./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:03:22,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:03:22,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:03:22,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:03:22,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:03:22,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:03:22,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:03:22,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:03:22,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:03:22,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:03:22,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:03:22,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:03:22,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:03:22,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:03:22,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:03:22,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:03:22,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:03:22,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:03:22,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:03:22,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:03:22,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:03:22,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:03:22,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:03:22,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:03:22,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:03:22,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:03:22,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:03:22,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:03:22,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:03:22,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:03:22,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:03:22,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:03:22,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:03:22,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:03:22,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:03:22,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:03:22,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:03:22,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:03:22,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:03:22,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:03:22,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:03:22,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:03:22,759 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:03:22,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:03:22,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:03:22,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:03:22,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:03:22,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:03:22,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:03:22,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:03:22,762 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:03:22,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:03:22,763 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:03:22,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:03:22,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:03:22,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:03:22,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:03:22,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:03:22,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:03:22,765 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:03:22,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:03:22,765 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:03:22,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:03:22,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:03:22,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:03:22,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:03:22,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:03:22,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:03:22,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:03:22,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:03:22,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:03:22,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:03:22,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:03:22,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:03:22,768 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:03:22,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:03:22,768 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:03:22,769 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 [2023-02-16 01:03:22,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:03:22,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:03:22,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:03:22,985 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:03:22,985 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:03:22,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2023-02-16 01:03:24,164 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:03:24,448 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:03:24,449 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2023-02-16 01:03:24,459 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d587345a7/d1639347af054f3f9c00d47d2c84ef1a/FLAG57386007e [2023-02-16 01:03:24,469 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d587345a7/d1639347af054f3f9c00d47d2c84ef1a [2023-02-16 01:03:24,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:03:24,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:03:24,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:03:24,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:03:24,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:03:24,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fd1a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24, skipping insertion in model container [2023-02-16 01:03:24,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:03:24,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:03:24,805 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2023-02-16 01:03:24,809 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2023-02-16 01:03:24,810 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2023-02-16 01:03:24,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:03:24,825 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:03:24,874 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2023-02-16 01:03:24,875 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2023-02-16 01:03:24,875 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2023-02-16 01:03:24,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:03:24,907 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:03:24,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24 WrapperNode [2023-02-16 01:03:24,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:03:24,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:03:24,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:03:24,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:03:24,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,958 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 129 [2023-02-16 01:03:24,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:03:24,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:03:24,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:03:24,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:03:24,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:25,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:25,008 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:25,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:25,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:03:25,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:03:25,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:03:25,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:03:25,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:25,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:03:25,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:25,041 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) [2023-02-16 01:03:25,048 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 [2023-02-16 01:03:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-16 01:03:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-16 01:03:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-02-16 01:03:25,088 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-02-16 01:03:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 01:03:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-16 01:03:25,088 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-16 01:03:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:03:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 01:03:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-16 01:03:25,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-16 01:03:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 01:03:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 01:03:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 01:03:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:03:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-16 01:03:25,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-16 01:03:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:03:25,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:03:25,285 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:03:25,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:03:25,626 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:03:25,632 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:03:25,633 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 01:03:25,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:03:25 BoogieIcfgContainer [2023-02-16 01:03:25,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:03:25,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:03:25,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:03:25,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:03:25,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:03:24" (1/3) ... [2023-02-16 01:03:25,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ac243a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:03:25, skipping insertion in model container [2023-02-16 01:03:25,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (2/3) ... [2023-02-16 01:03:25,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ac243a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:03:25, skipping insertion in model container [2023-02-16 01:03:25,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:03:25" (3/3) ... [2023-02-16 01:03:25,642 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2023-02-16 01:03:25,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:03:25,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-16 01:03:25,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:03:25,704 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=PETRI_NET, 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;@30976160, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:03:25,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-16 01:03:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 01:03:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:03:25,713 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:25,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:25,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:25,718 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2023-02-16 01:03:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324438713] [2023-02-16 01:03:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 01:03:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:25,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:25,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324438713] [2023-02-16 01:03:25,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324438713] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:25,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:25,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:03:25,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613356713] [2023-02-16 01:03:25,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:25,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:03:25,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:03:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:03:25,974 INFO L87 Difference]: Start difference. First operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 01:03:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:26,141 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2023-02-16 01:03:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:03:26,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-02-16 01:03:26,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:26,153 INFO L225 Difference]: With dead ends: 147 [2023-02-16 01:03:26,153 INFO L226 Difference]: Without dead ends: 76 [2023-02-16 01:03:26,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:03:26,160 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:26,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 74 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:03:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-16 01:03:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2023-02-16 01:03:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 01:03:26,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-02-16 01:03:26,195 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2023-02-16 01:03:26,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:26,195 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-02-16 01:03:26,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 01:03:26,196 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-02-16 01:03:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:03:26,197 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:26,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:26,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:03:26,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:26,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:26,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2023-02-16 01:03:26,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:26,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133730970] [2023-02-16 01:03:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:26,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 01:03:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:26,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133730970] [2023-02-16 01:03:26,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133730970] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:26,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:26,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 01:03:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312561073] [2023-02-16 01:03:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:26,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:03:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:26,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:03:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:03:26,400 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:26,596 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2023-02-16 01:03:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 01:03:26,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-02-16 01:03:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:26,599 INFO L225 Difference]: With dead ends: 82 [2023-02-16 01:03:26,599 INFO L226 Difference]: Without dead ends: 80 [2023-02-16 01:03:26,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-16 01:03:26,600 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:26,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 141 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:03:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-16 01:03:26,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2023-02-16 01:03:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 51 states have internal predecessors, (56), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2023-02-16 01:03:26,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2023-02-16 01:03:26,623 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2023-02-16 01:03:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:26,623 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2023-02-16 01:03:26,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2023-02-16 01:03:26,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:03:26,624 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:26,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:26,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 01:03:26,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:26,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:26,625 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2023-02-16 01:03:26,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:26,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678842048] [2023-02-16 01:03:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:26,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 01:03:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:26,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:26,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678842048] [2023-02-16 01:03:26,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678842048] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:26,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:26,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 01:03:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748999302] [2023-02-16 01:03:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 01:03:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 01:03:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:03:26,984 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:27,470 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2023-02-16 01:03:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 01:03:27,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-02-16 01:03:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:27,472 INFO L225 Difference]: With dead ends: 206 [2023-02-16 01:03:27,472 INFO L226 Difference]: Without dead ends: 145 [2023-02-16 01:03:27,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-16 01:03:27,474 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 142 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:27,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 168 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 01:03:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-16 01:03:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2023-02-16 01:03:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 86 states have (on average 1.186046511627907) internal successors, (102), 92 states have internal predecessors, (102), 18 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (29), 18 states have call predecessors, (29), 18 states have call successors, (29) [2023-02-16 01:03:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-16 01:03:27,490 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 28 [2023-02-16 01:03:27,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:27,491 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-16 01:03:27,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:27,492 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-16 01:03:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-16 01:03:27,494 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:27,495 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:27,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 01:03:27,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2023-02-16 01:03:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:27,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910193520] [2023-02-16 01:03:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:27,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-16 01:03:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-16 01:03:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-16 01:03:27,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:27,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910193520] [2023-02-16 01:03:27,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910193520] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:27,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951814205] [2023-02-16 01:03:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:27,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:27,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:27,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:03:27,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:03:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:03:27,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-16 01:03:27,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:03:27,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951814205] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:27,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:03:27,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-02-16 01:03:27,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34596990] [2023-02-16 01:03:27,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:27,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:03:27,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:27,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:03:27,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:03:27,971 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 01:03:27,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:27,996 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2023-02-16 01:03:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:03:28,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2023-02-16 01:03:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:28,003 INFO L225 Difference]: With dead ends: 219 [2023-02-16 01:03:28,003 INFO L226 Difference]: Without dead ends: 126 [2023-02-16 01:03:28,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:03:28,005 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:28,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:03:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-16 01:03:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-02-16 01:03:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 96 states have internal predecessors, (107), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (30), 20 states have call predecessors, (30), 18 states have call successors, (30) [2023-02-16 01:03:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2023-02-16 01:03:28,020 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 72 [2023-02-16 01:03:28,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:28,021 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2023-02-16 01:03:28,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 01:03:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2023-02-16 01:03:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-16 01:03:28,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:28,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:28,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 01:03:28,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:28,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2023-02-16 01:03:28,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:28,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088566660] [2023-02-16 01:03:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:31,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:31,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 01:03:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:03:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-16 01:03:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 01:03:31,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:31,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088566660] [2023-02-16 01:03:31,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088566660] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184418981] [2023-02-16 01:03:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:31,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:31,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:31,829 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) [2023-02-16 01:03:31,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:03:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:31,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 202 conjunts are in the unsatisfiable core [2023-02-16 01:03:32,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:32,319 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:03:32,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:03:32,525 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-16 01:03:32,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-02-16 01:03:32,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:32,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:34,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:34,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:34,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:34,321 INFO L321 Elim1Store]: treesize reduction 158, result has 24.0 percent of original size [2023-02-16 01:03:34,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 204 treesize of output 165 [2023-02-16 01:03:34,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:34,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:34,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28 [2023-02-16 01:03:34,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:34,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:34,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 80 [2023-02-16 01:03:34,378 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-02-16 01:03:34,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-02-16 01:03:34,400 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2023-02-16 01:03:34,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 96 [2023-02-16 01:03:34,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:03:34,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 99 [2023-02-16 01:03:34,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-02-16 01:03:34,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:34,435 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-02-16 01:03:34,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 37 [2023-02-16 01:03:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-16 01:03:35,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:03:37,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184418981] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:37,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:03:37,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 59 [2023-02-16 01:03:37,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327486904] [2023-02-16 01:03:37,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:03:37,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-02-16 01:03:37,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:37,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-02-16 01:03:37,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=4036, Unknown=5, NotChecked=0, Total=4290 [2023-02-16 01:03:37,397 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 59 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 41 states have internal predecessors, (83), 16 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2023-02-16 01:03:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:45,074 INFO L93 Difference]: Finished difference Result 307 states and 378 transitions. [2023-02-16 01:03:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-02-16 01:03:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 41 states have internal predecessors, (83), 16 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) Word has length 63 [2023-02-16 01:03:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:45,078 INFO L225 Difference]: With dead ends: 307 [2023-02-16 01:03:45,078 INFO L226 Difference]: Without dead ends: 235 [2023-02-16 01:03:45,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2932 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1055, Invalid=11150, Unknown=5, NotChecked=0, Total=12210 [2023-02-16 01:03:45,084 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 828 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 4633 mSolverCounterSat, 262 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 4901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 4633 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:45,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1370 Invalid, 4901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 4633 Invalid, 6 Unknown, 0 Unchecked, 3.9s Time] [2023-02-16 01:03:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-02-16 01:03:45,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 157. [2023-02-16 01:03:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 120 states have internal predecessors, (136), 22 states have call successors, (22), 11 states have call predecessors, (22), 18 states have return successors, (37), 25 states have call predecessors, (37), 22 states have call successors, (37) [2023-02-16 01:03:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 195 transitions. [2023-02-16 01:03:45,122 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 195 transitions. Word has length 63 [2023-02-16 01:03:45,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:45,123 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 195 transitions. [2023-02-16 01:03:45,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 41 states have internal predecessors, (83), 16 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2023-02-16 01:03:45,123 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 195 transitions. [2023-02-16 01:03:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-16 01:03:45,126 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:45,126 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:45,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 01:03:45,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:45,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:45,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:45,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2102607608, now seen corresponding path program 1 times [2023-02-16 01:03:45,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:45,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423216016] [2023-02-16 01:03:45,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:45,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-16 01:03:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-16 01:03:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-16 01:03:45,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:45,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423216016] [2023-02-16 01:03:45,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423216016] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:45,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743150694] [2023-02-16 01:03:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:45,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:45,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:45,691 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) [2023-02-16 01:03:45,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:03:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-16 01:03:45,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:45,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:45,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:46,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:46,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-16 01:03:46,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:03:46,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743150694] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:46,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:03:46,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-02-16 01:03:46,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869412905] [2023-02-16 01:03:46,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:46,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 01:03:46,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:46,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 01:03:46,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-16 01:03:46,343 INFO L87 Difference]: Start difference. First operand 157 states and 195 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 01:03:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:46,869 INFO L93 Difference]: Finished difference Result 325 states and 395 transitions. [2023-02-16 01:03:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 01:03:46,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 72 [2023-02-16 01:03:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:46,871 INFO L225 Difference]: With dead ends: 325 [2023-02-16 01:03:46,871 INFO L226 Difference]: Without dead ends: 162 [2023-02-16 01:03:46,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-02-16 01:03:46,872 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 174 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:46,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 252 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 01:03:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-16 01:03:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 141. [2023-02-16 01:03:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 109 states have internal predecessors, (121), 18 states have call successors, (18), 11 states have call predecessors, (18), 16 states have return successors, (27), 20 states have call predecessors, (27), 18 states have call successors, (27) [2023-02-16 01:03:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2023-02-16 01:03:46,887 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 72 [2023-02-16 01:03:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:46,887 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2023-02-16 01:03:46,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 01:03:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2023-02-16 01:03:46,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-16 01:03:46,890 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:46,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:46,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-16 01:03:47,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:47,092 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:47,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1485354123, now seen corresponding path program 1 times [2023-02-16 01:03:47,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:47,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938605514] [2023-02-16 01:03:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:47,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:50,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 01:03:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:03:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-16 01:03:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-16 01:03:51,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:51,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938605514] [2023-02-16 01:03:51,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938605514] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:51,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554989949] [2023-02-16 01:03:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:51,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:51,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:51,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:03:51,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:03:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 199 conjunts are in the unsatisfiable core [2023-02-16 01:03:51,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:51,578 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:03:51,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:03:51,822 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:03:51,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:03:51,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:51,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:53,203 INFO L321 Elim1Store]: treesize reduction 191, result has 14.0 percent of original size [2023-02-16 01:03:53,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 217 treesize of output 167 [2023-02-16 01:03:53,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:53,232 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:03:53,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:53,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 46 [2023-02-16 01:03:55,028 INFO L321 Elim1Store]: treesize reduction 2912, result has 1.4 percent of original size [2023-02-16 01:03:55,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 15 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 26 new quantified variables, introduced 111 case distinctions, treesize of input 302251 treesize of output 164109 [2023-02-16 01:03:55,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169219 treesize of output 155857 [2023-02-16 01:03:55,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:55,697 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:03:55,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 340 treesize of output 238 [2023-02-16 01:03:56,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2023-02-16 01:03:56,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2023-02-16 01:03:56,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 345 [2023-02-16 01:03:57,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 268