./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-atomic/peterson.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 ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:40:19,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:40:19,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:40:19,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:40:19,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:40:19,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:40:19,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:40:19,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:40:19,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:40:19,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:40:19,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:40:19,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:40:19,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:40:19,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:40:19,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:40:19,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:40:19,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:40:19,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:40:19,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:40:19,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:40:19,876 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:40:19,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:40:19,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:40:19,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:40:19,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:40:19,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:40:19,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:40:19,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:40:19,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:40:19,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:40:19,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:40:19,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:40:19,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:40:19,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:40:19,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:40:19,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:40:19,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:40:19,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:40:19,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:40:19,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:40:19,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:40:19,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:40:19,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:40:19,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:40:19,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:40:19,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:40:19,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:40:19,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:40:19,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:40:19,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:40:19,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:40:19,918 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:40:19,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:40:19,919 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:40:19,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:40:19,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:40:19,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:40:19,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:40:19,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:40:19,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:40:19,920 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:40:19,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:40:19,920 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:40:19,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:40:19,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:40:19,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:40:19,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:40:19,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:40:19,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:40:19,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:40:19,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:40:19,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:40:19,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:40:19,922 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:40:19,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:40:19,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:40:19,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 [2022-07-13 21:40:20,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:40:20,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:40:20,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:40:20,129 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:40:20,130 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:40:20,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/peterson.i [2022-07-13 21:40:20,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6856bcf84/29ff2a628c72437cb730d0b9cd5c9f77/FLAG3ba0cc625 [2022-07-13 21:40:20,514 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:40:20,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i [2022-07-13 21:40:20,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6856bcf84/29ff2a628c72437cb730d0b9cd5c9f77/FLAG3ba0cc625 [2022-07-13 21:40:20,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6856bcf84/29ff2a628c72437cb730d0b9cd5c9f77 [2022-07-13 21:40:20,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:40:20,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:40:20,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:40:20,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:40:20,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:40:20,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:40:20" (1/1) ... [2022-07-13 21:40:20,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed179dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:20, skipping insertion in model container [2022-07-13 21:40:20,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:40:20" (1/1) ... [2022-07-13 21:40:20,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:40:20,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:40:21,096 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-13 21:40:21,210 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-atomic/peterson.i[30997,31010] [2022-07-13 21:40:21,218 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-atomic/peterson.i[31682,31695] [2022-07-13 21:40:21,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:40:21,230 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:40:21,247 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-13 21:40:21,257 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-atomic/peterson.i[30997,31010] [2022-07-13 21:40:21,258 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-atomic/peterson.i[31682,31695] [2022-07-13 21:40:21,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:40:21,287 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:40:21,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21 WrapperNode [2022-07-13 21:40:21,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:40:21,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:40:21,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:40:21,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:40:21,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,344 INFO L137 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2022-07-13 21:40:21,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:40:21,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:40:21,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:40:21,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:40:21,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:40:21,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:40:21,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:40:21,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:40:21,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (1/1) ... [2022-07-13 21:40:21,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:40:21,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:40:21,403 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) [2022-07-13 21:40:21,410 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 [2022-07-13 21:40:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 21:40:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-13 21:40:21,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-13 21:40:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-13 21:40:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-13 21:40:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:40:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:40:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:40:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:40:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:40:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:40:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:40:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:40:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:40:21,434 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:40:21,503 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:40:21,504 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:40:21,655 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:40:21,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:40:21,660 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:40:21,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:40:21 BoogieIcfgContainer [2022-07-13 21:40:21,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:40:21,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:40:21,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:40:21,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:40:21,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:40:20" (1/3) ... [2022-07-13 21:40:21,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9f985a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:40:21, skipping insertion in model container [2022-07-13 21:40:21,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:21" (2/3) ... [2022-07-13 21:40:21,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9f985a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:40:21, skipping insertion in model container [2022-07-13 21:40:21,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:40:21" (3/3) ... [2022-07-13 21:40:21,672 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2022-07-13 21:40:21,676 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:40:21,682 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:40:21,682 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:40:21,682 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:40:21,723 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 21:40:21,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 180 flow [2022-07-13 21:40:21,774 INFO L129 PetriNetUnfolder]: 6/80 cut-off events. [2022-07-13 21:40:21,775 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:40:21,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 6/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-07-13 21:40:21,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 180 flow [2022-07-13 21:40:21,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 149 flow [2022-07-13 21:40:21,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:40:21,792 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@60be0480, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@588b11e1 [2022-07-13 21:40:21,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 21:40:21,803 INFO L129 PetriNetUnfolder]: 3/49 cut-off events. [2022-07-13 21:40:21,805 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:40:21,805 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:40:21,805 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] [2022-07-13 21:40:21,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:40:21,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:40:21,809 INFO L85 PathProgramCache]: Analyzing trace with hash -319828652, now seen corresponding path program 1 times [2022-07-13 21:40:21,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:40:21,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907906865] [2022-07-13 21:40:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:40:21,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:40:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:40:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:40:21,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:40:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907906865] [2022-07-13 21:40:21,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907906865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:40:21,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:40:21,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:40:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215824178] [2022-07-13 21:40:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:40:22,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:40:22,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:40:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:40:22,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:40:22,023 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-07-13 21:40:22,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2022-07-13 21:40:22,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:40:22,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-07-13 21:40:22,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:40:22,081 INFO L129 PetriNetUnfolder]: 16/145 cut-off events. [2022-07-13 21:40:22,081 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-07-13 21:40:22,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 145 events. 16/145 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 476 event pairs, 4 based on Foata normal form. 19/152 useless extension candidates. Maximal degree in co-relation 138. Up to 24 conditions per place. [2022-07-13 21:40:22,083 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 11 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2022-07-13 21:40:22,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 180 flow [2022-07-13 21:40:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:40:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:40:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2022-07-13 21:40:22,092 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9065040650406504 [2022-07-13 21:40:22,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2022-07-13 21:40:22,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2022-07-13 21:40:22,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:40:22,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2022-07-13 21:40:22,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2022-07-13 21:40:22,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-07-13 21:40:22,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-07-13 21:40:22,102 INFO L186 Difference]: Start difference. First operand has 71 places, 70 transitions, 149 flow. Second operand 3 states and 223 transitions. [2022-07-13 21:40:22,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 180 flow [2022-07-13 21:40:22,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 173 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 21:40:22,106 INFO L242 Difference]: Finished difference. Result has 72 places, 67 transitions, 156 flow [2022-07-13 21:40:22,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2022-07-13 21:40:22,111 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2022-07-13 21:40:22,112 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 156 flow [2022-07-13 21:40:22,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2022-07-13 21:40:22,112 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:40:22,113 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] [2022-07-13 21:40:22,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:40:22,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:40:22,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:40:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1668992913, now seen corresponding path program 1 times [2022-07-13 21:40:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:40:22,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347814739] [2022-07-13 21:40:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:40:22,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:40:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:40:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:40:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:40:22,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347814739] [2022-07-13 21:40:22,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347814739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:40:22,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:40:22,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:40:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080344402] [2022-07-13 21:40:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:40:22,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:40:22,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:40:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:40:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:40:22,165 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-07-13 21:40:22,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-07-13 21:40:22,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:40:22,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-07-13 21:40:22,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:40:22,219 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2022-07-13 21:40:22,220 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-07-13 21:40:22,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 127 events. 10/127 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 370 event pairs, 5 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 82. Up to 22 conditions per place. [2022-07-13 21:40:22,221 INFO L132 encePairwiseOnDemand]: 78/82 looper letters, 9 selfloop transitions, 2 changer transitions 1/68 dead transitions. [2022-07-13 21:40:22,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 183 flow [2022-07-13 21:40:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:40:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:40:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2022-07-13 21:40:22,223 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8739837398373984 [2022-07-13 21:40:22,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2022-07-13 21:40:22,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2022-07-13 21:40:22,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:40:22,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2022-07-13 21:40:22,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2022-07-13 21:40:22,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-07-13 21:40:22,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-07-13 21:40:22,229 INFO L186 Difference]: Start difference. First operand has 72 places, 67 transitions, 156 flow. Second operand 3 states and 215 transitions. [2022-07-13 21:40:22,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 183 flow [2022-07-13 21:40:22,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:40:22,232 INFO L242 Difference]: Finished difference. Result has 73 places, 67 transitions, 160 flow [2022-07-13 21:40:22,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2022-07-13 21:40:22,234 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2022-07-13 21:40:22,234 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 160 flow [2022-07-13 21:40:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-07-13 21:40:22,235 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:40:22,235 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] [2022-07-13 21:40:22,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:40:22,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:40:22,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:40:22,237 INFO L85 PathProgramCache]: Analyzing trace with hash -814098879, now seen corresponding path program 1 times [2022-07-13 21:40:22,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:40:22,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342750176] [2022-07-13 21:40:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:40:22,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:40:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:40:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:40:22,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:40:22,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342750176] [2022-07-13 21:40:22,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342750176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:40:22,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:40:22,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:40:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229682410] [2022-07-13 21:40:22,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:40:22,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:40:22,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:40:22,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:40:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:40:22,367 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-07-13 21:40:22,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2022-07-13 21:40:22,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:40:22,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-07-13 21:40:22,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:40:22,563 INFO L129 PetriNetUnfolder]: 83/326 cut-off events. [2022-07-13 21:40:22,564 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-13 21:40:22,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 326 events. 83/326 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1529 event pairs, 9 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 465. Up to 48 conditions per place. [2022-07-13 21:40:22,567 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 26 selfloop transitions, 13 changer transitions 19/108 dead transitions. [2022-07-13 21:40:22,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 363 flow [2022-07-13 21:40:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:40:22,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:40:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 662 transitions. [2022-07-13 21:40:22,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8073170731707318 [2022-07-13 21:40:22,573 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 662 transitions. [2022-07-13 21:40:22,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 662 transitions. [2022-07-13 21:40:22,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:40:22,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 662 transitions. [2022-07-13 21:40:22,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.2) internal successors, (662), 10 states have internal predecessors, (662), 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) [2022-07-13 21:40:22,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-07-13 21:40:22,579 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-07-13 21:40:22,580 INFO L186 Difference]: Start difference. First operand has 73 places, 67 transitions, 160 flow. Second operand 10 states and 662 transitions. [2022-07-13 21:40:22,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 363 flow [2022-07-13 21:40:22,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 108 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:40:22,584 INFO L242 Difference]: Finished difference. Result has 90 places, 79 transitions, 266 flow [2022-07-13 21:40:22,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2022-07-13 21:40:22,585 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2022-07-13 21:40:22,585 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 266 flow [2022-07-13 21:40:22,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2022-07-13 21:40:22,585 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:40:22,586 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] [2022-07-13 21:40:22,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:40:22,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:40:22,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:40:22,588 INFO L85 PathProgramCache]: Analyzing trace with hash 520676303, now seen corresponding path program 2 times [2022-07-13 21:40:22,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:40:22,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724650710] [2022-07-13 21:40:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:40:22,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:40:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:40:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:40:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:40:22,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724650710] [2022-07-13 21:40:22,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724650710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:40:22,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:40:22,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:40:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818796531] [2022-07-13 21:40:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:40:22,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:40:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:40:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:40:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:40:22,683 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-07-13 21:40:22,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2022-07-13 21:40:22,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:40:22,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-07-13 21:40:22,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:40:22,798 INFO L129 PetriNetUnfolder]: 93/307 cut-off events. [2022-07-13 21:40:22,799 INFO L130 PetriNetUnfolder]: For 215/237 co-relation queries the response was YES. [2022-07-13 21:40:22,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 307 events. 93/307 cut-off events. For 215/237 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1322 event pairs, 9 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 693. Up to 55 conditions per place. [2022-07-13 21:40:22,800 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-07-13 21:40:22,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 114 transitions, 523 flow [2022-07-13 21:40:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:40:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:40:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 656 transitions. [2022-07-13 21:40:22,802 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-07-13 21:40:22,803 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 656 transitions. [2022-07-13 21:40:22,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 656 transitions. [2022-07-13 21:40:22,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:40:22,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 656 transitions. [2022-07-13 21:40:22,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.6) internal successors, (656), 10 states have internal predecessors, (656), 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) [2022-07-13 21:40:22,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-07-13 21:40:22,810 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-07-13 21:40:22,810 INFO L186 Difference]: Start difference. First operand has 90 places, 79 transitions, 266 flow. Second operand 10 states and 656 transitions. [2022-07-13 21:40:22,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 114 transitions, 523 flow [2022-07-13 21:40:22,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 493 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-07-13 21:40:22,821 INFO L242 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2022-07-13 21:40:22,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2022-07-13 21:40:22,822 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2022-07-13 21:40:22,822 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2022-07-13 21:40:22,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2022-07-13 21:40:22,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-07-13 21:40:22,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-13 21:40:22,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-13 21:40:22,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-07-13 21:40:22,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-13 21:40:22,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-13 21:40:22,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:40:22,826 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-13 21:40:22,831 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:40:22,831 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:40:22,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:40:22 BasicIcfg [2022-07-13 21:40:22,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:40:22,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:40:22,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:40:22,837 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:40:22,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:40:21" (3/4) ... [2022-07-13 21:40:22,839 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:40:22,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-07-13 21:40:22,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-07-13 21:40:22,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-13 21:40:22,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 21:40:22,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:40:22,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 21:40:22,874 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:40:22,874 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:40:22,875 INFO L158 Benchmark]: Toolchain (without parser) took 1970.87ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 69.4MB in the beginning and 53.9MB in the end (delta: 15.5MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2022-07-13 21:40:22,875 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory was 56.5MB in the beginning and 56.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:40:22,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.88ms. Allocated memory is still 100.7MB. Free memory was 69.2MB in the beginning and 65.9MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 21:40:22,876 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.53ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 64.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:40:22,876 INFO L158 Benchmark]: Boogie Preprocessor took 29.64ms. Allocated memory is still 100.7MB. Free memory was 63.8MB in the beginning and 62.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:40:22,877 INFO L158 Benchmark]: RCFGBuilder took 286.54ms. Allocated memory is still 100.7MB. Free memory was 62.5MB in the beginning and 50.9MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 21:40:22,879 INFO L158 Benchmark]: TraceAbstraction took 1172.85ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 50.3MB in the beginning and 56.0MB in the end (delta: -5.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-13 21:40:22,879 INFO L158 Benchmark]: Witness Printer took 37.60ms. Allocated memory is still 125.8MB. Free memory was 56.0MB in the beginning and 53.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:40:22,880 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 100.7MB. Free memory was 56.5MB in the beginning and 56.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.88ms. Allocated memory is still 100.7MB. Free memory was 69.2MB in the beginning and 65.9MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.53ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 64.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.64ms. Allocated memory is still 100.7MB. Free memory was 63.8MB in the beginning and 62.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 286.54ms. Allocated memory is still 100.7MB. Free memory was 62.5MB in the beginning and 50.9MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1172.85ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 50.3MB in the beginning and 56.0MB in the end (delta: -5.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 37.60ms. Allocated memory is still 125.8MB. Free memory was 56.0MB in the beginning and 53.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 6 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: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243 IncrementalHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 61 mSDtfsCounter, 243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 0.2s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 236 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 21:40:22,908 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 Result: TRUE