./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 b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex.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-?-b5317da-m [2023-02-16 01:03:22,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:03:22,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:03:22,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:03:22,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:03:22,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:03:22,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:03:22,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:03:22,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:03:22,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:03:22,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:03:22,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:03:22,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:03:22,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:03:22,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:03:22,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:03:22,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:03:22,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:03:22,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:03:22,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:03:22,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:03:22,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:03:22,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:03:22,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:03:22,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:03:22,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:03:22,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:03:22,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:03:22,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:03:22,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:03:22,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:03:22,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:03:22,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:03:22,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:03:22,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:03:22,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:03:22,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:03:22,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:03:22,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:03:22,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:03:22,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:03:22,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:03:22,687 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:03:22,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:03:22,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:03:22,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:03:22,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:03:22,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:03:22,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:03:22,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:03:22,693 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:03:22,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:03:22,694 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:03:22,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:03:22,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:03:22,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:03:22,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:03:22,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:03:22,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:03:22,695 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:03:22,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:03:22,695 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:03:22,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:03:22,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:03:22,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:03:22,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:03:22,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:03:22,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:03:22,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:03:22,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:03:22,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:03:22,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:03:22,698 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:03:22,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:03:22,698 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:03:22,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:03:22,698 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:03:22,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 [2023-02-16 01:03:22,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:03:23,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:03:23,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:03:23,005 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:03:23,006 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:03:23,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-16 01:03:24,159 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:03:24,328 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:03:24,328 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-16 01:03:24,339 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97848ac8/6af91d2244e04e0ba2ed1a06de1a5160/FLAG079b42adc [2023-02-16 01:03:24,349 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97848ac8/6af91d2244e04e0ba2ed1a06de1a5160 [2023-02-16 01:03:24,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:03:24,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:03:24,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:03:24,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:03:24,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:03:24,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5309413c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24, skipping insertion in model container [2023-02-16 01:03:24,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:03:24,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:03:24,584 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] [2023-02-16 01:03:24,587 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] [2023-02-16 01:03:24,588 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] [2023-02-16 01:03:24,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:03:24,596 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:03:24,628 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] [2023-02-16 01:03:24,629 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] [2023-02-16 01:03:24,629 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] [2023-02-16 01:03:24,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:03:24,650 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:03:24,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24 WrapperNode [2023-02-16 01:03:24,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:03:24,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:03:24,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:03:24,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:03:24,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,690 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 129 [2023-02-16 01:03:24,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:03:24,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:03:24,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:03:24,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:03:24,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:03:24,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:03:24,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:03:24,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:03:24,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (1/1) ... [2023-02-16 01:03:24,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:03:24,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:24,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 01:03:24,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 01:03:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-16 01:03:24,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-16 01:03:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-02-16 01:03:24,824 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-02-16 01:03:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 01:03:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-16 01:03:24,825 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-16 01:03:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:03:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 01:03:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-16 01:03:24,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-16 01:03:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 01:03:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 01:03:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 01:03:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:03:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-16 01:03:24,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-16 01:03:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:03:24,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:03:24,913 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:03:24,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:03:25,110 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:03:25,115 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:03:25,115 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 01:03:25,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:03:25 BoogieIcfgContainer [2023-02-16 01:03:25,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:03:25,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:03:25,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:03:25,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:03:25,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:03:24" (1/3) ... [2023-02-16 01:03:25,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184edfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:03:25, skipping insertion in model container [2023-02-16 01:03:25,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:24" (2/3) ... [2023-02-16 01:03:25,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184edfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:03:25, skipping insertion in model container [2023-02-16 01:03:25,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:03:25" (3/3) ... [2023-02-16 01:03:25,122 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2023-02-16 01:03:25,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:03:25,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-16 01:03:25,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:03:25,185 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;@a32b21c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:03:25,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-16 01:03:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 01:03:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:03:25,219 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:25,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:25,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:25,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2023-02-16 01:03:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:25,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843579646] [2023-02-16 01:03:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:25,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 01:03:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:25,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:25,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843579646] [2023-02-16 01:03:25,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843579646] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:25,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:25,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:03:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641091972] [2023-02-16 01:03:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:25,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:03:25,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:25,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:03:25,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:03:25,641 INFO L87 Difference]: Start difference. First operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 01:03:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:25,800 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2023-02-16 01:03:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:03:25,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-02-16 01:03:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:25,810 INFO L225 Difference]: With dead ends: 147 [2023-02-16 01:03:25,810 INFO L226 Difference]: Without dead ends: 76 [2023-02-16 01:03:25,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:03:25,815 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:25,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 74 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:03:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-16 01:03:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2023-02-16 01:03:25,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 01:03:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-02-16 01:03:25,871 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2023-02-16 01:03:25,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:25,872 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-02-16 01:03:25,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 01:03:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-02-16 01:03:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:03:25,876 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:25,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:25,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:03:25,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:25,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:25,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2023-02-16 01:03:25,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:25,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659812543] [2023-02-16 01:03:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:25,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:25,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 01:03:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:26,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:26,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659812543] [2023-02-16 01:03:26,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659812543] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:26,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:26,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 01:03:26,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374426211] [2023-02-16 01:03:26,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:26,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:03:26,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:03:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:03:26,044 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:26,177 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2023-02-16 01:03:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 01:03:26,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-02-16 01:03:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:26,179 INFO L225 Difference]: With dead ends: 82 [2023-02-16 01:03:26,180 INFO L226 Difference]: Without dead ends: 80 [2023-02-16 01:03:26,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-16 01:03:26,181 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:26,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 141 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:03:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-16 01:03:26,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2023-02-16 01:03:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 51 states have internal predecessors, (56), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2023-02-16 01:03:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2023-02-16 01:03:26,190 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2023-02-16 01:03:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:26,190 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2023-02-16 01:03:26,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2023-02-16 01:03:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:03:26,191 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:26,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:26,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 01:03:26,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2023-02-16 01:03:26,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:26,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528076590] [2023-02-16 01:03:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 01:03:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:26,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:26,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528076590] [2023-02-16 01:03:26,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528076590] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:26,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:26,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 01:03:26,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756297010] [2023-02-16 01:03:26,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:26,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 01:03:26,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 01:03:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:03:26,551 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:27,096 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2023-02-16 01:03:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 01:03:27,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-02-16 01:03:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:27,101 INFO L225 Difference]: With dead ends: 206 [2023-02-16 01:03:27,101 INFO L226 Difference]: Without dead ends: 145 [2023-02-16 01:03:27,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-16 01:03:27,104 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 142 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:27,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 168 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 01:03:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-16 01:03:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2023-02-16 01:03:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 86 states have (on average 1.186046511627907) internal successors, (102), 92 states have internal predecessors, (102), 18 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (29), 18 states have call predecessors, (29), 18 states have call successors, (29) [2023-02-16 01:03:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-16 01:03:27,122 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 28 [2023-02-16 01:03:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:27,122 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-16 01:03:27,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-16 01:03:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-16 01:03:27,125 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:27,125 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:27,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 01:03:27,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:27,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2023-02-16 01:03:27,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:27,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511900438] [2023-02-16 01:03:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:27,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-16 01:03:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-16 01:03:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-16 01:03:27,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:27,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511900438] [2023-02-16 01:03:27,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511900438] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:27,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287972279] [2023-02-16 01:03:27,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:27,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:27,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:27,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:03:27,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:03:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:27,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:03:27,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-16 01:03:27,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:03:27,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287972279] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:27,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:03:27,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-02-16 01:03:27,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655855168] [2023-02-16 01:03:27,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:27,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:03:27,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:27,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:03:27,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:03:27,525 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 01:03:27,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:27,546 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2023-02-16 01:03:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:03:27,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2023-02-16 01:03:27,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:27,548 INFO L225 Difference]: With dead ends: 219 [2023-02-16 01:03:27,548 INFO L226 Difference]: Without dead ends: 126 [2023-02-16 01:03:27,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:03:27,550 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:27,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:03:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-16 01:03:27,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-02-16 01:03:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 96 states have internal predecessors, (107), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (30), 20 states have call predecessors, (30), 18 states have call successors, (30) [2023-02-16 01:03:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2023-02-16 01:03:27,568 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 72 [2023-02-16 01:03:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:27,568 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2023-02-16 01:03:27,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 01:03:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2023-02-16 01:03:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-16 01:03:27,571 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:27,571 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:27,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 01:03:27,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:27,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:27,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2023-02-16 01:03:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:27,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811714673] [2023-02-16 01:03:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 01:03:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:03:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-16 01:03:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 01:03:30,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:30,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811714673] [2023-02-16 01:03:30,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811714673] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:30,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230992061] [2023-02-16 01:03:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:30,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:30,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:30,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:03:30,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:03:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:30,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 202 conjunts are in the unsatisfiable core [2023-02-16 01:03:30,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:31,271 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:03:31,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:03:31,462 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-16 01:03:31,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-02-16 01:03:31,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:31,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:32,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:32,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:32,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:33,014 INFO L321 Elim1Store]: treesize reduction 158, result has 24.0 percent of original size [2023-02-16 01:03:33,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 204 treesize of output 165 [2023-02-16 01:03:33,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:33,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:33,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28 [2023-02-16 01:03:33,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:33,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:33,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 80 [2023-02-16 01:03:33,076 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-02-16 01:03:33,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-02-16 01:03:33,095 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2023-02-16 01:03:33,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 96 [2023-02-16 01:03:33,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:03:33,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 99 [2023-02-16 01:03:33,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-02-16 01:03:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:33,126 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-02-16 01:03:33,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 37 [2023-02-16 01:03:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-16 01:03:33,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:03:35,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230992061] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:35,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:03:35,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 59 [2023-02-16 01:03:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339777013] [2023-02-16 01:03:35,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:03:35,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-02-16 01:03:35,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-02-16 01:03:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=4036, Unknown=5, NotChecked=0, Total=4290 [2023-02-16 01:03:35,897 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 59 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 41 states have internal predecessors, (83), 16 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2023-02-16 01:03:44,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:44,253 INFO L93 Difference]: Finished difference Result 307 states and 378 transitions. [2023-02-16 01:03:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-02-16 01:03:44,254 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 41 states have internal predecessors, (83), 16 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) Word has length 63 [2023-02-16 01:03:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:44,257 INFO L225 Difference]: With dead ends: 307 [2023-02-16 01:03:44,257 INFO L226 Difference]: Without dead ends: 235 [2023-02-16 01:03:44,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2932 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1055, Invalid=11150, Unknown=5, NotChecked=0, Total=12210 [2023-02-16 01:03:44,271 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 828 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 4634 mSolverCounterSat, 262 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 4634 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:44,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1365 Invalid, 4908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 4634 Invalid, 12 Unknown, 0 Unchecked, 4.2s Time] [2023-02-16 01:03:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-02-16 01:03:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 157. [2023-02-16 01:03:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 120 states have internal predecessors, (136), 22 states have call successors, (22), 11 states have call predecessors, (22), 18 states have return successors, (37), 25 states have call predecessors, (37), 22 states have call successors, (37) [2023-02-16 01:03:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 195 transitions. [2023-02-16 01:03:44,343 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 195 transitions. Word has length 63 [2023-02-16 01:03:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:44,344 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 195 transitions. [2023-02-16 01:03:44,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 41 states have internal predecessors, (83), 16 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2023-02-16 01:03:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 195 transitions. [2023-02-16 01:03:44,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-16 01:03:44,352 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:44,356 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:44,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 01:03:44,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:44,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:44,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:44,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2102607608, now seen corresponding path program 1 times [2023-02-16 01:03:44,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:44,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527455330] [2023-02-16 01:03:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:44,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-16 01:03:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-16 01:03:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-16 01:03:44,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:44,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527455330] [2023-02-16 01:03:44,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527455330] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:44,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487273850] [2023-02-16 01:03:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:44,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:44,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:44,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:03:44,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:03:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:45,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-16 01:03:45,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:45,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:45,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:45,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:45,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-16 01:03:45,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:03:45,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487273850] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:45,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:03:45,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-02-16 01:03:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369853102] [2023-02-16 01:03:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:45,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 01:03:45,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 01:03:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-16 01:03:45,472 INFO L87 Difference]: Start difference. First operand 157 states and 195 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 01:03:45,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:45,914 INFO L93 Difference]: Finished difference Result 325 states and 395 transitions. [2023-02-16 01:03:45,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 01:03:45,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 72 [2023-02-16 01:03:45,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:45,916 INFO L225 Difference]: With dead ends: 325 [2023-02-16 01:03:45,916 INFO L226 Difference]: Without dead ends: 162 [2023-02-16 01:03:45,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-02-16 01:03:45,917 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 174 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:45,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 252 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 01:03:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-16 01:03:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 141. [2023-02-16 01:03:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 109 states have internal predecessors, (121), 18 states have call successors, (18), 11 states have call predecessors, (18), 16 states have return successors, (27), 20 states have call predecessors, (27), 18 states have call successors, (27) [2023-02-16 01:03:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2023-02-16 01:03:45,936 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 72 [2023-02-16 01:03:45,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:45,937 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2023-02-16 01:03:45,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 01:03:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2023-02-16 01:03:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-16 01:03:45,938 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:45,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:45,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:03:46,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:46,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1485354123, now seen corresponding path program 1 times [2023-02-16 01:03:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:46,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097173759] [2023-02-16 01:03:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:46,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:48,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 01:03:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:48,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:03:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-16 01:03:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-16 01:03:49,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:49,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097173759] [2023-02-16 01:03:49,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097173759] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:49,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859181302] [2023-02-16 01:03:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:49,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:49,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:49,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:03:49,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:03:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 199 conjunts are in the unsatisfiable core [2023-02-16 01:03:49,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:49,645 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:03:49,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:03:49,896 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:03:49,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:03:49,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:49,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:03:51,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:51,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:51,329 INFO L321 Elim1Store]: treesize reduction 191, result has 14.0 percent of original size [2023-02-16 01:03:51,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 217 treesize of output 167 [2023-02-16 01:03:51,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:51,338 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:03:51,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:51,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 46 [2023-02-16 01:03:53,041 INFO L321 Elim1Store]: treesize reduction 2912, result has 1.4 percent of original size [2023-02-16 01:03:53,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 15 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 26 new quantified variables, introduced 111 case distinctions, treesize of input 302251 treesize of output 164109 [2023-02-16 01:03:53,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169219 treesize of output 155857 [2023-02-16 01:03:53,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:53,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:03:53,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 340 treesize of output 238 [2023-02-16 01:03:54,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2023-02-16 01:03:54,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2023-02-16 01:03:54,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 345 [2023-02-16 01:03:55,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 268