/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 16:59:06,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:59:06,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:59:06,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:59:06,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:59:06,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:59:06,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:59:06,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:59:06,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:59:06,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:59:06,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:59:06,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:59:06,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:59:06,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:59:06,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:59:06,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:59:06,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:59:06,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:59:06,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:59:06,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:59:06,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:59:06,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:59:06,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:59:06,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:59:06,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 16:59:06,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 16:59:06,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 16:59:06,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 16:59:06,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 16:59:06,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 16:59:06,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:59:06,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:59:06,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:59:06,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:59:06,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:59:06,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:59:06,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:59:06,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:59:06,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:59:06,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:59:06,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:59:06,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 16:59:06,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:59:06,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:59:06,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:59:06,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:59:06,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:59:06,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:59:06,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:59:06,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:59:06,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:59:06,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:59:06,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:59:06,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:59:06,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:59:06,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:59:06,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:59:06,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:59:06,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:59:06,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:59:06,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:59:06,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:59:06,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:59:06,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:59:06,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:59:06,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:59:06,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:59:06,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:59:06,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:59:06,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 16:59:06,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 16:59:06,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:59:07,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:59:07,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:59:07,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:59:07,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:59:07,267 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:59:07,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-11 16:59:07,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72cf6107/1d7b6aa63f5e43d8b950636e93e2cddc/FLAG3b5b5d219 [2020-10-11 16:59:07,882 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:59:07,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-11 16:59:07,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72cf6107/1d7b6aa63f5e43d8b950636e93e2cddc/FLAG3b5b5d219 [2020-10-11 16:59:08,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72cf6107/1d7b6aa63f5e43d8b950636e93e2cddc [2020-10-11 16:59:08,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:59:08,182 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:59:08,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:59:08,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:59:08,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:59:08,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e22475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08, skipping insertion in model container [2020-10-11 16:59:08,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:59:08,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:59:08,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:59:08,684 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:59:08,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:59:08,795 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:59:08,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08 WrapperNode [2020-10-11 16:59:08,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:59:08,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:59:08,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:59:08,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:59:08,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:59:08,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:59:08,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:59:08,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:59:08,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (1/1) ... [2020-10-11 16:59:08,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:59:08,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:59:08,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:59:08,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:59:08,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (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 [2020-10-11 16:59:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:59:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:59:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-10-11 16:59:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-10-11 16:59:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:59:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:59:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:59:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:59:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-10-11 16:59:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-10-11 16:59:08,936 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 16:59:09,367 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:59:09,367 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-11 16:59:09,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:59:09 BoogieIcfgContainer [2020-10-11 16:59:09,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:59:09,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:59:09,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:59:09,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:59:09,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:59:08" (1/3) ... [2020-10-11 16:59:09,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e24981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:59:09, skipping insertion in model container [2020-10-11 16:59:09,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:08" (2/3) ... [2020-10-11 16:59:09,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e24981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:59:09, skipping insertion in model container [2020-10-11 16:59:09,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:59:09" (3/3) ... [2020-10-11 16:59:09,378 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-10-11 16:59:09,389 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:59:09,397 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 16:59:09,399 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:59:09,430 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,430 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,431 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,431 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,431 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,432 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,432 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,432 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,432 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,433 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,433 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,433 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,434 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,434 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,434 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,435 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,435 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,435 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,435 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,435 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,436 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,436 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,436 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,437 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,437 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,437 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,438 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,438 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,438 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,438 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,439 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,439 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,439 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,439 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,440 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,440 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,440 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,440 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,441 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,441 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,441 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,441 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,445 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,445 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,446 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,446 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,446 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,446 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,450 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,450 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,450 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,451 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,451 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,451 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,451 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,453 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,454 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,454 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,454 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,454 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,454 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,456 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,457 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,457 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,457 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,457 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,457 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,458 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:09,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-11 16:59:09,515 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:59:09,515 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 16:59:09,515 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:59:09,515 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:59:09,516 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:59:09,516 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:59:09,516 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:59:09,516 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:59:09,531 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-10-11 16:59:09,596 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-10-11 16:59:09,596 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-11 16:59:09,603 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 136 events. 19/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 327 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-10-11 16:59:09,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 102 transitions, 272 flow [2020-10-11 16:59:09,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 82 transitions, 212 flow [2020-10-11 16:59:09,625 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2020-10-11 16:59:09,625 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 16:59:09,626 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:09,627 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:09,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 16:59:09,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:09,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1517774319, now seen corresponding path program 1 times [2020-10-11 16:59:09,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:09,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091302064] [2020-10-11 16:59:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:09,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091302064] [2020-10-11 16:59:09,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:09,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 16:59:09,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477054406] [2020-10-11 16:59:09,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 16:59:09,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:09,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 16:59:09,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 16:59:10,074 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 102 [2020-10-11 16:59:10,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 212 flow. Second operand 4 states. [2020-10-11 16:59:10,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:10,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 102 [2020-10-11 16:59:10,079 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:10,434 INFO L129 PetriNetUnfolder]: 449/1789 cut-off events. [2020-10-11 16:59:10,434 INFO L130 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2020-10-11 16:59:10,447 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 1789 events. 449/1789 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16330 event pairs, 84 based on Foata normal form. 82/1761 useless extension candidates. Maximal degree in co-relation 2272. Up to 310 conditions per place. [2020-10-11 16:59:10,459 INFO L132 encePairwiseOnDemand]: 90/102 looper letters, 21 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2020-10-11 16:59:10,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 105 transitions, 336 flow [2020-10-11 16:59:10,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 16:59:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-11 16:59:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2020-10-11 16:59:10,478 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9431372549019608 [2020-10-11 16:59:10,479 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 481 transitions. [2020-10-11 16:59:10,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 481 transitions. [2020-10-11 16:59:10,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:10,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 481 transitions. [2020-10-11 16:59:10,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-11 16:59:10,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-11 16:59:10,498 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-11 16:59:10,501 INFO L185 Difference]: Start difference. First operand has 84 places, 82 transitions, 212 flow. Second operand 5 states and 481 transitions. [2020-10-11 16:59:10,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 105 transitions, 336 flow [2020-10-11 16:59:10,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 304 flow, removed 0 selfloop flow, removed 8 redundant places. [2020-10-11 16:59:10,520 INFO L241 Difference]: Finished difference. Result has 84 places, 97 transitions, 314 flow [2020-10-11 16:59:10,523 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2020-10-11 16:59:10,524 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2020-10-11 16:59:10,524 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 314 flow [2020-10-11 16:59:10,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 16:59:10,524 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:10,525 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:10,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:59:10,525 INFO L429 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 16:59:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:10,526 INFO L82 PathProgramCache]: Analyzing trace with hash 507076909, now seen corresponding path program 1 times [2020-10-11 16:59:10,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:10,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862716457] [2020-10-11 16:59:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:10,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862716457] [2020-10-11 16:59:10,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:10,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:59:10,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160460488] [2020-10-11 16:59:10,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:59:10,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:10,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:59:10,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:59:10,648 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 102 [2020-10-11 16:59:10,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 314 flow. Second operand 3 states. [2020-10-11 16:59:10,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:10,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 102 [2020-10-11 16:59:10,649 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:11,089 INFO L129 PetriNetUnfolder]: 490/2342 cut-off events. [2020-10-11 16:59:11,089 INFO L130 PetriNetUnfolder]: For 331/435 co-relation queries the response was YES. [2020-10-11 16:59:11,108 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3547 conditions, 2342 events. 490/2342 cut-off events. For 331/435 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 24227 event pairs, 72 based on Foata normal form. 36/2305 useless extension candidates. Maximal degree in co-relation 2374. Up to 272 conditions per place. [2020-10-11 16:59:11,126 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 3 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2020-10-11 16:59:11,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 97 transitions, 328 flow [2020-10-11 16:59:11,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:59:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:59:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2020-10-11 16:59:11,130 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9477124183006536 [2020-10-11 16:59:11,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2020-10-11 16:59:11,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2020-10-11 16:59:11,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:11,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2020-10-11 16:59:11,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:59:11,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:59:11,134 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:59:11,134 INFO L185 Difference]: Start difference. First operand has 84 places, 97 transitions, 314 flow. Second operand 3 states and 290 transitions. [2020-10-11 16:59:11,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 97 transitions, 328 flow [2020-10-11 16:59:11,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 97 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-11 16:59:11,141 INFO L241 Difference]: Finished difference. Result has 87 places, 97 transitions, 330 flow [2020-10-11 16:59:11,141 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=87, PETRI_TRANSITIONS=97} [2020-10-11 16:59:11,142 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2020-10-11 16:59:11,142 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 97 transitions, 330 flow [2020-10-11 16:59:11,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:59:11,143 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:11,143 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:11,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 16:59:11,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 16:59:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:11,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1421161453, now seen corresponding path program 2 times [2020-10-11 16:59:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:11,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373697289] [2020-10-11 16:59:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:11,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373697289] [2020-10-11 16:59:11,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:11,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 16:59:11,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811539539] [2020-10-11 16:59:11,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 16:59:11,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:11,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 16:59:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 16:59:11,362 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 102 [2020-10-11 16:59:11,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 97 transitions, 330 flow. Second operand 4 states. [2020-10-11 16:59:11,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:11,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 102 [2020-10-11 16:59:11,363 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:11,648 INFO L129 PetriNetUnfolder]: 385/1889 cut-off events. [2020-10-11 16:59:11,648 INFO L130 PetriNetUnfolder]: For 406/474 co-relation queries the response was YES. [2020-10-11 16:59:11,661 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2946 conditions, 1889 events. 385/1889 cut-off events. For 406/474 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18605 event pairs, 21 based on Foata normal form. 32/1877 useless extension candidates. Maximal degree in co-relation 1917. Up to 248 conditions per place. [2020-10-11 16:59:11,671 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 8 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2020-10-11 16:59:11,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 392 flow [2020-10-11 16:59:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 16:59:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-11 16:59:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2020-10-11 16:59:11,674 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-10-11 16:59:11,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2020-10-11 16:59:11,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2020-10-11 16:59:11,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:11,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2020-10-11 16:59:11,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-11 16:59:11,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-11 16:59:11,677 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-11 16:59:11,677 INFO L185 Difference]: Start difference. First operand has 87 places, 97 transitions, 330 flow. Second operand 4 states and 391 transitions. [2020-10-11 16:59:11,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 392 flow [2020-10-11 16:59:11,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 106 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 16:59:11,687 INFO L241 Difference]: Finished difference. Result has 91 places, 104 transitions, 390 flow [2020-10-11 16:59:11,688 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=91, PETRI_TRANSITIONS=104} [2020-10-11 16:59:11,688 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2020-10-11 16:59:11,688 INFO L481 AbstractCegarLoop]: Abstraction has has 91 places, 104 transitions, 390 flow [2020-10-11 16:59:11,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 16:59:11,688 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:11,689 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:11,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 16:59:11,689 INFO L429 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 16:59:11,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:11,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2139995975, now seen corresponding path program 1 times [2020-10-11 16:59:11,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:11,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556607892] [2020-10-11 16:59:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:11,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556607892] [2020-10-11 16:59:11,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:11,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 16:59:11,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946208850] [2020-10-11 16:59:11,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 16:59:11,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:11,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 16:59:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 16:59:11,904 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 102 [2020-10-11 16:59:11,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 104 transitions, 390 flow. Second operand 4 states. [2020-10-11 16:59:11,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:11,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 102 [2020-10-11 16:59:11,905 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:12,218 INFO L129 PetriNetUnfolder]: 446/2023 cut-off events. [2020-10-11 16:59:12,218 INFO L130 PetriNetUnfolder]: For 916/1009 co-relation queries the response was YES. [2020-10-11 16:59:12,232 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3612 conditions, 2023 events. 446/2023 cut-off events. For 916/1009 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19499 event pairs, 47 based on Foata normal form. 68/2040 useless extension candidates. Maximal degree in co-relation 1752. Up to 258 conditions per place. [2020-10-11 16:59:12,241 INFO L132 encePairwiseOnDemand]: 92/102 looper letters, 28 selfloop transitions, 24 changer transitions 0/129 dead transitions. [2020-10-11 16:59:12,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 129 transitions, 613 flow [2020-10-11 16:59:12,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 16:59:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-11 16:59:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2020-10-11 16:59:12,244 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2020-10-11 16:59:12,244 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2020-10-11 16:59:12,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2020-10-11 16:59:12,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:12,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2020-10-11 16:59:12,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-11 16:59:12,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-11 16:59:12,247 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-11 16:59:12,247 INFO L185 Difference]: Start difference. First operand has 91 places, 104 transitions, 390 flow. Second operand 5 states and 468 transitions. [2020-10-11 16:59:12,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 129 transitions, 613 flow [2020-10-11 16:59:12,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 129 transitions, 611 flow, removed 1 selfloop flow, removed 0 redundant places. [2020-10-11 16:59:12,253 INFO L241 Difference]: Finished difference. Result has 99 places, 124 transitions, 616 flow [2020-10-11 16:59:12,253 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=99, PETRI_TRANSITIONS=124} [2020-10-11 16:59:12,254 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, 15 predicate places. [2020-10-11 16:59:12,254 INFO L481 AbstractCegarLoop]: Abstraction has has 99 places, 124 transitions, 616 flow [2020-10-11 16:59:12,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 16:59:12,254 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:12,254 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:12,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 16:59:12,255 INFO L429 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 16:59:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2120846184, now seen corresponding path program 1 times [2020-10-11 16:59:12,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:12,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238371914] [2020-10-11 16:59:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:12,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238371914] [2020-10-11 16:59:12,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:12,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 16:59:12,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987831] [2020-10-11 16:59:12,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 16:59:12,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:12,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 16:59:12,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-11 16:59:12,435 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 102 [2020-10-11 16:59:12,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 124 transitions, 616 flow. Second operand 6 states. [2020-10-11 16:59:12,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:12,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 102 [2020-10-11 16:59:12,436 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:12,855 INFO L129 PetriNetUnfolder]: 540/2474 cut-off events. [2020-10-11 16:59:12,855 INFO L130 PetriNetUnfolder]: For 1909/2138 co-relation queries the response was YES. [2020-10-11 16:59:12,874 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 2474 events. 540/2474 cut-off events. For 1909/2138 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 25295 event pairs, 31 based on Foata normal form. 48/2454 useless extension candidates. Maximal degree in co-relation 3208. Up to 346 conditions per place. [2020-10-11 16:59:12,885 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 20 selfloop transitions, 15 changer transitions 9/146 dead transitions. [2020-10-11 16:59:12,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 146 transitions, 828 flow [2020-10-11 16:59:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 16:59:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 16:59:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 843 transitions. [2020-10-11 16:59:12,889 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9183006535947712 [2020-10-11 16:59:12,889 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 843 transitions. [2020-10-11 16:59:12,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 843 transitions. [2020-10-11 16:59:12,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:12,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 843 transitions. [2020-10-11 16:59:12,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 16:59:12,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 16:59:12,894 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 16:59:12,894 INFO L185 Difference]: Start difference. First operand has 99 places, 124 transitions, 616 flow. Second operand 9 states and 843 transitions. [2020-10-11 16:59:12,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 146 transitions, 828 flow [2020-10-11 16:59:12,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 146 transitions, 826 flow, removed 1 selfloop flow, removed 0 redundant places. [2020-10-11 16:59:12,906 INFO L241 Difference]: Finished difference. Result has 111 places, 129 transitions, 696 flow [2020-10-11 16:59:12,906 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=696, PETRI_PLACES=111, PETRI_TRANSITIONS=129} [2020-10-11 16:59:12,907 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, 27 predicate places. [2020-10-11 16:59:12,907 INFO L481 AbstractCegarLoop]: Abstraction has has 111 places, 129 transitions, 696 flow [2020-10-11 16:59:12,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 16:59:12,907 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:12,908 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:12,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 16:59:12,908 INFO L429 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 16:59:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:12,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1937399710, now seen corresponding path program 2 times [2020-10-11 16:59:12,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:12,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039425666] [2020-10-11 16:59:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:12,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039425666] [2020-10-11 16:59:12,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:12,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 16:59:12,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836951820] [2020-10-11 16:59:12,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 16:59:12,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:12,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 16:59:12,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-11 16:59:13,098 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 102 [2020-10-11 16:59:13,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 129 transitions, 696 flow. Second operand 6 states. [2020-10-11 16:59:13,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:13,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 102 [2020-10-11 16:59:13,099 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:13,606 INFO L129 PetriNetUnfolder]: 581/2666 cut-off events. [2020-10-11 16:59:13,607 INFO L130 PetriNetUnfolder]: For 2515/2818 co-relation queries the response was YES. [2020-10-11 16:59:13,639 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5160 conditions, 2666 events. 581/2666 cut-off events. For 2515/2818 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27820 event pairs, 29 based on Foata normal form. 63/2645 useless extension candidates. Maximal degree in co-relation 4805. Up to 390 conditions per place. [2020-10-11 16:59:13,649 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 21 selfloop transitions, 21 changer transitions 5/149 dead transitions. [2020-10-11 16:59:13,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 149 transitions, 937 flow [2020-10-11 16:59:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 16:59:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 16:59:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 752 transitions. [2020-10-11 16:59:13,652 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9215686274509803 [2020-10-11 16:59:13,652 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 752 transitions. [2020-10-11 16:59:13,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 752 transitions. [2020-10-11 16:59:13,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:13,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 752 transitions. [2020-10-11 16:59:13,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 16:59:13,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 16:59:13,657 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 16:59:13,657 INFO L185 Difference]: Start difference. First operand has 111 places, 129 transitions, 696 flow. Second operand 8 states and 752 transitions. [2020-10-11 16:59:13,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 149 transitions, 937 flow [2020-10-11 16:59:13,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 149 transitions, 892 flow, removed 11 selfloop flow, removed 3 redundant places. [2020-10-11 16:59:13,674 INFO L241 Difference]: Finished difference. Result has 115 places, 135 transitions, 770 flow [2020-10-11 16:59:13,674 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=770, PETRI_PLACES=115, PETRI_TRANSITIONS=135} [2020-10-11 16:59:13,675 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, 31 predicate places. [2020-10-11 16:59:13,675 INFO L481 AbstractCegarLoop]: Abstraction has has 115 places, 135 transitions, 770 flow [2020-10-11 16:59:13,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 16:59:13,675 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:13,675 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:13,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 16:59:13,676 INFO L429 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 16:59:13,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:13,676 INFO L82 PathProgramCache]: Analyzing trace with hash -374995350, now seen corresponding path program 3 times [2020-10-11 16:59:13,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:13,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40458400] [2020-10-11 16:59:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 16:59:13,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 16:59:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 16:59:13,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 16:59:13,744 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 16:59:13,744 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 16:59:13,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 16:59:13,764 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-11 16:59:13,765 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-11 16:59:13,766 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-11 16:59:13,766 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-11 16:59:13,767 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-11 16:59:13,767 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-11 16:59:13,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 04:59:13 BasicIcfg [2020-10-11 16:59:13,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 16:59:13,807 INFO L168 Benchmark]: Toolchain (without parser) took 5624.57 ms. Allocated memory was 252.7 MB in the beginning and 449.8 MB in the end (delta: 197.1 MB). Free memory was 205.5 MB in the beginning and 234.1 MB in the end (delta: -28.6 MB). Peak memory consumption was 168.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:13,808 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:59:13,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.80 ms. Allocated memory was 252.7 MB in the beginning and 317.2 MB in the end (delta: 64.5 MB). Free memory was 205.5 MB in the beginning and 273.1 MB in the end (delta: -67.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:13,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.19 ms. Allocated memory is still 317.2 MB. Free memory was 273.1 MB in the beginning and 270.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:13,811 INFO L168 Benchmark]: Boogie Preprocessor took 23.72 ms. Allocated memory is still 317.2 MB. Free memory was 270.6 MB in the beginning and 268.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:13,811 INFO L168 Benchmark]: RCFGBuilder took 500.34 ms. Allocated memory is still 317.2 MB. Free memory was 268.0 MB in the beginning and 238.6 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:13,812 INFO L168 Benchmark]: TraceAbstraction took 4434.42 ms. Allocated memory was 317.2 MB in the beginning and 449.8 MB in the end (delta: 132.6 MB). Free memory was 238.6 MB in the beginning and 234.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 137.1 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:13,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 612.80 ms. Allocated memory was 252.7 MB in the beginning and 317.2 MB in the end (delta: 64.5 MB). Free memory was 205.5 MB in the beginning and 273.1 MB in the end (delta: -67.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.19 ms. Allocated memory is still 317.2 MB. Free memory was 273.1 MB in the beginning and 270.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 23.72 ms. Allocated memory is still 317.2 MB. Free memory was 270.6 MB in the beginning and 268.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 500.34 ms. Allocated memory is still 317.2 MB. Free memory was 268.0 MB in the beginning and 238.6 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4434.42 ms. Allocated memory was 317.2 MB in the beginning and 449.8 MB in the end (delta: 132.6 MB). Free memory was 238.6 MB in the beginning and 234.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 137.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L677] 0 int w=0, r=0, x, y; VAL [r=0, w=0, x=0, y=0] [L703] 0 pthread_t t1, t2, t3, t4; VAL [r=0, w=0, x=0, y=0] [L704] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L705] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L693] 2 int l; VAL [r=0, w=0, x=0, y=0] [L694] CALL 2 __VERIFIER_atomic_take_read_lock() [L683] CALL 2 assume_abort_if_not(w==0) [L3] COND TRUE 2 !cond [L683] RET 2 assume_abort_if_not(w==0) [L684] 2 r = r+1 [L694] RET 2 __VERIFIER_atomic_take_read_lock() [L695] 2 l = x VAL [r=1, w=0, x=0, y=0] [L696] 2 y = l VAL [r=1, w=0, x=0, y=0] [L697] COND FALSE 2 !(!(y == x)) VAL [r=1, w=0, x=0, y=0] [L698] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L706] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, w=0, x=0, y=0] [L707] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, w=0, x=0, y=0] [L693] 4 int l; VAL [r=1, w=0, x=0, y=0] [L694] CALL 4 __VERIFIER_atomic_take_read_lock() [L683] CALL 4 assume_abort_if_not(w==0) [L3] COND TRUE 4 !cond [L683] RET 4 assume_abort_if_not(w==0) [L684] 4 r = r+1 [L694] RET 4 __VERIFIER_atomic_take_read_lock() [L695] 4 l = x VAL [r=2, w=0, x=0, y=0] [L696] 4 y = l VAL [r=2, w=0, x=0, y=0] [L699] 2 r = l VAL [r=0, w=0, x=0, y=0] [L687] CALL 1 __VERIFIER_atomic_take_write_lock() [L679] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L679] RET 1 assume_abort_if_not(w==0 && r==0) [L680] 1 w = 1 [L687] RET 1 __VERIFIER_atomic_take_write_lock() [L688] 1 x = 3 VAL [r=0, w=1, x=3, y=0] [L697] COND TRUE 4 !(y == x) VAL [r=0, w=1, x=3, y=0] [L697] 4 __VERIFIER_error() VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 96 SDslu, 50 SDs, 0 SdLazy, 343 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=770occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 13492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...