./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:45:38,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:45:38,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:45:38,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:45:38,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:45:38,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:45:38,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:45:38,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:45:38,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:45:38,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:45:38,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:45:38,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:45:38,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:45:38,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:45:38,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:45:38,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:45:38,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:45:38,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:45:38,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:45:38,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:45:38,832 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:45:38,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:45:38,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:45:38,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:45:38,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:45:38,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:45:38,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:45:38,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:45:38,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:45:38,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:45:38,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:45:38,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:45:38,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:45:38,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:45:38,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:45:38,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:45:38,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:45:38,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:45:38,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:45:38,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:45:38,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:45:38,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:45:38,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:45:38,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:45:38,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:45:38,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:45:38,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:45:38,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:45:38,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:45:38,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:45:38,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:45:38,871 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:45:38,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:45:38,871 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:45:38,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:45:38,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:45:38,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:45:38,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:45:38,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:45:38,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:45:38,872 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:45:38,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:45:38,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:45:38,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:45:38,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:45:38,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:45:38,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:45:38,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:45:38,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:45:38,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:45:38,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:45:38,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:45:38,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:45:38,874 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:45:38,874 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:45:38,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:45:38,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2022-07-21 08:45:39,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:45:39,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:45:39,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:45:39,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:45:39,162 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:45:39,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-07-21 08:45:39,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/241ccff85/e26d258bdc084ce8b4314e9268027de7/FLAG132140b6e [2022-07-21 08:45:39,714 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:45:39,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-07-21 08:45:39,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/241ccff85/e26d258bdc084ce8b4314e9268027de7/FLAG132140b6e [2022-07-21 08:45:40,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/241ccff85/e26d258bdc084ce8b4314e9268027de7 [2022-07-21 08:45:40,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:45:40,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:45:40,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:45:40,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:45:40,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:45:40,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:45:40" (1/1) ... [2022-07-21 08:45:40,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759e9527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:40, skipping insertion in model container [2022-07-21 08:45:40,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:45:40" (1/1) ... [2022-07-21 08:45:40,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:45:40,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:45:40,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-07-21 08:45:40,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:45:40,904 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:45:40,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-07-21 08:45:40,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:45:41,023 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:45:41,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41 WrapperNode [2022-07-21 08:45:41,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:45:41,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:45:41,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:45:41,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:45:41,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,085 INFO L137 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-07-21 08:45:41,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:45:41,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:45:41,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:45:41,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:45:41,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:45:41,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:45:41,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:45:41,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:45:41,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (1/1) ... [2022-07-21 08:45:41,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:45:41,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:45:41,171 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) [2022-07-21 08:45:41,185 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 [2022-07-21 08:45:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:45:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:45:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:45:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:45:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 08:45:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:45:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:45:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-07-21 08:45:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-07-21 08:45:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:45:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:45:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:45:41,218 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:45:41,430 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:45:41,431 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:45:41,583 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:45:41,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:45:41,595 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:45:41,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:45:41 BoogieIcfgContainer [2022-07-21 08:45:41,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:45:41,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:45:41,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:45:41,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:45:41,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:45:40" (1/3) ... [2022-07-21 08:45:41,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c6e667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:45:41, skipping insertion in model container [2022-07-21 08:45:41,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:41" (2/3) ... [2022-07-21 08:45:41,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c6e667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:45:41, skipping insertion in model container [2022-07-21 08:45:41,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:45:41" (3/3) ... [2022-07-21 08:45:41,603 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2022-07-21 08:45:41,606 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:45:41,613 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:45:41,613 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-21 08:45:41,613 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:45:41,674 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:45:41,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 192 places, 194 transitions, 404 flow [2022-07-21 08:45:41,780 INFO L129 PetriNetUnfolder]: 10/239 cut-off events. [2022-07-21 08:45:41,781 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:45:41,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 10/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 390 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-07-21 08:45:41,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 194 transitions, 404 flow [2022-07-21 08:45:41,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 180 transitions, 372 flow [2022-07-21 08:45:41,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:45:41,802 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=true, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fff63b7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27c8a9f0 [2022-07-21 08:45:41,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-21 08:45:41,814 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2022-07-21 08:45:41,814 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:45:41,814 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:41,815 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:41,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash -974822883, now seen corresponding path program 1 times [2022-07-21 08:45:41,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:41,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378004489] [2022-07-21 08:45:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:41,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:42,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:42,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378004489] [2022-07-21 08:45:42,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378004489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:42,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:42,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:45:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752514302] [2022-07-21 08:45:42,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:42,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:45:42,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:42,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:45:42,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:45:42,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-07-21 08:45:42,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 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) [2022-07-21 08:45:42,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:42,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-07-21 08:45:42,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:42,574 INFO L129 PetriNetUnfolder]: 361/1044 cut-off events. [2022-07-21 08:45:42,575 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-21 08:45:42,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1044 events. 361/1044 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6091 event pairs, 216 based on Foata normal form. 20/1009 useless extension candidates. Maximal degree in co-relation 1486. Up to 397 conditions per place. [2022-07-21 08:45:42,585 INFO L132 encePairwiseOnDemand]: 172/194 looper letters, 53 selfloop transitions, 17 changer transitions 1/176 dead transitions. [2022-07-21 08:45:42,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 176 transitions, 506 flow [2022-07-21 08:45:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:45:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:45:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1129 transitions. [2022-07-21 08:45:42,602 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6466208476517755 [2022-07-21 08:45:42,603 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1129 transitions. [2022-07-21 08:45:42,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1129 transitions. [2022-07-21 08:45:42,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:42,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1129 transitions. [2022-07-21 08:45:42,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 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) [2022-07-21 08:45:42,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 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) [2022-07-21 08:45:42,622 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 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) [2022-07-21 08:45:42,623 INFO L186 Difference]: Start difference. First operand has 180 places, 180 transitions, 372 flow. Second operand 9 states and 1129 transitions. [2022-07-21 08:45:42,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 176 transitions, 506 flow [2022-07-21 08:45:42,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 176 transitions, 498 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:45:42,634 INFO L242 Difference]: Finished difference. Result has 178 places, 169 transitions, 383 flow [2022-07-21 08:45:42,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=383, PETRI_PLACES=178, PETRI_TRANSITIONS=169} [2022-07-21 08:45:42,638 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, -2 predicate places. [2022-07-21 08:45:42,639 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 169 transitions, 383 flow [2022-07-21 08:45:42,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 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) [2022-07-21 08:45:42,640 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:42,640 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:42,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:45:42,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2102646053, now seen corresponding path program 1 times [2022-07-21 08:45:42,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:42,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116891935] [2022-07-21 08:45:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:42,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:42,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:42,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116891935] [2022-07-21 08:45:42,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116891935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:42,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:42,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:45:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153425647] [2022-07-21 08:45:42,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:42,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:45:42,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:45:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:45:42,743 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-07-21 08:45:42,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 169 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 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) [2022-07-21 08:45:42,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:42,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-07-21 08:45:42,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:42,938 INFO L129 PetriNetUnfolder]: 361/1014 cut-off events. [2022-07-21 08:45:42,939 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-21 08:45:42,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 1014 events. 361/1014 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5751 event pairs, 120 based on Foata normal form. 1/980 useless extension candidates. Maximal degree in co-relation 881. Up to 261 conditions per place. [2022-07-21 08:45:42,944 INFO L132 encePairwiseOnDemand]: 175/194 looper letters, 61 selfloop transitions, 18 changer transitions 1/184 dead transitions. [2022-07-21 08:45:42,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 184 transitions, 575 flow [2022-07-21 08:45:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:45:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:45:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2022-07-21 08:45:42,954 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6448453608247423 [2022-07-21 08:45:42,954 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2022-07-21 08:45:42,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2022-07-21 08:45:42,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:42,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2022-07-21 08:45:42,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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) [2022-07-21 08:45:42,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 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) [2022-07-21 08:45:42,960 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 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) [2022-07-21 08:45:42,960 INFO L186 Difference]: Start difference. First operand has 178 places, 169 transitions, 383 flow. Second operand 10 states and 1251 transitions. [2022-07-21 08:45:42,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 184 transitions, 575 flow [2022-07-21 08:45:42,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 184 transitions, 546 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-21 08:45:42,965 INFO L242 Difference]: Finished difference. Result has 179 places, 168 transitions, 394 flow [2022-07-21 08:45:42,965 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=394, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-07-21 08:45:42,966 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, -1 predicate places. [2022-07-21 08:45:42,966 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 394 flow [2022-07-21 08:45:42,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 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) [2022-07-21 08:45:42,967 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:42,967 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:42,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:45:42,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2061215173, now seen corresponding path program 1 times [2022-07-21 08:45:42,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:42,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143621554] [2022-07-21 08:45:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:42,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:43,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:43,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143621554] [2022-07-21 08:45:43,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143621554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:43,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:43,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:45:43,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439084503] [2022-07-21 08:45:43,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:43,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:45:43,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:43,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:45:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:45:43,051 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-07-21 08:45:43,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 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) [2022-07-21 08:45:43,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:43,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-07-21 08:45:43,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:43,418 INFO L129 PetriNetUnfolder]: 832/2091 cut-off events. [2022-07-21 08:45:43,418 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-07-21 08:45:43,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3834 conditions, 2091 events. 832/2091 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14002 event pairs, 169 based on Foata normal form. 32/2090 useless extension candidates. Maximal degree in co-relation 1026. Up to 499 conditions per place. [2022-07-21 08:45:43,430 INFO L132 encePairwiseOnDemand]: 173/194 looper letters, 100 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2022-07-21 08:45:43,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 253 transitions, 878 flow [2022-07-21 08:45:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:45:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:45:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1644 transitions. [2022-07-21 08:45:43,435 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6518636003172086 [2022-07-21 08:45:43,435 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1644 transitions. [2022-07-21 08:45:43,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1644 transitions. [2022-07-21 08:45:43,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:43,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1644 transitions. [2022-07-21 08:45:43,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.46153846153847) internal successors, (1644), 13 states have internal predecessors, (1644), 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) [2022-07-21 08:45:43,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 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) [2022-07-21 08:45:43,446 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 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) [2022-07-21 08:45:43,446 INFO L186 Difference]: Start difference. First operand has 179 places, 168 transitions, 394 flow. Second operand 13 states and 1644 transitions. [2022-07-21 08:45:43,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 253 transitions, 878 flow [2022-07-21 08:45:43,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 253 transitions, 832 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-21 08:45:43,455 INFO L242 Difference]: Finished difference. Result has 191 places, 205 transitions, 664 flow [2022-07-21 08:45:43,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=664, PETRI_PLACES=191, PETRI_TRANSITIONS=205} [2022-07-21 08:45:43,457 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 11 predicate places. [2022-07-21 08:45:43,458 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 205 transitions, 664 flow [2022-07-21 08:45:43,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 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) [2022-07-21 08:45:43,458 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:43,459 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:43,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:45:43,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:43,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:43,460 INFO L85 PathProgramCache]: Analyzing trace with hash 856568329, now seen corresponding path program 1 times [2022-07-21 08:45:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:43,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105040419] [2022-07-21 08:45:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:43,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:43,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:43,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105040419] [2022-07-21 08:45:43,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105040419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:43,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:43,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:45:43,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137427419] [2022-07-21 08:45:43,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:43,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:45:43,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:43,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:45:43,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:45:43,565 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-07-21 08:45:43,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 664 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 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) [2022-07-21 08:45:43,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:43,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-07-21 08:45:43,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:44,006 INFO L129 PetriNetUnfolder]: 1084/2665 cut-off events. [2022-07-21 08:45:44,006 INFO L130 PetriNetUnfolder]: For 10877/10958 co-relation queries the response was YES. [2022-07-21 08:45:44,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9159 conditions, 2665 events. 1084/2665 cut-off events. For 10877/10958 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19180 event pairs, 218 based on Foata normal form. 47/2679 useless extension candidates. Maximal degree in co-relation 7850. Up to 732 conditions per place. [2022-07-21 08:45:44,037 INFO L132 encePairwiseOnDemand]: 175/194 looper letters, 74 selfloop transitions, 48 changer transitions 69/294 dead transitions. [2022-07-21 08:45:44,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 294 transitions, 1748 flow [2022-07-21 08:45:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:45:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:45:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1395 transitions. [2022-07-21 08:45:44,041 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6537019681349578 [2022-07-21 08:45:44,041 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1395 transitions. [2022-07-21 08:45:44,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1395 transitions. [2022-07-21 08:45:44,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:44,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1395 transitions. [2022-07-21 08:45:44,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.81818181818181) internal successors, (1395), 11 states have internal predecessors, (1395), 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) [2022-07-21 08:45:44,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 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) [2022-07-21 08:45:44,047 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 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) [2022-07-21 08:45:44,048 INFO L186 Difference]: Start difference. First operand has 191 places, 205 transitions, 664 flow. Second operand 11 states and 1395 transitions. [2022-07-21 08:45:44,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 294 transitions, 1748 flow [2022-07-21 08:45:44,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 294 transitions, 1748 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:45:44,063 INFO L242 Difference]: Finished difference. Result has 209 places, 211 transitions, 977 flow [2022-07-21 08:45:44,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=977, PETRI_PLACES=209, PETRI_TRANSITIONS=211} [2022-07-21 08:45:44,064 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 29 predicate places. [2022-07-21 08:45:44,064 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 211 transitions, 977 flow [2022-07-21 08:45:44,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 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) [2022-07-21 08:45:44,064 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:44,065 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:44,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:45:44,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:44,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1190557847, now seen corresponding path program 1 times [2022-07-21 08:45:44,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:44,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532313157] [2022-07-21 08:45:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:44,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:44,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:44,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532313157] [2022-07-21 08:45:44,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532313157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:44,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:44,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:45:44,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681712744] [2022-07-21 08:45:44,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:44,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:45:44,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:44,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:45:44,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:45:44,138 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 194 [2022-07-21 08:45:44,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 211 transitions, 977 flow. Second operand has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 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) [2022-07-21 08:45:44,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:44,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 194 [2022-07-21 08:45:44,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:44,180 INFO L129 PetriNetUnfolder]: 4/167 cut-off events. [2022-07-21 08:45:44,181 INFO L130 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2022-07-21 08:45:44,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 167 events. 4/167 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 188 event pairs, 4 based on Foata normal form. 8/173 useless extension candidates. Maximal degree in co-relation 336. Up to 13 conditions per place. [2022-07-21 08:45:44,182 INFO L132 encePairwiseOnDemand]: 189/194 looper letters, 9 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-07-21 08:45:44,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 139 transitions, 436 flow [2022-07-21 08:45:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:45:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:45:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1016 transitions. [2022-07-21 08:45:44,184 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.872852233676976 [2022-07-21 08:45:44,185 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1016 transitions. [2022-07-21 08:45:44,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1016 transitions. [2022-07-21 08:45:44,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:44,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1016 transitions. [2022-07-21 08:45:44,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 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) [2022-07-21 08:45:44,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 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) [2022-07-21 08:45:44,189 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 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) [2022-07-21 08:45:44,189 INFO L186 Difference]: Start difference. First operand has 209 places, 211 transitions, 977 flow. Second operand 6 states and 1016 transitions. [2022-07-21 08:45:44,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 139 transitions, 436 flow [2022-07-21 08:45:44,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 139 transitions, 316 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-07-21 08:45:44,192 INFO L242 Difference]: Finished difference. Result has 152 places, 139 transitions, 298 flow [2022-07-21 08:45:44,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-07-21 08:45:44,193 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, -28 predicate places. [2022-07-21 08:45:44,193 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 298 flow [2022-07-21 08:45:44,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 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) [2022-07-21 08:45:44,194 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:44,194 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:44,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:45:44,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash 241276256, now seen corresponding path program 1 times [2022-07-21 08:45:44,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:44,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969906732] [2022-07-21 08:45:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:44,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969906732] [2022-07-21 08:45:44,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969906732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:44,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:44,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 08:45:44,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900429511] [2022-07-21 08:45:44,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:44,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:45:44,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:44,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:45:44,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:45:44,704 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-21 08:45:44,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 298 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:44,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:44,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-21 08:45:44,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:45,412 INFO L129 PetriNetUnfolder]: 460/1290 cut-off events. [2022-07-21 08:45:45,412 INFO L130 PetriNetUnfolder]: For 162/165 co-relation queries the response was YES. [2022-07-21 08:45:45,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 1290 events. 460/1290 cut-off events. For 162/165 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7487 event pairs, 200 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 2408. Up to 363 conditions per place. [2022-07-21 08:45:45,418 INFO L132 encePairwiseOnDemand]: 172/194 looper letters, 104 selfloop transitions, 25 changer transitions 0/200 dead transitions. [2022-07-21 08:45:45,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 200 transitions, 708 flow [2022-07-21 08:45:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:45:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:45:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1840 transitions. [2022-07-21 08:45:45,422 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5269186712485682 [2022-07-21 08:45:45,422 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1840 transitions. [2022-07-21 08:45:45,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1840 transitions. [2022-07-21 08:45:45,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:45,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1840 transitions. [2022-07-21 08:45:45,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 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) [2022-07-21 08:45:45,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 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) [2022-07-21 08:45:45,430 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 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) [2022-07-21 08:45:45,430 INFO L186 Difference]: Start difference. First operand has 152 places, 139 transitions, 298 flow. Second operand 18 states and 1840 transitions. [2022-07-21 08:45:45,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 200 transitions, 708 flow [2022-07-21 08:45:45,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 200 transitions, 701 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:45:45,435 INFO L242 Difference]: Finished difference. Result has 175 places, 153 transitions, 424 flow [2022-07-21 08:45:45,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=424, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2022-07-21 08:45:45,437 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, -5 predicate places. [2022-07-21 08:45:45,437 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 424 flow [2022-07-21 08:45:45,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:45,438 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:45,438 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:45,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:45:45,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash 462011866, now seen corresponding path program 2 times [2022-07-21 08:45:45,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:45,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462325498] [2022-07-21 08:45:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:45,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:45,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:45,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462325498] [2022-07-21 08:45:45,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462325498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:45,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:45,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 08:45:45,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786221736] [2022-07-21 08:45:45,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:45,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:45:45,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:45:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:45:45,858 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-21 08:45:45,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 424 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:45,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:45,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-21 08:45:45,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:46,621 INFO L129 PetriNetUnfolder]: 608/1723 cut-off events. [2022-07-21 08:45:46,622 INFO L130 PetriNetUnfolder]: For 838/848 co-relation queries the response was YES. [2022-07-21 08:45:46,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 1723 events. 608/1723 cut-off events. For 838/848 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11540 event pairs, 106 based on Foata normal form. 11/1705 useless extension candidates. Maximal degree in co-relation 3617. Up to 354 conditions per place. [2022-07-21 08:45:46,633 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 124 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2022-07-21 08:45:46,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 226 transitions, 1005 flow [2022-07-21 08:45:46,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:45:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:45:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1748 transitions. [2022-07-21 08:45:46,637 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.530018192844148 [2022-07-21 08:45:46,637 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1748 transitions. [2022-07-21 08:45:46,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1748 transitions. [2022-07-21 08:45:46,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:46,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1748 transitions. [2022-07-21 08:45:46,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.82352941176471) internal successors, (1748), 17 states have internal predecessors, (1748), 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) [2022-07-21 08:45:46,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 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) [2022-07-21 08:45:46,645 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 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) [2022-07-21 08:45:46,645 INFO L186 Difference]: Start difference. First operand has 175 places, 153 transitions, 424 flow. Second operand 17 states and 1748 transitions. [2022-07-21 08:45:46,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 226 transitions, 1005 flow [2022-07-21 08:45:46,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 226 transitions, 992 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-21 08:45:46,651 INFO L242 Difference]: Finished difference. Result has 194 places, 168 transitions, 594 flow [2022-07-21 08:45:46,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=594, PETRI_PLACES=194, PETRI_TRANSITIONS=168} [2022-07-21 08:45:46,651 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 14 predicate places. [2022-07-21 08:45:46,652 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 168 transitions, 594 flow [2022-07-21 08:45:46,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:46,653 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:46,653 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:46,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:45:46,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1335065666, now seen corresponding path program 3 times [2022-07-21 08:45:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:46,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858561103] [2022-07-21 08:45:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:47,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858561103] [2022-07-21 08:45:47,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858561103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:47,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:47,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 08:45:47,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701829967] [2022-07-21 08:45:47,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:47,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:45:47,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:45:47,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:45:47,005 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-21 08:45:47,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 168 transitions, 594 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:47,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:47,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-21 08:45:47,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:47,857 INFO L129 PetriNetUnfolder]: 830/2448 cut-off events. [2022-07-21 08:45:47,857 INFO L130 PetriNetUnfolder]: For 2364/2392 co-relation queries the response was YES. [2022-07-21 08:45:47,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5827 conditions, 2448 events. 830/2448 cut-off events. For 2364/2392 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 18325 event pairs, 355 based on Foata normal form. 21/2422 useless extension candidates. Maximal degree in co-relation 5802. Up to 758 conditions per place. [2022-07-21 08:45:47,869 INFO L132 encePairwiseOnDemand]: 172/194 looper letters, 131 selfloop transitions, 38 changer transitions 0/241 dead transitions. [2022-07-21 08:45:47,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 241 transitions, 1283 flow [2022-07-21 08:45:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:45:47,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:45:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1843 transitions. [2022-07-21 08:45:47,873 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2022-07-21 08:45:47,873 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1843 transitions. [2022-07-21 08:45:47,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1843 transitions. [2022-07-21 08:45:47,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:47,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1843 transitions. [2022-07-21 08:45:47,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.38888888888889) internal successors, (1843), 18 states have internal predecessors, (1843), 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) [2022-07-21 08:45:47,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 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) [2022-07-21 08:45:47,881 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 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) [2022-07-21 08:45:47,881 INFO L186 Difference]: Start difference. First operand has 194 places, 168 transitions, 594 flow. Second operand 18 states and 1843 transitions. [2022-07-21 08:45:47,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 241 transitions, 1283 flow [2022-07-21 08:45:47,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 241 transitions, 1253 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-07-21 08:45:47,889 INFO L242 Difference]: Finished difference. Result has 215 places, 185 transitions, 815 flow [2022-07-21 08:45:47,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=815, PETRI_PLACES=215, PETRI_TRANSITIONS=185} [2022-07-21 08:45:47,890 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 35 predicate places. [2022-07-21 08:45:47,890 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 185 transitions, 815 flow [2022-07-21 08:45:47,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:47,891 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:47,891 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:47,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:45:47,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1985637228, now seen corresponding path program 4 times [2022-07-21 08:45:47,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:47,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692515293] [2022-07-21 08:45:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:47,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:48,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:48,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692515293] [2022-07-21 08:45:48,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692515293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:48,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:48,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 08:45:48,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130833951] [2022-07-21 08:45:48,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:48,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:45:48,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:48,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:45:48,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:45:48,205 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-21 08:45:48,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 185 transitions, 815 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:48,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:48,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-21 08:45:48,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:49,145 INFO L129 PetriNetUnfolder]: 1021/3123 cut-off events. [2022-07-21 08:45:49,145 INFO L130 PetriNetUnfolder]: For 4418/4460 co-relation queries the response was YES. [2022-07-21 08:45:49,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7868 conditions, 3123 events. 1021/3123 cut-off events. For 4418/4460 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 25535 event pairs, 138 based on Foata normal form. 29/3117 useless extension candidates. Maximal degree in co-relation 7832. Up to 576 conditions per place. [2022-07-21 08:45:49,169 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 168 selfloop transitions, 58 changer transitions 0/298 dead transitions. [2022-07-21 08:45:49,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 298 transitions, 1885 flow [2022-07-21 08:45:49,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:45:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:45:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1967 transitions. [2022-07-21 08:45:49,177 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5336408030385241 [2022-07-21 08:45:49,177 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1967 transitions. [2022-07-21 08:45:49,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1967 transitions. [2022-07-21 08:45:49,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:49,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1967 transitions. [2022-07-21 08:45:49,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.52631578947368) internal successors, (1967), 19 states have internal predecessors, (1967), 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) [2022-07-21 08:45:49,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:45:49,200 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:45:49,200 INFO L186 Difference]: Start difference. First operand has 215 places, 185 transitions, 815 flow. Second operand 19 states and 1967 transitions. [2022-07-21 08:45:49,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 298 transitions, 1885 flow [2022-07-21 08:45:49,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 298 transitions, 1850 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-07-21 08:45:49,221 INFO L242 Difference]: Finished difference. Result has 235 places, 210 transitions, 1217 flow [2022-07-21 08:45:49,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1217, PETRI_PLACES=235, PETRI_TRANSITIONS=210} [2022-07-21 08:45:49,223 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 55 predicate places. [2022-07-21 08:45:49,223 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 210 transitions, 1217 flow [2022-07-21 08:45:49,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:49,228 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:49,229 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:49,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:45:49,229 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:49,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash 260541270, now seen corresponding path program 5 times [2022-07-21 08:45:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:49,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885904744] [2022-07-21 08:45:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:49,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:49,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885904744] [2022-07-21 08:45:49,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885904744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:49,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:49,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 08:45:49,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907245815] [2022-07-21 08:45:49,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:49,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:45:49,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:45:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:45:49,604 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-21 08:45:49,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 210 transitions, 1217 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:49,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:49,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-21 08:45:49,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:50,565 INFO L129 PetriNetUnfolder]: 1024/3251 cut-off events. [2022-07-21 08:45:50,566 INFO L130 PetriNetUnfolder]: For 7394/7430 co-relation queries the response was YES. [2022-07-21 08:45:50,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8832 conditions, 3251 events. 1024/3251 cut-off events. For 7394/7430 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 26703 event pairs, 376 based on Foata normal form. 29/3226 useless extension candidates. Maximal degree in co-relation 8789. Up to 817 conditions per place. [2022-07-21 08:45:50,587 INFO L132 encePairwiseOnDemand]: 171/194 looper letters, 175 selfloop transitions, 61 changer transitions 0/308 dead transitions. [2022-07-21 08:45:50,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 308 transitions, 2304 flow [2022-07-21 08:45:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:45:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:45:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1958 transitions. [2022-07-21 08:45:50,590 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5311991318502441 [2022-07-21 08:45:50,590 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1958 transitions. [2022-07-21 08:45:50,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1958 transitions. [2022-07-21 08:45:50,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:50,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1958 transitions. [2022-07-21 08:45:50,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.05263157894737) internal successors, (1958), 19 states have internal predecessors, (1958), 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) [2022-07-21 08:45:50,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:45:50,599 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:45:50,599 INFO L186 Difference]: Start difference. First operand has 235 places, 210 transitions, 1217 flow. Second operand 19 states and 1958 transitions. [2022-07-21 08:45:50,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 308 transitions, 2304 flow [2022-07-21 08:45:50,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 308 transitions, 2232 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-07-21 08:45:50,623 INFO L242 Difference]: Finished difference. Result has 256 places, 231 transitions, 1615 flow [2022-07-21 08:45:50,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1615, PETRI_PLACES=256, PETRI_TRANSITIONS=231} [2022-07-21 08:45:50,624 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 76 predicate places. [2022-07-21 08:45:50,624 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 231 transitions, 1615 flow [2022-07-21 08:45:50,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:50,625 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:50,625 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:50,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:45:50,626 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:50,626 INFO L85 PathProgramCache]: Analyzing trace with hash -947966482, now seen corresponding path program 6 times [2022-07-21 08:45:50,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:50,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168269119] [2022-07-21 08:45:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:50,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:51,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:51,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168269119] [2022-07-21 08:45:51,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168269119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:51,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:51,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:45:51,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060190976] [2022-07-21 08:45:51,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:51,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:45:51,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:51,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:45:51,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:45:51,036 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-21 08:45:51,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 231 transitions, 1615 flow. Second operand has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 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) [2022-07-21 08:45:51,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:51,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-21 08:45:51,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:52,914 INFO L129 PetriNetUnfolder]: 2707/7011 cut-off events. [2022-07-21 08:45:52,917 INFO L130 PetriNetUnfolder]: For 19541/19541 co-relation queries the response was YES. [2022-07-21 08:45:52,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19568 conditions, 7011 events. 2707/7011 cut-off events. For 19541/19541 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 63931 event pairs, 563 based on Foata normal form. 1/6930 useless extension candidates. Maximal degree in co-relation 19515. Up to 2726 conditions per place. [2022-07-21 08:45:52,965 INFO L132 encePairwiseOnDemand]: 168/194 looper letters, 236 selfloop transitions, 80 changer transitions 0/383 dead transitions. [2022-07-21 08:45:52,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 383 transitions, 3414 flow [2022-07-21 08:45:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:45:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:45:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1907 transitions. [2022-07-21 08:45:52,968 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5173629951166576 [2022-07-21 08:45:52,968 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1907 transitions. [2022-07-21 08:45:52,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1907 transitions. [2022-07-21 08:45:52,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:52,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1907 transitions. [2022-07-21 08:45:52,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 100.36842105263158) internal successors, (1907), 19 states have internal predecessors, (1907), 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) [2022-07-21 08:45:52,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:45:52,975 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:45:52,975 INFO L186 Difference]: Start difference. First operand has 256 places, 231 transitions, 1615 flow. Second operand 19 states and 1907 transitions. [2022-07-21 08:45:52,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 383 transitions, 3414 flow [2022-07-21 08:45:53,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 383 transitions, 3322 flow, removed 28 selfloop flow, removed 6 redundant places. [2022-07-21 08:45:53,038 INFO L242 Difference]: Finished difference. Result has 278 places, 270 transitions, 2334 flow [2022-07-21 08:45:53,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2334, PETRI_PLACES=278, PETRI_TRANSITIONS=270} [2022-07-21 08:45:53,039 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 98 predicate places. [2022-07-21 08:45:53,039 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 270 transitions, 2334 flow [2022-07-21 08:45:53,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 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) [2022-07-21 08:45:53,040 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:53,040 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:53,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:45:53,041 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1947432884, now seen corresponding path program 7 times [2022-07-21 08:45:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:53,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939758389] [2022-07-21 08:45:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:53,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:53,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939758389] [2022-07-21 08:45:53,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939758389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:53,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:53,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 08:45:53,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048193964] [2022-07-21 08:45:53,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:53,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:45:53,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:53,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:45:53,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:45:53,420 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-21 08:45:53,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 270 transitions, 2334 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:53,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:53,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-21 08:45:53,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:54,829 INFO L129 PetriNetUnfolder]: 2209/6724 cut-off events. [2022-07-21 08:45:54,830 INFO L130 PetriNetUnfolder]: For 27627/27846 co-relation queries the response was YES. [2022-07-21 08:45:54,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20265 conditions, 6724 events. 2209/6724 cut-off events. For 27627/27846 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 65818 event pairs, 625 based on Foata normal form. 135/6737 useless extension candidates. Maximal degree in co-relation 20203. Up to 2089 conditions per place. [2022-07-21 08:45:54,883 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 224 selfloop transitions, 90 changer transitions 0/390 dead transitions. [2022-07-21 08:45:54,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 390 transitions, 4301 flow [2022-07-21 08:45:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:45:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:45:54,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1745 transitions. [2022-07-21 08:45:54,886 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5291085506367496 [2022-07-21 08:45:54,887 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1745 transitions. [2022-07-21 08:45:54,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1745 transitions. [2022-07-21 08:45:54,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:54,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1745 transitions. [2022-07-21 08:45:54,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.6470588235294) internal successors, (1745), 17 states have internal predecessors, (1745), 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) [2022-07-21 08:45:54,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 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) [2022-07-21 08:45:54,892 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 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) [2022-07-21 08:45:54,892 INFO L186 Difference]: Start difference. First operand has 278 places, 270 transitions, 2334 flow. Second operand 17 states and 1745 transitions. [2022-07-21 08:45:54,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 390 transitions, 4301 flow [2022-07-21 08:45:54,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 390 transitions, 4218 flow, removed 32 selfloop flow, removed 6 redundant places. [2022-07-21 08:45:54,966 INFO L242 Difference]: Finished difference. Result has 296 places, 306 transitions, 3122 flow [2022-07-21 08:45:54,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3122, PETRI_PLACES=296, PETRI_TRANSITIONS=306} [2022-07-21 08:45:54,968 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 116 predicate places. [2022-07-21 08:45:54,968 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 306 transitions, 3122 flow [2022-07-21 08:45:54,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:45:54,968 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:54,968 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:54,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:45:54,968 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:54,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash 986122276, now seen corresponding path program 8 times [2022-07-21 08:45:54,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:54,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247460776] [2022-07-21 08:45:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:54,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:55,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:55,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247460776] [2022-07-21 08:45:55,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247460776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:55,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:55,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 08:45:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702812553] [2022-07-21 08:45:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:55,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 08:45:55,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 08:45:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 08:45:55,398 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 194 [2022-07-21 08:45:55,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 306 transitions, 3122 flow. Second operand has 13 states, 13 states have (on average 137.15384615384616) internal successors, (1783), 13 states have internal predecessors, (1783), 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) [2022-07-21 08:45:55,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:55,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 194 [2022-07-21 08:45:55,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:56,404 INFO L129 PetriNetUnfolder]: 1439/5287 cut-off events. [2022-07-21 08:45:56,404 INFO L130 PetriNetUnfolder]: For 29626/29691 co-relation queries the response was YES. [2022-07-21 08:45:56,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17512 conditions, 5287 events. 1439/5287 cut-off events. For 29626/29691 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 54141 event pairs, 345 based on Foata normal form. 62/5223 useless extension candidates. Maximal degree in co-relation 17442. Up to 1538 conditions per place. [2022-07-21 08:45:56,512 INFO L132 encePairwiseOnDemand]: 180/194 looper letters, 173 selfloop transitions, 30 changer transitions 0/410 dead transitions. [2022-07-21 08:45:56,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 410 transitions, 4801 flow [2022-07-21 08:45:56,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:45:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:45:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1835 transitions. [2022-07-21 08:45:56,524 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7275971451229183 [2022-07-21 08:45:56,524 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1835 transitions. [2022-07-21 08:45:56,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1835 transitions. [2022-07-21 08:45:56,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:56,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1835 transitions. [2022-07-21 08:45:56,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 141.15384615384616) internal successors, (1835), 13 states have internal predecessors, (1835), 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) [2022-07-21 08:45:56,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 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) [2022-07-21 08:45:56,530 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 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) [2022-07-21 08:45:56,530 INFO L186 Difference]: Start difference. First operand has 296 places, 306 transitions, 3122 flow. Second operand 13 states and 1835 transitions. [2022-07-21 08:45:56,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 410 transitions, 4801 flow [2022-07-21 08:45:56,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 410 transitions, 4732 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-07-21 08:45:56,619 INFO L242 Difference]: Finished difference. Result has 305 places, 315 transitions, 3218 flow [2022-07-21 08:45:56,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3218, PETRI_PLACES=305, PETRI_TRANSITIONS=315} [2022-07-21 08:45:56,620 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 125 predicate places. [2022-07-21 08:45:56,621 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 315 transitions, 3218 flow [2022-07-21 08:45:56,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.15384615384616) internal successors, (1783), 13 states have internal predecessors, (1783), 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) [2022-07-21 08:45:56,621 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:56,621 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:56,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:45:56,622 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:45:56,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:56,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2016136358, now seen corresponding path program 9 times [2022-07-21 08:45:56,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:56,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704539418] [2022-07-21 08:45:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:56,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:57,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:57,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704539418] [2022-07-21 08:45:57,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704539418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:57,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:57,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:45:57,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683907670] [2022-07-21 08:45:57,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:57,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:45:57,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:57,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:45:57,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:45:57,040 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-21 08:45:57,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 315 transitions, 3218 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2022-07-21 08:45:57,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:57,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-21 08:45:57,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:01,222 INFO L129 PetriNetUnfolder]: 5704/15331 cut-off events. [2022-07-21 08:46:01,222 INFO L130 PetriNetUnfolder]: For 70903/70972 co-relation queries the response was YES. [2022-07-21 08:46:01,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52988 conditions, 15331 events. 5704/15331 cut-off events. For 70903/70972 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 164920 event pairs, 1363 based on Foata normal form. 27/15222 useless extension candidates. Maximal degree in co-relation 52914. Up to 3092 conditions per place. [2022-07-21 08:46:01,393 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 500 selfloop transitions, 221 changer transitions 0/788 dead transitions. [2022-07-21 08:46:01,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 788 transitions, 9938 flow [2022-07-21 08:46:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 08:46:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-21 08:46:01,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3391 transitions. [2022-07-21 08:46:01,398 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5140994542146755 [2022-07-21 08:46:01,399 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3391 transitions. [2022-07-21 08:46:01,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3391 transitions. [2022-07-21 08:46:01,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:01,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3391 transitions. [2022-07-21 08:46:01,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 99.73529411764706) internal successors, (3391), 34 states have internal predecessors, (3391), 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) [2022-07-21 08:46:01,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 194.0) internal successors, (6790), 35 states have internal predecessors, (6790), 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) [2022-07-21 08:46:01,413 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 194.0) internal successors, (6790), 35 states have internal predecessors, (6790), 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) [2022-07-21 08:46:01,413 INFO L186 Difference]: Start difference. First operand has 305 places, 315 transitions, 3218 flow. Second operand 34 states and 3391 transitions. [2022-07-21 08:46:01,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 788 transitions, 9938 flow [2022-07-21 08:46:01,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 788 transitions, 9915 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-21 08:46:01,742 INFO L242 Difference]: Finished difference. Result has 352 places, 465 transitions, 6643 flow [2022-07-21 08:46:01,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6643, PETRI_PLACES=352, PETRI_TRANSITIONS=465} [2022-07-21 08:46:01,743 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 172 predicate places. [2022-07-21 08:46:01,743 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 465 transitions, 6643 flow [2022-07-21 08:46:01,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2022-07-21 08:46:01,744 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:01,744 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:01,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:46:01,744 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:46:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1481344092, now seen corresponding path program 10 times [2022-07-21 08:46:01,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:01,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342306305] [2022-07-21 08:46:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:01,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:02,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:02,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342306305] [2022-07-21 08:46:02,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342306305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:02,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:02,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:46:02,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107907139] [2022-07-21 08:46:02,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:02,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:46:02,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:46:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:46:02,225 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-21 08:46:02,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 465 transitions, 6643 flow. Second operand has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 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) [2022-07-21 08:46:02,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:02,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-21 08:46:02,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:07,207 INFO L129 PetriNetUnfolder]: 6878/18437 cut-off events. [2022-07-21 08:46:07,207 INFO L130 PetriNetUnfolder]: For 110443/110578 co-relation queries the response was YES. [2022-07-21 08:46:07,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67879 conditions, 18437 events. 6878/18437 cut-off events. For 110443/110578 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 206361 event pairs, 2215 based on Foata normal form. 67/18327 useless extension candidates. Maximal degree in co-relation 67784. Up to 9408 conditions per place. [2022-07-21 08:46:07,415 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 361 selfloop transitions, 217 changer transitions 0/645 dead transitions. [2022-07-21 08:46:07,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 645 transitions, 9811 flow [2022-07-21 08:46:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:46:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:46:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1898 transitions. [2022-07-21 08:46:07,418 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5149213239283776 [2022-07-21 08:46:07,418 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1898 transitions. [2022-07-21 08:46:07,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1898 transitions. [2022-07-21 08:46:07,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:07,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1898 transitions. [2022-07-21 08:46:07,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 99.89473684210526) internal successors, (1898), 19 states have internal predecessors, (1898), 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) [2022-07-21 08:46:07,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:46:07,425 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:46:07,425 INFO L186 Difference]: Start difference. First operand has 352 places, 465 transitions, 6643 flow. Second operand 19 states and 1898 transitions. [2022-07-21 08:46:07,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 645 transitions, 9811 flow [2022-07-21 08:46:08,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 645 transitions, 9623 flow, removed 88 selfloop flow, removed 4 redundant places. [2022-07-21 08:46:08,090 INFO L242 Difference]: Finished difference. Result has 376 places, 525 transitions, 8281 flow [2022-07-21 08:46:08,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=6479, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8281, PETRI_PLACES=376, PETRI_TRANSITIONS=525} [2022-07-21 08:46:08,091 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 196 predicate places. [2022-07-21 08:46:08,091 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 525 transitions, 8281 flow [2022-07-21 08:46:08,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 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) [2022-07-21 08:46:08,092 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:08,092 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:08,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:46:08,092 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:46:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:08,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1654887158, now seen corresponding path program 11 times [2022-07-21 08:46:08,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:08,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492547204] [2022-07-21 08:46:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:08,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:08,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:08,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492547204] [2022-07-21 08:46:08,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492547204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:08,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:08,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:46:08,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792656121] [2022-07-21 08:46:08,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:08,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:46:08,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:08,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:46:08,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:46:08,605 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-21 08:46:08,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 525 transitions, 8281 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2022-07-21 08:46:08,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:08,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-21 08:46:08,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:14,665 INFO L129 PetriNetUnfolder]: 6905/18529 cut-off events. [2022-07-21 08:46:14,665 INFO L130 PetriNetUnfolder]: For 128729/128827 co-relation queries the response was YES. [2022-07-21 08:46:14,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70637 conditions, 18529 events. 6905/18529 cut-off events. For 128729/128827 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 207754 event pairs, 1199 based on Foata normal form. 44/18399 useless extension candidates. Maximal degree in co-relation 70532. Up to 4507 conditions per place. [2022-07-21 08:46:14,909 INFO L132 encePairwiseOnDemand]: 165/194 looper letters, 443 selfloop transitions, 306 changer transitions 0/816 dead transitions. [2022-07-21 08:46:14,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 816 transitions, 13102 flow [2022-07-21 08:46:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 08:46:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-21 08:46:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2899 transitions. [2022-07-21 08:46:14,935 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.515286171347316 [2022-07-21 08:46:14,936 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2899 transitions. [2022-07-21 08:46:14,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2899 transitions. [2022-07-21 08:46:14,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:14,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2899 transitions. [2022-07-21 08:46:14,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 99.96551724137932) internal successors, (2899), 29 states have internal predecessors, (2899), 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) [2022-07-21 08:46:14,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 194.0) internal successors, (5820), 30 states have internal predecessors, (5820), 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) [2022-07-21 08:46:14,944 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 194.0) internal successors, (5820), 30 states have internal predecessors, (5820), 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) [2022-07-21 08:46:14,944 INFO L186 Difference]: Start difference. First operand has 376 places, 525 transitions, 8281 flow. Second operand 29 states and 2899 transitions. [2022-07-21 08:46:14,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 816 transitions, 13102 flow [2022-07-21 08:46:15,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 816 transitions, 12866 flow, removed 60 selfloop flow, removed 6 redundant places. [2022-07-21 08:46:15,638 INFO L242 Difference]: Finished difference. Result has 409 places, 617 transitions, 10839 flow [2022-07-21 08:46:15,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=8094, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10839, PETRI_PLACES=409, PETRI_TRANSITIONS=617} [2022-07-21 08:46:15,639 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 229 predicate places. [2022-07-21 08:46:15,639 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 617 transitions, 10839 flow [2022-07-21 08:46:15,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2022-07-21 08:46:15,640 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:15,640 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:15,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:46:15,640 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:46:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash 264014474, now seen corresponding path program 12 times [2022-07-21 08:46:15,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:15,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477636015] [2022-07-21 08:46:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:15,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:15,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:15,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477636015] [2022-07-21 08:46:15,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477636015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:15,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:15,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 08:46:15,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999345285] [2022-07-21 08:46:15,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:15,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:46:15,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:15,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:46:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:46:15,921 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-07-21 08:46:15,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 617 transitions, 10839 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:46:15,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:15,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-07-21 08:46:15,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:19,895 INFO L129 PetriNetUnfolder]: 4349/14657 cut-off events. [2022-07-21 08:46:19,896 INFO L130 PetriNetUnfolder]: For 125478/125745 co-relation queries the response was YES. [2022-07-21 08:46:20,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58061 conditions, 14657 events. 4349/14657 cut-off events. For 125478/125745 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 173665 event pairs, 827 based on Foata normal form. 189/14634 useless extension candidates. Maximal degree in co-relation 57945. Up to 2504 conditions per place. [2022-07-21 08:46:20,043 INFO L132 encePairwiseOnDemand]: 169/194 looper letters, 413 selfloop transitions, 315 changer transitions 0/836 dead transitions. [2022-07-21 08:46:20,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 836 transitions, 15812 flow [2022-07-21 08:46:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:46:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:46:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1964 transitions. [2022-07-21 08:46:20,045 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5328269126424309 [2022-07-21 08:46:20,045 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1964 transitions. [2022-07-21 08:46:20,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1964 transitions. [2022-07-21 08:46:20,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:20,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1964 transitions. [2022-07-21 08:46:20,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.36842105263158) internal successors, (1964), 19 states have internal predecessors, (1964), 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) [2022-07-21 08:46:20,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:46:20,050 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:46:20,050 INFO L186 Difference]: Start difference. First operand has 409 places, 617 transitions, 10839 flow. Second operand 19 states and 1964 transitions. [2022-07-21 08:46:20,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 836 transitions, 15812 flow [2022-07-21 08:46:20,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 836 transitions, 15512 flow, removed 113 selfloop flow, removed 7 redundant places. [2022-07-21 08:46:20,681 INFO L242 Difference]: Finished difference. Result has 428 places, 700 transitions, 13741 flow [2022-07-21 08:46:20,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=10610, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13741, PETRI_PLACES=428, PETRI_TRANSITIONS=700} [2022-07-21 08:46:20,681 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 248 predicate places. [2022-07-21 08:46:20,682 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 700 transitions, 13741 flow [2022-07-21 08:46:20,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 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) [2022-07-21 08:46:20,682 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:20,682 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:20,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:46:20,682 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:46:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:20,682 INFO L85 PathProgramCache]: Analyzing trace with hash 346283060, now seen corresponding path program 13 times [2022-07-21 08:46:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:20,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665872163] [2022-07-21 08:46:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:20,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:20,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665872163] [2022-07-21 08:46:20,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665872163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:20,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:20,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 08:46:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773086876] [2022-07-21 08:46:20,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:20,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 08:46:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 08:46:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 08:46:20,970 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 194 [2022-07-21 08:46:20,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 700 transitions, 13741 flow. Second operand has 13 states, 13 states have (on average 137.15384615384616) internal successors, (1783), 13 states have internal predecessors, (1783), 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) [2022-07-21 08:46:20,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:20,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 194 [2022-07-21 08:46:20,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:24,092 INFO L129 PetriNetUnfolder]: 2568/10745 cut-off events. [2022-07-21 08:46:24,093 INFO L130 PetriNetUnfolder]: For 134628/134815 co-relation queries the response was YES. [2022-07-21 08:46:24,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47973 conditions, 10745 events. 2568/10745 cut-off events. For 134628/134815 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 129910 event pairs, 859 based on Foata normal form. 70/10651 useless extension candidates. Maximal degree in co-relation 47848. Up to 3997 conditions per place. [2022-07-21 08:46:24,220 INFO L132 encePairwiseOnDemand]: 180/194 looper letters, 300 selfloop transitions, 79 changer transitions 0/822 dead transitions. [2022-07-21 08:46:24,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 822 transitions, 16265 flow [2022-07-21 08:46:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:46:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:46:24,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1977 transitions. [2022-07-21 08:46:24,225 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7279086892488954 [2022-07-21 08:46:24,225 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1977 transitions. [2022-07-21 08:46:24,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1977 transitions. [2022-07-21 08:46:24,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:24,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1977 transitions. [2022-07-21 08:46:24,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 141.21428571428572) internal successors, (1977), 14 states have internal predecessors, (1977), 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) [2022-07-21 08:46:24,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 194.0) internal successors, (2910), 15 states have internal predecessors, (2910), 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) [2022-07-21 08:46:24,229 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 194.0) internal successors, (2910), 15 states have internal predecessors, (2910), 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) [2022-07-21 08:46:24,229 INFO L186 Difference]: Start difference. First operand has 428 places, 700 transitions, 13741 flow. Second operand 14 states and 1977 transitions. [2022-07-21 08:46:24,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 822 transitions, 16265 flow [2022-07-21 08:46:25,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 822 transitions, 16078 flow, removed 79 selfloop flow, removed 6 redundant places. [2022-07-21 08:46:25,031 INFO L242 Difference]: Finished difference. Result has 438 places, 711 transitions, 13980 flow [2022-07-21 08:46:25,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=13454, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13980, PETRI_PLACES=438, PETRI_TRANSITIONS=711} [2022-07-21 08:46:25,033 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 258 predicate places. [2022-07-21 08:46:25,033 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 711 transitions, 13980 flow [2022-07-21 08:46:25,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.15384615384616) internal successors, (1783), 13 states have internal predecessors, (1783), 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) [2022-07-21 08:46:25,033 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:25,034 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:25,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:46:25,034 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:46:25,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:25,034 INFO L85 PathProgramCache]: Analyzing trace with hash -405297222, now seen corresponding path program 14 times [2022-07-21 08:46:25,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:25,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894842025] [2022-07-21 08:46:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:25,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:25,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:25,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894842025] [2022-07-21 08:46:25,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894842025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:25,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:25,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:46:25,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213249548] [2022-07-21 08:46:25,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:25,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:46:25,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:25,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:46:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:46:25,334 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 194 [2022-07-21 08:46:25,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 711 transitions, 13980 flow. Second operand has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 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) [2022-07-21 08:46:25,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:25,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 194 [2022-07-21 08:46:25,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:28,271 INFO L129 PetriNetUnfolder]: 2383/10810 cut-off events. [2022-07-21 08:46:28,272 INFO L130 PetriNetUnfolder]: For 120972/121237 co-relation queries the response was YES. [2022-07-21 08:46:28,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47647 conditions, 10810 events. 2383/10810 cut-off events. For 120972/121237 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 134553 event pairs, 677 based on Foata normal form. 62/10699 useless extension candidates. Maximal degree in co-relation 47518. Up to 2596 conditions per place. [2022-07-21 08:46:28,401 INFO L132 encePairwiseOnDemand]: 182/194 looper letters, 244 selfloop transitions, 84 changer transitions 0/840 dead transitions. [2022-07-21 08:46:28,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 840 transitions, 16309 flow [2022-07-21 08:46:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:46:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:46:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1650 transitions. [2022-07-21 08:46:28,402 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7731958762886598 [2022-07-21 08:46:28,402 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1650 transitions. [2022-07-21 08:46:28,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1650 transitions. [2022-07-21 08:46:28,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:28,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1650 transitions. [2022-07-21 08:46:28,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.0) internal successors, (1650), 11 states have internal predecessors, (1650), 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) [2022-07-21 08:46:28,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 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) [2022-07-21 08:46:28,406 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 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) [2022-07-21 08:46:28,406 INFO L186 Difference]: Start difference. First operand has 438 places, 711 transitions, 13980 flow. Second operand 11 states and 1650 transitions. [2022-07-21 08:46:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 840 transitions, 16309 flow [2022-07-21 08:46:29,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 840 transitions, 16200 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-21 08:46:29,168 INFO L242 Difference]: Finished difference. Result has 443 places, 720 transitions, 14224 flow [2022-07-21 08:46:29,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=13885, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14224, PETRI_PLACES=443, PETRI_TRANSITIONS=720} [2022-07-21 08:46:29,169 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 263 predicate places. [2022-07-21 08:46:29,169 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 720 transitions, 14224 flow [2022-07-21 08:46:29,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 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) [2022-07-21 08:46:29,169 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:29,169 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:29,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:46:29,170 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:46:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1126597044, now seen corresponding path program 15 times [2022-07-21 08:46:29,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:29,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690749598] [2022-07-21 08:46:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:29,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:29,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:29,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690749598] [2022-07-21 08:46:29,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690749598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:29,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:29,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:46:29,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801529020] [2022-07-21 08:46:29,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:29,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:46:29,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:29,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:46:29,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:46:29,676 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-21 08:46:29,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 720 transitions, 14224 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2022-07-21 08:46:29,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:29,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-21 08:46:29,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:37,135 INFO L129 PetriNetUnfolder]: 8216/23280 cut-off events. [2022-07-21 08:46:37,136 INFO L130 PetriNetUnfolder]: For 245444/245492 co-relation queries the response was YES. [2022-07-21 08:46:37,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104193 conditions, 23280 events. 8216/23280 cut-off events. For 245444/245492 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 276173 event pairs, 3774 based on Foata normal form. 15/23086 useless extension candidates. Maximal degree in co-relation 104061. Up to 7712 conditions per place. [2022-07-21 08:46:37,935 INFO L132 encePairwiseOnDemand]: 168/194 looper letters, 593 selfloop transitions, 291 changer transitions 0/951 dead transitions. [2022-07-21 08:46:37,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 951 transitions, 19353 flow [2022-07-21 08:46:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:46:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:46:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1913 transitions. [2022-07-21 08:46:37,937 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5189907759088442 [2022-07-21 08:46:37,937 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1913 transitions. [2022-07-21 08:46:37,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1913 transitions. [2022-07-21 08:46:37,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:37,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1913 transitions. [2022-07-21 08:46:37,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 100.6842105263158) internal successors, (1913), 19 states have internal predecessors, (1913), 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) [2022-07-21 08:46:37,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:46:37,942 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 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) [2022-07-21 08:46:37,942 INFO L186 Difference]: Start difference. First operand has 443 places, 720 transitions, 14224 flow. Second operand 19 states and 1913 transitions. [2022-07-21 08:46:37,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 951 transitions, 19353 flow [2022-07-21 08:46:39,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 951 transitions, 19219 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-21 08:46:39,639 INFO L242 Difference]: Finished difference. Result has 465 places, 795 transitions, 16833 flow [2022-07-21 08:46:39,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=14106, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=16833, PETRI_PLACES=465, PETRI_TRANSITIONS=795} [2022-07-21 08:46:39,640 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 285 predicate places. [2022-07-21 08:46:39,640 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 795 transitions, 16833 flow [2022-07-21 08:46:39,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2022-07-21 08:46:39,641 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:39,641 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:39,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:46:39,641 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:46:39,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:39,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1935650414, now seen corresponding path program 16 times [2022-07-21 08:46:39,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:39,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651871912] [2022-07-21 08:46:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:39,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:39,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:39,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651871912] [2022-07-21 08:46:39,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651871912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:39,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:39,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 08:46:39,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37185312] [2022-07-21 08:46:39,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:39,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 08:46:39,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:39,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 08:46:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:46:39,881 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 194 [2022-07-21 08:46:39,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 795 transitions, 16833 flow. Second operand has 12 states, 12 states have (on average 137.41666666666666) internal successors, (1649), 12 states have internal predecessors, (1649), 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) [2022-07-21 08:46:39,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:39,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 194 [2022-07-21 08:46:39,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:43,578 INFO L129 PetriNetUnfolder]: 2662/11616 cut-off events. [2022-07-21 08:46:43,578 INFO L130 PetriNetUnfolder]: For 168465/168691 co-relation queries the response was YES. [2022-07-21 08:46:43,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55916 conditions, 11616 events. 2662/11616 cut-off events. For 168465/168691 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 144175 event pairs, 1464 based on Foata normal form. 92/11515 useless extension candidates. Maximal degree in co-relation 55774. Up to 5074 conditions per place. [2022-07-21 08:46:43,746 INFO L132 encePairwiseOnDemand]: 180/194 looper letters, 252 selfloop transitions, 125 changer transitions 0/840 dead transitions. [2022-07-21 08:46:43,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 840 transitions, 17748 flow [2022-07-21 08:46:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:46:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:46:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1975 transitions. [2022-07-21 08:46:43,748 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7271723122238586 [2022-07-21 08:46:43,748 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1975 transitions. [2022-07-21 08:46:43,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1975 transitions. [2022-07-21 08:46:43,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:43,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1975 transitions. [2022-07-21 08:46:43,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 141.07142857142858) internal successors, (1975), 14 states have internal predecessors, (1975), 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) [2022-07-21 08:46:43,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 194.0) internal successors, (2910), 15 states have internal predecessors, (2910), 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) [2022-07-21 08:46:43,752 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 194.0) internal successors, (2910), 15 states have internal predecessors, (2910), 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) [2022-07-21 08:46:43,752 INFO L186 Difference]: Start difference. First operand has 465 places, 795 transitions, 16833 flow. Second operand 14 states and 1975 transitions. [2022-07-21 08:46:43,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 840 transitions, 17748 flow [2022-07-21 08:46:44,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 840 transitions, 17473 flow, removed 119 selfloop flow, removed 5 redundant places. [2022-07-21 08:46:44,834 INFO L242 Difference]: Finished difference. Result has 475 places, 772 transitions, 16226 flow [2022-07-21 08:46:44,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=15874, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=16226, PETRI_PLACES=475, PETRI_TRANSITIONS=772} [2022-07-21 08:46:44,835 INFO L279 CegarLoopForPetriNet]: 180 programPoint places, 295 predicate places. [2022-07-21 08:46:44,835 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 772 transitions, 16226 flow [2022-07-21 08:46:44,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 137.41666666666666) internal successors, (1649), 12 states have internal predecessors, (1649), 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) [2022-07-21 08:46:44,835 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:44,835 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:44,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:46:44,836 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-21 08:46:44,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1320962584, now seen corresponding path program 17 times [2022-07-21 08:46:44,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:44,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327737832] [2022-07-21 08:46:44,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:45,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:45,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327737832] [2022-07-21 08:46:45,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327737832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:45,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:45,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:46:45,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115540075] [2022-07-21 08:46:45,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:45,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:46:45,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:45,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:46:45,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:46:45,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-07-21 08:46:45,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 772 transitions, 16226 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2022-07-21 08:46:45,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:45,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-07-21 08:46:45,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand