/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 15:43:34,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 15:43:34,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 15:43:34,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-28 15:43:34,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 15:43:34,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 15:43:34,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 15:43:34,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 15:43:34,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 15:43:34,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 15:43:34,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 15:43:34,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 15:43:34,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 15:43:34,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 15:43:34,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 15:43:34,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 15:43:34,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 15:43:34,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 15:43:34,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 15:43:34,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 15:43:34,707 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 [2021-04-28 15:43:34,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 15:43:34,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 15:43:34,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 15:43:34,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 15:43:34,768 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 15:43:34,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 15:43:34,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 15:43:34,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 15:43:34,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 15:43:34,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 15:43:34,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 15:43:34,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 15:43:34,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 15:43:34,771 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 15:43:34,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 15:43:34,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 15:43:34,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 15:43:34,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 15:43:34,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 15:43:34,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 15:43:34,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 15:43:34,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 15:43:34,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 15:43:34,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 15:43:34,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 15:43:34,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 15:43:34,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 15:43:34,777 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 15:43:34,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 15:43:34,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 15:43:34,778 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 15:43:35,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 15:43:35,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 15:43:35,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 15:43:35,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 15:43:35,251 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 15:43:35,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-04-28 15:43:35,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e7e254e/0a4eb308a525401c85560d6c35f1dfad/FLAG8c54dde5f [2021-04-28 15:43:36,053 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 15:43:36,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-04-28 15:43:36,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e7e254e/0a4eb308a525401c85560d6c35f1dfad/FLAG8c54dde5f [2021-04-28 15:43:36,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e7e254e/0a4eb308a525401c85560d6c35f1dfad [2021-04-28 15:43:36,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 15:43:36,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 15:43:36,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 15:43:36,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 15:43:36,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 15:43:36,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:43:36" (1/1) ... [2021-04-28 15:43:36,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d0a280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:36, skipping insertion in model container [2021-04-28 15:43:36,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:43:36" (1/1) ... [2021-04-28 15:43:36,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 15:43:36,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 15:43:36,856 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2021-04-28 15:43:36,863 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2021-04-28 15:43:36,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 15:43:36,879 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 15:43:36,918 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2021-04-28 15:43:36,922 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2021-04-28 15:43:36,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 15:43:37,007 INFO L208 MainTranslator]: Completed translation [2021-04-28 15:43:37,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37 WrapperNode [2021-04-28 15:43:37,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 15:43:37,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 15:43:37,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 15:43:37,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 15:43:37,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... [2021-04-28 15:43:37,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... [2021-04-28 15:43:37,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 15:43:37,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 15:43:37,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 15:43:37,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 15:43:37,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... [2021-04-28 15:43:37,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... [2021-04-28 15:43:37,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... [2021-04-28 15:43:37,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... [2021-04-28 15:43:37,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... [2021-04-28 15:43:37,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... [2021-04-28 15:43:37,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... [2021-04-28 15:43:37,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 15:43:37,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 15:43:37,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 15:43:37,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 15:43:37,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 15:43:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-04-28 15:43:37,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-04-28 15:43:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 15:43:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 15:43:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 15:43:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 15:43:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 15:43:37,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 15:43:37,332 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 15:43:37,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 15:43:37,710 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-04-28 15:43:37,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:43:37 BoogieIcfgContainer [2021-04-28 15:43:37,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 15:43:37,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 15:43:37,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 15:43:37,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 15:43:37,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 03:43:36" (1/3) ... [2021-04-28 15:43:37,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7f5bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:43:37, skipping insertion in model container [2021-04-28 15:43:37,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:37" (2/3) ... [2021-04-28 15:43:37,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7f5bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:43:37, skipping insertion in model container [2021-04-28 15:43:37,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:43:37" (3/3) ... [2021-04-28 15:43:37,723 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-04-28 15:43:37,731 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 15:43:37,735 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-04-28 15:43:37,736 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 15:43:37,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,779 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,780 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,780 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,780 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:37,785 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 15:43:37,810 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-28 15:43:37,840 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 15:43:37,840 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 15:43:37,840 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 15:43:37,840 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 15:43:37,841 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 15:43:37,841 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 15:43:37,841 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 15:43:37,841 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 15:43:37,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2021-04-28 15:43:37,909 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-04-28 15:43:37,909 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:43:37,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2021-04-28 15:43:37,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 88 transitions, 181 flow [2021-04-28 15:43:37,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 87 transitions, 177 flow [2021-04-28 15:43:37,926 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:43:37,942 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 87 transitions, 177 flow [2021-04-28 15:43:37,946 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 87 transitions, 177 flow [2021-04-28 15:43:37,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 87 transitions, 177 flow [2021-04-28 15:43:37,989 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-04-28 15:43:37,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:43:37,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 142 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2021-04-28 15:43:37,999 INFO L146 LiptonReduction]: Number of co-enabled transitions 2542 [2021-04-28 15:43:44,723 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 15:43:44,898 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 15:43:45,106 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-04-28 15:43:45,315 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-04-28 15:43:47,334 INFO L158 LiptonReduction]: Checked pairs total: 12091 [2021-04-28 15:43:47,334 INFO L160 LiptonReduction]: Total number of compositions: 112 [2021-04-28 15:43:47,338 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9413 [2021-04-28 15:43:47,361 INFO L129 PetriNetUnfolder]: 13/90 cut-off events. [2021-04-28 15:43:47,361 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:43:47,361 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:43:47,362 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:43:47,363 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:43:47,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:43:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1546292195, now seen corresponding path program 1 times [2021-04-28 15:43:47,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:43:47,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912600121] [2021-04-28 15:43:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:43:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:43:47,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:47,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:47,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:47,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:43:47,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912600121] [2021-04-28 15:43:47,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:43:47,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 15:43:47,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661237061] [2021-04-28 15:43:47,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-04-28 15:43:47,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:43:47,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-04-28 15:43:47,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-04-28 15:43:47,585 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 200 [2021-04-28 15:43:47,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 109 transitions, 221 flow. Second operand has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:43:47,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 200 [2021-04-28 15:43:47,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:43:47,608 INFO L129 PetriNetUnfolder]: 12/76 cut-off events. [2021-04-28 15:43:47,609 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:43:47,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 12/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 262 event pairs, 0 based on Foata normal form. 11/39 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-04-28 15:43:47,611 INFO L132 encePairwiseOnDemand]: 170/200 looper letters, 0 selfloop transitions, 0 changer transitions 23/76 dead transitions. [2021-04-28 15:43:47,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 155 flow [2021-04-28 15:43:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-04-28 15:43:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-04-28 15:43:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 338 transitions. [2021-04-28 15:43:47,628 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.845 [2021-04-28 15:43:47,628 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 338 transitions. [2021-04-28 15:43:47,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 338 transitions. [2021-04-28 15:43:47,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:43:47,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 338 transitions. [2021-04-28 15:43:47,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,647 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,649 INFO L185 Difference]: Start difference. First operand has 94 places, 109 transitions, 221 flow. Second operand 2 states and 338 transitions. [2021-04-28 15:43:47,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 155 flow [2021-04-28 15:43:47,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 15:43:47,656 INFO L241 Difference]: Finished difference. Result has 68 places, 53 transitions, 108 flow [2021-04-28 15:43:47,658 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2021-04-28 15:43:47,659 INFO L343 CegarLoopForPetriNet]: 94 programPoint places, -26 predicate places. [2021-04-28 15:43:47,659 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:43:47,660 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 53 transitions, 108 flow [2021-04-28 15:43:47,660 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 53 transitions, 108 flow [2021-04-28 15:43:47,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 53 transitions, 108 flow [2021-04-28 15:43:47,667 INFO L129 PetriNetUnfolder]: 12/53 cut-off events. [2021-04-28 15:43:47,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:43:47,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 53 events. 12/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 119 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2021-04-28 15:43:47,670 INFO L146 LiptonReduction]: Number of co-enabled transitions 1276 [2021-04-28 15:43:47,767 INFO L158 LiptonReduction]: Checked pairs total: 2562 [2021-04-28 15:43:47,768 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-28 15:43:47,768 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 109 [2021-04-28 15:43:47,770 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 54 transitions, 110 flow [2021-04-28 15:43:47,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,771 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:43:47,771 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:43:47,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 15:43:47,772 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:43:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:43:47,773 INFO L82 PathProgramCache]: Analyzing trace with hash 777195206, now seen corresponding path program 1 times [2021-04-28 15:43:47,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:43:47,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610983781] [2021-04-28 15:43:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:43:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:43:47,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:47,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:47,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:47,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-28 15:43:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:43:47,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610983781] [2021-04-28 15:43:47,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:43:47,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 15:43:47,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463745068] [2021-04-28 15:43:47,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 15:43:47,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:43:47,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 15:43:47,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 15:43:47,847 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 201 [2021-04-28 15:43:47,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 54 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:43:47,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 201 [2021-04-28 15:43:47,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:43:47,914 INFO L129 PetriNetUnfolder]: 153/380 cut-off events. [2021-04-28 15:43:47,915 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:43:47,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 380 events. 153/380 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1782 event pairs, 6 based on Foata normal form. 7/183 useless extension candidates. Maximal degree in co-relation 536. Up to 92 conditions per place. [2021-04-28 15:43:47,919 INFO L132 encePairwiseOnDemand]: 195/201 looper letters, 16 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2021-04-28 15:43:47,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 176 flow [2021-04-28 15:43:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 15:43:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 15:43:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2021-04-28 15:43:47,923 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6252072968490879 [2021-04-28 15:43:47,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2021-04-28 15:43:47,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2021-04-28 15:43:47,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:43:47,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2021-04-28 15:43:47,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,935 INFO L185 Difference]: Start difference. First operand has 45 places, 54 transitions, 110 flow. Second operand 3 states and 377 transitions. [2021-04-28 15:43:47,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 176 flow [2021-04-28 15:43:47,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-28 15:43:47,940 INFO L241 Difference]: Finished difference. Result has 49 places, 61 transitions, 170 flow [2021-04-28 15:43:47,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=61} [2021-04-28 15:43:47,941 INFO L343 CegarLoopForPetriNet]: 94 programPoint places, -45 predicate places. [2021-04-28 15:43:47,941 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:43:47,942 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 61 transitions, 170 flow [2021-04-28 15:43:47,942 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 61 transitions, 170 flow [2021-04-28 15:43:47,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 61 transitions, 170 flow [2021-04-28 15:43:47,967 INFO L129 PetriNetUnfolder]: 96/269 cut-off events. [2021-04-28 15:43:47,968 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-28 15:43:47,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 269 events. 96/269 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1175 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 390. Up to 44 conditions per place. [2021-04-28 15:43:47,975 INFO L146 LiptonReduction]: Number of co-enabled transitions 1556 [2021-04-28 15:43:47,982 INFO L158 LiptonReduction]: Checked pairs total: 1232 [2021-04-28 15:43:47,983 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:43:47,983 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-04-28 15:43:47,985 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 61 transitions, 170 flow [2021-04-28 15:43:47,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:47,986 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:43:47,986 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:43:47,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 15:43:47,987 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:43:47,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:43:47,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1128580430, now seen corresponding path program 1 times [2021-04-28 15:43:47,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:43:47,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727625953] [2021-04-28 15:43:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:43:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:43:48,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:48,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:48,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:48,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:43:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:43:48,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727625953] [2021-04-28 15:43:48,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:43:48,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 15:43:48,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080977946] [2021-04-28 15:43:48,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 15:43:48,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:43:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 15:43:48,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 15:43:48,099 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 201 [2021-04-28 15:43:48,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 61 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:43:48,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 201 [2021-04-28 15:43:48,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:43:48,148 INFO L129 PetriNetUnfolder]: 108/278 cut-off events. [2021-04-28 15:43:48,148 INFO L130 PetriNetUnfolder]: For 29/53 co-relation queries the response was YES. [2021-04-28 15:43:48,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 278 events. 108/278 cut-off events. For 29/53 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1168 event pairs, 0 based on Foata normal form. 9/136 useless extension candidates. Maximal degree in co-relation 518. Up to 69 conditions per place. [2021-04-28 15:43:48,152 INFO L132 encePairwiseOnDemand]: 194/201 looper letters, 12 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2021-04-28 15:43:48,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 210 flow [2021-04-28 15:43:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 15:43:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 15:43:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2021-04-28 15:43:48,154 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6218905472636815 [2021-04-28 15:43:48,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2021-04-28 15:43:48,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2021-04-28 15:43:48,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:43:48,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2021-04-28 15:43:48,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,160 INFO L185 Difference]: Start difference. First operand has 49 places, 61 transitions, 170 flow. Second operand 3 states and 375 transitions. [2021-04-28 15:43:48,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 210 flow [2021-04-28 15:43:48,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 15:43:48,164 INFO L241 Difference]: Finished difference. Result has 50 places, 61 transitions, 186 flow [2021-04-28 15:43:48,164 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=50, PETRI_TRANSITIONS=61} [2021-04-28 15:43:48,165 INFO L343 CegarLoopForPetriNet]: 94 programPoint places, -44 predicate places. [2021-04-28 15:43:48,165 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:43:48,165 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 61 transitions, 186 flow [2021-04-28 15:43:48,166 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 61 transitions, 186 flow [2021-04-28 15:43:48,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 61 transitions, 186 flow [2021-04-28 15:43:48,186 INFO L129 PetriNetUnfolder]: 96/266 cut-off events. [2021-04-28 15:43:48,186 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-28 15:43:48,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 266 events. 96/266 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1131 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 427. Up to 44 conditions per place. [2021-04-28 15:43:48,191 INFO L146 LiptonReduction]: Number of co-enabled transitions 1484 [2021-04-28 15:43:48,196 INFO L158 LiptonReduction]: Checked pairs total: 1232 [2021-04-28 15:43:48,196 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:43:48,197 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-04-28 15:43:48,199 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 61 transitions, 186 flow [2021-04-28 15:43:48,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,199 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:43:48,200 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:43:48,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 15:43:48,200 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:43:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:43:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1273303870, now seen corresponding path program 1 times [2021-04-28 15:43:48,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:43:48,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087221121] [2021-04-28 15:43:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:43:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:43:48,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:48,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:48,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:48,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-28 15:43:48,249 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-28 15:43:48,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:48,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:48,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:43:48,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087221121] [2021-04-28 15:43:48,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:43:48,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 15:43:48,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087903891] [2021-04-28 15:43:48,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 15:43:48,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:43:48,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 15:43:48,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 15:43:48,255 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 201 [2021-04-28 15:43:48,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 61 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:43:48,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 201 [2021-04-28 15:43:48,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:43:48,363 INFO L129 PetriNetUnfolder]: 338/705 cut-off events. [2021-04-28 15:43:48,364 INFO L130 PetriNetUnfolder]: For 46/70 co-relation queries the response was YES. [2021-04-28 15:43:48,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 705 events. 338/705 cut-off events. For 46/70 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3350 event pairs, 57 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 1243. Up to 259 conditions per place. [2021-04-28 15:43:48,370 INFO L132 encePairwiseOnDemand]: 190/201 looper letters, 20 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2021-04-28 15:43:48,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 256 flow [2021-04-28 15:43:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 15:43:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 15:43:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2021-04-28 15:43:48,373 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5870646766169154 [2021-04-28 15:43:48,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2021-04-28 15:43:48,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2021-04-28 15:43:48,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:43:48,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2021-04-28 15:43:48,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,378 INFO L185 Difference]: Start difference. First operand has 50 places, 61 transitions, 186 flow. Second operand 3 states and 354 transitions. [2021-04-28 15:43:48,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 256 flow [2021-04-28 15:43:48,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 15:43:48,383 INFO L241 Difference]: Finished difference. Result has 53 places, 66 transitions, 234 flow [2021-04-28 15:43:48,383 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2021-04-28 15:43:48,384 INFO L343 CegarLoopForPetriNet]: 94 programPoint places, -41 predicate places. [2021-04-28 15:43:48,384 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:43:48,384 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 66 transitions, 234 flow [2021-04-28 15:43:48,384 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 66 transitions, 234 flow [2021-04-28 15:43:48,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 66 transitions, 234 flow [2021-04-28 15:43:48,425 INFO L129 PetriNetUnfolder]: 246/570 cut-off events. [2021-04-28 15:43:48,425 INFO L130 PetriNetUnfolder]: For 53/65 co-relation queries the response was YES. [2021-04-28 15:43:48,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 570 events. 246/570 cut-off events. For 53/65 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2836 event pairs, 34 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 996. Up to 171 conditions per place. [2021-04-28 15:43:48,433 INFO L146 LiptonReduction]: Number of co-enabled transitions 1190 [2021-04-28 15:43:48,471 INFO L158 LiptonReduction]: Checked pairs total: 465 [2021-04-28 15:43:48,471 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:43:48,471 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 87 [2021-04-28 15:43:48,473 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 234 flow [2021-04-28 15:43:48,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:43:48,474 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:43:48,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 15:43:48,475 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:43:48,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:43:48,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1146952598, now seen corresponding path program 1 times [2021-04-28 15:43:48,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:43:48,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397927904] [2021-04-28 15:43:48,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:43:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:43:48,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:48,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:48,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:48,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-28 15:43:48,513 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-28 15:43:48,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:48,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:43:48,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:43:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:43:48,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397927904] [2021-04-28 15:43:48,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:43:48,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 15:43:48,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216938793] [2021-04-28 15:43:48,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 15:43:48,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:43:48,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 15:43:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 15:43:48,518 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 201 [2021-04-28 15:43:48,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:43:48,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 201 [2021-04-28 15:43:48,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:43:48,624 INFO L129 PetriNetUnfolder]: 377/709 cut-off events. [2021-04-28 15:43:48,624 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2021-04-28 15:43:48,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 709 events. 377/709 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3110 event pairs, 66 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 1427. Up to 212 conditions per place. [2021-04-28 15:43:48,628 INFO L132 encePairwiseOnDemand]: 190/201 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2021-04-28 15:43:48,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 70 transitions, 282 flow [2021-04-28 15:43:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 15:43:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 15:43:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2021-04-28 15:43:48,631 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6119402985074627 [2021-04-28 15:43:48,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2021-04-28 15:43:48,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2021-04-28 15:43:48,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:43:48,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2021-04-28 15:43:48,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,636 INFO L185 Difference]: Start difference. First operand has 53 places, 66 transitions, 234 flow. Second operand 3 states and 369 transitions. [2021-04-28 15:43:48,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 70 transitions, 282 flow [2021-04-28 15:43:48,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-28 15:43:48,642 INFO L241 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2021-04-28 15:43:48,642 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2021-04-28 15:43:48,642 INFO L343 CegarLoopForPetriNet]: 94 programPoint places, -47 predicate places. [2021-04-28 15:43:48,642 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:43:48,643 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 0 transitions, 0 flow [2021-04-28 15:43:48,643 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 0 transitions, 0 flow [2021-04-28 15:43:48,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-28 15:43:48,643 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-28 15:43:48,643 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:43:48,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-28 15:43:48,644 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 15:43:48,644 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 15:43:48,644 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:43:48,644 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-28 15:43:48,646 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-28 15:43:48,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:43:48,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 15:43:48,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 03:43:48 BasicIcfg [2021-04-28 15:43:48,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 15:43:48,653 INFO L168 Benchmark]: Toolchain (without parser) took 12348.91 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 277.1 MB in the beginning and 286.2 MB in the end (delta: -9.1 MB). Peak memory consumption was 126.6 MB. Max. memory is 16.0 GB. [2021-04-28 15:43:48,654 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 15:43:48,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.17 ms. Allocated memory is still 302.0 MB. Free memory was 273.9 MB in the beginning and 245.3 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-04-28 15:43:48,655 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.88 ms. Allocated memory is still 302.0 MB. Free memory was 245.3 MB in the beginning and 243.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-28 15:43:48,656 INFO L168 Benchmark]: Boogie Preprocessor took 112.16 ms. Allocated memory is still 302.0 MB. Free memory was 243.5 MB in the beginning and 284.8 MB in the end (delta: -41.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.0 GB. [2021-04-28 15:43:48,657 INFO L168 Benchmark]: RCFGBuilder took 517.44 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 262.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-04-28 15:43:48,657 INFO L168 Benchmark]: TraceAbstraction took 10936.66 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 261.6 MB in the beginning and 286.2 MB in the end (delta: -24.6 MB). Peak memory consumption was 111.7 MB. Max. memory is 16.0 GB. [2021-04-28 15:43:48,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 654.17 ms. Allocated memory is still 302.0 MB. Free memory was 273.9 MB in the beginning and 245.3 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 72.88 ms. Allocated memory is still 302.0 MB. Free memory was 245.3 MB in the beginning and 243.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 112.16 ms. Allocated memory is still 302.0 MB. Free memory was 243.5 MB in the beginning and 284.8 MB in the end (delta: -41.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.0 GB. * RCFGBuilder took 517.44 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 262.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 10936.66 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 261.6 MB in the beginning and 286.2 MB in the end (delta: -24.6 MB). Peak memory consumption was 111.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9388.3ms, 67 PlacesBefore, 94 PlacesAfterwards, 87 TransitionsBefore, 109 TransitionsAfterwards, 2542 CoEnabledTransitionPairs, 8 FixpointIterations, 54 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 6 ChoiceCompositions, 112 TotalNumberOfCompositions, 12091 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4776, positive: 4511, positive conditional: 4511, positive unconditional: 0, negative: 265, negative conditional: 265, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1573, positive: 1537, positive conditional: 0, positive unconditional: 1537, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1573, positive: 1537, positive conditional: 0, positive unconditional: 1537, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1573, positive: 1478, positive conditional: 0, positive unconditional: 1478, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 95, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 304, positive: 163, positive conditional: 0, positive unconditional: 163, negative: 140, negative conditional: 0, negative unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4776, positive: 2974, positive conditional: 2974, positive unconditional: 0, negative: 229, negative conditional: 229, negative unconditional: 0, unknown: 1573, unknown conditional: 1573, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1442, Positive cache size: 1409, Positive conditional cache size: 1409, Positive unconditional cache size: 0, Negative cache size: 33, Negative conditional cache size: 33, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 107.4ms, 68 PlacesBefore, 45 PlacesAfterwards, 53 TransitionsBefore, 54 TransitionsAfterwards, 1276 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2562 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 655, positive: 556, positive conditional: 556, positive unconditional: 0, negative: 99, negative conditional: 99, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 112, positive: 98, positive conditional: 0, positive unconditional: 98, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 112, positive: 98, positive conditional: 0, positive unconditional: 98, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 112, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 61, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 655, positive: 458, positive conditional: 458, positive unconditional: 0, negative: 85, negative conditional: 85, negative unconditional: 0, unknown: 112, unknown conditional: 112, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1554, Positive cache size: 1507, Positive conditional cache size: 1507, Positive unconditional cache size: 0, Negative cache size: 47, Negative conditional cache size: 47, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.4ms, 49 PlacesBefore, 49 PlacesAfterwards, 61 TransitionsBefore, 61 TransitionsAfterwards, 1556 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 1232 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 206, positive: 164, positive conditional: 164, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 3, positive unconditional: 15, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 3, positive unconditional: 15, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 206, positive: 146, positive conditional: 146, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1572, Positive cache size: 1525, Positive conditional cache size: 1525, Positive unconditional cache size: 0, Negative cache size: 47, Negative conditional cache size: 47, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.0ms, 50 PlacesBefore, 50 PlacesAfterwards, 61 TransitionsBefore, 61 TransitionsAfterwards, 1484 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 1232 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 219, positive: 177, positive conditional: 177, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 219, positive: 157, positive conditional: 157, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 20, unknown conditional: 20, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1592, Positive cache size: 1545, Positive conditional cache size: 1545, Positive unconditional cache size: 0, Negative cache size: 47, Negative conditional cache size: 47, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 87.0ms, 53 PlacesBefore, 53 PlacesAfterwards, 66 TransitionsBefore, 66 TransitionsAfterwards, 1190 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 465 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 33, positive conditional: 33, positive unconditional: 0, negative: 17, negative conditional: 17, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 16, positive conditional: 4, positive unconditional: 12, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 16, positive conditional: 4, positive unconditional: 12, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 16, positive: 11, positive conditional: 6, positive unconditional: 5, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 50, positive: 17, positive conditional: 17, positive unconditional: 0, negative: 15, negative conditional: 15, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1610, Positive cache size: 1561, Positive conditional cache size: 1561, Positive unconditional cache size: 0, Negative cache size: 49, Negative conditional cache size: 49, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3ms, 47 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1610, Positive cache size: 1561, Positive conditional cache size: 1561, Positive unconditional cache size: 0, Negative cache size: 49, Negative conditional cache size: 49, Negative unconditional cache size: 0 - PositiveResult [Line: 698]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 716]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 10813.4ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 500.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9506.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 60 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 61 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.1ms SsaConstructionTime, 86.6ms SatisfiabilityAnalysisTime, 217.1ms InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 86 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...