/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/28_buggy_simple_loop1_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.orders-32214ab [2023-05-20 12:59:05,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-05-20 12:59:05,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-05-20 12:59:05,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-05-20 12:59:06,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-05-20 12:59:06,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-05-20 12:59:06,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-05-20 12:59:06,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-05-20 12:59:06,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-05-20 12:59:06,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-05-20 12:59:06,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-05-20 12:59:06,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-05-20 12:59:06,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-05-20 12:59:06,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-05-20 12:59:06,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-05-20 12:59:06,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-05-20 12:59:06,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-05-20 12:59:06,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-05-20 12:59:06,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-05-20 12:59:06,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-05-20 12:59:06,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-05-20 12:59:06,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-05-20 12:59:06,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-05-20 12:59:06,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-05-20 12:59:06,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-05-20 12:59:06,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf [2023-05-20 12:59:06,076 INFO L113 SettingsManager]: Loading preferences was successful [2023-05-20 12:59:06,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-05-20 12:59:06,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-05-20 12:59:06,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-05-20 12:59:06,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-05-20 12:59:06,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-05-20 12:59:06,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-05-20 12:59:06,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-05-20 12:59:06,079 INFO L138 SettingsManager]: * Use SBE=true [2023-05-20 12:59:06,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-05-20 12:59:06,080 INFO L138 SettingsManager]: * sizeof long=4 [2023-05-20 12:59:06,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-05-20 12:59:06,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-05-20 12:59:06,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-05-20 12:59:06,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-05-20 12:59:06,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-05-20 12:59:06,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-05-20 12:59:06,081 INFO L138 SettingsManager]: * sizeof long double=12 [2023-05-20 12:59:06,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-05-20 12:59:06,081 INFO L138 SettingsManager]: * Use constant arrays=true [2023-05-20 12:59:06,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-05-20 12:59:06,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-05-20 12:59:06,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-05-20 12:59:06,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-05-20 12:59:06,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-05-20 12:59:06,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-20 12:59:06,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-05-20 12:59:06,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-05-20 12:59:06,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-05-20 12:59:06,083 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-05-20 12:59:06,083 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-05-20 12:59:06,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-05-20 12:59:06,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-05-20 12:59:06,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-05-20 12:59:06,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-05-20 12:59:06,084 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-05-20 12:59:06,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_THREAD_INSTANCE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Maximal amount of steps the threads are allowed to take successively -> 1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Enable heuristic with loops as step type -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Considered threads and their maximal amount of steps -> X Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Defines what statements are considered a step in POR -> GLOBAL_READ_WRITE [2023-05-20 12:59:06,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-05-20 12:59:06,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-05-20 12:59:06,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-05-20 12:59:06,373 INFO L271 PluginConnector]: Initializing CDTParser... [2023-05-20 12:59:06,374 INFO L275 PluginConnector]: CDTParser initialized [2023-05-20 12:59:06,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-05-20 12:59:06,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee8fe3b4/216ba77e257b4eb4ae0132975bd3bf4f/FLAGf86766166 [2023-05-20 12:59:06,967 INFO L306 CDTParser]: Found 1 translation units. [2023-05-20 12:59:06,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-05-20 12:59:06,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee8fe3b4/216ba77e257b4eb4ae0132975bd3bf4f/FLAGf86766166 [2023-05-20 12:59:07,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee8fe3b4/216ba77e257b4eb4ae0132975bd3bf4f [2023-05-20 12:59:07,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-05-20 12:59:07,448 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-05-20 12:59:07,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-05-20 12:59:07,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-05-20 12:59:07,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-05-20 12:59:07,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e05b905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07, skipping insertion in model container [2023-05-20 12:59:07,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-05-20 12:59:07,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-05-20 12:59:07,801 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/28_buggy_simple_loop1_vf.i[30287,30300] [2023-05-20 12:59:07,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-20 12:59:07,826 INFO L203 MainTranslator]: Completed pre-run [2023-05-20 12:59:07,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-05-20 12:59:07,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-20 12:59:07,900 INFO L208 MainTranslator]: Completed translation [2023-05-20 12:59:07,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07 WrapperNode [2023-05-20 12:59:07,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-05-20 12:59:07,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-05-20 12:59:07,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-05-20 12:59:07,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-05-20 12:59:07,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,945 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-05-20 12:59:07,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-05-20 12:59:07,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-05-20 12:59:07,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-05-20 12:59:07,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-05-20 12:59:07,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,966 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-05-20 12:59:07,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-05-20 12:59:07,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-05-20 12:59:07,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-05-20 12:59:07,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (1/1) ... [2023-05-20 12:59:07,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-20 12:59:08,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 12:59:08,020 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) [2023-05-20 12:59:08,045 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 [2023-05-20 12:59:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-05-20 12:59:08,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-05-20 12:59:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-05-20 12:59:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-05-20 12:59:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-05-20 12:59:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-05-20 12:59:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-05-20 12:59:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-05-20 12:59:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-05-20 12:59:08,064 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-05-20 12:59:08,215 INFO L235 CfgBuilder]: Building ICFG [2023-05-20 12:59:08,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-05-20 12:59:08,423 INFO L276 CfgBuilder]: Performing block encoding [2023-05-20 12:59:08,429 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-05-20 12:59:08,430 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-05-20 12:59:08,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.05 12:59:08 BoogieIcfgContainer [2023-05-20 12:59:08,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-05-20 12:59:08,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-05-20 12:59:08,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-05-20 12:59:08,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-05-20 12:59:08,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.05 12:59:07" (1/3) ... [2023-05-20 12:59:08,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf6271d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.05 12:59:08, skipping insertion in model container [2023-05-20 12:59:08,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 12:59:07" (2/3) ... [2023-05-20 12:59:08,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf6271d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.05 12:59:08, skipping insertion in model container [2023-05-20 12:59:08,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.05 12:59:08" (3/3) ... [2023-05-20 12:59:08,445 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-05-20 12:59:08,453 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-05-20 12:59:08,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-05-20 12:59:08,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-05-20 12:59:08,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-05-20 12:59:08,567 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-05-20 12:59:08,612 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 12:59:08,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-20 12:59:08,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 12:59:08,618 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) [2023-05-20 12:59:08,640 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 [2023-05-20 12:59:08,661 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-20 12:59:08,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-05-20 12:59:08,704 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;@40ea97e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 12:59:08,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-20 12:59:08,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 12:59:08,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 12:59:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1448508634, now seen corresponding path program 1 times [2023-05-20 12:59:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 12:59:08,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998831414] [2023-05-20 12:59:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 12:59:08,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 12:59:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 12:59:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-05-20 12:59:08,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 12:59:08,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998831414] [2023-05-20 12:59:08,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998831414] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 12:59:08,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-20 12:59:08,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-05-20 12:59:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95701604] [2023-05-20 12:59:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 12:59:08,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-05-20 12:59:08,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 12:59:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-05-20 12:59:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-05-20 12:59:09,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,015 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 12:59:09,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2023-05-20 12:59:09,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-05-20 12:59:09,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 12:59:09,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 12:59:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash 322347319, now seen corresponding path program 1 times [2023-05-20 12:59:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 12:59:09,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583348205] [2023-05-20 12:59:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 12:59:09,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 12:59:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 12:59:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-20 12:59:09,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 12:59:09,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583348205] [2023-05-20 12:59:09,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583348205] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 12:59:09,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-20 12:59:09,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-05-20 12:59:09,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75214032] [2023-05-20 12:59:09,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 12:59:09,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-05-20 12:59:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 12:59:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-05-20 12:59:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-05-20 12:59:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,240 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 12:59:09,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2023-05-20 12:59:09,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-20 12:59:09,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-05-20 12:59:09,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 12:59:09,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 12:59:09,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1312860210, now seen corresponding path program 1 times [2023-05-20 12:59:09,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 12:59:09,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474276053] [2023-05-20 12:59:09,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 12:59:09,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 12:59:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 12:59:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-20 12:59:09,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 12:59:09,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474276053] [2023-05-20 12:59:09,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474276053] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 12:59:09,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836146872] [2023-05-20 12:59:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 12:59:09,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 12:59:09,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 12:59:09,533 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) [2023-05-20 12:59:09,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-05-20 12:59:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 12:59:09,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-05-20 12:59:09,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 12:59:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-20 12:59:09,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-20 12:59:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-20 12:59:09,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836146872] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-20 12:59:09,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-20 12:59:09,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-05-20 12:59:09,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653508422] [2023-05-20 12:59:09,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-20 12:59:09,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-05-20 12:59:09,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 12:59:09,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-05-20 12:59:09,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-05-20 12:59:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,723 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 12:59:09,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 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) [2023-05-20 12:59:09,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-20 12:59:09,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-20 12:59:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-05-20 12:59:09,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-05-20 12:59:10,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-05-20 12:59:10,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 12:59:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 12:59:10,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1000257409, now seen corresponding path program 1 times [2023-05-20 12:59:10,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 12:59:10,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953907830] [2023-05-20 12:59:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 12:59:10,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 12:59:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 12:59:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-20 12:59:10,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 12:59:10,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953907830] [2023-05-20 12:59:10,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953907830] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 12:59:10,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526428728] [2023-05-20 12:59:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 12:59:10,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 12:59:10,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 12:59:10,227 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) [2023-05-20 12:59:10,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-05-20 12:59:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 12:59:10,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2023-05-20 12:59:10,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 12:59:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-20 12:59:10,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-20 12:59:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-05-20 12:59:10,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526428728] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-20 12:59:10,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-20 12:59:10,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-05-20 12:59:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387513747] [2023-05-20 12:59:10,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-20 12:59:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-05-20 12:59:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 12:59:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-05-20 12:59:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-05-20 12:59:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:10,399 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 12:59:10,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2023-05-20 12:59:10,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:10,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-20 12:59:10,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-05-20 12:59:10,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 12:59:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-20 12:59:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-05-20 12:59:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-05-20 12:59:10,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-05-20 12:59:10,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 12:59:10,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 12:59:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 12:59:10,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1147364319, now seen corresponding path program 1 times [2023-05-20 12:59:10,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 12:59:10,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480793577] [2023-05-20 12:59:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 12:59:10,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 12:59:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-20 12:59:10,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-05-20 12:59:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-20 12:59:11,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-05-20 12:59:11,016 INFO L359 BasicCegarLoop]: Counterexample is feasible [2023-05-20 12:59:11,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-05-20 12:59:11,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-05-20 12:59:11,034 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-05-20 12:59:11,035 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was UNSAFE (1/2) [2023-05-20 12:59:11,038 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-05-20 12:59:11,038 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-05-20 12:59:11,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.05 12:59:11 BasicIcfg [2023-05-20 12:59:11,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-05-20 12:59:11,091 INFO L158 Benchmark]: Toolchain (without parser) took 3638.07ms. Allocated memory is still 164.6MB. Free memory was 138.3MB in the beginning and 115.2MB in the end (delta: 23.1MB). Peak memory consumption was 22.8MB. Max. memory is 8.0GB. [2023-05-20 12:59:11,092 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-05-20 12:59:11,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.50ms. Allocated memory is still 164.6MB. Free memory was 138.1MB in the beginning and 132.5MB in the end (delta: 5.6MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2023-05-20 12:59:11,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.82ms. Allocated memory is still 164.6MB. Free memory was 132.5MB in the beginning and 130.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-05-20 12:59:11,092 INFO L158 Benchmark]: Boogie Preprocessor took 22.82ms. Allocated memory is still 164.6MB. Free memory was 130.8MB in the beginning and 129.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-05-20 12:59:11,093 INFO L158 Benchmark]: RCFGBuilder took 461.74ms. Allocated memory is still 164.6MB. Free memory was 129.3MB in the beginning and 116.4MB in the end (delta: 12.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-05-20 12:59:11,093 INFO L158 Benchmark]: TraceAbstraction took 2651.53ms. Allocated memory is still 164.6MB. Free memory was 115.4MB in the beginning and 115.2MB in the end (delta: 117.5kB). Peak memory consumption was 443.7kB. Max. memory is 8.0GB. [2023-05-20 12:59:11,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 446.50ms. Allocated memory is still 164.6MB. Free memory was 138.1MB in the beginning and 132.5MB in the end (delta: 5.6MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.82ms. Allocated memory is still 164.6MB. Free memory was 132.5MB in the beginning and 130.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.82ms. Allocated memory is still 164.6MB. Free memory was 130.8MB in the beginning and 129.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 461.74ms. Allocated memory is still 164.6MB. Free memory was 129.3MB in the beginning and 116.4MB in the end (delta: 12.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2651.53ms. Allocated memory is still 164.6MB. Free memory was 115.4MB in the beginning and 115.2MB in the end (delta: 117.5kB). Peak memory consumption was 443.7kB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 761, independent: 594, independent conditional: 46, independent unconditional: 548, dependent: 167, dependent conditional: 166, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 595, independent: 594, independent conditional: 46, independent unconditional: 548, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 595, independent: 594, independent conditional: 46, independent unconditional: 548, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 595, independent: 594, independent conditional: 0, independent unconditional: 594, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 595, independent: 594, independent conditional: 0, independent unconditional: 594, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 595, independent: 594, independent conditional: 0, independent unconditional: 594, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 539, independent: 538, independent conditional: 0, independent unconditional: 538, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 539, independent: 537, independent conditional: 0, independent unconditional: 537, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 2, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 595, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 539, unknown conditional: 0, unknown unconditional: 539] , Statistics on independence cache: Total cache size (in pairs): 539, Positive cache size: 538, Positive conditional cache size: 0, Positive unconditional cache size: 538, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, 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: 166 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 82, Number of trivial persistent sets: 82, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 549, independent: 548, independent conditional: 0, independent unconditional: 548, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 761, independent: 594, independent conditional: 46, independent unconditional: 548, dependent: 167, dependent conditional: 166, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 595, independent: 594, independent conditional: 46, independent unconditional: 548, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 595, independent: 594, independent conditional: 46, independent unconditional: 548, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 595, independent: 594, independent conditional: 0, independent unconditional: 594, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 595, independent: 594, independent conditional: 0, independent unconditional: 594, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 595, independent: 594, independent conditional: 0, independent unconditional: 594, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 539, independent: 538, independent conditional: 0, independent unconditional: 538, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 539, independent: 537, independent conditional: 0, independent unconditional: 537, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 2, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 595, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 539, unknown conditional: 0, unknown unconditional: 539] , Statistics on independence cache: Total cache size (in pairs): 539, Positive cache size: 538, Positive conditional cache size: 0, Positive unconditional cache size: 538, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, 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: 166 - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 VAL [t={3:0}] [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, pthread_create(&t, 0, thr1, 0)=-1, t={3:0}] [L701] COND TRUE 0 1 VAL [arg={0:0}, t={3:0}] [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, pthread_create(&t, 0, thr1, 0)=0, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=4294967296, arg={0:0}, arg={0:0}, x=4294967296] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=4294967301, arg={0:0}, arg={0:0}, x=4294967296, y=4294967301] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=5, arg={0:0}, arg={0:0}, x=4294967296, y=4294967301, z=5] [L687] 1 int i, j=1, k=1; VAL [arg={0:0}, arg={0:0}, j=1, k=1, x=4294967296, y=4294967301, z=5] [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1, x=4294967296, y=4294967301, z=5] [L688] COND FALSE 1 !(i