./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 04:21:01,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 04:21:01,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 04:21:01,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 04:21:01,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 04:21:01,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 04:21:01,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 04:21:01,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 04:21:01,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 04:21:01,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 04:21:01,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 04:21:01,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 04:21:01,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 04:21:01,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 04:21:01,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 04:21:01,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 04:21:01,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 04:21:01,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 04:21:01,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 04:21:01,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 04:21:01,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 04:21:01,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 04:21:01,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 04:21:01,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 04:21:01,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 04:21:01,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 04:21:01,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 04:21:01,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 04:21:01,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 04:21:01,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 04:21:01,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 04:21:01,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 04:21:01,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 04:21:01,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 04:21:01,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 04:21:01,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 04:21:01,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 04:21:01,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 04:21:01,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 04:21:01,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 04:21:01,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 04:21:01,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 04:21:01,995 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 04:21:01,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 04:21:01,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 04:21:01,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 04:21:01,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 04:21:01,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 04:21:01,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 04:21:01,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 04:21:01,999 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 04:21:01,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 04:21:02,000 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 04:21:02,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 04:21:02,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 04:21:02,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 04:21:02,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 04:21:02,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 04:21:02,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 04:21:02,001 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 04:21:02,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 04:21:02,002 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 04:21:02,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 04:21:02,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 04:21:02,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 04:21:02,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 04:21:02,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:21:02,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 04:21:02,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 04:21:02,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 04:21:02,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 04:21:02,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 04:21:02,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 04:21:02,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 04:21:02,005 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 04:21:02,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 04:21:02,005 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 04:21:02,005 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 04:21:02,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 04:21:02,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 04:21:02,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 04:21:02,309 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 04:21:02,309 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 04:21:02,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-31 04:21:03,451 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 04:21:03,714 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 04:21:03,715 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-31 04:21:03,726 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1b869f4/6dd4ed14569a4aa2a9cfe27be4535b97/FLAG727e313ee [2023-08-31 04:21:03,744 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1b869f4/6dd4ed14569a4aa2a9cfe27be4535b97 [2023-08-31 04:21:03,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 04:21:03,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 04:21:03,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 04:21:03,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 04:21:03,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 04:21:03,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:21:03" (1/1) ... [2023-08-31 04:21:03,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110029ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:03, skipping insertion in model container [2023-08-31 04:21:03,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:21:03" (1/1) ... [2023-08-31 04:21:03,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 04:21:03,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 04:21:04,117 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-08-31 04:21:04,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:21:04,144 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 04:21:04,208 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-08-31 04:21:04,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:21:04,264 INFO L208 MainTranslator]: Completed translation [2023-08-31 04:21:04,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04 WrapperNode [2023-08-31 04:21:04,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 04:21:04,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 04:21:04,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 04:21:04,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 04:21:04,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,307 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-08-31 04:21:04,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 04:21:04,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 04:21:04,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 04:21:04,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 04:21:04,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,338 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 04:21:04,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 04:21:04,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 04:21:04,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 04:21:04,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (1/1) ... [2023-08-31 04:21:04,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:21:04,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:21:04,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 04:21:04,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 04:21:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 04:21:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 04:21:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-31 04:21:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 04:21:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 04:21:04,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 04:21:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 04:21:04,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 04:21:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 04:21:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 04:21:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 04:21:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 04:21:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 04:21:04,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 04:21:04,420 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 04:21:04,557 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 04:21:04,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 04:21:04,774 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 04:21:04,782 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 04:21:04,782 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-31 04:21:04,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:21:04 BoogieIcfgContainer [2023-08-31 04:21:04,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 04:21:04,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 04:21:04,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 04:21:04,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 04:21:04,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 04:21:03" (1/3) ... [2023-08-31 04:21:04,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514112a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:21:04, skipping insertion in model container [2023-08-31 04:21:04,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:21:04" (2/3) ... [2023-08-31 04:21:04,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514112a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:21:04, skipping insertion in model container [2023-08-31 04:21:04,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:21:04" (3/3) ... [2023-08-31 04:21:04,791 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-08-31 04:21:04,797 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 04:21:04,805 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 04:21:04,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 04:21:04,806 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 04:21:04,862 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 04:21:04,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 131 transitions, 278 flow [2023-08-31 04:21:04,978 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2023-08-31 04:21:04,978 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:21:04,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 10/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2023-08-31 04:21:04,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 131 transitions, 278 flow [2023-08-31 04:21:04,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 118 transitions, 248 flow [2023-08-31 04:21:04,991 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 04:21:05,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 118 transitions, 248 flow [2023-08-31 04:21:05,014 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 118 transitions, 248 flow [2023-08-31 04:21:05,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 118 transitions, 248 flow [2023-08-31 04:21:05,054 INFO L130 PetriNetUnfolder]: 8/118 cut-off events. [2023-08-31 04:21:05,054 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:21:05,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 8/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-08-31 04:21:05,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 1922 [2023-08-31 04:21:09,909 INFO L134 LiptonReduction]: Checked pairs total: 4363 [2023-08-31 04:21:09,910 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-31 04:21:09,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 04:21:09,927 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@209499d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 04:21:09,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 04:21:09,936 INFO L130 PetriNetUnfolder]: 5/29 cut-off events. [2023-08-31 04:21:09,937 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:21:09,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:09,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:21:09,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:09,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash -616360160, now seen corresponding path program 1 times [2023-08-31 04:21:09,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:09,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607829023] [2023-08-31 04:21:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:21:10,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:21:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607829023] [2023-08-31 04:21:10,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607829023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:21:10,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:21:10,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 04:21:10,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759153056] [2023-08-31 04:21:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:21:10,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:21:10,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:10,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:21:10,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:21:10,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 224 [2023-08-31 04:21:10,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 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) [2023-08-31 04:21:10,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:10,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 224 [2023-08-31 04:21:10,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:10,474 INFO L130 PetriNetUnfolder]: 219/470 cut-off events. [2023-08-31 04:21:10,475 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-31 04:21:10,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 470 events. 219/470 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2196 event pairs, 87 based on Foata normal form. 28/432 useless extension candidates. Maximal degree in co-relation 772. Up to 225 conditions per place. [2023-08-31 04:21:10,479 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 34 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-31 04:21:10,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 173 flow [2023-08-31 04:21:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:21:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:21:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-31 04:21:10,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2023-08-31 04:21:10,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-31 04:21:10,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-31 04:21:10,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:21:10,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-31 04:21:10,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-08-31 04:21:10,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-08-31 04:21:10,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-08-31 04:21:10,508 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 72 flow. Second operand 3 states and 390 transitions. [2023-08-31 04:21:10,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 173 flow [2023-08-31 04:21:10,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 163 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 04:21:10,512 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 74 flow [2023-08-31 04:21:10,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-08-31 04:21:10,516 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-08-31 04:21:10,516 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 74 flow [2023-08-31 04:21:10,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 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) [2023-08-31 04:21:10,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:10,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:21:10,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 04:21:10,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:10,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:10,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2115918277, now seen corresponding path program 1 times [2023-08-31 04:21:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:10,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71741802] [2023-08-31 04:21:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:21:10,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:21:10,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71741802] [2023-08-31 04:21:10,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71741802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:21:10,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:21:10,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 04:21:10,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432017265] [2023-08-31 04:21:10,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:21:10,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:21:10,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:10,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:21:10,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:21:10,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 224 [2023-08-31 04:21:10,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2023-08-31 04:21:10,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:10,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 224 [2023-08-31 04:21:10,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:10,767 INFO L130 PetriNetUnfolder]: 357/694 cut-off events. [2023-08-31 04:21:10,768 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2023-08-31 04:21:10,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 694 events. 357/694 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3192 event pairs, 141 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 442. Up to 347 conditions per place. [2023-08-31 04:21:10,773 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 36 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-31 04:21:10,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 191 flow [2023-08-31 04:21:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:21:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:21:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-08-31 04:21:10,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773809523809523 [2023-08-31 04:21:10,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-08-31 04:21:10,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-08-31 04:21:10,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:21:10,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-08-31 04:21:10,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 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) [2023-08-31 04:21:10,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-08-31 04:21:10,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-08-31 04:21:10,781 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 74 flow. Second operand 3 states and 388 transitions. [2023-08-31 04:21:10,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 191 flow [2023-08-31 04:21:10,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 04:21:10,782 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2023-08-31 04:21:10,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-31 04:21:10,783 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-08-31 04:21:10,784 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2023-08-31 04:21:10,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2023-08-31 04:21:10,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:10,784 INFO L208 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] [2023-08-31 04:21:10,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 04:21:10,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:10,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:10,785 INFO L85 PathProgramCache]: Analyzing trace with hash 26892520, now seen corresponding path program 1 times [2023-08-31 04:21:10,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:10,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245602909] [2023-08-31 04:21:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:10,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:21:10,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:21:10,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245602909] [2023-08-31 04:21:10,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245602909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:21:10,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:21:10,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 04:21:10,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449255003] [2023-08-31 04:21:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:21:10,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:21:10,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:21:10,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:21:10,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 224 [2023-08-31 04:21:10,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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) [2023-08-31 04:21:10,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:10,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 224 [2023-08-31 04:21:10,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:11,040 INFO L130 PetriNetUnfolder]: 309/688 cut-off events. [2023-08-31 04:21:11,041 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 04:21:11,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 688 events. 309/688 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3367 event pairs, 105 based on Foata normal form. 80/740 useless extension candidates. Maximal degree in co-relation 413. Up to 316 conditions per place. [2023-08-31 04:21:11,044 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 25 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-08-31 04:21:11,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 183 flow [2023-08-31 04:21:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:21:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:21:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-08-31 04:21:11,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2023-08-31 04:21:11,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-08-31 04:21:11,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-08-31 04:21:11,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:21:11,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-08-31 04:21:11,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2023-08-31 04:21:11,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-08-31 04:21:11,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-08-31 04:21:11,050 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 3 states and 370 transitions. [2023-08-31 04:21:11,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 183 flow [2023-08-31 04:21:11,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 04:21:11,052 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 102 flow [2023-08-31 04:21:11,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-08-31 04:21:11,053 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-31 04:21:11,053 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 102 flow [2023-08-31 04:21:11,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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) [2023-08-31 04:21:11,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:11,054 INFO L208 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] [2023-08-31 04:21:11,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 04:21:11,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:11,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:11,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1826989588, now seen corresponding path program 2 times [2023-08-31 04:21:11,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:11,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974428006] [2023-08-31 04:21:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:21:11,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:21:11,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974428006] [2023-08-31 04:21:11,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974428006] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:21:11,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081208240] [2023-08-31 04:21:11,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 04:21:11,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:11,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:21:11,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:21:11,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 04:21:11,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 04:21:11,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:21:11,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 04:21:11,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:21:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:21:11,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:21:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:21:11,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081208240] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:21:11,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:21:11,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-31 04:21:11,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550575259] [2023-08-31 04:21:11,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:21:11,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 04:21:11,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:11,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 04:21:11,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 04:21:11,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 224 [2023-08-31 04:21:11,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 117.71428571428571) internal successors, (824), 7 states have internal predecessors, (824), 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) [2023-08-31 04:21:11,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:11,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 224 [2023-08-31 04:21:11,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:11,711 INFO L130 PetriNetUnfolder]: 509/1236 cut-off events. [2023-08-31 04:21:11,711 INFO L131 PetriNetUnfolder]: For 350/356 co-relation queries the response was YES. [2023-08-31 04:21:11,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 1236 events. 509/1236 cut-off events. For 350/356 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6749 event pairs, 42 based on Foata normal form. 96/1274 useless extension candidates. Maximal degree in co-relation 673. Up to 246 conditions per place. [2023-08-31 04:21:11,720 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 113 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2023-08-31 04:21:11,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 147 transitions, 789 flow [2023-08-31 04:21:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 04:21:11,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 04:21:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1606 transitions. [2023-08-31 04:21:11,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551510989010989 [2023-08-31 04:21:11,725 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1606 transitions. [2023-08-31 04:21:11,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1606 transitions. [2023-08-31 04:21:11,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:21:11,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1606 transitions. [2023-08-31 04:21:11,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.53846153846153) internal successors, (1606), 13 states have internal predecessors, (1606), 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) [2023-08-31 04:21:11,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 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) [2023-08-31 04:21:11,737 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 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) [2023-08-31 04:21:11,737 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 102 flow. Second operand 13 states and 1606 transitions. [2023-08-31 04:21:11,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 147 transitions, 789 flow [2023-08-31 04:21:11,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 147 transitions, 721 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 04:21:11,746 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 325 flow [2023-08-31 04:21:11,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=325, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-31 04:21:11,747 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2023-08-31 04:21:11,747 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 325 flow [2023-08-31 04:21:11,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.71428571428571) internal successors, (824), 7 states have internal predecessors, (824), 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) [2023-08-31 04:21:11,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:11,749 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:21:11,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 04:21:11,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:11,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:11,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:11,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1311970565, now seen corresponding path program 3 times [2023-08-31 04:21:11,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:11,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068092223] [2023-08-31 04:21:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:11,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-31 04:21:12,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:21:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068092223] [2023-08-31 04:21:12,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068092223] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:21:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012507547] [2023-08-31 04:21:12,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 04:21:12,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:12,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:21:12,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:21:12,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 04:21:12,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-31 04:21:12,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:21:12,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 04:21:12,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:21:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-31 04:21:12,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 04:21:12,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012507547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:21:12,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 04:21:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-31 04:21:12,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822884167] [2023-08-31 04:21:12,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:21:12,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 04:21:12,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 04:21:12,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 04:21:12,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 224 [2023-08-31 04:21:12,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 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) [2023-08-31 04:21:12,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:12,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 224 [2023-08-31 04:21:12,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:12,610 INFO L130 PetriNetUnfolder]: 738/1551 cut-off events. [2023-08-31 04:21:12,610 INFO L131 PetriNetUnfolder]: For 2861/2861 co-relation queries the response was YES. [2023-08-31 04:21:12,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4427 conditions, 1551 events. 738/1551 cut-off events. For 2861/2861 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7834 event pairs, 143 based on Foata normal form. 0/1435 useless extension candidates. Maximal degree in co-relation 3198. Up to 591 conditions per place. [2023-08-31 04:21:12,620 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 88 selfloop transitions, 8 changer transitions 1/100 dead transitions. [2023-08-31 04:21:12,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 100 transitions, 773 flow [2023-08-31 04:21:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 04:21:12,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 04:21:12,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 618 transitions. [2023-08-31 04:21:12,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517857142857143 [2023-08-31 04:21:12,624 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 618 transitions. [2023-08-31 04:21:12,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 618 transitions. [2023-08-31 04:21:12,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:21:12,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 618 transitions. [2023-08-31 04:21:12,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 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) [2023-08-31 04:21:12,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 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) [2023-08-31 04:21:12,632 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 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) [2023-08-31 04:21:12,632 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 325 flow. Second operand 5 states and 618 transitions. [2023-08-31 04:21:12,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 100 transitions, 773 flow [2023-08-31 04:21:12,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 100 transitions, 721 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-31 04:21:12,643 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 345 flow [2023-08-31 04:21:12,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-31 04:21:12,646 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-08-31 04:21:12,646 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 345 flow [2023-08-31 04:21:12,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 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) [2023-08-31 04:21:12,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:12,647 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:21:12,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 04:21:12,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:12,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:12,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:12,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1361604361, now seen corresponding path program 4 times [2023-08-31 04:21:12,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:12,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743603247] [2023-08-31 04:21:12,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:12,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 04:21:12,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:21:12,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743603247] [2023-08-31 04:21:12,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743603247] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:21:12,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140292007] [2023-08-31 04:21:12,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 04:21:12,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:12,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:21:12,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:21:13,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 04:21:13,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 04:21:13,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:21:13,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 04:21:13,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:21:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 04:21:13,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:21:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 04:21:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140292007] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:21:13,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:21:13,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-08-31 04:21:13,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397540400] [2023-08-31 04:21:13,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:21:13,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 04:21:13,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 04:21:13,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 04:21:13,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 224 [2023-08-31 04:21:13,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 121.66666666666667) internal successors, (730), 6 states have internal predecessors, (730), 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) [2023-08-31 04:21:13,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:13,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 224 [2023-08-31 04:21:13,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:13,460 INFO L130 PetriNetUnfolder]: 639/1480 cut-off events. [2023-08-31 04:21:13,460 INFO L131 PetriNetUnfolder]: For 3086/3104 co-relation queries the response was YES. [2023-08-31 04:21:13,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 1480 events. 639/1480 cut-off events. For 3086/3104 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7912 event pairs, 118 based on Foata normal form. 46/1518 useless extension candidates. Maximal degree in co-relation 3476. Up to 310 conditions per place. [2023-08-31 04:21:13,471 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 75 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2023-08-31 04:21:13,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 737 flow [2023-08-31 04:21:13,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 04:21:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 04:21:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2023-08-31 04:21:13,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705357142857143 [2023-08-31 04:21:13,474 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2023-08-31 04:21:13,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2023-08-31 04:21:13,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:21:13,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2023-08-31 04:21:13,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 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) [2023-08-31 04:21:13,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 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) [2023-08-31 04:21:13,479 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 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) [2023-08-31 04:21:13,479 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 345 flow. Second operand 5 states and 639 transitions. [2023-08-31 04:21:13,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 737 flow [2023-08-31 04:21:13,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 737 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 04:21:13,488 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 389 flow [2023-08-31 04:21:13,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-31 04:21:13,488 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-08-31 04:21:13,489 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 389 flow [2023-08-31 04:21:13,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.66666666666667) internal successors, (730), 6 states have internal predecessors, (730), 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) [2023-08-31 04:21:13,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:13,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:21:13,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 04:21:13,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:13,697 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:13,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1041839656, now seen corresponding path program 5 times [2023-08-31 04:21:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:13,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344399908] [2023-08-31 04:21:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-31 04:21:13,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:21:13,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344399908] [2023-08-31 04:21:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344399908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:21:13,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:21:13,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 04:21:13,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847271650] [2023-08-31 04:21:13,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:21:13,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:21:13,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:13,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:21:13,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:21:13,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 224 [2023-08-31 04:21:13,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 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) [2023-08-31 04:21:13,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:13,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 224 [2023-08-31 04:21:13,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:13,907 INFO L130 PetriNetUnfolder]: 443/996 cut-off events. [2023-08-31 04:21:13,907 INFO L131 PetriNetUnfolder]: For 2516/2525 co-relation queries the response was YES. [2023-08-31 04:21:13,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 996 events. 443/996 cut-off events. For 2516/2525 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4688 event pairs, 118 based on Foata normal form. 47/1036 useless extension candidates. Maximal degree in co-relation 2922. Up to 664 conditions per place. [2023-08-31 04:21:13,914 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 49 selfloop transitions, 3 changer transitions 3/61 dead transitions. [2023-08-31 04:21:13,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 471 flow [2023-08-31 04:21:13,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:21:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:21:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-08-31 04:21:13,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669642857142857 [2023-08-31 04:21:13,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-08-31 04:21:13,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-08-31 04:21:13,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:21:13,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-08-31 04:21:13,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2023-08-31 04:21:13,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-08-31 04:21:13,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-08-31 04:21:13,919 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 389 flow. Second operand 3 states and 381 transitions. [2023-08-31 04:21:13,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 471 flow [2023-08-31 04:21:13,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 448 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-31 04:21:13,926 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 288 flow [2023-08-31 04:21:13,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-08-31 04:21:13,927 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2023-08-31 04:21:13,927 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 288 flow [2023-08-31 04:21:13,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 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) [2023-08-31 04:21:13,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:13,928 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:21:13,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 04:21:13,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:13,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash -872931202, now seen corresponding path program 6 times [2023-08-31 04:21:13,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:13,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471644306] [2023-08-31 04:21:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:13,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-31 04:21:14,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:21:14,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471644306] [2023-08-31 04:21:14,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471644306] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:21:14,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85991604] [2023-08-31 04:21:14,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 04:21:14,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:14,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:21:14,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:21:14,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 04:21:14,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-31 04:21:14,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:21:14,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 04:21:14,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:21:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-31 04:21:14,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 04:21:14,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85991604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:21:14,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 04:21:14,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2023-08-31 04:21:14,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177335265] [2023-08-31 04:21:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:21:14,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 04:21:14,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 04:21:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-31 04:21:14,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-08-31 04:21:14,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 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) [2023-08-31 04:21:14,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:14,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-08-31 04:21:14,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:14,572 INFO L130 PetriNetUnfolder]: 472/1003 cut-off events. [2023-08-31 04:21:14,572 INFO L131 PetriNetUnfolder]: For 1814/1814 co-relation queries the response was YES. [2023-08-31 04:21:14,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 1003 events. 472/1003 cut-off events. For 1814/1814 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4334 event pairs, 123 based on Foata normal form. 18/1021 useless extension candidates. Maximal degree in co-relation 1477. Up to 429 conditions per place. [2023-08-31 04:21:14,579 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 65 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2023-08-31 04:21:14,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 580 flow [2023-08-31 04:21:14,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 04:21:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 04:21:14,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2023-08-31 04:21:14,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2023-08-31 04:21:14,582 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2023-08-31 04:21:14,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2023-08-31 04:21:14,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:21:14,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2023-08-31 04:21:14,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2023-08-31 04:21:14,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 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) [2023-08-31 04:21:14,587 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 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) [2023-08-31 04:21:14,588 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 288 flow. Second operand 6 states and 708 transitions. [2023-08-31 04:21:14,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 580 flow [2023-08-31 04:21:14,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 04:21:14,594 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 332 flow [2023-08-31 04:21:14,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-08-31 04:21:14,595 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-08-31 04:21:14,595 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 332 flow [2023-08-31 04:21:14,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 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) [2023-08-31 04:21:14,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:14,596 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:21:14,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 04:21:14,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:14,802 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:14,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:14,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2055301186, now seen corresponding path program 7 times [2023-08-31 04:21:14,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:14,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289072296] [2023-08-31 04:21:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:14,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-31 04:21:15,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:21:15,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289072296] [2023-08-31 04:21:15,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289072296] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:21:15,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131247633] [2023-08-31 04:21:15,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 04:21:15,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:15,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:21:15,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:21:15,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 04:21:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:21:15,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-31 04:21:15,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:21:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-31 04:21:15,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:21:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-31 04:21:15,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131247633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:21:15,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:21:15,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-31 04:21:15,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951758597] [2023-08-31 04:21:15,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:21:15,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 04:21:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 04:21:15,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 04:21:15,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-08-31 04:21:15,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 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) [2023-08-31 04:21:15,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:15,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-08-31 04:21:15,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:15,500 INFO L130 PetriNetUnfolder]: 325/706 cut-off events. [2023-08-31 04:21:15,500 INFO L131 PetriNetUnfolder]: For 1613/1613 co-relation queries the response was YES. [2023-08-31 04:21:15,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 706 events. 325/706 cut-off events. For 1613/1613 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2564 event pairs, 90 based on Foata normal form. 22/728 useless extension candidates. Maximal degree in co-relation 1227. Up to 300 conditions per place. [2023-08-31 04:21:15,506 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 59 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2023-08-31 04:21:15,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 534 flow [2023-08-31 04:21:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 04:21:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 04:21:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 706 transitions. [2023-08-31 04:21:15,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252976190476191 [2023-08-31 04:21:15,508 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 706 transitions. [2023-08-31 04:21:15,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 706 transitions. [2023-08-31 04:21:15,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:21:15,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 706 transitions. [2023-08-31 04:21:15,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 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) [2023-08-31 04:21:15,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 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) [2023-08-31 04:21:15,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 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) [2023-08-31 04:21:15,514 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 332 flow. Second operand 6 states and 706 transitions. [2023-08-31 04:21:15,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 534 flow [2023-08-31 04:21:15,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 500 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-31 04:21:15,519 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 265 flow [2023-08-31 04:21:15,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2023-08-31 04:21:15,520 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-08-31 04:21:15,520 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 265 flow [2023-08-31 04:21:15,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 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) [2023-08-31 04:21:15,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:21:15,521 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:21:15,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 04:21:15,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:21:15,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:21:15,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:21:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1629587720, now seen corresponding path program 8 times [2023-08-31 04:21:15,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:21:15,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104501642] [2023-08-31 04:21:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:21:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:21:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 04:21:15,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 04:21:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 04:21:15,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 04:21:15,808 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 04:21:15,808 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-31 04:21:15,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 04:21:15,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 04:21:15,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 04:21:15,811 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2023-08-31 04:21:15,814 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 04:21:15,814 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 04:21:15,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 04:21:15 BasicIcfg [2023-08-31 04:21:15,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 04:21:15,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 04:21:15,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 04:21:15,873 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 04:21:15,874 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:21:04" (3/4) ... [2023-08-31 04:21:15,876 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-31 04:21:15,940 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 04:21:15,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 04:21:15,941 INFO L158 Benchmark]: Toolchain (without parser) took 12194.28ms. Allocated memory was 79.7MB in the beginning and 176.2MB in the end (delta: 96.5MB). Free memory was 56.1MB in the beginning and 116.4MB in the end (delta: -60.3MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2023-08-31 04:21:15,941 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 04:21:15,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 516.69ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 47.5MB in the end (delta: 8.5MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-08-31 04:21:15,942 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.64ms. Allocated memory is still 79.7MB. Free memory was 47.5MB in the beginning and 45.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 04:21:15,942 INFO L158 Benchmark]: Boogie Preprocessor took 43.71ms. Allocated memory is still 79.7MB. Free memory was 45.3MB in the beginning and 43.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 04:21:15,942 INFO L158 Benchmark]: RCFGBuilder took 431.02ms. Allocated memory is still 79.7MB. Free memory was 43.6MB in the beginning and 53.2MB in the end (delta: -9.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2023-08-31 04:21:15,942 INFO L158 Benchmark]: TraceAbstraction took 11087.10ms. Allocated memory was 79.7MB in the beginning and 176.2MB in the end (delta: 96.5MB). Free memory was 52.3MB in the beginning and 126.9MB in the end (delta: -74.6MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-08-31 04:21:15,943 INFO L158 Benchmark]: Witness Printer took 67.21ms. Allocated memory is still 176.2MB. Free memory was 126.9MB in the beginning and 116.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-31 04:21:15,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 516.69ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 47.5MB in the end (delta: 8.5MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.64ms. Allocated memory is still 79.7MB. Free memory was 47.5MB in the beginning and 45.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.71ms. Allocated memory is still 79.7MB. Free memory was 45.3MB in the beginning and 43.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.02ms. Allocated memory is still 79.7MB. Free memory was 43.6MB in the beginning and 53.2MB in the end (delta: -9.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11087.10ms. Allocated memory was 79.7MB in the beginning and 176.2MB in the end (delta: 96.5MB). Free memory was 52.3MB in the beginning and 126.9MB in the end (delta: -74.6MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Witness Printer took 67.21ms. Allocated memory is still 176.2MB. Free memory was 126.9MB in the beginning and 116.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 117 PlacesBefore, 32 PlacesAfterwards, 118 TransitionsBefore, 30 TransitionsAfterwards, 1922 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4363 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2172, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1031, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2172, independent: 1000, independent conditional: 0, independent unconditional: 1000, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 1031, unknown conditional: 0, unknown unconditional: 1031] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={7:0}, t2={6:0}, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: 914]: 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: 913]: 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 5 procedures, 167 locations, 3 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: 10.9s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 477 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 369 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1184 IncrementalHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 24 mSDtfsCounter, 1184 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 287 SyntacticMatches, 15 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=6, InterpolantAutomatonStates: 47, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 510 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 1264 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1392 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 273/350 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! [2023-08-31 04:21:15,962 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