/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 06:57:40,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 06:57:40,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 06:57:40,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 06:57:40,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 06:57:40,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 06:57:40,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 06:57:40,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 06:57:40,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 06:57:40,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 06:57:40,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 06:57:40,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 06:57:40,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 06:57:40,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 06:57:40,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 06:57:40,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 06:57:40,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 06:57:40,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 06:57:40,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 06:57:40,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 06:57:40,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 06:57:40,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 06:57:40,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 06:57:40,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 06:57:40,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 06:57:40,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 06:57:40,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 06:57:40,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 06:57:40,954 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-NoLbe.epf [2021-06-13 06:57:40,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 06:57:40,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 06:57:40,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 06:57:40,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 06:57:40,969 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 06:57:40,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 06:57:40,969 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 06:57:40,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 06:57:40,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 06:57:40,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 06:57:40,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 06:57:40,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 06:57:40,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 06:57:40,970 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 06:57:40,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 06:57:40,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 06:57:40,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 06:57:40,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 06:57:40,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 06:57:40,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 06:57:40,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 06:57:40,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 06:57:40,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 06:57:40,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 06:57:40,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 06:57:40,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 06:57:40,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 06:57:40,972 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 06:57:40,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 06:57:40,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 06:57:41,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 06:57:41,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 06:57:41,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 06:57:41,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 06:57:41,208 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 06:57:41,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2021-06-13 06:57:41,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d6baa06/721914ca85d34004a4e3771a4da7190c/FLAG3c2ee9e5f [2021-06-13 06:57:41,631 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 06:57:41,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2021-06-13 06:57:41,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d6baa06/721914ca85d34004a4e3771a4da7190c/FLAG3c2ee9e5f [2021-06-13 06:57:42,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d6baa06/721914ca85d34004a4e3771a4da7190c [2021-06-13 06:57:42,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 06:57:42,011 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 06:57:42,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 06:57:42,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 06:57:42,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 06:57:42,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e61da99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42, skipping insertion in model container [2021-06-13 06:57:42,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 06:57:42,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 06:57:42,151 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-13 06:57:42,228 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i[31246,31259] [2021-06-13 06:57:42,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 06:57:42,291 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 06:57:42,311 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-13 06:57:42,328 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i[31246,31259] [2021-06-13 06:57:42,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 06:57:42,390 INFO L208 MainTranslator]: Completed translation [2021-06-13 06:57:42,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42 WrapperNode [2021-06-13 06:57:42,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 06:57:42,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 06:57:42,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 06:57:42,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 06:57:42,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 06:57:42,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 06:57:42,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 06:57:42,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 06:57:42,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (1/1) ... [2021-06-13 06:57:42,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 06:57:42,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 06:57:42,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 06:57:42,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 06:57:42,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (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 [2021-06-13 06:57:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-13 06:57:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 06:57:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 06:57:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2021-06-13 06:57:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2021-06-13 06:57:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 06:57:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 06:57:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 06:57:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 06:57:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 06:57:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 06:57:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2021-06-13 06:57:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2021-06-13 06:57:42,543 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 06:57:42,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 06:57:42,859 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-13 06:57:42,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 06:57:42 BoogieIcfgContainer [2021-06-13 06:57:42,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 06:57:42,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 06:57:42,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 06:57:42,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 06:57:42,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 06:57:42" (1/3) ... [2021-06-13 06:57:42,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cecfa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 06:57:42, skipping insertion in model container [2021-06-13 06:57:42,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:57:42" (2/3) ... [2021-06-13 06:57:42,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cecfa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 06:57:42, skipping insertion in model container [2021-06-13 06:57:42,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 06:57:42" (3/3) ... [2021-06-13 06:57:42,865 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2021-06-13 06:57:42,868 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 06:57:42,868 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 06:57:42,869 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 06:57:42,904 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,905 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,905 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,905 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,905 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,905 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,905 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,905 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,906 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,906 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,906 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,907 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,908 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,909 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,909 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,910 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,910 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,910 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,911 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,911 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,911 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,912 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,913 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,913 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,913 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,913 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,913 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,913 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,913 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,914 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,914 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,914 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,914 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,914 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,914 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,914 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,914 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,914 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,915 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,915 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,915 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,915 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,915 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,915 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,916 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,916 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,916 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,916 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,916 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,916 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,916 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,916 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,916 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,917 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,917 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,917 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,917 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,917 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,917 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,917 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,918 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,919 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,919 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,919 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,919 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,920 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,920 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,920 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,920 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,920 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,922 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,922 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,922 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,922 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,922 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,922 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,923 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,923 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,924 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,924 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,924 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,924 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,925 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,925 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,925 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,925 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,925 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,926 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,926 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,926 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,926 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:57:42,943 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-13 06:57:42,957 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:57:42,969 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:57:42,969 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:57:42,969 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:57:42,969 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:57:42,969 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:57:42,969 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:57:42,970 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:57:42,970 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == reader======== [2021-06-13 06:57:42,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 120 transitions, 308 flow [2021-06-13 06:57:43,012 INFO L129 PetriNetUnfolder]: 19/154 cut-off events. [2021-06-13 06:57:43,012 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-13 06:57:43,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 154 events. 19/154 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 300 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 105. Up to 12 conditions per place. [2021-06-13 06:57:43,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 120 transitions, 308 flow [2021-06-13 06:57:43,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 06:57:43,020 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 06:57:43,020 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:57:43,021 INFO L301 ceAbstractionStarter]: Result for error location reader was SAFE (1/4) [2021-06-13 06:57:43,022 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:57:43,025 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:57:43,025 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:57:43,025 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:57:43,025 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:57:43,026 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:57:43,026 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:57:43,026 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:57:43,026 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == readerThread1of1ForFork0======== [2021-06-13 06:57:43,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 120 transitions, 308 flow [2021-06-13 06:57:43,054 INFO L129 PetriNetUnfolder]: 19/154 cut-off events. [2021-06-13 06:57:43,054 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-13 06:57:43,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 154 events. 19/154 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 300 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 105. Up to 12 conditions per place. [2021-06-13 06:57:43,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 120 transitions, 308 flow [2021-06-13 06:57:43,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 100 transitions, 248 flow [2021-06-13 06:57:43,064 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2021-06-13 06:57:43,064 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:57:43,064 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:43,064 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:43,064 INFO L430 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:43,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:43,068 INFO L82 PathProgramCache]: Analyzing trace with hash -576272667, now seen corresponding path program 1 times [2021-06-13 06:57:43,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:43,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418252687] [2021-06-13 06:57:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:43,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:43,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:43,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:43,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:43,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:43,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:43,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:43,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418252687] [2021-06-13 06:57:43,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418252687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:43,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:43,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 06:57:43,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121685687] [2021-06-13 06:57:43,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 06:57:43,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:43,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 06:57:43,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 06:57:43,251 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2021-06-13 06:57:43,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:43,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:43,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2021-06-13 06:57:43,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:43,671 INFO L129 PetriNetUnfolder]: 713/2481 cut-off events. [2021-06-13 06:57:43,671 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-06-13 06:57:43,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3837 conditions, 2481 events. 713/2481 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23108 event pairs, 137 based on Foata normal form. 108/2446 useless extension candidates. Maximal degree in co-relation 3128. Up to 388 conditions per place. [2021-06-13 06:57:43,696 INFO L132 encePairwiseOnDemand]: 109/120 looper letters, 45 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2021-06-13 06:57:43,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 151 transitions, 488 flow [2021-06-13 06:57:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 06:57:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 06:57:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1103 transitions. [2021-06-13 06:57:43,713 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9191666666666667 [2021-06-13 06:57:43,713 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1103 transitions. [2021-06-13 06:57:43,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1103 transitions. [2021-06-13 06:57:43,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:43,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1103 transitions. [2021-06-13 06:57:43,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 110.3) internal successors, (1103), 10 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:43,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:43,727 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:43,729 INFO L185 Difference]: Start difference. First operand has 102 places, 100 transitions, 248 flow. Second operand 10 states and 1103 transitions. [2021-06-13 06:57:43,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 151 transitions, 488 flow [2021-06-13 06:57:43,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 151 transitions, 456 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-06-13 06:57:43,741 INFO L241 Difference]: Finished difference. Result has 111 places, 123 transitions, 387 flow [2021-06-13 06:57:43,743 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=387, PETRI_PLACES=111, PETRI_TRANSITIONS=123} [2021-06-13 06:57:43,743 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2021-06-13 06:57:43,743 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 123 transitions, 387 flow [2021-06-13 06:57:43,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:43,746 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:43,747 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:43,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 06:57:43,747 INFO L430 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:43,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:43,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1367269262, now seen corresponding path program 1 times [2021-06-13 06:57:43,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:43,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477094090] [2021-06-13 06:57:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:43,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:43,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:43,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:43,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:43,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:43,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:43,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477094090] [2021-06-13 06:57:43,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477094090] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:43,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:43,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:57:43,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699960494] [2021-06-13 06:57:43,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:57:43,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:43,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:57:43,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:57:43,864 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 120 [2021-06-13 06:57:43,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 123 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:43,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:43,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 120 [2021-06-13 06:57:43,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:44,215 INFO L129 PetriNetUnfolder]: 743/3613 cut-off events. [2021-06-13 06:57:44,216 INFO L130 PetriNetUnfolder]: For 594/870 co-relation queries the response was YES. [2021-06-13 06:57:44,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5151 conditions, 3613 events. 743/3613 cut-off events. For 594/870 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 40596 event pairs, 48 based on Foata normal form. 18/3395 useless extension candidates. Maximal degree in co-relation 4306. Up to 444 conditions per place. [2021-06-13 06:57:44,243 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 8 selfloop transitions, 9 changer transitions 0/133 dead transitions. [2021-06-13 06:57:44,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 133 transitions, 441 flow [2021-06-13 06:57:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 06:57:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-13 06:57:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2021-06-13 06:57:44,245 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9645833333333333 [2021-06-13 06:57:44,245 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2021-06-13 06:57:44,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2021-06-13 06:57:44,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:44,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2021-06-13 06:57:44,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 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) [2021-06-13 06:57:44,247 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 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) [2021-06-13 06:57:44,247 INFO L185 Difference]: Start difference. First operand has 111 places, 123 transitions, 387 flow. Second operand 4 states and 463 transitions. [2021-06-13 06:57:44,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 133 transitions, 441 flow [2021-06-13 06:57:44,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 133 transitions, 441 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:57:44,259 INFO L241 Difference]: Finished difference. Result has 117 places, 131 transitions, 455 flow [2021-06-13 06:57:44,259 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=455, PETRI_PLACES=117, PETRI_TRANSITIONS=131} [2021-06-13 06:57:44,260 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 15 predicate places. [2021-06-13 06:57:44,260 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 131 transitions, 455 flow [2021-06-13 06:57:44,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,260 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:44,260 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:44,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 06:57:44,261 INFO L430 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:44,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:44,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1952761108, now seen corresponding path program 2 times [2021-06-13 06:57:44,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:44,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100298413] [2021-06-13 06:57:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:44,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:44,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:44,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:44,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:44,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:44,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:44,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:44,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100298413] [2021-06-13 06:57:44,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100298413] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:44,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:44,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 06:57:44,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594669544] [2021-06-13 06:57:44,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 06:57:44,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:44,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 06:57:44,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 06:57:44,323 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 120 [2021-06-13 06:57:44,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 131 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:44,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 120 [2021-06-13 06:57:44,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:44,496 INFO L129 PetriNetUnfolder]: 412/2064 cut-off events. [2021-06-13 06:57:44,496 INFO L130 PetriNetUnfolder]: For 582/768 co-relation queries the response was YES. [2021-06-13 06:57:44,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3025 conditions, 2064 events. 412/2064 cut-off events. For 582/768 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 20556 event pairs, 9 based on Foata normal form. 55/2032 useless extension candidates. Maximal degree in co-relation 2641. Up to 300 conditions per place. [2021-06-13 06:57:44,511 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 5 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2021-06-13 06:57:44,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 131 transitions, 477 flow [2021-06-13 06:57:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 06:57:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 06:57:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2021-06-13 06:57:44,512 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2021-06-13 06:57:44,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2021-06-13 06:57:44,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2021-06-13 06:57:44,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:44,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2021-06-13 06:57:44,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,514 INFO L185 Difference]: Start difference. First operand has 117 places, 131 transitions, 455 flow. Second operand 3 states and 344 transitions. [2021-06-13 06:57:44,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 131 transitions, 477 flow [2021-06-13 06:57:44,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 131 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:57:44,518 INFO L241 Difference]: Finished difference. Result has 120 places, 131 transitions, 477 flow [2021-06-13 06:57:44,518 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=120, PETRI_TRANSITIONS=131} [2021-06-13 06:57:44,519 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 18 predicate places. [2021-06-13 06:57:44,519 INFO L482 AbstractCegarLoop]: Abstraction has has 120 places, 131 transitions, 477 flow [2021-06-13 06:57:44,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,519 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:44,519 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:44,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 06:57:44,519 INFO L430 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:44,520 INFO L82 PathProgramCache]: Analyzing trace with hash 49150022, now seen corresponding path program 1 times [2021-06-13 06:57:44,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:44,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781532010] [2021-06-13 06:57:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:44,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:44,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:44,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:44,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:44,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:44,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:44,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:44,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:44,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:44,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:44,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:44,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:44,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:44,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781532010] [2021-06-13 06:57:44,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781532010] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:44,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:44,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 06:57:44,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493568972] [2021-06-13 06:57:44,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 06:57:44,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:44,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 06:57:44,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 06:57:44,558 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 120 [2021-06-13 06:57:44,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 131 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:44,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 120 [2021-06-13 06:57:44,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:44,909 INFO L129 PetriNetUnfolder]: 798/3401 cut-off events. [2021-06-13 06:57:44,909 INFO L130 PetriNetUnfolder]: For 1757/1881 co-relation queries the response was YES. [2021-06-13 06:57:44,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5967 conditions, 3401 events. 798/3401 cut-off events. For 1757/1881 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35843 event pairs, 51 based on Foata normal form. 52/3305 useless extension candidates. Maximal degree in co-relation 4936. Up to 448 conditions per place. [2021-06-13 06:57:44,934 INFO L132 encePairwiseOnDemand]: 111/120 looper letters, 53 selfloop transitions, 38 changer transitions 10/188 dead transitions. [2021-06-13 06:57:44,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 940 flow [2021-06-13 06:57:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 06:57:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 06:57:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 972 transitions. [2021-06-13 06:57:44,936 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-06-13 06:57:44,936 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 972 transitions. [2021-06-13 06:57:44,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 972 transitions. [2021-06-13 06:57:44,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:44,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 972 transitions. [2021-06-13 06:57:44,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,940 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,940 INFO L185 Difference]: Start difference. First operand has 120 places, 131 transitions, 477 flow. Second operand 9 states and 972 transitions. [2021-06-13 06:57:44,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 940 flow [2021-06-13 06:57:44,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 188 transitions, 928 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 06:57:44,949 INFO L241 Difference]: Finished difference. Result has 134 places, 155 transitions, 797 flow [2021-06-13 06:57:44,949 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=797, PETRI_PLACES=134, PETRI_TRANSITIONS=155} [2021-06-13 06:57:44,949 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 32 predicate places. [2021-06-13 06:57:44,949 INFO L482 AbstractCegarLoop]: Abstraction has has 134 places, 155 transitions, 797 flow [2021-06-13 06:57:44,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:44,949 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:44,949 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:44,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 06:57:44,950 INFO L430 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:44,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:44,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1759662591, now seen corresponding path program 1 times [2021-06-13 06:57:44,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:44,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245717541] [2021-06-13 06:57:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:45,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:45,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:45,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:45,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245717541] [2021-06-13 06:57:45,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245717541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:45,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:45,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 06:57:45,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030210451] [2021-06-13 06:57:45,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 06:57:45,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:45,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 06:57:45,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-13 06:57:45,018 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 120 [2021-06-13 06:57:45,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 155 transitions, 797 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:45,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 120 [2021-06-13 06:57:45,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:45,207 INFO L129 PetriNetUnfolder]: 376/2130 cut-off events. [2021-06-13 06:57:45,207 INFO L130 PetriNetUnfolder]: For 1478/1722 co-relation queries the response was YES. [2021-06-13 06:57:45,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3546 conditions, 2130 events. 376/2130 cut-off events. For 1478/1722 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22198 event pairs, 6 based on Foata normal form. 62/2113 useless extension candidates. Maximal degree in co-relation 3293. Up to 304 conditions per place. [2021-06-13 06:57:45,222 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 4 selfloop transitions, 8 changer transitions 22/151 dead transitions. [2021-06-13 06:57:45,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 151 transitions, 769 flow [2021-06-13 06:57:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:57:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:57:45,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2021-06-13 06:57:45,223 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9566666666666667 [2021-06-13 06:57:45,223 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2021-06-13 06:57:45,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2021-06-13 06:57:45,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:45,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2021-06-13 06:57:45,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,225 INFO L185 Difference]: Start difference. First operand has 134 places, 155 transitions, 797 flow. Second operand 5 states and 574 transitions. [2021-06-13 06:57:45,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 151 transitions, 769 flow [2021-06-13 06:57:45,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 151 transitions, 723 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-13 06:57:45,234 INFO L241 Difference]: Finished difference. Result has 134 places, 129 transitions, 579 flow [2021-06-13 06:57:45,234 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=579, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2021-06-13 06:57:45,234 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 32 predicate places. [2021-06-13 06:57:45,234 INFO L482 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 579 flow [2021-06-13 06:57:45,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,235 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:45,235 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:45,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 06:57:45,236 INFO L430 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:45,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1047877429, now seen corresponding path program 2 times [2021-06-13 06:57:45,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:45,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885117017] [2021-06-13 06:57:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:45,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:45,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:45,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:45,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885117017] [2021-06-13 06:57:45,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885117017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:45,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:45,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 06:57:45,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610416651] [2021-06-13 06:57:45,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 06:57:45,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:45,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 06:57:45,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-13 06:57:45,316 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 120 [2021-06-13 06:57:45,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 579 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:45,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 120 [2021-06-13 06:57:45,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:45,386 INFO L129 PetriNetUnfolder]: 89/606 cut-off events. [2021-06-13 06:57:45,386 INFO L130 PetriNetUnfolder]: For 607/736 co-relation queries the response was YES. [2021-06-13 06:57:45,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 606 events. 89/606 cut-off events. For 607/736 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4204 event pairs, 2 based on Foata normal form. 7/595 useless extension candidates. Maximal degree in co-relation 1101. Up to 78 conditions per place. [2021-06-13 06:57:45,389 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 0 selfloop transitions, 0 changer transitions 108/108 dead transitions. [2021-06-13 06:57:45,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 108 transitions, 435 flow [2021-06-13 06:57:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:57:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:57:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2021-06-13 06:57:45,391 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.945 [2021-06-13 06:57:45,391 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2021-06-13 06:57:45,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2021-06-13 06:57:45,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:45,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2021-06-13 06:57:45,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,393 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,393 INFO L185 Difference]: Start difference. First operand has 134 places, 129 transitions, 579 flow. Second operand 5 states and 567 transitions. [2021-06-13 06:57:45,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 108 transitions, 435 flow [2021-06-13 06:57:45,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 369 flow, removed 11 selfloop flow, removed 13 redundant places. [2021-06-13 06:57:45,396 INFO L241 Difference]: Finished difference. Result has 116 places, 0 transitions, 0 flow [2021-06-13 06:57:45,396 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=116, PETRI_TRANSITIONS=0} [2021-06-13 06:57:45,397 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 14 predicate places. [2021-06-13 06:57:45,397 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 0 transitions, 0 flow [2021-06-13 06:57:45,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 06:57:45,397 INFO L301 ceAbstractionStarter]: Result for error location readerThread1of1ForFork0 was SAFE (2/4) [2021-06-13 06:57:45,398 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:57:45,399 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:57:45,399 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:57:45,399 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:57:45,399 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:57:45,399 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:57:45,399 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:57:45,399 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:57:45,399 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == readerThread1of1ForFork3======== [2021-06-13 06:57:45,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 120 transitions, 308 flow [2021-06-13 06:57:45,417 INFO L129 PetriNetUnfolder]: 19/154 cut-off events. [2021-06-13 06:57:45,417 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-13 06:57:45,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 154 events. 19/154 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 300 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 105. Up to 12 conditions per place. [2021-06-13 06:57:45,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 120 transitions, 308 flow [2021-06-13 06:57:45,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 100 transitions, 248 flow [2021-06-13 06:57:45,425 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-06-13 06:57:45,425 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 06:57:45,425 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:45,426 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:45,426 INFO L430 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:45,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:45,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1856661830, now seen corresponding path program 1 times [2021-06-13 06:57:45,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:45,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690701347] [2021-06-13 06:57:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:45,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:45,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:45,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:45,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690701347] [2021-06-13 06:57:45,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690701347] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:45,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:45,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 06:57:45,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769254422] [2021-06-13 06:57:45,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 06:57:45,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:45,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 06:57:45,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 06:57:45,466 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2021-06-13 06:57:45,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:45,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2021-06-13 06:57:45,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:45,764 INFO L129 PetriNetUnfolder]: 736/2430 cut-off events. [2021-06-13 06:57:45,764 INFO L130 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2021-06-13 06:57:45,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3848 conditions, 2430 events. 736/2430 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 21568 event pairs, 198 based on Foata normal form. 112/2434 useless extension candidates. Maximal degree in co-relation 3227. Up to 441 conditions per place. [2021-06-13 06:57:45,781 INFO L132 encePairwiseOnDemand]: 109/120 looper letters, 45 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2021-06-13 06:57:45,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 151 transitions, 488 flow [2021-06-13 06:57:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 06:57:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 06:57:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1103 transitions. [2021-06-13 06:57:45,783 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9191666666666667 [2021-06-13 06:57:45,783 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1103 transitions. [2021-06-13 06:57:45,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1103 transitions. [2021-06-13 06:57:45,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:45,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1103 transitions. [2021-06-13 06:57:45,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 110.3) internal successors, (1103), 10 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,787 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,787 INFO L185 Difference]: Start difference. First operand has 102 places, 100 transitions, 248 flow. Second operand 10 states and 1103 transitions. [2021-06-13 06:57:45,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 151 transitions, 488 flow [2021-06-13 06:57:45,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 151 transitions, 456 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-06-13 06:57:45,792 INFO L241 Difference]: Finished difference. Result has 111 places, 123 transitions, 387 flow [2021-06-13 06:57:45,793 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=387, PETRI_PLACES=111, PETRI_TRANSITIONS=123} [2021-06-13 06:57:45,793 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2021-06-13 06:57:45,793 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 123 transitions, 387 flow [2021-06-13 06:57:45,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,793 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:45,793 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:45,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 06:57:45,793 INFO L430 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:45,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2040726093, now seen corresponding path program 1 times [2021-06-13 06:57:45,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:45,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066654371] [2021-06-13 06:57:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:45,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:45,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:45,854 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-13 06:57:45,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 06:57:45,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:45,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:45,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:45,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066654371] [2021-06-13 06:57:45,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066654371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:45,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:45,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:57:45,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958161778] [2021-06-13 06:57:45,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:57:45,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:45,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:57:45,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:57:45,862 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 120 [2021-06-13 06:57:45,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 123 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:45,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:45,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 120 [2021-06-13 06:57:45,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:46,284 INFO L129 PetriNetUnfolder]: 928/4722 cut-off events. [2021-06-13 06:57:46,284 INFO L130 PetriNetUnfolder]: For 358/365 co-relation queries the response was YES. [2021-06-13 06:57:46,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6250 conditions, 4722 events. 928/4722 cut-off events. For 358/365 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 57882 event pairs, 41 based on Foata normal form. 123/4672 useless extension candidates. Maximal degree in co-relation 5435. Up to 668 conditions per place. [2021-06-13 06:57:46,313 INFO L132 encePairwiseOnDemand]: 111/120 looper letters, 9 selfloop transitions, 19 changer transitions 0/141 dead transitions. [2021-06-13 06:57:46,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 141 transitions, 479 flow [2021-06-13 06:57:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:57:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:57:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2021-06-13 06:57:46,314 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9566666666666667 [2021-06-13 06:57:46,315 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2021-06-13 06:57:46,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2021-06-13 06:57:46,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:46,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2021-06-13 06:57:46,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:46,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:46,318 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:46,318 INFO L185 Difference]: Start difference. First operand has 111 places, 123 transitions, 387 flow. Second operand 5 states and 574 transitions. [2021-06-13 06:57:46,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 141 transitions, 479 flow [2021-06-13 06:57:46,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 141 transitions, 479 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:57:46,327 INFO L241 Difference]: Finished difference. Result has 117 places, 139 transitions, 493 flow [2021-06-13 06:57:46,327 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=493, PETRI_PLACES=117, PETRI_TRANSITIONS=139} [2021-06-13 06:57:46,327 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 15 predicate places. [2021-06-13 06:57:46,327 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 139 transitions, 493 flow [2021-06-13 06:57:46,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:46,327 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:46,328 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:46,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 06:57:46,328 INFO L430 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash 435675880, now seen corresponding path program 1 times [2021-06-13 06:57:46,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:46,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592473559] [2021-06-13 06:57:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:46,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:46,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:46,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:46,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:46,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:46,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:46,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:46,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:46,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:46,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:46,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:46,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:46,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:46,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592473559] [2021-06-13 06:57:46,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592473559] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:46,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:46,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 06:57:46,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708718206] [2021-06-13 06:57:46,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 06:57:46,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:46,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 06:57:46,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 06:57:46,367 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 120 [2021-06-13 06:57:46,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 139 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:46,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:46,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 120 [2021-06-13 06:57:46,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:47,754 INFO L129 PetriNetUnfolder]: 3476/15331 cut-off events. [2021-06-13 06:57:47,754 INFO L130 PetriNetUnfolder]: For 4262/4472 co-relation queries the response was YES. [2021-06-13 06:57:47,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24240 conditions, 15331 events. 3476/15331 cut-off events. For 4262/4472 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 221566 event pairs, 126 based on Foata normal form. 96/14943 useless extension candidates. Maximal degree in co-relation 20579. Up to 2114 conditions per place. [2021-06-13 06:57:47,848 INFO L132 encePairwiseOnDemand]: 111/120 looper letters, 80 selfloop transitions, 61 changer transitions 0/238 dead transitions. [2021-06-13 06:57:47,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 238 transitions, 1254 flow [2021-06-13 06:57:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 06:57:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 06:57:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 978 transitions. [2021-06-13 06:57:47,851 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9055555555555556 [2021-06-13 06:57:47,851 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 978 transitions. [2021-06-13 06:57:47,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 978 transitions. [2021-06-13 06:57:47,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:47,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 978 transitions. [2021-06-13 06:57:47,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.66666666666667) internal successors, (978), 9 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:47,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:47,854 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:47,854 INFO L185 Difference]: Start difference. First operand has 117 places, 139 transitions, 493 flow. Second operand 9 states and 978 transitions. [2021-06-13 06:57:47,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 238 transitions, 1254 flow [2021-06-13 06:57:47,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 238 transitions, 1254 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:57:47,886 INFO L241 Difference]: Finished difference. Result has 133 places, 203 transitions, 1152 flow [2021-06-13 06:57:47,887 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1152, PETRI_PLACES=133, PETRI_TRANSITIONS=203} [2021-06-13 06:57:47,887 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 31 predicate places. [2021-06-13 06:57:47,888 INFO L482 AbstractCegarLoop]: Abstraction has has 133 places, 203 transitions, 1152 flow [2021-06-13 06:57:47,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:47,888 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:47,888 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:47,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 06:57:47,888 INFO L430 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:47,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash 695574832, now seen corresponding path program 1 times [2021-06-13 06:57:47,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:47,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603392856] [2021-06-13 06:57:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:47,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:47,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:47,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:47,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:47,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:47,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:47,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:47,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:47,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:47,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:47,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:47,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603392856] [2021-06-13 06:57:47,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603392856] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:47,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:47,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 06:57:47,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901188087] [2021-06-13 06:57:47,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 06:57:47,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:47,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 06:57:47,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-13 06:57:47,946 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 120 [2021-06-13 06:57:47,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 203 transitions, 1152 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:47,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:47,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 120 [2021-06-13 06:57:47,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:48,195 INFO L129 PetriNetUnfolder]: 509/2707 cut-off events. [2021-06-13 06:57:48,195 INFO L130 PetriNetUnfolder]: For 1292/1488 co-relation queries the response was YES. [2021-06-13 06:57:48,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4296 conditions, 2707 events. 509/2707 cut-off events. For 1292/1488 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29445 event pairs, 6 based on Foata normal form. 71/2664 useless extension candidates. Maximal degree in co-relation 4036. Up to 400 conditions per place. [2021-06-13 06:57:48,209 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 6 selfloop transitions, 17 changer transitions 0/166 dead transitions. [2021-06-13 06:57:48,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 166 transitions, 865 flow [2021-06-13 06:57:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:57:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:57:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 578 transitions. [2021-06-13 06:57:48,211 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9633333333333334 [2021-06-13 06:57:48,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 578 transitions. [2021-06-13 06:57:48,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 578 transitions. [2021-06-13 06:57:48,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:48,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 578 transitions. [2021-06-13 06:57:48,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:48,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:48,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:48,214 INFO L185 Difference]: Start difference. First operand has 133 places, 203 transitions, 1152 flow. Second operand 5 states and 578 transitions. [2021-06-13 06:57:48,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 166 transitions, 865 flow [2021-06-13 06:57:48,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 166 transitions, 810 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-13 06:57:48,222 INFO L241 Difference]: Finished difference. Result has 132 places, 166 transitions, 802 flow [2021-06-13 06:57:48,222 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=802, PETRI_PLACES=132, PETRI_TRANSITIONS=166} [2021-06-13 06:57:48,222 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 30 predicate places. [2021-06-13 06:57:48,222 INFO L482 AbstractCegarLoop]: Abstraction has has 132 places, 166 transitions, 802 flow [2021-06-13 06:57:48,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:48,223 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:57:48,223 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:57:48,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 06:57:48,223 INFO L430 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:57:48,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:57:48,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1982469329, now seen corresponding path program 1 times [2021-06-13 06:57:48,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:57:48,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356257621] [2021-06-13 06:57:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:57:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:57:48,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:48,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:48,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:48,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:48,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:48,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:48,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:48,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:48,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:48,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:57:48,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:57:48,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:57:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:57:48,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:57:48,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356257621] [2021-06-13 06:57:48,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356257621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:57:48,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:57:48,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 06:57:48,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807887924] [2021-06-13 06:57:48,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 06:57:48,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:57:48,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 06:57:48,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-13 06:57:48,275 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 120 [2021-06-13 06:57:48,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 166 transitions, 802 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:48,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:57:48,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 120 [2021-06-13 06:57:48,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:57:48,432 INFO L129 PetriNetUnfolder]: 278/1675 cut-off events. [2021-06-13 06:57:48,432 INFO L130 PetriNetUnfolder]: For 635/784 co-relation queries the response was YES. [2021-06-13 06:57:48,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1675 events. 278/1675 cut-off events. For 635/784 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16292 event pairs, 2 based on Foata normal form. 31/1634 useless extension candidates. Maximal degree in co-relation 2572. Up to 228 conditions per place. [2021-06-13 06:57:48,439 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 0 selfloop transitions, 0 changer transitions 137/137 dead transitions. [2021-06-13 06:57:48,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 137 transitions, 617 flow [2021-06-13 06:57:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:57:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:57:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2021-06-13 06:57:48,440 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9566666666666667 [2021-06-13 06:57:48,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2021-06-13 06:57:48,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2021-06-13 06:57:48,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:57:48,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2021-06-13 06:57:48,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:48,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:48,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:48,442 INFO L185 Difference]: Start difference. First operand has 132 places, 166 transitions, 802 flow. Second operand 5 states and 574 transitions. [2021-06-13 06:57:48,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 137 transitions, 617 flow [2021-06-13 06:57:48,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 137 transitions, 555 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-06-13 06:57:48,446 INFO L241 Difference]: Finished difference. Result has 124 places, 0 transitions, 0 flow [2021-06-13 06:57:48,446 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=124, PETRI_TRANSITIONS=0} [2021-06-13 06:57:48,446 INFO L335 CegarLoopForPetriNet]: 102 programPoint places, 22 predicate places. [2021-06-13 06:57:48,446 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 0 transitions, 0 flow [2021-06-13 06:57:48,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:57:48,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 06:57:48,447 INFO L301 ceAbstractionStarter]: Result for error location readerThread1of1ForFork3 was SAFE (3/4) [2021-06-13 06:57:48,447 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 06:57:48,448 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:57:48,448 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:57:48,448 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:57:48,448 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:57:48,448 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:57:48,448 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:57:48,448 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:57:48,449 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 06:57:48,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 120 transitions, 308 flow [2021-06-13 06:57:48,455 INFO L129 PetriNetUnfolder]: 19/154 cut-off events. [2021-06-13 06:57:48,455 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-13 06:57:48,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 154 events. 19/154 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 300 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 105. Up to 12 conditions per place. [2021-06-13 06:57:48,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 120 transitions, 308 flow [2021-06-13 06:57:48,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 06:57:48,456 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 06:57:48,456 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:57:48,456 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/4) [2021-06-13 06:57:48,456 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 06:57:48,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 06:57:48 BasicIcfg [2021-06-13 06:57:48,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 06:57:48,461 INFO L168 Benchmark]: Toolchain (without parser) took 6449.00 ms. Allocated memory was 207.6 MB in the beginning and 459.3 MB in the end (delta: 251.7 MB). Free memory was 171.0 MB in the beginning and 270.9 MB in the end (delta: -99.8 MB). Peak memory consumption was 153.2 MB. Max. memory is 8.0 GB. [2021-06-13 06:57:48,461 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 207.6 MB. Free memory is still 188.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 06:57:48,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.00 ms. Allocated memory is still 207.6 MB. Free memory was 170.9 MB in the beginning and 171.1 MB in the end (delta: -292.4 kB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2021-06-13 06:57:48,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.92 ms. Allocated memory is still 207.6 MB. Free memory was 170.6 MB in the beginning and 168.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 06:57:48,463 INFO L168 Benchmark]: Boogie Preprocessor took 27.28 ms. Allocated memory is still 207.6 MB. Free memory was 168.5 MB in the beginning and 167.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 06:57:48,463 INFO L168 Benchmark]: RCFGBuilder took 385.64 ms. Allocated memory is still 207.6 MB. Free memory was 167.3 MB in the beginning and 133.9 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2021-06-13 06:57:48,464 INFO L168 Benchmark]: TraceAbstraction took 5597.97 ms. Allocated memory was 207.6 MB in the beginning and 459.3 MB in the end (delta: 251.7 MB). Free memory was 133.9 MB in the beginning and 270.9 MB in the end (delta: -136.9 MB). Peak memory consumption was 115.3 MB. Max. memory is 8.0 GB. [2021-06-13 06:57:48,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 207.6 MB. Free memory is still 188.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 379.00 ms. Allocated memory is still 207.6 MB. Free memory was 170.9 MB in the beginning and 171.1 MB in the end (delta: -292.4 kB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.92 ms. Allocated memory is still 207.6 MB. Free memory was 170.6 MB in the beginning and 168.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.28 ms. Allocated memory is still 207.6 MB. Free memory was 168.5 MB in the beginning and 167.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 385.64 ms. Allocated memory is still 207.6 MB. Free memory was 167.3 MB in the beginning and 133.9 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5597.97 ms. Allocated memory was 207.6 MB in the beginning and 459.3 MB in the end (delta: 251.7 MB). Free memory was 133.9 MB in the beginning and 270.9 MB in the end (delta: -136.9 MB). Peak memory consumption was 115.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 739]: 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 for errors in thread instance: reader with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 54.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 50.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: readerThread1of1ForFork0 with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2373.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1782.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 83 SDslu, 78 SDs, 0 SdLazy, 309 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 163.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 116.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=797occurred in iteration=4, InterpolantAutomatonStates: 36, 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: 19.5ms SsaConstructionTime, 129.3ms SatisfiabilityAnalysisTime, 280.5ms InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 539 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: readerThread1of1ForFork3 with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3048.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2762.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 93 SDslu, 84 SDs, 0 SdLazy, 332 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 160.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 121.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1152occurred in iteration=3, InterpolantAutomatonStates: 34, 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: 9.9ms SsaConstructionTime, 41.9ms SatisfiabilityAnalysisTime, 178.4ms InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 543 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 8.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...