/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-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 20:12:55,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 20:12:55,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 20:12:55,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-01 20:12:55,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-01 20:12:55,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-01 20:12:55,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-01 20:12:55,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-01 20:12:55,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-01 20:12:55,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-01 20:12:55,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-01 20:12:55,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-01 20:12:55,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-01 20:12:55,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-01 20:12:55,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-01 20:12:55,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-01 20:12:55,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-01 20:12:55,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-01 20:12:55,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-01 20:12:55,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-01 20:12:55,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-01 20:12:55,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-01 20:12:55,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-01 20:12:55,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-01 20:12:55,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-01 20:12:55,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-01 20:12:55,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-01 20:12:55,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-01 20:12:55,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-01 20:12:55,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-01 20:12:55,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-01 20:12:55,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-01 20:12:55,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-01 20:12:55,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 20:12:55,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 20:12:55,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 20:12:55,738 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-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf [2022-03-01 20:12:55,756 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 20:12:55,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 20:12:55,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 20:12:55,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 20:12:55,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 20:12:55,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 20:12:55,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 20:12:55,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 20:12:55,759 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 20:12:55,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 20:12:55,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 20:12:55,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 20:12:55,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 20:12:55,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 20:12:55,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 20:12:55,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 20:12:55,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 20:12:55,761 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 20:12:55,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 20:12:55,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 20:12:55,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 20:12:55,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 20:12:55,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 20:12:55,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 20:12:55,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 20:12:55,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 20:12:55,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 20:12:55,762 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-01 20:12:55,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 20:12:55,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 20:12:55,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 20:12:55,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 20:12:55,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 20:12:55,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-01 20:12:55,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 20:12:55,763 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-01 20:12:55,763 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-03-01 20:12:55,763 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-01 20:12:55,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 20:12:55,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 20:12:56,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 20:12:56,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 20:12:56,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 20:12:56,018 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 20:12:56,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2022-03-01 20:12:56,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bed0ac9dd/4e0a7fcd533f45bf9e433bd1d905b4dc/FLAG04018f027 [2022-03-01 20:12:56,537 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 20:12:56,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2022-03-01 20:12:56,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bed0ac9dd/4e0a7fcd533f45bf9e433bd1d905b4dc/FLAG04018f027 [2022-03-01 20:12:56,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bed0ac9dd/4e0a7fcd533f45bf9e433bd1d905b4dc [2022-03-01 20:12:56,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 20:12:56,878 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 20:12:56,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 20:12:56,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 20:12:56,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 20:12:56,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 08:12:56" (1/1) ... [2022-03-01 20:12:56,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa475db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:56, skipping insertion in model container [2022-03-01 20:12:56,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 08:12:56" (1/1) ... [2022-03-01 20:12:56,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 20:12:56,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 20:12:57,079 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-03-01 20:12:57,216 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/condvar_spurious_wakeup.i[30416,30429] [2022-03-01 20:12:57,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 20:12:57,242 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 20:12:57,255 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-03-01 20:12:57,274 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/condvar_spurious_wakeup.i[30416,30429] [2022-03-01 20:12:57,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 20:12:57,306 INFO L208 MainTranslator]: Completed translation [2022-03-01 20:12:57,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57 WrapperNode [2022-03-01 20:12:57,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 20:12:57,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 20:12:57,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 20:12:57,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 20:12:57,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,341 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-03-01 20:12:57,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 20:12:57,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 20:12:57,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 20:12:57,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 20:12:57,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 20:12:57,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 20:12:57,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 20:12:57,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 20:12:57,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (1/1) ... [2022-03-01 20:12:57,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 20:12:57,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 20:12:57,389 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) [2022-03-01 20:12:57,413 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 [2022-03-01 20:12:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 20:12:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 20:12:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-03-01 20:12:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 20:12:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 20:12:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 20:12:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 20:12:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-03-01 20:12:57,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-03-01 20:12:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 20:12:57,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 20:12:57,437 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 20:12:57,571 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 20:12:57,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 20:12:57,705 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 20:12:57,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 20:12:57,711 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-01 20:12:57,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 08:12:57 BoogieIcfgContainer [2022-03-01 20:12:57,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 20:12:57,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 20:12:57,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 20:12:57,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 20:12:57,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 08:12:56" (1/3) ... [2022-03-01 20:12:57,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138f3d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 08:12:57, skipping insertion in model container [2022-03-01 20:12:57,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 08:12:57" (2/3) ... [2022-03-01 20:12:57,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138f3d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 08:12:57, skipping insertion in model container [2022-03-01 20:12:57,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 08:12:57" (3/3) ... [2022-03-01 20:12:57,723 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2022-03-01 20:12:57,727 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 20:12:57,727 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 20:12:57,728 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 20:12:57,728 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 20:12:57,759 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,759 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,759 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,759 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,760 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,760 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,760 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,760 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,760 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,761 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,761 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,761 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,761 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,763 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,763 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,763 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,763 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,766 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,766 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,766 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,766 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,766 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,767 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 20:12:57,770 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-01 20:12:57,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-01 20:12:57,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 20:12:57,809 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) [2022-03-01 20:12:57,823 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 [2022-03-01 20:12:57,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 20:12:57,852 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=false [2022-03-01 20:12:57,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 20:12:57,921 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 62 transitions and produced 63 states. [2022-03-01 20:12:57,923 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-01 20:12:57,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 20:12:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1647222963, now seen corresponding path program 1 times [2022-03-01 20:12:57,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 20:12:57,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347944404] [2022-03-01 20:12:57,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 20:12:57,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 20:12:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 20:12:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 20:12:58,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 20:12:58,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347944404] [2022-03-01 20:12:58,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347944404] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 20:12:58,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 20:12:58,145 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 20:12:58,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816890201] [2022-03-01 20:12:58,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 20:12:58,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 20:12:58,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 20:12:58,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 20:12:58,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 20:12:58,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:58,174 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 20:12:58,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 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) [2022-03-01 20:12:58,179 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:58,199 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 62 transitions and produced 63 states. [2022-03-01 20:12:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:58,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 20:12:58,201 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-01 20:12:58,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 20:12:58,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1450709458, now seen corresponding path program 1 times [2022-03-01 20:12:58,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 20:12:58,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066831078] [2022-03-01 20:12:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 20:12:58,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 20:12:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 20:12:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 20:12:58,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 20:12:58,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066831078] [2022-03-01 20:12:58,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066831078] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 20:12:58,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 20:12:58,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 20:12:58,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283997789] [2022-03-01 20:12:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 20:12:58,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 20:12:58,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 20:12:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 20:12:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 20:12:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:58,340 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 20:12:58,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2022-03-01 20:12:58,340 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:58,340 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:58,373 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 74 transitions and produced 75 states. [2022-03-01 20:12:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 20:12:58,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 20:12:58,374 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-01 20:12:58,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 20:12:58,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2009823221, now seen corresponding path program 1 times [2022-03-01 20:12:58,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 20:12:58,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508570890] [2022-03-01 20:12:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 20:12:58,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 20:12:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 20:12:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 20:12:58,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 20:12:58,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508570890] [2022-03-01 20:12:58,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508570890] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 20:12:58,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288645650] [2022-03-01 20:12:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 20:12:58,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 20:12:58,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 20:12:58,520 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 20:12:58,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 20:12:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 20:12:58,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-01 20:12:58,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 20:12:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 20:12:58,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 20:12:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 20:12:58,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288645650] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 20:12:58,885 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 20:12:58,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-01 20:12:58,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217980240] [2022-03-01 20:12:58,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 20:12:58,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 20:12:58,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 20:12:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 20:12:58,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-01 20:12:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:58,888 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 20:12:58,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2022-03-01 20:12:58,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:58,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-01 20:12:58,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:59,220 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 98 transitions and produced 99 states. [2022-03-01 20:12:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:12:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 20:12:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 20:12:59,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 20:12:59,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-01 20:12:59,447 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-01 20:12:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 20:12:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1859989397, now seen corresponding path program 2 times [2022-03-01 20:12:59,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 20:12:59,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28867480] [2022-03-01 20:12:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 20:12:59,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 20:12:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 20:12:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 20:12:59,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 20:12:59,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28867480] [2022-03-01 20:12:59,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28867480] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 20:12:59,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760650543] [2022-03-01 20:12:59,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 20:12:59,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 20:12:59,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 20:12:59,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 20:12:59,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 20:12:59,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 20:12:59,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 20:12:59,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 20:12:59,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 20:12:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 20:12:59,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 20:13:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 20:13:00,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760650543] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 20:13:00,122 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 20:13:00,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 20:13:00,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097873023] [2022-03-01 20:13:00,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 20:13:00,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 20:13:00,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 20:13:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 20:13:00,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-01 20:13:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:13:00,128 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 20:13:00,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 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) [2022-03-01 20:13:00,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:13:00,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-01 20:13:00,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-01 20:13:00,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:13:00,520 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 146 transitions and produced 139 states. [2022-03-01 20:13:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:13:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 20:13:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 20:13:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 20:13:00,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 20:13:00,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 20:13:00,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-01 20:13:00,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 20:13:00,749 INFO L85 PathProgramCache]: Analyzing trace with hash -185566933, now seen corresponding path program 3 times [2022-03-01 20:13:00,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 20:13:00,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082847932] [2022-03-01 20:13:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 20:13:00,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 20:13:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 20:13:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 20:13:00,967 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 20:13:00,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082847932] [2022-03-01 20:13:00,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082847932] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 20:13:00,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497782481] [2022-03-01 20:13:00,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 20:13:00,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 20:13:00,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 20:13:00,969 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 20:13:01,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 20:13:01,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 20:13:01,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 20:13:01,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 20:13:01,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 20:13:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-03-01 20:13:01,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 20:13:01,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497782481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 20:13:01,310 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 20:13:01,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-03-01 20:13:01,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933819531] [2022-03-01 20:13:01,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 20:13:01,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 20:13:01,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 20:13:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 20:13:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-03-01 20:13:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:13:01,323 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 20:13:01,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2022-03-01 20:13:01,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:13:01,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-01 20:13:01,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-01 20:13:01,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-01 20:13:01,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:13:01,595 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 185 transitions and produced 151 states. [2022-03-01 20:13:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 20:13:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 20:13:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 20:13:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 20:13:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 20:13:01,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 20:13:01,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 20:13:01,812 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-01 20:13:01,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 20:13:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash 884916797, now seen corresponding path program 1 times [2022-03-01 20:13:01,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 20:13:01,814 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371158267] [2022-03-01 20:13:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 20:13:01,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 20:13:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 20:13:01,862 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-01 20:13:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 20:13:01,924 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-01 20:13:01,925 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-01 20:13:01,926 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 20:13:01,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 20:13:01,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-03-01 20:13:01,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 20:13:01,935 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-03-01 20:13:01,939 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 20:13:01,939 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 20:13:02,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 08:13:02 BasicIcfg [2022-03-01 20:13:02,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 20:13:02,003 INFO L158 Benchmark]: Toolchain (without parser) took 5124.28ms. Allocated memory was 183.5MB in the beginning and 307.2MB in the end (delta: 123.7MB). Free memory was 125.4MB in the beginning and 199.9MB in the end (delta: -74.5MB). Peak memory consumption was 50.1MB. Max. memory is 8.0GB. [2022-03-01 20:13:02,003 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 183.5MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 20:13:02,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.64ms. Allocated memory was 183.5MB in the beginning and 307.2MB in the end (delta: 123.7MB). Free memory was 125.2MB in the beginning and 269.0MB in the end (delta: -143.8MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. [2022-03-01 20:13:02,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.61ms. Allocated memory is still 307.2MB. Free memory was 269.0MB in the beginning and 266.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 20:13:02,006 INFO L158 Benchmark]: Boogie Preprocessor took 19.19ms. Allocated memory is still 307.2MB. Free memory was 266.9MB in the beginning and 265.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 20:13:02,007 INFO L158 Benchmark]: RCFGBuilder took 351.29ms. Allocated memory is still 307.2MB. Free memory was 265.3MB in the beginning and 252.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-01 20:13:02,007 INFO L158 Benchmark]: TraceAbstraction took 4287.32ms. Allocated memory is still 307.2MB. Free memory was 252.2MB in the beginning and 199.9MB in the end (delta: 52.4MB). Peak memory consumption was 53.9MB. Max. memory is 8.0GB. [2022-03-01 20:13:02,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 183.5MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 423.64ms. Allocated memory was 183.5MB in the beginning and 307.2MB in the end (delta: 123.7MB). Free memory was 125.2MB in the beginning and 269.0MB in the end (delta: -143.8MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.61ms. Allocated memory is still 307.2MB. Free memory was 269.0MB in the beginning and 266.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.19ms. Allocated memory is still 307.2MB. Free memory was 266.9MB in the beginning and 265.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 351.29ms. Allocated memory is still 307.2MB. Free memory was 265.3MB in the beginning and 252.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4287.32ms. Allocated memory is still 307.2MB. Free memory was 252.2MB in the beginning and 199.9MB in the end (delta: 52.4MB). Peak memory consumption was 53.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 704]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 pthread_mutex_t lock; VAL [lock={3:0}] [L698] 0 pthread_cond_t cond; VAL [cond={4:0}, lock={3:0}] [L699] 0 int x; VAL [cond={4:0}, lock={3:0}, x=0] [L709] 0 pthread_t t; VAL [cond={4:0}, lock={3:0}, t={7:0}, x=0] [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={4:0}, lock={3:0}, pthread_create( &t, ((void *)0), thread, ((void *)0) )=-1, t={7:0}, x=0] [L713] 0 int i = 0; VAL [arg={0:0}, cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=1, lock={3:0}, t={7:0}, x=0] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=1, lock={3:0}, t={7:0}, x=0] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=1, lock={3:0}, t={7:0}, x=1] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=2, lock={3:0}, t={7:0}, x=1] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=2, lock={3:0}, t={7:0}, x=1] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=2, lock={3:0}, t={7:0}, x=2] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=3, lock={3:0}, t={7:0}, x=2] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=3, lock={3:0}, t={7:0}, x=2] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=3, lock={3:0}, t={7:0}, x=3] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=4, lock={3:0}, t={7:0}, x=3] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=4, lock={3:0}, t={7:0}, x=3] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=4, lock={3:0}, t={7:0}, x=4] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=5, lock={3:0}, t={7:0}, x=4] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=5, lock={3:0}, t={7:0}, x=4] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=5, lock={3:0}, t={7:0}, x=5] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=6, lock={3:0}, t={7:0}, x=5] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=6, lock={3:0}, t={7:0}, x=5] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=6, lock={3:0}, t={7:0}, x=6] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=7, lock={3:0}, t={7:0}, x=6] [L704] 1 !(x == 42) ? reach_error() : (void)0 VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=6] [L704] 1 reach_error() VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=6] - UnprovableResult [Line: 712]: 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 3 procedures, 86 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 1.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 44, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 638 NumberOfCodeBlocks, 613 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 670 ConstructedInterpolants, 0 QuantifiedInterpolants, 954 SizeOfPredicates, 12 NumberOfNonLiveVariables, 495 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 112/281 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! [2022-03-01 20:13:02,040 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 [2022-03-01 20:13:02,257 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...