742 INFO L231 Difference]: Finished difference. Result has 112 places, 211 transitions, 3887 flow [2022-12-05 21:21:43,742 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3903, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3887, PETRI_PLACES=112, PETRI_TRANSITIONS=211} [2022-12-05 21:21:43,742 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 73 predicate places. [2022-12-05 21:21:43,742 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 211 transitions, 3887 flow [2022-12-05 21:21:43,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:43,742 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:43,743 INFO L213 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] [2022-12-05 21:21:43,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-05 21:21:43,743 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash 793923998, now seen corresponding path program 18 times [2022-12-05 21:21:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:43,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741375477] [2022-12-05 21:21:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:43,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:43,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:43,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741375477] [2022-12-05 21:21:43,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741375477] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:43,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:43,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935503668] [2022-12-05 21:21:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:43,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:43,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:43,884 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:43,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 211 transitions, 3887 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:43,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:43,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:43,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:44,196 INFO L130 PetriNetUnfolder]: 758/1487 cut-off events. [2022-12-05 21:21:44,196 INFO L131 PetriNetUnfolder]: For 14435/14435 co-relation queries the response was YES. [2022-12-05 21:21:44,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10901 conditions, 1487 events. 758/1487 cut-off events. For 14435/14435 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8779 event pairs, 72 based on Foata normal form. 6/1493 useless extension candidates. Maximal degree in co-relation 10327. Up to 1222 conditions per place. [2022-12-05 21:21:44,204 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 178 selfloop transitions, 75 changer transitions 11/264 dead transitions. [2022-12-05 21:21:44,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 264 transitions, 5065 flow [2022-12-05 21:21:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 21:21:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 21:21:44,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 93 transitions. [2022-12-05 21:21:44,206 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2980769230769231 [2022-12-05 21:21:44,206 INFO L175 Difference]: Start difference. First operand has 112 places, 211 transitions, 3887 flow. Second operand 12 states and 93 transitions. [2022-12-05 21:21:44,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 264 transitions, 5065 flow [2022-12-05 21:21:44,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 264 transitions, 5008 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-12-05 21:21:44,238 INFO L231 Difference]: Finished difference. Result has 115 places, 225 transitions, 4360 flow [2022-12-05 21:21:44,238 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3838, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4360, PETRI_PLACES=115, PETRI_TRANSITIONS=225} [2022-12-05 21:21:44,238 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2022-12-05 21:21:44,238 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 225 transitions, 4360 flow [2022-12-05 21:21:44,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:44,239 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:44,239 INFO L213 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] [2022-12-05 21:21:44,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-05 21:21:44,239 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:44,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:44,239 INFO L85 PathProgramCache]: Analyzing trace with hash 388316580, now seen corresponding path program 19 times [2022-12-05 21:21:44,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:44,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410177146] [2022-12-05 21:21:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:44,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:44,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:44,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410177146] [2022-12-05 21:21:44,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410177146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:44,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:44,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951923586] [2022-12-05 21:21:44,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:44,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:44,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:44,367 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:44,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 225 transitions, 4360 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:44,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:44,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:44,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:44,637 INFO L130 PetriNetUnfolder]: 739/1452 cut-off events. [2022-12-05 21:21:44,637 INFO L131 PetriNetUnfolder]: For 15306/15306 co-relation queries the response was YES. [2022-12-05 21:21:44,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11016 conditions, 1452 events. 739/1452 cut-off events. For 15306/15306 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8567 event pairs, 76 based on Foata normal form. 4/1456 useless extension candidates. Maximal degree in co-relation 10380. Up to 1384 conditions per place. [2022-12-05 21:21:44,646 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 219 selfloop transitions, 16 changer transitions 7/242 dead transitions. [2022-12-05 21:21:44,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 242 transitions, 4915 flow [2022-12-05 21:21:44,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:21:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:21:44,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 60 transitions. [2022-12-05 21:21:44,648 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.23076923076923078 [2022-12-05 21:21:44,648 INFO L175 Difference]: Start difference. First operand has 115 places, 225 transitions, 4360 flow. Second operand 10 states and 60 transitions. [2022-12-05 21:21:44,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 242 transitions, 4915 flow [2022-12-05 21:21:44,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 242 transitions, 4855 flow, removed 28 selfloop flow, removed 1 redundant places. [2022-12-05 21:21:44,686 INFO L231 Difference]: Finished difference. Result has 123 places, 221 transitions, 4269 flow [2022-12-05 21:21:44,686 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=4286, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4269, PETRI_PLACES=123, PETRI_TRANSITIONS=221} [2022-12-05 21:21:44,686 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2022-12-05 21:21:44,686 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 221 transitions, 4269 flow [2022-12-05 21:21:44,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:44,687 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:44,687 INFO L213 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] [2022-12-05 21:21:44,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-05 21:21:44,687 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:44,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1979681944, now seen corresponding path program 20 times [2022-12-05 21:21:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:44,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998996774] [2022-12-05 21:21:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:44,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:44,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:44,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998996774] [2022-12-05 21:21:44,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998996774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:44,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:44,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:44,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822920118] [2022-12-05 21:21:44,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:44,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:44,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:44,822 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:44,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 221 transitions, 4269 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:44,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:44,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:44,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:45,136 INFO L130 PetriNetUnfolder]: 729/1430 cut-off events. [2022-12-05 21:21:45,136 INFO L131 PetriNetUnfolder]: For 17115/17115 co-relation queries the response was YES. [2022-12-05 21:21:45,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10914 conditions, 1430 events. 729/1430 cut-off events. For 17115/17115 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8363 event pairs, 44 based on Foata normal form. 4/1434 useless extension candidates. Maximal degree in co-relation 10292. Up to 731 conditions per place. [2022-12-05 21:21:45,145 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 120 selfloop transitions, 133 changer transitions 4/257 dead transitions. [2022-12-05 21:21:45,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 257 transitions, 4956 flow [2022-12-05 21:21:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:21:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:21:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2022-12-05 21:21:45,146 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2022-12-05 21:21:45,146 INFO L175 Difference]: Start difference. First operand has 123 places, 221 transitions, 4269 flow. Second operand 10 states and 90 transitions. [2022-12-05 21:21:45,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 257 transitions, 4956 flow [2022-12-05 21:21:45,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 257 transitions, 4908 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-05 21:21:45,213 INFO L231 Difference]: Finished difference. Result has 122 places, 217 transitions, 4451 flow [2022-12-05 21:21:45,214 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4451, PETRI_PLACES=122, PETRI_TRANSITIONS=217} [2022-12-05 21:21:45,214 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2022-12-05 21:21:45,214 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 217 transitions, 4451 flow [2022-12-05 21:21:45,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:45,215 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:45,215 INFO L213 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] [2022-12-05 21:21:45,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-05 21:21:45,216 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:45,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:45,216 INFO L85 PathProgramCache]: Analyzing trace with hash 223280024, now seen corresponding path program 21 times [2022-12-05 21:21:45,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:45,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501477955] [2022-12-05 21:21:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:45,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:45,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:45,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501477955] [2022-12-05 21:21:45,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501477955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:45,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:45,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:45,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405447448] [2022-12-05 21:21:45,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:45,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:45,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:45,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:45,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:45,370 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:45,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 217 transitions, 4451 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:45,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:45,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:45,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:45,647 INFO L130 PetriNetUnfolder]: 725/1418 cut-off events. [2022-12-05 21:21:45,647 INFO L131 PetriNetUnfolder]: For 18389/18389 co-relation queries the response was YES. [2022-12-05 21:21:45,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11507 conditions, 1418 events. 725/1418 cut-off events. For 18389/18389 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8238 event pairs, 72 based on Foata normal form. 4/1422 useless extension candidates. Maximal degree in co-relation 10850. Up to 1350 conditions per place. [2022-12-05 21:21:45,655 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 208 selfloop transitions, 11 changer transitions 17/236 dead transitions. [2022-12-05 21:21:45,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 236 transitions, 5005 flow [2022-12-05 21:21:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 21:21:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 21:21:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 62 transitions. [2022-12-05 21:21:45,656 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.21678321678321677 [2022-12-05 21:21:45,656 INFO L175 Difference]: Start difference. First operand has 122 places, 217 transitions, 4451 flow. Second operand 11 states and 62 transitions. [2022-12-05 21:21:45,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 236 transitions, 5005 flow [2022-12-05 21:21:45,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 236 transitions, 4786 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-12-05 21:21:45,700 INFO L231 Difference]: Finished difference. Result has 125 places, 208 transitions, 4081 flow [2022-12-05 21:21:45,700 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=4236, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4081, PETRI_PLACES=125, PETRI_TRANSITIONS=208} [2022-12-05 21:21:45,700 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2022-12-05 21:21:45,700 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 208 transitions, 4081 flow [2022-12-05 21:21:45,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:45,700 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:45,701 INFO L213 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] [2022-12-05 21:21:45,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-05 21:21:45,701 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2041862562, now seen corresponding path program 22 times [2022-12-05 21:21:45,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:45,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194314133] [2022-12-05 21:21:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:45,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:45,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:45,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194314133] [2022-12-05 21:21:45,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194314133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:45,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:45,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:45,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802575147] [2022-12-05 21:21:45,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:45,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:45,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:45,849 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:45,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 208 transitions, 4081 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:45,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:45,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:45,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:46,079 INFO L130 PetriNetUnfolder]: 708/1381 cut-off events. [2022-12-05 21:21:46,079 INFO L131 PetriNetUnfolder]: For 17686/17686 co-relation queries the response was YES. [2022-12-05 21:21:46,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10792 conditions, 1381 events. 708/1381 cut-off events. For 17686/17686 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7931 event pairs, 80 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 10279. Up to 1344 conditions per place. [2022-12-05 21:21:46,087 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 207 selfloop transitions, 7 changer transitions 7/221 dead transitions. [2022-12-05 21:21:46,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 221 transitions, 4555 flow [2022-12-05 21:21:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:21:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:21:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2022-12-05 21:21:46,088 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.21367521367521367 [2022-12-05 21:21:46,088 INFO L175 Difference]: Start difference. First operand has 125 places, 208 transitions, 4081 flow. Second operand 9 states and 50 transitions. [2022-12-05 21:21:46,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 221 transitions, 4555 flow [2022-12-05 21:21:46,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 221 transitions, 4443 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-12-05 21:21:46,127 INFO L231 Difference]: Finished difference. Result has 117 places, 204 transitions, 3914 flow [2022-12-05 21:21:46,127 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3959, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3914, PETRI_PLACES=117, PETRI_TRANSITIONS=204} [2022-12-05 21:21:46,127 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 78 predicate places. [2022-12-05 21:21:46,127 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 204 transitions, 3914 flow [2022-12-05 21:21:46,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:46,127 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:46,128 INFO L213 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] [2022-12-05 21:21:46,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-05 21:21:46,128 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:46,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:46,128 INFO L85 PathProgramCache]: Analyzing trace with hash 551123916, now seen corresponding path program 23 times [2022-12-05 21:21:46,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:46,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396404792] [2022-12-05 21:21:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:46,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:46,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396404792] [2022-12-05 21:21:46,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396404792] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:46,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:46,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:46,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860326738] [2022-12-05 21:21:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:46,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:46,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:46,266 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:46,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 204 transitions, 3914 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:46,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:46,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:46,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:46,502 INFO L130 PetriNetUnfolder]: 704/1373 cut-off events. [2022-12-05 21:21:46,502 INFO L131 PetriNetUnfolder]: For 16940/16940 co-relation queries the response was YES. [2022-12-05 21:21:46,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10419 conditions, 1373 events. 704/1373 cut-off events. For 16940/16940 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7839 event pairs, 80 based on Foata normal form. 4/1377 useless extension candidates. Maximal degree in co-relation 10099. Up to 1336 conditions per place. [2022-12-05 21:21:46,509 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 205 selfloop transitions, 8 changer transitions 5/218 dead transitions. [2022-12-05 21:21:46,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 218 transitions, 4392 flow [2022-12-05 21:21:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:21:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:21:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2022-12-05 21:21:46,510 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.21367521367521367 [2022-12-05 21:21:46,510 INFO L175 Difference]: Start difference. First operand has 117 places, 204 transitions, 3914 flow. Second operand 9 states and 50 transitions. [2022-12-05 21:21:46,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 218 transitions, 4392 flow [2022-12-05 21:21:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 218 transitions, 4366 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-12-05 21:21:46,547 INFO L231 Difference]: Finished difference. Result has 114 places, 202 transitions, 3859 flow [2022-12-05 21:21:46,547 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3888, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3859, PETRI_PLACES=114, PETRI_TRANSITIONS=202} [2022-12-05 21:21:46,548 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 75 predicate places. [2022-12-05 21:21:46,548 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 202 transitions, 3859 flow [2022-12-05 21:21:46,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:46,548 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:46,548 INFO L213 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] [2022-12-05 21:21:46,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-05 21:21:46,548 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:46,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:46,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1967876362, now seen corresponding path program 24 times [2022-12-05 21:21:46,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:46,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850053345] [2022-12-05 21:21:46,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:46,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:46,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:46,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850053345] [2022-12-05 21:21:46,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850053345] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:46,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:46,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:46,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516824651] [2022-12-05 21:21:46,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:46,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:46,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:46,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:46,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:46,705 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:46,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 202 transitions, 3859 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:46,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:46,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:46,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:46,955 INFO L130 PetriNetUnfolder]: 702/1367 cut-off events. [2022-12-05 21:21:46,955 INFO L131 PetriNetUnfolder]: For 16492/16492 co-relation queries the response was YES. [2022-12-05 21:21:46,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10373 conditions, 1367 events. 702/1367 cut-off events. For 16492/16492 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7809 event pairs, 46 based on Foata normal form. 2/1369 useless extension candidates. Maximal degree in co-relation 10123. Up to 721 conditions per place. [2022-12-05 21:21:46,963 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 107 selfloop transitions, 114 changer transitions 13/234 dead transitions. [2022-12-05 21:21:46,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 234 transitions, 4521 flow [2022-12-05 21:21:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:21:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:21:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2022-12-05 21:21:46,965 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3418803418803419 [2022-12-05 21:21:46,965 INFO L175 Difference]: Start difference. First operand has 114 places, 202 transitions, 3859 flow. Second operand 9 states and 80 transitions. [2022-12-05 21:21:46,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 234 transitions, 4521 flow [2022-12-05 21:21:46,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 234 transitions, 4417 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-12-05 21:21:47,002 INFO L231 Difference]: Finished difference. Result has 111 places, 197 transitions, 4000 flow [2022-12-05 21:21:47,002 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4000, PETRI_PLACES=111, PETRI_TRANSITIONS=197} [2022-12-05 21:21:47,003 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2022-12-05 21:21:47,003 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 197 transitions, 4000 flow [2022-12-05 21:21:47,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:47,003 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:47,003 INFO L213 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] [2022-12-05 21:21:47,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-05 21:21:47,003 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1336961756, now seen corresponding path program 25 times [2022-12-05 21:21:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:47,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676441875] [2022-12-05 21:21:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:47,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676441875] [2022-12-05 21:21:47,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676441875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:47,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:47,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:21:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110298711] [2022-12-05 21:21:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:47,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:21:47,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:47,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:21:47,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:21:47,113 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:47,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 197 transitions, 4000 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-12-05 21:21:47,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:47,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:47,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:47,298 INFO L130 PetriNetUnfolder]: 633/1246 cut-off events. [2022-12-05 21:21:47,298 INFO L131 PetriNetUnfolder]: For 15738/15738 co-relation queries the response was YES. [2022-12-05 21:21:47,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9547 conditions, 1246 events. 633/1246 cut-off events. For 15738/15738 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7038 event pairs, 76 based on Foata normal form. 20/1266 useless extension candidates. Maximal degree in co-relation 8629. Up to 1171 conditions per place. [2022-12-05 21:21:47,306 INFO L137 encePairwiseOnDemand]: 20/26 looper letters, 181 selfloop transitions, 20 changer transitions 0/201 dead transitions. [2022-12-05 21:21:47,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 201 transitions, 4202 flow [2022-12-05 21:21:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:21:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:21:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2022-12-05 21:21:47,306 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2022-12-05 21:21:47,306 INFO L175 Difference]: Start difference. First operand has 111 places, 197 transitions, 4000 flow. Second operand 5 states and 45 transitions. [2022-12-05 21:21:47,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 201 transitions, 4202 flow [2022-12-05 21:21:47,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 201 transitions, 3670 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-12-05 21:21:47,337 INFO L231 Difference]: Finished difference. Result has 102 places, 188 transitions, 3257 flow [2022-12-05 21:21:47,337 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3257, PETRI_PLACES=102, PETRI_TRANSITIONS=188} [2022-12-05 21:21:47,337 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 63 predicate places. [2022-12-05 21:21:47,337 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 188 transitions, 3257 flow [2022-12-05 21:21:47,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-12-05 21:21:47,338 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:47,338 INFO L213 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] [2022-12-05 21:21:47,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-05 21:21:47,338 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:47,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:47,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1218614372, now seen corresponding path program 26 times [2022-12-05 21:21:47,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:47,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487607739] [2022-12-05 21:21:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:47,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:47,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487607739] [2022-12-05 21:21:47,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487607739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:47,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:47,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:21:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892040991] [2022-12-05 21:21:47,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:47,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:21:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:21:47,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:21:47,458 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:47,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 188 transitions, 3257 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:47,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:47,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:47,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:47,659 INFO L130 PetriNetUnfolder]: 529/1090 cut-off events. [2022-12-05 21:21:47,659 INFO L131 PetriNetUnfolder]: For 11425/11425 co-relation queries the response was YES. [2022-12-05 21:21:47,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7379 conditions, 1090 events. 529/1090 cut-off events. For 11425/11425 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6281 event pairs, 28 based on Foata normal form. 50/1140 useless extension candidates. Maximal degree in co-relation 6536. Up to 411 conditions per place. [2022-12-05 21:21:47,664 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 84 selfloop transitions, 102 changer transitions 13/199 dead transitions. [2022-12-05 21:21:47,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 199 transitions, 3433 flow [2022-12-05 21:21:47,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:21:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:21:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2022-12-05 21:21:47,665 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2022-12-05 21:21:47,665 INFO L175 Difference]: Start difference. First operand has 102 places, 188 transitions, 3257 flow. Second operand 8 states and 84 transitions. [2022-12-05 21:21:47,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 199 transitions, 3433 flow [2022-12-05 21:21:47,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 199 transitions, 3323 flow, removed 12 selfloop flow, removed 6 redundant places. [2022-12-05 21:21:47,687 INFO L231 Difference]: Finished difference. Result has 104 places, 156 transitions, 2854 flow [2022-12-05 21:21:47,687 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2854, PETRI_PLACES=104, PETRI_TRANSITIONS=156} [2022-12-05 21:21:47,688 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2022-12-05 21:21:47,688 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 156 transitions, 2854 flow [2022-12-05 21:21:47,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-05 21:21:47,688 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:47,688 INFO L213 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] [2022-12-05 21:21:47,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-05 21:21:47,688 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:47,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:47,688 INFO L85 PathProgramCache]: Analyzing trace with hash -657767516, now seen corresponding path program 27 times [2022-12-05 21:21:47,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:47,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551459450] [2022-12-05 21:21:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:47,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:47,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:47,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551459450] [2022-12-05 21:21:47,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551459450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:47,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:47,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947753102] [2022-12-05 21:21:47,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:47,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:47,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:47,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:47,816 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:47,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 156 transitions, 2854 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:47,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:47,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:47,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:48,091 INFO L130 PetriNetUnfolder]: 473/978 cut-off events. [2022-12-05 21:21:48,091 INFO L131 PetriNetUnfolder]: For 10099/10099 co-relation queries the response was YES. [2022-12-05 21:21:48,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7005 conditions, 978 events. 473/978 cut-off events. For 10099/10099 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5407 event pairs, 52 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 6032. Up to 810 conditions per place. [2022-12-05 21:21:48,096 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 149 selfloop transitions, 44 changer transitions 4/197 dead transitions. [2022-12-05 21:21:48,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 197 transitions, 3657 flow [2022-12-05 21:21:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 21:21:48,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 21:21:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 83 transitions. [2022-12-05 21:21:48,097 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2455621301775148 [2022-12-05 21:21:48,097 INFO L175 Difference]: Start difference. First operand has 104 places, 156 transitions, 2854 flow. Second operand 13 states and 83 transitions. [2022-12-05 21:21:48,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 197 transitions, 3657 flow [2022-12-05 21:21:48,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 197 transitions, 3349 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-12-05 21:21:48,120 INFO L231 Difference]: Finished difference. Result has 111 places, 164 transitions, 2850 flow [2022-12-05 21:21:48,121 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2850, PETRI_PLACES=111, PETRI_TRANSITIONS=164} [2022-12-05 21:21:48,121 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2022-12-05 21:21:48,121 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 164 transitions, 2850 flow [2022-12-05 21:21:48,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:48,121 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:48,121 INFO L213 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] [2022-12-05 21:21:48,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-05 21:21:48,121 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1448284434, now seen corresponding path program 28 times [2022-12-05 21:21:48,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:48,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459263033] [2022-12-05 21:21:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:48,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:48,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:48,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459263033] [2022-12-05 21:21:48,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459263033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:48,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:48,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:48,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143203660] [2022-12-05 21:21:48,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:48,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:48,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:48,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:48,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:48,257 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:48,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 164 transitions, 2850 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:48,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:48,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:48,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:48,492 INFO L130 PetriNetUnfolder]: 284/647 cut-off events. [2022-12-05 21:21:48,492 INFO L131 PetriNetUnfolder]: For 7792/7792 co-relation queries the response was YES. [2022-12-05 21:21:48,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4761 conditions, 647 events. 284/647 cut-off events. For 7792/7792 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3856 event pairs, 0 based on Foata normal form. 74/721 useless extension candidates. Maximal degree in co-relation 4537. Up to 185 conditions per place. [2022-12-05 21:21:48,495 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 49 selfloop transitions, 61 changer transitions 59/169 dead transitions. [2022-12-05 21:21:48,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 169 transitions, 2846 flow [2022-12-05 21:21:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 21:21:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 21:21:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 104 transitions. [2022-12-05 21:21:48,496 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2022-12-05 21:21:48,496 INFO L175 Difference]: Start difference. First operand has 111 places, 164 transitions, 2850 flow. Second operand 13 states and 104 transitions. [2022-12-05 21:21:48,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 169 transitions, 2846 flow [2022-12-05 21:21:48,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 169 transitions, 2694 flow, removed 6 selfloop flow, removed 13 redundant places. [2022-12-05 21:21:48,512 INFO L231 Difference]: Finished difference. Result has 109 places, 86 transitions, 1348 flow [2022-12-05 21:21:48,512 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1348, PETRI_PLACES=109, PETRI_TRANSITIONS=86} [2022-12-05 21:21:48,512 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2022-12-05 21:21:48,512 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 86 transitions, 1348 flow [2022-12-05 21:21:48,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:48,513 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:48,513 INFO L213 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] [2022-12-05 21:21:48,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-05 21:21:48,513 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:48,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1364344406, now seen corresponding path program 29 times [2022-12-05 21:21:48,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:48,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576373899] [2022-12-05 21:21:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:48,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:48,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:48,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576373899] [2022-12-05 21:21:48,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576373899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:48,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:48,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670756563] [2022-12-05 21:21:48,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:48,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:48,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:48,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:48,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:48,630 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:48,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 86 transitions, 1348 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:48,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:48,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:48,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:48,765 INFO L130 PetriNetUnfolder]: 137/320 cut-off events. [2022-12-05 21:21:48,765 INFO L131 PetriNetUnfolder]: For 3450/3450 co-relation queries the response was YES. [2022-12-05 21:21:48,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2227 conditions, 320 events. 137/320 cut-off events. For 3450/3450 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1454 event pairs, 4 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 1709. Up to 90 conditions per place. [2022-12-05 21:21:48,767 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 50 selfloop transitions, 53 changer transitions 13/116 dead transitions. [2022-12-05 21:21:48,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 116 transitions, 1776 flow [2022-12-05 21:21:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 21:21:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 21:21:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 73 transitions. [2022-12-05 21:21:48,767 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.25524475524475526 [2022-12-05 21:21:48,767 INFO L175 Difference]: Start difference. First operand has 109 places, 86 transitions, 1348 flow. Second operand 11 states and 73 transitions. [2022-12-05 21:21:48,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 116 transitions, 1776 flow [2022-12-05 21:21:48,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 116 transitions, 1336 flow, removed 39 selfloop flow, removed 20 redundant places. [2022-12-05 21:21:48,778 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 1157 flow [2022-12-05 21:21:48,779 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1157, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2022-12-05 21:21:48,780 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2022-12-05 21:21:48,780 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 1157 flow [2022-12-05 21:21:48,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:48,780 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:48,781 INFO L213 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] [2022-12-05 21:21:48,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-05 21:21:48,781 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash -799364380, now seen corresponding path program 30 times [2022-12-05 21:21:48,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:48,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540786759] [2022-12-05 21:21:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:48,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:48,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:48,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540786759] [2022-12-05 21:21:48,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540786759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:48,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:48,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:48,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658779201] [2022-12-05 21:21:48,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:48,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:48,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:48,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:48,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:48,925 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:48,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 1157 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:48,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:48,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:48,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:49,064 INFO L130 PetriNetUnfolder]: 117/280 cut-off events. [2022-12-05 21:21:49,064 INFO L131 PetriNetUnfolder]: For 2111/2111 co-relation queries the response was YES. [2022-12-05 21:21:49,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 280 events. 117/280 cut-off events. For 2111/2111 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1229 event pairs, 4 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 1290. Up to 208 conditions per place. [2022-12-05 21:21:49,077 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 76 selfloop transitions, 20 changer transitions 6/102 dead transitions. [2022-12-05 21:21:49,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 102 transitions, 1385 flow [2022-12-05 21:21:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 21:21:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 21:21:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 58 transitions. [2022-12-05 21:21:49,078 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.20279720279720279 [2022-12-05 21:21:49,078 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 1157 flow. Second operand 11 states and 58 transitions. [2022-12-05 21:21:49,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 102 transitions, 1385 flow [2022-12-05 21:21:49,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 1255 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-12-05 21:21:49,083 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 1000 flow [2022-12-05 21:21:49,084 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1000, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2022-12-05 21:21:49,084 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 58 predicate places. [2022-12-05 21:21:49,084 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 1000 flow [2022-12-05 21:21:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:49,084 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:49,084 INFO L213 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] [2022-12-05 21:21:49,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-05 21:21:49,084 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash 586750948, now seen corresponding path program 31 times [2022-12-05 21:21:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:49,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331180348] [2022-12-05 21:21:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:49,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:49,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331180348] [2022-12-05 21:21:49,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331180348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:49,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:49,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:49,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180069773] [2022-12-05 21:21:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:49,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:49,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:49,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:49,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:49,201 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:49,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 1000 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:49,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:49,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:49,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:49,329 INFO L130 PetriNetUnfolder]: 111/270 cut-off events. [2022-12-05 21:21:49,330 INFO L131 PetriNetUnfolder]: For 1827/1827 co-relation queries the response was YES. [2022-12-05 21:21:49,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 270 events. 111/270 cut-off events. For 1827/1827 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1176 event pairs, 4 based on Foata normal form. 4/274 useless extension candidates. Maximal degree in co-relation 1172. Up to 206 conditions per place. [2022-12-05 21:21:49,331 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 76 selfloop transitions, 15 changer transitions 7/98 dead transitions. [2022-12-05 21:21:49,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 98 transitions, 1254 flow [2022-12-05 21:21:49,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:21:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:21:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 54 transitions. [2022-12-05 21:21:49,332 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2076923076923077 [2022-12-05 21:21:49,332 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 1000 flow. Second operand 10 states and 54 transitions. [2022-12-05 21:21:49,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 98 transitions, 1254 flow [2022-12-05 21:21:49,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 1211 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-12-05 21:21:49,337 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 945 flow [2022-12-05 21:21:49,337 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=945, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2022-12-05 21:21:49,337 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 58 predicate places. [2022-12-05 21:21:49,337 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 945 flow [2022-12-05 21:21:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:49,338 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:49,338 INFO L213 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] [2022-12-05 21:21:49,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-05 21:21:49,338 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:49,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:49,338 INFO L85 PathProgramCache]: Analyzing trace with hash -943235472, now seen corresponding path program 32 times [2022-12-05 21:21:49,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:49,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560315787] [2022-12-05 21:21:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:49,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:49,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:49,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560315787] [2022-12-05 21:21:49,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560315787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:49,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:49,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:49,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226774398] [2022-12-05 21:21:49,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:49,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:49,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:49,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:49,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:49,462 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:49,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 945 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:49,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:49,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:49,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:49,593 INFO L130 PetriNetUnfolder]: 101/248 cut-off events. [2022-12-05 21:21:49,594 INFO L131 PetriNetUnfolder]: For 1447/1447 co-relation queries the response was YES. [2022-12-05 21:21:49,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 248 events. 101/248 cut-off events. For 1447/1447 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1039 event pairs, 4 based on Foata normal form. 4/252 useless extension candidates. Maximal degree in co-relation 1234. Up to 82 conditions per place. [2022-12-05 21:21:49,595 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 43 selfloop transitions, 40 changer transitions 11/94 dead transitions. [2022-12-05 21:21:49,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 1171 flow [2022-12-05 21:21:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:21:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:21:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 66 transitions. [2022-12-05 21:21:49,595 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.25384615384615383 [2022-12-05 21:21:49,595 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 945 flow. Second operand 10 states and 66 transitions. [2022-12-05 21:21:49,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 1171 flow [2022-12-05 21:21:49,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 1123 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-05 21:21:49,600 INFO L231 Difference]: Finished difference. Result has 96 places, 72 transitions, 868 flow [2022-12-05 21:21:49,600 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=868, PETRI_PLACES=96, PETRI_TRANSITIONS=72} [2022-12-05 21:21:49,600 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 57 predicate places. [2022-12-05 21:21:49,601 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 72 transitions, 868 flow [2022-12-05 21:21:49,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:49,601 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:49,601 INFO L213 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] [2022-12-05 21:21:49,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-05 21:21:49,601 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:49,601 INFO L85 PathProgramCache]: Analyzing trace with hash 308582262, now seen corresponding path program 33 times [2022-12-05 21:21:49,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:49,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190159691] [2022-12-05 21:21:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:49,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:49,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190159691] [2022-12-05 21:21:49,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190159691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:49,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:49,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121277206] [2022-12-05 21:21:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:49,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:49,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:49,719 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:49,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 72 transitions, 868 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:49,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:49,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:49,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:49,828 INFO L130 PetriNetUnfolder]: 87/212 cut-off events. [2022-12-05 21:21:49,828 INFO L131 PetriNetUnfolder]: For 1471/1471 co-relation queries the response was YES. [2022-12-05 21:21:49,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 212 events. 87/212 cut-off events. For 1471/1471 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 822 event pairs, 2 based on Foata normal form. 2/214 useless extension candidates. Maximal degree in co-relation 1185. Up to 80 conditions per place. [2022-12-05 21:21:49,829 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 42 selfloop transitions, 38 changer transitions 3/83 dead transitions. [2022-12-05 21:21:49,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 83 transitions, 1074 flow [2022-12-05 21:21:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:21:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:21:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 58 transitions. [2022-12-05 21:21:49,830 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2230769230769231 [2022-12-05 21:21:49,830 INFO L175 Difference]: Start difference. First operand has 96 places, 72 transitions, 868 flow. Second operand 10 states and 58 transitions. [2022-12-05 21:21:49,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 83 transitions, 1074 flow [2022-12-05 21:21:49,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 919 flow, removed 7 selfloop flow, removed 13 redundant places. [2022-12-05 21:21:49,834 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 748 flow [2022-12-05 21:21:49,834 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=748, PETRI_PLACES=86, PETRI_TRANSITIONS=68} [2022-12-05 21:21:49,834 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 47 predicate places. [2022-12-05 21:21:49,834 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 748 flow [2022-12-05 21:21:49,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:49,834 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:49,834 INFO L213 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] [2022-12-05 21:21:49,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-05 21:21:49,835 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:49,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:49,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1898740276, now seen corresponding path program 34 times [2022-12-05 21:21:49,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:49,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625354440] [2022-12-05 21:21:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:49,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:49,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:49,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625354440] [2022-12-05 21:21:49,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625354440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:49,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:49,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316067446] [2022-12-05 21:21:49,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:49,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:49,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:49,964 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:49,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 748 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:49,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:49,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:49,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:50,086 INFO L130 PetriNetUnfolder]: 81/202 cut-off events. [2022-12-05 21:21:50,086 INFO L131 PetriNetUnfolder]: For 1059/1059 co-relation queries the response was YES. [2022-12-05 21:21:50,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 202 events. 81/202 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 765 event pairs, 4 based on Foata normal form. 2/204 useless extension candidates. Maximal degree in co-relation 895. Up to 163 conditions per place. [2022-12-05 21:21:50,087 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 65 selfloop transitions, 8 changer transitions 7/80 dead transitions. [2022-12-05 21:21:50,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 80 transitions, 944 flow [2022-12-05 21:21:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 21:21:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 21:21:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 48 transitions. [2022-12-05 21:21:50,088 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.16783216783216784 [2022-12-05 21:21:50,088 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 748 flow. Second operand 11 states and 48 transitions. [2022-12-05 21:21:50,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 80 transitions, 944 flow [2022-12-05 21:21:50,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 855 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-12-05 21:21:50,092 INFO L231 Difference]: Finished difference. Result has 86 places, 65 transitions, 627 flow [2022-12-05 21:21:50,092 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=627, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2022-12-05 21:21:50,093 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 47 predicate places. [2022-12-05 21:21:50,093 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 627 flow [2022-12-05 21:21:50,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:50,093 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:50,093 INFO L213 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] [2022-12-05 21:21:50,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-05 21:21:50,093 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1997714274, now seen corresponding path program 35 times [2022-12-05 21:21:50,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:50,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543355630] [2022-12-05 21:21:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:50,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:50,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:50,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543355630] [2022-12-05 21:21:50,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543355630] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:50,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:50,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:50,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425518885] [2022-12-05 21:21:50,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:50,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:50,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:50,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:50,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:50,234 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:50,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 627 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:50,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:50,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:50,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:50,352 INFO L130 PetriNetUnfolder]: 75/188 cut-off events. [2022-12-05 21:21:50,353 INFO L131 PetriNetUnfolder]: For 805/805 co-relation queries the response was YES. [2022-12-05 21:21:50,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 188 events. 75/188 cut-off events. For 805/805 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 672 event pairs, 4 based on Foata normal form. 2/190 useless extension candidates. Maximal degree in co-relation 941. Up to 155 conditions per place. [2022-12-05 21:21:50,354 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 57 selfloop transitions, 2 changer transitions 15/74 dead transitions. [2022-12-05 21:21:50,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 74 transitions, 800 flow [2022-12-05 21:21:50,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:21:50,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:21:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 43 transitions. [2022-12-05 21:21:50,354 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.18376068376068377 [2022-12-05 21:21:50,354 INFO L175 Difference]: Start difference. First operand has 86 places, 65 transitions, 627 flow. Second operand 9 states and 43 transitions. [2022-12-05 21:21:50,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 74 transitions, 800 flow [2022-12-05 21:21:50,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 74 transitions, 776 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-12-05 21:21:50,358 INFO L231 Difference]: Finished difference. Result has 82 places, 58 transitions, 544 flow [2022-12-05 21:21:50,358 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=544, PETRI_PLACES=82, PETRI_TRANSITIONS=58} [2022-12-05 21:21:50,358 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2022-12-05 21:21:50,358 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 58 transitions, 544 flow [2022-12-05 21:21:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:50,358 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:50,358 INFO L213 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] [2022-12-05 21:21:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-05 21:21:50,359 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:50,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1435748572, now seen corresponding path program 36 times [2022-12-05 21:21:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:50,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792898101] [2022-12-05 21:21:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:50,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:50,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792898101] [2022-12-05 21:21:50,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792898101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:50,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:50,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:50,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751705551] [2022-12-05 21:21:50,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:50,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:50,475 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:50,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 58 transitions, 544 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:50,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:50,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:50,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:50,610 INFO L130 PetriNetUnfolder]: 66/167 cut-off events. [2022-12-05 21:21:50,610 INFO L131 PetriNetUnfolder]: For 691/691 co-relation queries the response was YES. [2022-12-05 21:21:50,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 167 events. 66/167 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 584 event pairs, 4 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 582. Up to 92 conditions per place. [2022-12-05 21:21:50,611 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 43 selfloop transitions, 24 changer transitions 5/72 dead transitions. [2022-12-05 21:21:50,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 72 transitions, 742 flow [2022-12-05 21:21:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 21:21:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 21:21:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 59 transitions. [2022-12-05 21:21:50,611 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.17455621301775148 [2022-12-05 21:21:50,611 INFO L175 Difference]: Start difference. First operand has 82 places, 58 transitions, 544 flow. Second operand 13 states and 59 transitions. [2022-12-05 21:21:50,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 72 transitions, 742 flow [2022-12-05 21:21:50,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 635 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-12-05 21:21:50,614 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 475 flow [2022-12-05 21:21:50,614 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=475, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2022-12-05 21:21:50,614 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2022-12-05 21:21:50,614 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 475 flow [2022-12-05 21:21:50,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:50,614 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:50,614 INFO L213 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] [2022-12-05 21:21:50,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-05 21:21:50,615 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:50,615 INFO L85 PathProgramCache]: Analyzing trace with hash -382272522, now seen corresponding path program 37 times [2022-12-05 21:21:50,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:50,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000240470] [2022-12-05 21:21:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:50,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:50,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:50,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000240470] [2022-12-05 21:21:50,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000240470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:50,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:50,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:50,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187878002] [2022-12-05 21:21:50,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:50,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:50,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:50,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:50,738 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:50,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 475 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:50,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:50,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:50,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:50,837 INFO L130 PetriNetUnfolder]: 64/165 cut-off events. [2022-12-05 21:21:50,838 INFO L131 PetriNetUnfolder]: For 483/483 co-relation queries the response was YES. [2022-12-05 21:21:50,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 165 events. 64/165 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 581 event pairs, 0 based on Foata normal form. 2/167 useless extension candidates. Maximal degree in co-relation 729. Up to 49 conditions per place. [2022-12-05 21:21:50,838 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 33 selfloop transitions, 31 changer transitions 5/69 dead transitions. [2022-12-05 21:21:50,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 659 flow [2022-12-05 21:21:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 21:21:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 21:21:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 53 transitions. [2022-12-05 21:21:50,840 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.1853146853146853 [2022-12-05 21:21:50,840 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 475 flow. Second operand 11 states and 53 transitions. [2022-12-05 21:21:50,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 69 transitions, 659 flow [2022-12-05 21:21:50,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 69 transitions, 591 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-12-05 21:21:50,842 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 466 flow [2022-12-05 21:21:50,842 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=466, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2022-12-05 21:21:50,843 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2022-12-05 21:21:50,843 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 466 flow [2022-12-05 21:21:50,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:50,843 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:50,843 INFO L213 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] [2022-12-05 21:21:50,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-05 21:21:50,843 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:50,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1643168316, now seen corresponding path program 38 times [2022-12-05 21:21:50,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:50,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765124219] [2022-12-05 21:21:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:50,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:50,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:50,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765124219] [2022-12-05 21:21:50,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765124219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:50,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:50,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:50,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539645580] [2022-12-05 21:21:50,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:50,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:50,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:50,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:50,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:50,969 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:50,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 466 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:50,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:50,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:50,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:51,104 INFO L130 PetriNetUnfolder]: 59/158 cut-off events. [2022-12-05 21:21:51,105 INFO L131 PetriNetUnfolder]: For 473/473 co-relation queries the response was YES. [2022-12-05 21:21:51,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 158 events. 59/158 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 552 event pairs, 0 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 501. Up to 100 conditions per place. [2022-12-05 21:21:51,106 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 46 selfloop transitions, 15 changer transitions 8/69 dead transitions. [2022-12-05 21:21:51,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 670 flow [2022-12-05 21:21:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 21:21:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 21:21:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 52 transitions. [2022-12-05 21:21:51,107 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.16666666666666666 [2022-12-05 21:21:51,107 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 466 flow. Second operand 12 states and 52 transitions. [2022-12-05 21:21:51,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 69 transitions, 670 flow [2022-12-05 21:21:51,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 637 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 21:21:51,109 INFO L231 Difference]: Finished difference. Result has 76 places, 53 transitions, 457 flow [2022-12-05 21:21:51,109 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=457, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2022-12-05 21:21:51,110 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2022-12-05 21:21:51,110 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 457 flow [2022-12-05 21:21:51,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:51,110 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:51,110 INFO L213 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] [2022-12-05 21:21:51,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-05 21:21:51,110 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1384784616, now seen corresponding path program 39 times [2022-12-05 21:21:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:51,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123175039] [2022-12-05 21:21:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:51,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123175039] [2022-12-05 21:21:51,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123175039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:51,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:51,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393891662] [2022-12-05 21:21:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:51,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:51,231 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:51,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 457 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:51,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:51,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:51,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:51,362 INFO L130 PetriNetUnfolder]: 50/139 cut-off events. [2022-12-05 21:21:51,362 INFO L131 PetriNetUnfolder]: For 411/411 co-relation queries the response was YES. [2022-12-05 21:21:51,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 139 events. 50/139 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 455 event pairs, 0 based on Foata normal form. 4/143 useless extension candidates. Maximal degree in co-relation 490. Up to 41 conditions per place. [2022-12-05 21:21:51,363 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 30 selfloop transitions, 28 changer transitions 3/61 dead transitions. [2022-12-05 21:21:51,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 61 transitions, 594 flow [2022-12-05 21:21:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:21:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:21:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 50 transitions. [2022-12-05 21:21:51,365 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.19230769230769232 [2022-12-05 21:21:51,365 INFO L175 Difference]: Start difference. First operand has 76 places, 53 transitions, 457 flow. Second operand 10 states and 50 transitions. [2022-12-05 21:21:51,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 61 transitions, 594 flow [2022-12-05 21:21:51,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 61 transitions, 557 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-12-05 21:21:51,368 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 439 flow [2022-12-05 21:21:51,368 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=439, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2022-12-05 21:21:51,369 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2022-12-05 21:21:51,369 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 439 flow [2022-12-05 21:21:51,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:51,369 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:51,369 INFO L213 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] [2022-12-05 21:21:51,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-05 21:21:51,369 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1797454396, now seen corresponding path program 40 times [2022-12-05 21:21:51,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:51,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22619008] [2022-12-05 21:21:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:51,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:51,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:51,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22619008] [2022-12-05 21:21:51,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22619008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:51,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:51,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:51,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213302351] [2022-12-05 21:21:51,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:51,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:51,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:51,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:51,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:51,541 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:51,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 439 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:51,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:51,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:51,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:51,684 INFO L130 PetriNetUnfolder]: 48/137 cut-off events. [2022-12-05 21:21:51,685 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2022-12-05 21:21:51,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 137 events. 48/137 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 449 event pairs, 2 based on Foata normal form. 2/139 useless extension candidates. Maximal degree in co-relation 466. Up to 84 conditions per place. [2022-12-05 21:21:51,686 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 43 selfloop transitions, 14 changer transitions 6/63 dead transitions. [2022-12-05 21:21:51,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 63 transitions, 639 flow [2022-12-05 21:21:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 21:21:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 21:21:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 51 transitions. [2022-12-05 21:21:51,690 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.16346153846153846 [2022-12-05 21:21:51,690 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 439 flow. Second operand 12 states and 51 transitions. [2022-12-05 21:21:51,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 63 transitions, 639 flow [2022-12-05 21:21:51,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 63 transitions, 549 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-12-05 21:21:51,694 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 388 flow [2022-12-05 21:21:51,694 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=388, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2022-12-05 21:21:51,694 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 35 predicate places. [2022-12-05 21:21:51,695 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 388 flow [2022-12-05 21:21:51,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:51,695 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:51,695 INFO L213 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] [2022-12-05 21:21:51,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-05 21:21:51,695 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash 501827556, now seen corresponding path program 41 times [2022-12-05 21:21:51,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:51,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127455014] [2022-12-05 21:21:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:51,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:51,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:51,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127455014] [2022-12-05 21:21:51,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127455014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:51,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:51,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298168884] [2022-12-05 21:21:51,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:51,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:51,853 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:51,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 388 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:51,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:51,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:51,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:51,961 INFO L130 PetriNetUnfolder]: 40/121 cut-off events. [2022-12-05 21:21:51,961 INFO L131 PetriNetUnfolder]: For 345/345 co-relation queries the response was YES. [2022-12-05 21:21:51,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 121 events. 40/121 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 368 event pairs, 2 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 442. Up to 59 conditions per place. [2022-12-05 21:21:51,962 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 32 selfloop transitions, 15 changer transitions 9/56 dead transitions. [2022-12-05 21:21:51,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 56 transitions, 507 flow [2022-12-05 21:21:51,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 21:21:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 21:21:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 47 transitions. [2022-12-05 21:21:51,962 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.16433566433566432 [2022-12-05 21:21:51,963 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 388 flow. Second operand 11 states and 47 transitions. [2022-12-05 21:21:51,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 56 transitions, 507 flow [2022-12-05 21:21:51,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 56 transitions, 469 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-12-05 21:21:51,969 INFO L231 Difference]: Finished difference. Result has 73 places, 41 transitions, 297 flow [2022-12-05 21:21:51,969 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=297, PETRI_PLACES=73, PETRI_TRANSITIONS=41} [2022-12-05 21:21:51,969 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2022-12-05 21:21:51,969 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 297 flow [2022-12-05 21:21:51,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:51,969 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:51,970 INFO L213 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] [2022-12-05 21:21:51,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-05 21:21:51,970 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1242536450, now seen corresponding path program 42 times [2022-12-05 21:21:51,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:51,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357576441] [2022-12-05 21:21:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:51,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:52,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:52,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357576441] [2022-12-05 21:21:52,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357576441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:52,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:52,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:52,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827506400] [2022-12-05 21:21:52,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:52,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:52,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:52,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:52,087 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:52,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 297 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:52,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:52,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:52,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:52,190 INFO L130 PetriNetUnfolder]: 27/90 cut-off events. [2022-12-05 21:21:52,190 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2022-12-05 21:21:52,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 90 events. 27/90 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 213 event pairs, 2 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 284. Up to 40 conditions per place. [2022-12-05 21:21:52,191 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 28 selfloop transitions, 7 changer transitions 11/46 dead transitions. [2022-12-05 21:21:52,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 46 transitions, 387 flow [2022-12-05 21:21:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:21:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:21:52,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 43 transitions. [2022-12-05 21:21:52,191 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.16538461538461538 [2022-12-05 21:21:52,191 INFO L175 Difference]: Start difference. First operand has 73 places, 41 transitions, 297 flow. Second operand 10 states and 43 transitions. [2022-12-05 21:21:52,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 46 transitions, 387 flow [2022-12-05 21:21:52,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 46 transitions, 311 flow, removed 2 selfloop flow, removed 19 redundant places. [2022-12-05 21:21:52,193 INFO L231 Difference]: Finished difference. Result has 60 places, 30 transitions, 164 flow [2022-12-05 21:21:52,193 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=60, PETRI_TRANSITIONS=30} [2022-12-05 21:21:52,193 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2022-12-05 21:21:52,193 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 30 transitions, 164 flow [2022-12-05 21:21:52,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:52,194 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:52,194 INFO L213 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] [2022-12-05 21:21:52,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-05 21:21:52,194 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:52,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:52,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1737222952, now seen corresponding path program 43 times [2022-12-05 21:21:52,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:52,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512589784] [2022-12-05 21:21:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:52,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:52,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512589784] [2022-12-05 21:21:52,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512589784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:52,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:52,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422742323] [2022-12-05 21:21:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:52,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:52,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:52,327 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:52,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 30 transitions, 164 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:52,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:52,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:52,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:52,400 INFO L130 PetriNetUnfolder]: 15/58 cut-off events. [2022-12-05 21:21:52,400 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2022-12-05 21:21:52,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 58 events. 15/58 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 135. Up to 15 conditions per place. [2022-12-05 21:21:52,400 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 25 selfloop transitions, 8 changer transitions 3/36 dead transitions. [2022-12-05 21:21:52,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 36 transitions, 241 flow [2022-12-05 21:21:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:21:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:21:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-12-05 21:21:52,402 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.1581196581196581 [2022-12-05 21:21:52,402 INFO L175 Difference]: Start difference. First operand has 60 places, 30 transitions, 164 flow. Second operand 9 states and 37 transitions. [2022-12-05 21:21:52,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 36 transitions, 241 flow [2022-12-05 21:21:52,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 186 flow, removed 4 selfloop flow, removed 14 redundant places. [2022-12-05 21:21:52,403 INFO L231 Difference]: Finished difference. Result has 45 places, 26 transitions, 98 flow [2022-12-05 21:21:52,403 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=26} [2022-12-05 21:21:52,404 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2022-12-05 21:21:52,404 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 26 transitions, 98 flow [2022-12-05 21:21:52,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:52,404 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:52,404 INFO L213 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] [2022-12-05 21:21:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-05 21:21:52,404 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:21:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:52,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1431998936, now seen corresponding path program 44 times [2022-12-05 21:21:52,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:52,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361449122] [2022-12-05 21:21:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:52,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:52,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361449122] [2022-12-05 21:21:52,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361449122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:52,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:52,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 21:21:52,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308799402] [2022-12-05 21:21:52,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:52,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:21:52,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:52,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:21:52,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:21:52,539 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-05 21:21:52,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 26 transitions, 98 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:52,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:52,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-05 21:21:52,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:52,589 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2022-12-05 21:21:52,589 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-05 21:21:52,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 30 events. 7/30 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 2/32 useless extension candidates. Maximal degree in co-relation 83. Up to 9 conditions per place. [2022-12-05 21:21:52,590 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2022-12-05 21:21:52,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 22 transitions, 120 flow [2022-12-05 21:21:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:21:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:21:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 23 transitions. [2022-12-05 21:21:52,590 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.09829059829059829 [2022-12-05 21:21:52,590 INFO L175 Difference]: Start difference. First operand has 45 places, 26 transitions, 98 flow. Second operand 9 states and 23 transitions. [2022-12-05 21:21:52,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 22 transitions, 120 flow [2022-12-05 21:21:52,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 97 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-05 21:21:52,591 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2022-12-05 21:21:52,591 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2022-12-05 21:21:52,591 INFO L294 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-12-05 21:21:52,591 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2022-12-05 21:21:52,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-12-05 21:21:52,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-05 21:21:52,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-05 21:21:52,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-05 21:21:52,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-05 21:21:52,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-05 21:21:52,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-05 21:21:52,597 INFO L458 BasicCegarLoop]: Path program histogram: [44] [2022-12-05 21:21:52,600 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 21:21:52,600 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 21:21:52,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:21:52 BasicIcfg [2022-12-05 21:21:52,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 21:21:52,603 INFO L158 Benchmark]: Toolchain (without parser) took 23886.86ms. Allocated memory was 197.1MB in the beginning and 698.4MB in the end (delta: 501.2MB). Free memory was 172.0MB in the beginning and 607.3MB in the end (delta: -435.3MB). Peak memory consumption was 66.7MB. Max. memory is 8.0GB. [2022-12-05 21:21:52,605 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 197.1MB. Free memory is still 173.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:21:52,605 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.72ms. Allocated memory is still 197.1MB. Free memory was 171.8MB in the beginning and 156.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-05 21:21:52,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.86ms. Allocated memory is still 197.1MB. Free memory was 156.5MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:21:52,605 INFO L158 Benchmark]: Boogie Preprocessor took 31.30ms. Allocated memory is still 197.1MB. Free memory was 154.4MB in the beginning and 152.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 21:21:52,606 INFO L158 Benchmark]: RCFGBuilder took 470.63ms. Allocated memory is still 197.1MB. Free memory was 152.9MB in the beginning and 130.3MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-05 21:21:52,606 INFO L158 Benchmark]: TraceAbstraction took 23109.42ms. Allocated memory was 197.1MB in the beginning and 698.4MB in the end (delta: 501.2MB). Free memory was 129.8MB in the beginning and 607.3MB in the end (delta: -477.5MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. [2022-12-05 21:21:52,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 197.1MB. Free memory is still 173.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.72ms. Allocated memory is still 197.1MB. Free memory was 171.8MB in the beginning and 156.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.86ms. Allocated memory is still 197.1MB. Free memory was 156.5MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.30ms. Allocated memory is still 197.1MB. Free memory was 154.4MB in the beginning and 152.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 470.63ms. Allocated memory is still 197.1MB. Free memory was 152.9MB in the beginning and 130.3MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 23109.42ms. Allocated memory was 197.1MB in the beginning and 698.4MB in the end (delta: 501.2MB). Free memory was 129.8MB in the beginning and 607.3MB in the end (delta: -477.5MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 130 PlacesBefore, 39 PlacesAfterwards, 119 TransitionsBefore, 26 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 58 TrivialYvCompositions, 33 ConcurrentYvCompositions, 2 ChoiceCompositions, 93 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 731, independent: 700, independent conditional: 700, independent unconditional: 0, dependent: 31, dependent conditional: 31, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 731, independent: 700, independent conditional: 0, independent unconditional: 700, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 731, independent: 700, independent conditional: 0, independent unconditional: 700, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 731, independent: 700, independent conditional: 0, independent unconditional: 700, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 702, independent: 675, independent conditional: 0, independent unconditional: 675, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 702, independent: 638, independent conditional: 0, independent unconditional: 638, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 114, independent: 66, independent conditional: 0, independent unconditional: 66, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 731, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 702, unknown conditional: 0, unknown unconditional: 702] , Statistics on independence cache: Total cache size (in pairs): 967, Positive cache size: 940, Positive conditional cache size: 0, Positive unconditional cache size: 940, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 167 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.0s, OverallIterations: 44, TraceHistogramMax: 1, PathProgramHistogramMax: 44, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1225 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1225 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 679 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10201 IncrementalHoareTripleChecker+Invalid, 10880 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 679 mSolverCounterUnsat, 0 mSDtfsCounter, 10201 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 445 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4451occurred in iteration=20, InterpolantAutomatonStates: 432, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 1144 NumberOfCodeBlocks, 1144 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 1100 ConstructedInterpolants, 0 QuantifiedInterpolants, 4167 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 44 InterpolantComputations, 44 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 21:21:52,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...