./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/pthread/lazy01.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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:55:45,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:55:45,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:55:45,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:55:45,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:55:45,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:55:45,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:55:45,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:55:45,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:55:45,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:55:45,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:55:45,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:55:45,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:55:45,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:55:45,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:55:45,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:55:45,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:55:45,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:55:45,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:55:45,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:55:45,902 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:55:45,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:55:45,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:55:45,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:55:45,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:55:45,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:55:45,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:55:45,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:55:45,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:55:45,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:55:45,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:55:45,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:55:45,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:55:45,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:55:45,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:55:45,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:55:45,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:55:45,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:55:45,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:55:45,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:55:45,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:55:45,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:55:45,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:55:45,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:55:45,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:55:45,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:55:45,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:55:45,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:55:45,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:55:45,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:55:45,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:55:45,965 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:55:45,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:55:45,967 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:55:45,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:55:45,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:55:45,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:55:45,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:55:45,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:55:45,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:55:45,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:55:45,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:55:45,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:55:45,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:55:45,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:55:45,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:55:45,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:55:45,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:55:45,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:55:45,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:55:45,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:55:45,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:55:45,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:55:45,971 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:55:45,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:55:45,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:55:45,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2022-07-12 09:55:46,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:55:46,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:55:46,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:55:46,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:55:46,201 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:55:46,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/lazy01.i [2022-07-12 09:55:46,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17315a8ed/ba34550ebca64c94ba52c6de01394ee3/FLAG4c9e6703a [2022-07-12 09:55:46,680 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:55:46,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2022-07-12 09:55:46,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17315a8ed/ba34550ebca64c94ba52c6de01394ee3/FLAG4c9e6703a [2022-07-12 09:55:46,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17315a8ed/ba34550ebca64c94ba52c6de01394ee3 [2022-07-12 09:55:46,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:55:46,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:55:46,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:55:46,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:55:46,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:55:46,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:55:46" (1/1) ... [2022-07-12 09:55:46,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c29463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:46, skipping insertion in model container [2022-07-12 09:55:46,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:55:46" (1/1) ... [2022-07-12 09:55:46,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:55:46,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:55:47,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-07-12 09:55:47,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:55:47,065 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:55:47,106 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-07-12 09:55:47,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:55:47,153 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:55:47,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47 WrapperNode [2022-07-12 09:55:47,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:55:47,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:55:47,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:55:47,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:55:47,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,190 INFO L137 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2022-07-12 09:55:47,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:55:47,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:55:47,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:55:47,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:55:47,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:55:47,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:55:47,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:55:47,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:55:47,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (1/1) ... [2022-07-12 09:55:47,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:55:47,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:55:47,257 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) [2022-07-12 09:55:47,266 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 [2022-07-12 09:55:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 09:55:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 09:55:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 09:55:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 09:55:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 09:55:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 09:55:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 09:55:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 09:55:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 09:55:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:55:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 09:55:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 09:55:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:55:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:55:47,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:55:47,291 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 09:55:47,381 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:55:47,382 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:55:47,570 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:55:47,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:55:47,576 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 09:55:47,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:55:47 BoogieIcfgContainer [2022-07-12 09:55:47,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:55:47,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:55:47,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:55:47,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:55:47,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:55:46" (1/3) ... [2022-07-12 09:55:47,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad7591d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:55:47, skipping insertion in model container [2022-07-12 09:55:47,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:55:47" (2/3) ... [2022-07-12 09:55:47,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad7591d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:55:47, skipping insertion in model container [2022-07-12 09:55:47,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:55:47" (3/3) ... [2022-07-12 09:55:47,585 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2022-07-12 09:55:47,589 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 09:55:47,597 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:55:47,597 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 09:55:47,598 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 09:55:47,650 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 09:55:47,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 91 transitions, 206 flow [2022-07-12 09:55:47,719 INFO L129 PetriNetUnfolder]: 1/88 cut-off events. [2022-07-12 09:55:47,719 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 09:55:47,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 1/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-07-12 09:55:47,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 91 transitions, 206 flow [2022-07-12 09:55:47,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 70 transitions, 155 flow [2022-07-12 09:55:47,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:55:47,768 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14c2f25, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c0b91af [2022-07-12 09:55:47,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 09:55:47,788 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2022-07-12 09:55:47,791 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 09:55:47,791 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:55:47,792 INFO L200 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:55:47,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 09:55:47,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:55:47,798 INFO L85 PathProgramCache]: Analyzing trace with hash 992235864, now seen corresponding path program 1 times [2022-07-12 09:55:47,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:55:47,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480804902] [2022-07-12 09:55:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:55:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:55:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:55:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:55:48,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:55:48,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480804902] [2022-07-12 09:55:48,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480804902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:55:48,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:55:48,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:55:48,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780315004] [2022-07-12 09:55:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:55:48,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:55:48,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:55:48,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:55:48,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:55:48,167 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 91 [2022-07-12 09:55:48,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:55:48,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 91 [2022-07-12 09:55:48,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:55:48,241 INFO L129 PetriNetUnfolder]: 19/154 cut-off events. [2022-07-12 09:55:48,242 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-12 09:55:48,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 154 events. 19/154 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 431 event pairs, 9 based on Foata normal form. 2/153 useless extension candidates. Maximal degree in co-relation 152. Up to 37 conditions per place. [2022-07-12 09:55:48,245 INFO L132 encePairwiseOnDemand]: 87/91 looper letters, 12 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2022-07-12 09:55:48,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 201 flow [2022-07-12 09:55:48,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:55:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 09:55:48,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-07-12 09:55:48,259 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-07-12 09:55:48,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-07-12 09:55:48,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-07-12 09:55:48,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:55:48,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-07-12 09:55:48,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,276 INFO L186 Difference]: Start difference. First operand has 80 places, 70 transitions, 155 flow. Second operand 3 states and 247 transitions. [2022-07-12 09:55:48,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 201 flow [2022-07-12 09:55:48,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 189 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 09:55:48,283 INFO L242 Difference]: Finished difference. Result has 78 places, 72 transitions, 165 flow [2022-07-12 09:55:48,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2022-07-12 09:55:48,288 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2022-07-12 09:55:48,288 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 165 flow [2022-07-12 09:55:48,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,289 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:55:48,289 INFO L200 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:55:48,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:55:48,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 09:55:48,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:55:48,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1694904598, now seen corresponding path program 1 times [2022-07-12 09:55:48,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:55:48,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202212340] [2022-07-12 09:55:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:55:48,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:55:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:55:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:55:48,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:55:48,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202212340] [2022-07-12 09:55:48,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202212340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:55:48,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:55:48,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:55:48,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961325746] [2022-07-12 09:55:48,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:55:48,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:55:48,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:55:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:55:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:55:48,357 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-07-12 09:55:48,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:55:48,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-07-12 09:55:48,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:55:48,423 INFO L129 PetriNetUnfolder]: 16/160 cut-off events. [2022-07-12 09:55:48,423 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-12 09:55:48,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 160 events. 16/160 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 484 event pairs, 3 based on Foata normal form. 14/174 useless extension candidates. Maximal degree in co-relation 120. Up to 28 conditions per place. [2022-07-12 09:55:48,425 INFO L132 encePairwiseOnDemand]: 86/91 looper letters, 16 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2022-07-12 09:55:48,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 220 flow [2022-07-12 09:55:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:55:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 09:55:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2022-07-12 09:55:48,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-07-12 09:55:48,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2022-07-12 09:55:48,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2022-07-12 09:55:48,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:55:48,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2022-07-12 09:55:48,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,432 INFO L186 Difference]: Start difference. First operand has 78 places, 72 transitions, 165 flow. Second operand 3 states and 234 transitions. [2022-07-12 09:55:48,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 220 flow [2022-07-12 09:55:48,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 09:55:48,435 INFO L242 Difference]: Finished difference. Result has 79 places, 72 transitions, 172 flow [2022-07-12 09:55:48,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2022-07-12 09:55:48,436 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2022-07-12 09:55:48,436 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 172 flow [2022-07-12 09:55:48,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,437 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:55:48,437 INFO L200 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:55:48,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:55:48,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 09:55:48,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:55:48,438 INFO L85 PathProgramCache]: Analyzing trace with hash 915593402, now seen corresponding path program 1 times [2022-07-12 09:55:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:55:48,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123105029] [2022-07-12 09:55:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:55:48,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:55:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:55:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:55:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:55:48,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123105029] [2022-07-12 09:55:48,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123105029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:55:48,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:55:48,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:55:48,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535773559] [2022-07-12 09:55:48,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:55:48,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:55:48,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:55:48,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:55:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:55:48,519 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 91 [2022-07-12 09:55:48,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:55:48,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 91 [2022-07-12 09:55:48,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:55:48,558 INFO L129 PetriNetUnfolder]: 14/146 cut-off events. [2022-07-12 09:55:48,559 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-12 09:55:48,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 146 events. 14/146 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 402 event pairs, 8 based on Foata normal form. 1/145 useless extension candidates. Maximal degree in co-relation 73. Up to 24 conditions per place. [2022-07-12 09:55:48,560 INFO L132 encePairwiseOnDemand]: 87/91 looper letters, 12 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2022-07-12 09:55:48,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 217 flow [2022-07-12 09:55:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 09:55:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 09:55:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2022-07-12 09:55:48,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2022-07-12 09:55:48,563 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2022-07-12 09:55:48,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2022-07-12 09:55:48,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:55:48,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2022-07-12 09:55:48,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,567 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,568 INFO L186 Difference]: Start difference. First operand has 79 places, 72 transitions, 172 flow. Second operand 4 states and 325 transitions. [2022-07-12 09:55:48,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 217 flow [2022-07-12 09:55:48,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 09:55:48,570 INFO L242 Difference]: Finished difference. Result has 82 places, 72 transitions, 179 flow [2022-07-12 09:55:48,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2022-07-12 09:55:48,571 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2022-07-12 09:55:48,571 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 179 flow [2022-07-12 09:55:48,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,572 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:55:48,572 INFO L200 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:55:48,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:55:48,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 09:55:48,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:55:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash -168826354, now seen corresponding path program 1 times [2022-07-12 09:55:48,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:55:48,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142947505] [2022-07-12 09:55:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:55:48,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:55:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:55:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:55:48,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:55:48,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142947505] [2022-07-12 09:55:48,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142947505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:55:48,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:55:48,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:55:48,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838375981] [2022-07-12 09:55:48,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:55:48,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:55:48,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:55:48,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:55:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:55:48,663 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 91 [2022-07-12 09:55:48,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:55:48,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 91 [2022-07-12 09:55:48,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:55:48,739 INFO L129 PetriNetUnfolder]: 16/141 cut-off events. [2022-07-12 09:55:48,739 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-07-12 09:55:48,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 141 events. 16/141 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 401 event pairs, 1 based on Foata normal form. 2/143 useless extension candidates. Maximal degree in co-relation 164. Up to 24 conditions per place. [2022-07-12 09:55:48,742 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 17 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2022-07-12 09:55:48,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 257 flow [2022-07-12 09:55:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:55:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 09:55:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 480 transitions. [2022-07-12 09:55:48,744 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8791208791208791 [2022-07-12 09:55:48,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 480 transitions. [2022-07-12 09:55:48,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 480 transitions. [2022-07-12 09:55:48,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:55:48,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 480 transitions. [2022-07-12 09:55:48,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,752 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,753 INFO L186 Difference]: Start difference. First operand has 82 places, 72 transitions, 179 flow. Second operand 6 states and 480 transitions. [2022-07-12 09:55:48,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 257 flow [2022-07-12 09:55:48,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 249 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-12 09:55:48,760 INFO L242 Difference]: Finished difference. Result has 88 places, 74 transitions, 200 flow [2022-07-12 09:55:48,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2022-07-12 09:55:48,762 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 8 predicate places. [2022-07-12 09:55:48,766 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 200 flow [2022-07-12 09:55:48,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:48,766 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:55:48,766 INFO L200 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:55:48,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:55:48,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 09:55:48,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:55:48,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1553957284, now seen corresponding path program 1 times [2022-07-12 09:55:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:55:48,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560888715] [2022-07-12 09:55:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:55:48,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:55:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:55:48,800 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:55:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:55:48,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 09:55:48,863 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:55:48,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-12 09:55:48,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-12 09:55:48,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-12 09:55:48,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-12 09:55:48,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-12 09:55:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:55:48,868 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-12 09:55:48,873 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 09:55:48,873 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:55:48,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:55:48 BasicIcfg [2022-07-12 09:55:48,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:55:48,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:55:48,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:55:48,935 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:55:48,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:55:47" (3/4) ... [2022-07-12 09:55:48,937 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 09:55:48,991 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 09:55:48,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:55:48,992 INFO L158 Benchmark]: Toolchain (without parser) took 2281.71ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 64.3MB in the beginning and 82.3MB in the end (delta: -18.0MB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. [2022-07-12 09:55:48,993 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:55:48,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.13ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 138.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 09:55:48,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.19ms. Allocated memory is still 98.6MB. Free memory was 63.6MB in the beginning and 62.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:55:48,994 INFO L158 Benchmark]: Boogie Preprocessor took 22.36ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 60.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:55:48,994 INFO L158 Benchmark]: RCFGBuilder took 363.41ms. Allocated memory is still 98.6MB. Free memory was 60.3MB in the beginning and 47.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 09:55:48,995 INFO L158 Benchmark]: TraceAbstraction took 1354.83ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 47.3MB in the beginning and 88.6MB in the end (delta: -41.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2022-07-12 09:55:48,997 INFO L158 Benchmark]: Witness Printer took 57.20ms. Allocated memory is still 119.5MB. Free memory was 88.6MB in the beginning and 82.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 09:55:48,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.13ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 138.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.19ms. Allocated memory is still 98.6MB. Free memory was 63.6MB in the beginning and 62.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.36ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 60.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 363.41ms. Allocated memory is still 98.6MB. Free memory was 60.3MB in the beginning and 47.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1354.83ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 47.3MB in the beginning and 88.6MB in the end (delta: -41.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. * Witness Printer took 57.20ms. Allocated memory is still 119.5MB. Free memory was 88.6MB in the beginning and 82.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; VAL [mutex={3:0}] [L703] 0 int data = 0; VAL [data=0, mutex={3:0}] [L731] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={3:0}, t1={6:0}, t2={7:0}, t3={5:0}] [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={7:0}, t3={5:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={7:0}, t3={5:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=0, t1={6:0}, t2={7:0}, t3={5:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 123 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 19 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 253 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-12 09:55:49,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE