/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:04:45,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:04:45,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:04:45,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:04:45,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:04:45,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:04:45,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:04:45,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:04:45,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:04:45,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:04:45,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:04:45,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:04:45,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:04:45,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:04:45,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:04:45,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:04:45,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:04:45,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:04:45,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:04:45,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:04:45,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:04:45,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:04:45,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:04:45,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:04:45,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:04:45,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:04:45,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:04:45,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:04:45,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:04:45,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:04:45,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:04:45,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:04:45,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:04:45,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:04:45,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:04:45,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:04:45,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:04:45,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:04:45,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:04:45,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:04:45,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:04:45,269 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:04:45,293 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:04:45,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:04:45,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:04:45,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:04:45,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:04:45,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:04:45,296 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:04:45,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:04:45,296 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:04:45,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:04:45,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:04:45,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:04:45,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:04:45,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:04:45,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:04:45,297 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:04:45,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:04:45,298 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:04:45,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:04:45,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:04:45,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:04:45,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:04:45,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:04:45,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:45,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:04:45,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:04:45,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:04:45,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:04:45,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:04:45,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:04:45,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:04:45,300 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:04:45,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:04:45,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:04:45,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:04:45,533 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:04:45,536 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:04:45,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-01-28 07:04:46,675 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:04:46,998 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:04:46,999 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-01-28 07:04:47,019 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99d199ad/af41c0d8374a44978b5f99c66d63d769/FLAGd4fba5e04 [2023-01-28 07:04:47,033 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99d199ad/af41c0d8374a44978b5f99c66d63d769 [2023-01-28 07:04:47,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:04:47,037 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:04:47,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:47,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:04:47,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:04:47,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c957695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47, skipping insertion in model container [2023-01-28 07:04:47,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:04:47,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:04:47,638 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-01-28 07:04:47,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:47,698 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:04:47,753 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-01-28 07:04:47,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:47,902 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:04:47,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47 WrapperNode [2023-01-28 07:04:47,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:47,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:47,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:04:47,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:04:47,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,957 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2023-01-28 07:04:47,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:47,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:04:47,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:04:47,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:04:47,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:48,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:48,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:04:48,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:04:48,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:04:48,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:04:48,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:48,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:48,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:04:48,038 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) [2023-01-28 07:04:48,065 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 [2023-01-28 07:04:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:04:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:04:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 07:04:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:04:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 07:04:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:04:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:04:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-01-28 07:04:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-01-28 07:04:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:04:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:04:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:04:48,087 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:04:48,385 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:04:48,387 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:04:48,548 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:04:48,555 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:04:48,555 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:04:48,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:48 BoogieIcfgContainer [2023-01-28 07:04:48,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:04:48,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:04:48,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:04:48,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:04:48,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:04:47" (1/3) ... [2023-01-28 07:04:48,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a11f050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:48, skipping insertion in model container [2023-01-28 07:04:48,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (2/3) ... [2023-01-28 07:04:48,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a11f050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:48, skipping insertion in model container [2023-01-28 07:04:48,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:48" (3/3) ... [2023-01-28 07:04:48,563 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-01-28 07:04:48,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:04:48,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-01-28 07:04:48,579 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:04:48,633 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 07:04:48,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 366 flow [2023-01-28 07:04:48,770 INFO L130 PetriNetUnfolder]: 10/213 cut-off events. [2023-01-28 07:04:48,771 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:04:48,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 213 events. 10/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 373 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 125. Up to 4 conditions per place. [2023-01-28 07:04:48,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 175 transitions, 366 flow [2023-01-28 07:04:48,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 163 transitions, 338 flow [2023-01-28 07:04:48,787 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:04:48,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 163 transitions, 338 flow [2023-01-28 07:04:48,809 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 163 transitions, 338 flow [2023-01-28 07:04:48,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 338 flow [2023-01-28 07:04:48,843 INFO L130 PetriNetUnfolder]: 7/194 cut-off events. [2023-01-28 07:04:48,844 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:04:48,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 7/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 312 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-01-28 07:04:48,847 INFO L119 LiptonReduction]: Number of co-enabled transitions 2604 [2023-01-28 07:04:58,803 INFO L134 LiptonReduction]: Checked pairs total: 5770 [2023-01-28 07:04:58,803 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-01-28 07:04:58,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:04:58,821 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b55d4ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:04:58,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-01-28 07:04:58,822 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-28 07:04:58,822 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:58,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:58,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-28 07:04:58,823 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)] === [2023-01-28 07:04:58,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:58,827 INFO L85 PathProgramCache]: Analyzing trace with hash 610, now seen corresponding path program 1 times [2023-01-28 07:04:58,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:58,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23693706] [2023-01-28 07:04:58,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:58,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:59,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:59,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23693706] [2023-01-28 07:04:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23693706] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:59,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:59,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-28 07:04:59,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726943963] [2023-01-28 07:04:59,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:59,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 07:04:59,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:59,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 07:04:59,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 07:04:59,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 352 [2023-01-28 07:04:59,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:59,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:59,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 352 [2023-01-28 07:04:59,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:59,184 INFO L130 PetriNetUnfolder]: 217/420 cut-off events. [2023-01-28 07:04:59,184 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-01-28 07:04:59,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 420 events. 217/420 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2009 event pairs, 216 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 739. Up to 391 conditions per place. [2023-01-28 07:04:59,188 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-01-28 07:04:59,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-01-28 07:04:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 07:04:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 07:04:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 346 transitions. [2023-01-28 07:04:59,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914772727272727 [2023-01-28 07:04:59,214 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 346 transitions. [2023-01-28 07:04:59,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 346 transitions. [2023-01-28 07:04:59,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:59,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 346 transitions. [2023-01-28 07:04:59,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:59,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:59,226 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:59,228 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 346 transitions. [2023-01-28 07:04:59,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-01-28 07:04:59,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 07:04:59,232 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-01-28 07:04:59,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-01-28 07:04:59,236 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-01-28 07:04:59,236 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-01-28 07:04:59,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:59,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:59,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-28 07:04:59,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:04:59,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:04:59,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:59,238 INFO L85 PathProgramCache]: Analyzing trace with hash 18718605, now seen corresponding path program 1 times [2023-01-28 07:04:59,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:59,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424972667] [2023-01-28 07:04:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:59,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:59,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424972667] [2023-01-28 07:04:59,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424972667] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:59,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:59,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:59,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439660218] [2023-01-28 07:04:59,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:59,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:04:59,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:59,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:04:59,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:04:59,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-28 07:04:59,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:59,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:59,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-28 07:04:59,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:59,976 INFO L130 PetriNetUnfolder]: 639/1091 cut-off events. [2023-01-28 07:04:59,977 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 07:04:59,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 1091 events. 639/1091 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5167 event pairs, 306 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2189. Up to 767 conditions per place. [2023-01-28 07:04:59,986 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 35 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-01-28 07:04:59,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 172 flow [2023-01-28 07:04:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-01-28 07:04:59,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2023-01-28 07:04:59,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-01-28 07:04:59,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-01-28 07:04:59,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:59,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-01-28 07:04:59,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:59,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:59,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:59,997 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 424 transitions. [2023-01-28 07:04:59,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 172 flow [2023-01-28 07:04:59,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:04:59,999 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-01-28 07:05:00,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-01-28 07:05:00,000 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-01-28 07:05:00,001 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-01-28 07:05:00,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:00,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 07:05:00,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:05:00,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:00,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:00,003 INFO L85 PathProgramCache]: Analyzing trace with hash 580276061, now seen corresponding path program 1 times [2023-01-28 07:05:00,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:00,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465735959] [2023-01-28 07:05:00,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:00,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:00,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:00,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465735959] [2023-01-28 07:05:00,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465735959] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:00,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:00,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:05:00,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717689458] [2023-01-28 07:05:00,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:00,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:05:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:00,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:05:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:05:00,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-28 07:05:00,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:00,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-28 07:05:00,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:00,435 INFO L130 PetriNetUnfolder]: 755/1298 cut-off events. [2023-01-28 07:05:00,436 INFO L131 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2023-01-28 07:05:00,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1298 events. 755/1298 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6462 event pairs, 422 based on Foata normal form. 37/1333 useless extension candidates. Maximal degree in co-relation 3354. Up to 992 conditions per place. [2023-01-28 07:05:00,443 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 39 selfloop transitions, 9 changer transitions 2/50 dead transitions. [2023-01-28 07:05:00,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 274 flow [2023-01-28 07:05:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:05:00,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:05:00,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-01-28 07:05:00,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2023-01-28 07:05:00,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-01-28 07:05:00,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-01-28 07:05:00,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:00,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-01-28 07:05:00,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,449 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 423 transitions. [2023-01-28 07:05:00,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 274 flow [2023-01-28 07:05:00,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:05:00,453 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-01-28 07:05:00,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-01-28 07:05:00,454 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-01-28 07:05:00,454 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-01-28 07:05:00,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:00,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:00,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:05:00,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:00,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:00,456 INFO L85 PathProgramCache]: Analyzing trace with hash -316833676, now seen corresponding path program 1 times [2023-01-28 07:05:00,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:00,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057227835] [2023-01-28 07:05:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:00,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:00,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057227835] [2023-01-28 07:05:00,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057227835] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:00,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:00,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:05:00,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805775925] [2023-01-28 07:05:00,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:00,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:05:00,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:00,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:05:00,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:05:00,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-01-28 07:05:00,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:00,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-01-28 07:05:00,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:00,601 INFO L130 PetriNetUnfolder]: 105/208 cut-off events. [2023-01-28 07:05:00,601 INFO L131 PetriNetUnfolder]: For 175/214 co-relation queries the response was YES. [2023-01-28 07:05:00,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 208 events. 105/208 cut-off events. For 175/214 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 789 event pairs, 23 based on Foata normal form. 23/221 useless extension candidates. Maximal degree in co-relation 539. Up to 149 conditions per place. [2023-01-28 07:05:00,603 INFO L137 encePairwiseOnDemand]: 350/352 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-01-28 07:05:00,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-01-28 07:05:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:05:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:05:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-01-28 07:05:00,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2023-01-28 07:05:00,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-01-28 07:05:00,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-01-28 07:05:00,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:00,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-01-28 07:05:00,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,609 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 489 transitions. [2023-01-28 07:05:00,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-01-28 07:05:00,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-28 07:05:00,610 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-01-28 07:05:00,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-01-28 07:05:00,611 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-01-28 07:05:00,611 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-01-28 07:05:00,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:00,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:00,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:00,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:05:00,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:00,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash -162568070, now seen corresponding path program 1 times [2023-01-28 07:05:00,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:00,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962843004] [2023-01-28 07:05:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:00,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:01,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:01,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962843004] [2023-01-28 07:05:01,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962843004] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:01,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:01,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:05:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684130124] [2023-01-28 07:05:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:01,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:05:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:01,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:05:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:05:01,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-01-28 07:05:01,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:01,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:01,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-01-28 07:05:01,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:01,434 INFO L130 PetriNetUnfolder]: 156/307 cut-off events. [2023-01-28 07:05:01,434 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-01-28 07:05:01,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 307 events. 156/307 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1212 event pairs, 52 based on Foata normal form. 12/318 useless extension candidates. Maximal degree in co-relation 741. Up to 148 conditions per place. [2023-01-28 07:05:01,436 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 33 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2023-01-28 07:05:01,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 189 flow [2023-01-28 07:05:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:05:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:05:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2023-01-28 07:05:01,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2023-01-28 07:05:01,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2023-01-28 07:05:01,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2023-01-28 07:05:01,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:01,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2023-01-28 07:05:01,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:01,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:01,445 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:01,445 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 5 states and 765 transitions. [2023-01-28 07:05:01,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 189 flow [2023-01-28 07:05:01,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:05:01,446 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 92 flow [2023-01-28 07:05:01,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-28 07:05:01,447 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-01-28 07:05:01,447 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 92 flow [2023-01-28 07:05:01,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:01,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:01,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:01,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:05:01,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:01,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash 165079926, now seen corresponding path program 2 times [2023-01-28 07:05:01,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:01,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531209627] [2023-01-28 07:05:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:01,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:01,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:01,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531209627] [2023-01-28 07:05:01,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531209627] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:01,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:01,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:05:01,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875606329] [2023-01-28 07:05:01,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:01,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:05:01,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:01,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:05:01,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:05:01,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-01-28 07:05:01,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:01,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:01,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-01-28 07:05:01,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:02,102 INFO L130 PetriNetUnfolder]: 134/290 cut-off events. [2023-01-28 07:05:02,102 INFO L131 PetriNetUnfolder]: For 136/144 co-relation queries the response was YES. [2023-01-28 07:05:02,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 290 events. 134/290 cut-off events. For 136/144 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1248 event pairs, 39 based on Foata normal form. 12/289 useless extension candidates. Maximal degree in co-relation 788. Up to 138 conditions per place. [2023-01-28 07:05:02,104 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 31 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-01-28 07:05:02,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 217 flow [2023-01-28 07:05:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:05:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:05:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 760 transitions. [2023-01-28 07:05:02,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2023-01-28 07:05:02,107 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 760 transitions. [2023-01-28 07:05:02,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 760 transitions. [2023-01-28 07:05:02,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:02,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 760 transitions. [2023-01-28 07:05:02,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:02,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:02,112 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:02,112 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 92 flow. Second operand 5 states and 760 transitions. [2023-01-28 07:05:02,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 217 flow [2023-01-28 07:05:02,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:05:02,114 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 124 flow [2023-01-28 07:05:02,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-01-28 07:05:02,115 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-01-28 07:05:02,115 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 124 flow [2023-01-28 07:05:02,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:02,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:02,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:02,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:05:02,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:02,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash -879428702, now seen corresponding path program 3 times [2023-01-28 07:05:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:02,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720479016] [2023-01-28 07:05:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:02,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:04,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720479016] [2023-01-28 07:05:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720479016] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:04,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 07:05:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689890716] [2023-01-28 07:05:04,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 07:05:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 07:05:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-01-28 07:05:04,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 07:05:04,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 124 flow. Second operand has 14 states, 14 states have (on average 104.5) internal successors, (1463), 14 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:04,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:04,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 07:05:04,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:04,892 INFO L130 PetriNetUnfolder]: 267/541 cut-off events. [2023-01-28 07:05:04,892 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2023-01-28 07:05:04,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 541 events. 267/541 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2383 event pairs, 41 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 1653. Up to 260 conditions per place. [2023-01-28 07:05:04,896 INFO L137 encePairwiseOnDemand]: 338/352 looper letters, 78 selfloop transitions, 25 changer transitions 0/103 dead transitions. [2023-01-28 07:05:04,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 103 transitions, 612 flow [2023-01-28 07:05:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 07:05:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 07:05:04,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1537 transitions. [2023-01-28 07:05:04,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118912337662338 [2023-01-28 07:05:04,901 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1537 transitions. [2023-01-28 07:05:04,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1537 transitions. [2023-01-28 07:05:04,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:04,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1537 transitions. [2023-01-28 07:05:04,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.78571428571429) internal successors, (1537), 14 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:04,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:04,913 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:04,913 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 124 flow. Second operand 14 states and 1537 transitions. [2023-01-28 07:05:04,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 103 transitions, 612 flow [2023-01-28 07:05:04,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 103 transitions, 586 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:05:04,917 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 316 flow [2023-01-28 07:05:04,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=316, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-01-28 07:05:04,918 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-01-28 07:05:04,918 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 316 flow [2023-01-28 07:05:04,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 104.5) internal successors, (1463), 14 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:04,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:04,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:04,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:05:04,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:04,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:04,921 INFO L85 PathProgramCache]: Analyzing trace with hash 150075208, now seen corresponding path program 4 times [2023-01-28 07:05:04,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:04,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036994160] [2023-01-28 07:05:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:04,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:06,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:06,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036994160] [2023-01-28 07:05:06,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036994160] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:06,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:06,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-28 07:05:06,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233480345] [2023-01-28 07:05:06,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:06,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 07:05:06,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 07:05:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-01-28 07:05:06,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 07:05:06,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 316 flow. Second operand has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:06,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:06,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 07:05:06,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:08,073 INFO L130 PetriNetUnfolder]: 305/638 cut-off events. [2023-01-28 07:05:08,073 INFO L131 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2023-01-28 07:05:08,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 638 events. 305/638 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3043 event pairs, 58 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 2379. Up to 378 conditions per place. [2023-01-28 07:05:08,078 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 98 selfloop transitions, 31 changer transitions 0/129 dead transitions. [2023-01-28 07:05:08,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 129 transitions, 976 flow [2023-01-28 07:05:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 07:05:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 07:05:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1538 transitions. [2023-01-28 07:05:08,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31209415584415584 [2023-01-28 07:05:08,084 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1538 transitions. [2023-01-28 07:05:08,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1538 transitions. [2023-01-28 07:05:08,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:08,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1538 transitions. [2023-01-28 07:05:08,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.85714285714286) internal successors, (1538), 14 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:08,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:08,096 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:08,096 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 316 flow. Second operand 14 states and 1538 transitions. [2023-01-28 07:05:08,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 129 transitions, 976 flow [2023-01-28 07:05:08,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 948 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-28 07:05:08,102 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 550 flow [2023-01-28 07:05:08,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=550, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-01-28 07:05:08,104 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-01-28 07:05:08,104 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 550 flow [2023-01-28 07:05:08,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:08,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:08,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:08,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:05:08,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:08,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:08,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1787597420, now seen corresponding path program 5 times [2023-01-28 07:05:08,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:08,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209739626] [2023-01-28 07:05:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:08,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:10,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209739626] [2023-01-28 07:05:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209739626] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:10,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:10,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-28 07:05:10,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056896830] [2023-01-28 07:05:10,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:10,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 07:05:10,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:10,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 07:05:10,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-01-28 07:05:10,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 07:05:10,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 550 flow. Second operand has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:10,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:10,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 07:05:10,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:11,236 INFO L130 PetriNetUnfolder]: 312/663 cut-off events. [2023-01-28 07:05:11,236 INFO L131 PetriNetUnfolder]: For 1608/1608 co-relation queries the response was YES. [2023-01-28 07:05:11,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 663 events. 312/663 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3240 event pairs, 62 based on Foata normal form. 1/663 useless extension candidates. Maximal degree in co-relation 2795. Up to 424 conditions per place. [2023-01-28 07:05:11,242 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 97 selfloop transitions, 34 changer transitions 0/131 dead transitions. [2023-01-28 07:05:11,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 1131 flow [2023-01-28 07:05:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 07:05:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 07:05:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1640 transitions. [2023-01-28 07:05:11,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2023-01-28 07:05:11,248 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1640 transitions. [2023-01-28 07:05:11,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1640 transitions. [2023-01-28 07:05:11,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:11,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1640 transitions. [2023-01-28 07:05:11,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 109.33333333333333) internal successors, (1640), 15 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:11,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:11,262 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:11,262 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 550 flow. Second operand 15 states and 1640 transitions. [2023-01-28 07:05:11,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 1131 flow [2023-01-28 07:05:11,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 1103 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 07:05:11,274 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 703 flow [2023-01-28 07:05:11,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=703, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-01-28 07:05:11,276 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 54 predicate places. [2023-01-28 07:05:11,276 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 703 flow [2023-01-28 07:05:11,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:11,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:11,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:11,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:05:11,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:11,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash -472083164, now seen corresponding path program 6 times [2023-01-28 07:05:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856398619] [2023-01-28 07:05:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:12,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:12,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856398619] [2023-01-28 07:05:12,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856398619] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:12,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:12,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-28 07:05:12,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30696052] [2023-01-28 07:05:12,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:12,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 07:05:12,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:12,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 07:05:12,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-01-28 07:05:12,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 07:05:12,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 703 flow. Second operand has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:12,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:12,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 07:05:12,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:13,970 INFO L130 PetriNetUnfolder]: 316/681 cut-off events. [2023-01-28 07:05:13,970 INFO L131 PetriNetUnfolder]: For 1859/1859 co-relation queries the response was YES. [2023-01-28 07:05:13,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 681 events. 316/681 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3364 event pairs, 66 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 2973. Up to 433 conditions per place. [2023-01-28 07:05:13,976 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 102 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2023-01-28 07:05:13,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 137 transitions, 1284 flow [2023-01-28 07:05:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 07:05:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 07:05:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1537 transitions. [2023-01-28 07:05:13,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118912337662338 [2023-01-28 07:05:13,981 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1537 transitions. [2023-01-28 07:05:13,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1537 transitions. [2023-01-28 07:05:13,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:13,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1537 transitions. [2023-01-28 07:05:13,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.78571428571429) internal successors, (1537), 14 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:13,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:13,993 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:13,993 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 703 flow. Second operand 14 states and 1537 transitions. [2023-01-28 07:05:13,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 137 transitions, 1284 flow [2023-01-28 07:05:14,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 1230 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-01-28 07:05:14,003 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 819 flow [2023-01-28 07:05:14,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=819, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-01-28 07:05:14,003 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-01-28 07:05:14,004 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 819 flow [2023-01-28 07:05:14,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:14,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:14,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:14,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:05:14,005 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)] === [2023-01-28 07:05:14,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:14,005 INFO L85 PathProgramCache]: Analyzing trace with hash 636504459, now seen corresponding path program 1 times [2023-01-28 07:05:14,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:14,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152317429] [2023-01-28 07:05:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:14,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:14,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:14,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152317429] [2023-01-28 07:05:14,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152317429] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:14,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:14,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 07:05:14,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469434965] [2023-01-28 07:05:14,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:14,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:05:14,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:14,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:05:14,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:05:14,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 352 [2023-01-28 07:05:14,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 819 flow. Second operand has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:14,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:14,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 352 [2023-01-28 07:05:14,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:14,991 INFO L130 PetriNetUnfolder]: 405/926 cut-off events. [2023-01-28 07:05:14,992 INFO L131 PetriNetUnfolder]: For 2806/2806 co-relation queries the response was YES. [2023-01-28 07:05:14,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 926 events. 405/926 cut-off events. For 2806/2806 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5498 event pairs, 59 based on Foata normal form. 6/931 useless extension candidates. Maximal degree in co-relation 4062. Up to 315 conditions per place. [2023-01-28 07:05:14,998 INFO L137 encePairwiseOnDemand]: 343/352 looper letters, 102 selfloop transitions, 47 changer transitions 15/164 dead transitions. [2023-01-28 07:05:14,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 164 transitions, 1704 flow [2023-01-28 07:05:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:05:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:05:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 843 transitions. [2023-01-28 07:05:15,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34212662337662336 [2023-01-28 07:05:15,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 843 transitions. [2023-01-28 07:05:15,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 843 transitions. [2023-01-28 07:05:15,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:15,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 843 transitions. [2023-01-28 07:05:15,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.42857142857143) internal successors, (843), 7 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:15,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:15,008 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:15,008 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 819 flow. Second operand 7 states and 843 transitions. [2023-01-28 07:05:15,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 164 transitions, 1704 flow [2023-01-28 07:05:15,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 164 transitions, 1594 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-01-28 07:05:15,023 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 934 flow [2023-01-28 07:05:15,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=934, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-01-28 07:05:15,024 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2023-01-28 07:05:15,024 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 934 flow [2023-01-28 07:05:15,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:15,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:15,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:15,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 07:05:15,025 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:15,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:15,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1929965402, now seen corresponding path program 7 times [2023-01-28 07:05:15,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:15,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893692908] [2023-01-28 07:05:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:16,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:16,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893692908] [2023-01-28 07:05:16,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893692908] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:16,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:16,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 07:05:16,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074925500] [2023-01-28 07:05:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:16,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 07:05:16,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:16,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 07:05:16,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 07:05:16,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 07:05:16,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 934 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:16,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:16,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 07:05:16,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:17,270 INFO L130 PetriNetUnfolder]: 402/908 cut-off events. [2023-01-28 07:05:17,271 INFO L131 PetriNetUnfolder]: For 3131/3131 co-relation queries the response was YES. [2023-01-28 07:05:17,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 908 events. 402/908 cut-off events. For 3131/3131 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5210 event pairs, 161 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 4181. Up to 761 conditions per place. [2023-01-28 07:05:17,278 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 118 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2023-01-28 07:05:17,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 141 transitions, 1513 flow [2023-01-28 07:05:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 07:05:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 07:05:17,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1414 transitions. [2023-01-28 07:05:17,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090034965034965 [2023-01-28 07:05:17,283 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1414 transitions. [2023-01-28 07:05:17,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1414 transitions. [2023-01-28 07:05:17,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:17,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1414 transitions. [2023-01-28 07:05:17,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 108.76923076923077) internal successors, (1414), 13 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:17,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:17,292 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:17,292 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 934 flow. Second operand 13 states and 1414 transitions. [2023-01-28 07:05:17,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 141 transitions, 1513 flow [2023-01-28 07:05:17,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 141 transitions, 1436 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-01-28 07:05:17,304 INFO L231 Difference]: Finished difference. Result has 106 places, 108 transitions, 1040 flow [2023-01-28 07:05:17,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1040, PETRI_PLACES=106, PETRI_TRANSITIONS=108} [2023-01-28 07:05:17,305 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 70 predicate places. [2023-01-28 07:05:17,305 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 108 transitions, 1040 flow [2023-01-28 07:05:17,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:17,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:17,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:17,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 07:05:17,306 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:17,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:17,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1469704044, now seen corresponding path program 8 times [2023-01-28 07:05:17,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:17,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295178511] [2023-01-28 07:05:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:17,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:17,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:17,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295178511] [2023-01-28 07:05:17,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295178511] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:17,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:17,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:05:17,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988328331] [2023-01-28 07:05:17,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:17,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:05:17,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:05:17,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:05:17,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-01-28 07:05:17,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 108 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:17,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:17,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-01-28 07:05:17,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:17,949 INFO L130 PetriNetUnfolder]: 155/455 cut-off events. [2023-01-28 07:05:17,949 INFO L131 PetriNetUnfolder]: For 2064/2071 co-relation queries the response was YES. [2023-01-28 07:05:17,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 455 events. 155/455 cut-off events. For 2064/2071 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2521 event pairs, 90 based on Foata normal form. 14/460 useless extension candidates. Maximal degree in co-relation 2145. Up to 372 conditions per place. [2023-01-28 07:05:17,953 INFO L137 encePairwiseOnDemand]: 347/352 looper letters, 88 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2023-01-28 07:05:17,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 1209 flow [2023-01-28 07:05:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:05:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:05:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-01-28 07:05:17,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43068181818181817 [2023-01-28 07:05:17,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-01-28 07:05:17,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-01-28 07:05:17,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:17,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-01-28 07:05:17,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:17,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:17,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:17,963 INFO L175 Difference]: Start difference. First operand has 106 places, 108 transitions, 1040 flow. Second operand 5 states and 758 transitions. [2023-01-28 07:05:17,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 106 transitions, 1209 flow [2023-01-28 07:05:17,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 106 transitions, 1112 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-01-28 07:05:17,974 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 895 flow [2023-01-28 07:05:17,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2023-01-28 07:05:17,975 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-01-28 07:05:17,975 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 895 flow [2023-01-28 07:05:17,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:17,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:17,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:17,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 07:05:17,976 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:17,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash 835537406, now seen corresponding path program 9 times [2023-01-28 07:05:17,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:17,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644262789] [2023-01-28 07:05:17,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:17,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:19,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:19,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644262789] [2023-01-28 07:05:19,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644262789] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:19,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:19,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 07:05:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955163437] [2023-01-28 07:05:19,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:19,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 07:05:19,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 07:05:19,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 07:05:19,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 07:05:19,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 895 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:19,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:19,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 07:05:19,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:20,105 INFO L130 PetriNetUnfolder]: 198/554 cut-off events. [2023-01-28 07:05:20,106 INFO L131 PetriNetUnfolder]: For 1905/1905 co-relation queries the response was YES. [2023-01-28 07:05:20,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 554 events. 198/554 cut-off events. For 1905/1905 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3167 event pairs, 98 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 2404. Up to 451 conditions per place. [2023-01-28 07:05:20,110 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 113 selfloop transitions, 22 changer transitions 0/135 dead transitions. [2023-01-28 07:05:20,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 135 transitions, 1419 flow [2023-01-28 07:05:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 07:05:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 07:05:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1302 transitions. [2023-01-28 07:05:20,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30823863636363635 [2023-01-28 07:05:20,113 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1302 transitions. [2023-01-28 07:05:20,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1302 transitions. [2023-01-28 07:05:20,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:20,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1302 transitions. [2023-01-28 07:05:20,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.5) internal successors, (1302), 12 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:20,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:20,120 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:20,120 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 895 flow. Second operand 12 states and 1302 transitions. [2023-01-28 07:05:20,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 135 transitions, 1419 flow [2023-01-28 07:05:20,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 135 transitions, 1408 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:05:20,132 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 1075 flow [2023-01-28 07:05:20,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1075, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2023-01-28 07:05:20,132 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2023-01-28 07:05:20,133 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 1075 flow [2023-01-28 07:05:20,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:20,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:20,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:20,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 07:05:20,133 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:20,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash 420697918, now seen corresponding path program 10 times [2023-01-28 07:05:20,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:20,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298266525] [2023-01-28 07:05:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:21,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:21,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298266525] [2023-01-28 07:05:21,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298266525] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:21,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:21,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 07:05:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810047615] [2023-01-28 07:05:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:21,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 07:05:21,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 07:05:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 07:05:21,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 07:05:21,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 1075 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:21,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:21,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 07:05:21,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:22,202 INFO L130 PetriNetUnfolder]: 216/607 cut-off events. [2023-01-28 07:05:22,202 INFO L131 PetriNetUnfolder]: For 2693/2693 co-relation queries the response was YES. [2023-01-28 07:05:22,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 607 events. 216/607 cut-off events. For 2693/2693 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3615 event pairs, 114 based on Foata normal form. 2/608 useless extension candidates. Maximal degree in co-relation 2790. Up to 504 conditions per place. [2023-01-28 07:05:22,207 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 120 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2023-01-28 07:05:22,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 142 transitions, 1605 flow [2023-01-28 07:05:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 07:05:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 07:05:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1302 transitions. [2023-01-28 07:05:22,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30823863636363635 [2023-01-28 07:05:22,210 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1302 transitions. [2023-01-28 07:05:22,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1302 transitions. [2023-01-28 07:05:22,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:22,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1302 transitions. [2023-01-28 07:05:22,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.5) internal successors, (1302), 12 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:22,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:22,218 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:22,218 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 1075 flow. Second operand 12 states and 1302 transitions. [2023-01-28 07:05:22,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 142 transitions, 1605 flow [2023-01-28 07:05:22,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 142 transitions, 1538 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-01-28 07:05:22,233 INFO L231 Difference]: Finished difference. Result has 129 places, 116 transitions, 1197 flow [2023-01-28 07:05:22,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1197, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2023-01-28 07:05:22,233 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2023-01-28 07:05:22,233 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 1197 flow [2023-01-28 07:05:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:22,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:22,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:22,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 07:05:22,234 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)] === [2023-01-28 07:05:22,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:22,235 INFO L85 PathProgramCache]: Analyzing trace with hash 620461591, now seen corresponding path program 2 times [2023-01-28 07:05:22,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:22,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912808405] [2023-01-28 07:05:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:22,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:22,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912808405] [2023-01-28 07:05:22,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912808405] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:22,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:22,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 07:05:22,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730316019] [2023-01-28 07:05:22,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:22,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 07:05:22,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:22,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 07:05:22,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-01-28 07:05:22,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 352 [2023-01-28 07:05:22,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 1197 flow. Second operand has 11 states, 11 states have (on average 107.9090909090909) internal successors, (1187), 11 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:22,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:22,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 352 [2023-01-28 07:05:22,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:23,451 INFO L130 PetriNetUnfolder]: 232/681 cut-off events. [2023-01-28 07:05:23,451 INFO L131 PetriNetUnfolder]: For 3191/3191 co-relation queries the response was YES. [2023-01-28 07:05:23,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 681 events. 232/681 cut-off events. For 3191/3191 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4320 event pairs, 81 based on Foata normal form. 11/691 useless extension candidates. Maximal degree in co-relation 3135. Up to 239 conditions per place. [2023-01-28 07:05:23,456 INFO L137 encePairwiseOnDemand]: 343/352 looper letters, 103 selfloop transitions, 39 changer transitions 32/174 dead transitions. [2023-01-28 07:05:23,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 174 transitions, 2054 flow [2023-01-28 07:05:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 07:05:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 07:05:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1451 transitions. [2023-01-28 07:05:23,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31708916083916083 [2023-01-28 07:05:23,459 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1451 transitions. [2023-01-28 07:05:23,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1451 transitions. [2023-01-28 07:05:23,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:23,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1451 transitions. [2023-01-28 07:05:23,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 111.61538461538461) internal successors, (1451), 13 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:23,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:23,467 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:23,467 INFO L175 Difference]: Start difference. First operand has 129 places, 116 transitions, 1197 flow. Second operand 13 states and 1451 transitions. [2023-01-28 07:05:23,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 174 transitions, 2054 flow [2023-01-28 07:05:23,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 174 transitions, 1996 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-01-28 07:05:23,486 INFO L231 Difference]: Finished difference. Result has 141 places, 89 transitions, 1019 flow [2023-01-28 07:05:23,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1019, PETRI_PLACES=141, PETRI_TRANSITIONS=89} [2023-01-28 07:05:23,487 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 105 predicate places. [2023-01-28 07:05:23,487 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 89 transitions, 1019 flow [2023-01-28 07:05:23,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.9090909090909) internal successors, (1187), 11 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:23,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:23,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:23,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 07:05:23,488 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)] === [2023-01-28 07:05:23,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1153106705, now seen corresponding path program 3 times [2023-01-28 07:05:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:23,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831006495] [2023-01-28 07:05:23,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:23,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:24,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:24,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831006495] [2023-01-28 07:05:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831006495] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:24,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 07:05:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688295406] [2023-01-28 07:05:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:24,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:05:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:05:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:05:24,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 352 [2023-01-28 07:05:24,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 89 transitions, 1019 flow. Second operand has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:24,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:24,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 352 [2023-01-28 07:05:24,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:24,326 INFO L130 PetriNetUnfolder]: 155/456 cut-off events. [2023-01-28 07:05:24,327 INFO L131 PetriNetUnfolder]: For 2823/2823 co-relation queries the response was YES. [2023-01-28 07:05:24,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 456 events. 155/456 cut-off events. For 2823/2823 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2496 event pairs, 37 based on Foata normal form. 5/461 useless extension candidates. Maximal degree in co-relation 2253. Up to 160 conditions per place. [2023-01-28 07:05:24,331 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 92 selfloop transitions, 28 changer transitions 12/132 dead transitions. [2023-01-28 07:05:24,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 1598 flow [2023-01-28 07:05:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:05:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:05:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 841 transitions. [2023-01-28 07:05:24,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34131493506493504 [2023-01-28 07:05:24,333 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 841 transitions. [2023-01-28 07:05:24,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 841 transitions. [2023-01-28 07:05:24,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:24,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 841 transitions. [2023-01-28 07:05:24,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.14285714285714) internal successors, (841), 7 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:24,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:24,337 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:24,337 INFO L175 Difference]: Start difference. First operand has 141 places, 89 transitions, 1019 flow. Second operand 7 states and 841 transitions. [2023-01-28 07:05:24,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 1598 flow [2023-01-28 07:05:24,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 132 transitions, 1320 flow, removed 99 selfloop flow, removed 28 redundant places. [2023-01-28 07:05:24,350 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 774 flow [2023-01-28 07:05:24,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2023-01-28 07:05:24,350 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-01-28 07:05:24,351 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 774 flow [2023-01-28 07:05:24,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:24,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:24,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:24,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 07:05:24,351 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:24,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1122143276, now seen corresponding path program 11 times [2023-01-28 07:05:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:24,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42768367] [2023-01-28 07:05:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:24,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:25,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:25,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42768367] [2023-01-28 07:05:25,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42768367] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:25,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:25,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 07:05:25,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228093445] [2023-01-28 07:05:25,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:25,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 07:05:25,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 07:05:25,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 07:05:25,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 07:05:25,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 774 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:25,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:25,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 07:05:25,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:26,238 INFO L130 PetriNetUnfolder]: 178/504 cut-off events. [2023-01-28 07:05:26,239 INFO L131 PetriNetUnfolder]: For 2219/2219 co-relation queries the response was YES. [2023-01-28 07:05:26,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 504 events. 178/504 cut-off events. For 2219/2219 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2772 event pairs, 67 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 2222. Up to 357 conditions per place. [2023-01-28 07:05:26,242 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 84 selfloop transitions, 23 changer transitions 16/123 dead transitions. [2023-01-28 07:05:26,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 1348 flow [2023-01-28 07:05:26,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 07:05:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 07:05:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1307 transitions. [2023-01-28 07:05:26,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3094223484848485 [2023-01-28 07:05:26,245 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1307 transitions. [2023-01-28 07:05:26,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1307 transitions. [2023-01-28 07:05:26,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:26,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1307 transitions. [2023-01-28 07:05:26,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.91666666666667) internal successors, (1307), 12 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:26,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:26,252 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:26,252 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 774 flow. Second operand 12 states and 1307 transitions. [2023-01-28 07:05:26,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 1348 flow [2023-01-28 07:05:26,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 1243 flow, removed 32 selfloop flow, removed 10 redundant places. [2023-01-28 07:05:26,262 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 876 flow [2023-01-28 07:05:26,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=876, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2023-01-28 07:05:26,262 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-01-28 07:05:26,262 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 876 flow [2023-01-28 07:05:26,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:26,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:26,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:26,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 07:05:26,263 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:26,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1454018746, now seen corresponding path program 12 times [2023-01-28 07:05:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:26,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395991792] [2023-01-28 07:05:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395991792] [2023-01-28 07:05:27,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395991792] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:27,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:27,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 07:05:27,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408442826] [2023-01-28 07:05:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 07:05:27,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 07:05:27,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 07:05:27,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 07:05:27,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 876 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:27,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:27,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 07:05:27,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:28,058 INFO L130 PetriNetUnfolder]: 163/472 cut-off events. [2023-01-28 07:05:28,058 INFO L131 PetriNetUnfolder]: For 2081/2081 co-relation queries the response was YES. [2023-01-28 07:05:28,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 472 events. 163/472 cut-off events. For 2081/2081 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2558 event pairs, 65 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2107. Up to 351 conditions per place. [2023-01-28 07:05:28,061 INFO L137 encePairwiseOnDemand]: 340/352 looper letters, 80 selfloop transitions, 18 changer transitions 21/119 dead transitions. [2023-01-28 07:05:28,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 119 transitions, 1313 flow [2023-01-28 07:05:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 07:05:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 07:05:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1306 transitions. [2023-01-28 07:05:28,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3091856060606061 [2023-01-28 07:05:28,064 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1306 transitions. [2023-01-28 07:05:28,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1306 transitions. [2023-01-28 07:05:28,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:28,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1306 transitions. [2023-01-28 07:05:28,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.83333333333333) internal successors, (1306), 12 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:28,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:28,070 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:28,070 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 876 flow. Second operand 12 states and 1306 transitions. [2023-01-28 07:05:28,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 119 transitions, 1313 flow [2023-01-28 07:05:28,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 119 transitions, 1270 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-01-28 07:05:28,080 INFO L231 Difference]: Finished difference. Result has 108 places, 83 transitions, 839 flow [2023-01-28 07:05:28,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=839, PETRI_PLACES=108, PETRI_TRANSITIONS=83} [2023-01-28 07:05:28,080 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2023-01-28 07:05:28,080 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 83 transitions, 839 flow [2023-01-28 07:05:28,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:05:28,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:28,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:28,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 07:05:28,081 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 07:05:28,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:28,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1412750582, now seen corresponding path program 13 times [2023-01-28 07:05:28,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:28,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188558039] [2023-01-28 07:05:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:28,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:28,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 07:05:28,699 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-01-28 07:05:28,719 INFO L158 Benchmark]: Toolchain (without parser) took 41682.56ms. Allocated memory was 574.6MB in the beginning and 998.2MB in the end (delta: 423.6MB). Free memory was 522.2MB in the beginning and 638.0MB in the end (delta: -115.9MB). Peak memory consumption was 587.2MB. Max. memory is 16.0GB. [2023-01-28 07:05:28,720 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 360.7MB. Free memory is still 309.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:05:28,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 864.88ms. Allocated memory is still 574.6MB. Free memory was 522.2MB in the beginning and 528.1MB in the end (delta: -6.0MB). Peak memory consumption was 58.1MB. Max. memory is 16.0GB. [2023-01-28 07:05:28,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.73ms. Allocated memory is still 574.6MB. Free memory was 528.1MB in the beginning and 525.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 07:05:28,720 INFO L158 Benchmark]: Boogie Preprocessor took 47.65ms. Allocated memory is still 574.6MB. Free memory was 525.0MB in the beginning and 521.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:05:28,720 INFO L158 Benchmark]: RCFGBuilder took 550.69ms. Allocated memory is still 574.6MB. Free memory was 521.9MB in the beginning and 497.8MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 07:05:28,721 INFO L158 Benchmark]: TraceAbstraction took 40160.43ms. Allocated memory was 574.6MB in the beginning and 998.2MB in the end (delta: 423.6MB). Free memory was 497.8MB in the beginning and 638.0MB in the end (delta: -140.3MB). Peak memory consumption was 560.6MB. Max. memory is 16.0GB. [2023-01-28 07:05:28,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 360.7MB. Free memory is still 309.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 864.88ms. Allocated memory is still 574.6MB. Free memory was 522.2MB in the beginning and 528.1MB in the end (delta: -6.0MB). Peak memory consumption was 58.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.73ms. Allocated memory is still 574.6MB. Free memory was 528.1MB in the beginning and 525.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.65ms. Allocated memory is still 574.6MB. Free memory was 525.0MB in the beginning and 521.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 550.69ms. Allocated memory is still 574.6MB. Free memory was 521.9MB in the beginning and 497.8MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 40160.43ms. Allocated memory was 574.6MB in the beginning and 998.2MB in the end (delta: 423.6MB). Free memory was 497.8MB in the beginning and 638.0MB in the end (delta: -140.3MB). Peak memory consumption was 560.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.0s, 163 PlacesBefore, 36 PlacesAfterwards, 163 TransitionsBefore, 32 TransitionsAfterwards, 2604 CoEnabledTransitionPairs, 8 FixpointIterations, 97 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 177 TotalNumberOfCompositions, 5770 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2818, independent: 2592, independent conditional: 0, independent unconditional: 2592, dependent: 226, dependent conditional: 0, dependent unconditional: 226, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1388, independent: 1342, independent conditional: 0, independent unconditional: 1342, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2818, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 1388, unknown conditional: 0, unknown unconditional: 1388] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-01-28 07:05:28,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...