/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 01:01:33,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 01:01:33,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 01:01:33,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 01:01:33,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 01:01:33,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 01:01:33,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 01:01:33,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 01:01:33,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 01:01:33,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 01:01:33,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 01:01:33,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 01:01:33,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 01:01:33,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 01:01:33,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 01:01:33,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 01:01:33,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 01:01:33,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 01:01:33,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 01:01:33,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 01:01:33,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 01:01:33,938 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 01:01:33,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 01:01:33,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 01:01:33,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 01:01:33,941 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 01:01:33,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 01:01:33,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 01:01:33,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 01:01:33,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 01:01:33,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 01:01:33,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 01:01:33,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 01:01:33,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 01:01:33,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 01:01:33,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 01:01:33,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 01:01:33,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 01:01:33,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 01:01:33,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 01:01:33,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 01:01:33,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 01:01:33,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 01:01:33,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 01:01:33,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 01:01:33,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 01:01:33,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 01:01:33,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 01:01:33,948 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 01:01:33,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 01:01:33,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 01:01:33,948 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 01:01:34,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 01:01:34,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 01:01:34,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 01:01:34,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 01:01:34,349 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 01:01:34,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-04-29 01:01:34,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42fa75afa/c7ec343d9a8f41e1b839ad87deb46756/FLAGfdad2f5c3 [2021-04-29 01:01:35,079 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 01:01:35,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-04-29 01:01:35,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42fa75afa/c7ec343d9a8f41e1b839ad87deb46756/FLAGfdad2f5c3 [2021-04-29 01:01:35,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42fa75afa/c7ec343d9a8f41e1b839ad87deb46756 [2021-04-29 01:01:35,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 01:01:35,419 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 01:01:35,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 01:01:35,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 01:01:35,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 01:01:35,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 01:01:35" (1/1) ... [2021-04-29 01:01:35,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e7be1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:35, skipping insertion in model container [2021-04-29 01:01:35,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 01:01:35" (1/1) ... [2021-04-29 01:01:35,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 01:01:35,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 01:01:35,930 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i[30003,30016] [2021-04-29 01:01:35,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 01:01:35,960 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 01:01:36,010 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i[30003,30016] [2021-04-29 01:01:36,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 01:01:36,129 INFO L208 MainTranslator]: Completed translation [2021-04-29 01:01:36,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36 WrapperNode [2021-04-29 01:01:36,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 01:01:36,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 01:01:36,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 01:01:36,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 01:01:36,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... [2021-04-29 01:01:36,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... [2021-04-29 01:01:36,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 01:01:36,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 01:01:36,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 01:01:36,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 01:01:36,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... [2021-04-29 01:01:36,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... [2021-04-29 01:01:36,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... [2021-04-29 01:01:36,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... [2021-04-29 01:01:36,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... [2021-04-29 01:01:36,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... [2021-04-29 01:01:36,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... [2021-04-29 01:01:36,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 01:01:36,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 01:01:36,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 01:01:36,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 01:01:36,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 01:01:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-04-29 01:01:36,377 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-04-29 01:01:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 01:01:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 01:01:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 01:01:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 01:01:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 01:01:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 01:01:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 01:01:36,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 01:01:36,380 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 01:01:36,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 01:01:36,942 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-04-29 01:01:36,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 01:01:36 BoogieIcfgContainer [2021-04-29 01:01:36,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 01:01:36,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 01:01:36,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 01:01:36,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 01:01:36,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 01:01:35" (1/3) ... [2021-04-29 01:01:36,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212afd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 01:01:36, skipping insertion in model container [2021-04-29 01:01:36,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:01:36" (2/3) ... [2021-04-29 01:01:36,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212afd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 01:01:36, skipping insertion in model container [2021-04-29 01:01:36,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 01:01:36" (3/3) ... [2021-04-29 01:01:36,954 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2021-04-29 01:01:36,962 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 01:01:36,968 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 01:01:36,969 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 01:01:37,003 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,004 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,004 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,004 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,004 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,005 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,005 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,005 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,005 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,005 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,006 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,006 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,006 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,006 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,006 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,007 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,007 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,007 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,007 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,007 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,007 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,008 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,008 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,008 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,008 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,009 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,009 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,009 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,009 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,009 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,009 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,010 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,010 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,010 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,010 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,011 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,011 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,011 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,011 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,011 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,012 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,012 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,012 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,012 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,013 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,013 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,013 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,013 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,014 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,014 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,014 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,014 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,014 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,015 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,015 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,015 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,015 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,015 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,016 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,016 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,016 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,016 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,016 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,017 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,019 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,019 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,019 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,020 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,020 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,020 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,020 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,020 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,021 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,021 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,021 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,021 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:01:37,024 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 01:01:37,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-29 01:01:37,079 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 01:01:37,080 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 01:01:37,080 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 01:01:37,080 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 01:01:37,080 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 01:01:37,080 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 01:01:37,080 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 01:01:37,081 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 01:01:37,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 197 flow [2021-04-29 01:01:37,144 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-04-29 01:01:37,144 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 01:01:37,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 6/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2021-04-29 01:01:37,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 96 transitions, 197 flow [2021-04-29 01:01:37,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 95 transitions, 193 flow [2021-04-29 01:01:37,161 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 01:01:37,178 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 95 transitions, 193 flow [2021-04-29 01:01:37,182 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 95 transitions, 193 flow [2021-04-29 01:01:37,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 95 transitions, 193 flow [2021-04-29 01:01:37,208 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-04-29 01:01:37,209 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 01:01:37,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 6/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2021-04-29 01:01:37,214 INFO L146 LiptonReduction]: Number of co-enabled transitions 2500 [2021-04-29 01:01:43,689 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 01:01:43,852 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 01:01:44,153 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 01:01:44,294 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 01:01:44,457 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 01:01:44,896 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 01:01:45,050 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 01:01:45,201 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-29 01:01:45,354 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-29 01:01:48,312 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:48,568 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:49,037 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:49,298 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:50,512 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:50,769 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:51,257 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:51,507 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:52,270 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:52,529 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:52,786 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-04-29 01:01:53,061 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-04-29 01:01:53,312 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:53,566 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 01:01:53,694 INFO L158 LiptonReduction]: Checked pairs total: 18378 [2021-04-29 01:01:53,694 INFO L160 LiptonReduction]: Total number of compositions: 212 [2021-04-29 01:01:53,699 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16540 [2021-04-29 01:01:53,720 INFO L129 PetriNetUnfolder]: 1/64 cut-off events. [2021-04-29 01:01:53,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 01:01:53,721 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 01:01:53,722 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-04-29 01:01:53,722 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 01:01:53,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 01:01:53,729 INFO L82 PathProgramCache]: Analyzing trace with hash 15188593, now seen corresponding path program 1 times [2021-04-29 01:01:53,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 01:01:53,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851765763] [2021-04-29 01:01:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 01:01:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 01:01:53,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 01:01:53,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 01:01:53,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 01:01:53,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 01:01:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 01:01:53,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851765763] [2021-04-29 01:01:53,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 01:01:53,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 01:01:53,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814371392] [2021-04-29 01:01:53,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 01:01:53,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 01:01:53,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 01:01:53,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 01:01:53,993 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 308 [2021-04-29 01:01:53,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:53,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 01:01:53,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 308 [2021-04-29 01:01:54,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 01:01:54,145 INFO L129 PetriNetUnfolder]: 20/550 cut-off events. [2021-04-29 01:01:54,145 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 01:01:54,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 550 events. 20/550 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 6257 event pairs, 0 based on Foata normal form. 10/78 useless extension candidates. Maximal degree in co-relation 594. Up to 65 conditions per place. [2021-04-29 01:01:54,150 INFO L132 encePairwiseOnDemand]: 280/308 looper letters, 5 selfloop transitions, 10 changer transitions 31/121 dead transitions. [2021-04-29 01:01:54,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 313 flow [2021-04-29 01:01:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 01:01:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 01:01:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 754 transitions. [2021-04-29 01:01:54,170 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.816017316017316 [2021-04-29 01:01:54,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 754 transitions. [2021-04-29 01:01:54,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 754 transitions. [2021-04-29 01:01:54,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 01:01:54,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 754 transitions. [2021-04-29 01:01:54,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,197 INFO L185 Difference]: Start difference. First operand has 121 places, 119 transitions, 241 flow. Second operand 3 states and 754 transitions. [2021-04-29 01:01:54,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 313 flow [2021-04-29 01:01:54,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 01:01:54,205 INFO L241 Difference]: Finished difference. Result has 122 places, 89 transitions, 214 flow [2021-04-29 01:01:54,208 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=122, PETRI_TRANSITIONS=89} [2021-04-29 01:01:54,209 INFO L343 CegarLoopForPetriNet]: 121 programPoint places, 1 predicate places. [2021-04-29 01:01:54,209 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 01:01:54,210 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 89 transitions, 214 flow [2021-04-29 01:01:54,210 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 89 transitions, 214 flow [2021-04-29 01:01:54,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 89 transitions, 214 flow [2021-04-29 01:01:54,249 INFO L129 PetriNetUnfolder]: 1/414 cut-off events. [2021-04-29 01:01:54,250 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 01:01:54,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 414 events. 1/414 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 4764 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 452. Up to 25 conditions per place. [2021-04-29 01:01:54,257 INFO L146 LiptonReduction]: Number of co-enabled transitions 3418 [2021-04-29 01:01:54,274 INFO L158 LiptonReduction]: Checked pairs total: 1414 [2021-04-29 01:01:54,275 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 01:01:54,275 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 66 [2021-04-29 01:01:54,277 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 214 flow [2021-04-29 01:01:54,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,278 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 01:01:54,279 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-04-29 01:01:54,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 01:01:54,279 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 01:01:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 01:01:54,280 INFO L82 PathProgramCache]: Analyzing trace with hash 470788122, now seen corresponding path program 1 times [2021-04-29 01:01:54,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 01:01:54,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302825230] [2021-04-29 01:01:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 01:01:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 01:01:54,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 01:01:54,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 01:01:54,341 INFO L142 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size [2021-04-29 01:01:54,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-29 01:01:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 01:01:54,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302825230] [2021-04-29 01:01:54,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 01:01:54,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 01:01:54,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621386467] [2021-04-29 01:01:54,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 01:01:54,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 01:01:54,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 01:01:54,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 01:01:54,350 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 308 [2021-04-29 01:01:54,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 01:01:54,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 308 [2021-04-29 01:01:54,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 01:01:54,492 INFO L129 PetriNetUnfolder]: 1/358 cut-off events. [2021-04-29 01:01:54,492 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-04-29 01:01:54,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 358 events. 1/358 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 3888 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 549. Up to 112 conditions per place. [2021-04-29 01:01:54,495 INFO L132 encePairwiseOnDemand]: 300/308 looper letters, 40 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2021-04-29 01:01:54,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 102 transitions, 322 flow [2021-04-29 01:01:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 01:01:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 01:01:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2021-04-29 01:01:54,499 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8993506493506493 [2021-04-29 01:01:54,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2021-04-29 01:01:54,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2021-04-29 01:01:54,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 01:01:54,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2021-04-29 01:01:54,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,508 INFO L185 Difference]: Start difference. First operand has 93 places, 89 transitions, 214 flow. Second operand 3 states and 831 transitions. [2021-04-29 01:01:54,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 102 transitions, 322 flow [2021-04-29 01:01:54,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 102 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 01:01:54,512 INFO L241 Difference]: Finished difference. Result has 94 places, 89 transitions, 211 flow [2021-04-29 01:01:54,513 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2021-04-29 01:01:54,513 INFO L343 CegarLoopForPetriNet]: 121 programPoint places, -27 predicate places. [2021-04-29 01:01:54,514 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 01:01:54,514 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 89 transitions, 211 flow [2021-04-29 01:01:54,514 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 89 transitions, 211 flow [2021-04-29 01:01:54,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 89 transitions, 211 flow [2021-04-29 01:01:54,554 INFO L129 PetriNetUnfolder]: 1/358 cut-off events. [2021-04-29 01:01:54,555 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-04-29 01:01:54,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 358 events. 1/358 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 3929 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 395. Up to 25 conditions per place. [2021-04-29 01:01:54,561 INFO L146 LiptonReduction]: Number of co-enabled transitions 3418 [2021-04-29 01:01:54,574 INFO L158 LiptonReduction]: Checked pairs total: 1414 [2021-04-29 01:01:54,575 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 01:01:54,575 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 61 [2021-04-29 01:01:54,577 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 211 flow [2021-04-29 01:01:54,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,578 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 01:01:54,578 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-04-29 01:01:54,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 01:01:54,579 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 01:01:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 01:01:54,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1709822460, now seen corresponding path program 1 times [2021-04-29 01:01:54,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 01:01:54,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202833323] [2021-04-29 01:01:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 01:01:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 01:01:54,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 01:01:54,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 01:01:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 01:01:54,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202833323] [2021-04-29 01:01:54,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 01:01:54,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 01:01:54,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482943473] [2021-04-29 01:01:54,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 01:01:54,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 01:01:54,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 01:01:54,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 01:01:54,636 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 308 [2021-04-29 01:01:54,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 01:01:54,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 308 [2021-04-29 01:01:54,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 01:01:54,773 INFO L129 PetriNetUnfolder]: 67/494 cut-off events. [2021-04-29 01:01:54,773 INFO L130 PetriNetUnfolder]: For 28/31 co-relation queries the response was YES. [2021-04-29 01:01:54,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 494 events. 67/494 cut-off events. For 28/31 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 5235 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 773. Up to 142 conditions per place. [2021-04-29 01:01:54,777 INFO L132 encePairwiseOnDemand]: 302/308 looper letters, 14 selfloop transitions, 4 changer transitions 38/102 dead transitions. [2021-04-29 01:01:54,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 102 transitions, 309 flow [2021-04-29 01:01:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 01:01:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 01:01:54,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 758 transitions. [2021-04-29 01:01:54,781 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8203463203463204 [2021-04-29 01:01:54,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 758 transitions. [2021-04-29 01:01:54,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 758 transitions. [2021-04-29 01:01:54,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 01:01:54,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 758 transitions. [2021-04-29 01:01:54,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,790 INFO L185 Difference]: Start difference. First operand has 94 places, 89 transitions, 211 flow. Second operand 3 states and 758 transitions. [2021-04-29 01:01:54,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 102 transitions, 309 flow [2021-04-29 01:01:54,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 01:01:54,797 INFO L241 Difference]: Finished difference. Result has 96 places, 64 transitions, 165 flow [2021-04-29 01:01:54,797 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=96, PETRI_TRANSITIONS=64} [2021-04-29 01:01:54,797 INFO L343 CegarLoopForPetriNet]: 121 programPoint places, -25 predicate places. [2021-04-29 01:01:54,798 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 01:01:54,798 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 64 transitions, 165 flow [2021-04-29 01:01:54,799 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 64 transitions, 165 flow [2021-04-29 01:01:54,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 64 transitions, 165 flow [2021-04-29 01:01:54,811 INFO L129 PetriNetUnfolder]: 1/97 cut-off events. [2021-04-29 01:01:54,812 INFO L130 PetriNetUnfolder]: For 4/7 co-relation queries the response was YES. [2021-04-29 01:01:54,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 97 events. 1/97 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 666 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 116. Up to 9 conditions per place. [2021-04-29 01:01:54,814 INFO L146 LiptonReduction]: Number of co-enabled transitions 750 [2021-04-29 01:01:54,878 INFO L158 LiptonReduction]: Checked pairs total: 402 [2021-04-29 01:01:54,879 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 01:01:54,879 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 81 [2021-04-29 01:01:54,881 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 165 flow [2021-04-29 01:01:54,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,883 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 01:01:54,883 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 01:01:54,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 01:01:54,883 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 01:01:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 01:01:54,884 INFO L82 PathProgramCache]: Analyzing trace with hash -994829299, now seen corresponding path program 1 times [2021-04-29 01:01:54,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 01:01:54,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087677246] [2021-04-29 01:01:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 01:01:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 01:01:54,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 01:01:54,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 01:01:54,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 01:01:54,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 01:01:54,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 01:01:54,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 01:01:54,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 01:01:54,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 01:01:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 01:01:54,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087677246] [2021-04-29 01:01:54,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 01:01:54,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 01:01:54,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953613112] [2021-04-29 01:01:54,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 01:01:54,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 01:01:54,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 01:01:54,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-29 01:01:54,973 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 308 [2021-04-29 01:01:54,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:54,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 01:01:54,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 308 [2021-04-29 01:01:54,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 01:01:55,127 INFO L129 PetriNetUnfolder]: 60/409 cut-off events. [2021-04-29 01:01:55,128 INFO L130 PetriNetUnfolder]: For 24/45 co-relation queries the response was YES. [2021-04-29 01:01:55,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 409 events. 60/409 cut-off events. For 24/45 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 3734 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 726. Up to 93 conditions per place. [2021-04-29 01:01:55,130 INFO L132 encePairwiseOnDemand]: 294/308 looper letters, 19 selfloop transitions, 18 changer transitions 27/107 dead transitions. [2021-04-29 01:01:55,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 386 flow [2021-04-29 01:01:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 01:01:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 01:01:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1333 transitions. [2021-04-29 01:01:55,135 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7213203463203464 [2021-04-29 01:01:55,135 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1333 transitions. [2021-04-29 01:01:55,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1333 transitions. [2021-04-29 01:01:55,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 01:01:55,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1333 transitions. [2021-04-29 01:01:55,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.16666666666666) internal successors, (1333), 6 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:55,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:55,148 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:55,148 INFO L185 Difference]: Start difference. First operand has 71 places, 64 transitions, 165 flow. Second operand 6 states and 1333 transitions. [2021-04-29 01:01:55,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 386 flow [2021-04-29 01:01:55,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 01:01:55,154 INFO L241 Difference]: Finished difference. Result has 78 places, 79 transitions, 300 flow [2021-04-29 01:01:55,154 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2021-04-29 01:01:55,154 INFO L343 CegarLoopForPetriNet]: 121 programPoint places, -43 predicate places. [2021-04-29 01:01:55,155 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 01:01:55,155 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 79 transitions, 300 flow [2021-04-29 01:01:55,155 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 79 transitions, 300 flow [2021-04-29 01:01:55,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 300 flow [2021-04-29 01:01:55,184 INFO L129 PetriNetUnfolder]: 10/291 cut-off events. [2021-04-29 01:01:55,184 INFO L130 PetriNetUnfolder]: For 33/51 co-relation queries the response was YES. [2021-04-29 01:01:55,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 291 events. 10/291 cut-off events. For 33/51 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 2805 event pairs, 0 based on Foata normal form. 3/67 useless extension candidates. Maximal degree in co-relation 513. Up to 71 conditions per place. [2021-04-29 01:01:55,188 INFO L146 LiptonReduction]: Number of co-enabled transitions 758 [2021-04-29 01:01:55,204 INFO L158 LiptonReduction]: Checked pairs total: 150 [2021-04-29 01:01:55,205 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 01:01:55,205 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-04-29 01:01:55,207 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 300 flow [2021-04-29 01:01:55,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:55,208 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 01:01:55,208 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 01:01:55,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 01:01:55,209 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 01:01:55,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 01:01:55,209 INFO L82 PathProgramCache]: Analyzing trace with hash -972514817, now seen corresponding path program 1 times [2021-04-29 01:01:55,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 01:01:55,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915125489] [2021-04-29 01:01:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 01:01:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 01:01:55,227 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 01:01:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 01:01:55,240 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 01:01:55,264 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-29 01:01:55,264 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-04-29 01:01:55,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 01:01:55,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 01:01:55 BasicIcfg [2021-04-29 01:01:55,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 01:01:55,303 INFO L168 Benchmark]: Toolchain (without parser) took 19948.23 ms. Allocated memory was 312.5 MB in the beginning and 604.0 MB in the end (delta: 291.5 MB). Free memory was 282.2 MB in the beginning and 407.9 MB in the end (delta: -125.8 MB). Peak memory consumption was 165.3 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:55,303 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 312.5 MB. Free memory is still 281.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 01:01:55,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.09 ms. Allocated memory is still 312.5 MB. Free memory was 279.1 MB in the beginning and 273.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:55,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.65 ms. Allocated memory is still 312.5 MB. Free memory was 273.8 MB in the beginning and 271.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:55,305 INFO L168 Benchmark]: Boogie Preprocessor took 27.66 ms. Allocated memory is still 312.5 MB. Free memory was 271.7 MB in the beginning and 270.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:55,306 INFO L168 Benchmark]: RCFGBuilder took 690.36 ms. Allocated memory is still 312.5 MB. Free memory was 270.3 MB in the beginning and 283.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:55,306 INFO L168 Benchmark]: TraceAbstraction took 18355.21 ms. Allocated memory was 312.5 MB in the beginning and 604.0 MB in the end (delta: 291.5 MB). Free memory was 282.6 MB in the beginning and 407.9 MB in the end (delta: -125.4 MB). Peak memory consumption was 165.1 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:55,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 312.5 MB. Free memory is still 281.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 706.09 ms. Allocated memory is still 312.5 MB. Free memory was 279.1 MB in the beginning and 273.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 92.65 ms. Allocated memory is still 312.5 MB. Free memory was 273.8 MB in the beginning and 271.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.66 ms. Allocated memory is still 312.5 MB. Free memory was 271.7 MB in the beginning and 270.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 690.36 ms. Allocated memory is still 312.5 MB. Free memory was 270.3 MB in the beginning and 283.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 18355.21 ms. Allocated memory was 312.5 MB in the beginning and 604.0 MB in the end (delta: 291.5 MB). Free memory was 282.6 MB in the beginning and 407.9 MB in the end (delta: -125.4 MB). Peak memory consumption was 165.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16512.5ms, 93 PlacesBefore, 121 PlacesAfterwards, 95 TransitionsBefore, 119 TransitionsAfterwards, 2500 CoEnabledTransitionPairs, 8 FixpointIterations, 63 TrivialSequentialCompositions, 143 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 4 ChoiceCompositions, 212 TotalNumberOfCompositions, 18378 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7403, positive: 7072, positive conditional: 7072, positive unconditional: 0, negative: 331, negative conditional: 331, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3527, positive: 3464, positive conditional: 0, positive unconditional: 3464, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3527, positive: 3464, positive conditional: 0, positive unconditional: 3464, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3527, positive: 3444, positive conditional: 0, positive unconditional: 3444, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 83, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 467, positive: 103, positive conditional: 0, positive unconditional: 103, negative: 364, negative conditional: 0, negative unconditional: 364, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7403, positive: 3608, positive conditional: 3608, positive unconditional: 0, negative: 268, negative conditional: 268, negative unconditional: 0, unknown: 3527, unknown conditional: 3527, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3496, Positive cache size: 3433, Positive conditional cache size: 3433, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 64.7ms, 122 PlacesBefore, 93 PlacesAfterwards, 89 TransitionsBefore, 89 TransitionsAfterwards, 3418 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 1414 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 183, positive: 139, positive conditional: 139, positive unconditional: 0, negative: 44, negative conditional: 44, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 28, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 28, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 28, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 183, positive: 112, positive conditional: 112, positive unconditional: 0, negative: 43, negative conditional: 43, negative unconditional: 0, unknown: 28, unknown conditional: 28, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3524, Positive cache size: 3460, Positive conditional cache size: 3460, Positive unconditional cache size: 0, Negative cache size: 64, Negative conditional cache size: 64, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 60.4ms, 94 PlacesBefore, 94 PlacesAfterwards, 89 TransitionsBefore, 89 TransitionsAfterwards, 3418 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 1414 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 179, positive: 135, positive conditional: 135, positive unconditional: 0, negative: 44, negative conditional: 44, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 17, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 17, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 179, positive: 119, positive conditional: 119, positive unconditional: 0, negative: 43, negative conditional: 43, negative unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3541, Positive cache size: 3476, Positive conditional cache size: 3476, Positive unconditional cache size: 0, Negative cache size: 65, Negative conditional cache size: 65, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 79.5ms, 96 PlacesBefore, 71 PlacesAfterwards, 64 TransitionsBefore, 64 TransitionsAfterwards, 750 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 402 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 139, positive: 95, positive conditional: 95, positive unconditional: 0, negative: 44, negative conditional: 44, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 56, positive: 46, positive conditional: 46, positive unconditional: 0, negative: 10, negative conditional: 2, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 56, positive: 46, positive conditional: 46, positive unconditional: 0, negative: 10, negative conditional: 2, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 56, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 10, negative conditional: 2, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 52, negative conditional: 19, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 139, positive: 49, positive conditional: 49, positive unconditional: 0, negative: 34, negative conditional: 34, negative unconditional: 0, unknown: 56, unknown conditional: 56, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3597, Positive cache size: 3522, Positive conditional cache size: 3522, Positive unconditional cache size: 0, Negative cache size: 75, Negative conditional cache size: 75, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 49.5ms, 78 PlacesBefore, 78 PlacesAfterwards, 79 TransitionsBefore, 79 TransitionsAfterwards, 758 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 150 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 74, positive: 55, positive conditional: 55, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 74, positive: 49, positive conditional: 49, positive unconditional: 0, negative: 17, negative conditional: 17, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3605, Positive cache size: 3528, Positive conditional cache size: 3528, Positive unconditional cache size: 0, Negative cache size: 77, Negative conditional cache size: 77, Negative unconditional cache size: 0 - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L755] 0 pthread_t t; [L756] 0 pendingIo = 1 [L757] 0 stoppingFlag = 0 [L758] 0 stoppingEvent = 0 [L759] 0 stopped = 0 [L760] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L734] 0 int status; [L703] 0 int lsf = stoppingFlag; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) [L709] 0 int lp = pendingIo; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L744] 1 stoppingFlag = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L725] 1 int pending; [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 [L748] 1 int lse = stoppingEvent; VAL [pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; VAL [pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L686] COND FALSE 1 !(!cond) [L751] 1 stopped = 1 [L752] 1 return 0; VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 18191.7ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 739.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16628.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61 SDtfs, 43 SDslu, 19 SDs, 0 SdLazy, 179 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 210.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=4, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.3ms SsaConstructionTime, 78.2ms SatisfiabilityAnalysisTime, 233.1ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...