./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:41:36,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:41:36,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:41:36,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:41:36,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:41:36,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:41:36,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:41:36,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:41:36,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:41:36,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:41:36,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:41:36,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:41:36,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:41:36,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:41:36,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:41:36,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:41:36,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:41:36,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:41:36,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:41:36,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:41:36,830 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:41:36,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:41:36,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:41:36,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:41:36,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:41:36,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:41:36,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:41:36,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:41:36,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:41:36,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:41:36,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:41:36,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:41:36,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:41:36,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:41:36,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:41:36,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:41:36,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:41:36,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:41:36,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:41:36,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:41:36,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:41:36,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:41:36,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:41:36,873 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:41:36,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:41:36,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:41:36,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:41:36,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:41:36,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:41:36,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:41:36,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:41:36,876 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:41:36,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:41:36,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:41:36,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:41:36,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:41:36,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:41:36,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:41:36,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:41:36,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:41:36,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:41:36,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:41:36,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:41:36,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:41:36,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:41:36,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:41:36,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:41:36,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:41:36,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:41:36,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:41:36,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:41:36,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:41:36,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:41:36,881 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:41:36,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:41:36,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:41:36,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-07-22 21:41:37,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:41:37,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:41:37,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:41:37,062 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:41:37,062 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:41:37,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-07-22 21:41:37,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0ab470ff/fe88fcc94f8843ebae85a0f98e0905d8/FLAG3c59e9fb7 [2022-07-22 21:41:37,505 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:41:37,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-07-22 21:41:37,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0ab470ff/fe88fcc94f8843ebae85a0f98e0905d8/FLAG3c59e9fb7 [2022-07-22 21:41:37,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0ab470ff/fe88fcc94f8843ebae85a0f98e0905d8 [2022-07-22 21:41:37,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:41:37,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:41:37,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:41:37,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:41:37,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:41:37,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343a5ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37, skipping insertion in model container [2022-07-22 21:41:37,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:41:37,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:41:37,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-07-22 21:41:37,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:41:37,730 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:41:37,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-07-22 21:41:37,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:41:37,768 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:41:37,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37 WrapperNode [2022-07-22 21:41:37,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:41:37,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:41:37,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:41:37,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:41:37,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,816 INFO L137 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 314 [2022-07-22 21:41:37,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:41:37,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:41:37,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:41:37,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:41:37,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:41:37,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:41:37,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:41:37,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:41:37,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (1/1) ... [2022-07-22 21:41:37,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:41:37,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:41:37,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:41:37,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:41:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:41:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:41:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:41:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:41:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:41:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:41:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:41:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:41:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:41:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:41:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:41:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:41:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:41:37,950 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:41:38,013 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:41:38,014 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:41:38,390 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:41:38,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:41:38,401 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 21:41:38,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:41:38 BoogieIcfgContainer [2022-07-22 21:41:38,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:41:38,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:41:38,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:41:38,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:41:38,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:41:37" (1/3) ... [2022-07-22 21:41:38,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114252c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:41:38, skipping insertion in model container [2022-07-22 21:41:38,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:37" (2/3) ... [2022-07-22 21:41:38,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114252c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:41:38, skipping insertion in model container [2022-07-22 21:41:38,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:41:38" (3/3) ... [2022-07-22 21:41:38,409 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-07-22 21:41:38,413 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:41:38,420 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:41:38,420 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:41:38,420 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:41:38,505 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:41:38,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 385 places, 414 transitions, 844 flow [2022-07-22 21:41:38,681 INFO L129 PetriNetUnfolder]: 36/412 cut-off events. [2022-07-22 21:41:38,681 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:41:38,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 412 events. 36/412 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 475 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-07-22 21:41:38,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 414 transitions, 844 flow [2022-07-22 21:41:38,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 403 transitions, 818 flow [2022-07-22 21:41:38,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:41:38,711 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ae764ac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@769ad16a [2022-07-22 21:41:38,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:41:38,784 INFO L129 PetriNetUnfolder]: 36/402 cut-off events. [2022-07-22 21:41:38,784 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:41:38,784 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:38,785 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:38,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:38,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:38,793 INFO L85 PathProgramCache]: Analyzing trace with hash -339291306, now seen corresponding path program 1 times [2022-07-22 21:41:38,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:38,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576867074] [2022-07-22 21:41:38,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:38,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:39,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:39,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576867074] [2022-07-22 21:41:39,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576867074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:39,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:39,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:41:39,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866527031] [2022-07-22 21:41:39,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:39,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:41:39,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:39,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:41:39,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:41:39,104 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 414 [2022-07-22 21:41:39,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 403 transitions, 818 flow. Second operand has 2 states, 2 states have (on average 391.5) internal successors, (783), 2 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:39,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 414 [2022-07-22 21:41:39,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:39,180 INFO L129 PetriNetUnfolder]: 16/383 cut-off events. [2022-07-22 21:41:39,181 INFO L130 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-07-22 21:41:39,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 383 events. 16/383 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 463 event pairs, 0 based on Foata normal form. 21/372 useless extension candidates. Maximal degree in co-relation 287. Up to 5 conditions per place. [2022-07-22 21:41:39,188 INFO L132 encePairwiseOnDemand]: 394/414 looper letters, 4 selfloop transitions, 0 changer transitions 12/383 dead transitions. [2022-07-22 21:41:39,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 383 transitions, 786 flow [2022-07-22 21:41:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:41:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:41:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 802 transitions. [2022-07-22 21:41:39,204 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9685990338164251 [2022-07-22 21:41:39,204 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 802 transitions. [2022-07-22 21:41:39,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 802 transitions. [2022-07-22 21:41:39,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:39,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 802 transitions. [2022-07-22 21:41:39,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 401.0) internal successors, (802), 2 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,224 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,226 INFO L186 Difference]: Start difference. First operand has 374 places, 403 transitions, 818 flow. Second operand 2 states and 802 transitions. [2022-07-22 21:41:39,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 383 transitions, 786 flow [2022-07-22 21:41:39,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 383 transitions, 778 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:41:39,240 INFO L242 Difference]: Finished difference. Result has 371 places, 371 transitions, 746 flow [2022-07-22 21:41:39,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=746, PETRI_PLACES=371, PETRI_TRANSITIONS=371} [2022-07-22 21:41:39,246 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, -3 predicate places. [2022-07-22 21:41:39,247 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 371 transitions, 746 flow [2022-07-22 21:41:39,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 391.5) internal successors, (783), 2 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,247 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:39,248 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:39,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:41:39,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2041905993, now seen corresponding path program 1 times [2022-07-22 21:41:39,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:39,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508345949] [2022-07-22 21:41:39,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:39,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:39,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:39,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508345949] [2022-07-22 21:41:39,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508345949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:39,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:39,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:41:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830142884] [2022-07-22 21:41:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:41:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:41:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:41:39,445 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 414 [2022-07-22 21:41:39,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 371 transitions, 746 flow. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:39,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 414 [2022-07-22 21:41:39,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:39,524 INFO L129 PetriNetUnfolder]: 31/508 cut-off events. [2022-07-22 21:41:39,524 INFO L130 PetriNetUnfolder]: For 2/9 co-relation queries the response was YES. [2022-07-22 21:41:39,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 508 events. 31/508 cut-off events. For 2/9 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1309 event pairs, 5 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 546. Up to 22 conditions per place. [2022-07-22 21:41:39,527 INFO L132 encePairwiseOnDemand]: 410/414 looper letters, 11 selfloop transitions, 3 changer transitions 0/374 dead transitions. [2022-07-22 21:41:39,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 374 transitions, 781 flow [2022-07-22 21:41:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:41:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:41:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2022-07-22 21:41:39,530 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2022-07-22 21:41:39,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2022-07-22 21:41:39,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2022-07-22 21:41:39,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:39,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2022-07-22 21:41:39,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,536 INFO L186 Difference]: Start difference. First operand has 371 places, 371 transitions, 746 flow. Second operand 3 states and 1161 transitions. [2022-07-22 21:41:39,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 374 transitions, 781 flow [2022-07-22 21:41:39,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 374 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:41:39,543 INFO L242 Difference]: Finished difference. Result has 363 places, 373 transitions, 768 flow [2022-07-22 21:41:39,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=363, PETRI_TRANSITIONS=373} [2022-07-22 21:41:39,544 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, -11 predicate places. [2022-07-22 21:41:39,545 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 373 transitions, 768 flow [2022-07-22 21:41:39,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,545 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:39,546 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:39,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:41:39,546 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:39,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash -520802165, now seen corresponding path program 1 times [2022-07-22 21:41:39,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:39,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134122229] [2022-07-22 21:41:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:39,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:39,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:39,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134122229] [2022-07-22 21:41:39,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134122229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:39,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:39,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:41:39,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219831250] [2022-07-22 21:41:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:39,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:41:39,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:41:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:41:39,681 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 414 [2022-07-22 21:41:39,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 373 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:39,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 414 [2022-07-22 21:41:39,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:39,741 INFO L129 PetriNetUnfolder]: 27/448 cut-off events. [2022-07-22 21:41:39,741 INFO L130 PetriNetUnfolder]: For 12/13 co-relation queries the response was YES. [2022-07-22 21:41:39,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 448 events. 27/448 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 795 event pairs, 5 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 488. Up to 22 conditions per place. [2022-07-22 21:41:39,744 INFO L132 encePairwiseOnDemand]: 410/414 looper letters, 11 selfloop transitions, 3 changer transitions 0/376 dead transitions. [2022-07-22 21:41:39,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 376 transitions, 803 flow [2022-07-22 21:41:39,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:41:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:41:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2022-07-22 21:41:39,746 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2022-07-22 21:41:39,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2022-07-22 21:41:39,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2022-07-22 21:41:39,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:39,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2022-07-22 21:41:39,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,752 INFO L186 Difference]: Start difference. First operand has 363 places, 373 transitions, 768 flow. Second operand 3 states and 1161 transitions. [2022-07-22 21:41:39,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 376 transitions, 803 flow [2022-07-22 21:41:39,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 376 transitions, 797 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:39,758 INFO L242 Difference]: Finished difference. Result has 365 places, 375 transitions, 784 flow [2022-07-22 21:41:39,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=784, PETRI_PLACES=365, PETRI_TRANSITIONS=375} [2022-07-22 21:41:39,761 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, -9 predicate places. [2022-07-22 21:41:39,761 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 375 transitions, 784 flow [2022-07-22 21:41:39,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,762 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:39,762 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:39,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:41:39,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1693829105, now seen corresponding path program 1 times [2022-07-22 21:41:39,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:39,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179999514] [2022-07-22 21:41:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:39,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:39,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:39,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179999514] [2022-07-22 21:41:39,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179999514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:39,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:39,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:41:39,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983408760] [2022-07-22 21:41:39,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:39,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:41:39,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:39,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:41:39,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:41:39,993 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:41:39,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 375 transitions, 784 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:39,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:41:39,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:41,613 INFO L129 PetriNetUnfolder]: 1682/8987 cut-off events. [2022-07-22 21:41:41,613 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-07-22 21:41:41,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12174 conditions, 8987 events. 1682/8987 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 102322 event pairs, 501 based on Foata normal form. 0/8427 useless extension candidates. Maximal degree in co-relation 12168. Up to 1102 conditions per place. [2022-07-22 21:41:41,655 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 242 selfloop transitions, 35 changer transitions 0/587 dead transitions. [2022-07-22 21:41:41,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 587 transitions, 1786 flow [2022-07-22 21:41:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 21:41:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-22 21:41:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7823 transitions. [2022-07-22 21:41:41,667 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8215710985087167 [2022-07-22 21:41:41,667 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7823 transitions. [2022-07-22 21:41:41,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7823 transitions. [2022-07-22 21:41:41,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:41,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7823 transitions. [2022-07-22 21:41:41,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 340.1304347826087) internal successors, (7823), 23 states have internal predecessors, (7823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,696 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,697 INFO L186 Difference]: Start difference. First operand has 365 places, 375 transitions, 784 flow. Second operand 23 states and 7823 transitions. [2022-07-22 21:41:41,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 587 transitions, 1786 flow [2022-07-22 21:41:41,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 587 transitions, 1780 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:41,712 INFO L242 Difference]: Finished difference. Result has 404 places, 409 transitions, 1017 flow [2022-07-22 21:41:41,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1017, PETRI_PLACES=404, PETRI_TRANSITIONS=409} [2022-07-22 21:41:41,713 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 30 predicate places. [2022-07-22 21:41:41,713 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 409 transitions, 1017 flow [2022-07-22 21:41:41,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,715 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:41,715 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:41,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:41:41,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:41,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1184864045, now seen corresponding path program 2 times [2022-07-22 21:41:41,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:41,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169906063] [2022-07-22 21:41:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:41,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:41,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:41,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169906063] [2022-07-22 21:41:41,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169906063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:41,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:41,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:41:41,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401129339] [2022-07-22 21:41:41,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:41,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:41:41,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:41,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:41:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:41:41,864 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:41:41,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 409 transitions, 1017 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:41,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:41:41,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:44,153 INFO L129 PetriNetUnfolder]: 2176/12986 cut-off events. [2022-07-22 21:41:44,154 INFO L130 PetriNetUnfolder]: For 1873/1911 co-relation queries the response was YES. [2022-07-22 21:41:44,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19172 conditions, 12986 events. 2176/12986 cut-off events. For 1873/1911 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 162632 event pairs, 108 based on Foata normal form. 4/12456 useless extension candidates. Maximal degree in co-relation 19147. Up to 1325 conditions per place. [2022-07-22 21:41:44,297 INFO L132 encePairwiseOnDemand]: 398/414 looper letters, 349 selfloop transitions, 48 changer transitions 0/707 dead transitions. [2022-07-22 21:41:44,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 707 transitions, 2917 flow [2022-07-22 21:41:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 21:41:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-22 21:41:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9502 transitions. [2022-07-22 21:41:44,310 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8197032436162871 [2022-07-22 21:41:44,310 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9502 transitions. [2022-07-22 21:41:44,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9502 transitions. [2022-07-22 21:41:44,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:44,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9502 transitions. [2022-07-22 21:41:44,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 339.35714285714283) internal successors, (9502), 28 states have internal predecessors, (9502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:44,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:44,339 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:44,340 INFO L186 Difference]: Start difference. First operand has 404 places, 409 transitions, 1017 flow. Second operand 28 states and 9502 transitions. [2022-07-22 21:41:44,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 707 transitions, 2917 flow [2022-07-22 21:41:44,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 707 transitions, 2917 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:41:44,359 INFO L242 Difference]: Finished difference. Result has 444 places, 444 transitions, 1340 flow [2022-07-22 21:41:44,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1340, PETRI_PLACES=444, PETRI_TRANSITIONS=444} [2022-07-22 21:41:44,361 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 70 predicate places. [2022-07-22 21:41:44,361 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 444 transitions, 1340 flow [2022-07-22 21:41:44,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:44,362 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:44,362 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:44,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:41:44,363 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:44,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:44,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1960908911, now seen corresponding path program 3 times [2022-07-22 21:41:44,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:44,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611957483] [2022-07-22 21:41:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:44,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:44,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:44,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611957483] [2022-07-22 21:41:44,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611957483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:44,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:44,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:41:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93931947] [2022-07-22 21:41:44,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:44,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:41:44,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:44,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:41:44,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:41:44,485 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:41:44,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 444 transitions, 1340 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:44,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:44,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:41:44,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:47,415 INFO L129 PetriNetUnfolder]: 2824/17575 cut-off events. [2022-07-22 21:41:47,418 INFO L130 PetriNetUnfolder]: For 5957/6049 co-relation queries the response was YES. [2022-07-22 21:41:47,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27435 conditions, 17575 events. 2824/17575 cut-off events. For 5957/6049 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 236043 event pairs, 513 based on Foata normal form. 38/16965 useless extension candidates. Maximal degree in co-relation 27396. Up to 1334 conditions per place. [2022-07-22 21:41:47,580 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 345 selfloop transitions, 67 changer transitions 0/722 dead transitions. [2022-07-22 21:41:47,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 722 transitions, 3291 flow [2022-07-22 21:41:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 21:41:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-22 21:41:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9526 transitions. [2022-07-22 21:41:47,593 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8217736369910283 [2022-07-22 21:41:47,593 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9526 transitions. [2022-07-22 21:41:47,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9526 transitions. [2022-07-22 21:41:47,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:47,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9526 transitions. [2022-07-22 21:41:47,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 340.2142857142857) internal successors, (9526), 28 states have internal predecessors, (9526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:47,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:47,622 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:47,622 INFO L186 Difference]: Start difference. First operand has 444 places, 444 transitions, 1340 flow. Second operand 28 states and 9526 transitions. [2022-07-22 21:41:47,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 722 transitions, 3291 flow [2022-07-22 21:41:47,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 722 transitions, 3099 flow, removed 24 selfloop flow, removed 5 redundant places. [2022-07-22 21:41:47,657 INFO L242 Difference]: Finished difference. Result has 479 places, 469 transitions, 1652 flow [2022-07-22 21:41:47,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1652, PETRI_PLACES=479, PETRI_TRANSITIONS=469} [2022-07-22 21:41:47,659 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 105 predicate places. [2022-07-22 21:41:47,660 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 469 transitions, 1652 flow [2022-07-22 21:41:47,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:47,661 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:47,661 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:47,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:41:47,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:47,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:47,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1476650141, now seen corresponding path program 4 times [2022-07-22 21:41:47,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:47,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126133815] [2022-07-22 21:41:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:47,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:47,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:47,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126133815] [2022-07-22 21:41:47,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126133815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:47,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:47,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:41:47,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329743818] [2022-07-22 21:41:47,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:47,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:41:47,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:41:47,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:41:47,792 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:41:47,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 469 transitions, 1652 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:47,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:47,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:41:47,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:50,720 INFO L129 PetriNetUnfolder]: 2928/17954 cut-off events. [2022-07-22 21:41:50,720 INFO L130 PetriNetUnfolder]: For 11176/11310 co-relation queries the response was YES. [2022-07-22 21:41:50,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29599 conditions, 17954 events. 2928/17954 cut-off events. For 11176/11310 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 240616 event pairs, 313 based on Foata normal form. 15/17294 useless extension candidates. Maximal degree in co-relation 29546. Up to 2866 conditions per place. [2022-07-22 21:41:50,859 INFO L132 encePairwiseOnDemand]: 398/414 looper letters, 262 selfloop transitions, 58 changer transitions 0/630 dead transitions. [2022-07-22 21:41:50,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 630 transitions, 3245 flow [2022-07-22 21:41:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:41:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:41:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6768 transitions. [2022-07-22 21:41:50,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8173913043478261 [2022-07-22 21:41:50,870 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6768 transitions. [2022-07-22 21:41:50,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6768 transitions. [2022-07-22 21:41:50,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:50,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6768 transitions. [2022-07-22 21:41:50,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 338.4) internal successors, (6768), 20 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:50,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:50,892 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:50,892 INFO L186 Difference]: Start difference. First operand has 479 places, 469 transitions, 1652 flow. Second operand 20 states and 6768 transitions. [2022-07-22 21:41:50,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 630 transitions, 3245 flow [2022-07-22 21:41:50,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 630 transitions, 3069 flow, removed 11 selfloop flow, removed 12 redundant places. [2022-07-22 21:41:50,945 INFO L242 Difference]: Finished difference. Result has 497 places, 484 transitions, 1916 flow [2022-07-22 21:41:50,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1916, PETRI_PLACES=497, PETRI_TRANSITIONS=484} [2022-07-22 21:41:50,947 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 123 predicate places. [2022-07-22 21:41:50,947 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 484 transitions, 1916 flow [2022-07-22 21:41:50,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:50,948 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:50,949 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:50,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:41:50,950 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:50,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:50,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1039897095, now seen corresponding path program 5 times [2022-07-22 21:41:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:50,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454093979] [2022-07-22 21:41:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:50,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:51,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:51,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454093979] [2022-07-22 21:41:51,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454093979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:51,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:51,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:41:51,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762687344] [2022-07-22 21:41:51,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:51,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:41:51,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:41:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:41:51,079 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:41:51,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 484 transitions, 1916 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:51,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:51,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:41:51,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:54,306 INFO L129 PetriNetUnfolder]: 2922/17768 cut-off events. [2022-07-22 21:41:54,306 INFO L130 PetriNetUnfolder]: For 14799/14856 co-relation queries the response was YES. [2022-07-22 21:41:54,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30743 conditions, 17768 events. 2922/17768 cut-off events. For 14799/14856 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 237955 event pairs, 752 based on Foata normal form. 42/17138 useless extension candidates. Maximal degree in co-relation 30679. Up to 2134 conditions per place. [2022-07-22 21:41:54,450 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 293 selfloop transitions, 75 changer transitions 0/678 dead transitions. [2022-07-22 21:41:54,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 678 transitions, 3701 flow [2022-07-22 21:41:54,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 21:41:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-22 21:41:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7817 transitions. [2022-07-22 21:41:54,456 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8209409787859694 [2022-07-22 21:41:54,456 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7817 transitions. [2022-07-22 21:41:54,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7817 transitions. [2022-07-22 21:41:54,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:54,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7817 transitions. [2022-07-22 21:41:54,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 339.8695652173913) internal successors, (7817), 23 states have internal predecessors, (7817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:54,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:54,473 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:54,473 INFO L186 Difference]: Start difference. First operand has 497 places, 484 transitions, 1916 flow. Second operand 23 states and 7817 transitions. [2022-07-22 21:41:54,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 678 transitions, 3701 flow [2022-07-22 21:41:54,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 678 transitions, 3496 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-07-22 21:41:54,553 INFO L242 Difference]: Finished difference. Result has 517 places, 490 transitions, 2052 flow [2022-07-22 21:41:54,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2052, PETRI_PLACES=517, PETRI_TRANSITIONS=490} [2022-07-22 21:41:54,555 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 143 predicate places. [2022-07-22 21:41:54,555 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 490 transitions, 2052 flow [2022-07-22 21:41:54,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:54,556 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:54,556 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:54,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:41:54,558 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:54,558 INFO L85 PathProgramCache]: Analyzing trace with hash 859002869, now seen corresponding path program 6 times [2022-07-22 21:41:54,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:54,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24379747] [2022-07-22 21:41:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:54,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:54,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:54,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24379747] [2022-07-22 21:41:54,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24379747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:54,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:54,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:41:54,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079813229] [2022-07-22 21:41:54,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:54,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:41:54,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:54,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:41:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:41:54,680 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:41:54,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 490 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:54,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:54,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:41:54,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:57,901 INFO L129 PetriNetUnfolder]: 2989/18274 cut-off events. [2022-07-22 21:41:57,901 INFO L130 PetriNetUnfolder]: For 20654/20702 co-relation queries the response was YES. [2022-07-22 21:41:58,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32674 conditions, 18274 events. 2989/18274 cut-off events. For 20654/20702 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 244814 event pairs, 390 based on Foata normal form. 12/17579 useless extension candidates. Maximal degree in co-relation 32604. Up to 3267 conditions per place. [2022-07-22 21:41:58,084 INFO L132 encePairwiseOnDemand]: 398/414 looper letters, 266 selfloop transitions, 66 changer transitions 0/642 dead transitions. [2022-07-22 21:41:58,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 642 transitions, 3839 flow [2022-07-22 21:41:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:41:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:41:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6765 transitions. [2022-07-22 21:41:58,089 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8170289855072463 [2022-07-22 21:41:58,089 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6765 transitions. [2022-07-22 21:41:58,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6765 transitions. [2022-07-22 21:41:58,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:58,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6765 transitions. [2022-07-22 21:41:58,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 338.25) internal successors, (6765), 20 states have internal predecessors, (6765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,105 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,105 INFO L186 Difference]: Start difference. First operand has 517 places, 490 transitions, 2052 flow. Second operand 20 states and 6765 transitions. [2022-07-22 21:41:58,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 642 transitions, 3839 flow [2022-07-22 21:41:58,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 642 transitions, 3616 flow, removed 21 selfloop flow, removed 13 redundant places. [2022-07-22 21:41:58,198 INFO L242 Difference]: Finished difference. Result has 534 places, 513 transitions, 2536 flow [2022-07-22 21:41:58,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2536, PETRI_PLACES=534, PETRI_TRANSITIONS=513} [2022-07-22 21:41:58,200 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 160 predicate places. [2022-07-22 21:41:58,200 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 513 transitions, 2536 flow [2022-07-22 21:41:58,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:58,201 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:58,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:41:58,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:58,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1674883849, now seen corresponding path program 7 times [2022-07-22 21:41:58,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:58,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917910049] [2022-07-22 21:41:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:58,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:58,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:58,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917910049] [2022-07-22 21:41:58,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917910049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:58,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:58,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:41:58,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578253452] [2022-07-22 21:41:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:58,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:41:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:41:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:41:58,346 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:41:58,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 513 transitions, 2536 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:58,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:41:58,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:02,235 INFO L129 PetriNetUnfolder]: 3058/19392 cut-off events. [2022-07-22 21:42:02,235 INFO L130 PetriNetUnfolder]: For 26271/26311 co-relation queries the response was YES. [2022-07-22 21:42:02,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35001 conditions, 19392 events. 3058/19392 cut-off events. For 26271/26311 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 264797 event pairs, 618 based on Foata normal form. 32/18687 useless extension candidates. Maximal degree in co-relation 34920. Up to 1307 conditions per place. [2022-07-22 21:42:02,623 INFO L132 encePairwiseOnDemand]: 395/414 looper letters, 353 selfloop transitions, 129 changer transitions 0/792 dead transitions. [2022-07-22 21:42:02,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 792 transitions, 5128 flow [2022-07-22 21:42:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 21:42:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-22 21:42:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 9881 transitions. [2022-07-22 21:42:02,642 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8230051640846243 [2022-07-22 21:42:02,642 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 9881 transitions. [2022-07-22 21:42:02,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 9881 transitions. [2022-07-22 21:42:02,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:02,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 9881 transitions. [2022-07-22 21:42:02,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 340.7241379310345) internal successors, (9881), 29 states have internal predecessors, (9881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,670 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,670 INFO L186 Difference]: Start difference. First operand has 534 places, 513 transitions, 2536 flow. Second operand 29 states and 9881 transitions. [2022-07-22 21:42:02,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 792 transitions, 5128 flow [2022-07-22 21:42:02,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 792 transitions, 4833 flow, removed 107 selfloop flow, removed 6 redundant places. [2022-07-22 21:42:02,797 INFO L242 Difference]: Finished difference. Result has 568 places, 543 transitions, 2952 flow [2022-07-22 21:42:02,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2952, PETRI_PLACES=568, PETRI_TRANSITIONS=543} [2022-07-22 21:42:02,799 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 194 predicate places. [2022-07-22 21:42:02,799 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 543 transitions, 2952 flow [2022-07-22 21:42:02,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,800 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:02,800 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:02,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:42:02,800 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:02,801 INFO L85 PathProgramCache]: Analyzing trace with hash 549687077, now seen corresponding path program 8 times [2022-07-22 21:42:02,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:02,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408700951] [2022-07-22 21:42:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:02,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:02,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:02,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408700951] [2022-07-22 21:42:02,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408700951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:02,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:02,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:42:02,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593213640] [2022-07-22 21:42:02,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:02,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:42:02,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:02,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:42:02,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:42:02,935 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:42:02,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 543 transitions, 2952 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:02,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:42:02,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:07,732 INFO L129 PetriNetUnfolder]: 3753/22963 cut-off events. [2022-07-22 21:42:07,732 INFO L130 PetriNetUnfolder]: For 39453/39537 co-relation queries the response was YES. [2022-07-22 21:42:07,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44410 conditions, 22963 events. 3753/22963 cut-off events. For 39453/39537 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 322364 event pairs, 544 based on Foata normal form. 39/22142 useless extension candidates. Maximal degree in co-relation 44317. Up to 1736 conditions per place. [2022-07-22 21:42:08,018 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 376 selfloop transitions, 146 changer transitions 0/832 dead transitions. [2022-07-22 21:42:08,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 832 transitions, 6095 flow [2022-07-22 21:42:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 21:42:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-22 21:42:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 9866 transitions. [2022-07-22 21:42:08,035 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8217557887722805 [2022-07-22 21:42:08,035 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 9866 transitions. [2022-07-22 21:42:08,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 9866 transitions. [2022-07-22 21:42:08,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:08,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 9866 transitions. [2022-07-22 21:42:08,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 340.2068965517241) internal successors, (9866), 29 states have internal predecessors, (9866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,222 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,222 INFO L186 Difference]: Start difference. First operand has 568 places, 543 transitions, 2952 flow. Second operand 29 states and 9866 transitions. [2022-07-22 21:42:08,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 832 transitions, 6095 flow [2022-07-22 21:42:08,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 832 transitions, 5867 flow, removed 27 selfloop flow, removed 8 redundant places. [2022-07-22 21:42:08,412 INFO L242 Difference]: Finished difference. Result has 611 places, 585 transitions, 3892 flow [2022-07-22 21:42:08,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3892, PETRI_PLACES=611, PETRI_TRANSITIONS=585} [2022-07-22 21:42:08,414 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 237 predicate places. [2022-07-22 21:42:08,414 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 585 transitions, 3892 flow [2022-07-22 21:42:08,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,415 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:08,415 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:08,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:42:08,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:08,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:08,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1204322865, now seen corresponding path program 9 times [2022-07-22 21:42:08,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:08,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097099000] [2022-07-22 21:42:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:08,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:08,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:08,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097099000] [2022-07-22 21:42:08,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097099000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:08,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:08,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:42:08,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820348537] [2022-07-22 21:42:08,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:08,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:42:08,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:42:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:42:08,518 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:42:08,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 585 transitions, 3892 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:08,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:42:08,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:14,170 INFO L129 PetriNetUnfolder]: 3740/23918 cut-off events. [2022-07-22 21:42:14,170 INFO L130 PetriNetUnfolder]: For 56109/56259 co-relation queries the response was YES. [2022-07-22 21:42:14,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47957 conditions, 23918 events. 3740/23918 cut-off events. For 56109/56259 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 340698 event pairs, 623 based on Foata normal form. 56/23109 useless extension candidates. Maximal degree in co-relation 47840. Up to 2154 conditions per place. [2022-07-22 21:42:14,629 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 394 selfloop transitions, 129 changer transitions 0/833 dead transitions. [2022-07-22 21:42:14,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 833 transitions, 6897 flow [2022-07-22 21:42:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 21:42:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-22 21:42:14,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 9189 transitions. [2022-07-22 21:42:14,635 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.822061191626409 [2022-07-22 21:42:14,636 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 9189 transitions. [2022-07-22 21:42:14,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 9189 transitions. [2022-07-22 21:42:14,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:14,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 9189 transitions. [2022-07-22 21:42:14,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 340.3333333333333) internal successors, (9189), 27 states have internal predecessors, (9189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 414.0) internal successors, (11592), 28 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,654 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 414.0) internal successors, (11592), 28 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,654 INFO L186 Difference]: Start difference. First operand has 611 places, 585 transitions, 3892 flow. Second operand 27 states and 9189 transitions. [2022-07-22 21:42:14,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 833 transitions, 6897 flow [2022-07-22 21:42:14,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 833 transitions, 6423 flow, removed 206 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:14,993 INFO L242 Difference]: Finished difference. Result has 638 places, 590 transitions, 4025 flow [2022-07-22 21:42:14,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=3622, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4025, PETRI_PLACES=638, PETRI_TRANSITIONS=590} [2022-07-22 21:42:14,994 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 264 predicate places. [2022-07-22 21:42:14,994 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 590 transitions, 4025 flow [2022-07-22 21:42:14,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,995 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:14,995 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:14,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:42:14,996 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:14,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:14,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1482036129, now seen corresponding path program 10 times [2022-07-22 21:42:14,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:14,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028047055] [2022-07-22 21:42:14,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:14,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:15,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:15,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028047055] [2022-07-22 21:42:15,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028047055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:15,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:15,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:42:15,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72235669] [2022-07-22 21:42:15,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:15,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:42:15,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:15,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:42:15,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:42:15,101 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:42:15,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 590 transitions, 4025 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:15,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:42:15,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:20,614 INFO L129 PetriNetUnfolder]: 3802/23100 cut-off events. [2022-07-22 21:42:20,615 INFO L130 PetriNetUnfolder]: For 52339/52453 co-relation queries the response was YES. [2022-07-22 21:42:21,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47849 conditions, 23100 events. 3802/23100 cut-off events. For 52339/52453 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 323845 event pairs, 526 based on Foata normal form. 43/22293 useless extension candidates. Maximal degree in co-relation 47728. Up to 1710 conditions per place. [2022-07-22 21:42:21,091 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 362 selfloop transitions, 143 changer transitions 0/815 dead transitions. [2022-07-22 21:42:21,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 815 transitions, 6787 flow [2022-07-22 21:42:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:42:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:42:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 8193 transitions. [2022-07-22 21:42:21,095 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8245772946859904 [2022-07-22 21:42:21,095 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 8193 transitions. [2022-07-22 21:42:21,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 8193 transitions. [2022-07-22 21:42:21,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:21,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 8193 transitions. [2022-07-22 21:42:21,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 341.375) internal successors, (8193), 24 states have internal predecessors, (8193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:21,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 414.0) internal successors, (10350), 25 states have internal predecessors, (10350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:21,109 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 414.0) internal successors, (10350), 25 states have internal predecessors, (10350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:21,110 INFO L186 Difference]: Start difference. First operand has 638 places, 590 transitions, 4025 flow. Second operand 24 states and 8193 transitions. [2022-07-22 21:42:21,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 815 transitions, 6787 flow [2022-07-22 21:42:21,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 815 transitions, 6426 flow, removed 45 selfloop flow, removed 20 redundant places. [2022-07-22 21:42:21,401 INFO L242 Difference]: Finished difference. Result has 649 places, 602 transitions, 4420 flow [2022-07-22 21:42:21,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=3784, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4420, PETRI_PLACES=649, PETRI_TRANSITIONS=602} [2022-07-22 21:42:21,402 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 275 predicate places. [2022-07-22 21:42:21,402 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 602 transitions, 4420 flow [2022-07-22 21:42:21,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:21,403 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:21,403 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:21,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:42:21,403 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:21,404 INFO L85 PathProgramCache]: Analyzing trace with hash -42145455, now seen corresponding path program 11 times [2022-07-22 21:42:21,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:21,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788217892] [2022-07-22 21:42:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:21,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:21,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788217892] [2022-07-22 21:42:21,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788217892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:21,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:21,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:42:21,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965024375] [2022-07-22 21:42:21,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:21,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:42:21,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:42:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:42:21,509 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-22 21:42:21,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 602 transitions, 4420 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:21,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:21,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-22 21:42:21,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand