/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 11:13:34,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:13:34,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:13:34,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:13:34,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:13:34,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:13:34,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:13:34,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:13:34,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:13:34,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:13:34,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:13:34,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:13:34,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:13:34,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:13:34,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:13:34,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:13:34,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:13:34,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:13:34,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:13:34,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:13:34,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:13:34,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:13:34,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:13:34,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:13:34,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-13 11:13:34,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:13:34,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:13:34,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:13:34,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:13:34,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:13:34,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:13:34,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:13:34,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:13:34,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:13:34,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:13:34,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:13:34,188 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-RepeatedSemanticLbeWithPredicates.epf [2022-12-13 11:13:34,205 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:13:34,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:13:34,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:13:34,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:13:34,207 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:13:34,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:13:34,207 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:13:34,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:13:34,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:13:34,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:13:34,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:13:34,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:13:34,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:13:34,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:13:34,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:13:34,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:13:34,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:13:34,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:13:34,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:13:34,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 11:13:34,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:13:34,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:13:34,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:13:34,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:13:34,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:13:34,223 INFO L138 SettingsManager]: * Use conditional commutativity for large block encoding in concurrent analysis=CONDITIONAL_CONJUNCTIVE [2022-12-13 11:13:34,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:13:34,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:13:34,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 11:13:34,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 11:13:34,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:13:34,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:13:34,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:13:34,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:13:34,506 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:13:34,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2022-12-13 11:13:35,453 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:13:35,625 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:13:35,625 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2022-12-13 11:13:35,635 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/581971021/53ecd413f2844c588cf4a6864250d37a/FLAG29e1a444e [2022-12-13 11:13:35,649 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/581971021/53ecd413f2844c588cf4a6864250d37a [2022-12-13 11:13:35,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:13:35,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 11:13:35,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:13:35,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:13:35,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:13:35,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:13:35" (1/1) ... [2022-12-13 11:13:35,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7205a745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:35, skipping insertion in model container [2022-12-13 11:13:35,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:13:35" (1/1) ... [2022-12-13 11:13:35,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:13:35,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:13:35,917 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-12-13 11:13:35,924 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-12-13 11:13:35,928 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-12-13 11:13:35,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:13:35,969 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:13:36,022 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-12-13 11:13:36,023 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-12-13 11:13:36,024 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-12-13 11:13:36,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:13:36,063 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:13:36,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36 WrapperNode [2022-12-13 11:13:36,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:13:36,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:13:36,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:13:36,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:13:36,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,121 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-12-13 11:13:36,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:13:36,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:13:36,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:13:36,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:13:36,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,151 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:13:36,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:13:36,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:13:36,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:13:36,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (1/1) ... [2022-12-13 11:13:36,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:13:36,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:13:36,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:13:36,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:13:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:13:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 11:13:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 11:13:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 11:13:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 11:13:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:13:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 11:13:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:13:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:13:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:13:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 11:13:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:13:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:13:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:13:36,245 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 11:13:36,335 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 11:13:36,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:13:36,538 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 11:13:36,544 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:13:36,544 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 11:13:36,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:13:36 BoogieIcfgContainer [2022-12-13 11:13:36,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:13:36,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:13:36,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:13:36,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:13:36,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:13:35" (1/3) ... [2022-12-13 11:13:36,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ae80a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:13:36, skipping insertion in model container [2022-12-13 11:13:36,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:13:36" (2/3) ... [2022-12-13 11:13:36,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ae80a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:13:36, skipping insertion in model container [2022-12-13 11:13:36,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:13:36" (3/3) ... [2022-12-13 11:13:36,551 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2022-12-13 11:13:36,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:13:36,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-13 11:13:36,564 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:13:36,632 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:13:36,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 148 transitions, 312 flow [2022-12-13 11:13:36,736 INFO L130 PetriNetUnfolder]: 11/146 cut-off events. [2022-12-13 11:13:36,736 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:13:36,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 11/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-12-13 11:13:36,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 148 transitions, 312 flow [2022-12-13 11:13:36,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 137 transitions, 283 flow [2022-12-13 11:13:36,750 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:13:36,772 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 137 transitions, 283 flow [2022-12-13 11:13:36,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 137 transitions, 283 flow [2022-12-13 11:13:36,821 INFO L130 PetriNetUnfolder]: 11/137 cut-off events. [2022-12-13 11:13:36,821 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:13:36,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 137 events. 11/137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 266 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-12-13 11:13:36,839 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 137 transitions, 283 flow [2022-12-13 11:13:36,839 INFO L226 LiptonReduction]: Number of co-enabled transitions 4498 [2022-12-13 11:13:44,818 INFO L241 LiptonReduction]: Total number of compositions: 113 [2022-12-13 11:13:44,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:13:44,834 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=REPEATED_LIPTON_PN, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b14f8de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_CONJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 11:13:44,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 11:13:44,838 INFO L130 PetriNetUnfolder]: 1/22 cut-off events. [2022-12-13 11:13:44,838 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:13:44,838 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:13:44,839 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:13:44,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:13:44,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:44,842 INFO L85 PathProgramCache]: Analyzing trace with hash 19165804, now seen corresponding path program 1 times [2022-12-13 11:13:44,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:44,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850084772] [2022-12-13 11:13:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:44,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:13:44,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:44,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850084772] [2022-12-13 11:13:44,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850084772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:44,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:44,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:13:44,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310162864] [2022-12-13 11:13:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:44,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:13:44,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:44,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:13:44,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:13:44,989 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 99 [2022-12-13 11:13:44,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 207 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:44,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:13:44,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 99 [2022-12-13 11:13:44,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:13:45,367 INFO L130 PetriNetUnfolder]: 4126/6923 cut-off events. [2022-12-13 11:13:45,367 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 11:13:45,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13333 conditions, 6923 events. 4126/6923 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 48536 event pairs, 3532 based on Foata normal form. 0/2324 useless extension candidates. Maximal degree in co-relation 13054. Up to 6325 conditions per place. [2022-12-13 11:13:45,386 INFO L137 encePairwiseOnDemand]: 87/99 looper letters, 68 selfloop transitions, 0 changer transitions 0/87 dead transitions. [2022-12-13 11:13:45,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 319 flow [2022-12-13 11:13:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:13:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 11:13:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 118 transitions. [2022-12-13 11:13:45,394 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2022-12-13 11:13:45,395 INFO L175 Difference]: Start difference. First operand has 95 places, 99 transitions, 207 flow. Second operand 2 states and 118 transitions. [2022-12-13 11:13:45,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 319 flow [2022-12-13 11:13:45,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 314 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 11:13:45,401 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 178 flow [2022-12-13 11:13:45,402 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=178, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2022-12-13 11:13:45,404 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -11 predicate places. [2022-12-13 11:13:45,405 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:13:45,405 INFO L89 Accepts]: Start accepts. Operand has 84 places, 87 transitions, 178 flow [2022-12-13 11:13:45,407 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:13:45,407 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:13:45,407 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 87 transitions, 178 flow [2022-12-13 11:13:45,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 87 transitions, 178 flow [2022-12-13 11:13:45,414 INFO L130 PetriNetUnfolder]: 8/87 cut-off events. [2022-12-13 11:13:45,414 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:13:45,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 8/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 459 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-12-13 11:13:45,417 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 87 transitions, 178 flow [2022-12-13 11:13:45,417 INFO L226 LiptonReduction]: Number of co-enabled transitions 3756 [2022-12-13 11:13:47,890 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:13:47,892 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2487 [2022-12-13 11:13:47,892 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 178 flow [2022-12-13 11:13:47,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:47,892 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:13:47,892 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:13:47,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:13:47,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:13:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1238343421, now seen corresponding path program 1 times [2022-12-13 11:13:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:47,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240578459] [2022-12-13 11:13:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:47,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:13:48,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:48,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240578459] [2022-12-13 11:13:48,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240578459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:48,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:48,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:13:48,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726308462] [2022-12-13 11:13:48,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:48,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:13:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:48,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:13:48,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:48,147 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 87 [2022-12-13 11:13:48,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:48,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:13:48,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 87 [2022-12-13 11:13:48,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:13:48,703 INFO L130 PetriNetUnfolder]: 5960/10012 cut-off events. [2022-12-13 11:13:48,703 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 11:13:48,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19298 conditions, 10012 events. 5960/10012 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 69283 event pairs, 2122 based on Foata normal form. 0/3412 useless extension candidates. Maximal degree in co-relation 14570. Up to 6228 conditions per place. [2022-12-13 11:13:48,726 INFO L137 encePairwiseOnDemand]: 77/87 looper letters, 112 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2022-12-13 11:13:48,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 134 transitions, 507 flow [2022-12-13 11:13:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:13:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:13:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2022-12-13 11:13:48,730 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6743295019157088 [2022-12-13 11:13:48,730 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 178 flow. Second operand 3 states and 176 transitions. [2022-12-13 11:13:48,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 134 transitions, 507 flow [2022-12-13 11:13:48,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 507 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:13:48,734 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 214 flow [2022-12-13 11:13:48,734 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2022-12-13 11:13:48,734 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -9 predicate places. [2022-12-13 11:13:48,734 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:13:48,735 INFO L89 Accepts]: Start accepts. Operand has 86 places, 90 transitions, 214 flow [2022-12-13 11:13:48,735 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:13:48,735 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:13:48,735 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 90 transitions, 214 flow [2022-12-13 11:13:48,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 214 flow [2022-12-13 11:13:48,749 INFO L130 PetriNetUnfolder]: 60/274 cut-off events. [2022-12-13 11:13:48,750 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:13:48,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 274 events. 60/274 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1521 event pairs, 4 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 329. Up to 61 conditions per place. [2022-12-13 11:13:48,753 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 90 transitions, 214 flow [2022-12-13 11:13:48,753 INFO L226 LiptonReduction]: Number of co-enabled transitions 3884 [2022-12-13 11:13:48,759 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:13:48,760 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 26 [2022-12-13 11:13:48,760 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 214 flow [2022-12-13 11:13:48,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:48,760 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:13:48,760 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:48,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:13:48,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:13:48,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash -266073765, now seen corresponding path program 1 times [2022-12-13 11:13:48,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:48,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131588239] [2022-12-13 11:13:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:48,779 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:13:48,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118326646] [2022-12-13 11:13:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:48,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:13:48,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:13:48,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:13:48,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:13:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:48,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 11:13:48,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:13:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:13:48,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:13:48,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:48,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131588239] [2022-12-13 11:13:48,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:13:48,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118326646] [2022-12-13 11:13:48,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118326646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:48,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:48,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:13:48,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120160519] [2022-12-13 11:13:48,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:48,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:13:48,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:13:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:13:48,888 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 87 [2022-12-13 11:13:48,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:48,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:13:48,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 87 [2022-12-13 11:13:48,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:13:49,490 INFO L130 PetriNetUnfolder]: 7182/11866 cut-off events. [2022-12-13 11:13:49,491 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-12-13 11:13:49,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24034 conditions, 11866 events. 7182/11866 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 83697 event pairs, 3222 based on Foata normal form. 0/4201 useless extension candidates. Maximal degree in co-relation 18729. Up to 5860 conditions per place. [2022-12-13 11:13:49,520 INFO L137 encePairwiseOnDemand]: 73/87 looper letters, 140 selfloop transitions, 12 changer transitions 0/170 dead transitions. [2022-12-13 11:13:49,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 170 transitions, 698 flow [2022-12-13 11:13:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:13:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:13:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2022-12-13 11:13:49,521 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6350574712643678 [2022-12-13 11:13:49,521 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 214 flow. Second operand 4 states and 221 transitions. [2022-12-13 11:13:49,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 170 transitions, 698 flow [2022-12-13 11:13:49,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 170 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:13:49,525 INFO L231 Difference]: Finished difference. Result has 90 places, 95 transitions, 277 flow [2022-12-13 11:13:49,525 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2022-12-13 11:13:49,526 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -5 predicate places. [2022-12-13 11:13:49,526 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:13:49,526 INFO L89 Accepts]: Start accepts. Operand has 90 places, 95 transitions, 277 flow [2022-12-13 11:13:49,527 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:13:49,527 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:13:49,527 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 95 transitions, 277 flow [2022-12-13 11:13:49,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 95 transitions, 277 flow [2022-12-13 11:13:49,540 INFO L130 PetriNetUnfolder]: 71/321 cut-off events. [2022-12-13 11:13:49,540 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 11:13:49,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 321 events. 71/321 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1879 event pairs, 8 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 429. Up to 69 conditions per place. [2022-12-13 11:13:49,544 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 95 transitions, 277 flow [2022-12-13 11:13:49,544 INFO L226 LiptonReduction]: Number of co-enabled transitions 4344 [2022-12-13 11:13:51,766 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:13:51,767 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2241 [2022-12-13 11:13:51,767 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 277 flow [2022-12-13 11:13:51,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:51,768 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:13:51,768 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:51,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:13:51,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:13:51,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:13:51,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:51,969 INFO L85 PathProgramCache]: Analyzing trace with hash 192870542, now seen corresponding path program 1 times [2022-12-13 11:13:51,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:51,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071756605] [2022-12-13 11:13:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:51,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:13:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:52,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071756605] [2022-12-13 11:13:52,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071756605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:52,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:52,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:13:52,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763898865] [2022-12-13 11:13:52,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:52,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:13:52,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:52,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:13:52,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:52,097 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 87 [2022-12-13 11:13:52,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:52,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:13:52,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 87 [2022-12-13 11:13:52,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:13:52,754 INFO L130 PetriNetUnfolder]: 8224/13368 cut-off events. [2022-12-13 11:13:52,755 INFO L131 PetriNetUnfolder]: For 2322/2456 co-relation queries the response was YES. [2022-12-13 11:13:52,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30234 conditions, 13368 events. 8224/13368 cut-off events. For 2322/2456 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 88831 event pairs, 3685 based on Foata normal form. 293/6037 useless extension candidates. Maximal degree in co-relation 26689. Up to 7890 conditions per place. [2022-12-13 11:13:52,780 INFO L137 encePairwiseOnDemand]: 73/87 looper letters, 102 selfloop transitions, 3 changer transitions 25/147 dead transitions. [2022-12-13 11:13:52,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 147 transitions, 705 flow [2022-12-13 11:13:52,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:13:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:13:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2022-12-13 11:13:52,781 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2022-12-13 11:13:52,781 INFO L175 Difference]: Start difference. First operand has 90 places, 95 transitions, 277 flow. Second operand 3 states and 177 transitions. [2022-12-13 11:13:52,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 147 transitions, 705 flow [2022-12-13 11:13:52,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 147 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:13:52,787 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 299 flow [2022-12-13 11:13:52,787 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2022-12-13 11:13:52,789 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -3 predicate places. [2022-12-13 11:13:52,789 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:13:52,789 INFO L89 Accepts]: Start accepts. Operand has 92 places, 94 transitions, 299 flow [2022-12-13 11:13:52,790 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:13:52,790 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:13:52,790 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 94 transitions, 299 flow [2022-12-13 11:13:52,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 94 transitions, 299 flow [2022-12-13 11:13:52,809 INFO L130 PetriNetUnfolder]: 86/380 cut-off events. [2022-12-13 11:13:52,809 INFO L131 PetriNetUnfolder]: For 55/75 co-relation queries the response was YES. [2022-12-13 11:13:52,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 380 events. 86/380 cut-off events. For 55/75 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2254 event pairs, 20 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 611. Up to 81 conditions per place. [2022-12-13 11:13:52,813 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 94 transitions, 299 flow [2022-12-13 11:13:52,813 INFO L226 LiptonReduction]: Number of co-enabled transitions 4108 [2022-12-13 11:13:54,958 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:13:54,959 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2170 [2022-12-13 11:13:54,959 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 299 flow [2022-12-13 11:13:54,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:54,960 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:13:54,960 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:13:55,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:13:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1719353384, now seen corresponding path program 1 times [2022-12-13 11:13:55,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:55,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58423054] [2022-12-13 11:13:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:55,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:55,015 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:13:55,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802064486] [2022-12-13 11:13:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:55,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:13:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:13:55,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:13:55,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:13:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:55,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:13:55,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:13:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:13:55,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:13:55,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:55,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58423054] [2022-12-13 11:13:55,250 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:13:55,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802064486] [2022-12-13 11:13:55,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802064486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:55,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:55,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:13:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278503549] [2022-12-13 11:13:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:55,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:13:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:13:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:13:55,251 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 86 [2022-12-13 11:13:55,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:55,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:13:55,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 86 [2022-12-13 11:13:55,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:13:55,843 INFO L130 PetriNetUnfolder]: 5938/10152 cut-off events. [2022-12-13 11:13:55,843 INFO L131 PetriNetUnfolder]: For 1764/1888 co-relation queries the response was YES. [2022-12-13 11:13:55,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22791 conditions, 10152 events. 5938/10152 cut-off events. For 1764/1888 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 69024 event pairs, 5111 based on Foata normal form. 110/4522 useless extension candidates. Maximal degree in co-relation 19690. Up to 9236 conditions per place. [2022-12-13 11:13:55,865 INFO L137 encePairwiseOnDemand]: 83/86 looper letters, 57 selfloop transitions, 1 changer transitions 9/86 dead transitions. [2022-12-13 11:13:55,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 391 flow [2022-12-13 11:13:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:13:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:13:55,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2022-12-13 11:13:55,866 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2022-12-13 11:13:55,866 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 299 flow. Second operand 3 states and 119 transitions. [2022-12-13 11:13:55,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 391 flow [2022-12-13 11:13:55,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 372 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 11:13:55,877 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 198 flow [2022-12-13 11:13:55,877 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2022-12-13 11:13:55,879 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -9 predicate places. [2022-12-13 11:13:55,879 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:13:55,879 INFO L89 Accepts]: Start accepts. Operand has 86 places, 77 transitions, 198 flow [2022-12-13 11:13:55,880 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:13:55,880 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:13:55,880 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 77 transitions, 198 flow [2022-12-13 11:13:55,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 77 transitions, 198 flow [2022-12-13 11:13:55,894 INFO L130 PetriNetUnfolder]: 26/238 cut-off events. [2022-12-13 11:13:55,894 INFO L131 PetriNetUnfolder]: For 12/13 co-relation queries the response was YES. [2022-12-13 11:13:55,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 238 events. 26/238 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1162 event pairs, 3 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 296. Up to 21 conditions per place. [2022-12-13 11:13:55,897 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 77 transitions, 198 flow [2022-12-13 11:13:55,897 INFO L226 LiptonReduction]: Number of co-enabled transitions 2800 [2022-12-13 11:13:55,905 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:13:55,910 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 31 [2022-12-13 11:13:55,910 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 198 flow [2022-12-13 11:13:55,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:55,911 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:13:55,911 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:55,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:13:56,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:13:56,117 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:13:56,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:56,120 INFO L85 PathProgramCache]: Analyzing trace with hash 967602074, now seen corresponding path program 1 times [2022-12-13 11:13:56,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:56,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270699516] [2022-12-13 11:13:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:56,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:56,138 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:13:56,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56178314] [2022-12-13 11:13:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:56,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:13:56,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:13:56,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:13:56,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:13:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:56,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:13:56,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:13:56,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 11:13:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:13:56,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:13:56,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:56,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270699516] [2022-12-13 11:13:56,256 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:13:56,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56178314] [2022-12-13 11:13:56,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56178314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:56,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:56,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:13:56,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829354447] [2022-12-13 11:13:56,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:56,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:13:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:13:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:56,257 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 73 [2022-12-13 11:13:56,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:56,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:13:56,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 73 [2022-12-13 11:13:56,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:13:56,592 INFO L130 PetriNetUnfolder]: 3177/6137 cut-off events. [2022-12-13 11:13:56,593 INFO L131 PetriNetUnfolder]: For 182/182 co-relation queries the response was YES. [2022-12-13 11:13:56,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12509 conditions, 6137 events. 3177/6137 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 44990 event pairs, 1045 based on Foata normal form. 0/2673 useless extension candidates. Maximal degree in co-relation 12498. Up to 3529 conditions per place. [2022-12-13 11:13:56,603 INFO L137 encePairwiseOnDemand]: 59/73 looper letters, 40 selfloop transitions, 11 changer transitions 26/95 dead transitions. [2022-12-13 11:13:56,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 95 transitions, 391 flow [2022-12-13 11:13:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:13:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:13:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2022-12-13 11:13:56,604 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5981735159817352 [2022-12-13 11:13:56,604 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 198 flow. Second operand 3 states and 131 transitions. [2022-12-13 11:13:56,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 95 transitions, 391 flow [2022-12-13 11:13:56,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 95 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:13:56,608 INFO L231 Difference]: Finished difference. Result has 81 places, 58 transitions, 179 flow [2022-12-13 11:13:56,608 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=81, PETRI_TRANSITIONS=58} [2022-12-13 11:13:56,609 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -14 predicate places. [2022-12-13 11:13:56,609 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:13:56,609 INFO L89 Accepts]: Start accepts. Operand has 81 places, 58 transitions, 179 flow [2022-12-13 11:13:56,609 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:13:56,609 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:13:56,609 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 58 transitions, 179 flow [2022-12-13 11:13:56,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 179 flow [2022-12-13 11:13:56,619 INFO L130 PetriNetUnfolder]: 48/283 cut-off events. [2022-12-13 11:13:56,620 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 11:13:56,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 283 events. 48/283 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1629 event pairs, 4 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 440. Up to 58 conditions per place. [2022-12-13 11:13:56,621 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 179 flow [2022-12-13 11:13:56,621 INFO L226 LiptonReduction]: Number of co-enabled transitions 1124 [2022-12-13 11:13:59,676 INFO L241 LiptonReduction]: Total number of compositions: 9 [2022-12-13 11:13:59,677 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 3068 [2022-12-13 11:13:59,677 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 187 flow [2022-12-13 11:13:59,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:59,677 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:13:59,677 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:59,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 11:13:59,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:13:59,878 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:13:59,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1808053106, now seen corresponding path program 1 times [2022-12-13 11:13:59,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:59,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753779193] [2022-12-13 11:13:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:59,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:59,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:13:59,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216402809] [2022-12-13 11:13:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:59,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:13:59,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:13:59,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:13:59,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:14:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:14:00,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:14:00,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:14:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:14:00,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:14:00,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:14:00,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753779193] [2022-12-13 11:14:00,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:14:00,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216402809] [2022-12-13 11:14:00,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216402809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:14:00,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:14:00,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:14:00,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627714028] [2022-12-13 11:14:00,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:14:00,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:14:00,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:14:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:14:00,213 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2022-12-13 11:14:00,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:00,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:14:00,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2022-12-13 11:14:00,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:14:00,493 INFO L130 PetriNetUnfolder]: 2244/4103 cut-off events. [2022-12-13 11:14:00,494 INFO L131 PetriNetUnfolder]: For 920/920 co-relation queries the response was YES. [2022-12-13 11:14:00,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10077 conditions, 4103 events. 2244/4103 cut-off events. For 920/920 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 26825 event pairs, 537 based on Foata normal form. 0/2325 useless extension candidates. Maximal degree in co-relation 10066. Up to 1933 conditions per place. [2022-12-13 11:14:00,504 INFO L137 encePairwiseOnDemand]: 46/52 looper letters, 60 selfloop transitions, 4 changer transitions 39/115 dead transitions. [2022-12-13 11:14:00,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 115 transitions, 595 flow [2022-12-13 11:14:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:14:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:14:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2022-12-13 11:14:00,505 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7115384615384616 [2022-12-13 11:14:00,505 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 187 flow. Second operand 4 states and 148 transitions. [2022-12-13 11:14:00,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 115 transitions, 595 flow [2022-12-13 11:14:00,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 115 transitions, 551 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:14:00,509 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 171 flow [2022-12-13 11:14:00,509 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2022-12-13 11:14:00,510 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -34 predicate places. [2022-12-13 11:14:00,510 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:14:00,510 INFO L89 Accepts]: Start accepts. Operand has 61 places, 47 transitions, 171 flow [2022-12-13 11:14:00,510 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:14:00,510 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:14:00,511 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 47 transitions, 171 flow [2022-12-13 11:14:00,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 47 transitions, 171 flow [2022-12-13 11:14:00,523 INFO L130 PetriNetUnfolder]: 76/306 cut-off events. [2022-12-13 11:14:00,524 INFO L131 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2022-12-13 11:14:00,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 306 events. 76/306 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1852 event pairs, 10 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 528. Up to 65 conditions per place. [2022-12-13 11:14:00,526 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 47 transitions, 171 flow [2022-12-13 11:14:00,526 INFO L226 LiptonReduction]: Number of co-enabled transitions 764 [2022-12-13 11:14:00,828 INFO L241 LiptonReduction]: Total number of compositions: 2 [2022-12-13 11:14:00,829 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 319 [2022-12-13 11:14:00,829 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 170 flow [2022-12-13 11:14:00,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:00,829 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:14:00,829 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:14:00,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 11:14:01,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:14:01,030 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:14:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:14:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 914370093, now seen corresponding path program 1 times [2022-12-13 11:14:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:14:01,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533741194] [2022-12-13 11:14:01,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:01,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:14:01,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:14:01,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240158204] [2022-12-13 11:14:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:01,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:14:01,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:14:01,051 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:14:01,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:14:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:14:01,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 11:14:01,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:14:01,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:14:01,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-12-13 11:14:01,255 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 11:14:01,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 11:14:01,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-12-13 11:14:01,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-12-13 11:14:01,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-12-13 11:14:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:14:01,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:14:01,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:14:01,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533741194] [2022-12-13 11:14:01,427 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:14:01,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240158204] [2022-12-13 11:14:01,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240158204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:14:01,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:14:01,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:14:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79529544] [2022-12-13 11:14:01,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:14:01,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:14:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:01,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:14:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:14:01,428 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2022-12-13 11:14:01,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:01,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:14:01,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2022-12-13 11:14:01,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:14:01,791 INFO L130 PetriNetUnfolder]: 2364/4101 cut-off events. [2022-12-13 11:14:01,791 INFO L131 PetriNetUnfolder]: For 1898/1898 co-relation queries the response was YES. [2022-12-13 11:14:01,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10035 conditions, 4101 events. 2364/4101 cut-off events. For 1898/1898 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 26071 event pairs, 705 based on Foata normal form. 0/2543 useless extension candidates. Maximal degree in co-relation 10021. Up to 2074 conditions per place. [2022-12-13 11:14:01,800 INFO L137 encePairwiseOnDemand]: 29/43 looper letters, 51 selfloop transitions, 9 changer transitions 33/102 dead transitions. [2022-12-13 11:14:01,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 102 transitions, 540 flow [2022-12-13 11:14:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:14:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:14:01,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2022-12-13 11:14:01,801 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5775193798449613 [2022-12-13 11:14:01,801 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 170 flow. Second operand 6 states and 149 transitions. [2022-12-13 11:14:01,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 102 transitions, 540 flow [2022-12-13 11:14:01,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 102 transitions, 521 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 11:14:01,804 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 262 flow [2022-12-13 11:14:01,804 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2022-12-13 11:14:01,805 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -37 predicate places. [2022-12-13 11:14:01,805 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:14:01,805 INFO L89 Accepts]: Start accepts. Operand has 58 places, 51 transitions, 262 flow [2022-12-13 11:14:01,805 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:14:01,805 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:14:01,805 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 51 transitions, 262 flow [2022-12-13 11:14:01,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 262 flow [2022-12-13 11:14:01,824 INFO L130 PetriNetUnfolder]: 124/425 cut-off events. [2022-12-13 11:14:01,824 INFO L131 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2022-12-13 11:14:01,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 425 events. 124/425 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2905 event pairs, 26 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 926. Up to 138 conditions per place. [2022-12-13 11:14:01,827 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 262 flow [2022-12-13 11:14:01,827 INFO L226 LiptonReduction]: Number of co-enabled transitions 854 [2022-12-13 11:14:04,797 INFO L241 LiptonReduction]: Total number of compositions: 2 [2022-12-13 11:14:04,797 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2992 [2022-12-13 11:14:04,797 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 258 flow [2022-12-13 11:14:04,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:04,798 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:14:04,798 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:14:04,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 11:14:04,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:14:04,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:14:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:14:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1929271237, now seen corresponding path program 1 times [2022-12-13 11:14:04,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:14:04,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549740941] [2022-12-13 11:14:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:14:05,010 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:14:05,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307435784] [2022-12-13 11:14:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:05,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:14:05,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:14:05,012 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:14:05,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:14:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:14:05,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:14:05,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:14:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:14:05,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:14:05,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:14:05,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549740941] [2022-12-13 11:14:05,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:14:05,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307435784] [2022-12-13 11:14:05,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307435784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:14:05,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:14:05,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:14:05,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132717169] [2022-12-13 11:14:05,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:14:05,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:14:05,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:05,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:14:05,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:05,118 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2022-12-13 11:14:05,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:05,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:14:05,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2022-12-13 11:14:05,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:14:05,317 INFO L130 PetriNetUnfolder]: 1518/2775 cut-off events. [2022-12-13 11:14:05,318 INFO L131 PetriNetUnfolder]: For 1910/1910 co-relation queries the response was YES. [2022-12-13 11:14:05,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7332 conditions, 2775 events. 1518/2775 cut-off events. For 1910/1910 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16823 event pairs, 223 based on Foata normal form. 70/1886 useless extension candidates. Maximal degree in co-relation 7314. Up to 1843 conditions per place. [2022-12-13 11:14:05,341 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 33 selfloop transitions, 3 changer transitions 13/59 dead transitions. [2022-12-13 11:14:05,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 352 flow [2022-12-13 11:14:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:14:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:14:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2022-12-13 11:14:05,343 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2022-12-13 11:14:05,343 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 258 flow. Second operand 3 states and 79 transitions. [2022-12-13 11:14:05,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 352 flow [2022-12-13 11:14:05,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 334 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 11:14:05,346 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 197 flow [2022-12-13 11:14:05,346 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2022-12-13 11:14:05,346 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -42 predicate places. [2022-12-13 11:14:05,346 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:14:05,346 INFO L89 Accepts]: Start accepts. Operand has 53 places, 40 transitions, 197 flow [2022-12-13 11:14:05,347 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:14:05,347 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:14:05,347 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 40 transitions, 197 flow [2022-12-13 11:14:05,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 197 flow [2022-12-13 11:14:05,354 INFO L130 PetriNetUnfolder]: 41/136 cut-off events. [2022-12-13 11:14:05,354 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-12-13 11:14:05,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 136 events. 41/136 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 470 event pairs, 3 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 318. Up to 63 conditions per place. [2022-12-13 11:14:05,355 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 40 transitions, 197 flow [2022-12-13 11:14:05,356 INFO L226 LiptonReduction]: Number of co-enabled transitions 480 [2022-12-13 11:14:05,828 INFO L241 LiptonReduction]: Total number of compositions: 3 [2022-12-13 11:14:05,828 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 482 [2022-12-13 11:14:05,828 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 189 flow [2022-12-13 11:14:05,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:05,829 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:14:05,829 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:14:05,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 11:14:06,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:14:06,029 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:14:06,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:14:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash 456028633, now seen corresponding path program 1 times [2022-12-13 11:14:06,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:14:06,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375035647] [2022-12-13 11:14:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:06,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:14:06,040 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:14:06,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416175100] [2022-12-13 11:14:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:06,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:14:06,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:14:06,048 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:14:06,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:14:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:14:06,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 11:14:06,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:14:06,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 57 [2022-12-13 11:14:06,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 107 [2022-12-13 11:14:06,651 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 11:14:06,673 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:14:06,674 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2022-12-13 11:14:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:14:06,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:14:06,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:14:06,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 159 treesize of output 156 [2022-12-13 11:14:06,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 145 [2022-12-13 11:14:07,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-13 11:14:07,131 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:14:07,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 76 [2022-12-13 11:14:10,071 INFO L321 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2022-12-13 11:14:10,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 324 treesize of output 297 [2022-12-13 11:14:14,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:14:14,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 218 treesize of output 173 [2022-12-13 11:14:37,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:14:37,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:14:37,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375035647] [2022-12-13 11:14:37,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:14:37,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416175100] [2022-12-13 11:14:37,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416175100] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:14:37,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:14:37,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-12-13 11:14:37,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958137880] [2022-12-13 11:14:37,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:14:37,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:14:37,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:14:37,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:14:37,609 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2022-12-13 11:14:37,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 189 flow. Second operand has 16 states, 16 states have (on average 9.625) internal successors, (154), 16 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:37,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:14:37,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2022-12-13 11:14:37,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:15:07,048 WARN L233 SmtUtils]: Spent 24.42s on a formula simplification. DAG size of input: 123 DAG size of output: 96 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:15:19,828 WARN L233 SmtUtils]: Spent 11.68s on a formula simplification. DAG size of input: 86 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:15:28,976 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:15:49,676 WARN L233 SmtUtils]: Spent 14.89s on a formula simplification. DAG size of input: 114 DAG size of output: 104 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:16:00,443 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 77 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:16:25,851 WARN L233 SmtUtils]: Spent 11.54s on a formula simplification. DAG size of input: 96 DAG size of output: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:16:43,196 WARN L233 SmtUtils]: Spent 16.23s on a formula simplification. DAG size of input: 78 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:16:57,828 WARN L233 SmtUtils]: Spent 13.62s on a formula simplification. DAG size of input: 104 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:17:21,952 WARN L233 SmtUtils]: Spent 11.68s on a formula simplification. DAG size of input: 98 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:18:07,892 WARN L233 SmtUtils]: Spent 39.39s on a formula simplification. DAG size of input: 130 DAG size of output: 101 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:18:13,386 INFO L130 PetriNetUnfolder]: 1585/2738 cut-off events. [2022-12-13 11:18:13,387 INFO L131 PetriNetUnfolder]: For 6645/6645 co-relation queries the response was YES. [2022-12-13 11:18:13,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8654 conditions, 2738 events. 1585/2738 cut-off events. For 6645/6645 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14972 event pairs, 20 based on Foata normal form. 131/2393 useless extension candidates. Maximal degree in co-relation 8638. Up to 1193 conditions per place. [2022-12-13 11:18:13,394 INFO L137 encePairwiseOnDemand]: 17/34 looper letters, 147 selfloop transitions, 58 changer transitions 104/317 dead transitions. [2022-12-13 11:18:13,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 317 transitions, 1971 flow [2022-12-13 11:18:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 11:18:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-13 11:18:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 580 transitions. [2022-12-13 11:18:13,397 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5330882352941176 [2022-12-13 11:18:13,397 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 189 flow. Second operand 32 states and 580 transitions. [2022-12-13 11:18:13,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 317 transitions, 1971 flow [2022-12-13 11:18:13,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 317 transitions, 1915 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:18:13,403 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 706 flow [2022-12-13 11:18:13,403 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=706, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2022-12-13 11:18:13,403 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -9 predicate places. [2022-12-13 11:18:13,403 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:18:13,403 INFO L89 Accepts]: Start accepts. Operand has 86 places, 84 transitions, 706 flow [2022-12-13 11:18:13,405 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:18:13,405 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:18:13,405 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 84 transitions, 706 flow [2022-12-13 11:18:13,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 84 transitions, 706 flow [2022-12-13 11:18:13,444 INFO L130 PetriNetUnfolder]: 135/468 cut-off events. [2022-12-13 11:18:13,444 INFO L131 PetriNetUnfolder]: For 1008/1013 co-relation queries the response was YES. [2022-12-13 11:18:13,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 468 events. 135/468 cut-off events. For 1008/1013 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2964 event pairs, 19 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 1466. Up to 232 conditions per place. [2022-12-13 11:18:13,448 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 84 transitions, 706 flow [2022-12-13 11:18:13,448 INFO L226 LiptonReduction]: Number of co-enabled transitions 942 [2022-12-13 11:18:29,501 INFO L241 LiptonReduction]: Total number of compositions: 11 [2022-12-13 11:18:29,502 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 16099 [2022-12-13 11:18:29,502 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 707 flow [2022-12-13 11:18:29,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.625) internal successors, (154), 16 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:18:29,502 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:18:29,502 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:18:29,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 11:18:29,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:18:29,703 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:18:29,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:18:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash -494021581, now seen corresponding path program 1 times [2022-12-13 11:18:29,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:18:29,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230495067] [2022-12-13 11:18:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:18:29,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:18:29,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:18:29,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998435026] [2022-12-13 11:18:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:18:29,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:18:29,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:18:29,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:18:29,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:18:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:18:30,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 11:18:30,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:18:30,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 57 [2022-12-13 11:18:30,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 107 [2022-12-13 11:18:30,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 13 [2022-12-13 11:18:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:18:30,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:18:30,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:18:30,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 159 treesize of output 156 [2022-12-13 11:18:30,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 145 [2022-12-13 11:18:31,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-13 11:18:31,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:18:31,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 76 [2022-12-13 11:18:34,190 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:18:34,192 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 375 [2022-12-13 11:18:37,265 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:18:37,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 465 treesize of output 369 [2022-12-13 11:18:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:18:59,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:18:59,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230495067] [2022-12-13 11:18:59,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 11:18:59,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998435026] [2022-12-13 11:18:59,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998435026] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:18:59,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:18:59,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-12-13 11:18:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552282891] [2022-12-13 11:18:59,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:18:59,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:18:59,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:18:59,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:18:59,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:18:59,245 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2022-12-13 11:18:59,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 707 flow. Second operand has 20 states, 20 states have (on average 9.7) internal successors, (194), 20 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:18:59,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:18:59,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2022-12-13 11:18:59,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:19:12,610 WARN L233 SmtUtils]: Spent 12.80s on a formula simplification. DAG size of input: 146 DAG size of output: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:19:25,280 WARN L233 SmtUtils]: Spent 11.74s on a formula simplification. DAG size of input: 136 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:19:39,685 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 83 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:19:55,343 WARN L233 SmtUtils]: Spent 10.69s on a formula simplification. DAG size of input: 79 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:20:00,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 11:20:09,794 WARN L233 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 139 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:20:22,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 11:20:33,309 WARN L233 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 120 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:20:56,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 11:20:58,583 INFO L130 PetriNetUnfolder]: 2134/3628 cut-off events. [2022-12-13 11:20:58,583 INFO L131 PetriNetUnfolder]: For 10940/10940 co-relation queries the response was YES. [2022-12-13 11:20:58,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13893 conditions, 3628 events. 2134/3628 cut-off events. For 10940/10940 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 20604 event pairs, 160 based on Foata normal form. 163/3233 useless extension candidates. Maximal degree in co-relation 13867. Up to 1656 conditions per place. [2022-12-13 11:20:58,593 INFO L137 encePairwiseOnDemand]: 19/43 looper letters, 151 selfloop transitions, 75 changer transitions 104/338 dead transitions. [2022-12-13 11:20:58,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 338 transitions, 2948 flow [2022-12-13 11:20:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 11:20:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 11:20:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 557 transitions. [2022-12-13 11:20:58,599 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4466720128307939 [2022-12-13 11:20:58,599 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 707 flow. Second operand 29 states and 557 transitions. [2022-12-13 11:20:58,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 338 transitions, 2948 flow [2022-12-13 11:20:58,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 338 transitions, 2663 flow, removed 114 selfloop flow, removed 4 redundant places. [2022-12-13 11:20:58,617 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 1311 flow [2022-12-13 11:20:58,617 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1311, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2022-12-13 11:20:58,617 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 27 predicate places. [2022-12-13 11:20:58,617 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:20:58,617 INFO L89 Accepts]: Start accepts. Operand has 122 places, 120 transitions, 1311 flow [2022-12-13 11:20:58,619 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:20:58,619 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:20:58,619 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 120 transitions, 1311 flow [2022-12-13 11:20:58,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 120 transitions, 1311 flow [2022-12-13 11:20:58,664 INFO L130 PetriNetUnfolder]: 208/684 cut-off events. [2022-12-13 11:20:58,664 INFO L131 PetriNetUnfolder]: For 2772/2799 co-relation queries the response was YES. [2022-12-13 11:20:58,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2991 conditions, 684 events. 208/684 cut-off events. For 2772/2799 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4674 event pairs, 31 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 2950. Up to 351 conditions per place. [2022-12-13 11:20:58,670 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 120 transitions, 1311 flow [2022-12-13 11:20:58,670 INFO L226 LiptonReduction]: Number of co-enabled transitions 1314 [2022-12-13 11:21:03,104 INFO L241 LiptonReduction]: Total number of compositions: 4 [2022-12-13 11:21:03,105 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 4488 [2022-12-13 11:21:03,105 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 116 transitions, 1279 flow [2022-12-13 11:21:03,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.7) internal successors, (194), 20 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:21:03,105 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:21:03,106 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:21:03,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 11:21:03,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 11:21:03,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 11:21:03,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:21:03,307 INFO L85 PathProgramCache]: Analyzing trace with hash -136055960, now seen corresponding path program 1 times [2022-12-13 11:21:03,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:21:03,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206212753] [2022-12-13 11:21:03,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:21:03,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:21:03,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 11:21:03,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3684797] [2022-12-13 11:21:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:21:03,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:21:03,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:21:03,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:21:03,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:21:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:21:03,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-13 11:21:03,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:21:03,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:21:03,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-12-13 11:21:03,965 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 11:21:03,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 11:21:03,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-12-13 11:21:04,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-12-13 11:21:04,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 82 [2022-12-13 11:21:04,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 11:21:04,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 124 [2022-12-13 11:21:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:21:05,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:21:05,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:21:05,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 159 treesize of output 156 [2022-12-13 11:21:05,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 145 [2022-12-13 11:21:14,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:21:14,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 159 treesize of output 156 [2022-12-13 11:21:14,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 145 [2022-12-13 11:21:36,287 WARN L233 SmtUtils]: Spent 12.35s on a formula simplification. DAG size of input: 206 DAG size of output: 205 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:23:50,207 WARN L233 SmtUtils]: Spent 1.71m on a formula simplification. DAG size of input: 335 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:24:48,447 WARN L233 SmtUtils]: Spent 32.19s on a formula simplification that was a NOOP. DAG size: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:25:55,043 WARN L233 SmtUtils]: Spent 42.20s on a formula simplification that was a NOOP. DAG size: 293 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:26:59,723 WARN L233 SmtUtils]: Spent 41.06s on a formula simplification that was a NOOP. DAG size: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-12-13 11:28:13,743 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-13 11:28:13,744 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-13 11:28:13,907 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-13 11:28:13,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-12-13 11:28:13,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:28:14,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:14,109 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 1ms.. [2022-12-13 11:28:14,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2022-12-13 11:28:14,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2022-12-13 11:28:14,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-12-13 11:28:14,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-12-13 11:28:14,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-12-13 11:28:14,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2022-12-13 11:28:14,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2022-12-13 11:28:14,110 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:14,113 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:28:14,113 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:28:14,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:28:14 BasicIcfg [2022-12-13 11:28:14,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:28:14,114 INFO L158 Benchmark]: Toolchain (without parser) took 878463.12ms. Allocated memory was 169.9MB in the beginning and 661.7MB in the end (delta: 491.8MB). Free memory was 125.7MB in the beginning and 390.4MB in the end (delta: -264.8MB). Peak memory consumption was 541.0MB. Max. memory is 8.0GB. [2022-12-13 11:28:14,115 INFO L158 Benchmark]: CDTParser took 0.77ms. Allocated memory is still 169.9MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 11:28:14,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.36ms. Allocated memory is still 169.9MB. Free memory was 125.6MB in the beginning and 140.5MB in the end (delta: -15.0MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. [2022-12-13 11:28:14,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.36ms. Allocated memory is still 169.9MB. Free memory was 140.5MB in the beginning and 137.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-13 11:28:14,115 INFO L158 Benchmark]: Boogie Preprocessor took 31.53ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 136.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 11:28:14,115 INFO L158 Benchmark]: RCFGBuilder took 390.96ms. Allocated memory is still 169.9MB. Free memory was 136.3MB in the beginning and 118.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-13 11:28:14,115 INFO L158 Benchmark]: TraceAbstraction took 877567.25ms. Allocated memory was 169.9MB in the beginning and 661.7MB in the end (delta: 491.8MB). Free memory was 116.4MB in the beginning and 390.4MB in the end (delta: -274.0MB). Peak memory consumption was 530.8MB. Max. memory is 8.0GB. [2022-12-13 11:28:14,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77ms. Allocated memory is still 169.9MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 411.36ms. Allocated memory is still 169.9MB. Free memory was 125.6MB in the beginning and 140.5MB in the end (delta: -15.0MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.36ms. Allocated memory is still 169.9MB. Free memory was 140.5MB in the beginning and 137.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.53ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 136.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 390.96ms. Allocated memory is still 169.9MB. Free memory was 136.3MB in the beginning and 118.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 877567.25ms. Allocated memory was 169.9MB in the beginning and 661.7MB in the end (delta: 491.8MB). Free memory was 116.4MB in the beginning and 390.4MB in the end (delta: -274.0MB). Peak memory consumption was 530.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 133 PlacesBefore, 95 PlacesAfterwards, 137 TransitionsBefore, 99 TransitionsAfterwards, 4498 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 42 TrivialYvCompositions, 58 ConcurrentYvCompositions, 4 ChoiceCompositions, 113 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10734, independent: 10520, independent conditional: 10520, independent unconditional: 0, dependent: 202, dependent conditional: 202, dependent unconditional: 0, unknown: 12, unknown conditional: 12, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5400, independent: 5343, independent conditional: 0, independent unconditional: 5343, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5400, independent: 5343, independent conditional: 0, independent unconditional: 5343, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5400, independent: 5205, independent conditional: 0, independent unconditional: 5205, dependent: 195, dependent conditional: 0, dependent unconditional: 195, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 195, independent: 138, independent conditional: 0, independent unconditional: 138, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2469, independent: 206, independent conditional: 0, independent unconditional: 206, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 2160, unknown conditional: 0, unknown unconditional: 2160] ], Cache Queries: [ total: 10734, independent: 5177, independent conditional: 5177, independent unconditional: 0, dependent: 146, dependent conditional: 146, dependent unconditional: 0, unknown: 5411, unknown conditional: 5411, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 5507, Positive cache size: 5451, Positive conditional cache size: 5451, Positive unconditional cache size: 0, Negative cache size: 56, Negative conditional cache size: 56, Negative unconditional cache size: 0, Unknown cache size: 1, Unknown conditional cache size: 1, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 83 PlacesBefore, 83 PlacesAfterwards, 87 TransitionsBefore, 87 TransitionsAfterwards, 3756 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1226, independent: 1162, independent conditional: 1162, independent unconditional: 0, dependent: 61, dependent conditional: 61, dependent unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 611, independent: 572, independent conditional: 0, independent unconditional: 572, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 611, independent: 572, independent conditional: 0, independent unconditional: 572, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 611, independent: 548, independent conditional: 0, independent unconditional: 548, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 63, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2467, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 2170, unknown conditional: 0, unknown unconditional: 2170] ], Cache Queries: [ total: 1226, independent: 590, independent conditional: 590, independent unconditional: 0, dependent: 23, dependent conditional: 23, dependent unconditional: 0, unknown: 613, unknown conditional: 613, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 610, Positive cache size: 572, Positive conditional cache size: 572, Positive unconditional cache size: 0, Negative cache size: 38, Negative conditional cache size: 38, Negative unconditional cache size: 0, Unknown cache size: 1, Unknown conditional cache size: 1, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 86 PlacesBefore, 86 PlacesAfterwards, 90 TransitionsBefore, 90 TransitionsAfterwards, 3884 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 717, independent: 678, independent conditional: 678, independent unconditional: 0, dependent: 36, dependent conditional: 36, dependent unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 94, independent: 94, independent conditional: 3, independent unconditional: 91, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 94, independent: 94, independent conditional: 3, independent unconditional: 91, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 94, independent: 92, independent conditional: 0, independent unconditional: 92, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 717, independent: 584, independent conditional: 584, independent unconditional: 0, dependent: 36, dependent conditional: 36, dependent unconditional: 0, unknown: 97, unknown conditional: 97, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 704, Positive cache size: 666, Positive conditional cache size: 666, Positive unconditional cache size: 0, Negative cache size: 38, Negative conditional cache size: 38, Negative unconditional cache size: 0, Unknown cache size: 1, Unknown conditional cache size: 1, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 90 PlacesBefore, 90 PlacesAfterwards, 95 TransitionsBefore, 95 TransitionsAfterwards, 4344 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 801, independent: 766, independent conditional: 766, independent unconditional: 0, dependent: 32, dependent conditional: 32, dependent unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 293, independent: 289, independent conditional: 76, independent unconditional: 213, dependent: 3, dependent conditional: 2, dependent unconditional: 1, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 293, independent: 289, independent conditional: 76, independent unconditional: 213, dependent: 3, dependent conditional: 2, dependent unconditional: 1, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 293, independent: 277, independent conditional: 0, independent unconditional: 277, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 12, independent conditional: 12, independent unconditional: 0, dependent: 3, dependent conditional: 2, dependent unconditional: 1, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2218, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 3, dependent conditional: 2, dependent unconditional: 1, unknown: 2200, unknown conditional: 0, unknown unconditional: 2200] ], Cache Queries: [ total: 801, independent: 477, independent conditional: 477, independent unconditional: 0, dependent: 29, dependent conditional: 29, dependent unconditional: 0, unknown: 295, unknown conditional: 295, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 996, Positive cache size: 955, Positive conditional cache size: 955, Positive unconditional cache size: 0, Negative cache size: 41, Negative conditional cache size: 41, Negative unconditional cache size: 0, Unknown cache size: 2, Unknown conditional cache size: 2, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 91 PlacesBefore, 91 PlacesAfterwards, 94 TransitionsBefore, 94 TransitionsAfterwards, 4108 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 428, independent: 413, independent conditional: 413, independent unconditional: 0, dependent: 13, dependent conditional: 13, dependent unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 140, independent: 139, independent conditional: 26, independent unconditional: 113, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 140, independent: 139, independent conditional: 26, independent unconditional: 113, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 140, independent: 139, independent conditional: 0, independent unconditional: 139, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2142, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2142, unknown conditional: 0, unknown unconditional: 2142] ], Cache Queries: [ total: 428, independent: 274, independent conditional: 274, independent unconditional: 0, dependent: 13, dependent conditional: 13, dependent unconditional: 0, unknown: 141, unknown conditional: 141, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1135, Positive cache size: 1094, Positive conditional cache size: 1094, Positive unconditional cache size: 0, Negative cache size: 41, Negative conditional cache size: 41, Negative unconditional cache size: 0, Unknown cache size: 3, Unknown conditional cache size: 3, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 80 PlacesBefore, 80 PlacesAfterwards, 77 TransitionsBefore, 77 TransitionsAfterwards, 2800 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 366, independent: 348, independent conditional: 348, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 12, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 12, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 366, independent: 337, independent conditional: 337, independent unconditional: 0, dependent: 17, dependent conditional: 17, dependent unconditional: 0, unknown: 12, unknown conditional: 12, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1147, Positive cache size: 1105, Positive conditional cache size: 1105, Positive unconditional cache size: 0, Negative cache size: 42, Negative conditional cache size: 42, Negative unconditional cache size: 0, Unknown cache size: 3, Unknown conditional cache size: 3, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 62 PlacesBefore, 58 PlacesAfterwards, 58 TransitionsBefore, 54 TransitionsAfterwards, 1124 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 206, independent: 204, independent conditional: 204, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 121, independent: 120, independent conditional: 28, independent unconditional: 92, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 121, independent: 120, independent conditional: 28, independent unconditional: 92, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 121, independent: 120, independent conditional: 0, independent unconditional: 120, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2146, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2146, unknown conditional: 0, unknown unconditional: 2146] ], Cache Queries: [ total: 206, independent: 84, independent conditional: 84, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 122, unknown conditional: 122, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1267, Positive cache size: 1225, Positive conditional cache size: 1225, Positive unconditional cache size: 0, Negative cache size: 42, Negative conditional cache size: 42, Negative unconditional cache size: 0, Unknown cache size: 4, Unknown conditional cache size: 4, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 52 PlacesBefore, 51 PlacesAfterwards, 47 TransitionsBefore, 46 TransitionsAfterwards, 764 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27, independent: 26, independent conditional: 26, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, independent: 25, independent conditional: 12, independent unconditional: 13, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 25, independent: 25, independent conditional: 12, independent unconditional: 13, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 25, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 27, independent: 1, independent conditional: 1, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 26, unknown conditional: 26, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1292, Positive cache size: 1250, Positive conditional cache size: 1250, Positive unconditional cache size: 0, Negative cache size: 42, Negative conditional cache size: 42, Negative unconditional cache size: 0, Unknown cache size: 4, Unknown conditional cache size: 4, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 55 PlacesBefore, 53 PlacesAfterwards, 51 TransitionsBefore, 49 TransitionsAfterwards, 854 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48, independent: 46, independent conditional: 46, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 36, independent: 34, independent conditional: 18, independent unconditional: 16, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 36, independent: 34, independent conditional: 18, independent unconditional: 16, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 36, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 1, independent conditional: 1, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2186, independent: 32, independent conditional: 32, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 2151, unknown conditional: 0, unknown unconditional: 2151] ], Cache Queries: [ total: 48, independent: 12, independent conditional: 12, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 36, unknown conditional: 36, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1327, Positive cache size: 1284, Positive conditional cache size: 1284, Positive unconditional cache size: 0, Negative cache size: 43, Negative conditional cache size: 43, Negative unconditional cache size: 0, Unknown cache size: 5, Unknown conditional cache size: 5, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 50 PlacesBefore, 48 PlacesAfterwards, 40 TransitionsBefore, 37 TransitionsAfterwards, 480 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 3 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, independent: 29, independent conditional: 29, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 19, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 19, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29, independent: 10, independent conditional: 10, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 19, unknown conditional: 19, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1346, Positive cache size: 1303, Positive conditional cache size: 1303, Positive unconditional cache size: 0, Negative cache size: 43, Negative conditional cache size: 43, Negative unconditional cache size: 0, Unknown cache size: 5, Unknown conditional cache size: 5, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.1s, 86 PlacesBefore, 80 PlacesAfterwards, 84 TransitionsBefore, 78 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 114, independent: 105, independent conditional: 105, independent unconditional: 0, dependent: 9, dependent conditional: 9, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 106, independent: 97, independent conditional: 97, independent unconditional: 0, dependent: 9, dependent conditional: 9, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 106, independent: 97, independent conditional: 97, independent unconditional: 0, dependent: 9, dependent conditional: 9, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 106, independent: 97, independent conditional: 0, independent unconditional: 97, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 9, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 9, dependent conditional: 9, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 254, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 254, dependent conditional: 254, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 114, independent: 8, independent conditional: 8, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 106, unknown conditional: 106, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1452, Positive cache size: 1400, Positive conditional cache size: 1400, Positive unconditional cache size: 0, Negative cache size: 52, Negative conditional cache size: 52, Negative unconditional cache size: 0, Unknown cache size: 5, Unknown conditional cache size: 5, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 122 PlacesBefore, 118 PlacesAfterwards, 120 TransitionsBefore, 116 TransitionsAfterwards, 1314 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19, independent: 16, independent conditional: 16, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, independent: 16, independent conditional: 16, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 19, independent: 16, independent conditional: 16, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 19, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 120, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 120, dependent conditional: 120, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 19, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 19, unknown conditional: 19, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1471, Positive cache size: 1416, Positive conditional cache size: 1416, Positive unconditional cache size: 0, Negative cache size: 55, Negative conditional cache size: 55, Negative unconditional cache size: 0, Unknown cache size: 5, Unknown conditional cache size: 5, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 1ms.. - TimeoutResultAtElement [Line: 764]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 1ms.. - TimeoutResultAtElement [Line: 763]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 1ms.. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 1ms.. - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 1ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 212 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 877.5s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 339.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1440 SdHoareTripleChecker+Valid, 68.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1440 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 67.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 244 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3770 IncrementalHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 244 mSolverCounterUnsat, 6 mSDtfsCounter, 3770 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 289.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1311occurred in iteration=11, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 60.9s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 142 ConstructedInterpolants, 1 QuantifiedInterpolants, 4854 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1882 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 5/47 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown