./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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.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 cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:42:20,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:42:20,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:42:20,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:42:20,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:42:20,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:42:20,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:42:20,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:42:20,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:42:20,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:42:20,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:42:20,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:42:20,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:42:20,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:42:20,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:42:20,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:42:20,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:42:20,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:42:20,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:42:20,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:42:20,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:42:20,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:42:20,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:42:20,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:42:20,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:42:20,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:42:20,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:42:20,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:42:20,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:42:20,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:42:20,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:42:20,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:42:20,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:42:20,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:42:20,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:42:20,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:42:20,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:42:20,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:42:20,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:42:20,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:42:20,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:42:20,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:42:20,588 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:42:20,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:42:20,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:42:20,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:42:20,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:42:20,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:42:20,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:42:20,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:42:20,590 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:42:20,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:42:20,591 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:42:20,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:42:20,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:42:20,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:42:20,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:42:20,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:42:20,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:42:20,592 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:42:20,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:42:20,592 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:42:20,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:42:20,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:42:20,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:42:20,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:42:20,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:42:20,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:42:20,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:42:20,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:42:20,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:42:20,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:42:20,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:42:20,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:42:20,594 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:42:20,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:42:20,594 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:42:20,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 [2023-02-15 10:42:20,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:42:20,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:42:20,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:42:20,784 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:42:20,784 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:42:20,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-15 10:42:21,757 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:42:21,927 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:42:21,928 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-15 10:42:21,938 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/502ed368a/486274a8310847589ccd9728bbdba259/FLAG44e5e9aee [2023-02-15 10:42:22,332 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/502ed368a/486274a8310847589ccd9728bbdba259 [2023-02-15 10:42:22,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:42:22,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:42:22,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:42:22,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:42:22,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:42:22,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2279f761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22, skipping insertion in model container [2023-02-15 10:42:22,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:42:22,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:42:22,668 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.i[25842,25855] [2023-02-15 10:42:22,673 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.i[25967,25980] [2023-02-15 10:42:22,675 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.i[26082,26095] [2023-02-15 10:42:22,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:42:22,685 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:42:22,723 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.i[25842,25855] [2023-02-15 10:42:22,727 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.i[25967,25980] [2023-02-15 10:42:22,728 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.i[26082,26095] [2023-02-15 10:42:22,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:42:22,755 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:42:22,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22 WrapperNode [2023-02-15 10:42:22,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:42:22,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:42:22,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:42:22,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:42:22,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,809 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 129 [2023-02-15 10:42:22,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:42:22,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:42:22,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:42:22,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:42:22,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,847 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:42:22,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:42:22,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:42:22,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:42:22,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (1/1) ... [2023-02-15 10:42:22,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:42:22,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:42:22,887 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) [2023-02-15 10:42:22,914 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 [2023-02-15 10:42:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-15 10:42:22,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-15 10:42:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-02-15 10:42:22,927 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-02-15 10:42:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:42:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-15 10:42:22,928 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-15 10:42:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:42:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 10:42:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-15 10:42:22,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-15 10:42:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 10:42:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:42:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-15 10:42:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:42:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-15 10:42:22,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-15 10:42:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:42:22,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:42:23,072 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:42:23,074 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:42:23,272 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:42:23,277 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:42:23,277 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 10:42:23,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:42:23 BoogieIcfgContainer [2023-02-15 10:42:23,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:42:23,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:42:23,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:42:23,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:42:23,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:42:22" (1/3) ... [2023-02-15 10:42:23,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbc6a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:42:23, skipping insertion in model container [2023-02-15 10:42:23,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:22" (2/3) ... [2023-02-15 10:42:23,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbc6a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:42:23, skipping insertion in model container [2023-02-15 10:42:23,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:42:23" (3/3) ... [2023-02-15 10:42:23,291 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2023-02-15 10:42:23,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:42:23,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-15 10:42:23,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:42:23,366 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;@49bf875a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:42:23,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-15 10:42:23,369 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) [2023-02-15 10:42:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 10:42:23,374 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:23,374 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] [2023-02-15 10:42:23,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:23,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2023-02-15 10:42:23,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:42:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430648318] [2023-02-15 10:42:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:42:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 10:42:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-15 10:42:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 10:42:23,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:42:23,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430648318] [2023-02-15 10:42:23,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430648318] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:23,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:42:23,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:42:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98041186] [2023-02-15 10:42:23,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:23,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:42:23,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:42:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:42:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:42:23,647 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) [2023-02-15 10:42:23,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:23,765 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2023-02-15 10:42:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:42:23,767 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 [2023-02-15 10:42:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:23,778 INFO L225 Difference]: With dead ends: 147 [2023-02-15 10:42:23,778 INFO L226 Difference]: Without dead ends: 76 [2023-02-15 10:42:23,780 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 [2023-02-15 10:42:23,783 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 [2023-02-15 10:42:23,783 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] [2023-02-15 10:42:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-15 10:42:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2023-02-15 10:42:23,807 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) [2023-02-15 10:42:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-02-15 10:42:23,809 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2023-02-15 10:42:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:23,810 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-02-15 10:42:23,810 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) [2023-02-15 10:42:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-02-15 10:42:23,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 10:42:23,811 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:23,811 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] [2023-02-15 10:42:23,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 10:42:23,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2023-02-15 10:42:23,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:42:23,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193495782] [2023-02-15 10:42:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:23,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:42:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 10:42:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-15 10:42:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 10:42:24,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:42:24,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193495782] [2023-02-15 10:42:24,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193495782] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:24,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:42:24,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:42:24,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330610200] [2023-02-15 10:42:24,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:24,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:42:24,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:42:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:42:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:42:24,016 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) [2023-02-15 10:42:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:24,184 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2023-02-15 10:42:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 10:42:24,184 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 [2023-02-15 10:42:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:24,186 INFO L225 Difference]: With dead ends: 82 [2023-02-15 10:42:24,186 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 10:42:24,187 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 [2023-02-15 10:42:24,188 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 [2023-02-15 10:42:24,188 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] [2023-02-15 10:42:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 10:42:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2023-02-15 10:42:24,200 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) [2023-02-15 10:42:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2023-02-15 10:42:24,201 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2023-02-15 10:42:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:24,202 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2023-02-15 10:42:24,202 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) [2023-02-15 10:42:24,202 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2023-02-15 10:42:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 10:42:24,203 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:24,203 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] [2023-02-15 10:42:24,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 10:42:24,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:24,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:24,204 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2023-02-15 10:42:24,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:42:24,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902229567] [2023-02-15 10:42:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:42:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 10:42:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-15 10:42:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 10:42:24,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:42:24,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902229567] [2023-02-15 10:42:24,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902229567] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:24,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:42:24,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:42:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289007679] [2023-02-15 10:42:24,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:24,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:42:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:42:24,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:42:24,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:42:24,403 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) [2023-02-15 10:42:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:24,748 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2023-02-15 10:42:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 10:42:24,749 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 [2023-02-15 10:42:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:24,750 INFO L225 Difference]: With dead ends: 206 [2023-02-15 10:42:24,750 INFO L226 Difference]: Without dead ends: 145 [2023-02-15 10:42:24,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-15 10:42:24,752 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 142 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:42:24,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 168 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:42:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-15 10:42:24,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2023-02-15 10:42:24,762 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) [2023-02-15 10:42:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-15 10:42:24,763 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 28 [2023-02-15 10:42:24,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:24,764 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-15 10:42:24,764 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) [2023-02-15 10:42:24,764 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-15 10:42:24,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-15 10:42:24,765 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:24,766 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] [2023-02-15 10:42:24,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 10:42:24,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:24,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:24,766 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2023-02-15 10:42:24,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:42:24,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772403647] [2023-02-15 10:42:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:24,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:42:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 10:42:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 10:42:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:42:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 10:42:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:42:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-15 10:42:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-15 10:42:24,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:42:24,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772403647] [2023-02-15 10:42:24,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772403647] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:42:24,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116682703] [2023-02-15 10:42:24,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:24,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:42:24,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:42:24,891 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) [2023-02-15 10:42:24,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:42:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:25,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 10:42:25,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-15 10:42:25,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:42:25,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116682703] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:25,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 10:42:25,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-02-15 10:42:25,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049148087] [2023-02-15 10:42:25,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:25,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:42:25,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:42:25,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:42:25,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:42:25,087 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) [2023-02-15 10:42:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:25,103 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2023-02-15 10:42:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:42:25,105 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 [2023-02-15 10:42:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:25,107 INFO L225 Difference]: With dead ends: 219 [2023-02-15 10:42:25,107 INFO L226 Difference]: Without dead ends: 126 [2023-02-15 10:42:25,108 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 [2023-02-15 10:42:25,108 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 [2023-02-15 10:42:25,109 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] [2023-02-15 10:42:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-15 10:42:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-02-15 10:42:25,117 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) [2023-02-15 10:42:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2023-02-15 10:42:25,118 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 72 [2023-02-15 10:42:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:25,118 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2023-02-15 10:42:25,118 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) [2023-02-15 10:42:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2023-02-15 10:42:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-15 10:42:25,120 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:25,120 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] [2023-02-15 10:42:25,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:42:25,325 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 [2023-02-15 10:42:25,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:25,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2023-02-15 10:42:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:42:25,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084751917] [2023-02-15 10:42:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:25,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:42:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 10:42:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 10:42:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:42:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:27,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 10:42:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-15 10:42:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-15 10:42:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 10:42:28,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:42:28,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084751917] [2023-02-15 10:42:28,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084751917] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:42:28,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061270949] [2023-02-15 10:42:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:28,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:42:28,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:42:28,414 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) [2023-02-15 10:42:28,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:42:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:28,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 198 conjunts are in the unsatisfiable core [2023-02-15 10:42:28,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:28,795 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 10:42:28,795 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 [2023-02-15 10:42:28,975 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-15 10:42:28,975 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 [2023-02-15 10:42:29,110 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 [2023-02-15 10:42:29,121 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 [2023-02-15 10:42:30,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:30,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:30,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:30,299 INFO L321 Elim1Store]: treesize reduction 158, result has 24.0 percent of original size [2023-02-15 10:42:30,299 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 190 treesize of output 155 [2023-02-15 10:42:30,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:30,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:30,321 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 41 treesize of output 28 [2023-02-15 10:42:30,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:30,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:30,329 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 94 treesize of output 80 [2023-02-15 10:42:30,343 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-02-15 10:42:30,343 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 [2023-02-15 10:42:30,360 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2023-02-15 10:42:30,360 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 79 treesize of output 71 [2023-02-15 10:42:30,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:42:30,370 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 94 treesize of output 74 [2023-02-15 10:42:30,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:30,385 INFO L321 Elim1Store]: treesize reduction 8, result has 74.2 percent of original size [2023-02-15 10:42:30,386 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 29 treesize of output 35 [2023-02-15 10:42:30,390 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 40 treesize of output 32 [2023-02-15 10:42:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:42:31,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:42:32,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061270949] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:42:32,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:42:32,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29] total 62 [2023-02-15 10:42:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358576459] [2023-02-15 10:42:32,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:42:32,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-02-15 10:42:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:42:32,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-02-15 10:42:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4437, Unknown=7, NotChecked=0, Total=4692 [2023-02-15 10:42:32,625 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 62 states, 50 states have (on average 1.66) internal successors, (83), 43 states have internal predecessors, (83), 17 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-02-15 10:42:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:38,075 INFO L93 Difference]: Finished difference Result 266 states and 330 transitions. [2023-02-15 10:42:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-15 10:42:38,077 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 50 states have (on average 1.66) internal successors, (83), 43 states have internal predecessors, (83), 17 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 63 [2023-02-15 10:42:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:38,078 INFO L225 Difference]: With dead ends: 266 [2023-02-15 10:42:38,078 INFO L226 Difference]: Without dead ends: 194 [2023-02-15 10:42:38,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=844, Invalid=10069, Unknown=7, NotChecked=0, Total=10920 [2023-02-15 10:42:38,082 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 987 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 4668 mSolverCounterSat, 343 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 5023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 4668 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:42:38,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1619 Invalid, 5023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 4668 Invalid, 12 Unknown, 0 Unchecked, 3.0s Time] [2023-02-15 10:42:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-02-15 10:42:38,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 150. [2023-02-15 10:42:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 1.201834862385321) internal successors, (131), 115 states have internal predecessors, (131), 21 states have call successors, (21), 11 states have call predecessors, (21), 17 states have return successors, (36), 23 states have call predecessors, (36), 21 states have call successors, (36) [2023-02-15 10:42:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 188 transitions. [2023-02-15 10:42:38,102 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 188 transitions. Word has length 63 [2023-02-15 10:42:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:38,102 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 188 transitions. [2023-02-15 10:42:38,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 50 states have (on average 1.66) internal successors, (83), 43 states have internal predecessors, (83), 17 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-02-15 10:42:38,103 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 188 transitions. [2023-02-15 10:42:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-15 10:42:38,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:38,112 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] [2023-02-15 10:42:38,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 10:42:38,319 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 [2023-02-15 10:42:38,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:38,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2102607608, now seen corresponding path program 1 times [2023-02-15 10:42:38,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:42:38,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934562925] [2023-02-15 10:42:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:38,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:42:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 10:42:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 10:42:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:42:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 10:42:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:42:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-15 10:42:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-15 10:42:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:42:38,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934562925] [2023-02-15 10:42:38,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934562925] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:42:38,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499078584] [2023-02-15 10:42:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:38,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:42:38,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:42:38,580 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) [2023-02-15 10:42:38,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:42:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:38,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-15 10:42:38,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:38,797 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 [2023-02-15 10:42:38,800 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 [2023-02-15 10:42:38,904 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 [2023-02-15 10:42:38,906 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 [2023-02-15 10:42:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-15 10:42:39,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:42:39,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499078584] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:39,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 10:42:39,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-02-15 10:42:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438877791] [2023-02-15 10:42:39,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:39,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:42:39,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:42:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:42:39,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-15 10:42:39,067 INFO L87 Difference]: Start difference. First operand 150 states and 188 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) [2023-02-15 10:42:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:39,499 INFO L93 Difference]: Finished difference Result 312 states and 382 transitions. [2023-02-15 10:42:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 10:42:39,501 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 [2023-02-15 10:42:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:39,502 INFO L225 Difference]: With dead ends: 312 [2023-02-15 10:42:39,502 INFO L226 Difference]: Without dead ends: 156 [2023-02-15 10:42:39,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-02-15 10:42:39,503 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 204 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:42:39,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 231 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:42:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-15 10:42:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 134. [2023-02-15 10:42:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 104 states have internal predecessors, (116), 17 states have call successors, (17), 11 states have call predecessors, (17), 15 states have return successors, (26), 18 states have call predecessors, (26), 17 states have call successors, (26) [2023-02-15 10:42:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2023-02-15 10:42:39,526 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 72 [2023-02-15 10:42:39,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:39,527 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2023-02-15 10:42:39,527 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) [2023-02-15 10:42:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2023-02-15 10:42:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-15 10:42:39,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:39,528 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] [2023-02-15 10:42:39,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 10:42:39,733 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 [2023-02-15 10:42:39,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:39,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:39,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1485354123, now seen corresponding path program 1 times [2023-02-15 10:42:39,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:42:39,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912394060] [2023-02-15 10:42:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:39,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:42:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 10:42:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 10:42:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:42:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:41,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:42:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 10:42:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-15 10:42:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-15 10:42:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 10:42:42,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:42:42,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912394060] [2023-02-15 10:42:42,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912394060] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:42:42,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941386113] [2023-02-15 10:42:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:42,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:42:42,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:42:42,449 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) [2023-02-15 10:42:42,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 10:42:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:42,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 177 conjunts are in the unsatisfiable core [2023-02-15 10:42:42,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:42,768 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 10:42:42,768 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 [2023-02-15 10:42:42,873 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 10:42:42,873 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 [2023-02-15 10:42:42,894 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 [2023-02-15 10:42:42,898 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 [2023-02-15 10:42:43,321 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2023-02-15 10:42:43,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 410 treesize of output 274 [2023-02-15 10:42:43,361 INFO L321 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2023-02-15 10:42:43,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 266 treesize of output 205 [2023-02-15 10:42:43,409 INFO L321 Elim1Store]: treesize reduction 122, result has 22.3 percent of original size [2023-02-15 10:42:43,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 179 treesize of output 207 [2023-02-15 10:42:43,426 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:42:43,444 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:42:43,571 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:43,596 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:42:43,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 24 treesize of output 14 [2023-02-15 10:42:43,637 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 5 treesize of output 3 [2023-02-15 10:42:43,652 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:43,693 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:43,717 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 5 treesize of output 3 [2023-02-15 10:42:43,745 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:43,765 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 102 [2023-02-15 10:42:43,846 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-15 10:42:43,846 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 2 case distinctions, treesize of input 31 treesize of output 3 [2023-02-15 10:42:43,857 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:43,887 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:43,898 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 24 treesize of output 20 [2023-02-15 10:42:43,903 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2023-02-15 10:42:43,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 10:42:44,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:42:44,109 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-02-15 10:42:44,112 INFO L158 Benchmark]: Toolchain (without parser) took 21776.57ms. Allocated memory was 104.9MB in the beginning and 436.2MB in the end (delta: 331.4MB). Free memory was 40.4MB in the beginning and 228.5MB in the end (delta: -188.1MB). Peak memory consumption was 146.6MB. Max. memory is 16.1GB. [2023-02-15 10:42:44,113 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 10:42:44,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.21ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 40.3MB in the beginning and 79.9MB in the end (delta: -39.6MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2023-02-15 10:42:44,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.60ms. Allocated memory is still 125.8MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:42:44,113 INFO L158 Benchmark]: Boogie Preprocessor took 51.26ms. Allocated memory is still 125.8MB. Free memory was 77.8MB in the beginning and 75.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 10:42:44,113 INFO L158 Benchmark]: RCFGBuilder took 416.43ms. Allocated memory is still 125.8MB. Free memory was 75.2MB in the beginning and 55.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-15 10:42:44,114 INFO L158 Benchmark]: TraceAbstraction took 20832.19ms. Allocated memory was 125.8MB in the beginning and 436.2MB in the end (delta: 310.4MB). Free memory was 55.3MB in the beginning and 228.5MB in the end (delta: -173.2MB). Peak memory consumption was 138.7MB. Max. memory is 16.1GB. [2023-02-15 10:42:44,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.21ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 40.3MB in the beginning and 79.9MB in the end (delta: -39.6MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.60ms. Allocated memory is still 125.8MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.26ms. Allocated memory is still 125.8MB. Free memory was 77.8MB in the beginning and 75.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 416.43ms. Allocated memory is still 125.8MB. Free memory was 75.2MB in the beginning and 55.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20832.19ms. Allocated memory was 125.8MB in the beginning and 436.2MB in the end (delta: 310.4MB). Free memory was 55.3MB in the beginning and 228.5MB in the end (delta: -173.2MB). Peak memory consumption was 138.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-02-15 10:42:44,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:42:46,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:42:46,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:42:46,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:42:46,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:42:46,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:42:46,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:42:46,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:42:46,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:42:46,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:42:46,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:42:46,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:42:46,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:42:46,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:42:46,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:42:46,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:42:46,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:42:46,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:42:46,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:42:46,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:42:46,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:42:46,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:42:46,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:42:46,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:42:46,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:42:46,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:42:46,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:42:46,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:42:46,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:42:46,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:42:46,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:42:46,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:42:46,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:42:46,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:42:46,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:42:46,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:42:46,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:42:46,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:42:46,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:42:46,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:42:46,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:42:46,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-15 10:42:46,109 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:42:46,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:42:46,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:42:46,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:42:46,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:42:46,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:42:46,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:42:46,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:42:46,113 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:42:46,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:42:46,114 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:42:46,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:42:46,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:42:46,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:42:46,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:42:46,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:42:46,114 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 10:42:46,115 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 10:42:46,115 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 10:42:46,115 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:42:46,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:42:46,115 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:42:46,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:42:46,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:42:46,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:42:46,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:42:46,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:42:46,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:42:46,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:42:46,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:42:46,116 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 10:42:46,117 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 10:42:46,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:42:46,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:42:46,117 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:42:46,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:42:46,117 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 10:42:46,117 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:42:46,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 [2023-02-15 10:42:46,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:42:46,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:42:46,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:42:46,382 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:42:46,384 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:42:46,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-15 10:42:47,370 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:42:47,574 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:42:47,575 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-15 10:42:47,582 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b989d91b/1a898d83e12a4072a0ac0daab06c7402/FLAGa4a071654 [2023-02-15 10:42:47,592 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b989d91b/1a898d83e12a4072a0ac0daab06c7402 [2023-02-15 10:42:47,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:42:47,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:42:47,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:42:47,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:42:47,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:42:47,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:42:47" (1/1) ... [2023-02-15 10:42:47,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59037e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:47, skipping insertion in model container [2023-02-15 10:42:47,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:42:47" (1/1) ... [2023-02-15 10:42:47,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:42:47,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:42:47,873 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.i[25842,25855] [2023-02-15 10:42:47,876 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.i[25967,25980] [2023-02-15 10:42:47,876 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.i[26082,26095] [2023-02-15 10:42:47,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:42:47,887 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 10:42:47,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:42:47,934 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.i[25842,25855] [2023-02-15 10:42:47,935 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.i[25967,25980] [2023-02-15 10:42:47,937 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.i[26082,26095] [2023-02-15 10:42:47,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:42:47,944 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:42:47,985 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.i[25842,25855] [2023-02-15 10:42:47,988 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.i[25967,25980] [2023-02-15 10:42:47,988 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.i[26082,26095] [2023-02-15 10:42:47,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:42:48,010 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:42:48,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48 WrapperNode [2023-02-15 10:42:48,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:42:48,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:42:48,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:42:48,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:42:48,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,068 INFO L138 Inliner]: procedures = 140, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 125 [2023-02-15 10:42:48,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:42:48,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:42:48,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:42:48,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:42:48,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,118 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:42:48,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:42:48,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:42:48,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:42:48,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (1/1) ... [2023-02-15 10:42:48,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:42:48,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:42:48,182 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) [2023-02-15 10:42:48,212 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 [2023-02-15 10:42:48,237 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-15 10:42:48,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-15 10:42:48,238 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-02-15 10:42:48,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-02-15 10:42:48,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:42:48,238 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-15 10:42:48,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-15 10:42:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:42:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 10:42:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-15 10:42:48,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-15 10:42:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 10:42:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:42:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-15 10:42:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-15 10:42:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-15 10:42:48,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-15 10:42:48,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:42:48,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:42:48,416 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:42:48,417 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:42:48,741 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:42:48,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:42:48,746 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 10:42:48,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:42:48 BoogieIcfgContainer [2023-02-15 10:42:48,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:42:48,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:42:48,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:42:48,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:42:48,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:42:47" (1/3) ... [2023-02-15 10:42:48,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a79df6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:42:48, skipping insertion in model container [2023-02-15 10:42:48,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:42:48" (2/3) ... [2023-02-15 10:42:48,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a79df6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:42:48, skipping insertion in model container [2023-02-15 10:42:48,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:42:48" (3/3) ... [2023-02-15 10:42:48,754 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2023-02-15 10:42:48,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:42:48,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-15 10:42:48,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:42:48,808 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;@71e57523, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:42:48,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-15 10:42:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 47 states have (on average 1.297872340425532) internal successors, (61), 50 states have internal predecessors, (61), 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) [2023-02-15 10:42:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 10:42:48,818 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:48,818 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] [2023-02-15 10:42:48,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:48,823 INFO L85 PathProgramCache]: Analyzing trace with hash 673246785, now seen corresponding path program 1 times [2023-02-15 10:42:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:42:48,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448932340] [2023-02-15 10:42:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:48,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:48,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:42:48,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:42:48,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 10:42:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:48,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 10:42:48,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:42:48,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:42:48,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:42:48,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448932340] [2023-02-15 10:42:48,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448932340] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:48,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:42:48,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:42:48,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345812909] [2023-02-15 10:42:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:48,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:42:48,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:42:49,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:42:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:42:49,022 INFO L87 Difference]: Start difference. First operand has 67 states, 47 states have (on average 1.297872340425532) internal successors, (61), 50 states have internal predecessors, (61), 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 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 10:42:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:49,058 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2023-02-15 10:42:49,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:42:49,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-02-15 10:42:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:49,065 INFO L225 Difference]: With dead ends: 130 [2023-02-15 10:42:49,065 INFO L226 Difference]: Without dead ends: 62 [2023-02-15 10:42:49,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:42:49,073 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:42:49,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:42:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-15 10:42:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-02-15 10:42:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 45 states have internal predecessors, (50), 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) [2023-02-15 10:42:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2023-02-15 10:42:49,107 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 27 [2023-02-15 10:42:49,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:49,108 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2023-02-15 10:42:49,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 10:42:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2023-02-15 10:42:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 10:42:49,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:49,109 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] [2023-02-15 10:42:49,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-15 10:42:49,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:49,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:49,319 INFO L85 PathProgramCache]: Analyzing trace with hash -387762175, now seen corresponding path program 1 times [2023-02-15 10:42:49,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:42:49,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366097744] [2023-02-15 10:42:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:49,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:49,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:42:49,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:42:49,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 10:42:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:49,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 10:42:49,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 10:42:49,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:42:49,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:42:49,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366097744] [2023-02-15 10:42:49,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366097744] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:49,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:42:49,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:42:49,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502762758] [2023-02-15 10:42:49,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:49,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:42:49,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:42:49,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:42:49,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:42:49,659 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 10:42:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:49,936 INFO L93 Difference]: Finished difference Result 170 states and 208 transitions. [2023-02-15 10:42:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:42:49,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 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 27 [2023-02-15 10:42:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:49,939 INFO L225 Difference]: With dead ends: 170 [2023-02-15 10:42:49,939 INFO L226 Difference]: Without dead ends: 116 [2023-02-15 10:42:49,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:42:49,940 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 59 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:42:49,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 184 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:42:49,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-15 10:42:49,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2023-02-15 10:42:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 74 states have internal predecessors, (85), 18 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2023-02-15 10:42:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2023-02-15 10:42:49,951 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 27 [2023-02-15 10:42:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:49,951 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2023-02-15 10:42:49,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 10:42:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2023-02-15 10:42:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 10:42:49,952 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:49,952 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] [2023-02-15 10:42:49,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:42:50,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:50,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:50,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:50,161 INFO L85 PathProgramCache]: Analyzing trace with hash -438555830, now seen corresponding path program 1 times [2023-02-15 10:42:50,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:42:50,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527764651] [2023-02-15 10:42:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:50,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:50,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:42:50,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:42:50,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 10:42:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:50,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 10:42:50,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 10:42:50,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:42:50,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:42:50,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527764651] [2023-02-15 10:42:50,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527764651] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:50,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:42:50,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:42:50,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109286006] [2023-02-15 10:42:50,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:50,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:42:50,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:42:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:42:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:42:50,245 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 10:42:50,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:50,259 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2023-02-15 10:42:50,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:42:50,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 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 27 [2023-02-15 10:42:50,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:50,261 INFO L225 Difference]: With dead ends: 108 [2023-02-15 10:42:50,261 INFO L226 Difference]: Without dead ends: 106 [2023-02-15 10:42:50,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:42:50,262 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:42:50,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:42:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-15 10:42:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2023-02-15 10:42:50,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 76 states have internal predecessors, (86), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) [2023-02-15 10:42:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 130 transitions. [2023-02-15 10:42:50,271 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 130 transitions. Word has length 27 [2023-02-15 10:42:50,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:50,272 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 130 transitions. [2023-02-15 10:42:50,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 10:42:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 130 transitions. [2023-02-15 10:42:50,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-15 10:42:50,273 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:50,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:42:50,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-02-15 10:42:50,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:50,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:50,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash -811626959, now seen corresponding path program 1 times [2023-02-15 10:42:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:42:50,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029621348] [2023-02-15 10:42:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:50,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:50,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:42:50,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:42:50,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 10:42:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:50,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 10:42:50,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:50,694 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 [2023-02-15 10:42:50,701 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 [2023-02-15 10:42:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-15 10:42:50,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:42:50,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:42:50,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029621348] [2023-02-15 10:42:50,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029621348] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:50,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:42:50,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 10:42:50,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018417564] [2023-02-15 10:42:50,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:50,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 10:42:50,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:42:50,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 10:42:50,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-15 10:42:50,893 INFO L87 Difference]: Start difference. First operand 104 states and 130 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 10:42:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:52,198 INFO L93 Difference]: Finished difference Result 268 states and 338 transitions. [2023-02-15 10:42:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 10:42:52,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 67 [2023-02-15 10:42:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:52,200 INFO L225 Difference]: With dead ends: 268 [2023-02-15 10:42:52,200 INFO L226 Difference]: Without dead ends: 162 [2023-02-15 10:42:52,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-02-15 10:42:52,202 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 167 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:42:52,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 310 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 10:42:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-15 10:42:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 122. [2023-02-15 10:42:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 86 states have (on average 1.186046511627907) internal successors, (102), 92 states have internal predecessors, (102), 19 states have call successors, (19), 10 states have call predecessors, (19), 14 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2023-02-15 10:42:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2023-02-15 10:42:52,213 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 67 [2023-02-15 10:42:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:52,214 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2023-02-15 10:42:52,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 10:42:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2023-02-15 10:42:52,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-15 10:42:52,215 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:52,215 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2023-02-15 10:42:52,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-15 10:42:52,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:52,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1108503363, now seen corresponding path program 1 times [2023-02-15 10:42:52,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:42:52,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983831391] [2023-02-15 10:42:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:52,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:52,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:42:52,426 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:42:52,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 10:42:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:52,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 10:42:52,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-15 10:42:52,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:42:52,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 10:42:52,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983831391] [2023-02-15 10:42:52,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983831391] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:42:52,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:42:52,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:42:52,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590418593] [2023-02-15 10:42:52,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:42:52,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:42:52,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 10:42:52,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:42:52,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:42:52,541 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-02-15 10:42:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:42:52,557 INFO L93 Difference]: Finished difference Result 196 states and 237 transitions. [2023-02-15 10:42:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:42:52,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 67 [2023-02-15 10:42:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:42:52,558 INFO L225 Difference]: With dead ends: 196 [2023-02-15 10:42:52,558 INFO L226 Difference]: Without dead ends: 109 [2023-02-15 10:42:52,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:42:52,559 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:42:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:42:52,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-15 10:42:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-02-15 10:42:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 77 states have internal predecessors, (83), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-15 10:42:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-02-15 10:42:52,567 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 67 [2023-02-15 10:42:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:42:52,567 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-02-15 10:42:52,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-02-15 10:42:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2023-02-15 10:42:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 10:42:52,568 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:42:52,568 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-02-15 10:42:52,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 10:42:52,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:52,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:42:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:42:52,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1210243856, now seen corresponding path program 1 times [2023-02-15 10:42:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 10:42:52,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500562065] [2023-02-15 10:42:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:42:52,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 10:42:52,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 10:42:52,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 10:42:52,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 10:42:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:42:52,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 91 conjunts are in the unsatisfiable core [2023-02-15 10:42:52,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:42:53,095 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-15 10:42:53,095 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 14 treesize of output 20 [2023-02-15 10:42:53,290 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-02-15 10:42:53,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-02-15 10:42:53,410 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 [2023-02-15 10:42:54,020 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-15 10:42:54,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-02-15 10:42:54,039 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:42:54,052 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:42:54,066 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 10:42:54,394 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:54,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:54,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:42:54,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:42:54,968 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:42:54,969 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 54 treesize of output 17 [2023-02-15 10:42:54,973 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 5 treesize of output 3 [2023-02-15 10:42:54,994 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 5 treesize of output 3 [2023-02-15 10:42:55,045 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:55,051 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:42:55,057 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:42:55,075 INFO L321 Elim1Store]: treesize reduction 24, result has 25.0 percent of original size [2023-02-15 10:42:55,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 328 treesize of output 269 [2023-02-15 10:42:55,139 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:55,142 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:42:55,250 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 5 treesize of output 3 [2023-02-15 10:42:55,277 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 5 treesize of output 3 [2023-02-15 10:42:57,859 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 27 treesize of output 30 [2023-02-15 10:42:59,617 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 27 treesize of output 30 [2023-02-15 10:44:36,551 WARN L233 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 151 DAG size of output: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:44:47,540 INFO L173 IndexEqualityManager]: detected equality via solver