./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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_unlock_at_exit.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 fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 19:42:47,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:42:47,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:42:47,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:42:47,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:42:47,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:42:47,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:42:47,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:42:47,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:42:47,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:42:47,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:42:47,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:42:47,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:42:47,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:42:47,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:42:47,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:42:47,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:42:47,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:42:47,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:42:47,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:42:48,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:42:48,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:42:48,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:42:48,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:42:48,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:42:48,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:42:48,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:42:48,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:42:48,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:42:48,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:42:48,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:42:48,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:42:48,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:42:48,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:42:48,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:42:48,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:42:48,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:42:48,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:42:48,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:42:48,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:42:48,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:42:48,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:42:48,042 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:42:48,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:42:48,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:42:48,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:42:48,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:42:48,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:42:48,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:42:48,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:42:48,044 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:42:48,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:42:48,045 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:42:48,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:42:48,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:42:48,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:42:48,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:42:48,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:42:48,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:42:48,046 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:42:48,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:42:48,047 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:42:48,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:42:48,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:42:48,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:42:48,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:42:48,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:42:48,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:42:48,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:42:48,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:42:48,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:42:48,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:42:48,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:42:48,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:42:48,049 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:42:48,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:42:48,049 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:42:48,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf [2023-02-15 19:42:48,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:42:48,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:42:48,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:42:48,260 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:42:48,260 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:42:48,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2023-02-15 19:42:49,406 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:42:49,639 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:42:49,640 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2023-02-15 19:42:49,652 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45f2ee85/69e332d35225441abb283e90b40d7f8e/FLAG04b19958e [2023-02-15 19:42:49,665 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45f2ee85/69e332d35225441abb283e90b40d7f8e [2023-02-15 19:42:49,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:42:49,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:42:49,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:42:49,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:42:49,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:42:49,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:42:49" (1/1) ... [2023-02-15 19:42:49,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4543ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:49, skipping insertion in model container [2023-02-15 19:42:49,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:42:49" (1/1) ... [2023-02-15 19:42:49,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:42:49,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:42:49,953 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_unlock_at_exit.i[25842,25855] [2023-02-15 19:42:49,957 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_unlock_at_exit.i[25967,25980] [2023-02-15 19:42:49,959 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_unlock_at_exit.i[26082,26095] [2023-02-15 19:42:49,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:42:49,967 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:42:49,991 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_unlock_at_exit.i[25842,25855] [2023-02-15 19:42:49,991 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_unlock_at_exit.i[25967,25980] [2023-02-15 19:42:49,992 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_unlock_at_exit.i[26082,26095] [2023-02-15 19:42:49,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:42:50,011 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:42:50,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50 WrapperNode [2023-02-15 19:42:50,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:42:50,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:42:50,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:42:50,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:42:50,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,043 INFO L138 Inliner]: procedures = 139, calls = 56, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 128 [2023-02-15 19:42:50,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:42:50,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:42:50,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:42:50,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:42:50,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,078 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:42:50,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:42:50,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:42:50,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:42:50,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (1/1) ... [2023-02-15 19:42:50,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:42:50,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:42:50,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 19:42:50,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 19:42:50,154 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-15 19:42:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-15 19:42:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 19:42:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-15 19:42:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-15 19:42:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:42:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 19:42:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-15 19:42:50,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-15 19:42:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 19:42:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 19:42:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-15 19:42:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:42:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-15 19:42:50,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-15 19:42:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:42:50,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:42:50,246 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:42:50,248 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:42:50,448 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:42:50,453 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:42:50,454 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 19:42:50,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:42:50 BoogieIcfgContainer [2023-02-15 19:42:50,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:42:50,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:42:50,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:42:50,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:42:50,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:42:49" (1/3) ... [2023-02-15 19:42:50,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300353b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:42:50, skipping insertion in model container [2023-02-15 19:42:50,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:42:50" (2/3) ... [2023-02-15 19:42:50,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300353b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:42:50, skipping insertion in model container [2023-02-15 19:42:50,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:42:50" (3/3) ... [2023-02-15 19:42:50,462 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2023-02-15 19:42:50,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:42:50,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-15 19:42:50,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:42:50,529 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;@af64bdb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:42:50,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-15 19:42:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 52 states have internal predecessors, (63), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 19:42:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:42:50,539 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:42:50,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:42:50,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:42:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:42:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1577806477, now seen corresponding path program 1 times [2023-02-15 19:42:50,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:42:50,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827901677] [2023-02-15 19:42:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:42:50,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:42:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 19:42:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:42:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-15 19:42:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 19:42:50,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:42:50,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827901677] [2023-02-15 19:42:50,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827901677] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:42:50,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:42:50,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:42:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341145674] [2023-02-15 19:42:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:42:50,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:42:50,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:42:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:42:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:42:50,798 INFO L87 Difference]: Start difference. First operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 52 states have internal predecessors, (63), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 19:42:50,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:42:50,866 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2023-02-15 19:42:50,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:42:50,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-02-15 19:42:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:42:50,874 INFO L225 Difference]: With dead ends: 131 [2023-02-15 19:42:50,874 INFO L226 Difference]: Without dead ends: 64 [2023-02-15 19:42:50,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:42:50,879 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:42:50,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 99 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:42:50,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-15 19:42:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2023-02-15 19:42:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 19:42:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-02-15 19:42:50,907 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 28 [2023-02-15 19:42:50,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:42:50,907 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-02-15 19:42:50,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 19:42:50,908 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-02-15 19:42:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:42:50,909 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:42:50,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:42:50,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 19:42:50,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:42:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:42:50,910 INFO L85 PathProgramCache]: Analyzing trace with hash -109345869, now seen corresponding path program 1 times [2023-02-15 19:42:50,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:42:50,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964660445] [2023-02-15 19:42:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:42:50,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:42:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 19:42:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:42:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-15 19:42:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 19:42:51,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:42:51,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964660445] [2023-02-15 19:42:51,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964660445] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:42:51,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:42:51,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 19:42:51,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074854387] [2023-02-15 19:42:51,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:42:51,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 19:42:51,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:42:51,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 19:42:51,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 19:42:51,074 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 19:42:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:42:51,154 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2023-02-15 19:42:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 19:42:51,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-02-15 19:42:51,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:42:51,155 INFO L225 Difference]: With dead ends: 70 [2023-02-15 19:42:51,155 INFO L226 Difference]: Without dead ends: 68 [2023-02-15 19:42:51,156 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 [2023-02-15 19:42:51,157 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 24 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:42:51,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 192 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:42:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-15 19:42:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2023-02-15 19:42:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 50 states have internal predecessors, (55), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 19:42:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2023-02-15 19:42:51,164 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 28 [2023-02-15 19:42:51,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:42:51,165 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2023-02-15 19:42:51,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 19:42:51,165 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2023-02-15 19:42:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:42:51,166 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:42:51,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:42:51,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 19:42:51,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:42:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:42:51,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1465257436, now seen corresponding path program 1 times [2023-02-15 19:42:51,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:42:51,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139899472] [2023-02-15 19:42:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:42:51,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:42:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 19:42:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:51,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:42:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:51,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-15 19:42:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 19:42:51,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:42:51,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139899472] [2023-02-15 19:42:51,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139899472] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:42:51,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:42:51,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 19:42:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793266215] [2023-02-15 19:42:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:42:51,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 19:42:51,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:42:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 19:42:51,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 19:42:51,520 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 19:42:51,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:42:51,865 INFO L93 Difference]: Finished difference Result 186 states and 229 transitions. [2023-02-15 19:42:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 19:42:51,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-02-15 19:42:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:42:51,871 INFO L225 Difference]: With dead ends: 186 [2023-02-15 19:42:51,872 INFO L226 Difference]: Without dead ends: 129 [2023-02-15 19:42:51,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-15 19:42:51,877 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 126 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 19:42:51,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 246 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 19:42:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-15 19:42:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 99. [2023-02-15 19:42:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 77 states have internal predecessors, (83), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (21), 14 states have call predecessors, (21), 14 states have call successors, (21) [2023-02-15 19:42:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2023-02-15 19:42:51,897 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 28 [2023-02-15 19:42:51,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:42:51,898 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2023-02-15 19:42:51,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 19:42:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2023-02-15 19:42:51,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-15 19:42:51,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:42:51,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:42:51,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 19:42:51,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:42:51,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:42:51,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1566335676, now seen corresponding path program 1 times [2023-02-15 19:42:51,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:42:51,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678876937] [2023-02-15 19:42:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:42:51,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:42:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:53,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 19:42:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:53,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:42:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 19:42:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:42:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:54,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:42:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:54,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 19:42:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-15 19:42:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:54,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-15 19:42:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 19:42:54,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:42:54,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678876937] [2023-02-15 19:42:54,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678876937] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:42:54,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160361579] [2023-02-15 19:42:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:42:54,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:42:54,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:42:54,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:42:54,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 19:42:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:42:55,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 202 conjunts are in the unsatisfiable core [2023-02-15 19:42:55,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:42:55,352 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 19:42:55,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-15 19:42:55,565 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-15 19:42:55,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-02-15 19:42:55,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:42:55,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:42:57,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:42:57,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:42:57,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:42:57,101 INFO L321 Elim1Store]: treesize reduction 158, result has 24.0 percent of original size [2023-02-15 19:42:57,102 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 [2023-02-15 19:42:57,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:42:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:42:57,130 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 [2023-02-15 19:42:57,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:42:57,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:42:57,140 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 [2023-02-15 19:42:57,156 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-02-15 19:42:57,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-02-15 19:42:57,176 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2023-02-15 19:42:57,177 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 [2023-02-15 19:42:57,187 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:42:57,187 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 [2023-02-15 19:42:57,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:42:57,202 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-02-15 19:42:57,202 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 [2023-02-15 19:42:57,209 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 [2023-02-15 19:42:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 19:42:57,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:42:59,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160361579] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:42:59,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:42:59,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 59 [2023-02-15 19:42:59,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171081924] [2023-02-15 19:42:59,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:42:59,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-02-15 19:42:59,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:42:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-02-15 19:42:59,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4031, Unknown=5, NotChecked=0, Total=4290 [2023-02-15 19:42:59,760 INFO L87 Difference]: Start difference. First operand 99 states and 118 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) [2023-02-15 19:43:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:43:04,856 INFO L93 Difference]: Finished difference Result 241 states and 284 transitions. [2023-02-15 19:43:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-02-15 19:43:04,857 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 [2023-02-15 19:43:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:43:04,860 INFO L225 Difference]: With dead ends: 241 [2023-02-15 19:43:04,861 INFO L226 Difference]: Without dead ends: 181 [2023-02-15 19:43:04,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=815, Invalid=8882, Unknown=5, NotChecked=0, Total=9702 [2023-02-15 19:43:04,866 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 599 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 2962 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-02-15 19:43:04,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2083 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2962 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-02-15 19:43:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-15 19:43:04,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 119. [2023-02-15 19:43:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.160919540229885) internal successors, (101), 93 states have internal predecessors, (101), 16 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (24), 17 states have call predecessors, (24), 16 states have call successors, (24) [2023-02-15 19:43:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2023-02-15 19:43:04,890 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 63 [2023-02-15 19:43:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:43:04,891 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2023-02-15 19:43:04,892 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) [2023-02-15 19:43:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2023-02-15 19:43:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-15 19:43:04,898 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:43:04,898 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] [2023-02-15 19:43:04,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 19:43:05,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:43:05,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:43:05,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:43:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1979205398, now seen corresponding path program 1 times [2023-02-15 19:43:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:43:05,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077761984] [2023-02-15 19:43:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:43:05,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:43:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 19:43:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 19:43:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:43:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 19:43:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:43:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-15 19:43:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-15 19:43:05,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:43:05,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077761984] [2023-02-15 19:43:05,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077761984] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:43:05,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481147311] [2023-02-15 19:43:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:43:05,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:43:05,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:43:05,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:43:05,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 19:43:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 19:43:05,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:43:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-15 19:43:05,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:43:05,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481147311] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:43:05,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 19:43:05,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-02-15 19:43:05,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005664763] [2023-02-15 19:43:05,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:43:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 19:43:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:43:05,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 19:43:05,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-15 19:43:05,332 INFO L87 Difference]: Start difference. First operand 119 states and 141 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, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-15 19:43:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:43:05,356 INFO L93 Difference]: Finished difference Result 203 states and 239 transitions. [2023-02-15 19:43:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 19:43:05,356 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, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2023-02-15 19:43:05,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:43:05,357 INFO L225 Difference]: With dead ends: 203 [2023-02-15 19:43:05,357 INFO L226 Difference]: Without dead ends: 127 [2023-02-15 19:43:05,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-15 19:43:05,358 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:43:05,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:43:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-15 19:43:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-02-15 19:43:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 97 states have internal predecessors, (106), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (25), 19 states have call predecessors, (25), 16 states have call successors, (25) [2023-02-15 19:43:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2023-02-15 19:43:05,372 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 71 [2023-02-15 19:43:05,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:43:05,372 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2023-02-15 19:43:05,372 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, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-15 19:43:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2023-02-15 19:43:05,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-15 19:43:05,373 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:43:05,373 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] [2023-02-15 19:43:05,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 19:43:05,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:43:05,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:43:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:43:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2093878652, now seen corresponding path program 1 times [2023-02-15 19:43:05,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:43:05,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107761685] [2023-02-15 19:43:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:43:05,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:43:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 19:43:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:06,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 19:43:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:43:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 19:43:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:06,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:43:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-15 19:43:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 19:43:06,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:43:06,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107761685] [2023-02-15 19:43:06,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107761685] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:43:06,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36669197] [2023-02-15 19:43:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:43:06,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:43:06,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:43:06,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:43:06,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 19:43:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:06,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-15 19:43:06,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:43:06,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:43:06,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:43:06,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:43:06,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:43:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-15 19:43:07,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:43:07,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36669197] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:43:07,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 19:43:07,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [28] total 35 [2023-02-15 19:43:07,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016812110] [2023-02-15 19:43:07,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:43:07,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 19:43:07,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:43:07,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 19:43:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1096, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 19:43:07,202 INFO L87 Difference]: Start difference. First operand 125 states and 147 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, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 19:43:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:43:07,658 INFO L93 Difference]: Finished difference Result 261 states and 302 transitions. [2023-02-15 19:43:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 19:43:07,658 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, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 71 [2023-02-15 19:43:07,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:43:07,659 INFO L225 Difference]: With dead ends: 261 [2023-02-15 19:43:07,659 INFO L226 Difference]: Without dead ends: 130 [2023-02-15 19:43:07,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2023-02-15 19:43:07,660 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 145 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 19:43:07,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 238 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 19:43:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-15 19:43:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2023-02-15 19:43:07,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 94 states have internal predecessors, (102), 14 states have call successors, (14), 9 states have call predecessors, (14), 13 states have return successors, (19), 16 states have call predecessors, (19), 14 states have call successors, (19) [2023-02-15 19:43:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2023-02-15 19:43:07,670 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 71 [2023-02-15 19:43:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:43:07,670 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2023-02-15 19:43:07,671 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, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 19:43:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2023-02-15 19:43:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-15 19:43:07,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:43:07,671 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:43:07,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 19:43:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:43:07,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:43:07,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:43:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash -818250910, now seen corresponding path program 1 times [2023-02-15 19:43:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:43:07,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711957178] [2023-02-15 19:43:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:43:07,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:43:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 19:43:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:08,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 19:43:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:09,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:43:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 19:43:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:09,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-15 19:43:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-15 19:43:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 19:43:09,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:43:09,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711957178] [2023-02-15 19:43:09,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711957178] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:43:09,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303323851] [2023-02-15 19:43:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:43:09,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:43:09,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:43:09,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:43:09,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 19:43:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:09,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 197 conjunts are in the unsatisfiable core [2023-02-15 19:43:09,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:43:10,204 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 19:43:10,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-15 19:43:10,411 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 19:43:10,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-15 19:43:10,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:43:10,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:43:11,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:43:11,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:43:11,465 INFO L321 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2023-02-15 19:43:11,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 217 treesize of output 164 [2023-02-15 19:43:11,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:43:11,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:43:11,475 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 49 treesize of output 38 [2023-02-15 19:43:11,483 INFO L321 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-02-15 19:43:11,483 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 273 treesize of output 173 [2023-02-15 19:43:11,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:43:11,490 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 111 treesize of output 155 [2023-02-15 19:43:11,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:43:11,496 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 178 treesize of output 150 [2023-02-15 19:43:11,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:43:11,501 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 0 case distinctions, treesize of input 152 treesize of output 110 [2023-02-15 19:43:11,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 72 [2023-02-15 19:43:11,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:43:11,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 17 treesize of output 7 [2023-02-15 19:43:11,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2023-02-15 19:43:11,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 27 [2023-02-15 19:43:11,528 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 15 treesize of output 13 [2023-02-15 19:43:11,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:43:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 19:43:12,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:43:14,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303323851] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:43:14,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:43:14,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-02-15 19:43:14,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346793827] [2023-02-15 19:43:14,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:43:14,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-15 19:43:14,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:43:14,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-15 19:43:14,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2938, Unknown=8, NotChecked=0, Total=3192 [2023-02-15 19:43:14,696 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 50 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 40 states have internal predecessors, (90), 11 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 11 states have call successors, (16) [2023-02-15 19:43:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:43:19,269 INFO L93 Difference]: Finished difference Result 267 states and 302 transitions. [2023-02-15 19:43:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-15 19:43:19,270 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 40 states have internal predecessors, (90), 11 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 11 states have call successors, (16) Word has length 66 [2023-02-15 19:43:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:43:19,270 INFO L225 Difference]: With dead ends: 267 [2023-02-15 19:43:19,271 INFO L226 Difference]: Without dead ends: 170 [2023-02-15 19:43:19,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=902, Invalid=7439, Unknown=31, NotChecked=0, Total=8372 [2023-02-15 19:43:19,273 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 615 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 166 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:43:19,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1074 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1985 Invalid, 13 Unknown, 0 Unchecked, 2.1s Time] [2023-02-15 19:43:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-15 19:43:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 119. [2023-02-15 19:43:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.10989010989011) internal successors, (101), 93 states have internal predecessors, (101), 14 states have call successors, (14), 10 states have call predecessors, (14), 12 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2023-02-15 19:43:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2023-02-15 19:43:19,283 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 66 [2023-02-15 19:43:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:43:19,284 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2023-02-15 19:43:19,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 40 states have internal predecessors, (90), 11 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 11 states have call successors, (16) [2023-02-15 19:43:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2023-02-15 19:43:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-02-15 19:43:19,285 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:43:19,285 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:43:19,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 19:43:19,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:43:19,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:43:19,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:43:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1333141201, now seen corresponding path program 1 times [2023-02-15 19:43:19,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:43:19,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639543314] [2023-02-15 19:43:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:43:19,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:43:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 19:43:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 19:43:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:43:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 19:43:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-15 19:43:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-02-15 19:43:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:43:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 19:43:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-15 19:43:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-02-15 19:43:19,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:43:19,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639543314] [2023-02-15 19:43:19,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639543314] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:43:19,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:43:19,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 19:43:19,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908118708] [2023-02-15 19:43:19,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:43:19,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 19:43:19,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:43:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 19:43:19,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-15 19:43:19,650 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-15 19:43:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:43:19,755 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2023-02-15 19:43:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 19:43:19,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 90 [2023-02-15 19:43:19,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:43:19,756 INFO L225 Difference]: With dead ends: 127 [2023-02-15 19:43:19,757 INFO L226 Difference]: Without dead ends: 125 [2023-02-15 19:43:19,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-15 19:43:19,758 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:43:19,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 186 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:43:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-15 19:43:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-02-15 19:43:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 95 states have (on average 1.105263157894737) internal successors, (105), 98 states have internal predecessors, (105), 14 states have call successors, (14), 10 states have call predecessors, (14), 14 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2023-02-15 19:43:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2023-02-15 19:43:19,772 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 90 [2023-02-15 19:43:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:43:19,772 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2023-02-15 19:43:19,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-15 19:43:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2023-02-15 19:43:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-02-15 19:43:19,777 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:43:19,777 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:43:19,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 19:43:19,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:43:19,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:43:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1594235602, now seen corresponding path program 2 times [2023-02-15 19:43:19,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:43:19,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062899450] [2023-02-15 19:43:19,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:43:19,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:43:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 19:43:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 19:43:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:43:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 19:43:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 19:43:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-15 19:43:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-02-15 19:43:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:43:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 19:43:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-15 19:43:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:43:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 34 proven. 27 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-15 19:43:20,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:43:20,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062899450] [2023-02-15 19:43:20,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062899450] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:43:20,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134147914] [2023-02-15 19:43:20,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 19:43:20,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:43:20,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:43:20,729 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:43:20,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 19:43:20,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 19:43:20,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:43:20,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 239 conjunts are in the unsatisfiable core [2023-02-15 19:43:20,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:43:21,017 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 19:43:21,018 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 11 treesize of output 11 [2023-02-15 19:43:21,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:43:21,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:43:21,704 INFO L321 Elim1Store]: treesize reduction 144, result has 42.6 percent of original size [2023-02-15 19:43:21,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 218 [2023-02-15 19:43:21,792 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-02-15 19:43:21,792 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 317 treesize of output 283 [2023-02-15 19:43:22,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:43:22,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:43:22,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:43:22,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:43:45,448 WARN L233 SmtUtils]: Spent 12.54s on a formula simplification. DAG size of input: 142 DAG size of output: 122 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 19:43:46,248 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:45:34,682 WARN L233 SmtUtils]: Spent 1.81m on a formula simplification. DAG size of input: 183 DAG size of output: 61 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-15 19:45:34,682 INFO L321 Elim1Store]: treesize reduction 417, result has 20.0 percent of original size [2023-02-15 19:45:34,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 9 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 14 new quantified variables, introduced 30 case distinctions, treesize of input 2595 treesize of output 2148 [2023-02-15 19:45:34,766 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:46:40,985 WARN L233 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 225 DAG size of output: 40 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-15 19:46:40,986 INFO L321 Elim1Store]: treesize reduction 767, result has 8.0 percent of original size [2023-02-15 19:46:40,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 36 case distinctions, treesize of input 1948 treesize of output 2209 [2023-02-15 19:46:41,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:46:41,057 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:46:41,195 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:46:41,328 INFO L217 Elim1Store]: Index analysis took 261 ms