/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/gemcutter/NewStatesSleepPersistentFixedOrder.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_THREAD_INSTANCE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false -i ../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-44940e9-m [2022-11-09 16:42:41,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-09 16:42:41,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-09 16:42:41,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-09 16:42:41,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-09 16:42:41,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-09 16:42:41,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-09 16:42:41,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-09 16:42:41,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-09 16:42:41,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-09 16:42:41,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-09 16:42:41,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-09 16:42:41,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-09 16:42:41,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-09 16:42:41,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-09 16:42:41,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-09 16:42:41,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-09 16:42:41,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-09 16:42:41,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-09 16:42:41,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-09 16:42:41,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-09 16:42:41,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-09 16:42:41,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-09 16:42:41,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-09 16:42:41,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-09 16:42:41,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-09 16:42:41,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-09 16:42:41,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-09 16:42:41,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-09 16:42:41,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-09 16:42:41,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-09 16:42:41,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-09 16:42:41,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-09 16:42:41,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-09 16:42:41,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-09 16:42:41,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-09 16:42:41,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-09 16:42:41,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-09 16:42:41,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-09 16:42:41,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-09 16:42:41,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-09 16:42:41,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf [2022-11-09 16:42:41,144 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-09 16:42:41,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-09 16:42:41,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-09 16:42:41,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-09 16:42:41,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-09 16:42:41,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-09 16:42:41,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-09 16:42:41,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-09 16:42:41,147 INFO L138 SettingsManager]: * Use SBE=true [2022-11-09 16:42:41,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-09 16:42:41,147 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-09 16:42:41,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-09 16:42:41,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-09 16:42:41,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-09 16:42:41,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-09 16:42:41,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-09 16:42:41,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-09 16:42:41,148 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-09 16:42:41,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-09 16:42:41,149 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-09 16:42:41,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-09 16:42:41,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-09 16:42:41,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-09 16:42:41,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-11-09 16:42:41,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-09 16:42:41,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-09 16:42:41,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-09 16:42:41,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-09 16:42:41,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-09 16:42:41,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-09 16:42:41,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-09 16:42:41,151 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-09 16:42:41,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-11-09 16:42:41,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-09 16:42:41,151 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-11-09 16:42:41,152 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-11-09 16:42:41,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_THREAD_INSTANCE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false [2022-11-09 16:42:41,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-09 16:42:41,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-09 16:42:41,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-09 16:42:41,414 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-09 16:42:41,414 INFO L275 PluginConnector]: CDTParser initialized [2022-11-09 16:42:41,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i [2022-11-09 16:42:41,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5656d91/7a90954a8b564a8aa46f6601127066a6/FLAGf27357440 [2022-11-09 16:42:41,942 INFO L306 CDTParser]: Found 1 translation units. [2022-11-09 16:42:41,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i [2022-11-09 16:42:41,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5656d91/7a90954a8b564a8aa46f6601127066a6/FLAGf27357440 [2022-11-09 16:42:42,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5656d91/7a90954a8b564a8aa46f6601127066a6 [2022-11-09 16:42:42,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-09 16:42:42,269 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-11-09 16:42:42,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-09 16:42:42,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-09 16:42:42,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-09 16:42:42,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:42,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb41937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42, skipping insertion in model container [2022-11-09 16:42:42,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:42,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-09 16:42:42,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-09 16:42:42,518 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-09 16:42:42,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-09 16:42:42,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-09 16:42:42,775 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-09 16:42:42,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-09 16:42:42,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-09 16:42:42,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-09 16:42:42,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-09 16:42:42,797 INFO L203 MainTranslator]: Completed pre-run [2022-11-09 16:42:42,813 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-09 16:42:42,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-09 16:42:42,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-09 16:42:42,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-09 16:42:42,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-09 16:42:42,869 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-09 16:42:42,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-09 16:42:42,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-09 16:42:42,917 INFO L208 MainTranslator]: Completed translation [2022-11-09 16:42:42,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42 WrapperNode [2022-11-09 16:42:42,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-09 16:42:42,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-09 16:42:42,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-09 16:42:42,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-09 16:42:42,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:42,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:42,989 INFO L138 Inliner]: procedures = 225, calls = 43, calls flagged for inlining = 10, calls inlined = 7, statements flattened = 195 [2022-11-09 16:42:42,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-09 16:42:42,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-09 16:42:42,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-09 16:42:42,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-09 16:42:43,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:43,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:43,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:43,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:43,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:43,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:43,057 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:43,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:43,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-09 16:42:43,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-09 16:42:43,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-09 16:42:43,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-09 16:42:43,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (1/1) ... [2022-11-09 16:42:43,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-09 16:42:43,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-11-09 16:42:43,100 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) [2022-11-09 16:42:43,131 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 [2022-11-09 16:42:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-09 16:42:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-09 16:42:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-09 16:42:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-09 16:42:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-09 16:42:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-09 16:42:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2022-11-09 16:42:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2022-11-09 16:42:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-09 16:42:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-09 16:42:43,148 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-09 16:42:43,307 INFO L235 CfgBuilder]: Building ICFG [2022-11-09 16:42:43,308 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-09 16:42:43,664 INFO L276 CfgBuilder]: Performing block encoding [2022-11-09 16:42:43,671 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-09 16:42:43,671 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-09 16:42:43,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:42:43 BoogieIcfgContainer [2022-11-09 16:42:43,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-09 16:42:43,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-09 16:42:43,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-09 16:42:43,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-09 16:42:43,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:42:42" (1/3) ... [2022-11-09 16:42:43,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2722147c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:42:43, skipping insertion in model container [2022-11-09 16:42:43,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:42:42" (2/3) ... [2022-11-09 16:42:43,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2722147c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:42:43, skipping insertion in model container [2022-11-09 16:42:43,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:42:43" (3/3) ... [2022-11-09 16:42:43,681 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2022-11-09 16:42:43,688 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-09 16:42:43,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-09 16:42:43,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-09 16:42:43,697 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-09 16:42:43,768 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-09 16:42:43,805 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-09 16:42:43,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-09 16:42:43,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-11-09 16:42:43,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-09 16:42:43,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-11-09 16:42:43,845 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-09 16:42:43,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == reader_nowait_fnThread1of1ForFork0 ======== [2022-11-09 16:42:43,867 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@29f97e1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-09 16:42:43,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-09 16:42:44,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-09 16:42:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-09 16:42:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash -459983098, now seen corresponding path program 1 times [2022-11-09 16:42:44,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-09 16:42:44,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443898050] [2022-11-09 16:42:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-09 16:42:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-09 16:42:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-09 16:42:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-09 16:42:44,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-09 16:42:44,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443898050] [2022-11-09 16:42:44,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443898050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-09 16:42:44,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-09 16:42:44,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-09 16:42:44,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036371840] [2022-11-09 16:42:44,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-09 16:42:44,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-09 16:42:44,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-09 16:42:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-09 16:42:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-09 16:42:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:44,415 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-09 16:42:44,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2022-11-09 16:42:44,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:44,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-09 16:42:44,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-09 16:42:44,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-09 16:42:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1734704712, now seen corresponding path program 1 times [2022-11-09 16:42:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-09 16:42:44,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503435263] [2022-11-09 16:42:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-09 16:42:44,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-09 16:42:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-09 16:42:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-09 16:42:45,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-09 16:42:45,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503435263] [2022-11-09 16:42:45,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503435263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-09 16:42:45,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-09 16:42:45,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-09 16:42:45,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168741160] [2022-11-09 16:42:45,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-09 16:42:45,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-09 16:42:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-09 16:42:45,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-09 16:42:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-09 16:42:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:45,126 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-09 16:42:45,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-09 16:42:45,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:45,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:45,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-09 16:42:45,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-09 16:42:45,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-09 16:42:45,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1822512657, now seen corresponding path program 1 times [2022-11-09 16:42:45,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-09 16:42:45,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276730637] [2022-11-09 16:42:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-09 16:42:45,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-09 16:42:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-09 16:42:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-09 16:42:45,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-09 16:42:45,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276730637] [2022-11-09 16:42:45,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276730637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-09 16:42:45,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-09 16:42:45,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-09 16:42:45,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455812643] [2022-11-09 16:42:45,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-09 16:42:45,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-09 16:42:45,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-09 16:42:45,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-09 16:42:45,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-09 16:42:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:45,712 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-09 16:42:45,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2022-11-09 16:42:45,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:45,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:45,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:45,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-09 16:42:45,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-09 16:42:45,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-09 16:42:45,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1524565277, now seen corresponding path program 1 times [2022-11-09 16:42:45,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-09 16:42:45,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198542339] [2022-11-09 16:42:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-09 16:42:45,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-09 16:42:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-09 16:42:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-09 16:42:46,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-09 16:42:46,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198542339] [2022-11-09 16:42:46,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198542339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-09 16:42:46,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-09 16:42:46,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-09 16:42:46,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801399544] [2022-11-09 16:42:46,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-09 16:42:46,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-09 16:42:46,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-09 16:42:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-09 16:42:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-09 16:42:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:46,323 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-09 16:42:46,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 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) [2022-11-09 16:42:46,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:46,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-09 16:42:46,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-09 16:42:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-09 16:42:46,426 INFO L85 PathProgramCache]: Analyzing trace with hash -784462242, now seen corresponding path program 1 times [2022-11-09 16:42:46,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-09 16:42:46,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624184875] [2022-11-09 16:42:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-09 16:42:46,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-09 16:42:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-09 16:42:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-09 16:42:46,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-09 16:42:46,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624184875] [2022-11-09 16:42:46,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624184875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-09 16:42:46,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-09 16:42:46,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-09 16:42:46,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592740462] [2022-11-09 16:42:46,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-09 16:42:46,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-09 16:42:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-09 16:42:46,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-09 16:42:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-09 16:42:46,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:46,547 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-09 16:42:46,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2022-11-09 16:42:46,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:46,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-09 16:42:46,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-09 16:42:46,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-09 16:42:46,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-09 16:42:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1280034969, now seen corresponding path program 1 times [2022-11-09 16:42:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-09 16:42:46,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263364494] [2022-11-09 16:42:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-09 16:42:46,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-09 16:42:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-09 16:42:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-09 16:42:47,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-09 16:42:47,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263364494] [2022-11-09 16:42:47,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263364494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-09 16:42:47,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-09 16:42:47,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-09 16:42:47,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807576802] [2022-11-09 16:42:47,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-09 16:42:47,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-09 16:42:47,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-09 16:42:47,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-09 16:42:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-11-09 16:42:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:47,841 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-09 16:42:47,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.0) internal successors, (102), 18 states have internal predecessors, (102), 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) [2022-11-09 16:42:47,841 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:47,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:47,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:47,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:47,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-09 16:42:47,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-09 16:42:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-09 16:42:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-09 16:42:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-09 16:42:48,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-09 16:42:48,777 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-09 16:42:48,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-09 16:42:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash 889629678, now seen corresponding path program 1 times [2022-11-09 16:42:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-09 16:42:48,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994139094] [2022-11-09 16:42:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-09 16:42:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-09 16:42:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-09 16:42:48,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-09 16:42:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-09 16:42:48,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-09 16:42:48,900 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-09 16:42:48,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE (5 of 6 remaining) [2022-11-09 16:42:48,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2022-11-09 16:42:48,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2022-11-09 16:42:48,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2022-11-09 16:42:48,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2022-11-09 16:42:48,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location reader_nowait_fnErr2ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2022-11-09 16:42:48,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-09 16:42:48,911 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-09 16:42:48,912 INFO L307 ceAbstractionStarter]: Result for error location reader_nowait_fnThread1of1ForFork0 was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2022-11-09 16:42:48,916 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-09 16:42:48,917 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-09 16:42:48,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:42:48 BasicIcfg [2022-11-09 16:42:48,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-09 16:42:48,997 INFO L158 Benchmark]: Toolchain (without parser) took 6727.43ms. Allocated memory was 198.2MB in the beginning and 346.0MB in the end (delta: 147.8MB). Free memory was 133.9MB in the beginning and 144.2MB in the end (delta: -10.3MB). Peak memory consumption was 137.5MB. Max. memory is 8.0GB. [2022-11-09 16:42:48,997 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory was 152.3MB in the beginning and 152.2MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-11-09 16:42:48,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 631.20ms. Allocated memory was 198.2MB in the beginning and 263.2MB in the end (delta: 65.0MB). Free memory was 169.6MB in the beginning and 213.7MB in the end (delta: -44.1MB). Peak memory consumption was 26.5MB. Max. memory is 8.0GB. [2022-11-09 16:42:48,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.38ms. Allocated memory is still 263.2MB. Free memory was 213.7MB in the beginning and 210.0MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-11-09 16:42:48,998 INFO L158 Benchmark]: Boogie Preprocessor took 72.02ms. Allocated memory is still 263.2MB. Free memory was 210.0MB in the beginning and 206.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-11-09 16:42:48,998 INFO L158 Benchmark]: RCFGBuilder took 610.98ms. Allocated memory is still 263.2MB. Free memory was 206.9MB in the beginning and 180.6MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-11-09 16:42:48,999 INFO L158 Benchmark]: TraceAbstraction took 5320.99ms. Allocated memory was 263.2MB in the beginning and 346.0MB in the end (delta: 82.8MB). Free memory was 180.1MB in the beginning and 144.2MB in the end (delta: 35.9MB). Peak memory consumption was 119.3MB. Max. memory is 8.0GB. [2022-11-09 16:42:49,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory was 152.3MB in the beginning and 152.2MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 631.20ms. Allocated memory was 198.2MB in the beginning and 263.2MB in the end (delta: 65.0MB). Free memory was 169.6MB in the beginning and 213.7MB in the end (delta: -44.1MB). Peak memory consumption was 26.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.38ms. Allocated memory is still 263.2MB. Free memory was 213.7MB in the beginning and 210.0MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 72.02ms. Allocated memory is still 263.2MB. Free memory was 210.0MB in the beginning and 206.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 610.98ms. Allocated memory is still 263.2MB. Free memory was 206.9MB in the beginning and 180.6MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 5320.99ms. Allocated memory was 263.2MB in the beginning and 346.0MB in the end (delta: 82.8MB). Free memory was 180.1MB in the beginning and 144.2MB in the end (delta: 35.9MB). Peak memory consumption was 119.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 6220, positive: 6106, positive conditional: 402, positive unconditional: 5704, negative: 114, negative conditional: 65, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6164, positive: 6106, positive conditional: 402, positive unconditional: 5704, negative: 58, negative conditional: 9, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 6164, positive: 6106, positive conditional: 402, positive unconditional: 5704, negative: 58, negative conditional: 9, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6189, positive: 6106, positive conditional: 11, positive unconditional: 6095, negative: 83, negative conditional: 14, negative unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 6189, positive: 6106, positive conditional: 11, positive unconditional: 6095, negative: 83, negative conditional: 5, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 6189, positive: 6106, positive conditional: 11, positive unconditional: 6095, negative: 83, negative conditional: 5, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5727, positive: 5665, positive conditional: 11, positive unconditional: 5654, negative: 62, negative conditional: 5, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5727, positive: 5585, positive conditional: 0, positive unconditional: 5585, negative: 142, negative conditional: 0, negative unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 142, positive: 80, positive conditional: 11, positive unconditional: 69, negative: 62, negative conditional: 5, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 417, positive: 215, positive conditional: 45, positive unconditional: 169, negative: 202, negative conditional: 19, negative unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6189, positive: 441, positive conditional: 0, positive unconditional: 441, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 5727, unknown conditional: 16, unknown unconditional: 5711] , Statistics on independence cache: Total cache size (in pairs): 5727, Positive cache size: 5665, Positive conditional cache size: 11, Positive unconditional cache size: 5654, Negative cache size: 62, Negative conditional cache size: 5, Negative unconditional cache size: 57, Eliminated conditions: 9, Maximal queried relation: 2, Independence queries for same thread: 56 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.4s, Number of persistent set computation: 137, Number of trivial persistent sets: 107, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5753, positive: 5704, positive conditional: 0, positive unconditional: 5704, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 6220, positive: 6106, positive conditional: 402, positive unconditional: 5704, negative: 114, negative conditional: 65, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6164, positive: 6106, positive conditional: 402, positive unconditional: 5704, negative: 58, negative conditional: 9, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 6164, positive: 6106, positive conditional: 402, positive unconditional: 5704, negative: 58, negative conditional: 9, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6189, positive: 6106, positive conditional: 11, positive unconditional: 6095, negative: 83, negative conditional: 14, negative unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 6189, positive: 6106, positive conditional: 11, positive unconditional: 6095, negative: 83, negative conditional: 5, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 6189, positive: 6106, positive conditional: 11, positive unconditional: 6095, negative: 83, negative conditional: 5, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5727, positive: 5665, positive conditional: 11, positive unconditional: 5654, negative: 62, negative conditional: 5, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5727, positive: 5585, positive conditional: 0, positive unconditional: 5585, negative: 142, negative conditional: 0, negative unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 142, positive: 80, positive conditional: 11, positive unconditional: 69, negative: 62, negative conditional: 5, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 417, positive: 215, positive conditional: 45, positive unconditional: 169, negative: 202, negative conditional: 19, negative unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6189, positive: 441, positive conditional: 0, positive unconditional: 441, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 5727, unknown conditional: 16, unknown unconditional: 5711] , Statistics on independence cache: Total cache size (in pairs): 5727, Positive cache size: 5665, Positive conditional cache size: 11, Positive unconditional cache size: 5654, Negative cache size: 62, Negative conditional cache size: 5, Negative unconditional cache size: 57, Eliminated conditions: 9, Maximal queried relation: 2, Independence queries for same thread: 56 - DataRaceFoundResult [Line: 816]: Data race detected Data race detected The following path leads to a data race: [L864] 0 pthread_t reader; VAL [reader={9:0}] [L865] 0 Ring r; VAL [r={8:0}, reader={9:0}] [L866] CALL 0 ring_init( &r ) [L823] EXPR 0 r->writer = 0 VAL [r={8:0}, r={8:0}, r->writer = 0=115] [L823] 0 r->reader = r->writer = 0 VAL [r={8:0}, r={8:0}, r->reader = r->writer = 0=116, r->writer = 0=115] [L866] RET 0 ring_init( &r ) [L867] FCALL, FORK 0 pthread_create( &reader, ((void *)0), &reader_nowait_fn, &r ) VAL [pthread_create( &reader, ((void *)0), &reader_nowait_fn, &r )=-1, r={8:0}, reader={9:0}] [L851] 1 Ring *r = arg; VAL [arg={8:0}, arg={8:0}, r={8:0}] [L852] 1 long val = 0, last = 0, i = 0; VAL [arg={8:0}, arg={8:0}, i=0, last=0, r={8:0}, val=0] [L853] COND TRUE 1 i < 8 VAL [arg={8:0}, arg={8:0}, i=0, last=0, r={8:0}, val=0] [L854] CALL 1 ring_dequeue( r ) [L815] EXPR 1 r->reader VAL [r={8:0}, r={8:0}, r->reader=0] [L815] EXPR 1 r->q[ r->reader ] VAL [r={8:0}, r={8:0}, r->q[ r->reader ]=117, r->reader=0] [L815] 1 long x = r->q[ r->reader ]; VAL [r={8:0}, r={8:0}, r->q[ r->reader ]=117, r->reader=0, x=117] [L816] EXPR 1 r->reader VAL [r={8:0}, r={8:0}, r->reader=0, x=117] [L816] EXPR 1 r->reader + 1 VAL [r={8:0}, r={8:0}, r->reader=0, x=117] [L816] 1 r->reader = (r->reader + 1) % 4 VAL [r={8:0}, r={8:0}, r->reader=0, r->reader = (r->reader + 1) % 4=118, x=117] [L868] CALL 0 writer_fn( &r ) [L842] 0 Ring *r = arg; VAL [arg={8:0}, arg={8:0}, r={8:0}] [L843] 0 long i = 0; VAL [arg={8:0}, arg={8:0}, i=0, r={8:0}] [L843] COND TRUE 0 i < 8 VAL [arg={8:0}, arg={8:0}, i=0, r={8:0}] [L845] CALL 0 ring_enqueue( r, i + 1 ) [L810] EXPR 0 r->writer VAL [\old(x)=1, r={8:0}, r={8:0}, r->writer=0, x=1] [L810] EXPR 0 r->writer + 1 VAL [\old(x)=1, r={8:0}, r={8:0}, r->writer=0, x=1] [L810] EXPR 0 r->reader VAL [\old(x)=1, r={8:0}, r={8:0}, r->reader=1, r->writer=0, x=1] [L810] 0 (r->writer + 1) % 4 == r->reader VAL [\old(x)=1, r={8:0}, r={8:0}, r->reader=1, r->writer=0, x=1] [L816] 1 r->reader = (r->reader + 1) % 4 VAL [r={8:0}, r={8:0}, r->reader=0, r->reader = (r->reader + 1) % 4=118, x=117] Now there is a data race, but we were unable to determine exactly which statements and variables are involved. There could be a race between one of the statements * C: long x = r->q[ r->reader ]; [815] * C: r->writer + 1 [810] * C: r->reader = r->writer = 0 [823] * C: r->writer + 1 [810] * C: r->reader + 1 [816] * C: r->reader = r->writer = 0 [823] * C: long x = r->q[ r->reader ]; [815] * C: r->q[ r->reader ] [815] * C: r->writer + 1 [810] * C: r->reader + 1 [816] * C: r->writer = 0 [823] * C: r->q[ r->reader ] [815] * C: r->writer = 0 [823] * C: r->writer + 1 [810] * C: long x = r->q[ r->reader ]; [815] * C: r->reader = r->writer = 0 [823] * C: (r->writer + 1) % 4 == r->reader [810] * C: long x = r->q[ r->reader ]; [815] * C: r->q[ r->reader ] [815] * C: r->q[ r->reader ] [815] * C: r->reader + 1 [816] * C: r->reader = r->writer = 0 [823] * C: r->writer = 0 [823] * C: r->writer = 0 [823] * C: r->reader + 1 [816] and C: r->reader = (r->reader + 1) % 4 [816] - UnprovableResult [Line: 815]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 815]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: reader_nowait_fnThread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 314 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.7s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 40, 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, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 592 NumberOfCodeBlocks, 592 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 478 ConstructedInterpolants, 0 QuantifiedInterpolants, 1969 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-09 16:42:49,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-11-09 16:42:49,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...