/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 --traceabstraction.maximal.amount.of.steps.the.threads.are.allowed.to.take.successively 1 --traceabstraction.enable.heuristic.with.loops.as.step.type false --traceabstraction.considered.threads.and.their.maximal.amount.of.steps X --traceabstraction.defines.what.statements.are.considered.a.step.in.por GLOBAL_READ_WRITE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.orders-218013a [2023-05-04 16:49:30,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-05-04 16:49:30,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-05-04 16:49:30,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-05-04 16:49:30,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-05-04 16:49:30,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-05-04 16:49:30,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-05-04 16:49:30,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-05-04 16:49:30,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-05-04 16:49:30,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-05-04 16:49:30,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-05-04 16:49:30,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-05-04 16:49:30,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-05-04 16:49:30,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-05-04 16:49:30,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-05-04 16:49:30,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-05-04 16:49:30,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-05-04 16:49:30,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-05-04 16:49:30,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-05-04 16:49:30,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-05-04 16:49:30,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf [2023-05-04 16:49:30,560 INFO L113 SettingsManager]: Loading preferences was successful [2023-05-04 16:49:30,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-05-04 16:49:30,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-05-04 16:49:30,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-05-04 16:49:30,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-05-04 16:49:30,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-05-04 16:49:30,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-05-04 16:49:30,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-05-04 16:49:30,562 INFO L138 SettingsManager]: * Use SBE=true [2023-05-04 16:49:30,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-05-04 16:49:30,563 INFO L138 SettingsManager]: * sizeof long=4 [2023-05-04 16:49:30,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-05-04 16:49:30,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-05-04 16:49:30,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-05-04 16:49:30,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-05-04 16:49:30,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-05-04 16:49:30,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-05-04 16:49:30,564 INFO L138 SettingsManager]: * sizeof long double=12 [2023-05-04 16:49:30,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-05-04 16:49:30,564 INFO L138 SettingsManager]: * Use constant arrays=true [2023-05-04 16:49:30,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-05-04 16:49:30,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-05-04 16:49:30,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-05-04 16:49:30,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-05-04 16:49:30,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-05-04 16:49:30,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-04 16:49:30,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-05-04 16:49:30,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-05-04 16:49:30,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-05-04 16:49:30,565 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-05-04 16:49:30,565 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-05-04 16:49:30,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-05-04 16:49:30,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-05-04 16:49:30,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-05-04 16:49:30,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-05-04 16:49:30,566 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-05-04 16:49:30,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_THREAD_INSTANCE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Maximal amount of steps the threads are allowed to take successively -> 1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Enable heuristic with loops as step type -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Considered threads and their maximal amount of steps -> X Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Defines what statements are considered a step in POR -> GLOBAL_READ_WRITE [2023-05-04 16:49:30,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-05-04 16:49:30,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-05-04 16:49:30,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-05-04 16:49:30,801 INFO L271 PluginConnector]: Initializing CDTParser... [2023-05-04 16:49:30,801 INFO L275 PluginConnector]: CDTParser initialized [2023-05-04 16:49:30,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2023-05-04 16:49:30,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28189718a/d00097e28d284993b60a2d77f32e94fc/FLAG932b5a805 [2023-05-04 16:49:31,296 INFO L306 CDTParser]: Found 1 translation units. [2023-05-04 16:49:31,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2023-05-04 16:49:31,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28189718a/d00097e28d284993b60a2d77f32e94fc/FLAG932b5a805 [2023-05-04 16:49:31,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28189718a/d00097e28d284993b60a2d77f32e94fc [2023-05-04 16:49:31,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-05-04 16:49:31,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-05-04 16:49:31,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-05-04 16:49:31,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-05-04 16:49:31,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-05-04 16:49:31,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd24a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31, skipping insertion in model container [2023-05-04 16:49:31,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-05-04 16:49:31,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-05-04 16:49:31,665 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-ext/26_stack_cas_longest-1.i[31167,31180] [2023-05-04 16:49:31,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-04 16:49:31,693 INFO L203 MainTranslator]: Completed pre-run [2023-05-04 16:49:31,734 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-ext/26_stack_cas_longest-1.i[31167,31180] [2023-05-04 16:49:31,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-04 16:49:31,762 INFO L208 MainTranslator]: Completed translation [2023-05-04 16:49:31,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31 WrapperNode [2023-05-04 16:49:31,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-05-04 16:49:31,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-05-04 16:49:31,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-05-04 16:49:31,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-05-04 16:49:31,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,822 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 187 [2023-05-04 16:49:31,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-05-04 16:49:31,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-05-04 16:49:31,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-05-04 16:49:31,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-05-04 16:49:31,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-05-04 16:49:31,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-05-04 16:49:31,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-05-04 16:49:31,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-05-04 16:49:31,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (1/1) ... [2023-05-04 16:49:31,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-04 16:49:31,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 16:49:31,893 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) [2023-05-04 16:49:31,912 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 [2023-05-04 16:49:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-05-04 16:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-05-04 16:49:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-05-04 16:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-05-04 16:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-05-04 16:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-05-04 16:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-05-04 16:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-05-04 16:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-05-04 16:49:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-05-04 16:49:31,926 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-05-04 16:49:32,051 INFO L235 CfgBuilder]: Building ICFG [2023-05-04 16:49:32,059 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-05-04 16:49:32,343 INFO L276 CfgBuilder]: Performing block encoding [2023-05-04 16:49:32,442 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-05-04 16:49:32,443 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-05-04 16:49:32,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.05 04:49:32 BoogieIcfgContainer [2023-05-04 16:49:32,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-05-04 16:49:32,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-05-04 16:49:32,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-05-04 16:49:32,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-05-04 16:49:32,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.05 04:49:31" (1/3) ... [2023-05-04 16:49:32,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607de55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.05 04:49:32, skipping insertion in model container [2023-05-04 16:49:32,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.05 04:49:31" (2/3) ... [2023-05-04 16:49:32,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607de55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.05 04:49:32, skipping insertion in model container [2023-05-04 16:49:32,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.05 04:49:32" (3/3) ... [2023-05-04 16:49:32,453 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i [2023-05-04 16:49:32,461 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-05-04 16:49:32,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-05-04 16:49:32,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-05-04 16:49:32,468 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-05-04 16:49:32,556 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-05-04 16:49:32,591 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 16:49:32,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-04 16:49:32,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-04 16:49:32,594 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) [2023-05-04 16:49:32,595 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 [2023-05-04 16:49:32,630 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-04 16:49:32,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-05-04 16:49:32,656 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;@38d600e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-04 16:49:32,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-04 16:49:32,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 16:49:32,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 16:49:32,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1848896860, now seen corresponding path program 1 times [2023-05-04 16:49:32,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 16:49:32,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370970414] [2023-05-04 16:49:32,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 16:49:32,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 16:49:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 16:49:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-05-04 16:49:32,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 16:49:32,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370970414] [2023-05-04 16:49:32,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370970414] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 16:49:32,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 16:49:32,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-05-04 16:49:33,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072117547] [2023-05-04 16:49:33,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 16:49:33,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-05-04 16:49:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 16:49:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-05-04 16:49:33,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-05-04 16:49:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 16:49:33,024 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 16:49:33,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2023-05-04 16:49:33,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 16:49:33,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 16:49:33,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-05-04 16:49:33,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 16:49:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 16:49:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1573382409, now seen corresponding path program 1 times [2023-05-04 16:49:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 16:49:33,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636259257] [2023-05-04 16:49:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 16:49:33,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 16:49:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-04 16:49:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-04 16:49:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-04 16:49:33,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636259257] [2023-05-04 16:49:33,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636259257] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-04 16:49:33,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-04 16:49:33,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-05-04 16:49:33,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659652981] [2023-05-04 16:49:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-04 16:49:33,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-05-04 16:49:33,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-04 16:49:33,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-05-04 16:49:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-05-04 16:49:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 16:49:33,293 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-04 16:49:33,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-05-04 16:49:33,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 16:49:33,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-04 16:49:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-04 16:49:33,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-04 16:49:33,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-05-04 16:49:33,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-04 16:49:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-04 16:49:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash 982461421, now seen corresponding path program 1 times [2023-05-04 16:49:33,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-04 16:49:33,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744900366] [2023-05-04 16:49:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-04 16:49:33,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-04 16:49:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-04 16:49:33,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-05-04 16:49:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-04 16:49:33,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-05-04 16:49:33,582 INFO L359 BasicCegarLoop]: Counterexample is feasible [2023-05-04 16:49:33,583 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-05-04 16:49:33,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-05-04 16:49:33,594 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-05-04 16:49:33,596 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was UNSAFE (1/2) [2023-05-04 16:49:33,599 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-05-04 16:49:33,599 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-05-04 16:49:33,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.05 04:49:33 BasicIcfg [2023-05-04 16:49:33,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-05-04 16:49:33,695 INFO L158 Benchmark]: Toolchain (without parser) took 2348.38ms. Allocated memory is still 237.0MB. Free memory was 210.3MB in the beginning and 172.5MB in the end (delta: 37.9MB). Peak memory consumption was 94.2MB. Max. memory is 8.0GB. [2023-05-04 16:49:33,695 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-05-04 16:49:33,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.13ms. Allocated memory is still 237.0MB. Free memory was 210.0MB in the beginning and 196.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-05-04 16:49:33,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.13ms. Allocated memory is still 237.0MB. Free memory was 196.4MB in the beginning and 193.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-05-04 16:49:33,696 INFO L158 Benchmark]: Boogie Preprocessor took 43.60ms. Allocated memory is still 237.0MB. Free memory was 193.8MB in the beginning and 191.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-05-04 16:49:33,696 INFO L158 Benchmark]: RCFGBuilder took 577.65ms. Allocated memory is still 237.0MB. Free memory was 191.7MB in the beginning and 155.5MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-05-04 16:49:33,696 INFO L158 Benchmark]: TraceAbstraction took 1247.48ms. Allocated memory is still 237.0MB. Free memory was 154.0MB in the beginning and 172.5MB in the end (delta: -18.5MB). Peak memory consumption was 37.6MB. Max. memory is 8.0GB. [2023-05-04 16:49:33,699 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 174.1MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 415.13ms. Allocated memory is still 237.0MB. Free memory was 210.0MB in the beginning and 196.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.13ms. Allocated memory is still 237.0MB. Free memory was 196.4MB in the beginning and 193.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.60ms. Allocated memory is still 237.0MB. Free memory was 193.8MB in the beginning and 191.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 577.65ms. Allocated memory is still 237.0MB. Free memory was 191.7MB in the beginning and 155.5MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1247.48ms. Allocated memory is still 237.0MB. Free memory was 154.0MB in the beginning and 172.5MB in the end (delta: -18.5MB). Peak memory consumption was 37.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1148, independent: 1009, independent conditional: 28, independent unconditional: 981, dependent: 139, dependent conditional: 136, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 28, independent unconditional: 981, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 28, independent unconditional: 981, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 0, independent unconditional: 1009, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 0, independent unconditional: 1009, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 0, independent unconditional: 1009, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 974, independent: 971, independent conditional: 0, independent unconditional: 971, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 974, independent: 970, independent conditional: 0, independent unconditional: 970, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 4, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 56, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 1012, independent: 38, independent conditional: 0, independent unconditional: 38, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 974, unknown conditional: 0, unknown unconditional: 974] , Statistics on independence cache: Total cache size (in pairs): 974, Positive cache size: 971, Positive conditional cache size: 0, Positive unconditional cache size: 971, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 136 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 162, Number of trivial persistent sets: 162, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 984, independent: 981, independent conditional: 0, independent unconditional: 981, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1148, independent: 1009, independent conditional: 28, independent unconditional: 981, dependent: 139, dependent conditional: 136, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 28, independent unconditional: 981, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 28, independent unconditional: 981, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 0, independent unconditional: 1009, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 0, independent unconditional: 1009, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1012, independent: 1009, independent conditional: 0, independent unconditional: 1009, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 974, independent: 971, independent conditional: 0, independent unconditional: 971, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 974, independent: 970, independent conditional: 0, independent unconditional: 970, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 4, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 56, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 1012, independent: 38, independent conditional: 0, independent unconditional: 38, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 974, unknown conditional: 0, unknown unconditional: 974] , Statistics on independence cache: Total cache size (in pairs): 974, Positive cache size: 971, Positive conditional cache size: 0, Positive unconditional cache size: 971, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 136 - CounterExampleResult [Line: 759]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L714] 0 int memory[(2*960+1)]; [L717] 0 int top; VAL [top={3:0}] [L769] 0 int m2 = 0; VAL [m2={4:0}, top={3:0}] [L715] 0 int next_alloc_idx = 1; VAL [m2={4:0}, next_alloc_idx=1, top={3:0}] [L770] 0 int state = 0; VAL [m2={4:0}, next_alloc_idx=1, state=0, top={3:0}] [L716] 0 int m = 0; VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, top={3:0}] [L788] 0 pthread_t t; VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, t={8:0}, top={3:0}] [L789] COND TRUE 0 1 VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, t={8:0}, top={3:0}] [L789] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, pthread_create(&t, 0, thr1, 0)=-1, state=0, t={8:0}, top={3:0}] [L789] COND TRUE 0 1 VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, t={8:0}, top={3:0}] [L789] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, pthread_create(&t, 0, thr1, 0)=0, state=0, t={8:0}, top={3:0}] [L773] CALL 1 __VERIFIER_atomic_acquire(&m2) [L691] EXPR 1 \read(*m) [L691] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L691] RET 1 assume_abort_if_not(*m==0) [L692] 1 *m = 1 [L773] RET 1 __VERIFIER_atomic_acquire(&m2) [L776] 1 case 0: VAL [arg={0:0}, arg={0:0}, m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, top={3:0}] [L777] CALL 1 EBStack_init() [L732] 1 top = 0 VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, top={3:0}] [L777] RET 1 EBStack_init() [L778] 1 state = 1 VAL [arg={0:0}, arg={0:0}, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L779] 1 case 1: VAL [arg={0:0}, arg={0:0}, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L780] CALL 1 __VERIFIER_atomic_release(&m2) [L696] EXPR 1 \read(*m) [L696] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L696] RET 1 assume_abort_if_not(*m==1) [L697] 1 *m = 0 [L780] RET 1 __VERIFIER_atomic_release(&m2) [L781] CALL 1 push_loop() [L762] 1 int r = -1; VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, r=-1, state=1, top={3:0}] [L763] 1 int arg = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, arg=0, m={5:0}, m2={4:0}, next_alloc_idx=1, r=-1, state=1, top={3:0}] [L764] COND TRUE 1 1 VAL [arg=0, m={5:0}, m2={4:0}, next_alloc_idx=1, r=-1, state=1, top={3:0}] [L765] CALL, EXPR 1 push(arg) [L741] 1 int oldTop = -1, newTop = -1, casret = -1; VAL [\old(d)=0, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=-1, next_alloc_idx=1, oldTop=-1, state=1, top={3:0}] [L742] CALL, EXPR 1 index_malloc() [L719] 1 int curr_alloc_idx = -1; VAL [curr_alloc_idx=-1, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L720] CALL 1 __VERIFIER_atomic_acquire(&m) [L691] EXPR 1 \read(*m) [L691] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L691] RET 1 assume_abort_if_not(*m==0) [L692] 1 *m = 1 [L720] RET 1 __VERIFIER_atomic_acquire(&m) [L721] COND FALSE 1 !(next_alloc_idx+2-1 > (2*960+1)) VAL [curr_alloc_idx=-1, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L725] 1 curr_alloc_idx = next_alloc_idx VAL [curr_alloc_idx=1, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L726] 1 next_alloc_idx += 2 VAL [curr_alloc_idx=1, m={5:0}, m2={4:0}, next_alloc_idx=3, state=1, top={3:0}] [L727] CALL 1 __VERIFIER_atomic_release(&m) [L696] EXPR 1 \read(*m) [L696] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L696] RET 1 assume_abort_if_not(*m==1) [L697] 1 *m = 0 [L727] RET 1 __VERIFIER_atomic_release(&m) [L729] 1 return curr_alloc_idx; VAL [\result=1, curr_alloc_idx=1, m={5:0}, m2={4:0}, next_alloc_idx=3, state=1, top={3:0}] [L742] RET, EXPR 1 index_malloc() [L742] 1 newTop = index_malloc() VAL [\old(d)=0, casret={6:0}, d=0, index_malloc()=1, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L743] COND FALSE 1 !(newTop == 0) VAL [\old(d)=0, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L746] 1 memory[newTop+0] = d VAL [\old(d)=0, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L747] COND TRUE 1 1 VAL [\old(d)=0, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L748] EXPR 1 \read(top) VAL [\old(d)=0, \read(top)=0, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L748] 1 oldTop = top VAL [\old(d)=0, \read(top)=0, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L749] 1 memory[newTop+1] = oldTop VAL [\old(d)=0, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L750] CALL 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L705] EXPR 1 \read(*v) [L705] COND TRUE 1 *v == e [L707] 1 *v = u [L707] 1 *r = 1 [L750] RET 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L751] EXPR 1 \read(casret) VAL [\old(d)=0, \read(casret)=1, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L751] COND TRUE 1 casret==1 VAL [\old(d)=0, \read(casret)=1, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L752] 1 return 1; VAL [\old(d)=0, \result=1, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L741] 1 int oldTop = -1, newTop = -1, casret = -1; VAL [\old(d)=0, \result=1, casret={6:0}, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L752] 1 return 1; VAL [\old(d)=0, \result=1, d=0, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L765] RET, EXPR 1 push(arg) [L765] 1 r = push(arg) VAL [arg=0, m={5:0}, m2={4:0}, next_alloc_idx=3, push(arg)=1, r=1, state=1, top={3:0}] [L766] CALL 1 __VERIFIER_atomic_assert(r) [L759] EXPR 1 !r || !isEmpty() [L759] CALL, EXPR 1 isEmpty() [L735] EXPR 1 \read(top) [L735] COND FALSE 1 !(top == 0) [L738] 1 return 0; [L759] RET, EXPR 1 isEmpty() [L759] EXPR 1 !r || !isEmpty() [L759] COND TRUE 1 !(!(!r || !isEmpty())) [L759] 1 reach_error() VAL [\old(r)=1, m={5:0}, m2={4:0}, next_alloc_idx=3, r=1, state=1, top={3:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 191 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, 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: 7, 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, 0.2s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 235 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 6/6 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! [2023-05-04 16:49:33,723 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 [2023-05-04 16:49:33,929 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...