/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:08:07,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:08:07,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:08:07,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:08:07,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:08:07,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:08:07,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:08:07,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:08:07,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:08:07,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:08:07,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:08:07,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:08:07,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:08:07,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:08:07,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:08:07,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:08:07,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:08:07,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:08:07,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:08:07,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:08:07,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:08:07,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:08:07,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:08:07,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:08:07,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 22:08:07,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 22:08:07,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 22:08:07,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 22:08:07,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 22:08:07,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 22:08:07,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 22:08:07,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 22:08:07,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 22:08:07,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 22:08:07,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 22:08:07,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 22:08:07,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 22:08:07,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 22:08:07,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:08:07,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:08:07,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:08:07,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-18 22:08:07,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:08:07,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:08:07,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:08:07,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:08:07,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:08:07,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:08:07,953 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:08:07,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:08:07,953 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:08:07,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:08:07,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:08:07,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:08:07,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:08:07,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:08:07,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:08:07,954 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:08:07,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:08:07,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:08:07,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:08:07,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:08:07,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:08:07,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:08:07,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:08:07,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:08:07,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:08:07,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:08:07,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:08:07,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:08:07,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:08:07,956 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:08:07,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:08:07,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:08:08,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:08:08,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:08:08,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:08:08,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:08:08,156 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:08:08,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2022-01-18 22:08:08,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01348f243/891d8cd5adfe479e972d7f3e9c4b6d60/FLAGe32650ab2 [2022-01-18 22:08:08,555 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:08:08,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2022-01-18 22:08:08,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01348f243/891d8cd5adfe479e972d7f3e9c4b6d60/FLAGe32650ab2 [2022-01-18 22:08:08,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01348f243/891d8cd5adfe479e972d7f3e9c4b6d60 [2022-01-18 22:08:08,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:08:08,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:08:08,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:08:08,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:08:08,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:08:08,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:08:08" (1/1) ... [2022-01-18 22:08:08,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c318969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:08, skipping insertion in model container [2022-01-18 22:08:08,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:08:08" (1/1) ... [2022-01-18 22:08:08,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:08:09,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:08:09,133 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-18 22:08:09,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-01-18 22:08:09,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:08:09,233 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:08:09,255 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-18 22:08:09,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-01-18 22:08:09,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:08:09,290 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:08:09,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09 WrapperNode [2022-01-18 22:08:09,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:08:09,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:08:09,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:08:09,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:08:09,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,317 INFO L137 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 119 [2022-01-18 22:08:09,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:08:09,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:08:09,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:08:09,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:08:09,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:08:09,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:08:09,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:08:09,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:08:09,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (1/1) ... [2022-01-18 22:08:09,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:08:09,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:08:09,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 22:08:09,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 22:08:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 22:08:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:08:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:08:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:08:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-01-18 22:08:09,414 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-01-18 22:08:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:08:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:08:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:08:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:08:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:08:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:08:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-01-18 22:08:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-01-18 22:08:09,418 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:08:09,510 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:08:09,511 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:08:09,682 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:08:09,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:08:09,699 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:08:09,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:08:09 BoogieIcfgContainer [2022-01-18 22:08:09,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:08:09,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:08:09,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:08:09,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:08:09,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:08:08" (1/3) ... [2022-01-18 22:08:09,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57672231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:08:09, skipping insertion in model container [2022-01-18 22:08:09,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:08:09" (2/3) ... [2022-01-18 22:08:09,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57672231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:08:09, skipping insertion in model container [2022-01-18 22:08:09,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:08:09" (3/3) ... [2022-01-18 22:08:09,705 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-01-18 22:08:09,708 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:08:09,708 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:08:09,709 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:08:09,731 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,731 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,732 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,732 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,732 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,732 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,732 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,732 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,732 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,732 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,733 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,733 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,733 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,733 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,733 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,733 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,733 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,734 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,734 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,734 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,734 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,734 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,734 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,734 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,734 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,735 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,735 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,735 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,735 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,735 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,735 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,735 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,736 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,736 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,736 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,736 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,736 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,736 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,736 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,737 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,737 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,737 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,737 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,737 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,737 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,737 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,737 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,737 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,738 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,738 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,738 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,738 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,738 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,738 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,738 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,739 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,739 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,739 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,739 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,739 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,739 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,739 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,740 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,740 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,740 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,740 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,740 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,740 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,740 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,741 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,741 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,741 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,741 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,741 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,741 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,741 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,742 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,743 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,743 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,743 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,743 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,743 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,744 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,744 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,744 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,744 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,744 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,744 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,744 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,744 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,744 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,745 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,745 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,745 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,745 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,745 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,745 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,746 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,746 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,748 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,748 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,748 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,748 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,748 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,748 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,748 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,748 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,749 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,749 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,749 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,749 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,749 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,750 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,750 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,750 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,750 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,750 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,750 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,750 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,751 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,751 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,751 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,751 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,751 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,751 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,752 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,752 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,752 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,752 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:08:09,755 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 22:08:09,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:08:09,788 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 22:08:09,788 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-18 22:08:09,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 125 places, 114 transitions, 260 flow [2022-01-18 22:08:09,825 INFO L129 PetriNetUnfolder]: 2/110 cut-off events. [2022-01-18 22:08:09,825 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-18 22:08:09,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 110 events. 2/110 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2022-01-18 22:08:09,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 114 transitions, 260 flow [2022-01-18 22:08:09,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 96 transitions, 213 flow [2022-01-18 22:08:09,842 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2022-01-18 22:08:09,842 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:08:09,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:08:09,842 INFO L254 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] [2022-01-18 22:08:09,842 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 22:08:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:08:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2006515335, now seen corresponding path program 1 times [2022-01-18 22:08:09,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:08:09,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751912539] [2022-01-18 22:08:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:08:09,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:08:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:08:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:08:10,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:08:10,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751912539] [2022-01-18 22:08:10,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751912539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:08:10,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:08:10,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:08:10,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642170410] [2022-01-18 22:08:10,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:08:10,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:08:10,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:08:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:08:10,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:08:10,090 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-01-18 22:08:10,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 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) [2022-01-18 22:08:10,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:08:10,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-01-18 22:08:10,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:08:10,966 INFO L129 PetriNetUnfolder]: 3525/7769 cut-off events. [2022-01-18 22:08:10,966 INFO L130 PetriNetUnfolder]: For 1654/1654 co-relation queries the response was YES. [2022-01-18 22:08:10,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13923 conditions, 7769 events. 3525/7769 cut-off events. For 1654/1654 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 71695 event pairs, 961 based on Foata normal form. 422/7837 useless extension candidates. Maximal degree in co-relation 13398. Up to 1729 conditions per place. [2022-01-18 22:08:11,007 INFO L132 encePairwiseOnDemand]: 102/114 looper letters, 116 selfloop transitions, 32 changer transitions 0/214 dead transitions. [2022-01-18 22:08:11,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 214 transitions, 823 flow [2022-01-18 22:08:11,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 22:08:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-18 22:08:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1160 transitions. [2022-01-18 22:08:11,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.847953216374269 [2022-01-18 22:08:11,021 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1160 transitions. [2022-01-18 22:08:11,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1160 transitions. [2022-01-18 22:08:11,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:08:11,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1160 transitions. [2022-01-18 22:08:11,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.66666666666667) internal successors, (1160), 12 states have internal predecessors, (1160), 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) [2022-01-18 22:08:11,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 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) [2022-01-18 22:08:11,037 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 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) [2022-01-18 22:08:11,038 INFO L186 Difference]: Start difference. First operand has 107 places, 96 transitions, 213 flow. Second operand 12 states and 1160 transitions. [2022-01-18 22:08:11,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 214 transitions, 823 flow [2022-01-18 22:08:11,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 214 transitions, 764 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-01-18 22:08:11,052 INFO L242 Difference]: Finished difference. Result has 119 places, 129 transitions, 416 flow [2022-01-18 22:08:11,053 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=416, PETRI_PLACES=119, PETRI_TRANSITIONS=129} [2022-01-18 22:08:11,055 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 12 predicate places. [2022-01-18 22:08:11,055 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 129 transitions, 416 flow [2022-01-18 22:08:11,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 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) [2022-01-18 22:08:11,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:08:11,056 INFO L254 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] [2022-01-18 22:08:11,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:08:11,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 22:08:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:08:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1738116757, now seen corresponding path program 1 times [2022-01-18 22:08:11,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:08:11,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012165889] [2022-01-18 22:08:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:08:11,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:08:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:08:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:08:11,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:08:11,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012165889] [2022-01-18 22:08:11,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012165889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:08:11,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:08:11,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 22:08:11,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574998697] [2022-01-18 22:08:11,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:08:11,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 22:08:11,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:08:11,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 22:08:11,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 22:08:11,099 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 114 [2022-01-18 22:08:11,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 129 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2022-01-18 22:08:11,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:08:11,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 114 [2022-01-18 22:08:11,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:08:11,296 INFO L129 PetriNetUnfolder]: 412/2302 cut-off events. [2022-01-18 22:08:11,296 INFO L130 PetriNetUnfolder]: For 379/394 co-relation queries the response was YES. [2022-01-18 22:08:11,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3924 conditions, 2302 events. 412/2302 cut-off events. For 379/394 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22522 event pairs, 96 based on Foata normal form. 53/2230 useless extension candidates. Maximal degree in co-relation 3614. Up to 259 conditions per place. [2022-01-18 22:08:11,310 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 15 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2022-01-18 22:08:11,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 134 transitions, 470 flow [2022-01-18 22:08:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 22:08:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-18 22:08:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2022-01-18 22:08:11,312 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9181286549707602 [2022-01-18 22:08:11,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2022-01-18 22:08:11,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2022-01-18 22:08:11,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:08:11,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2022-01-18 22:08:11,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2022-01-18 22:08:11,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-01-18 22:08:11,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-01-18 22:08:11,314 INFO L186 Difference]: Start difference. First operand has 119 places, 129 transitions, 416 flow. Second operand 3 states and 314 transitions. [2022-01-18 22:08:11,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 134 transitions, 470 flow [2022-01-18 22:08:11,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 134 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-18 22:08:11,326 INFO L242 Difference]: Finished difference. Result has 122 places, 129 transitions, 432 flow [2022-01-18 22:08:11,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=122, PETRI_TRANSITIONS=129} [2022-01-18 22:08:11,327 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 15 predicate places. [2022-01-18 22:08:11,327 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 129 transitions, 432 flow [2022-01-18 22:08:11,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2022-01-18 22:08:11,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:08:11,327 INFO L254 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] [2022-01-18 22:08:11,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:08:11,328 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 22:08:11,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:08:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash -546292075, now seen corresponding path program 2 times [2022-01-18 22:08:11,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:08:11,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926221364] [2022-01-18 22:08:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:08:11,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:08:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:08:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:08:11,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:08:11,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926221364] [2022-01-18 22:08:11,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926221364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:08:11,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:08:11,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 22:08:11,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559809485] [2022-01-18 22:08:11,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:08:11,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 22:08:11,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:08:11,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 22:08:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 22:08:11,427 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 114 [2022-01-18 22:08:11,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 129 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2022-01-18 22:08:11,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:08:11,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 114 [2022-01-18 22:08:11,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:08:11,632 INFO L129 PetriNetUnfolder]: 537/2194 cut-off events. [2022-01-18 22:08:11,633 INFO L130 PetriNetUnfolder]: For 1283/1327 co-relation queries the response was YES. [2022-01-18 22:08:11,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 2194 events. 537/2194 cut-off events. For 1283/1327 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20325 event pairs, 80 based on Foata normal form. 99/2222 useless extension candidates. Maximal degree in co-relation 4089. Up to 343 conditions per place. [2022-01-18 22:08:11,646 INFO L132 encePairwiseOnDemand]: 107/114 looper letters, 36 selfloop transitions, 9 changer transitions 2/157 dead transitions. [2022-01-18 22:08:11,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 157 transitions, 626 flow [2022-01-18 22:08:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 22:08:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-18 22:08:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2022-01-18 22:08:11,647 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9254385964912281 [2022-01-18 22:08:11,648 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2022-01-18 22:08:11,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2022-01-18 22:08:11,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:08:11,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2022-01-18 22:08:11,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 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) [2022-01-18 22:08:11,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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) [2022-01-18 22:08:11,650 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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) [2022-01-18 22:08:11,650 INFO L186 Difference]: Start difference. First operand has 122 places, 129 transitions, 432 flow. Second operand 4 states and 422 transitions. [2022-01-18 22:08:11,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 157 transitions, 626 flow [2022-01-18 22:08:11,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 157 transitions, 614 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-18 22:08:11,658 INFO L242 Difference]: Finished difference. Result has 126 places, 135 transitions, 490 flow [2022-01-18 22:08:11,658 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=490, PETRI_PLACES=126, PETRI_TRANSITIONS=135} [2022-01-18 22:08:11,660 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 19 predicate places. [2022-01-18 22:08:11,660 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 135 transitions, 490 flow [2022-01-18 22:08:11,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2022-01-18 22:08:11,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:08:11,661 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:08:11,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:08:11,661 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 22:08:11,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:08:11,661 INFO L85 PathProgramCache]: Analyzing trace with hash 579299824, now seen corresponding path program 1 times [2022-01-18 22:08:11,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:08:11,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044058324] [2022-01-18 22:08:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:08:11,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:08:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:08:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:08:11,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:08:11,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044058324] [2022-01-18 22:08:11,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044058324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:08:11,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:08:11,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:08:11,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244437967] [2022-01-18 22:08:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:08:11,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:08:11,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:08:11,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:08:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:08:11,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-01-18 22:08:11,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 135 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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) [2022-01-18 22:08:11,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:08:11,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-01-18 22:08:11,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:08:12,189 INFO L129 PetriNetUnfolder]: 1652/4268 cut-off events. [2022-01-18 22:08:12,189 INFO L130 PetriNetUnfolder]: For 4788/4876 co-relation queries the response was YES. [2022-01-18 22:08:12,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11053 conditions, 4268 events. 1652/4268 cut-off events. For 4788/4876 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 40097 event pairs, 342 based on Foata normal form. 50/4208 useless extension candidates. Maximal degree in co-relation 10551. Up to 668 conditions per place. [2022-01-18 22:08:12,213 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 123 selfloop transitions, 46 changer transitions 57/298 dead transitions. [2022-01-18 22:08:12,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 298 transitions, 1752 flow [2022-01-18 22:08:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 22:08:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-18 22:08:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1151 transitions. [2022-01-18 22:08:12,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.841374269005848 [2022-01-18 22:08:12,215 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1151 transitions. [2022-01-18 22:08:12,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1151 transitions. [2022-01-18 22:08:12,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:08:12,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1151 transitions. [2022-01-18 22:08:12,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 95.91666666666667) internal successors, (1151), 12 states have internal predecessors, (1151), 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) [2022-01-18 22:08:12,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 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) [2022-01-18 22:08:12,225 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 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) [2022-01-18 22:08:12,226 INFO L186 Difference]: Start difference. First operand has 126 places, 135 transitions, 490 flow. Second operand 12 states and 1151 transitions. [2022-01-18 22:08:12,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 298 transitions, 1752 flow [2022-01-18 22:08:12,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 298 transitions, 1752 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-18 22:08:12,284 INFO L242 Difference]: Finished difference. Result has 147 places, 166 transitions, 854 flow [2022-01-18 22:08:12,285 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=854, PETRI_PLACES=147, PETRI_TRANSITIONS=166} [2022-01-18 22:08:12,285 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 40 predicate places. [2022-01-18 22:08:12,286 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 166 transitions, 854 flow [2022-01-18 22:08:12,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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) [2022-01-18 22:08:12,286 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:08:12,286 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:08:12,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:08:12,286 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 22:08:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:08:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1097766141, now seen corresponding path program 1 times [2022-01-18 22:08:12,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:08:12,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735771577] [2022-01-18 22:08:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:08:12,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:08:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:08:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:08:12,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:08:12,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735771577] [2022-01-18 22:08:12,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735771577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:08:12,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:08:12,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:08:12,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46232009] [2022-01-18 22:08:12,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:08:12,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:08:12,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:08:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:08:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:08:12,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-01-18 22:08:12,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 166 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 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) [2022-01-18 22:08:12,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:08:12,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-01-18 22:08:12,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:08:12,800 INFO L129 PetriNetUnfolder]: 1449/4168 cut-off events. [2022-01-18 22:08:12,800 INFO L130 PetriNetUnfolder]: For 6626/6658 co-relation queries the response was YES. [2022-01-18 22:08:12,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12728 conditions, 4168 events. 1449/4168 cut-off events. For 6626/6658 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40921 event pairs, 324 based on Foata normal form. 64/4184 useless extension candidates. Maximal degree in co-relation 12079. Up to 772 conditions per place. [2022-01-18 22:08:12,832 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 121 selfloop transitions, 59 changer transitions 15/267 dead transitions. [2022-01-18 22:08:12,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 267 transitions, 1822 flow [2022-01-18 22:08:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:08:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:08:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1213 transitions. [2022-01-18 22:08:12,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8184885290148448 [2022-01-18 22:08:12,835 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1213 transitions. [2022-01-18 22:08:12,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1213 transitions. [2022-01-18 22:08:12,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:08:12,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1213 transitions. [2022-01-18 22:08:12,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 93.3076923076923) internal successors, (1213), 13 states have internal predecessors, (1213), 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) [2022-01-18 22:08:12,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 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) [2022-01-18 22:08:12,841 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 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) [2022-01-18 22:08:12,841 INFO L186 Difference]: Start difference. First operand has 147 places, 166 transitions, 854 flow. Second operand 13 states and 1213 transitions. [2022-01-18 22:08:12,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 267 transitions, 1822 flow [2022-01-18 22:08:12,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 267 transitions, 1784 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-18 22:08:12,886 INFO L242 Difference]: Finished difference. Result has 161 places, 187 transitions, 1148 flow [2022-01-18 22:08:12,886 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1148, PETRI_PLACES=161, PETRI_TRANSITIONS=187} [2022-01-18 22:08:12,888 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 54 predicate places. [2022-01-18 22:08:12,888 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 187 transitions, 1148 flow [2022-01-18 22:08:12,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 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) [2022-01-18 22:08:12,889 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:08:12,889 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:08:12,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:08:12,889 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 22:08:12,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:08:12,889 INFO L85 PathProgramCache]: Analyzing trace with hash 986673511, now seen corresponding path program 1 times [2022-01-18 22:08:12,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:08:12,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816428045] [2022-01-18 22:08:12,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:08:12,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:08:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:08:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:08:12,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:08:12,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816428045] [2022-01-18 22:08:12,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816428045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:08:12,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:08:12,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:08:12,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820703987] [2022-01-18 22:08:12,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:08:12,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:08:12,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:08:12,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:08:12,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:08:12,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-01-18 22:08:12,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 187 transitions, 1148 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 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) [2022-01-18 22:08:12,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:08:12,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-01-18 22:08:12,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:08:13,541 INFO L129 PetriNetUnfolder]: 1575/4455 cut-off events. [2022-01-18 22:08:13,542 INFO L130 PetriNetUnfolder]: For 8680/8716 co-relation queries the response was YES. [2022-01-18 22:08:13,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14434 conditions, 4455 events. 1575/4455 cut-off events. For 8680/8716 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 43982 event pairs, 399 based on Foata normal form. 77/4467 useless extension candidates. Maximal degree in co-relation 13860. Up to 982 conditions per place. [2022-01-18 22:08:13,568 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 129 selfloop transitions, 63 changer transitions 27/295 dead transitions. [2022-01-18 22:08:13,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 295 transitions, 2213 flow [2022-01-18 22:08:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:08:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:08:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1218 transitions. [2022-01-18 22:08:13,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8218623481781376 [2022-01-18 22:08:13,571 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1218 transitions. [2022-01-18 22:08:13,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1218 transitions. [2022-01-18 22:08:13,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:08:13,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1218 transitions. [2022-01-18 22:08:13,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 93.6923076923077) internal successors, (1218), 13 states have internal predecessors, (1218), 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) [2022-01-18 22:08:13,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 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) [2022-01-18 22:08:13,576 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 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) [2022-01-18 22:08:13,576 INFO L186 Difference]: Start difference. First operand has 161 places, 187 transitions, 1148 flow. Second operand 13 states and 1218 transitions. [2022-01-18 22:08:13,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 295 transitions, 2213 flow [2022-01-18 22:08:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 295 transitions, 2171 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-01-18 22:08:13,610 INFO L242 Difference]: Finished difference. Result has 175 places, 206 transitions, 1443 flow [2022-01-18 22:08:13,610 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1443, PETRI_PLACES=175, PETRI_TRANSITIONS=206} [2022-01-18 22:08:13,612 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 68 predicate places. [2022-01-18 22:08:13,612 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 206 transitions, 1443 flow [2022-01-18 22:08:13,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 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) [2022-01-18 22:08:13,612 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:08:13,612 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:08:13,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 22:08:13,612 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 22:08:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:08:13,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1800096226, now seen corresponding path program 1 times [2022-01-18 22:08:13,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:08:13,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010093853] [2022-01-18 22:08:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:08:13,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:08:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:08:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:08:13,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:08:13,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010093853] [2022-01-18 22:08:13,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010093853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:08:13,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:08:13,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:08:13,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073961847] [2022-01-18 22:08:13,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:08:13,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:08:13,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:08:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:08:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:08:13,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2022-01-18 22:08:13,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 206 transitions, 1443 flow. Second operand has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2022-01-18 22:08:13,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:08:13,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2022-01-18 22:08:13,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:08:14,023 INFO L129 PetriNetUnfolder]: 673/2900 cut-off events. [2022-01-18 22:08:14,023 INFO L130 PetriNetUnfolder]: For 6525/6611 co-relation queries the response was YES. [2022-01-18 22:08:14,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9235 conditions, 2900 events. 673/2900 cut-off events. For 6525/6611 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 29294 event pairs, 50 based on Foata normal form. 83/2962 useless extension candidates. Maximal degree in co-relation 8794. Up to 290 conditions per place. [2022-01-18 22:08:14,040 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 57 selfloop transitions, 17 changer transitions 34/254 dead transitions. [2022-01-18 22:08:14,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 254 transitions, 1836 flow [2022-01-18 22:08:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 22:08:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-18 22:08:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1062 transitions. [2022-01-18 22:08:14,042 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.84688995215311 [2022-01-18 22:08:14,042 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1062 transitions. [2022-01-18 22:08:14,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1062 transitions. [2022-01-18 22:08:14,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:08:14,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1062 transitions. [2022-01-18 22:08:14,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 96.54545454545455) internal successors, (1062), 11 states have internal predecessors, (1062), 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) [2022-01-18 22:08:14,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 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) [2022-01-18 22:08:14,046 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 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) [2022-01-18 22:08:14,046 INFO L186 Difference]: Start difference. First operand has 175 places, 206 transitions, 1443 flow. Second operand 11 states and 1062 transitions. [2022-01-18 22:08:14,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 254 transitions, 1836 flow [2022-01-18 22:08:14,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 254 transitions, 1754 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-01-18 22:08:14,080 INFO L242 Difference]: Finished difference. Result has 182 places, 191 transitions, 1257 flow [2022-01-18 22:08:14,080 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1257, PETRI_PLACES=182, PETRI_TRANSITIONS=191} [2022-01-18 22:08:14,080 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 75 predicate places. [2022-01-18 22:08:14,080 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 191 transitions, 1257 flow [2022-01-18 22:08:14,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2022-01-18 22:08:14,081 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:08:14,081 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:08:14,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 22:08:14,081 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 22:08:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:08:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1208605840, now seen corresponding path program 2 times [2022-01-18 22:08:14,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:08:14,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503760096] [2022-01-18 22:08:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:08:14,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:08:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:08:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:08:14,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:08:14,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503760096] [2022-01-18 22:08:14,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503760096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:08:14,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:08:14,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:08:14,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17420933] [2022-01-18 22:08:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:08:14,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:08:14,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:08:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:08:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:08:14,128 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2022-01-18 22:08:14,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 191 transitions, 1257 flow. Second operand has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2022-01-18 22:08:14,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:08:14,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2022-01-18 22:08:14,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:08:14,381 INFO L129 PetriNetUnfolder]: 545/2342 cut-off events. [2022-01-18 22:08:14,381 INFO L130 PetriNetUnfolder]: For 5675/5734 co-relation queries the response was YES. [2022-01-18 22:08:14,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8191 conditions, 2342 events. 545/2342 cut-off events. For 5675/5734 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22784 event pairs, 67 based on Foata normal form. 19/2346 useless extension candidates. Maximal degree in co-relation 8125. Up to 303 conditions per place. [2022-01-18 22:08:14,396 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 55 selfloop transitions, 21 changer transitions 13/235 dead transitions. [2022-01-18 22:08:14,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 235 transitions, 1665 flow [2022-01-18 22:08:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:08:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:08:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 873 transitions. [2022-01-18 22:08:14,398 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8508771929824561 [2022-01-18 22:08:14,398 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 873 transitions. [2022-01-18 22:08:14,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 873 transitions. [2022-01-18 22:08:14,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:08:14,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 873 transitions. [2022-01-18 22:08:14,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 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) [2022-01-18 22:08:14,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-01-18 22:08:14,401 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-01-18 22:08:14,402 INFO L186 Difference]: Start difference. First operand has 182 places, 191 transitions, 1257 flow. Second operand 9 states and 873 transitions. [2022-01-18 22:08:14,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 235 transitions, 1665 flow [2022-01-18 22:08:14,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 235 transitions, 1557 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-01-18 22:08:14,424 INFO L242 Difference]: Finished difference. Result has 176 places, 195 transitions, 1235 flow [2022-01-18 22:08:14,424 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1235, PETRI_PLACES=176, PETRI_TRANSITIONS=195} [2022-01-18 22:08:14,425 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 69 predicate places. [2022-01-18 22:08:14,425 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 195 transitions, 1235 flow [2022-01-18 22:08:14,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2022-01-18 22:08:14,425 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:08:14,425 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:08:14,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 22:08:14,425 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 22:08:14,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:08:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -110724310, now seen corresponding path program 3 times [2022-01-18 22:08:14,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:08:14,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603491635] [2022-01-18 22:08:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:08:14,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:08:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 22:08:14,436 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 22:08:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 22:08:14,458 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 22:08:14,458 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 22:08:14,459 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-01-18 22:08:14,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-01-18 22:08:14,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2022-01-18 22:08:14,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 7 remaining) [2022-01-18 22:08:14,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 7 remaining) [2022-01-18 22:08:14,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 7 remaining) [2022-01-18 22:08:14,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-01-18 22:08:14,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 22:08:14,463 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2022-01-18 22:08:14,465 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:08:14,465 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:08:14,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:08:14 BasicIcfg [2022-01-18 22:08:14,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:08:14,511 INFO L158 Benchmark]: Toolchain (without parser) took 5548.75ms. Allocated memory was 421.5MB in the beginning and 1.0GB in the end (delta: 583.0MB). Free memory was 367.9MB in the beginning and 454.9MB in the end (delta: -87.0MB). Peak memory consumption was 496.3MB. Max. memory is 16.0GB. [2022-01-18 22:08:14,511 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 421.5MB. Free memory is still 385.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:08:14,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.28ms. Allocated memory was 421.5MB in the beginning and 627.0MB in the end (delta: 205.5MB). Free memory was 367.7MB in the beginning and 591.3MB in the end (delta: -223.6MB). Peak memory consumption was 11.6MB. Max. memory is 16.0GB. [2022-01-18 22:08:14,512 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.71ms. Allocated memory is still 627.0MB. Free memory was 591.3MB in the beginning and 589.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:08:14,512 INFO L158 Benchmark]: Boogie Preprocessor took 13.92ms. Allocated memory is still 627.0MB. Free memory was 589.2MB in the beginning and 587.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:08:14,512 INFO L158 Benchmark]: RCFGBuilder took 368.67ms. Allocated memory is still 627.0MB. Free memory was 587.9MB in the beginning and 572.4MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-18 22:08:14,513 INFO L158 Benchmark]: TraceAbstraction took 4809.49ms. Allocated memory was 627.0MB in the beginning and 1.0GB in the end (delta: 377.5MB). Free memory was 572.4MB in the beginning and 454.9MB in the end (delta: 117.5MB). Peak memory consumption was 495.8MB. Max. memory is 16.0GB. [2022-01-18 22:08:14,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 421.5MB. Free memory is still 385.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 327.28ms. Allocated memory was 421.5MB in the beginning and 627.0MB in the end (delta: 205.5MB). Free memory was 367.7MB in the beginning and 591.3MB in the end (delta: -223.6MB). Peak memory consumption was 11.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.71ms. Allocated memory is still 627.0MB. Free memory was 591.3MB in the beginning and 589.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 13.92ms. Allocated memory is still 627.0MB. Free memory was 589.2MB in the beginning and 587.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 368.67ms. Allocated memory is still 627.0MB. Free memory was 587.9MB in the beginning and 572.4MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4809.49ms. Allocated memory was 627.0MB in the beginning and 1.0GB in the end (delta: 377.5MB). Free memory was 572.4MB in the beginning and 454.9MB in the end (delta: 117.5MB). Peak memory consumption was 495.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 738]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L704] 0 int w=0, r=0, x, y; VAL [r=0, w=0, x=0, y=0] [L748] 0 pthread_t t1, t2, t3, t4; VAL [r=0, t1={6:0}, t2={7:0}, t3={8:0}, t4={5:0}, w=0, x=0, y=0] [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [pthread_create(&t1, 0, writer, 0)=-3, r=0, t1={6:0}, t2={7:0}, t3={8:0}, t4={5:0}, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [pthread_create(&t2, 0, reader, 0)=-2, r=0, t1={6:0}, t2={7:0}, t3={8:0}, t4={5:0}, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [pthread_create(&t3, 0, writer, 0)=-1, r=0, t1={6:0}, t2={7:0}, t3={8:0}, t4={5:0}, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [pthread_create(&t4, 0, reader, 0)=0, r=0, t1={6:0}, t2={7:0}, t3={8:0}, t4={5:0}, w=0, x=0, y=0] [L724] 2 int l; VAL [arg={0:0}, arg={0:0}, r=0, w=0, x=0, y=0] [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [arg={0:0}, arg={0:0}, l=0, ly=0, r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L740] 2 l = r-1 VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L724] 4 int l; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L727] 4 l = x VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L730] 4 y = l VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L733] 4 int ly = y; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L743] 2 r = l VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, x=0, y=0] [L714] CALL 1 __VERIFIER_atomic_take_write_lock() [L706] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L706] RET 1 assume_abort_if_not(w==0 && r==0) [L707] 1 w = 1 [L714] RET 1 __VERIFIER_atomic_take_write_lock() [L716] 1 x = 3 VAL [arg={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L736] 4 int lx = x; VAL [arg={0:0}, arg={0:0}, l=0, lx=3, ly=0, r=0, w=1, x=3, y=0] [L738] COND TRUE 4 !(ly == lx) VAL [arg={0:0}, arg={0:0}, l=0, lx=3, ly=0, r=0, w=1, x=3, y=0] [L738] 4 reach_error() VAL [arg={0:0}, arg={0:0}, l=0, lx=3, ly=0, r=0, w=1, x=3, y=0] - UnprovableResult [Line: 749]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 139 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 566 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 566 mSDsluCounter, 413 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 818 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1488 IncrementalHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 166 mSDtfsCounter, 1488 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1443occurred in iteration=6, InterpolantAutomatonStates: 77, 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, 0.4s InterpolantComputationTime, 478 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 734 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2022-01-18 22:08:14,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...