/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-RepeatedSemanticLbeWithDisjunctivePredicates.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 06:16:04,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 06:16:04,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 06:16:04,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 06:16:04,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 06:16:04,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 06:16:04,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 06:16:04,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 06:16:04,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 06:16:04,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 06:16:04,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 06:16:04,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 06:16:04,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 06:16:04,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 06:16:04,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 06:16:04,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 06:16:04,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 06:16:04,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 06:16:04,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 06:16:04,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 06:16:04,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 06:16:04,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 06:16:04,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 06:16:04,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 06:16:04,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 06:16:04,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 06:16:04,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 06:16:04,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 06:16:04,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 06:16:04,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 06:16:04,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 06:16:04,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 06:16:04,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 06:16:04,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 06:16:04,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 06:16:04,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 06:16:04,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 06:16:04,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 06:16:04,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 06:16:04,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 06:16:04,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 06:16:04,162 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-06 06:16:04,186 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 06:16:04,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 06:16:04,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 06:16:04,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 06:16:04,188 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 06:16:04,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 06:16:04,188 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 06:16:04,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 06:16:04,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 06:16:04,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 06:16:04,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 06:16:04,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 06:16:04,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 06:16:04,190 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 06:16:04,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 06:16:04,190 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 06:16:04,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 06:16:04,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 06:16:04,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 06:16:04,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 06:16:04,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 06:16:04,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 06:16:04,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 06:16:04,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 06:16:04,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 06:16:04,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 06:16:04,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 06:16:04,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 06:16:04,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-06 06:16:04,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 06:16:04,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 06:16:04,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 06:16:04,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 06:16:04,446 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 06:16:04,447 INFO L432 ainManager$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 06:16:05,382 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 06:16:05,577 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 06:16:05,578 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2022-12-06 06:16:05,587 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68fe7be6/db22967f97fc46e897329696be739f78/FLAG8c0c568dd [2022-12-06 06:16:05,600 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68fe7be6/db22967f97fc46e897329696be739f78 [2022-12-06 06:16:05,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 06:16:05,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 06:16:05,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 06:16:05,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 06:16:05,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 06:16:05,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:16:05" (1/1) ... [2022-12-06 06:16:05,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57985ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:05, skipping insertion in model container [2022-12-06 06:16:05,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:16:05" (1/1) ... [2022-12-06 06:16:05,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 06:16:05,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 06:16:05,781 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-06 06:16:05,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,910 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,916 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 06:16:05,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 06:16:05,939 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 06:16:05,967 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-06 06:16:05,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,986 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,987 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,987 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,987 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,987 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,987 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,989 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,989 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,989 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 06:16:05,989 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:16:05,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:16:05,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 06:16:06,032 INFO L208 MainTranslator]: Completed translation [2022-12-06 06:16:06,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06 WrapperNode [2022-12-06 06:16:06,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 06:16:06,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 06:16:06,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 06:16:06,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 06:16:06,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,096 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 119 [2022-12-06 06:16:06,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 06:16:06,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 06:16:06,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 06:16:06,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 06:16:06,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 06:16:06,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 06:16:06,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 06:16:06,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 06:16:06,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (1/1) ... [2022-12-06 06:16:06,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 06:16:06,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 06:16:06,170 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 06:16:06,178 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 06:16:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 06:16:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 06:16:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 06:16:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 06:16:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-12-06 06:16:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-12-06 06:16:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 06:16:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 06:16:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 06:16:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 06:16:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 06:16:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 06:16:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-12-06 06:16:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-12-06 06:16:06,200 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 06:16:06,306 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 06:16:06,307 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 06:16:06,472 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 06:16:06,506 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 06:16:06,507 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 06:16:06,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:16:06 BoogieIcfgContainer [2022-12-06 06:16:06,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 06:16:06,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 06:16:06,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 06:16:06,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 06:16:06,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:16:05" (1/3) ... [2022-12-06 06:16:06,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f72d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:16:06, skipping insertion in model container [2022-12-06 06:16:06,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:06" (2/3) ... [2022-12-06 06:16:06,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f72d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:16:06, skipping insertion in model container [2022-12-06 06:16:06,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:16:06" (3/3) ... [2022-12-06 06:16:06,518 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-12-06 06:16:06,531 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 06:16:06,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 06:16:06,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 06:16:06,610 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-06 06:16:06,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 110 transitions, 252 flow [2022-12-06 06:16:06,722 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2022-12-06 06:16:06,722 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-06 06:16:06,726 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 06:16:06,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 110 transitions, 252 flow [2022-12-06 06:16:06,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 93 transitions, 207 flow [2022-12-06 06:16:06,732 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:16:06,756 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 93 transitions, 207 flow [2022-12-06 06:16:06,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 93 transitions, 207 flow [2022-12-06 06:16:06,793 INFO L130 PetriNetUnfolder]: 2/93 cut-off events. [2022-12-06 06:16:06,793 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 06:16:06,794 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 06:16:06,797 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 93 transitions, 207 flow [2022-12-06 06:16:06,798 INFO L188 LiptonReduction]: Number of co-enabled transitions 2574 [2022-12-06 06:16:09,738 INFO L203 LiptonReduction]: Total number of compositions: 66 [2022-12-06 06:16:09,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 06:16:09,760 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;@7e124b66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 06:16:09,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-06 06:16:09,766 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2022-12-06 06:16:09,766 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 06:16:09,766 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:16:09,767 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:16:09,767 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 06:16:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:16:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1290161535, now seen corresponding path program 1 times [2022-12-06 06:16:09,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:16:09,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379181248] [2022-12-06 06:16:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:16:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:16:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:16:09,969 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 06:16:09,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:16:09,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379181248] [2022-12-06 06:16:09,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379181248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:16:09,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:16:09,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 06:16:09,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670462646] [2022-12-06 06:16:09,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:16:09,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 06:16:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:16:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 06:16:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 06:16:09,997 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 43 [2022-12-06 06:16:09,998 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 06:16:09,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:16:09,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 43 [2022-12-06 06:16:09,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:16:11,884 INFO L130 PetriNetUnfolder]: 22597/31285 cut-off events. [2022-12-06 06:16:11,884 INFO L131 PetriNetUnfolder]: For 2892/2892 co-relation queries the response was YES. [2022-12-06 06:16:11,939 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 06:16:12,036 INFO L137 encePairwiseOnDemand]: 32/43 looper letters, 161 selfloop transitions, 26 changer transitions 7/196 dead transitions. [2022-12-06 06:16:12,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 196 transitions, 864 flow [2022-12-06 06:16:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 06:16:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 06:16:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2022-12-06 06:16:12,049 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2022-12-06 06:16:12,091 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 107 flow. Second operand 9 states and 222 transitions. [2022-12-06 06:16:12,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 196 transitions, 864 flow [2022-12-06 06:16:12,144 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 06:16:12,147 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 231 flow [2022-12-06 06:16:12,151 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 06:16:12,157 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2022-12-06 06:16:12,158 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:16:12,158 INFO L89 Accepts]: Start accepts. Operand has 59 places, 66 transitions, 231 flow [2022-12-06 06:16:12,161 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:16:12,161 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:16:12,162 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 66 transitions, 231 flow [2022-12-06 06:16:12,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 66 transitions, 231 flow [2022-12-06 06:16:12,180 INFO L130 PetriNetUnfolder]: 75/357 cut-off events. [2022-12-06 06:16:12,181 INFO L131 PetriNetUnfolder]: For 27/30 co-relation queries the response was YES. [2022-12-06 06:16:12,182 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 06:16:12,185 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 66 transitions, 231 flow [2022-12-06 06:16:12,185 INFO L188 LiptonReduction]: Number of co-enabled transitions 1544 [2022-12-06 06:16:12,213 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 06:16:12,214 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 56 [2022-12-06 06:16:12,214 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 231 flow [2022-12-06 06:16:12,214 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 06:16:12,214 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:16:12,214 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:16:12,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 06:16:12,215 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 06:16:12,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:16:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1555327116, now seen corresponding path program 1 times [2022-12-06 06:16:12,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:16:12,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713847602] [2022-12-06 06:16:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:16:12,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:16:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:16:12,382 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 06:16:12,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:16:12,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713847602] [2022-12-06 06:16:12,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713847602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:16:12,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:16:12,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 06:16:12,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254090646] [2022-12-06 06:16:12,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:16:12,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 06:16:12,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:16:12,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 06:16:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 06:16:12,384 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2022-12-06 06:16:12,384 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 06:16:12,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:16:12,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2022-12-06 06:16:12,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:16:13,225 INFO L130 PetriNetUnfolder]: 5485/9161 cut-off events. [2022-12-06 06:16:13,225 INFO L131 PetriNetUnfolder]: For 2628/2966 co-relation queries the response was YES. [2022-12-06 06:16:13,243 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 06:16:13,271 INFO L137 encePairwiseOnDemand]: 35/41 looper letters, 50 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2022-12-06 06:16:13,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 88 transitions, 404 flow [2022-12-06 06:16:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 06:16:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 06:16:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2022-12-06 06:16:13,275 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7154471544715447 [2022-12-06 06:16:13,275 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 231 flow. Second operand 3 states and 88 transitions. [2022-12-06 06:16:13,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 88 transitions, 404 flow [2022-12-06 06:16:13,290 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 06:16:13,292 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 247 flow [2022-12-06 06:16:13,292 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 06:16:13,292 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2022-12-06 06:16:13,293 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:16:13,293 INFO L89 Accepts]: Start accepts. Operand has 62 places, 66 transitions, 247 flow [2022-12-06 06:16:13,294 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:16:13,294 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:16:13,294 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 66 transitions, 247 flow [2022-12-06 06:16:13,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 66 transitions, 247 flow [2022-12-06 06:16:13,330 INFO L130 PetriNetUnfolder]: 122/667 cut-off events. [2022-12-06 06:16:13,330 INFO L131 PetriNetUnfolder]: For 53/56 co-relation queries the response was YES. [2022-12-06 06:16:13,332 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 06:16:13,336 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 66 transitions, 247 flow [2022-12-06 06:16:13,337 INFO L188 LiptonReduction]: Number of co-enabled transitions 1426 [2022-12-06 06:16:13,619 INFO L203 LiptonReduction]: Total number of compositions: 2 [2022-12-06 06:16:13,620 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 327 [2022-12-06 06:16:13,620 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 289 flow [2022-12-06 06:16:13,620 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 06:16:13,620 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:16:13,620 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:16:13,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 06:16:13,620 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 06:16:13,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:16:13,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2048826, now seen corresponding path program 2 times [2022-12-06 06:16:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:16:13,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355716544] [2022-12-06 06:16:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:16:13,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:16:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:16:13,712 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 06:16:13,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:16:13,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355716544] [2022-12-06 06:16:13,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355716544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:16:13,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:16:13,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 06:16:13,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100867888] [2022-12-06 06:16:13,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:16:13,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 06:16:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:16:13,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 06:16:13,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 06:16:13,714 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2022-12-06 06:16:13,714 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 06:16:13,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:16:13,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2022-12-06 06:16:13,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:16:14,114 INFO L130 PetriNetUnfolder]: 2312/4514 cut-off events. [2022-12-06 06:16:14,114 INFO L131 PetriNetUnfolder]: For 3531/3640 co-relation queries the response was YES. [2022-12-06 06:16:14,121 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 06:16:14,127 INFO L137 encePairwiseOnDemand]: 32/55 looper letters, 54 selfloop transitions, 25 changer transitions 24/123 dead transitions. [2022-12-06 06:16:14,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 123 transitions, 694 flow [2022-12-06 06:16:14,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 06:16:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 06:16:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2022-12-06 06:16:14,129 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6681818181818182 [2022-12-06 06:16:14,129 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 289 flow. Second operand 4 states and 147 transitions. [2022-12-06 06:16:14,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 123 transitions, 694 flow [2022-12-06 06:16:14,136 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 06:16:14,137 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 336 flow [2022-12-06 06:16:14,137 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 06:16:14,138 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2022-12-06 06:16:14,138 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:16:14,138 INFO L89 Accepts]: Start accepts. Operand has 64 places, 68 transitions, 336 flow [2022-12-06 06:16:14,139 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:16:14,139 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:16:14,139 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 68 transitions, 336 flow [2022-12-06 06:16:14,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 68 transitions, 336 flow [2022-12-06 06:16:14,161 INFO L130 PetriNetUnfolder]: 90/556 cut-off events. [2022-12-06 06:16:14,161 INFO L131 PetriNetUnfolder]: For 178/226 co-relation queries the response was YES. [2022-12-06 06:16:14,162 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 06:16:14,165 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 68 transitions, 336 flow [2022-12-06 06:16:14,165 INFO L188 LiptonReduction]: Number of co-enabled transitions 1088 [2022-12-06 06:16:14,201 INFO L203 LiptonReduction]: Total number of compositions: 2 [2022-12-06 06:16:14,202 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 64 [2022-12-06 06:16:14,202 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 332 flow [2022-12-06 06:16:14,203 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 06:16:14,203 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:16:14,203 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:16:14,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 06:16:14,203 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 06:16:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:16:14,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1529617941, now seen corresponding path program 1 times [2022-12-06 06:16:14,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:16:14,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529634677] [2022-12-06 06:16:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:16:14,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:16:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:16:14,239 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 06:16:14,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:16:14,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529634677] [2022-12-06 06:16:14,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529634677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:16:14,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:16:14,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 06:16:14,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923041748] [2022-12-06 06:16:14,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:16:14,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 06:16:14,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:16:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 06:16:14,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 06:16:14,241 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 52 [2022-12-06 06:16:14,241 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 06:16:14,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:16:14,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 52 [2022-12-06 06:16:14,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:16:14,835 INFO L130 PetriNetUnfolder]: 4435/7624 cut-off events. [2022-12-06 06:16:14,835 INFO L131 PetriNetUnfolder]: For 5706/5706 co-relation queries the response was YES. [2022-12-06 06:16:14,847 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 06:16:14,860 INFO L137 encePairwiseOnDemand]: 29/52 looper letters, 147 selfloop transitions, 43 changer transitions 35/227 dead transitions. [2022-12-06 06:16:14,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 227 transitions, 1494 flow [2022-12-06 06:16:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 06:16:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 06:16:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2022-12-06 06:16:14,861 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2022-12-06 06:16:14,862 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 332 flow. Second operand 9 states and 219 transitions. [2022-12-06 06:16:14,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 227 transitions, 1494 flow [2022-12-06 06:16:14,876 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 06:16:14,878 INFO L231 Difference]: Finished difference. Result has 75 places, 97 transitions, 715 flow [2022-12-06 06:16:14,879 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 06:16:14,879 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2022-12-06 06:16:14,879 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:16:14,879 INFO L89 Accepts]: Start accepts. Operand has 75 places, 97 transitions, 715 flow [2022-12-06 06:16:14,880 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:16:14,880 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:16:14,880 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 97 transitions, 715 flow [2022-12-06 06:16:14,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 97 transitions, 715 flow [2022-12-06 06:16:14,912 INFO L130 PetriNetUnfolder]: 147/705 cut-off events. [2022-12-06 06:16:14,913 INFO L131 PetriNetUnfolder]: For 700/715 co-relation queries the response was YES. [2022-12-06 06:16:14,914 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 06:16:14,919 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 97 transitions, 715 flow [2022-12-06 06:16:14,919 INFO L188 LiptonReduction]: Number of co-enabled transitions 1280 [2022-12-06 06:16:14,926 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 06:16:14,927 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 48 [2022-12-06 06:16:14,927 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 97 transitions, 715 flow [2022-12-06 06:16:14,927 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 06:16:14,927 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:16:14,927 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:16:14,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 06:16:14,928 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 06:16:14,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:16:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2042102856, now seen corresponding path program 1 times [2022-12-06 06:16:14,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:16:14,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97153732] [2022-12-06 06:16:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:16:14,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:16:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:16:14,966 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 06:16:14,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:16:14,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97153732] [2022-12-06 06:16:14,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97153732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:16:14,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:16:14,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 06:16:14,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645854160] [2022-12-06 06:16:14,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:16:14,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 06:16:14,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:16:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 06:16:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 06:16:14,967 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 51 [2022-12-06 06:16:14,967 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 06:16:14,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:16:14,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 51 [2022-12-06 06:16:14,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:16:15,523 INFO L130 PetriNetUnfolder]: 4042/7045 cut-off events. [2022-12-06 06:16:15,523 INFO L131 PetriNetUnfolder]: For 8651/8651 co-relation queries the response was YES. [2022-12-06 06:16:15,543 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 06:16:15,561 INFO L137 encePairwiseOnDemand]: 32/51 looper letters, 127 selfloop transitions, 47 changer transitions 21/197 dead transitions. [2022-12-06 06:16:15,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 197 transitions, 1531 flow [2022-12-06 06:16:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 06:16:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 06:16:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2022-12-06 06:16:15,562 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2022-12-06 06:16:15,562 INFO L175 Difference]: Start difference. First operand has 74 places, 97 transitions, 715 flow. Second operand 7 states and 174 transitions. [2022-12-06 06:16:15,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 197 transitions, 1531 flow [2022-12-06 06:16:15,607 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 06:16:15,609 INFO L231 Difference]: Finished difference. Result has 82 places, 106 transitions, 905 flow [2022-12-06 06:16:15,609 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 06:16:15,609 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2022-12-06 06:16:15,610 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:16:15,610 INFO L89 Accepts]: Start accepts. Operand has 82 places, 106 transitions, 905 flow [2022-12-06 06:16:15,610 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:16:15,610 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:16:15,611 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 106 transitions, 905 flow [2022-12-06 06:16:15,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 106 transitions, 905 flow [2022-12-06 06:16:15,675 INFO L130 PetriNetUnfolder]: 148/747 cut-off events. [2022-12-06 06:16:15,676 INFO L131 PetriNetUnfolder]: For 1043/1080 co-relation queries the response was YES. [2022-12-06 06:16:15,678 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 06:16:15,682 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 106 transitions, 905 flow [2022-12-06 06:16:15,682 INFO L188 LiptonReduction]: Number of co-enabled transitions 1344 [2022-12-06 06:16:15,688 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 06:16:15,689 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 79 [2022-12-06 06:16:15,689 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 106 transitions, 905 flow [2022-12-06 06:16:15,689 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 06:16:15,689 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:16:15,689 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:16:15,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 06:16:15,690 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 06:16:15,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:16:15,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2056835470, now seen corresponding path program 1 times [2022-12-06 06:16:15,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:16:15,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262492424] [2022-12-06 06:16:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:16:15,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:16:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:16:15,736 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 06:16:15,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:16:15,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262492424] [2022-12-06 06:16:15,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262492424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:16:15,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:16:15,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 06:16:15,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893743218] [2022-12-06 06:16:15,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:16:15,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 06:16:15,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:16:15,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 06:16:15,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 06:16:15,738 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 51 [2022-12-06 06:16:15,738 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 06:16:15,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:16:15,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 51 [2022-12-06 06:16:15,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:16:16,280 INFO L130 PetriNetUnfolder]: 3932/6890 cut-off events. [2022-12-06 06:16:16,280 INFO L131 PetriNetUnfolder]: For 11448/11448 co-relation queries the response was YES. [2022-12-06 06:16:16,304 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 06:16:16,318 INFO L137 encePairwiseOnDemand]: 32/51 looper letters, 136 selfloop transitions, 49 changer transitions 14/201 dead transitions. [2022-12-06 06:16:16,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 201 transitions, 1736 flow [2022-12-06 06:16:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 06:16:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 06:16:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2022-12-06 06:16:16,319 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44537815126050423 [2022-12-06 06:16:16,319 INFO L175 Difference]: Start difference. First operand has 82 places, 106 transitions, 905 flow. Second operand 7 states and 159 transitions. [2022-12-06 06:16:16,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 201 transitions, 1736 flow [2022-12-06 06:16:16,375 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 06:16:16,377 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 1083 flow [2022-12-06 06:16:16,378 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 06:16:16,378 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2022-12-06 06:16:16,378 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:16:16,378 INFO L89 Accepts]: Start accepts. Operand has 89 places, 115 transitions, 1083 flow [2022-12-06 06:16:16,379 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:16:16,380 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:16:16,380 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 115 transitions, 1083 flow [2022-12-06 06:16:16,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 115 transitions, 1083 flow [2022-12-06 06:16:16,417 INFO L130 PetriNetUnfolder]: 144/755 cut-off events. [2022-12-06 06:16:16,417 INFO L131 PetriNetUnfolder]: For 1378/1419 co-relation queries the response was YES. [2022-12-06 06:16:16,419 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 06:16:16,423 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 115 transitions, 1083 flow [2022-12-06 06:16:16,423 INFO L188 LiptonReduction]: Number of co-enabled transitions 1404 [2022-12-06 06:16:16,427 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 06:16:16,428 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 50 [2022-12-06 06:16:16,428 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 1083 flow [2022-12-06 06:16:16,428 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 06:16:16,428 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:16:16,428 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 06:16:16,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 06:16:16,429 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 06:16:16,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:16:16,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2030303597, now seen corresponding path program 1 times [2022-12-06 06:16:16,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:16:16,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305587599] [2022-12-06 06:16:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:16:16,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:16:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:16:16,497 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 06:16:16,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:16:16,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305587599] [2022-12-06 06:16:16,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305587599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:16:16,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:16:16,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 06:16:16,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025942500] [2022-12-06 06:16:16,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:16:16,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 06:16:16,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:16:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 06:16:16,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-06 06:16:16,498 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2022-12-06 06:16:16,498 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 06:16:16,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:16:16,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2022-12-06 06:16:16,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:16:16,989 INFO L130 PetriNetUnfolder]: 1748/4008 cut-off events. [2022-12-06 06:16:16,989 INFO L131 PetriNetUnfolder]: For 10821/11048 co-relation queries the response was YES. [2022-12-06 06:16:17,000 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 06:16:17,007 INFO L137 encePairwiseOnDemand]: 43/51 looper letters, 104 selfloop transitions, 11 changer transitions 52/188 dead transitions. [2022-12-06 06:16:17,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 188 transitions, 1687 flow [2022-12-06 06:16:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 06:16:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 06:16:17,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2022-12-06 06:16:17,008 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2022-12-06 06:16:17,008 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 1083 flow. Second operand 9 states and 187 transitions. [2022-12-06 06:16:17,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 188 transitions, 1687 flow [2022-12-06 06:16:17,042 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 06:16:17,044 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 972 flow [2022-12-06 06:16:17,044 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 06:16:17,045 INFO L294 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2022-12-06 06:16:17,045 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:16:17,045 INFO L89 Accepts]: Start accepts. Operand has 98 places, 107 transitions, 972 flow [2022-12-06 06:16:17,046 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:16:17,046 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:16:17,046 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 107 transitions, 972 flow [2022-12-06 06:16:17,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 107 transitions, 972 flow [2022-12-06 06:16:17,087 INFO L130 PetriNetUnfolder]: 108/605 cut-off events. [2022-12-06 06:16:17,087 INFO L131 PetriNetUnfolder]: For 1255/1304 co-relation queries the response was YES. [2022-12-06 06:16:17,089 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 06:16:17,093 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 107 transitions, 972 flow [2022-12-06 06:16:17,093 INFO L188 LiptonReduction]: Number of co-enabled transitions 1224 [2022-12-06 06:16:17,097 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 06:16:17,114 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 06:16:17,160 INFO L203 LiptonReduction]: Total number of compositions: 2 [2022-12-06 06:16:17,161 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 116 [2022-12-06 06:16:17,161 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 989 flow [2022-12-06 06:16:17,162 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 06:16:17,162 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:16:17,162 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 06:16:17,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 06:16:17,162 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 06:16:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:16:17,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1266506137, now seen corresponding path program 2 times [2022-12-06 06:16:17,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:16:17,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024504755] [2022-12-06 06:16:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:16:17,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:16:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 06:16:17,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-06 06:16:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 06:16:17,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-06 06:16:17,200 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-06 06:16:17,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-06 06:16:17,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-06 06:16:17,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-06 06:16:17,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-06 06:16:17,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-06 06:16:17,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-06 06:16:17,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-06 06:16:17,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 06:16:17,203 INFO L458 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2022-12-06 06:16:17,207 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 06:16:17,207 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 06:16:17,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:16:17 BasicIcfg [2022-12-06 06:16:17,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 06:16:17,245 INFO L158 Benchmark]: Toolchain (without parser) took 11642.21ms. Allocated memory was 185.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 137.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 390.9MB. Max. memory is 8.0GB. [2022-12-06 06:16:17,245 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 06:16:17,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.75ms. Allocated memory is still 185.6MB. Free memory was 137.4MB in the beginning and 147.0MB in the end (delta: -9.6MB). Peak memory consumption was 6.7MB. Max. memory is 8.0GB. [2022-12-06 06:16:17,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.86ms. Allocated memory is still 185.6MB. Free memory was 147.0MB in the beginning and 144.9MB in the end (delta: 2.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 06:16:17,246 INFO L158 Benchmark]: Boogie Preprocessor took 28.23ms. Allocated memory is still 185.6MB. Free memory was 144.9MB in the beginning and 143.4MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-06 06:16:17,246 INFO L158 Benchmark]: RCFGBuilder took 382.01ms. Allocated memory is still 185.6MB. Free memory was 143.4MB in the beginning and 127.6MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-06 06:16:17,246 INFO L158 Benchmark]: TraceAbstraction took 10734.70ms. Allocated memory was 185.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 127.1MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 380.0MB. Max. memory is 8.0GB. [2022-12-06 06:16:17,247 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 127.9MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 428.75ms. Allocated memory is still 185.6MB. Free memory was 137.4MB in the beginning and 147.0MB in the end (delta: -9.6MB). Peak memory consumption was 6.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.86ms. Allocated memory is still 185.6MB. Free memory was 147.0MB in the beginning and 144.9MB in the end (delta: 2.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.23ms. Allocated memory is still 185.6MB. Free memory was 144.9MB in the beginning and 143.4MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 382.01ms. Allocated memory is still 185.6MB. Free memory was 143.4MB in the beginning and 127.6MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 10734.70ms. Allocated memory was 185.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 127.1MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 380.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 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: 104, independent: 54, independent conditional: 0, independent unconditional: 54, dependent: 49, dependent conditional: 0, dependent unconditional: 49, 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: 21, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 16, dependent conditional: 6, dependent unconditional: 10, 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: 9, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 9, dependent conditional: 1, dependent unconditional: 8, 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: 0.0s, 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: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 3, dependent unconditional: 2, 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: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 3, 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: 10.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 610 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 610 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.7s 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 06:16:17,284 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...