./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 574ddb4e 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-?-574ddb4 [2023-02-17 06:08:45,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 06:08:45,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 06:08:45,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 06:08:45,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 06:08:45,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 06:08:45,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 06:08:45,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 06:08:45,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 06:08:45,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 06:08:45,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 06:08:45,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 06:08:45,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 06:08:45,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 06:08:45,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 06:08:45,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 06:08:45,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 06:08:45,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 06:08:45,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 06:08:45,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 06:08:45,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 06:08:45,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 06:08:45,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 06:08:45,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 06:08:45,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 06:08:45,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 06:08:45,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 06:08:45,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 06:08:45,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 06:08:45,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 06:08:45,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 06:08:45,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 06:08:45,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 06:08:45,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 06:08:45,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 06:08:45,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 06:08:45,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 06:08:45,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 06:08:45,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 06:08:45,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 06:08:45,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 06:08:45,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 06:08:45,145 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 06:08:45,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 06:08:45,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 06:08:45,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 06:08:45,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 06:08:45,148 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 06:08:45,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 06:08:45,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 06:08:45,148 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 06:08:45,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 06:08:45,149 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 06:08:45,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 06:08:45,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 06:08:45,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 06:08:45,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 06:08:45,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 06:08:45,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 06:08:45,151 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 06:08:45,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 06:08:45,151 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 06:08:45,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 06:08:45,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 06:08:45,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 06:08:45,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 06:08:45,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:08:45,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 06:08:45,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 06:08:45,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 06:08:45,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 06:08:45,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 06:08:45,154 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 06:08:45,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 06:08:45,154 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 06:08:45,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 06:08:45,154 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 06:08:45,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 [2023-02-17 06:08:45,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 06:08:45,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 06:08:45,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 06:08:45,432 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 06:08:45,433 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 06:08:45,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-17 06:08:46,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 06:08:46,919 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 06:08:46,919 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-17 06:08:46,932 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348ab6ba8/4fda94fd70ad473e9e089ab386b3f2c2/FLAG53a3f51e6 [2023-02-17 06:08:46,946 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348ab6ba8/4fda94fd70ad473e9e089ab386b3f2c2 [2023-02-17 06:08:46,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 06:08:46,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 06:08:46,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 06:08:46,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 06:08:46,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 06:08:46,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:08:46" (1/1) ... [2023-02-17 06:08:46,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3257ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:46, skipping insertion in model container [2023-02-17 06:08:46,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:08:46" (1/1) ... [2023-02-17 06:08:46,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 06:08:47,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 06:08:47,255 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] [2023-02-17 06:08:47,263 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] [2023-02-17 06:08:47,265 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] [2023-02-17 06:08:47,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:08:47,276 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 06:08:47,314 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] [2023-02-17 06:08:47,315 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] [2023-02-17 06:08:47,316 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] [2023-02-17 06:08:47,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:08:47,341 INFO L208 MainTranslator]: Completed translation [2023-02-17 06:08:47,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47 WrapperNode [2023-02-17 06:08:47,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 06:08:47,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 06:08:47,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 06:08:47,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 06:08:47,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,415 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 129 [2023-02-17 06:08:47,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 06:08:47,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 06:08:47,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 06:08:47,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 06:08:47,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,458 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 06:08:47,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 06:08:47,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 06:08:47,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 06:08:47,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (1/1) ... [2023-02-17 06:08:47,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:08:47,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:08:47,542 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) [2023-02-17 06:08:47,560 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 [2023-02-17 06:08:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-17 06:08:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-17 06:08:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-02-17 06:08:47,588 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-02-17 06:08:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 06:08:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-17 06:08:47,588 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-17 06:08:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 06:08:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 06:08:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-17 06:08:47,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-17 06:08:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 06:08:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 06:08:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 06:08:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 06:08:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-17 06:08:47,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-17 06:08:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 06:08:47,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 06:08:47,718 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 06:08:47,720 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 06:08:48,001 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 06:08:48,009 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 06:08:48,012 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 06:08:48,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:08:48 BoogieIcfgContainer [2023-02-17 06:08:48,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 06:08:48,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 06:08:48,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 06:08:48,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 06:08:48,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 06:08:46" (1/3) ... [2023-02-17 06:08:48,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6310f333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:08:48, skipping insertion in model container [2023-02-17 06:08:48,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:08:47" (2/3) ... [2023-02-17 06:08:48,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6310f333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:08:48, skipping insertion in model container [2023-02-17 06:08:48,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:08:48" (3/3) ... [2023-02-17 06:08:48,029 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2023-02-17 06:08:48,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 06:08:48,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-17 06:08:48,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 06:08:48,138 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;@49ab3765, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 06:08:48,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-17 06:08:48,142 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) [2023-02-17 06:08:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 06:08:48,148 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:08:48,148 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] [2023-02-17 06:08:48,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:08:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:08:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2023-02-17 06:08:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:08:48,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861308312] [2023-02-17 06:08:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:08:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:08:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:48,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 06:08:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:48,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 06:08:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:48,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-17 06:08:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 06:08:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:08:48,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861308312] [2023-02-17 06:08:48,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861308312] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:08:48,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:08:48,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 06:08:48,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131875729] [2023-02-17 06:08:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:08:48,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 06:08:48,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:08:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 06:08:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 06:08:48,501 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) [2023-02-17 06:08:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:08:48,694 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2023-02-17 06:08:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 06:08:48,698 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 [2023-02-17 06:08:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:08:48,712 INFO L225 Difference]: With dead ends: 147 [2023-02-17 06:08:48,712 INFO L226 Difference]: Without dead ends: 76 [2023-02-17 06:08:48,720 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 [2023-02-17 06:08:48,726 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 [2023-02-17 06:08:48,728 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] [2023-02-17 06:08:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-17 06:08:48,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2023-02-17 06:08:48,775 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) [2023-02-17 06:08:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-02-17 06:08:48,778 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2023-02-17 06:08:48,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:08:48,778 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-02-17 06:08:48,779 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) [2023-02-17 06:08:48,779 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-02-17 06:08:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 06:08:48,780 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:08:48,780 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] [2023-02-17 06:08:48,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 06:08:48,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:08:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:08:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2023-02-17 06:08:48,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:08:48,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692423853] [2023-02-17 06:08:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:08:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:08:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 06:08:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 06:08:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-17 06:08:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 06:08:48,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:08:48,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692423853] [2023-02-17 06:08:48,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692423853] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:08:48,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:08:48,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 06:08:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146618635] [2023-02-17 06:08:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:08:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 06:08:48,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:08:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 06:08:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 06:08:48,957 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) [2023-02-17 06:08:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:08:49,150 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2023-02-17 06:08:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 06:08:49,151 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 [2023-02-17 06:08:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:08:49,155 INFO L225 Difference]: With dead ends: 82 [2023-02-17 06:08:49,155 INFO L226 Difference]: Without dead ends: 80 [2023-02-17 06:08:49,156 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 [2023-02-17 06:08:49,157 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 [2023-02-17 06:08:49,158 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] [2023-02-17 06:08:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-17 06:08:49,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2023-02-17 06:08:49,181 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) [2023-02-17 06:08:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2023-02-17 06:08:49,186 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2023-02-17 06:08:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:08:49,187 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2023-02-17 06:08:49,187 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) [2023-02-17 06:08:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2023-02-17 06:08:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 06:08:49,189 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:08:49,189 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] [2023-02-17 06:08:49,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 06:08:49,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:08:49,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:08:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2023-02-17 06:08:49,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:08:49,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351238086] [2023-02-17 06:08:49,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:08:49,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:08:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 06:08:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:49,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 06:08:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-17 06:08:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 06:08:49,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:08:49,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351238086] [2023-02-17 06:08:49,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351238086] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:08:49,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:08:49,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 06:08:49,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463965007] [2023-02-17 06:08:49,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:08:49,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 06:08:49,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:08:49,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 06:08:49,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 06:08:49,662 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) [2023-02-17 06:08:50,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:08:50,076 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2023-02-17 06:08:50,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 06:08:50,077 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 [2023-02-17 06:08:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:08:50,084 INFO L225 Difference]: With dead ends: 206 [2023-02-17 06:08:50,084 INFO L226 Difference]: Without dead ends: 145 [2023-02-17 06:08:50,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-17 06:08:50,089 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 [2023-02-17 06:08:50,090 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] [2023-02-17 06:08:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-17 06:08:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2023-02-17 06:08:50,109 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) [2023-02-17 06:08:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-17 06:08:50,111 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 28 [2023-02-17 06:08:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:08:50,111 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-17 06:08:50,111 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) [2023-02-17 06:08:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-17 06:08:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-17 06:08:50,116 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:08:50,117 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] [2023-02-17 06:08:50,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 06:08:50,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:08:50,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:08:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2023-02-17 06:08:50,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:08:50,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007746585] [2023-02-17 06:08:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:08:50,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:08:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 06:08:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 06:08:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-17 06:08:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 06:08:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 06:08:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-17 06:08:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 06:08:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 06:08:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-17 06:08:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-17 06:08:50,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:08:50,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007746585] [2023-02-17 06:08:50,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007746585] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:08:50,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684745767] [2023-02-17 06:08:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:08:50,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:08:50,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:08:50,308 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) [2023-02-17 06:08:50,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 06:08:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:50,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 06:08:50,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:08:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-17 06:08:50,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 06:08:50,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684745767] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:08:50,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 06:08:50,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-02-17 06:08:50,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281373428] [2023-02-17 06:08:50,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:08:50,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 06:08:50,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:08:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 06:08:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-17 06:08:50,535 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) [2023-02-17 06:08:50,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:08:50,563 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2023-02-17 06:08:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 06:08:50,569 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 [2023-02-17 06:08:50,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:08:50,571 INFO L225 Difference]: With dead ends: 219 [2023-02-17 06:08:50,572 INFO L226 Difference]: Without dead ends: 126 [2023-02-17 06:08:50,574 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 [2023-02-17 06:08:50,577 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 [2023-02-17 06:08:50,577 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] [2023-02-17 06:08:50,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-17 06:08:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-02-17 06:08:50,596 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) [2023-02-17 06:08:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2023-02-17 06:08:50,599 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 72 [2023-02-17 06:08:50,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:08:50,599 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2023-02-17 06:08:50,600 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) [2023-02-17 06:08:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2023-02-17 06:08:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-17 06:08:50,606 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:08:50,606 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] [2023-02-17 06:08:50,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 06:08:50,817 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 [2023-02-17 06:08:50,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:08:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:08:50,818 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2023-02-17 06:08:50,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:08:50,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398298270] [2023-02-17 06:08:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:08:50,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:08:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 06:08:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 06:08:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-17 06:08:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 06:08:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:53,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 06:08:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 06:08:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:53,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-17 06:08:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-17 06:08:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-17 06:08:53,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:08:53,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398298270] [2023-02-17 06:08:53,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398298270] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:08:53,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630397730] [2023-02-17 06:08:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:08:53,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:08:53,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:08:53,800 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) [2023-02-17 06:08:53,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 06:08:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:08:53,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 199 conjunts are in the unsatisfiable core [2023-02-17 06:08:53,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:08:54,173 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 06:08:54,174 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 39 [2023-02-17 06:08:54,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 06:08:54,292 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 36 treesize of output 81 [2023-02-17 06:08:54,417 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 [2023-02-17 06:08:54,420 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 [2023-02-17 06:08:55,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 06:08:55,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 06:08:55,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 06:08:55,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 06:08:55,352 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 352 [2023-02-17 06:08:55,379 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 06:08:55,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 545 treesize of output 445 [2023-02-17 06:08:55,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 06:08:55,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 06:08:55,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-02-17 06:08:55,411 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 44 treesize of output 47 [2023-02-17 06:08:55,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 06:08:55,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 271 [2023-02-17 06:08:55,438 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 06:08:55,439 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 42 [2023-02-17 06:08:55,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 06:08:55,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 88 [2023-02-17 06:08:55,482 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 06:08:55,493 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 52 treesize of output 44 [2023-02-17 06:08:55,551 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 06:08:55,551 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 129 treesize of output 123 [2023-02-17 06:09:17,903 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 06:09:18,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 3188539 treesize of output 2161867