/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 04:06:28,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 04:06:28,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 04:06:28,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 04:06:28,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 04:06:28,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 04:06:28,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 04:06:28,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 04:06:28,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 04:06:28,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 04:06:28,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 04:06:28,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 04:06:28,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 04:06:28,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 04:06:28,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 04:06:28,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 04:06:28,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 04:06:28,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 04:06:28,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 04:06:28,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 04:06:28,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 04:06:28,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 04:06:28,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 04:06:28,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 04:06:28,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 04:06:28,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 04:06:28,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 04:06:28,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 04:06:28,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 04:06:28,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 04:06:28,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 04:06:28,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 04:06:28,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 04:06:28,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 04:06:28,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 04:06:28,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 04:06:28,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 04:06:28,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 04:06:28,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 04:06:28,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 04:06:28,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 04:06:28,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2022-12-06 04:06:28,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 04:06:28,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 04:06:28,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 04:06:28,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 04:06:28,830 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 04:06:28,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 04:06:28,831 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 04:06:28,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 04:06:28,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 04:06:28,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 04:06:28,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 04:06:28,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 04:06:28,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 04:06:28,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 04:06:28,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 04:06:28,833 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 04:06:28,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 04:06:28,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 04:06:28,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 04:06:28,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 04:06:28,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 04:06:28,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 04:06:28,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 04:06:28,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 04:06:28,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 04:06:28,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 04:06:28,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 04:06:28,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 04:06:28,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-06 04:06:29,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 04:06:29,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 04:06:29,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 04:06:29,198 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 04:06:29,199 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 04:06:29,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2022-12-06 04:06:30,428 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 04:06:30,713 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 04:06:30,714 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2022-12-06 04:06:30,729 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/094acf277/7e27c054fae14a89843b252ee5bc87d0/FLAGd9639d052 [2022-12-06 04:06:30,753 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/094acf277/7e27c054fae14a89843b252ee5bc87d0 [2022-12-06 04:06:30,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 04:06:30,757 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 04:06:30,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 04:06:30,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 04:06:30,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 04:06:30,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:06:30" (1/1) ... [2022-12-06 04:06:30,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17acc961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:30, skipping insertion in model container [2022-12-06 04:06:30,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:06:30" (1/1) ... [2022-12-06 04:06:30,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 04:06:30,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 04:06:30,945 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-06 04:06:31,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,086 WARN L237 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] [2022-12-06 04:06:31,089 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 04:06:31,110 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 04:06:31,138 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-06 04:06:31,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,163 WARN L237 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] [2022-12-06 04:06:31,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 04:06:31,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 04:06:31,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 04:06:31,201 INFO L208 MainTranslator]: Completed translation [2022-12-06 04:06:31,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31 WrapperNode [2022-12-06 04:06:31,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 04:06:31,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 04:06:31,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 04:06:31,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 04:06:31,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,246 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 119 [2022-12-06 04:06:31,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 04:06:31,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 04:06:31,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 04:06:31,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 04:06:31,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 04:06:31,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 04:06:31,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 04:06:31,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 04:06:31,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (1/1) ... [2022-12-06 04:06:31,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 04:06:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 04:06:31,326 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) [2022-12-06 04:06:31,334 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 [2022-12-06 04:06:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 04:06:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 04:06:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 04:06:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 04:06:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-12-06 04:06:31,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-12-06 04:06:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 04:06:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 04:06:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 04:06:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 04:06:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 04:06:31,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 04:06:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-12-06 04:06:31,363 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-12-06 04:06:31,364 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 04:06:31,468 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 04:06:31,469 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 04:06:31,680 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 04:06:31,726 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 04:06:31,727 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 04:06:31,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:06:31 BoogieIcfgContainer [2022-12-06 04:06:31,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 04:06:31,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 04:06:31,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 04:06:31,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 04:06:31,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:06:30" (1/3) ... [2022-12-06 04:06:31,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f87ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:06:31, skipping insertion in model container [2022-12-06 04:06:31,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:06:31" (2/3) ... [2022-12-06 04:06:31,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f87ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:06:31, skipping insertion in model container [2022-12-06 04:06:31,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:06:31" (3/3) ... [2022-12-06 04:06:31,741 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-12-06 04:06:31,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 04:06:31,763 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 04:06:31,763 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 04:06:31,838 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-06 04:06:31,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 110 transitions, 252 flow [2022-12-06 04:06:31,924 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2022-12-06 04:06:31,925 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-06 04:06:31,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 106 events. 2/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2022-12-06 04:06:31,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 110 transitions, 252 flow [2022-12-06 04:06:31,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 93 transitions, 207 flow [2022-12-06 04:06:31,937 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 04:06:31,956 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 93 transitions, 207 flow [2022-12-06 04:06:31,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 93 transitions, 207 flow [2022-12-06 04:06:31,984 INFO L130 PetriNetUnfolder]: 2/93 cut-off events. [2022-12-06 04:06:31,985 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 04:06:31,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 93 events. 2/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2022-12-06 04:06:31,991 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 93 transitions, 207 flow [2022-12-06 04:06:31,991 INFO L188 LiptonReduction]: Number of co-enabled transitions 2574 [2022-12-06 04:06:35,437 INFO L203 LiptonReduction]: Total number of compositions: 66 [2022-12-06 04:06:35,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 04:06:35,457 INFO L357 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=REPEATED_LIPTON_PN, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c231681, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 04:06:35,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-06 04:06:35,463 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2022-12-06 04:06:35,463 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 04:06:35,463 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 04:06:35,464 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 04:06:35,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 04:06:35,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 04:06:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1290161535, now seen corresponding path program 1 times [2022-12-06 04:06:35,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 04:06:35,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435635448] [2022-12-06 04:06:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 04:06:35,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 04:06:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 04:06:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 04:06:35,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 04:06:35,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435635448] [2022-12-06 04:06:35,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435635448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 04:06:35,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 04:06:35,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 04:06:35,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699221084] [2022-12-06 04:06:35,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 04:06:35,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 04:06:35,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 04:06:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 04:06:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 04:06:35,790 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 43 [2022-12-06 04:06:35,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-12-06 04:06:35,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 04:06:35,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 43 [2022-12-06 04:06:35,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 04:06:38,269 INFO L130 PetriNetUnfolder]: 22597/31285 cut-off events. [2022-12-06 04:06:38,270 INFO L131 PetriNetUnfolder]: For 2892/2892 co-relation queries the response was YES. [2022-12-06 04:06:38,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64097 conditions, 31285 events. 22597/31285 cut-off events. For 2892/2892 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 175899 event pairs, 3815 based on Foata normal form. 0/28703 useless extension candidates. Maximal degree in co-relation 50361. Up to 15761 conditions per place. [2022-12-06 04:06:38,478 INFO L137 encePairwiseOnDemand]: 32/43 looper letters, 161 selfloop transitions, 26 changer transitions 7/196 dead transitions. [2022-12-06 04:06:38,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 196 transitions, 864 flow [2022-12-06 04:06:38,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 04:06:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 04:06:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2022-12-06 04:06:38,493 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2022-12-06 04:06:38,494 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 107 flow. Second operand 9 states and 222 transitions. [2022-12-06 04:06:38,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 196 transitions, 864 flow [2022-12-06 04:06:38,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 196 transitions, 814 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-06 04:06:38,599 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 231 flow [2022-12-06 04:06:38,604 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=231, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2022-12-06 04:06:38,612 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2022-12-06 04:06:38,613 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 04:06:38,613 INFO L89 Accepts]: Start accepts. Operand has 59 places, 66 transitions, 231 flow [2022-12-06 04:06:38,621 INFO L95 Accepts]: Finished accepts. [2022-12-06 04:06:38,621 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 04:06:38,621 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 66 transitions, 231 flow [2022-12-06 04:06:38,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 66 transitions, 231 flow [2022-12-06 04:06:38,653 INFO L130 PetriNetUnfolder]: 75/357 cut-off events. [2022-12-06 04:06:38,654 INFO L131 PetriNetUnfolder]: For 27/30 co-relation queries the response was YES. [2022-12-06 04:06:38,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 357 events. 75/357 cut-off events. For 27/30 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2427 event pairs, 4 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 588. Up to 90 conditions per place. [2022-12-06 04:06:38,660 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 66 transitions, 231 flow [2022-12-06 04:06:38,660 INFO L188 LiptonReduction]: Number of co-enabled transitions 1544 [2022-12-06 04:06:38,705 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 04:06:38,706 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 93 [2022-12-06 04:06:38,707 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 231 flow [2022-12-06 04:06:38,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-12-06 04:06:38,707 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 04:06:38,707 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 04:06:38,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 04:06:38,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 04:06:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 04:06:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1555327116, now seen corresponding path program 1 times [2022-12-06 04:06:38,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 04:06:38,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722108293] [2022-12-06 04:06:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 04:06:38,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 04:06:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 04:06:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 04:06:38,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 04:06:38,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722108293] [2022-12-06 04:06:38,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722108293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 04:06:38,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 04:06:38,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 04:06:38,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171286154] [2022-12-06 04:06:38,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 04:06:38,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 04:06:38,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 04:06:38,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 04:06:38,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 04:06:38,869 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2022-12-06 04:06:38,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-12-06 04:06:38,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 04:06:38,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2022-12-06 04:06:38,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 04:06:39,569 INFO L130 PetriNetUnfolder]: 5485/9161 cut-off events. [2022-12-06 04:06:39,570 INFO L131 PetriNetUnfolder]: For 2628/2966 co-relation queries the response was YES. [2022-12-06 04:06:39,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20631 conditions, 9161 events. 5485/9161 cut-off events. For 2628/2966 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 68159 event pairs, 1806 based on Foata normal form. 838/9247 useless extension candidates. Maximal degree in co-relation 16334. Up to 4045 conditions per place. [2022-12-06 04:06:39,631 INFO L137 encePairwiseOnDemand]: 35/41 looper letters, 50 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2022-12-06 04:06:39,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 88 transitions, 404 flow [2022-12-06 04:06:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 04:06:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 04:06:39,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2022-12-06 04:06:39,635 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7154471544715447 [2022-12-06 04:06:39,635 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 231 flow. Second operand 3 states and 88 transitions. [2022-12-06 04:06:39,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 88 transitions, 404 flow [2022-12-06 04:06:39,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 404 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-06 04:06:39,655 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 247 flow [2022-12-06 04:06:39,656 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2022-12-06 04:06:39,656 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2022-12-06 04:06:39,656 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 04:06:39,657 INFO L89 Accepts]: Start accepts. Operand has 62 places, 66 transitions, 247 flow [2022-12-06 04:06:39,658 INFO L95 Accepts]: Finished accepts. [2022-12-06 04:06:39,658 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 04:06:39,658 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 66 transitions, 247 flow [2022-12-06 04:06:39,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 66 transitions, 247 flow [2022-12-06 04:06:39,709 INFO L130 PetriNetUnfolder]: 122/667 cut-off events. [2022-12-06 04:06:39,711 INFO L131 PetriNetUnfolder]: For 53/56 co-relation queries the response was YES. [2022-12-06 04:06:39,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 667 events. 122/667 cut-off events. For 53/56 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5546 event pairs, 34 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 1181. Up to 142 conditions per place. [2022-12-06 04:06:39,719 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 66 transitions, 247 flow [2022-12-06 04:06:39,719 INFO L188 LiptonReduction]: Number of co-enabled transitions 1426 [2022-12-06 04:06:40,022 INFO L203 LiptonReduction]: Total number of compositions: 2 [2022-12-06 04:06:40,024 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 368 [2022-12-06 04:06:40,024 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 289 flow [2022-12-06 04:06:40,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-12-06 04:06:40,024 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 04:06:40,024 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 04:06:40,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 04:06:40,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 04:06:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 04:06:40,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2048826, now seen corresponding path program 2 times [2022-12-06 04:06:40,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 04:06:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209505040] [2022-12-06 04:06:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 04:06:40,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 04:06:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 04:06:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 04:06:40,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 04:06:40,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209505040] [2022-12-06 04:06:40,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209505040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 04:06:40,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 04:06:40,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 04:06:40,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035617633] [2022-12-06 04:06:40,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 04:06:40,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 04:06:40,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 04:06:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 04:06:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 04:06:40,098 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2022-12-06 04:06:40,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2022-12-06 04:06:40,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 04:06:40,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2022-12-06 04:06:40,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 04:06:40,568 INFO L130 PetriNetUnfolder]: 2312/4514 cut-off events. [2022-12-06 04:06:40,569 INFO L131 PetriNetUnfolder]: For 3531/3640 co-relation queries the response was YES. [2022-12-06 04:06:40,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11778 conditions, 4514 events. 2312/4514 cut-off events. For 3531/3640 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 33760 event pairs, 449 based on Foata normal form. 430/4836 useless extension candidates. Maximal degree in co-relation 10403. Up to 1935 conditions per place. [2022-12-06 04:06:40,586 INFO L137 encePairwiseOnDemand]: 32/55 looper letters, 54 selfloop transitions, 25 changer transitions 24/123 dead transitions. [2022-12-06 04:06:40,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 123 transitions, 694 flow [2022-12-06 04:06:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 04:06:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 04:06:40,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2022-12-06 04:06:40,588 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6681818181818182 [2022-12-06 04:06:40,588 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 289 flow. Second operand 4 states and 147 transitions. [2022-12-06 04:06:40,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 123 transitions, 694 flow [2022-12-06 04:06:40,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 123 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-06 04:06:40,601 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 336 flow [2022-12-06 04:06:40,602 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2022-12-06 04:06:40,603 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2022-12-06 04:06:40,603 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 04:06:40,603 INFO L89 Accepts]: Start accepts. Operand has 64 places, 68 transitions, 336 flow [2022-12-06 04:06:40,605 INFO L95 Accepts]: Finished accepts. [2022-12-06 04:06:40,605 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 04:06:40,605 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 68 transitions, 336 flow [2022-12-06 04:06:40,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 68 transitions, 336 flow [2022-12-06 04:06:40,639 INFO L130 PetriNetUnfolder]: 90/556 cut-off events. [2022-12-06 04:06:40,639 INFO L131 PetriNetUnfolder]: For 178/226 co-relation queries the response was YES. [2022-12-06 04:06:40,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 556 events. 90/556 cut-off events. For 178/226 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4488 event pairs, 14 based on Foata normal form. 1/515 useless extension candidates. Maximal degree in co-relation 1199. Up to 103 conditions per place. [2022-12-06 04:06:40,648 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 68 transitions, 336 flow [2022-12-06 04:06:40,649 INFO L188 LiptonReduction]: Number of co-enabled transitions 1088 [2022-12-06 04:06:40,700 INFO L203 LiptonReduction]: Total number of compositions: 2 [2022-12-06 04:06:40,702 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 99 [2022-12-06 04:06:40,702 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 332 flow [2022-12-06 04:06:40,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2022-12-06 04:06:40,703 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 04:06:40,703 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 04:06:40,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 04:06:40,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 04:06:40,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 04:06:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1529617941, now seen corresponding path program 1 times [2022-12-06 04:06:40,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 04:06:40,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642486480] [2022-12-06 04:06:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 04:06:40,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 04:06:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 04:06:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 04:06:40,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 04:06:40,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642486480] [2022-12-06 04:06:40,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642486480] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 04:06:40,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 04:06:40,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 04:06:40,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395567166] [2022-12-06 04:06:40,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 04:06:40,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 04:06:40,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 04:06:40,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 04:06:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 04:06:40,805 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 52 [2022-12-06 04:06:40,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-12-06 04:06:40,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 04:06:40,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 52 [2022-12-06 04:06:40,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 04:06:41,655 INFO L130 PetriNetUnfolder]: 4435/7624 cut-off events. [2022-12-06 04:06:41,655 INFO L131 PetriNetUnfolder]: For 5706/5706 co-relation queries the response was YES. [2022-12-06 04:06:41,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21554 conditions, 7624 events. 4435/7624 cut-off events. For 5706/5706 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 50188 event pairs, 755 based on Foata normal form. 0/7522 useless extension candidates. Maximal degree in co-relation 19554. Up to 2694 conditions per place. [2022-12-06 04:06:41,693 INFO L137 encePairwiseOnDemand]: 29/52 looper letters, 147 selfloop transitions, 43 changer transitions 35/227 dead transitions. [2022-12-06 04:06:41,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 227 transitions, 1494 flow [2022-12-06 04:06:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 04:06:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 04:06:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2022-12-06 04:06:41,695 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2022-12-06 04:06:41,695 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 332 flow. Second operand 9 states and 219 transitions. [2022-12-06 04:06:41,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 227 transitions, 1494 flow [2022-12-06 04:06:41,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 227 transitions, 1486 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-06 04:06:41,721 INFO L231 Difference]: Finished difference. Result has 75 places, 97 transitions, 715 flow [2022-12-06 04:06:41,721 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=715, PETRI_PLACES=75, PETRI_TRANSITIONS=97} [2022-12-06 04:06:41,722 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2022-12-06 04:06:41,722 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 04:06:41,722 INFO L89 Accepts]: Start accepts. Operand has 75 places, 97 transitions, 715 flow [2022-12-06 04:06:41,723 INFO L95 Accepts]: Finished accepts. [2022-12-06 04:06:41,723 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 04:06:41,723 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 97 transitions, 715 flow [2022-12-06 04:06:41,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 97 transitions, 715 flow [2022-12-06 04:06:41,789 INFO L130 PetriNetUnfolder]: 147/705 cut-off events. [2022-12-06 04:06:41,790 INFO L131 PetriNetUnfolder]: For 700/715 co-relation queries the response was YES. [2022-12-06 04:06:41,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 705 events. 147/705 cut-off events. For 700/715 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5649 event pairs, 18 based on Foata normal form. 1/690 useless extension candidates. Maximal degree in co-relation 2075. Up to 158 conditions per place. [2022-12-06 04:06:41,798 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 97 transitions, 715 flow [2022-12-06 04:06:41,799 INFO L188 LiptonReduction]: Number of co-enabled transitions 1280 [2022-12-06 04:06:41,811 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 04:06:41,812 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 90 [2022-12-06 04:06:41,813 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 97 transitions, 715 flow [2022-12-06 04:06:41,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-12-06 04:06:41,813 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 04:06:41,813 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 04:06:41,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 04:06:41,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 04:06:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 04:06:41,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2042102856, now seen corresponding path program 1 times [2022-12-06 04:06:41,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 04:06:41,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3111513] [2022-12-06 04:06:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 04:06:41,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 04:06:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 04:06:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 04:06:41,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 04:06:41,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3111513] [2022-12-06 04:06:41,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3111513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 04:06:41,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 04:06:41,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 04:06:41,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753296371] [2022-12-06 04:06:41,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 04:06:41,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 04:06:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 04:06:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 04:06:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 04:06:41,868 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 51 [2022-12-06 04:06:41,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 97 transitions, 715 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-06 04:06:41,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 04:06:41,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 51 [2022-12-06 04:06:41,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 04:06:42,666 INFO L130 PetriNetUnfolder]: 4042/7045 cut-off events. [2022-12-06 04:06:42,667 INFO L131 PetriNetUnfolder]: For 8651/8651 co-relation queries the response was YES. [2022-12-06 04:06:42,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22981 conditions, 7045 events. 4042/7045 cut-off events. For 8651/8651 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 46608 event pairs, 910 based on Foata normal form. 70/7115 useless extension candidates. Maximal degree in co-relation 21342. Up to 2957 conditions per place. [2022-12-06 04:06:42,698 INFO L137 encePairwiseOnDemand]: 32/51 looper letters, 127 selfloop transitions, 47 changer transitions 21/197 dead transitions. [2022-12-06 04:06:42,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 197 transitions, 1531 flow [2022-12-06 04:06:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 04:06:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 04:06:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2022-12-06 04:06:42,700 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2022-12-06 04:06:42,700 INFO L175 Difference]: Start difference. First operand has 74 places, 97 transitions, 715 flow. Second operand 7 states and 174 transitions. [2022-12-06 04:06:42,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 197 transitions, 1531 flow [2022-12-06 04:06:42,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 197 transitions, 1529 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-06 04:06:42,754 INFO L231 Difference]: Finished difference. Result has 82 places, 106 transitions, 905 flow [2022-12-06 04:06:42,754 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=905, PETRI_PLACES=82, PETRI_TRANSITIONS=106} [2022-12-06 04:06:42,755 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2022-12-06 04:06:42,755 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 04:06:42,755 INFO L89 Accepts]: Start accepts. Operand has 82 places, 106 transitions, 905 flow [2022-12-06 04:06:42,756 INFO L95 Accepts]: Finished accepts. [2022-12-06 04:06:42,756 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 04:06:42,757 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 106 transitions, 905 flow [2022-12-06 04:06:42,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 106 transitions, 905 flow [2022-12-06 04:06:42,809 INFO L130 PetriNetUnfolder]: 148/747 cut-off events. [2022-12-06 04:06:42,810 INFO L131 PetriNetUnfolder]: For 1043/1080 co-relation queries the response was YES. [2022-12-06 04:06:42,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 747 events. 148/747 cut-off events. For 1043/1080 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6199 event pairs, 18 based on Foata normal form. 15/738 useless extension candidates. Maximal degree in co-relation 2331. Up to 158 conditions per place. [2022-12-06 04:06:42,818 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 106 transitions, 905 flow [2022-12-06 04:06:42,818 INFO L188 LiptonReduction]: Number of co-enabled transitions 1344 [2022-12-06 04:06:42,828 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 04:06:42,829 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 74 [2022-12-06 04:06:42,829 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 106 transitions, 905 flow [2022-12-06 04:06:42,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-06 04:06:42,829 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 04:06:42,829 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 04:06:42,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 04:06:42,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 04:06:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 04:06:42,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2056835470, now seen corresponding path program 1 times [2022-12-06 04:06:42,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 04:06:42,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357241192] [2022-12-06 04:06:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 04:06:42,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 04:06:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 04:06:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 04:06:42,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 04:06:42,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357241192] [2022-12-06 04:06:42,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357241192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 04:06:42,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 04:06:42,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 04:06:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106478453] [2022-12-06 04:06:42,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 04:06:42,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 04:06:42,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 04:06:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 04:06:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 04:06:42,878 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 51 [2022-12-06 04:06:42,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 106 transitions, 905 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-06 04:06:42,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 04:06:42,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 51 [2022-12-06 04:06:42,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 04:06:43,666 INFO L130 PetriNetUnfolder]: 3932/6890 cut-off events. [2022-12-06 04:06:43,666 INFO L131 PetriNetUnfolder]: For 11448/11448 co-relation queries the response was YES. [2022-12-06 04:06:43,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23694 conditions, 6890 events. 3932/6890 cut-off events. For 11448/11448 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 46243 event pairs, 942 based on Foata normal form. 78/6968 useless extension candidates. Maximal degree in co-relation 22032. Up to 3069 conditions per place. [2022-12-06 04:06:43,698 INFO L137 encePairwiseOnDemand]: 32/51 looper letters, 136 selfloop transitions, 49 changer transitions 14/201 dead transitions. [2022-12-06 04:06:43,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 201 transitions, 1736 flow [2022-12-06 04:06:43,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 04:06:43,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 04:06:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2022-12-06 04:06:43,700 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44537815126050423 [2022-12-06 04:06:43,700 INFO L175 Difference]: Start difference. First operand has 82 places, 106 transitions, 905 flow. Second operand 7 states and 159 transitions. [2022-12-06 04:06:43,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 201 transitions, 1736 flow [2022-12-06 04:06:43,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 201 transitions, 1712 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-06 04:06:43,767 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 1083 flow [2022-12-06 04:06:43,767 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1083, PETRI_PLACES=89, PETRI_TRANSITIONS=115} [2022-12-06 04:06:43,768 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2022-12-06 04:06:43,768 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 04:06:43,768 INFO L89 Accepts]: Start accepts. Operand has 89 places, 115 transitions, 1083 flow [2022-12-06 04:06:43,770 INFO L95 Accepts]: Finished accepts. [2022-12-06 04:06:43,770 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 04:06:43,770 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 115 transitions, 1083 flow [2022-12-06 04:06:43,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 115 transitions, 1083 flow [2022-12-06 04:06:43,825 INFO L130 PetriNetUnfolder]: 144/755 cut-off events. [2022-12-06 04:06:43,825 INFO L131 PetriNetUnfolder]: For 1378/1419 co-relation queries the response was YES. [2022-12-06 04:06:43,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2534 conditions, 755 events. 144/755 cut-off events. For 1378/1419 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6324 event pairs, 16 based on Foata normal form. 19/746 useless extension candidates. Maximal degree in co-relation 2494. Up to 150 conditions per place. [2022-12-06 04:06:43,834 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 115 transitions, 1083 flow [2022-12-06 04:06:43,834 INFO L188 LiptonReduction]: Number of co-enabled transitions 1404 [2022-12-06 04:06:43,841 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 04:06:43,842 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 74 [2022-12-06 04:06:43,842 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 1083 flow [2022-12-06 04:06:43,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-12-06 04:06:43,842 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 04:06:43,842 INFO L213 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] [2022-12-06 04:06:43,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 04:06:43,843 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 04:06:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 04:06:43,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2030303597, now seen corresponding path program 1 times [2022-12-06 04:06:43,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 04:06:43,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774512392] [2022-12-06 04:06:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 04:06:43,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 04:06:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 04:06:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 04:06:43,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 04:06:43,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774512392] [2022-12-06 04:06:43,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774512392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 04:06:43,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 04:06:43,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 04:06:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73547220] [2022-12-06 04:06:43,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 04:06:43,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 04:06:43,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 04:06:43,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 04:06:43,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-06 04:06:43,936 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2022-12-06 04:06:43,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 115 transitions, 1083 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-12-06 04:06:43,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 04:06:43,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2022-12-06 04:06:43,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 04:06:44,411 INFO L130 PetriNetUnfolder]: 1748/4008 cut-off events. [2022-12-06 04:06:44,411 INFO L131 PetriNetUnfolder]: For 10821/11048 co-relation queries the response was YES. [2022-12-06 04:06:44,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14602 conditions, 4008 events. 1748/4008 cut-off events. For 10821/11048 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 33205 event pairs, 380 based on Foata normal form. 278/4252 useless extension candidates. Maximal degree in co-relation 13687. Up to 1293 conditions per place. [2022-12-06 04:06:44,434 INFO L137 encePairwiseOnDemand]: 43/51 looper letters, 104 selfloop transitions, 11 changer transitions 52/188 dead transitions. [2022-12-06 04:06:44,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 188 transitions, 1687 flow [2022-12-06 04:06:44,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 04:06:44,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 04:06:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2022-12-06 04:06:44,436 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2022-12-06 04:06:44,436 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 1083 flow. Second operand 9 states and 187 transitions. [2022-12-06 04:06:44,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 188 transitions, 1687 flow [2022-12-06 04:06:44,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 188 transitions, 1649 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-06 04:06:44,483 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 972 flow [2022-12-06 04:06:44,483 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=972, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2022-12-06 04:06:44,484 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2022-12-06 04:06:44,484 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 04:06:44,484 INFO L89 Accepts]: Start accepts. Operand has 98 places, 107 transitions, 972 flow [2022-12-06 04:06:44,486 INFO L95 Accepts]: Finished accepts. [2022-12-06 04:06:44,486 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 04:06:44,486 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 107 transitions, 972 flow [2022-12-06 04:06:44,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 107 transitions, 972 flow [2022-12-06 04:06:44,531 INFO L130 PetriNetUnfolder]: 108/605 cut-off events. [2022-12-06 04:06:44,531 INFO L131 PetriNetUnfolder]: For 1255/1304 co-relation queries the response was YES. [2022-12-06 04:06:44,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 605 events. 108/605 cut-off events. For 1255/1304 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4759 event pairs, 0 based on Foata normal form. 16/613 useless extension candidates. Maximal degree in co-relation 2202. Up to 125 conditions per place. [2022-12-06 04:06:44,538 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 107 transitions, 972 flow [2022-12-06 04:06:44,539 INFO L188 LiptonReduction]: Number of co-enabled transitions 1224 [2022-12-06 04:06:44,545 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [219] L728-->L731: Formula: (= |v_readerThread1of1ForFork2_~l~0#1_5| v_~y~0_1) InVars {readerThread1of1ForFork2_~l~0#1=|v_readerThread1of1ForFork2_~l~0#1_5|} OutVars{~y~0=v_~y~0_1, readerThread1of1ForFork2_~l~0#1=|v_readerThread1of1ForFork2_~l~0#1_5|} AuxVars[] AssignedVars[~y~0] and [356] L714-1-->writerEXIT: Formula: (and (= 3 v_~x~0_151) (= v_~w~0_280 0) (= |v_writerThread1of1ForFork1_#res#1.offset_31| 0) (= |v_writerThread1of1ForFork1_#res#1.base_31| 0)) InVars {} OutVars{~w~0=v_~w~0_280, writerThread1of1ForFork1_#res#1.base=|v_writerThread1of1ForFork1_#res#1.base_31|, writerThread1of1ForFork1_#res#1.offset=|v_writerThread1of1ForFork1_#res#1.offset_31|, ~x~0=v_~x~0_151} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork1_#res#1.base, writerThread1of1ForFork1_#res#1.offset, ~x~0] [2022-12-06 04:06:44,568 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [219] L728-->L731: Formula: (= |v_readerThread1of1ForFork2_~l~0#1_5| v_~y~0_1) InVars {readerThread1of1ForFork2_~l~0#1=|v_readerThread1of1ForFork2_~l~0#1_5|} OutVars{~y~0=v_~y~0_1, readerThread1of1ForFork2_~l~0#1=|v_readerThread1of1ForFork2_~l~0#1_5|} AuxVars[] AssignedVars[~y~0] and [349] L714-1-->writerEXIT: Formula: (and (= |v_writerThread1of1ForFork0_#res#1.offset_23| 0) (= v_~w~0_264 0) (= |v_writerThread1of1ForFork0_#res#1.base_23| 0) (= 3 v_~x~0_134)) InVars {} OutVars{~w~0=v_~w~0_264, writerThread1of1ForFork0_#res#1.base=|v_writerThread1of1ForFork0_#res#1.base_23|, ~x~0=v_~x~0_134, writerThread1of1ForFork0_#res#1.offset=|v_writerThread1of1ForFork0_#res#1.offset_23|} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_#res#1.base, ~x~0, writerThread1of1ForFork0_#res#1.offset] [2022-12-06 04:06:44,634 INFO L203 LiptonReduction]: Total number of compositions: 2 [2022-12-06 04:06:44,635 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 151 [2022-12-06 04:06:44,635 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 989 flow [2022-12-06 04:06:44,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-12-06 04:06:44,635 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 04:06:44,635 INFO L213 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] [2022-12-06 04:06:44,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 04:06:44,635 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 04:06:44,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 04:06:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1266506137, now seen corresponding path program 2 times [2022-12-06 04:06:44,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 04:06:44,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361054024] [2022-12-06 04:06:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 04:06:44,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 04:06:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 04:06:44,651 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-06 04:06:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 04:06:44,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-06 04:06:44,695 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-06 04:06:44,696 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-06 04:06:44,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-06 04:06:44,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-06 04:06:44,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-06 04:06:44,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-06 04:06:44,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-06 04:06:44,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-06 04:06:44,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 04:06:44,700 INFO L458 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2022-12-06 04:06:44,705 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 04:06:44,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 04:06:44,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:06:44 BasicIcfg [2022-12-06 04:06:44,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 04:06:44,756 INFO L158 Benchmark]: Toolchain (without parser) took 13999.62ms. Allocated memory was 182.5MB in the beginning and 857.7MB in the end (delta: 675.3MB). Free memory was 157.7MB in the beginning and 245.8MB in the end (delta: -88.1MB). Peak memory consumption was 587.7MB. Max. memory is 8.0GB. [2022-12-06 04:06:44,756 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 04:06:44,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.20ms. Allocated memory is still 182.5MB. Free memory was 157.7MB in the beginning and 136.2MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-06 04:06:44,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.91ms. Allocated memory is still 182.5MB. Free memory was 136.2MB in the beginning and 133.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-06 04:06:44,757 INFO L158 Benchmark]: Boogie Preprocessor took 40.87ms. Allocated memory is still 182.5MB. Free memory was 133.6MB in the beginning and 132.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 04:06:44,757 INFO L158 Benchmark]: RCFGBuilder took 440.28ms. Allocated memory is still 182.5MB. Free memory was 132.5MB in the beginning and 116.3MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-06 04:06:44,758 INFO L158 Benchmark]: TraceAbstraction took 13020.11ms. Allocated memory was 182.5MB in the beginning and 857.7MB in the end (delta: 675.3MB). Free memory was 115.0MB in the beginning and 245.8MB in the end (delta: -130.8MB). Peak memory consumption was 544.7MB. Max. memory is 8.0GB. [2022-12-06 04:06:44,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 443.20ms. Allocated memory is still 182.5MB. Free memory was 157.7MB in the beginning and 136.2MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.91ms. Allocated memory is still 182.5MB. Free memory was 136.2MB in the beginning and 133.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.87ms. Allocated memory is still 182.5MB. Free memory was 133.6MB in the beginning and 132.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 440.28ms. Allocated memory is still 182.5MB. Free memory was 132.5MB in the beginning and 116.3MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 13020.11ms. Allocated memory was 182.5MB in the beginning and 857.7MB in the end (delta: 675.3MB). Free memory was 115.0MB in the beginning and 245.8MB in the end (delta: -130.8MB). Peak memory consumption was 544.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 104 PlacesBefore, 54 PlacesAfterwards, 93 TransitionsBefore, 43 TransitionsAfterwards, 2574 CoEnabledTransitionPairs, 5 FixpointIterations, 0 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 35 ConcurrentYvCompositions, 0 ChoiceCompositions, 66 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3372, independent: 3178, independent conditional: 3178, independent unconditional: 0, dependent: 194, dependent conditional: 194, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3372, independent: 3178, independent conditional: 0, independent unconditional: 3178, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3372, independent: 3178, independent conditional: 0, independent unconditional: 3178, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3372, independent: 3178, independent conditional: 0, independent unconditional: 3178, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1708, independent: 1663, independent conditional: 0, independent unconditional: 1663, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1708, independent: 1615, independent conditional: 0, independent unconditional: 1615, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 93, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 127, independent: 68, independent conditional: 0, independent unconditional: 68, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3372, independent: 1515, independent conditional: 0, independent unconditional: 1515, dependent: 149, dependent conditional: 0, dependent unconditional: 149, unknown: 1708, unknown conditional: 0, unknown unconditional: 1708] , Statistics on independence cache: Total cache size (in pairs): 2983, Positive cache size: 2938, Positive conditional cache size: 0, Positive unconditional cache size: 2938, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 59 PlacesBefore, 59 PlacesAfterwards, 66 TransitionsBefore, 66 TransitionsAfterwards, 1544 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 524, independent: 475, independent conditional: 475, independent unconditional: 0, dependent: 49, dependent conditional: 49, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 524, independent: 475, independent conditional: 178, independent unconditional: 297, dependent: 49, dependent conditional: 19, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 524, independent: 475, independent conditional: 39, independent unconditional: 436, dependent: 49, dependent conditional: 19, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 524, independent: 475, independent conditional: 39, independent unconditional: 436, dependent: 49, dependent conditional: 19, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 113, independent: 97, independent conditional: 5, independent unconditional: 92, dependent: 16, dependent conditional: 8, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 113, independent: 93, independent conditional: 0, independent unconditional: 93, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 16, dependent conditional: 8, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 30, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 21, dependent conditional: 7, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 524, independent: 378, independent conditional: 34, independent unconditional: 344, dependent: 33, dependent conditional: 11, dependent unconditional: 22, unknown: 113, unknown conditional: 13, unknown unconditional: 100] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 97, Positive conditional cache size: 5, Positive unconditional cache size: 92, Negative cache size: 16, Negative conditional cache size: 8, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 139, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 62 PlacesBefore, 62 PlacesAfterwards, 66 TransitionsBefore, 66 TransitionsAfterwards, 1426 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1395, independent: 1321, independent conditional: 1321, independent unconditional: 0, dependent: 74, dependent conditional: 74, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1395, independent: 1321, independent conditional: 724, independent unconditional: 597, dependent: 74, dependent conditional: 28, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1395, independent: 1321, independent conditional: 186, independent unconditional: 1135, dependent: 74, dependent conditional: 1, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1395, independent: 1321, independent conditional: 186, independent unconditional: 1135, dependent: 74, dependent conditional: 1, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 101, independent: 91, independent conditional: 8, independent unconditional: 83, dependent: 10, dependent conditional: 1, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 101, independent: 91, independent conditional: 0, independent unconditional: 91, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 1, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 1, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1395, independent: 1230, independent conditional: 178, independent unconditional: 1052, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 101, unknown conditional: 9, unknown unconditional: 92] , Statistics on independence cache: Total cache size (in pairs): 242, Positive cache size: 216, Positive conditional cache size: 13, Positive unconditional cache size: 203, Negative cache size: 26, Negative conditional cache size: 9, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 565, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 63 PlacesBefore, 61 PlacesAfterwards, 68 TransitionsBefore, 66 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 598, independent: 560, independent conditional: 560, independent unconditional: 0, dependent: 38, dependent conditional: 38, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 598, independent: 560, independent conditional: 146, independent unconditional: 414, dependent: 38, dependent conditional: 34, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 598, independent: 560, independent conditional: 134, independent unconditional: 426, dependent: 38, dependent conditional: 8, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 598, independent: 560, independent conditional: 134, independent unconditional: 426, dependent: 38, dependent conditional: 8, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 65, independent: 65, independent conditional: 16, independent unconditional: 49, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 65, independent: 65, independent conditional: 0, independent unconditional: 65, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 598, independent: 495, independent conditional: 118, independent unconditional: 377, dependent: 38, dependent conditional: 8, dependent unconditional: 30, unknown: 65, unknown conditional: 16, unknown unconditional: 49] , Statistics on independence cache: Total cache size (in pairs): 311, Positive cache size: 285, Positive conditional cache size: 29, Positive unconditional cache size: 256, Negative cache size: 26, Negative conditional cache size: 9, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 38, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 74 PlacesBefore, 74 PlacesAfterwards, 97 TransitionsBefore, 97 TransitionsAfterwards, 1280 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 36, independent: 30, independent conditional: 30, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 36, independent: 30, independent conditional: 9, independent unconditional: 21, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 48, independent: 30, independent conditional: 6, independent unconditional: 24, dependent: 18, dependent conditional: 12, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 48, independent: 30, independent conditional: 6, independent unconditional: 24, dependent: 18, dependent conditional: 12, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, independent: 3, independent conditional: 1, independent unconditional: 2, dependent: 6, dependent conditional: 4, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 6, dependent conditional: 4, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 6, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 48, independent: 27, independent conditional: 5, independent unconditional: 22, dependent: 12, dependent conditional: 8, dependent unconditional: 4, unknown: 9, unknown conditional: 5, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 320, Positive cache size: 288, Positive conditional cache size: 30, Positive unconditional cache size: 258, Negative cache size: 32, Negative conditional cache size: 13, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 9, Maximal queried relation: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 82 PlacesBefore, 82 PlacesAfterwards, 106 TransitionsBefore, 106 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, independent: 3, independent conditional: 3, independent unconditional: 0, dependent: 7, dependent conditional: 7, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 10, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 7, dependent conditional: 7, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 31, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 28, dependent conditional: 21, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 31, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 28, dependent conditional: 21, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 4, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 4, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 4, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 31, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 23, dependent conditional: 17, dependent unconditional: 6, unknown: 5, unknown conditional: 4, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 325, Positive cache size: 288, Positive conditional cache size: 30, Positive unconditional cache size: 258, Negative cache size: 37, Negative conditional cache size: 17, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 7, Maximal queried relation: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 89 PlacesBefore, 89 PlacesAfterwards, 115 TransitionsBefore, 115 TransitionsAfterwards, 1404 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 52, independent: 44, independent conditional: 44, independent unconditional: 0, dependent: 8, dependent conditional: 8, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 52, independent: 44, independent conditional: 12, independent unconditional: 32, dependent: 8, dependent conditional: 8, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 64, independent: 44, independent conditional: 12, independent unconditional: 32, dependent: 20, dependent conditional: 12, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 64, independent: 44, independent conditional: 12, independent unconditional: 32, dependent: 20, dependent conditional: 12, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, independent: 1, independent conditional: 1, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 64, independent: 43, independent conditional: 11, independent unconditional: 32, dependent: 19, dependent conditional: 11, dependent unconditional: 8, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 327, Positive cache size: 289, Positive conditional cache size: 31, Positive unconditional cache size: 258, Negative cache size: 38, Negative conditional cache size: 18, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 8, Maximal queried relation: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 93 PlacesBefore, 93 PlacesAfterwards, 107 TransitionsBefore, 107 TransitionsAfterwards, 1224 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 93, independent: 81, independent conditional: 81, independent unconditional: 0, dependent: 12, dependent conditional: 12, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 93, independent: 81, independent conditional: 53, independent unconditional: 28, dependent: 12, dependent conditional: 12, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 129, independent: 81, independent conditional: 29, independent unconditional: 52, dependent: 48, dependent conditional: 36, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 129, independent: 81, independent conditional: 29, independent unconditional: 52, dependent: 48, dependent conditional: 36, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 31, independent: 23, independent conditional: 11, independent unconditional: 12, dependent: 8, dependent conditional: 6, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 31, independent: 23, independent conditional: 0, independent unconditional: 23, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 6, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 7, dependent conditional: 5, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 129, independent: 58, independent conditional: 18, independent unconditional: 40, dependent: 40, dependent conditional: 30, dependent unconditional: 10, unknown: 31, unknown conditional: 17, unknown unconditional: 14] , Statistics on independence cache: Total cache size (in pairs): 360, Positive cache size: 314, Positive conditional cache size: 42, Positive unconditional cache size: 272, Negative cache size: 46, Negative conditional cache size: 24, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 36, Maximal queried relation: 3 - 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; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [pthread_create(&t1, 0, writer, 0)=-2, r=0, t1={5:0}, t2={7:0}, t3={6:0}, t4={8:0}, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [pthread_create(&t2, 0, reader, 0)=-1, r=0, t1={5:0}, t2={7:0}, t3={6:0}, t4={8:0}, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [pthread_create(&t3, 0, writer, 0)=0, r=0, t1={5:0}, t2={7:0}, t3={6:0}, t4={8:0}, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [pthread_create(&t4, 0, reader, 0)=1, r=0, t1={5:0}, t2={7:0}, t3={6:0}, t4={8:0}, w=0, x=0, y=0] [L724] 2 int l; [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)) [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; [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() [L743] 2 r = l [L745] 2 return 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() [L727] 4 l = x VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L730] 4 y = l VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L733] 4 int ly = y; VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L716] 1 x = 3 [L719] 1 w = 0 [L721] 1 return 0; [L736] 4 int lx = x; [L738] COND TRUE 4 !(ly == lx) [L738] 4 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, 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: 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. - 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 135 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: 12.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 610 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 610 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1740 IncrementalHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 33 mSDtfsCounter, 1740 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1083occurred in iteration=6, InterpolantAutomatonStates: 48, 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, 0.5s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2022-12-06 04:06:44,791 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...