/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 18:47:02,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 18:47:02,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 18:47:02,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 18:47:02,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 18:47:02,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 18:47:02,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 18:47:02,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 18:47:02,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 18:47:02,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 18:47:02,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 18:47:02,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 18:47:02,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 18:47:02,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 18:47:02,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 18:47:02,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 18:47:02,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 18:47:02,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 18:47:02,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 18:47:02,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 18:47:02,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 18:47:02,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 18:47:02,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 18:47:02,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 18:47:02,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 18:47:02,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 18:47:02,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 18:47:02,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 18:47:02,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 18:47:02,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 18:47:02,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 18:47:02,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 18:47:02,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 18:47:02,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 18:47:02,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 18:47:02,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 18:47:02,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 18:47:02,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 18:47:02,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 18:47:02,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 18:47:02,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 18:47:02,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 18:47:02,748 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 18:47:02,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 18:47:02,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 18:47:02,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 18:47:02,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 18:47:02,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 18:47:02,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 18:47:02,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 18:47:02,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 18:47:02,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 18:47:02,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 18:47:02,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 18:47:02,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 18:47:02,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 18:47:02,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 18:47:02,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 18:47:02,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 18:47:02,752 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 18:47:02,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 18:47:02,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 18:47:02,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 18:47:02,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 18:47:02,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 18:47:02,982 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 18:47:02,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2021-03-11 18:47:03,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8e8bcbe/2b80f0a530554984b90cb85360b3283f/FLAGa9627b939 [2021-03-11 18:47:03,461 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 18:47:03,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2021-03-11 18:47:03,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8e8bcbe/2b80f0a530554984b90cb85360b3283f/FLAGa9627b939 [2021-03-11 18:47:03,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8e8bcbe/2b80f0a530554984b90cb85360b3283f [2021-03-11 18:47:03,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 18:47:03,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 18:47:03,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 18:47:03,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 18:47:03,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 18:47:03,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e6db088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03, skipping insertion in model container [2021-03-11 18:47:03,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 18:47:03,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 18:47:03,785 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/lazy01.i[31042,31055] [2021-03-11 18:47:03,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 18:47:03,798 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 18:47:03,833 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/lazy01.i[31042,31055] [2021-03-11 18:47:03,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 18:47:03,889 INFO L208 MainTranslator]: Completed translation [2021-03-11 18:47:03,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03 WrapperNode [2021-03-11 18:47:03,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 18:47:03,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 18:47:03,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 18:47:03,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 18:47:03,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 18:47:03,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 18:47:03,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 18:47:03,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 18:47:03,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (1/1) ... [2021-03-11 18:47:03,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 18:47:03,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 18:47:03,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 18:47:03,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 18:47:03,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (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 [2021-03-11 18:47:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 18:47:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 18:47:04,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 18:47:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 18:47:04,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 18:47:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 18:47:04,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 18:47:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 18:47:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-11 18:47:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 18:47:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 18:47:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 18:47:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 18:47:04,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 18:47:04,027 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 18:47:04,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 18:47:04,243 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 18:47:04,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:47:04 BoogieIcfgContainer [2021-03-11 18:47:04,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 18:47:04,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 18:47:04,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 18:47:04,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 18:47:04,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 06:47:03" (1/3) ... [2021-03-11 18:47:04,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5eac79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:47:04, skipping insertion in model container [2021-03-11 18:47:04,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:47:03" (2/3) ... [2021-03-11 18:47:04,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5eac79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:47:04, skipping insertion in model container [2021-03-11 18:47:04,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:47:04" (3/3) ... [2021-03-11 18:47:04,249 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-03-11 18:47:04,252 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 18:47:04,255 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 18:47:04,255 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 18:47:04,277 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,277 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,277 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,278 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,278 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,278 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,278 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,278 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,278 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,280 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,280 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,280 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,280 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,280 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,281 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,281 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,281 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,281 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,281 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,281 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,282 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,282 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,282 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,282 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,282 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,282 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,282 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,284 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,284 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,284 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,284 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,284 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,284 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,284 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,284 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,286 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,286 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,286 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,286 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,288 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,288 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,291 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,291 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,293 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,293 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,293 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,293 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,293 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:47:04,302 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-03-11 18:47:04,314 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 18:47:04,326 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 18:47:04,327 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 18:47:04,327 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 18:47:04,327 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 18:47:04,327 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 18:47:04,327 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 18:47:04,327 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 18:47:04,327 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 18:47:04,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 208 flow [2021-03-11 18:47:04,361 INFO L129 PetriNetUnfolder]: 6/91 cut-off events. [2021-03-11 18:47:04,362 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-11 18:47:04,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 91 events. 6/91 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2021-03-11 18:47:04,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 208 flow [2021-03-11 18:47:04,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 151 flow [2021-03-11 18:47:04,370 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 18:47:04,376 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-11 18:47:04,377 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-11 18:47:04,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 65 transitions, 151 flow [2021-03-11 18:47:04,389 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-03-11 18:47:04,389 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 18:47:04,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 67 events. 2/67 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2021-03-11 18:47:04,391 INFO L116 LiptonReduction]: Number of co-enabled transitions 1008 [2021-03-11 18:47:06,229 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-03-11 18:47:06,366 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-11 18:47:06,651 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-03-11 18:47:06,771 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-11 18:47:06,776 INFO L131 LiptonReduction]: Checked pairs total: 3771 [2021-03-11 18:47:06,776 INFO L133 LiptonReduction]: Total number of compositions: 44 [2021-03-11 18:47:06,777 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2409 [2021-03-11 18:47:06,783 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-03-11 18:47:06,784 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 18:47:06,784 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:47:06,784 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 18:47:06,784 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:47:06,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:47:06,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1154645693, now seen corresponding path program 1 times [2021-03-11 18:47:06,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:47:06,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127453133] [2021-03-11 18:47:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:47:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:47:06,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:47:06,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:47:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 18:47:06,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127453133] [2021-03-11 18:47:06,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:47:06,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 18:47:06,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070505815] [2021-03-11 18:47:06,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 18:47:06,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:47:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 18:47:06,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 18:47:06,917 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2021-03-11 18:47:06,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:06,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 18:47:06,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2021-03-11 18:47:06,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 18:47:06,954 INFO L129 PetriNetUnfolder]: 15/77 cut-off events. [2021-03-11 18:47:06,954 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-11 18:47:06,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 77 events. 15/77 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 278 event pairs, 3 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 110. Up to 24 conditions per place. [2021-03-11 18:47:06,956 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 6 selfloop transitions, 3 changer transitions 2/30 dead transitions. [2021-03-11 18:47:06,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 101 flow [2021-03-11 18:47:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 18:47:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 18:47:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2021-03-11 18:47:06,964 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8372703412073491 [2021-03-11 18:47:06,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2021-03-11 18:47:06,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2021-03-11 18:47:06,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 18:47:06,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2021-03-11 18:47:06,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:06,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:06,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:06,974 INFO L185 Difference]: Start difference. First operand has 34 places, 27 transitions, 75 flow. Second operand 3 states and 319 transitions. [2021-03-11 18:47:06,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 101 flow [2021-03-11 18:47:06,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 88 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-11 18:47:06,977 INFO L241 Difference]: Finished difference. Result has 32 places, 27 transitions, 77 flow [2021-03-11 18:47:06,978 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2021-03-11 18:47:06,978 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2021-03-11 18:47:06,978 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 77 flow [2021-03-11 18:47:06,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:06,979 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:47:06,979 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 18:47:06,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 18:47:06,979 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:47:06,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:47:06,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1512949203, now seen corresponding path program 1 times [2021-03-11 18:47:06,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:47:06,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619024714] [2021-03-11 18:47:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:47:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:47:07,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:47:07,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 18:47:07,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:47:07,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:47:07,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:47:07,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 18:47:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 18:47:07,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619024714] [2021-03-11 18:47:07,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:47:07,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 18:47:07,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88471859] [2021-03-11 18:47:07,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 18:47:07,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:47:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 18:47:07,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 18:47:07,018 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 127 [2021-03-11 18:47:07,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 18:47:07,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 127 [2021-03-11 18:47:07,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 18:47:07,038 INFO L129 PetriNetUnfolder]: 2/45 cut-off events. [2021-03-11 18:47:07,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 18:47:07,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 45 events. 2/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 123 event pairs, 0 based on Foata normal form. 9/53 useless extension candidates. Maximal degree in co-relation 60. Up to 8 conditions per place. [2021-03-11 18:47:07,038 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 1 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2021-03-11 18:47:07,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 89 flow [2021-03-11 18:47:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 18:47:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 18:47:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2021-03-11 18:47:07,043 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7086614173228346 [2021-03-11 18:47:07,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2021-03-11 18:47:07,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2021-03-11 18:47:07,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 18:47:07,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2021-03-11 18:47:07,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,045 INFO L185 Difference]: Start difference. First operand has 32 places, 27 transitions, 77 flow. Second operand 3 states and 270 transitions. [2021-03-11 18:47:07,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 89 flow [2021-03-11 18:47:07,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 18:47:07,046 INFO L241 Difference]: Finished difference. Result has 32 places, 27 transitions, 84 flow [2021-03-11 18:47:07,046 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2021-03-11 18:47:07,046 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2021-03-11 18:47:07,046 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 84 flow [2021-03-11 18:47:07,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,047 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:47:07,047 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 18:47:07,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 18:47:07,047 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:47:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:47:07,047 INFO L82 PathProgramCache]: Analyzing trace with hash -332756732, now seen corresponding path program 1 times [2021-03-11 18:47:07,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:47:07,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85352316] [2021-03-11 18:47:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:47:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:47:07,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:47:07,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:47:07,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:47:07,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:47:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 18:47:07,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85352316] [2021-03-11 18:47:07,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:47:07,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 18:47:07,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508455622] [2021-03-11 18:47:07,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 18:47:07,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:47:07,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 18:47:07,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 18:47:07,086 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2021-03-11 18:47:07,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 18:47:07,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2021-03-11 18:47:07,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 18:47:07,107 INFO L129 PetriNetUnfolder]: 2/44 cut-off events. [2021-03-11 18:47:07,107 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-11 18:47:07,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 44 events. 2/44 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 114 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 68. Up to 8 conditions per place. [2021-03-11 18:47:07,108 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 4 selfloop transitions, 5 changer transitions 2/30 dead transitions. [2021-03-11 18:47:07,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 112 flow [2021-03-11 18:47:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 18:47:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 18:47:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 420 transitions. [2021-03-11 18:47:07,111 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8267716535433071 [2021-03-11 18:47:07,111 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 420 transitions. [2021-03-11 18:47:07,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 420 transitions. [2021-03-11 18:47:07,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 18:47:07,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 420 transitions. [2021-03-11 18:47:07,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,115 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,115 INFO L185 Difference]: Start difference. First operand has 32 places, 27 transitions, 84 flow. Second operand 4 states and 420 transitions. [2021-03-11 18:47:07,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 112 flow [2021-03-11 18:47:07,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 18:47:07,116 INFO L241 Difference]: Finished difference. Result has 35 places, 27 transitions, 94 flow [2021-03-11 18:47:07,117 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2021-03-11 18:47:07,117 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2021-03-11 18:47:07,117 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 94 flow [2021-03-11 18:47:07,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,118 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:47:07,118 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 18:47:07,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 18:47:07,118 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:47:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:47:07,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1985572861, now seen corresponding path program 1 times [2021-03-11 18:47:07,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:47:07,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810007196] [2021-03-11 18:47:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:47:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:47:07,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:47:07,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:47:07,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:47:07,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:47:07,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:47:07,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:47:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 18:47:07,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810007196] [2021-03-11 18:47:07,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:47:07,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 18:47:07,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995770802] [2021-03-11 18:47:07,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 18:47:07,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:47:07,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 18:47:07,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 18:47:07,185 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 127 [2021-03-11 18:47:07,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 18:47:07,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 127 [2021-03-11 18:47:07,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 18:47:07,209 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2021-03-11 18:47:07,210 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-03-11 18:47:07,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 41 events. 2/41 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 60. Up to 7 conditions per place. [2021-03-11 18:47:07,211 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 5 changer transitions 1/29 dead transitions. [2021-03-11 18:47:07,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 123 flow [2021-03-11 18:47:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 18:47:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 18:47:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2021-03-11 18:47:07,212 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8062992125984252 [2021-03-11 18:47:07,212 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2021-03-11 18:47:07,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2021-03-11 18:47:07,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 18:47:07,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2021-03-11 18:47:07,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,215 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,215 INFO L185 Difference]: Start difference. First operand has 35 places, 27 transitions, 94 flow. Second operand 5 states and 512 transitions. [2021-03-11 18:47:07,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 123 flow [2021-03-11 18:47:07,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 118 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 18:47:07,217 INFO L241 Difference]: Finished difference. Result has 40 places, 28 transitions, 110 flow [2021-03-11 18:47:07,217 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2021-03-11 18:47:07,217 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2021-03-11 18:47:07,217 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 110 flow [2021-03-11 18:47:07,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:47:07,217 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:47:07,217 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 18:47:07,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 18:47:07,218 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:47:07,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:47:07,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1596393386, now seen corresponding path program 1 times [2021-03-11 18:47:07,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:47:07,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884628696] [2021-03-11 18:47:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:47:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 18:47:07,253 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 18:47:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 18:47:07,265 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 18:47:07,287 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 18:47:07,288 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 18:47:07,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 18:47:07,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 06:47:07 BasicIcfg [2021-03-11 18:47:07,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 18:47:07,314 INFO L168 Benchmark]: Toolchain (without parser) took 3829.51 ms. Allocated memory was 337.6 MB in the beginning and 448.8 MB in the end (delta: 111.1 MB). Free memory was 301.3 MB in the beginning and 200.7 MB in the end (delta: 100.6 MB). Peak memory consumption was 212.2 MB. Max. memory is 16.0 GB. [2021-03-11 18:47:07,314 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 337.6 MB. Free memory was 319.3 MB in the beginning and 319.3 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 18:47:07,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.01 ms. Allocated memory is still 337.6 MB. Free memory was 300.7 MB in the beginning and 301.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-03-11 18:47:07,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.83 ms. Allocated memory is still 337.6 MB. Free memory was 301.8 MB in the beginning and 299.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 18:47:07,315 INFO L168 Benchmark]: Boogie Preprocessor took 29.19 ms. Allocated memory is still 337.6 MB. Free memory was 299.7 MB in the beginning and 298.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 18:47:07,316 INFO L168 Benchmark]: RCFGBuilder took 280.94 ms. Allocated memory is still 337.6 MB. Free memory was 298.7 MB in the beginning and 272.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 18:47:07,316 INFO L168 Benchmark]: TraceAbstraction took 3068.19 ms. Allocated memory was 337.6 MB in the beginning and 448.8 MB in the end (delta: 111.1 MB). Free memory was 272.5 MB in the beginning and 200.7 MB in the end (delta: 71.8 MB). Peak memory consumption was 186.1 MB. Max. memory is 16.0 GB. [2021-03-11 18:47:07,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 337.6 MB. Free memory was 319.3 MB in the beginning and 319.3 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 397.01 ms. Allocated memory is still 337.6 MB. Free memory was 300.7 MB in the beginning and 301.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.83 ms. Allocated memory is still 337.6 MB. Free memory was 301.8 MB in the beginning and 299.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.19 ms. Allocated memory is still 337.6 MB. Free memory was 299.7 MB in the beginning and 298.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 280.94 ms. Allocated memory is still 337.6 MB. Free memory was 298.7 MB in the beginning and 272.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3068.19 ms. Allocated memory was 337.6 MB in the beginning and 448.8 MB in the end (delta: 111.1 MB). Free memory was 272.5 MB in the beginning and 200.7 MB in the end (delta: 71.8 MB). Peak memory consumption was 186.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2398.9ms, 72 PlacesBefore, 34 PlacesAfterwards, 65 TransitionsBefore, 27 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 3771 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2254, positive: 2130, positive conditional: 0, positive unconditional: 2130, negative: 124, negative conditional: 0, negative unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 775, positive: 745, positive conditional: 0, positive unconditional: 745, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 775, positive: 723, positive conditional: 0, positive unconditional: 723, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 130, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 93, negative conditional: 0, negative unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2254, positive: 1385, positive conditional: 0, positive unconditional: 1385, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 775, unknown conditional: 0, unknown unconditional: 775] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 155, Positive conditional cache size: 0, Positive unconditional cache size: 155, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={6:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={6:0}] [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={6:0}] [L716] 2 return 0; [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={6:0}] [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2964.3ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 159.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2453.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 9 SDslu, 2 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=4, InterpolantAutomatonStates: 15, 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: 10.2ms SsaConstructionTime, 68.4ms SatisfiabilityAnalysisTime, 129.8ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...