./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-exp-term-subst.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 a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:25:35,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:25:35,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:25:35,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:25:35,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:25:35,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:25:35,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:25:35,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:25:35,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:25:35,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:25:35,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:25:35,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:25:35,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:25:35,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:25:35,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:25:35,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:25:35,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:25:35,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:25:35,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:25:35,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:25:35,745 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:25:35,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:25:35,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:25:35,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:25:35,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:25:35,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:25:35,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:25:35,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:25:35,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:25:35,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:25:35,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:25:35,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:25:35,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:25:35,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:25:35,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:25:35,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:25:35,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:25:35,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:25:35,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:25:35,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:25:35,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:25:35,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:25:35,767 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:25:35,798 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:25:35,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:25:35,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:25:35,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:25:35,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:25:35,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:25:35,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:25:35,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:25:35,801 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:25:35,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:25:35,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:25:35,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:25:35,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:25:35,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:25:35,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:25:35,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:25:35,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:25:35,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:25:35,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:25:35,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:25:35,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:25:35,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:25:35,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:25:35,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:25:35,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:35,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:25:35,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:25:35,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:25:35,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:25:35,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:25:35,807 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:25:35,807 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:25:35,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:25:35,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b [2022-07-19 21:25:36,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:25:36,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:25:36,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:25:36,041 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:25:36,041 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:25:36,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-07-19 21:25:36,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e988f6c6/7840b5b5383a466fbaa7b16de04a699b/FLAGf69e0ee6d [2022-07-19 21:25:36,456 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:25:36,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-07-19 21:25:36,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e988f6c6/7840b5b5383a466fbaa7b16de04a699b/FLAGf69e0ee6d [2022-07-19 21:25:36,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e988f6c6/7840b5b5383a466fbaa7b16de04a699b [2022-07-19 21:25:36,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:25:36,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:25:36,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:36,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:25:36,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:25:36,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f22e009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36, skipping insertion in model container [2022-07-19 21:25:36,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:25:36,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:25:36,660 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-exp-term-subst.wvr.c[3072,3085] [2022-07-19 21:25:36,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:36,671 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:25:36,692 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-exp-term-subst.wvr.c[3072,3085] [2022-07-19 21:25:36,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:36,704 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:25:36,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36 WrapperNode [2022-07-19 21:25:36,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:36,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:36,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:25:36,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:25:36,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,753 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2022-07-19 21:25:36,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:36,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:25:36,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:25:36,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:25:36,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:25:36,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:25:36,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:25:36,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:25:36,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (1/1) ... [2022-07-19 21:25:36,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:36,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:36,848 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) [2022-07-19 21:25:36,851 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 [2022-07-19 21:25:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:25:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:25:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:25:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:25:36,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:25:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:25:36,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:25:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:25:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:25:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:25:36,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:25:36,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:25:36,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:25:36,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:25:36,880 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:25:36,951 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:25:36,952 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:25:37,229 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:25:37,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:25:37,240 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:25:37,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:37 BoogieIcfgContainer [2022-07-19 21:25:37,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:25:37,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:25:37,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:25:37,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:25:37,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:25:36" (1/3) ... [2022-07-19 21:25:37,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686f54b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:37, skipping insertion in model container [2022-07-19 21:25:37,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:36" (2/3) ... [2022-07-19 21:25:37,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686f54b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:37, skipping insertion in model container [2022-07-19 21:25:37,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:37" (3/3) ... [2022-07-19 21:25:37,249 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2022-07-19 21:25:37,253 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:25:37,262 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:25:37,262 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:25:37,262 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:25:37,354 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:25:37,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 225 places, 232 transitions, 488 flow [2022-07-19 21:25:37,467 INFO L129 PetriNetUnfolder]: 17/229 cut-off events. [2022-07-19 21:25:37,468 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:37,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 229 events. 17/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 492 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-07-19 21:25:37,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 232 transitions, 488 flow [2022-07-19 21:25:37,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 218 transitions, 454 flow [2022-07-19 21:25:37,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:25:37,501 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@1101ae3c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c89274a [2022-07-19 21:25:37,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:25:37,546 INFO L129 PetriNetUnfolder]: 17/217 cut-off events. [2022-07-19 21:25:37,546 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:37,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:37,547 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] [2022-07-19 21:25:37,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash -473937021, now seen corresponding path program 1 times [2022-07-19 21:25:37,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:37,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949318056] [2022-07-19 21:25:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:37,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:38,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:38,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949318056] [2022-07-19 21:25:38,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949318056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:38,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:38,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407385385] [2022-07-19 21:25:38,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:38,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:38,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:38,082 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 232 [2022-07-19 21:25:38,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 218 transitions, 454 flow. Second operand has 8 states, 8 states have (on average 199.75) internal successors, (1598), 8 states have internal predecessors, (1598), 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) [2022-07-19 21:25:38,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:38,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 232 [2022-07-19 21:25:38,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:38,365 INFO L129 PetriNetUnfolder]: 135/600 cut-off events. [2022-07-19 21:25:38,365 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-07-19 21:25:38,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 600 events. 135/600 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3287 event pairs, 26 based on Foata normal form. 109/680 useless extension candidates. Maximal degree in co-relation 747. Up to 68 conditions per place. [2022-07-19 21:25:38,378 INFO L132 encePairwiseOnDemand]: 211/232 looper letters, 49 selfloop transitions, 17 changer transitions 16/266 dead transitions. [2022-07-19 21:25:38,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 266 transitions, 753 flow [2022-07-19 21:25:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:25:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:25:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2676 transitions. [2022-07-19 21:25:38,409 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8872679045092838 [2022-07-19 21:25:38,410 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2676 transitions. [2022-07-19 21:25:38,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2676 transitions. [2022-07-19 21:25:38,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:38,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2676 transitions. [2022-07-19 21:25:38,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 205.84615384615384) internal successors, (2676), 13 states have internal predecessors, (2676), 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) [2022-07-19 21:25:38,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 232.0) internal successors, (3248), 14 states have internal predecessors, (3248), 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) [2022-07-19 21:25:38,440 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 232.0) internal successors, (3248), 14 states have internal predecessors, (3248), 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) [2022-07-19 21:25:38,442 INFO L186 Difference]: Start difference. First operand has 211 places, 218 transitions, 454 flow. Second operand 13 states and 2676 transitions. [2022-07-19 21:25:38,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 266 transitions, 753 flow [2022-07-19 21:25:38,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 266 transitions, 715 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:38,456 INFO L242 Difference]: Finished difference. Result has 224 places, 222 transitions, 535 flow [2022-07-19 21:25:38,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=535, PETRI_PLACES=224, PETRI_TRANSITIONS=222} [2022-07-19 21:25:38,462 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 13 predicate places. [2022-07-19 21:25:38,462 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 222 transitions, 535 flow [2022-07-19 21:25:38,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 199.75) internal successors, (1598), 8 states have internal predecessors, (1598), 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) [2022-07-19 21:25:38,464 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:38,464 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] [2022-07-19 21:25:38,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:25:38,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:38,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash 727133555, now seen corresponding path program 1 times [2022-07-19 21:25:38,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:38,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890555946] [2022-07-19 21:25:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:38,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:38,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:38,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890555946] [2022-07-19 21:25:38,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890555946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:38,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:38,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:38,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757166125] [2022-07-19 21:25:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:38,701 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:38,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 222 transitions, 535 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:38,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:38,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:38,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:39,237 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 150#L44-5true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,238 INFO L384 tUnfolder$Statistics]: this new event has 71 ancestors and is cut-off event [2022-07-19 21:25:39,238 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:39,238 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:39,239 INFO L387 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-07-19 21:25:39,278 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 43#L44-8true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,279 INFO L384 tUnfolder$Statistics]: this new event has 72 ancestors and is cut-off event [2022-07-19 21:25:39,279 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,279 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:39,279 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,283 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 57#L74-4true, 106#L50-18true, 228#true, 202#L44-6true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,283 INFO L384 tUnfolder$Statistics]: this new event has 72 ancestors and is cut-off event [2022-07-19 21:25:39,283 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,283 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:39,284 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,626 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), 106#L50-18true, Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 228#true, 87#L75-2true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,626 INFO L384 tUnfolder$Statistics]: this new event has 84 ancestors and is cut-off event [2022-07-19 21:25:39,626 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2022-07-19 21:25:39,626 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-07-19 21:25:39,627 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:39,729 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 20#thread1ENTRYtrue, Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,730 INFO L384 tUnfolder$Statistics]: this new event has 91 ancestors and is cut-off event [2022-07-19 21:25:39,731 INFO L387 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-07-19 21:25:39,731 INFO L387 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-07-19 21:25:39,731 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:39,740 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([581] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_7~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_7~0=v_~result_7~0_1} AuxVars[] AssignedVars[~result_7~0][220], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 43#L44-8true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,740 INFO L384 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-07-19 21:25:39,741 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,741 INFO L387 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-07-19 21:25:39,741 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,741 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([581] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_7~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_7~0=v_~result_7~0_1} AuxVars[] AssignedVars[~result_7~0][220], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 150#L44-5true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,741 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-19 21:25:39,742 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:39,742 INFO L387 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-07-19 21:25:39,742 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:39,745 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 53#L44-2true, 66#L56-18true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,745 INFO L384 tUnfolder$Statistics]: this new event has 92 ancestors and is cut-off event [2022-07-19 21:25:39,745 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,746 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-07-19 21:25:39,746 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:39,750 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 145#L44true, 66#L56-18true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,751 INFO L384 tUnfolder$Statistics]: this new event has 92 ancestors and is cut-off event [2022-07-19 21:25:39,751 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-07-19 21:25:39,751 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:39,751 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,761 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([581] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_7~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_7~0=v_~result_7~0_1} AuxVars[] AssignedVars[~result_7~0][220], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 57#L74-4true, 106#L50-18true, 228#true, 202#L44-6true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,761 INFO L384 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-07-19 21:25:39,761 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,762 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,762 INFO L387 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-07-19 21:25:39,763 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 150#L44-5true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,763 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-19 21:25:39,763 INFO L387 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-07-19 21:25:39,764 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:39,764 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:39,764 INFO L387 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-07-19 21:25:39,764 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 43#L44-8true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,764 INFO L384 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-07-19 21:25:39,765 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,765 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:39,766 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,766 INFO L387 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-07-19 21:25:39,767 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), 170#L44-3true, Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,768 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-19 21:25:39,768 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:39,769 INFO L387 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-07-19 21:25:39,769 INFO L387 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-07-19 21:25:39,778 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), 145#L44true, Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,778 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2022-07-19 21:25:39,778 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-07-19 21:25:39,778 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:39,779 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,779 INFO L387 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-07-19 21:25:39,785 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 57#L74-4true, 106#L50-18true, 228#true, 202#L44-6true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,785 INFO L384 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-07-19 21:25:39,785 INFO L387 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-07-19 21:25:39,785 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,785 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:39,786 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,793 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([581] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_7~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_7~0=v_~result_7~0_1} AuxVars[] AssignedVars[~result_7~0][220], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 145#L44true, 66#L56-18true, 57#L74-4true, 106#L50-18true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,794 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2022-07-19 21:25:39,794 INFO L387 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-07-19 21:25:39,794 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:39,794 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-07-19 21:25:39,864 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([581] L50-17-->L50-18: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite8#1_3| v_~result_7~0_1) InVars {thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_3|, ~result_7~0=v_~result_7~0_1} AuxVars[] AssignedVars[~result_7~0][220], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), 106#L50-18true, Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 87#L75-2true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,864 INFO L384 tUnfolder$Statistics]: this new event has 104 ancestors and is cut-off event [2022-07-19 21:25:39,865 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is cut-off event [2022-07-19 21:25:39,865 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2022-07-19 21:25:39,865 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:39,869 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][167], [Black: 253#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), 106#L50-18true, Black: 231#(= ~result_7~0 0), Black: 255#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 228#true, 87#L75-2true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))))]) [2022-07-19 21:25:39,869 INFO L384 tUnfolder$Statistics]: this new event has 104 ancestors and is cut-off event [2022-07-19 21:25:39,869 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is cut-off event [2022-07-19 21:25:39,869 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2022-07-19 21:25:39,870 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-07-19 21:25:39,870 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:39,900 INFO L129 PetriNetUnfolder]: 1284/8217 cut-off events. [2022-07-19 21:25:39,900 INFO L130 PetriNetUnfolder]: For 972/1265 co-relation queries the response was YES. [2022-07-19 21:25:39,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12135 conditions, 8217 events. 1284/8217 cut-off events. For 972/1265 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 100442 event pairs, 225 based on Foata normal form. 49/7228 useless extension candidates. Maximal degree in co-relation 12089. Up to 784 conditions per place. [2022-07-19 21:25:39,985 INFO L132 encePairwiseOnDemand]: 215/232 looper letters, 79 selfloop transitions, 28 changer transitions 0/299 dead transitions. [2022-07-19 21:25:39,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 299 transitions, 924 flow [2022-07-19 21:25:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:25:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:25:39,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1462 transitions. [2022-07-19 21:25:39,989 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9002463054187192 [2022-07-19 21:25:39,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1462 transitions. [2022-07-19 21:25:39,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1462 transitions. [2022-07-19 21:25:39,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:39,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1462 transitions. [2022-07-19 21:25:39,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 208.85714285714286) internal successors, (1462), 7 states have internal predecessors, (1462), 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) [2022-07-19 21:25:39,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:25:39,998 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:25:39,998 INFO L186 Difference]: Start difference. First operand has 224 places, 222 transitions, 535 flow. Second operand 7 states and 1462 transitions. [2022-07-19 21:25:39,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 299 transitions, 924 flow [2022-07-19 21:25:40,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 299 transitions, 920 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:40,060 INFO L242 Difference]: Finished difference. Result has 227 places, 250 transitions, 745 flow [2022-07-19 21:25:40,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=745, PETRI_PLACES=227, PETRI_TRANSITIONS=250} [2022-07-19 21:25:40,066 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 16 predicate places. [2022-07-19 21:25:40,067 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 250 transitions, 745 flow [2022-07-19 21:25:40,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:40,069 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:40,069 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] [2022-07-19 21:25:40,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:25:40,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1790151827, now seen corresponding path program 2 times [2022-07-19 21:25:40,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:40,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807523157] [2022-07-19 21:25:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:40,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:40,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:40,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807523157] [2022-07-19 21:25:40,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807523157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:40,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:40,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:40,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482463299] [2022-07-19 21:25:40,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:40,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:40,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:40,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:40,236 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:40,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 250 transitions, 745 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:40,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:40,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:40,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:41,169 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][170], [Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 87#L75-2true, 106#L50-18true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))]) [2022-07-19 21:25:41,170 INFO L384 tUnfolder$Statistics]: this new event has 84 ancestors and is cut-off event [2022-07-19 21:25:41,170 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2022-07-19 21:25:41,170 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-07-19 21:25:41,170 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:41,316 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][170], [Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 145#L44true, 66#L56-18true, 57#L74-4true, 106#L50-18true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))]) [2022-07-19 21:25:41,316 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2022-07-19 21:25:41,316 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:41,317 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:41,317 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-07-19 21:25:41,322 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][170], [Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 150#L44-5true, 57#L74-4true, 106#L50-18true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))]) [2022-07-19 21:25:41,322 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-19 21:25:41,322 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:41,323 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-07-19 21:25:41,323 INFO L387 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-07-19 21:25:41,336 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][170], [Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 242#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 57#L74-4true, 106#L50-18true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 202#L44-6true, 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))]) [2022-07-19 21:25:41,337 INFO L384 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-07-19 21:25:41,337 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:41,337 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:41,338 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:41,517 INFO L129 PetriNetUnfolder]: 1520/10118 cut-off events. [2022-07-19 21:25:41,518 INFO L130 PetriNetUnfolder]: For 2801/3105 co-relation queries the response was YES. [2022-07-19 21:25:41,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16565 conditions, 10118 events. 1520/10118 cut-off events. For 2801/3105 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 127372 event pairs, 396 based on Foata normal form. 77/9595 useless extension candidates. Maximal degree in co-relation 13676. Up to 1227 conditions per place. [2022-07-19 21:25:41,600 INFO L132 encePairwiseOnDemand]: 215/232 looper letters, 102 selfloop transitions, 32 changer transitions 9/331 dead transitions. [2022-07-19 21:25:41,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 331 transitions, 1409 flow [2022-07-19 21:25:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1055 transitions. [2022-07-19 21:25:41,603 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9094827586206896 [2022-07-19 21:25:41,604 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1055 transitions. [2022-07-19 21:25:41,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1055 transitions. [2022-07-19 21:25:41,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:41,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1055 transitions. [2022-07-19 21:25:41,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 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) [2022-07-19 21:25:41,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:41,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:41,609 INFO L186 Difference]: Start difference. First operand has 227 places, 250 transitions, 745 flow. Second operand 5 states and 1055 transitions. [2022-07-19 21:25:41,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 331 transitions, 1409 flow [2022-07-19 21:25:41,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 331 transitions, 1409 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:41,651 INFO L242 Difference]: Finished difference. Result has 235 places, 271 transitions, 1039 flow [2022-07-19 21:25:41,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1039, PETRI_PLACES=235, PETRI_TRANSITIONS=271} [2022-07-19 21:25:41,652 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 24 predicate places. [2022-07-19 21:25:41,652 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 271 transitions, 1039 flow [2022-07-19 21:25:41,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:41,653 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:41,653 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] [2022-07-19 21:25:41,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:25:41,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:41,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1777024895, now seen corresponding path program 3 times [2022-07-19 21:25:41,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:41,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851580348] [2022-07-19 21:25:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:41,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:41,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:41,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851580348] [2022-07-19 21:25:41,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851580348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:41,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:41,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:41,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273909349] [2022-07-19 21:25:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:41,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:41,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:41,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:41,789 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:41,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 271 transitions, 1039 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:41,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:41,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:41,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:42,882 INFO L129 PetriNetUnfolder]: 1328/9091 cut-off events. [2022-07-19 21:25:42,883 INFO L130 PetriNetUnfolder]: For 4640/4953 co-relation queries the response was YES. [2022-07-19 21:25:42,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16024 conditions, 9091 events. 1328/9091 cut-off events. For 4640/4953 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 112340 event pairs, 338 based on Foata normal form. 113/8715 useless extension candidates. Maximal degree in co-relation 13344. Up to 1209 conditions per place. [2022-07-19 21:25:43,017 INFO L132 encePairwiseOnDemand]: 217/232 looper letters, 124 selfloop transitions, 19 changer transitions 4/335 dead transitions. [2022-07-19 21:25:43,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 335 transitions, 1755 flow [2022-07-19 21:25:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1043 transitions. [2022-07-19 21:25:43,021 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8991379310344828 [2022-07-19 21:25:43,021 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1043 transitions. [2022-07-19 21:25:43,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1043 transitions. [2022-07-19 21:25:43,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:43,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1043 transitions. [2022-07-19 21:25:43,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.6) internal successors, (1043), 5 states have internal predecessors, (1043), 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) [2022-07-19 21:25:43,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:43,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:43,027 INFO L186 Difference]: Start difference. First operand has 235 places, 271 transitions, 1039 flow. Second operand 5 states and 1043 transitions. [2022-07-19 21:25:43,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 335 transitions, 1755 flow [2022-07-19 21:25:43,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 335 transitions, 1749 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:43,058 INFO L242 Difference]: Finished difference. Result has 241 places, 286 transitions, 1299 flow [2022-07-19 21:25:43,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1299, PETRI_PLACES=241, PETRI_TRANSITIONS=286} [2022-07-19 21:25:43,060 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 30 predicate places. [2022-07-19 21:25:43,060 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 286 transitions, 1299 flow [2022-07-19 21:25:43,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:43,061 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:43,061 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] [2022-07-19 21:25:43,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:25:43,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:43,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1427730761, now seen corresponding path program 1 times [2022-07-19 21:25:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:43,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761023088] [2022-07-19 21:25:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:43,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:43,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761023088] [2022-07-19 21:25:43,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761023088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:43,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:43,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:43,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583994306] [2022-07-19 21:25:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:43,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:43,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:43,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:43,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:43,252 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:43,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 286 transitions, 1299 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:43,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:43,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:43,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:44,278 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][192], [Black: 282#true, Black: 286#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 284#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 87#L75-2true, Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), 106#L50-18true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))]) [2022-07-19 21:25:44,279 INFO L384 tUnfolder$Statistics]: this new event has 106 ancestors and is cut-off event [2022-07-19 21:25:44,279 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:25:44,279 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:44,279 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:44,335 INFO L129 PetriNetUnfolder]: 1403/10491 cut-off events. [2022-07-19 21:25:44,335 INFO L130 PetriNetUnfolder]: For 6905/7320 co-relation queries the response was YES. [2022-07-19 21:25:44,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18726 conditions, 10491 events. 1403/10491 cut-off events. For 6905/7320 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 134686 event pairs, 345 based on Foata normal form. 128/10069 useless extension candidates. Maximal degree in co-relation 14671. Up to 923 conditions per place. [2022-07-19 21:25:44,421 INFO L132 encePairwiseOnDemand]: 216/232 looper letters, 141 selfloop transitions, 42 changer transitions 4/375 dead transitions. [2022-07-19 21:25:44,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 375 transitions, 2375 flow [2022-07-19 21:25:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1054 transitions. [2022-07-19 21:25:44,424 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9086206896551724 [2022-07-19 21:25:44,424 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1054 transitions. [2022-07-19 21:25:44,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1054 transitions. [2022-07-19 21:25:44,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:44,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1054 transitions. [2022-07-19 21:25:44,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.8) internal successors, (1054), 5 states have internal predecessors, (1054), 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) [2022-07-19 21:25:44,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:44,429 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:44,430 INFO L186 Difference]: Start difference. First operand has 241 places, 286 transitions, 1299 flow. Second operand 5 states and 1054 transitions. [2022-07-19 21:25:44,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 375 transitions, 2375 flow [2022-07-19 21:25:44,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 375 transitions, 2375 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:44,463 INFO L242 Difference]: Finished difference. Result has 249 places, 315 transitions, 1769 flow [2022-07-19 21:25:44,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1769, PETRI_PLACES=249, PETRI_TRANSITIONS=315} [2022-07-19 21:25:44,464 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 38 predicate places. [2022-07-19 21:25:44,465 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 315 transitions, 1769 flow [2022-07-19 21:25:44,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:44,465 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:44,466 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] [2022-07-19 21:25:44,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:25:44,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:44,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:44,467 INFO L85 PathProgramCache]: Analyzing trace with hash -737967317, now seen corresponding path program 4 times [2022-07-19 21:25:44,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:44,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113431037] [2022-07-19 21:25:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:44,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:44,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:44,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113431037] [2022-07-19 21:25:44,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113431037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:44,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:44,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:44,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660666137] [2022-07-19 21:25:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:44,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:44,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:44,586 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:44,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 315 transitions, 1769 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:44,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:44,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:44,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:45,671 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][184], [Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 87#L75-2true, 106#L50-18true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 318#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 282#true, Black: 286#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 284#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), Black: 308#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 307#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_5~0 (* (- 256) (div ~sort_label_is_null_5~0 256))) 0)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 305#true]) [2022-07-19 21:25:45,672 INFO L384 tUnfolder$Statistics]: this new event has 106 ancestors and is cut-off event [2022-07-19 21:25:45,672 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:25:45,672 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:45,672 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:45,768 INFO L129 PetriNetUnfolder]: 1478/12213 cut-off events. [2022-07-19 21:25:45,768 INFO L130 PetriNetUnfolder]: For 10618/11054 co-relation queries the response was YES. [2022-07-19 21:25:45,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22260 conditions, 12213 events. 1478/12213 cut-off events. For 10618/11054 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 161854 event pairs, 394 based on Foata normal form. 95/11661 useless extension candidates. Maximal degree in co-relation 17446. Up to 1268 conditions per place. [2022-07-19 21:25:45,898 INFO L132 encePairwiseOnDemand]: 217/232 looper letters, 141 selfloop transitions, 44 changer transitions 4/377 dead transitions. [2022-07-19 21:25:45,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 377 transitions, 2697 flow [2022-07-19 21:25:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1041 transitions. [2022-07-19 21:25:45,902 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8974137931034483 [2022-07-19 21:25:45,902 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1041 transitions. [2022-07-19 21:25:45,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1041 transitions. [2022-07-19 21:25:45,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:45,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1041 transitions. [2022-07-19 21:25:45,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2022-07-19 21:25:45,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:45,907 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:45,908 INFO L186 Difference]: Start difference. First operand has 249 places, 315 transitions, 1769 flow. Second operand 5 states and 1041 transitions. [2022-07-19 21:25:45,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 377 transitions, 2697 flow [2022-07-19 21:25:45,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 377 transitions, 2679 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:45,954 INFO L242 Difference]: Finished difference. Result has 256 places, 332 transitions, 2176 flow [2022-07-19 21:25:45,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2176, PETRI_PLACES=256, PETRI_TRANSITIONS=332} [2022-07-19 21:25:45,958 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 45 predicate places. [2022-07-19 21:25:45,959 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 332 transitions, 2176 flow [2022-07-19 21:25:45,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:45,960 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:45,960 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] [2022-07-19 21:25:45,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:25:45,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:45,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2043090721, now seen corresponding path program 5 times [2022-07-19 21:25:45,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:45,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179369075] [2022-07-19 21:25:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:46,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:46,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179369075] [2022-07-19 21:25:46,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179369075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:46,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:46,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:46,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041779010] [2022-07-19 21:25:46,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:46,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:46,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:46,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:46,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:46,079 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:46,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 332 transitions, 2176 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:46,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:46,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:46,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:47,205 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][184], [Black: 319#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 317#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 87#L75-2true, 106#L50-18true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 318#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), 228#true, 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 282#true, Black: 286#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 284#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 328#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), Black: 308#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 307#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_5~0 (* (- 256) (div ~sort_label_is_null_5~0 256))) 0)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 305#true]) [2022-07-19 21:25:47,206 INFO L384 tUnfolder$Statistics]: this new event has 106 ancestors and is cut-off event [2022-07-19 21:25:47,206 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:25:47,206 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:47,206 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:47,275 INFO L129 PetriNetUnfolder]: 1441/11765 cut-off events. [2022-07-19 21:25:47,275 INFO L130 PetriNetUnfolder]: For 13031/13436 co-relation queries the response was YES. [2022-07-19 21:25:47,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22080 conditions, 11765 events. 1441/11765 cut-off events. For 13031/13436 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 155057 event pairs, 351 based on Foata normal form. 104/11255 useless extension candidates. Maximal degree in co-relation 17987. Up to 1120 conditions per place. [2022-07-19 21:25:47,391 INFO L132 encePairwiseOnDemand]: 216/232 looper letters, 144 selfloop transitions, 58 changer transitions 1/391 dead transitions. [2022-07-19 21:25:47,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 391 transitions, 3064 flow [2022-07-19 21:25:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1051 transitions. [2022-07-19 21:25:47,508 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9060344827586206 [2022-07-19 21:25:47,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1051 transitions. [2022-07-19 21:25:47,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1051 transitions. [2022-07-19 21:25:47,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:47,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1051 transitions. [2022-07-19 21:25:47,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.2) internal successors, (1051), 5 states have internal predecessors, (1051), 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) [2022-07-19 21:25:47,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:47,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:47,513 INFO L186 Difference]: Start difference. First operand has 256 places, 332 transitions, 2176 flow. Second operand 5 states and 1051 transitions. [2022-07-19 21:25:47,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 391 transitions, 3064 flow [2022-07-19 21:25:47,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 391 transitions, 3051 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:47,580 INFO L242 Difference]: Finished difference. Result has 261 places, 344 transitions, 2502 flow [2022-07-19 21:25:47,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2502, PETRI_PLACES=261, PETRI_TRANSITIONS=344} [2022-07-19 21:25:47,582 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 50 predicate places. [2022-07-19 21:25:47,583 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 344 transitions, 2502 flow [2022-07-19 21:25:47,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:47,583 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:47,583 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] [2022-07-19 21:25:47,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:25:47,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:47,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:47,586 INFO L85 PathProgramCache]: Analyzing trace with hash 774037361, now seen corresponding path program 6 times [2022-07-19 21:25:47,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:47,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492341937] [2022-07-19 21:25:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:47,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:47,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492341937] [2022-07-19 21:25:47,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492341937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:47,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:47,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:47,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30525343] [2022-07-19 21:25:47,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:47,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:47,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:47,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:47,722 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:47,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 344 transitions, 2502 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:47,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:47,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:47,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:48,868 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][190], [Black: 319#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 317#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, Black: 327#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 87#L75-2true, 106#L50-18true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 318#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 282#true, Black: 286#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 284#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 336#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), 328#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), Black: 308#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 307#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_5~0 (* (- 256) (div ~sort_label_is_null_5~0 256))) 0)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 305#true]) [2022-07-19 21:25:48,868 INFO L384 tUnfolder$Statistics]: this new event has 106 ancestors and is cut-off event [2022-07-19 21:25:48,868 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:48,868 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:48,868 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:25:48,957 INFO L129 PetriNetUnfolder]: 1438/10948 cut-off events. [2022-07-19 21:25:48,958 INFO L130 PetriNetUnfolder]: For 15590/16042 co-relation queries the response was YES. [2022-07-19 21:25:49,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21765 conditions, 10948 events. 1438/10948 cut-off events. For 15590/16042 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 141760 event pairs, 483 based on Foata normal form. 76/10429 useless extension candidates. Maximal degree in co-relation 18108. Up to 1088 conditions per place. [2022-07-19 21:25:49,096 INFO L132 encePairwiseOnDemand]: 218/232 looper letters, 162 selfloop transitions, 64 changer transitions 0/414 dead transitions. [2022-07-19 21:25:49,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 414 transitions, 3644 flow [2022-07-19 21:25:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1049 transitions. [2022-07-19 21:25:49,100 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9043103448275862 [2022-07-19 21:25:49,100 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1049 transitions. [2022-07-19 21:25:49,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1049 transitions. [2022-07-19 21:25:49,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:49,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1049 transitions. [2022-07-19 21:25:49,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.8) internal successors, (1049), 5 states have internal predecessors, (1049), 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) [2022-07-19 21:25:49,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:49,107 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:49,107 INFO L186 Difference]: Start difference. First operand has 261 places, 344 transitions, 2502 flow. Second operand 5 states and 1049 transitions. [2022-07-19 21:25:49,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 414 transitions, 3644 flow [2022-07-19 21:25:49,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 414 transitions, 3533 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:49,186 INFO L242 Difference]: Finished difference. Result has 266 places, 370 transitions, 3017 flow [2022-07-19 21:25:49,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3017, PETRI_PLACES=266, PETRI_TRANSITIONS=370} [2022-07-19 21:25:49,187 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 55 predicate places. [2022-07-19 21:25:49,188 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 370 transitions, 3017 flow [2022-07-19 21:25:49,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:49,188 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:49,189 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] [2022-07-19 21:25:49,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:25:49,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1011075125, now seen corresponding path program 2 times [2022-07-19 21:25:49,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:49,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916687668] [2022-07-19 21:25:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:49,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:49,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:49,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916687668] [2022-07-19 21:25:49,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916687668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:49,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:49,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:49,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128128896] [2022-07-19 21:25:49,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:49,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:49,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:49,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:49,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:49,335 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:49,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 370 transitions, 3017 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:49,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:49,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:49,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:50,652 INFO L129 PetriNetUnfolder]: 1542/11980 cut-off events. [2022-07-19 21:25:50,652 INFO L130 PetriNetUnfolder]: For 20932/21458 co-relation queries the response was YES. [2022-07-19 21:25:50,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24484 conditions, 11980 events. 1542/11980 cut-off events. For 20932/21458 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 159512 event pairs, 418 based on Foata normal form. 91/11469 useless extension candidates. Maximal degree in co-relation 20220. Up to 1128 conditions per place. [2022-07-19 21:25:50,754 INFO L132 encePairwiseOnDemand]: 218/232 looper letters, 210 selfloop transitions, 49 changer transitions 5/452 dead transitions. [2022-07-19 21:25:50,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 452 transitions, 4493 flow [2022-07-19 21:25:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:50,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2022-07-19 21:25:50,757 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9025862068965518 [2022-07-19 21:25:50,757 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2022-07-19 21:25:50,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2022-07-19 21:25:50,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:50,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2022-07-19 21:25:50,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 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) [2022-07-19 21:25:50,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:50,763 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:50,763 INFO L186 Difference]: Start difference. First operand has 266 places, 370 transitions, 3017 flow. Second operand 5 states and 1047 transitions. [2022-07-19 21:25:50,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 452 transitions, 4493 flow [2022-07-19 21:25:50,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 452 transitions, 4448 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:50,847 INFO L242 Difference]: Finished difference. Result has 272 places, 385 transitions, 3377 flow [2022-07-19 21:25:50,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3377, PETRI_PLACES=272, PETRI_TRANSITIONS=385} [2022-07-19 21:25:50,849 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 61 predicate places. [2022-07-19 21:25:50,849 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 385 transitions, 3377 flow [2022-07-19 21:25:50,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:50,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:50,850 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] [2022-07-19 21:25:50,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:25:50,850 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1753285481, now seen corresponding path program 3 times [2022-07-19 21:25:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:50,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427134002] [2022-07-19 21:25:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:50,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:50,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427134002] [2022-07-19 21:25:50,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427134002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:50,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:50,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:50,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968281042] [2022-07-19 21:25:50,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:50,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:50,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:50,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:50,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:50,947 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:50,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 385 transitions, 3377 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:50,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:50,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:50,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:52,052 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][202], [Black: 319#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 317#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, Black: 327#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 345#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), 106#L50-18true, Black: 334#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 332#true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 335#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 318#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), Black: 346#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 344#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 228#true, 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 282#true, Black: 286#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 284#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 43#L44-8true, Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), 57#L74-4true, Black: 308#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 307#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_5~0 (* (- 256) (div ~sort_label_is_null_5~0 256))) 0)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 305#true, 355#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-07-19 21:25:52,052 INFO L384 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-07-19 21:25:52,052 INFO L387 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-07-19 21:25:52,052 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-07-19 21:25:52,052 INFO L387 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-07-19 21:25:52,253 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][202], [Black: 319#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 317#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, Black: 327#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 345#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), 87#L75-2true, 106#L50-18true, Black: 334#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 332#true, Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 335#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 318#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), Black: 346#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 228#true, Black: 344#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 282#true, Black: 286#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 284#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), Black: 308#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 307#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_5~0 (* (- 256) (div ~sort_label_is_null_5~0 256))) 0)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 305#true, 355#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-07-19 21:25:52,253 INFO L384 tUnfolder$Statistics]: this new event has 106 ancestors and is cut-off event [2022-07-19 21:25:52,254 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:52,254 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:25:52,254 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:52,467 INFO L129 PetriNetUnfolder]: 1649/13657 cut-off events. [2022-07-19 21:25:52,468 INFO L130 PetriNetUnfolder]: For 25409/25986 co-relation queries the response was YES. [2022-07-19 21:25:52,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27606 conditions, 13657 events. 1649/13657 cut-off events. For 25409/25986 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 186480 event pairs, 353 based on Foata normal form. 129/13091 useless extension candidates. Maximal degree in co-relation 24773. Up to 1124 conditions per place. [2022-07-19 21:25:52,556 INFO L132 encePairwiseOnDemand]: 216/232 looper letters, 191 selfloop transitions, 80 changer transitions 5/464 dead transitions. [2022-07-19 21:25:52,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 464 transitions, 4806 flow [2022-07-19 21:25:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:52,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1050 transitions. [2022-07-19 21:25:52,559 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9051724137931034 [2022-07-19 21:25:52,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1050 transitions. [2022-07-19 21:25:52,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1050 transitions. [2022-07-19 21:25:52,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:52,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1050 transitions. [2022-07-19 21:25:52,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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) [2022-07-19 21:25:52,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:52,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:52,565 INFO L186 Difference]: Start difference. First operand has 272 places, 385 transitions, 3377 flow. Second operand 5 states and 1050 transitions. [2022-07-19 21:25:52,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 464 transitions, 4806 flow [2022-07-19 21:25:52,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 464 transitions, 4780 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:52,656 INFO L242 Difference]: Finished difference. Result has 279 places, 409 transitions, 4035 flow [2022-07-19 21:25:52,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4035, PETRI_PLACES=279, PETRI_TRANSITIONS=409} [2022-07-19 21:25:52,657 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 68 predicate places. [2022-07-19 21:25:52,657 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 409 transitions, 4035 flow [2022-07-19 21:25:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:52,658 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:52,658 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] [2022-07-19 21:25:52,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:25:52,659 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash -376277763, now seen corresponding path program 4 times [2022-07-19 21:25:52,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:52,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556811252] [2022-07-19 21:25:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:52,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:52,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556811252] [2022-07-19 21:25:52,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556811252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:52,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:52,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:52,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453998651] [2022-07-19 21:25:52,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:52,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:52,737 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:52,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 409 transitions, 4035 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:52,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:52,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:52,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,975 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][218], [Black: 319#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 317#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 345#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 327#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 87#L75-2true, 365#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), 106#L50-18true, Black: 334#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 332#true, Black: 335#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 318#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), Black: 346#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 344#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 228#true, 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 282#true, Black: 286#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 284#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 353#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 354#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 351#true, Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), Black: 308#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 307#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_5~0 (* (- 256) (div ~sort_label_is_null_5~0 256))) 0)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 305#true, 355#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-07-19 21:25:53,975 INFO L384 tUnfolder$Statistics]: this new event has 106 ancestors and is cut-off event [2022-07-19 21:25:53,976 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:53,976 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:53,976 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:54,077 INFO L129 PetriNetUnfolder]: 1596/13149 cut-off events. [2022-07-19 21:25:54,078 INFO L130 PetriNetUnfolder]: For 29800/30371 co-relation queries the response was YES. [2022-07-19 21:25:54,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27762 conditions, 13149 events. 1596/13149 cut-off events. For 29800/30371 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 177372 event pairs, 397 based on Foata normal form. 122/12586 useless extension candidates. Maximal degree in co-relation 26579. Up to 1096 conditions per place. [2022-07-19 21:25:54,203 INFO L132 encePairwiseOnDemand]: 216/232 looper letters, 212 selfloop transitions, 87 changer transitions 5/492 dead transitions. [2022-07-19 21:25:54,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 492 transitions, 5690 flow [2022-07-19 21:25:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1051 transitions. [2022-07-19 21:25:54,206 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9060344827586206 [2022-07-19 21:25:54,206 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1051 transitions. [2022-07-19 21:25:54,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1051 transitions. [2022-07-19 21:25:54,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:54,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1051 transitions. [2022-07-19 21:25:54,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.2) internal successors, (1051), 5 states have internal predecessors, (1051), 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) [2022-07-19 21:25:54,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:54,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:54,212 INFO L186 Difference]: Start difference. First operand has 279 places, 409 transitions, 4035 flow. Second operand 5 states and 1051 transitions. [2022-07-19 21:25:54,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 492 transitions, 5690 flow [2022-07-19 21:25:54,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 492 transitions, 5686 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:54,331 INFO L242 Difference]: Finished difference. Result has 287 places, 438 transitions, 4927 flow [2022-07-19 21:25:54,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=4007, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4927, PETRI_PLACES=287, PETRI_TRANSITIONS=438} [2022-07-19 21:25:54,332 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 76 predicate places. [2022-07-19 21:25:54,332 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 438 transitions, 4927 flow [2022-07-19 21:25:54,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:54,332 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:54,332 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] [2022-07-19 21:25:54,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:25:54,333 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:54,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash -2119521659, now seen corresponding path program 5 times [2022-07-19 21:25:54,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:54,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346887085] [2022-07-19 21:25:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:54,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:54,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346887085] [2022-07-19 21:25:54,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346887085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:54,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:54,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592927306] [2022-07-19 21:25:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:54,397 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:54,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 438 transitions, 4927 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:54,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:54,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:54,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,881 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][217], [Black: 319#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 317#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, Black: 327#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 345#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), 87#L75-2true, 365#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), 106#L50-18true, Black: 334#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= ~sort_label_is_null_5~0 (* 256 (div 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~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 351#true, Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 361#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), Black: 363#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 364#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 308#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 307#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_5~0 (* (- 256) (div ~sort_label_is_null_5~0 256))) 0)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 305#true, 355#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-07-19 21:25:55,882 INFO L384 tUnfolder$Statistics]: this new event has 106 ancestors and is cut-off event [2022-07-19 21:25:55,882 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:55,882 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:55,882 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:56,017 INFO L129 PetriNetUnfolder]: 1565/13018 cut-off events. [2022-07-19 21:25:56,017 INFO L130 PetriNetUnfolder]: For 35831/36390 co-relation queries the response was YES. [2022-07-19 21:25:56,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28355 conditions, 13018 events. 1565/13018 cut-off events. For 35831/36390 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 175327 event pairs, 363 based on Foata normal form. 142/12477 useless extension candidates. Maximal degree in co-relation 27257. Up to 1370 conditions per place. [2022-07-19 21:25:56,159 INFO L132 encePairwiseOnDemand]: 215/232 looper letters, 230 selfloop transitions, 107 changer transitions 8/533 dead transitions. [2022-07-19 21:25:56,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 533 transitions, 6950 flow [2022-07-19 21:25:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:25:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:25:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1251 transitions. [2022-07-19 21:25:56,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8987068965517241 [2022-07-19 21:25:56,162 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1251 transitions. [2022-07-19 21:25:56,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1251 transitions. [2022-07-19 21:25:56,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:56,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1251 transitions. [2022-07-19 21:25:56,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.5) internal successors, (1251), 6 states have internal predecessors, (1251), 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) [2022-07-19 21:25:56,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 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) [2022-07-19 21:25:56,169 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 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) [2022-07-19 21:25:56,169 INFO L186 Difference]: Start difference. First operand has 287 places, 438 transitions, 4927 flow. Second operand 6 states and 1251 transitions. [2022-07-19 21:25:56,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 533 transitions, 6950 flow [2022-07-19 21:25:56,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 533 transitions, 6944 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:56,306 INFO L242 Difference]: Finished difference. Result has 297 places, 473 transitions, 6074 flow [2022-07-19 21:25:56,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=4857, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6074, PETRI_PLACES=297, PETRI_TRANSITIONS=473} [2022-07-19 21:25:56,307 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 86 predicate places. [2022-07-19 21:25:56,307 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 473 transitions, 6074 flow [2022-07-19 21:25:56,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:56,308 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:56,308 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] [2022-07-19 21:25:56,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:25:56,308 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:56,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:56,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1576377401, now seen corresponding path program 7 times [2022-07-19 21:25:56,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:56,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350237130] [2022-07-19 21:25:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:56,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350237130] [2022-07-19 21:25:56,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350237130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20010877] [2022-07-19 21:25:56,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:56,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:56,403 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:56,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 473 transitions, 6074 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:56,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:56,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:58,082 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][226], [Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), 66#L56-18true, 365#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 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~sort_label_is_null_5~0 256)))))), 375#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 353#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 354#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 351#true, Black: 361#true, Black: 363#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 364#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 373#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 377#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 371#true, Black: 374#(or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))]) [2022-07-19 21:25:58,083 INFO L384 tUnfolder$Statistics]: this new event has 106 ancestors and is cut-off event [2022-07-19 21:25:58,083 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:58,083 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:25:58,083 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:25:58,229 INFO L129 PetriNetUnfolder]: 1582/13472 cut-off events. [2022-07-19 21:25:58,229 INFO L130 PetriNetUnfolder]: For 40424/40978 co-relation queries the response was YES. [2022-07-19 21:25:58,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30076 conditions, 13472 events. 1582/13472 cut-off events. For 40424/40978 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 181807 event pairs, 444 based on Foata normal form. 110/12846 useless extension candidates. Maximal degree in co-relation 28974. Up to 1286 conditions per place. [2022-07-19 21:25:58,393 INFO L132 encePairwiseOnDemand]: 217/232 looper letters, 244 selfloop transitions, 88 changer transitions 4/524 dead transitions. [2022-07-19 21:25:58,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 524 transitions, 7331 flow [2022-07-19 21:25:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:58,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1043 transitions. [2022-07-19 21:25:58,397 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8991379310344828 [2022-07-19 21:25:58,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1043 transitions. [2022-07-19 21:25:58,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1043 transitions. [2022-07-19 21:25:58,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:58,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1043 transitions. [2022-07-19 21:25:58,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.6) internal successors, (1043), 5 states have internal predecessors, (1043), 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) [2022-07-19 21:25:58,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:58,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:25:58,403 INFO L186 Difference]: Start difference. First operand has 297 places, 473 transitions, 6074 flow. Second operand 5 states and 1043 transitions. [2022-07-19 21:25:58,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 524 transitions, 7331 flow [2022-07-19 21:25:58,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 524 transitions, 7329 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:58,573 INFO L242 Difference]: Finished difference. Result has 303 places, 481 transitions, 6530 flow [2022-07-19 21:25:58,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=6072, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6530, PETRI_PLACES=303, PETRI_TRANSITIONS=481} [2022-07-19 21:25:58,574 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 92 predicate places. [2022-07-19 21:25:58,575 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 481 transitions, 6530 flow [2022-07-19 21:25:58,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:58,575 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:58,575 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] [2022-07-19 21:25:58,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:25:58,576 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:58,576 INFO L85 PathProgramCache]: Analyzing trace with hash -91452713, now seen corresponding path program 6 times [2022-07-19 21:25:58,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:58,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249185963] [2022-07-19 21:25:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:58,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:58,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249185963] [2022-07-19 21:25:58,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249185963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:58,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:58,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:58,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707191419] [2022-07-19 21:25:58,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:58,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:58,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:58,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:58,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:58,661 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:25:58,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 481 transitions, 6530 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:25:58,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:58,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:25:58,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:00,300 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][216], [Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), Black: 388#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), 66#L56-18true, 365#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 318#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), 228#true, 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 282#true, Black: 286#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 284#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), 389#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 308#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 307#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_5~0 (* (- 256) (div ~sort_label_is_null_5~0 256))) 0)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 305#true, 355#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 319#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 317#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 397#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 327#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 345#(or (and (= 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256 (div ~sort_label_is_null_5~0 256)))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 375#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 353#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 354#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 351#true, Black: 361#true, Black: 363#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 364#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 373#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 377#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 371#true, Black: 374#(or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:00,300 INFO L384 tUnfolder$Statistics]: this new event has 106 ancestors and is cut-off event [2022-07-19 21:26:00,300 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:00,300 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:26:00,300 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:00,422 INFO L129 PetriNetUnfolder]: 1617/13927 cut-off events. [2022-07-19 21:26:00,422 INFO L130 PetriNetUnfolder]: For 45557/46160 co-relation queries the response was YES. [2022-07-19 21:26:00,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31214 conditions, 13927 events. 1617/13927 cut-off events. For 45557/46160 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 189491 event pairs, 468 based on Foata normal form. 116/13298 useless extension candidates. Maximal degree in co-relation 30102. Up to 1365 conditions per place. [2022-07-19 21:26:00,566 INFO L132 encePairwiseOnDemand]: 217/232 looper letters, 233 selfloop transitions, 109 changer transitions 3/533 dead transitions. [2022-07-19 21:26:00,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 533 transitions, 7905 flow [2022-07-19 21:26:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1043 transitions. [2022-07-19 21:26:00,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8991379310344828 [2022-07-19 21:26:00,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1043 transitions. [2022-07-19 21:26:00,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1043 transitions. [2022-07-19 21:26:00,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:00,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1043 transitions. [2022-07-19 21:26:00,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.6) internal successors, (1043), 5 states have internal predecessors, (1043), 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) [2022-07-19 21:26:00,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:00,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:00,573 INFO L186 Difference]: Start difference. First operand has 303 places, 481 transitions, 6530 flow. Second operand 5 states and 1043 transitions. [2022-07-19 21:26:00,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 533 transitions, 7905 flow [2022-07-19 21:26:00,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 533 transitions, 7764 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:00,771 INFO L242 Difference]: Finished difference. Result has 307 places, 492 transitions, 7050 flow [2022-07-19 21:26:00,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=6406, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7050, PETRI_PLACES=307, PETRI_TRANSITIONS=492} [2022-07-19 21:26:00,773 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 96 predicate places. [2022-07-19 21:26:00,773 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 492 transitions, 7050 flow [2022-07-19 21:26:00,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:00,773 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,773 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] [2022-07-19 21:26:00,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:26:00,774 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:00,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1441967109, now seen corresponding path program 7 times [2022-07-19 21:26:00,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385570387] [2022-07-19 21:26:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:00,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385570387] [2022-07-19 21:26:00,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385570387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:00,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779900039] [2022-07-19 21:26:00,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:00,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:00,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:00,888 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:00,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 492 transitions, 7050 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:00,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:00,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:02,476 INFO L129 PetriNetUnfolder]: 1544/12777 cut-off events. [2022-07-19 21:26:02,477 INFO L130 PetriNetUnfolder]: For 53254/53870 co-relation queries the response was YES. [2022-07-19 21:26:02,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29893 conditions, 12777 events. 1544/12777 cut-off events. For 53254/53870 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 173350 event pairs, 413 based on Foata normal form. 155/12300 useless extension candidates. Maximal degree in co-relation 28770. Up to 966 conditions per place. [2022-07-19 21:26:02,625 INFO L132 encePairwiseOnDemand]: 214/232 looper letters, 305 selfloop transitions, 107 changer transitions 8/608 dead transitions. [2022-07-19 21:26:02,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 608 transitions, 9255 flow [2022-07-19 21:26:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:26:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:26:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1468 transitions. [2022-07-19 21:26:02,629 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9039408866995073 [2022-07-19 21:26:02,629 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1468 transitions. [2022-07-19 21:26:02,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1468 transitions. [2022-07-19 21:26:02,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:02,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1468 transitions. [2022-07-19 21:26:02,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.71428571428572) internal successors, (1468), 7 states have internal predecessors, (1468), 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) [2022-07-19 21:26:02,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:26:02,635 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:26:02,635 INFO L186 Difference]: Start difference. First operand has 307 places, 492 transitions, 7050 flow. Second operand 7 states and 1468 transitions. [2022-07-19 21:26:02,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 608 transitions, 9255 flow [2022-07-19 21:26:02,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 608 transitions, 9123 flow, removed 13 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:02,806 INFO L242 Difference]: Finished difference. Result has 316 places, 508 transitions, 7484 flow [2022-07-19 21:26:02,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=6670, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7484, PETRI_PLACES=316, PETRI_TRANSITIONS=508} [2022-07-19 21:26:02,807 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 105 predicate places. [2022-07-19 21:26:02,807 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 508 transitions, 7484 flow [2022-07-19 21:26:02,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:02,808 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:02,808 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] [2022-07-19 21:26:02,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:26:02,808 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1555853255, now seen corresponding path program 8 times [2022-07-19 21:26:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:02,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957836014] [2022-07-19 21:26:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:02,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:02,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:02,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957836014] [2022-07-19 21:26:02,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957836014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:02,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:02,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110073954] [2022-07-19 21:26:02,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:02,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:02,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:02,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:02,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:02,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:02,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 508 transitions, 7484 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:02,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:02,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:02,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,312 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][229], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), Black: 388#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), 66#L56-18true, Black: 395#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 396#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 365#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 420#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 318#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), 228#true, Black: 406#(and (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 411#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), Black: 282#true, Black: 405#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 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~sort_label_is_null_3~0) 0)) (or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 371#true, Black: 374#(or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:04,668 INFO L384 tUnfolder$Statistics]: this new event has 128 ancestors and is cut-off event [2022-07-19 21:26:04,668 INFO L387 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2022-07-19 21:26:04,668 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:04,668 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:04,696 INFO L129 PetriNetUnfolder]: 1629/14596 cut-off events. [2022-07-19 21:26:04,696 INFO L130 PetriNetUnfolder]: For 54490/55103 co-relation queries the response was YES. [2022-07-19 21:26:04,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33288 conditions, 14596 events. 1629/14596 cut-off events. For 54490/55103 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 199946 event pairs, 391 based on Foata normal form. 127/13975 useless extension candidates. Maximal degree in co-relation 32132. Up to 1566 conditions per place. [2022-07-19 21:26:04,871 INFO L132 encePairwiseOnDemand]: 220/232 looper letters, 303 selfloop transitions, 60 changer transitions 2/553 dead transitions. [2022-07-19 21:26:04,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 553 transitions, 8757 flow [2022-07-19 21:26:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1037 transitions. [2022-07-19 21:26:04,874 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8939655172413793 [2022-07-19 21:26:04,874 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1037 transitions. [2022-07-19 21:26:04,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1037 transitions. [2022-07-19 21:26:04,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1037 transitions. [2022-07-19 21:26:04,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.4) internal successors, (1037), 5 states have internal predecessors, (1037), 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) [2022-07-19 21:26:04,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:04,879 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:04,879 INFO L186 Difference]: Start difference. First operand has 316 places, 508 transitions, 7484 flow. Second operand 5 states and 1037 transitions. [2022-07-19 21:26:04,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 553 transitions, 8757 flow [2022-07-19 21:26:05,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 553 transitions, 8745 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:05,134 INFO L242 Difference]: Finished difference. Result has 322 places, 514 transitions, 7779 flow [2022-07-19 21:26:05,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=7472, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7779, PETRI_PLACES=322, PETRI_TRANSITIONS=514} [2022-07-19 21:26:05,135 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 111 predicate places. [2022-07-19 21:26:05,135 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 514 transitions, 7779 flow [2022-07-19 21:26:05,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:05,136 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:05,136 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] [2022-07-19 21:26:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:26:05,136 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash 3217273, now seen corresponding path program 9 times [2022-07-19 21:26:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:05,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007327711] [2022-07-19 21:26:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:05,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007327711] [2022-07-19 21:26:05,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007327711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:05,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999819004] [2022-07-19 21:26:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:05,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:05,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:05,217 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:05,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 514 transitions, 7779 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:05,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:05,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:06,697 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][234], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 237#(and (= ~result_8~0 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_7~0 0)), Black: 388#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), 66#L56-18true, Black: 395#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 396#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 365#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 268#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 266#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 267#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 420#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 273#(and (or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), Black: 264#true, 318#(or (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))))), 228#true, 285#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 406#(and (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), Black: 411#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), Black: 282#true, Black: 405#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 286#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 402#true, Black: 284#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 421#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), Black: 422#(and (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), 43#L44-8true, Black: 298#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 292#true, Black: 295#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))), 57#L74-4true, Black: 308#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 294#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 307#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= (+ ~sort_label_is_null_5~0 (* (- 256) (div ~sort_label_is_null_5~0 256))) 0)) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 305#true, 355#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 319#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 317#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 327#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 345#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), 106#L50-18true, Black: 334#(or (not (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 332#true, Black: 335#(or (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), 430#(= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 346#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 344#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 375#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 353#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 354#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 351#true, Black: 361#true, Black: 363#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 364#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 373#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 377#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 371#true, Black: 374#(or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:06,698 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is not cut-off event [2022-07-19 21:26:06,698 INFO L387 tUnfolder$Statistics]: existing Event has 94 ancestors and is not cut-off event [2022-07-19 21:26:06,698 INFO L387 tUnfolder$Statistics]: existing Event has 94 ancestors and is not cut-off event [2022-07-19 21:26:06,698 INFO L387 tUnfolder$Statistics]: existing Event has 92 ancestors and is not cut-off event [2022-07-19 21:26:07,016 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][234], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 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(* (div ~sort_label_is_null_1~0 256) (- 256))) 0), Black: 346#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 344#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 375#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 353#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 354#(or (and (= 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256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 371#true, Black: 374#(or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:07,017 INFO L384 tUnfolder$Statistics]: this new event has 128 ancestors and is cut-off event [2022-07-19 21:26:07,017 INFO L387 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2022-07-19 21:26:07,017 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:07,017 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:07,039 INFO L129 PetriNetUnfolder]: 1635/14623 cut-off events. [2022-07-19 21:26:07,040 INFO L130 PetriNetUnfolder]: For 59630/60266 co-relation queries the response was YES. [2022-07-19 21:26:07,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33640 conditions, 14623 events. 1635/14623 cut-off events. For 59630/60266 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 200702 event pairs, 468 based on Foata normal form. 135/14013 useless extension candidates. Maximal degree in co-relation 32479. Up to 1292 conditions per place. [2022-07-19 21:26:07,173 INFO L132 encePairwiseOnDemand]: 219/232 looper letters, 263 selfloop transitions, 99 changer transitions 0/550 dead transitions. [2022-07-19 21:26:07,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 550 transitions, 8927 flow [2022-07-19 21:26:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1037 transitions. [2022-07-19 21:26:07,179 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8939655172413793 [2022-07-19 21:26:07,179 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1037 transitions. [2022-07-19 21:26:07,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1037 transitions. [2022-07-19 21:26:07,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:07,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1037 transitions. [2022-07-19 21:26:07,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.4) internal successors, (1037), 5 states have internal predecessors, (1037), 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) [2022-07-19 21:26:07,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:07,211 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:07,212 INFO L186 Difference]: Start difference. First operand has 322 places, 514 transitions, 7779 flow. Second operand 5 states and 1037 transitions. [2022-07-19 21:26:07,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 550 transitions, 8927 flow [2022-07-19 21:26:07,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 550 transitions, 8863 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:07,592 INFO L242 Difference]: Finished difference. Result has 327 places, 520 transitions, 8224 flow [2022-07-19 21:26:07,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=7690, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8224, PETRI_PLACES=327, PETRI_TRANSITIONS=520} [2022-07-19 21:26:07,602 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 116 predicate places. [2022-07-19 21:26:07,602 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 520 transitions, 8224 flow [2022-07-19 21:26:07,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:07,602 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:07,603 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] [2022-07-19 21:26:07,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:26:07,603 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:07,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:07,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1858215399, now seen corresponding path program 10 times [2022-07-19 21:26:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:07,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871041304] [2022-07-19 21:26:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:07,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871041304] [2022-07-19 21:26:07,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871041304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:07,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:07,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538293487] [2022-07-19 21:26:07,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:07,767 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:07,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 520 transitions, 8224 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:07,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:07,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:07,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:09,248 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][222], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 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~sort_label_is_null_3~0) 0)) (or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 371#true, Black: 374#(or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:09,248 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is not cut-off event [2022-07-19 21:26:09,248 INFO L387 tUnfolder$Statistics]: existing Event has 94 ancestors and is not cut-off event [2022-07-19 21:26:09,248 INFO L387 tUnfolder$Statistics]: existing Event has 94 ancestors and is not cut-off event [2022-07-19 21:26:09,248 INFO L387 tUnfolder$Statistics]: existing Event has 92 ancestors and is not cut-off event [2022-07-19 21:26:09,583 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 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~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 375#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 353#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 354#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 351#true, Black: 361#true, Black: 363#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 364#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 373#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 377#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 371#true, Black: 374#(or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:09,583 INFO L384 tUnfolder$Statistics]: this new event has 128 ancestors and is cut-off event [2022-07-19 21:26:09,583 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:09,583 INFO L387 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2022-07-19 21:26:09,583 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:09,609 INFO L129 PetriNetUnfolder]: 1632/14347 cut-off events. [2022-07-19 21:26:09,609 INFO L130 PetriNetUnfolder]: For 61419/62054 co-relation queries the response was YES. [2022-07-19 21:26:09,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33642 conditions, 14347 events. 1632/14347 cut-off events. For 61419/62054 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 195560 event pairs, 428 based on Foata normal form. 131/13724 useless extension candidates. Maximal degree in co-relation 32462. Up to 1524 conditions per place. [2022-07-19 21:26:09,805 INFO L132 encePairwiseOnDemand]: 220/232 looper letters, 278 selfloop transitions, 80 changer transitions 1/547 dead transitions. [2022-07-19 21:26:09,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 547 transitions, 9192 flow [2022-07-19 21:26:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1035 transitions. [2022-07-19 21:26:09,808 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8922413793103449 [2022-07-19 21:26:09,808 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1035 transitions. [2022-07-19 21:26:09,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1035 transitions. [2022-07-19 21:26:09,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:09,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1035 transitions. [2022-07-19 21:26:09,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 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) [2022-07-19 21:26:09,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:09,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:09,814 INFO L186 Difference]: Start difference. First operand has 327 places, 520 transitions, 8224 flow. Second operand 5 states and 1035 transitions. [2022-07-19 21:26:09,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 547 transitions, 9192 flow [2022-07-19 21:26:10,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 547 transitions, 9118 flow, removed 11 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:10,108 INFO L242 Difference]: Finished difference. Result has 331 places, 519 transitions, 8361 flow [2022-07-19 21:26:10,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=8076, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8361, PETRI_PLACES=331, PETRI_TRANSITIONS=519} [2022-07-19 21:26:10,109 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 120 predicate places. [2022-07-19 21:26:10,109 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 519 transitions, 8361 flow [2022-07-19 21:26:10,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:10,110 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:10,110 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] [2022-07-19 21:26:10,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:26:10,110 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:10,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1894845049, now seen corresponding path program 8 times [2022-07-19 21:26:10,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:10,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933969029] [2022-07-19 21:26:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:10,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:10,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933969029] [2022-07-19 21:26:10,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933969029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:10,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:10,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090097932] [2022-07-19 21:26:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:10,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:10,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:10,192 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:10,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 519 transitions, 8361 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:10,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:10,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:10,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:11,608 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L56-17-->L56-18: Formula: (= v_~result_8~0_1 |v_thread3Thread1of1ForFork2_#t~ite12#1_3|) InVars {thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite12#1=|v_thread3Thread1of1ForFork2_#t~ite12#1_3|, ~result_8~0=v_~result_8~0_1} AuxVars[] AssignedVars[~result_8~0][242], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 231#(= ~result_7~0 0), Black: 233#(and (= ~result_8~0 0) (= ~result_7~0 0)), Black: 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~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0)), Black: 346#(and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 344#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), 270#(and (= (+ ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) (- 256))) 0) (or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256)))))), 375#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 353#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 354#(or (and (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 351#true, Black: 361#true, Black: 363#(or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), Black: 364#(or (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0) (not (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))))), 309#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0), Black: 373#(or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)), Black: 377#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)) (or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))), Black: 371#true, Black: 374#(or (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)) (= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:12,095 INFO L384 tUnfolder$Statistics]: this new event has 128 ancestors and is cut-off event [2022-07-19 21:26:12,095 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:12,096 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:12,096 INFO L387 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2022-07-19 21:26:12,117 INFO L129 PetriNetUnfolder]: 1646/14788 cut-off events. [2022-07-19 21:26:12,117 INFO L130 PetriNetUnfolder]: For 66994/67631 co-relation queries the response was YES. [2022-07-19 21:26:12,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34407 conditions, 14788 events. 1646/14788 cut-off events. For 66994/67631 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 203456 event pairs, 360 based on Foata normal form. 136/14191 useless extension candidates. Maximal degree in co-relation 33077. Up to 1287 conditions per place. [2022-07-19 21:26:12,237 INFO L132 encePairwiseOnDemand]: 217/232 looper letters, 310 selfloop transitions, 92 changer transitions 4/594 dead transitions. [2022-07-19 21:26:12,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 594 transitions, 10422 flow [2022-07-19 21:26:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1041 transitions. [2022-07-19 21:26:12,239 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8974137931034483 [2022-07-19 21:26:12,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1041 transitions. [2022-07-19 21:26:12,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1041 transitions. [2022-07-19 21:26:12,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:12,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1041 transitions. [2022-07-19 21:26:12,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2022-07-19 21:26:12,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:12,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:12,243 INFO L186 Difference]: Start difference. First operand has 331 places, 519 transitions, 8361 flow. Second operand 5 states and 1041 transitions. [2022-07-19 21:26:12,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 594 transitions, 10422 flow [2022-07-19 21:26:12,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 594 transitions, 10317 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:12,542 INFO L242 Difference]: Finished difference. Result has 336 places, 541 transitions, 9175 flow [2022-07-19 21:26:12,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=8260, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9175, PETRI_PLACES=336, PETRI_TRANSITIONS=541} [2022-07-19 21:26:12,543 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 125 predicate places. [2022-07-19 21:26:12,543 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 541 transitions, 9175 flow [2022-07-19 21:26:12,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:12,544 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:12,544 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] [2022-07-19 21:26:12,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:26:12,544 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:12,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:12,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1780670687, now seen corresponding path program 9 times [2022-07-19 21:26:12,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:12,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776844262] [2022-07-19 21:26:12,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:12,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:12,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:12,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776844262] [2022-07-19 21:26:12,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776844262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:12,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:12,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278695167] [2022-07-19 21:26:12,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:12,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:12,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:12,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:12,613 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:12,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 541 transitions, 9175 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:12,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:12,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:12,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:14,533 INFO L129 PetriNetUnfolder]: 1562/13730 cut-off events. [2022-07-19 21:26:14,534 INFO L130 PetriNetUnfolder]: For 69193/69820 co-relation queries the response was YES. [2022-07-19 21:26:14,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33121 conditions, 13730 events. 1562/13730 cut-off events. For 69193/69820 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 186257 event pairs, 346 based on Foata normal form. 140/13166 useless extension candidates. Maximal degree in co-relation 32014. Up to 1404 conditions per place. [2022-07-19 21:26:14,708 INFO L132 encePairwiseOnDemand]: 219/232 looper letters, 345 selfloop transitions, 63 changer transitions 2/598 dead transitions. [2022-07-19 21:26:14,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 598 transitions, 10705 flow [2022-07-19 21:26:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:14,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1042 transitions. [2022-07-19 21:26:14,710 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8982758620689655 [2022-07-19 21:26:14,710 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1042 transitions. [2022-07-19 21:26:14,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1042 transitions. [2022-07-19 21:26:14,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:14,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1042 transitions. [2022-07-19 21:26:14,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.4) internal successors, (1042), 5 states have internal predecessors, (1042), 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) [2022-07-19 21:26:14,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:14,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:14,713 INFO L186 Difference]: Start difference. First operand has 336 places, 541 transitions, 9175 flow. Second operand 5 states and 1042 transitions. [2022-07-19 21:26:14,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 598 transitions, 10705 flow [2022-07-19 21:26:15,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 598 transitions, 10669 flow, removed 18 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:15,089 INFO L242 Difference]: Finished difference. Result has 343 places, 546 transitions, 9424 flow [2022-07-19 21:26:15,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=8995, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9424, PETRI_PLACES=343, PETRI_TRANSITIONS=546} [2022-07-19 21:26:15,090 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 132 predicate places. [2022-07-19 21:26:15,090 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 546 transitions, 9424 flow [2022-07-19 21:26:15,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:15,090 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:15,091 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] [2022-07-19 21:26:15,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:26:15,091 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:15,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash -93192357, now seen corresponding path program 10 times [2022-07-19 21:26:15,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:15,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010114417] [2022-07-19 21:26:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:15,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:15,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:15,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010114417] [2022-07-19 21:26:15,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010114417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:15,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:15,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:15,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488109039] [2022-07-19 21:26:15,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:15,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:15,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:15,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:15,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:15,164 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:15,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 546 transitions, 9424 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:15,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:15,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:15,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:17,382 INFO L129 PetriNetUnfolder]: 1591/13993 cut-off events. [2022-07-19 21:26:17,382 INFO L130 PetriNetUnfolder]: For 71190/71822 co-relation queries the response was YES. [2022-07-19 21:26:17,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34024 conditions, 13993 events. 1591/13993 cut-off events. For 71190/71822 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 190485 event pairs, 351 based on Foata normal form. 119/13392 useless extension candidates. Maximal degree in co-relation 32853. Up to 1404 conditions per place. [2022-07-19 21:26:17,507 INFO L132 encePairwiseOnDemand]: 220/232 looper letters, 343 selfloop transitions, 70 changer transitions 2/603 dead transitions. [2022-07-19 21:26:17,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 603 transitions, 10947 flow [2022-07-19 21:26:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1041 transitions. [2022-07-19 21:26:17,509 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8974137931034483 [2022-07-19 21:26:17,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1041 transitions. [2022-07-19 21:26:17,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1041 transitions. [2022-07-19 21:26:17,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:17,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1041 transitions. [2022-07-19 21:26:17,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2022-07-19 21:26:17,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:17,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:17,511 INFO L186 Difference]: Start difference. First operand has 343 places, 546 transitions, 9424 flow. Second operand 5 states and 1041 transitions. [2022-07-19 21:26:17,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 603 transitions, 10947 flow [2022-07-19 21:26:17,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 603 transitions, 10881 flow, removed 18 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:17,844 INFO L242 Difference]: Finished difference. Result has 347 places, 549 transitions, 9542 flow [2022-07-19 21:26:17,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=9286, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9542, PETRI_PLACES=347, PETRI_TRANSITIONS=549} [2022-07-19 21:26:17,845 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 136 predicate places. [2022-07-19 21:26:17,845 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 549 transitions, 9542 flow [2022-07-19 21:26:17,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:17,845 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:17,846 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] [2022-07-19 21:26:17,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:26:17,846 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash -788473097, now seen corresponding path program 11 times [2022-07-19 21:26:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:17,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600510373] [2022-07-19 21:26:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:17,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:17,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600510373] [2022-07-19 21:26:17,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600510373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:17,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:17,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:17,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635310272] [2022-07-19 21:26:17,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:17,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:17,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:17,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:17,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:17,911 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:17,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 549 transitions, 9542 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:17,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:17,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:17,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:20,000 INFO L129 PetriNetUnfolder]: 1578/13797 cut-off events. [2022-07-19 21:26:20,001 INFO L130 PetriNetUnfolder]: For 75278/75921 co-relation queries the response was YES. [2022-07-19 21:26:20,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34058 conditions, 13797 events. 1578/13797 cut-off events. For 75278/75921 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 188841 event pairs, 384 based on Foata normal form. 114/13222 useless extension candidates. Maximal degree in co-relation 32645. Up to 1059 conditions per place. [2022-07-19 21:26:20,328 INFO L132 encePairwiseOnDemand]: 217/232 looper letters, 303 selfloop transitions, 105 changer transitions 2/598 dead transitions. [2022-07-19 21:26:20,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 598 transitions, 11008 flow [2022-07-19 21:26:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1050 transitions. [2022-07-19 21:26:20,330 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9051724137931034 [2022-07-19 21:26:20,330 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1050 transitions. [2022-07-19 21:26:20,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1050 transitions. [2022-07-19 21:26:20,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:20,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1050 transitions. [2022-07-19 21:26:20,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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) [2022-07-19 21:26:20,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:20,334 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 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) [2022-07-19 21:26:20,334 INFO L186 Difference]: Start difference. First operand has 347 places, 549 transitions, 9542 flow. Second operand 5 states and 1050 transitions. [2022-07-19 21:26:20,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 598 transitions, 11008 flow [2022-07-19 21:26:20,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 598 transitions, 10927 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:20,704 INFO L242 Difference]: Finished difference. Result has 350 places, 552 transitions, 9786 flow [2022-07-19 21:26:20,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=9425, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9786, PETRI_PLACES=350, PETRI_TRANSITIONS=552} [2022-07-19 21:26:20,705 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 139 predicate places. [2022-07-19 21:26:20,705 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 552 transitions, 9786 flow [2022-07-19 21:26:20,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:20,705 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:20,705 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] [2022-07-19 21:26:20,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:26:20,706 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2014304507, now seen corresponding path program 12 times [2022-07-19 21:26:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:20,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546314753] [2022-07-19 21:26:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:20,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:20,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:20,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546314753] [2022-07-19 21:26:20,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546314753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:20,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:20,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:20,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324145238] [2022-07-19 21:26:20,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:20,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:20,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:20,787 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:20,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 552 transitions, 9786 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:20,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:20,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:20,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:23,205 INFO L129 PetriNetUnfolder]: 1579/13675 cut-off events. [2022-07-19 21:26:23,205 INFO L130 PetriNetUnfolder]: For 75564/76216 co-relation queries the response was YES. [2022-07-19 21:26:23,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34114 conditions, 13675 events. 1579/13675 cut-off events. For 75564/76216 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 187486 event pairs, 432 based on Foata normal form. 110/13097 useless extension candidates. Maximal degree in co-relation 32701. Up to 1471 conditions per place. [2022-07-19 21:26:23,352 INFO L132 encePairwiseOnDemand]: 216/232 looper letters, 320 selfloop transitions, 101 changer transitions 0/609 dead transitions. [2022-07-19 21:26:23,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 609 transitions, 11187 flow [2022-07-19 21:26:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:26:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:26:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1450 transitions. [2022-07-19 21:26:23,354 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2022-07-19 21:26:23,354 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1450 transitions. [2022-07-19 21:26:23,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1450 transitions. [2022-07-19 21:26:23,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:23,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1450 transitions. [2022-07-19 21:26:23,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 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) [2022-07-19 21:26:23,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:26:23,358 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:26:23,358 INFO L186 Difference]: Start difference. First operand has 350 places, 552 transitions, 9786 flow. Second operand 7 states and 1450 transitions. [2022-07-19 21:26:23,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 609 transitions, 11187 flow [2022-07-19 21:26:23,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 609 transitions, 11010 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:23,729 INFO L242 Difference]: Finished difference. Result has 354 places, 556 transitions, 9910 flow [2022-07-19 21:26:23,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=9574, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9910, PETRI_PLACES=354, PETRI_TRANSITIONS=556} [2022-07-19 21:26:23,731 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 143 predicate places. [2022-07-19 21:26:23,731 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 556 transitions, 9910 flow [2022-07-19 21:26:23,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:23,731 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:23,732 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] [2022-07-19 21:26:23,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:26:23,732 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:23,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1862321501, now seen corresponding path program 11 times [2022-07-19 21:26:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:23,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253453089] [2022-07-19 21:26:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:23,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:23,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:23,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253453089] [2022-07-19 21:26:23,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253453089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:23,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:23,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:23,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893556595] [2022-07-19 21:26:23,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:23,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:23,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:23,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:23,802 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:23,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 556 transitions, 9910 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:23,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:23,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:23,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:26,510 INFO L129 PetriNetUnfolder]: 1588/14242 cut-off events. [2022-07-19 21:26:26,510 INFO L130 PetriNetUnfolder]: For 76975/77592 co-relation queries the response was YES. [2022-07-19 21:26:26,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34805 conditions, 14242 events. 1588/14242 cut-off events. For 76975/77592 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 194530 event pairs, 424 based on Foata normal form. 115/13616 useless extension candidates. Maximal degree in co-relation 33381. Up to 1031 conditions per place. [2022-07-19 21:26:26,671 INFO L132 encePairwiseOnDemand]: 216/232 looper letters, 280 selfloop transitions, 130 changer transitions 4/602 dead transitions. [2022-07-19 21:26:26,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 602 transitions, 11271 flow [2022-07-19 21:26:26,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:26:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:26:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1449 transitions. [2022-07-19 21:26:26,673 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8922413793103449 [2022-07-19 21:26:26,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1449 transitions. [2022-07-19 21:26:26,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1449 transitions. [2022-07-19 21:26:26,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:26,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1449 transitions. [2022-07-19 21:26:26,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 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) [2022-07-19 21:26:26,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:26:26,677 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:26:26,677 INFO L186 Difference]: Start difference. First operand has 354 places, 556 transitions, 9910 flow. Second operand 7 states and 1449 transitions. [2022-07-19 21:26:26,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 602 transitions, 11271 flow [2022-07-19 21:26:27,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 602 transitions, 11112 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:27,081 INFO L242 Difference]: Finished difference. Result has 358 places, 556 transitions, 10081 flow [2022-07-19 21:26:27,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=9771, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10081, PETRI_PLACES=358, PETRI_TRANSITIONS=556} [2022-07-19 21:26:27,082 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 147 predicate places. [2022-07-19 21:26:27,082 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 556 transitions, 10081 flow [2022-07-19 21:26:27,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:27,082 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:27,082 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] [2022-07-19 21:26:27,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:26:27,083 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash 375985709, now seen corresponding path program 12 times [2022-07-19 21:26:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:27,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872250066] [2022-07-19 21:26:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:27,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:27,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872250066] [2022-07-19 21:26:27,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872250066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:27,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:27,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:27,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846031325] [2022-07-19 21:26:27,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:27,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:27,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:27,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:27,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:27,155 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:27,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 556 transitions, 10081 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:27,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:27,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:27,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:29,554 INFO L129 PetriNetUnfolder]: 1594/13949 cut-off events. [2022-07-19 21:26:29,554 INFO L130 PetriNetUnfolder]: For 78593/79199 co-relation queries the response was YES. [2022-07-19 21:26:29,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34668 conditions, 13949 events. 1594/13949 cut-off events. For 78593/79199 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 190428 event pairs, 477 based on Foata normal form. 111/13315 useless extension candidates. Maximal degree in co-relation 33236. Up to 1077 conditions per place. [2022-07-19 21:26:29,713 INFO L132 encePairwiseOnDemand]: 218/232 looper letters, 297 selfloop transitions, 107 changer transitions 5/597 dead transitions. [2022-07-19 21:26:29,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 597 transitions, 11317 flow [2022-07-19 21:26:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:26:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:26:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1245 transitions. [2022-07-19 21:26:29,715 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8943965517241379 [2022-07-19 21:26:29,715 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1245 transitions. [2022-07-19 21:26:29,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1245 transitions. [2022-07-19 21:26:29,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:29,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1245 transitions. [2022-07-19 21:26:29,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.5) internal successors, (1245), 6 states have internal predecessors, (1245), 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) [2022-07-19 21:26:29,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 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) [2022-07-19 21:26:29,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 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) [2022-07-19 21:26:29,718 INFO L186 Difference]: Start difference. First operand has 358 places, 556 transitions, 10081 flow. Second operand 6 states and 1245 transitions. [2022-07-19 21:26:29,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 597 transitions, 11317 flow [2022-07-19 21:26:30,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 597 transitions, 11105 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:30,116 INFO L242 Difference]: Finished difference. Result has 359 places, 555 transitions, 10054 flow [2022-07-19 21:26:30,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=9840, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10054, PETRI_PLACES=359, PETRI_TRANSITIONS=555} [2022-07-19 21:26:30,118 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 148 predicate places. [2022-07-19 21:26:30,118 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 555 transitions, 10054 flow [2022-07-19 21:26:30,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 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) [2022-07-19 21:26:30,118 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:30,119 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] [2022-07-19 21:26:30,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:26:30,119 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash 76464902, now seen corresponding path program 1 times [2022-07-19 21:26:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298156316] [2022-07-19 21:26:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:30,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:30,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298156316] [2022-07-19 21:26:30,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298156316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:30,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:30,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:30,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510006806] [2022-07-19 21:26:30,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:30,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:30,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:30,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:30,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:30,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 232 [2022-07-19 21:26:30,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 555 transitions, 10054 flow. Second operand has 5 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 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) [2022-07-19 21:26:30,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:30,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 232 [2022-07-19 21:26:30,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:32,913 INFO L129 PetriNetUnfolder]: 1650/15384 cut-off events. [2022-07-19 21:26:32,914 INFO L130 PetriNetUnfolder]: For 80653/81372 co-relation queries the response was YES. [2022-07-19 21:26:33,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36904 conditions, 15384 events. 1650/15384 cut-off events. For 80653/81372 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 217429 event pairs, 395 based on Foata normal form. 150/14807 useless extension candidates. Maximal degree in co-relation 35471. Up to 1096 conditions per place. [2022-07-19 21:26:33,084 INFO L132 encePairwiseOnDemand]: 216/232 looper letters, 382 selfloop transitions, 121 changer transitions 8/699 dead transitions. [2022-07-19 21:26:33,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 699 transitions, 13309 flow [2022-07-19 21:26:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:26:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:26:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1481 transitions. [2022-07-19 21:26:33,087 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9119458128078818 [2022-07-19 21:26:33,087 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1481 transitions. [2022-07-19 21:26:33,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1481 transitions. [2022-07-19 21:26:33,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:33,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1481 transitions. [2022-07-19 21:26:33,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 211.57142857142858) internal successors, (1481), 7 states have internal predecessors, (1481), 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) [2022-07-19 21:26:33,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:26:33,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 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) [2022-07-19 21:26:33,090 INFO L186 Difference]: Start difference. First operand has 359 places, 555 transitions, 10054 flow. Second operand 7 states and 1481 transitions. [2022-07-19 21:26:33,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 699 transitions, 13309 flow [2022-07-19 21:26:33,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 699 transitions, 13184 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:33,558 INFO L242 Difference]: Finished difference. Result has 369 places, 598 transitions, 11308 flow [2022-07-19 21:26:33,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=9935, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11308, PETRI_PLACES=369, PETRI_TRANSITIONS=598} [2022-07-19 21:26:33,559 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 158 predicate places. [2022-07-19 21:26:33,559 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 598 transitions, 11308 flow [2022-07-19 21:26:33,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 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) [2022-07-19 21:26:33,560 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:33,560 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] [2022-07-19 21:26:33,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:26:33,560 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash 672046483, now seen corresponding path program 1 times [2022-07-19 21:26:33,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:33,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098937049] [2022-07-19 21:26:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:33,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:33,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:33,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098937049] [2022-07-19 21:26:33,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098937049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:33,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:33,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603045177] [2022-07-19 21:26:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:33,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:33,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:33,654 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 232 [2022-07-19 21:26:33,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 598 transitions, 11308 flow. Second operand has 10 states, 10 states have (on average 193.6) internal successors, (1936), 10 states have internal predecessors, (1936), 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) [2022-07-19 21:26:33,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:33,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 232 [2022-07-19 21:26:33,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:40,207 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([590] L50-15-->L50-16: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite6#1_3| |v_thread2Thread1of1ForFork1_#t~ite7#1_7|) InVars {thread2Thread1of1ForFork1_#t~ite6#1=|v_thread2Thread1of1ForFork1_#t~ite6#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite6#1=|v_thread2Thread1of1ForFork1_#t~ite6#1_3|, thread2Thread1of1ForFork1_#t~ite7#1=|v_thread2Thread1of1ForFork1_#t~ite7#1_7|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite7#1][138], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), 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~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:40,207 INFO L384 tUnfolder$Statistics]: this new event has 126 ancestors and is cut-off event [2022-07-19 21:26:40,207 INFO L387 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-07-19 21:26:40,207 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:26:40,207 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:26:40,299 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([590] L50-15-->L50-16: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite6#1_3| |v_thread2Thread1of1ForFork1_#t~ite7#1_7|) InVars {thread2Thread1of1ForFork1_#t~ite6#1=|v_thread2Thread1of1ForFork1_#t~ite6#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite6#1=|v_thread2Thread1of1ForFork1_#t~ite6#1_3|, thread2Thread1of1ForFork1_#t~ite7#1=|v_thread2Thread1of1ForFork1_#t~ite7#1_7|} AuxVars[] 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~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:40,378 INFO L384 tUnfolder$Statistics]: this new event has 128 ancestors and is cut-off event [2022-07-19 21:26:40,378 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-07-19 21:26:40,378 INFO L387 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-07-19 21:26:40,378 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-07-19 21:26:40,449 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([590] L50-15-->L50-16: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite6#1_3| |v_thread2Thread1of1ForFork1_#t~ite7#1_7|) InVars {thread2Thread1of1ForFork1_#t~ite6#1=|v_thread2Thread1of1ForFork1_#t~ite6#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite6#1=|v_thread2Thread1of1ForFork1_#t~ite6#1_3|, thread2Thread1of1ForFork1_#t~ite7#1=|v_thread2Thread1of1ForFork1_#t~ite7#1_7|} AuxVars[] 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[2022-07-19 21:26:40,508 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([590] L50-15-->L50-16: Formula: (= |v_thread2Thread1of1ForFork1_#t~ite6#1_3| |v_thread2Thread1of1ForFork1_#t~ite7#1_7|) InVars {thread2Thread1of1ForFork1_#t~ite6#1=|v_thread2Thread1of1ForFork1_#t~ite6#1_3|} OutVars{thread2Thread1of1ForFork1_#t~ite6#1=|v_thread2Thread1of1ForFork1_#t~ite6#1_3|, thread2Thread1of1ForFork1_#t~ite7#1=|v_thread2Thread1of1ForFork1_#t~ite7#1_7|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite7#1][138], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 0)), Black: 233#(and (= ~result_8~0 0) (= 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~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0))]) [2022-07-19 21:26:40,508 INFO L384 tUnfolder$Statistics]: this new event has 130 ancestors and is cut-off event [2022-07-19 21:26:40,508 INFO L387 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2022-07-19 21:26:40,508 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:40,508 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:41,064 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([635] L56-15-->L56-16: Formula: (= |v_thread3Thread1of1ForFork2_#t~ite10#1_3| |v_thread3Thread1of1ForFork2_#t~ite11#1_7|) InVars {thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite11#1=|v_thread3Thread1of1ForFork2_#t~ite11#1_7|, 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ancestors and is cut-off event [2022-07-19 21:26:41,079 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-19 21:26:41,079 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-07-19 21:26:41,089 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([635] L56-15-->L56-16: Formula: (= |v_thread3Thread1of1ForFork2_#t~ite10#1_3| |v_thread3Thread1of1ForFork2_#t~ite11#1_7|) InVars {thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite11#1=|v_thread3Thread1of1ForFork2_#t~ite11#1_7|, thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~ite11#1][467], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= 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INFO L384 tUnfolder$Statistics]: this new event has 150 ancestors and is cut-off event [2022-07-19 21:26:41,095 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-07-19 21:26:41,095 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-07-19 21:26:41,095 INFO L387 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-07-19 21:26:41,107 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([635] L56-15-->L56-16: Formula: (= |v_thread3Thread1of1ForFork2_#t~ite10#1_3| |v_thread3Thread1of1ForFork2_#t~ite11#1_7|) InVars {thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite11#1=|v_thread3Thread1of1ForFork2_#t~ite11#1_7|, thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~ite11#1][467], [408#(and (or 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ancestors and is cut-off event [2022-07-19 21:26:41,116 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([635] L56-15-->L56-16: Formula: (= |v_thread3Thread1of1ForFork2_#t~ite10#1_3| |v_thread3Thread1of1ForFork2_#t~ite11#1_7|) InVars {thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite11#1=|v_thread3Thread1of1ForFork2_#t~ite11#1_7|, thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~ite11#1][467], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))), Black: 240#(and (= ~result_8~0 0) (= ~result_7~0 0) (= |thread3Thread1of1ForFork2_#t~ite12#1| 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[2022-07-19 21:26:41,129 INFO L387 tUnfolder$Statistics]: existing Event has 125 ancestors and is cut-off event [2022-07-19 21:26:41,129 INFO L387 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-07-19 21:26:41,137 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([635] L56-15-->L56-16: Formula: (= |v_thread3Thread1of1ForFork2_#t~ite10#1_3| |v_thread3Thread1of1ForFork2_#t~ite11#1_7|) InVars {thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite11#1=|v_thread3Thread1of1ForFork2_#t~ite11#1_7|, thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~ite11#1][467], [408#(and (or (= ~sort_label_is_null_5~0 (* 256 (div ~sort_label_is_null_5~0 256))) (not (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256)))) (or (= ~sort_label_is_null_3~0 (* (div 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tUnfolder$Statistics]: existing Event has 152 ancestors and is cut-off event [2022-07-19 21:26:41,149 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:41,150 INFO L387 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2022-07-19 21:26:41,150 INFO L387 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-07-19 21:26:41,258 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([635] L56-15-->L56-16: Formula: (= |v_thread3Thread1of1ForFork2_#t~ite10#1_3| |v_thread3Thread1of1ForFork2_#t~ite11#1_7|) InVars {thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread3Thread1of1ForFork2_#t~ite11#1=|v_thread3Thread1of1ForFork2_#t~ite11#1_7|, thread3Thread1of1ForFork2_#t~ite10#1=|v_thread3Thread1of1ForFork2_#t~ite10#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~ite11#1][467], [408#(and (or (= 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ancestors and is cut-off event [2022-07-19 21:26:41,265 INFO L387 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-07-19 21:26:41,265 INFO L387 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-07-19 21:26:41,265 INFO L387 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-07-19 21:26:41,265 INFO L387 tUnfolder$Statistics]: existing Event has 159 ancestors and is cut-off event [2022-07-19 21:26:41,295 INFO L129 PetriNetUnfolder]: 9851/34326 cut-off events. [2022-07-19 21:26:41,295 INFO L130 PetriNetUnfolder]: For 75535/84150 co-relation queries the response was YES. [2022-07-19 21:26:41,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75859 conditions, 34326 events. 9851/34326 cut-off events. For 75535/84150 co-relation queries the response was YES. Maximal size of possible extension queue 2649. Compared 490640 event pairs, 4918 based on Foata normal form. 123/32265 useless extension candidates. Maximal degree in co-relation 69605. Up to 12167 conditions per place. [2022-07-19 21:26:41,735 INFO L132 encePairwiseOnDemand]: 219/232 looper letters, 95 selfloop transitions, 7 changer transitions 53/713 dead transitions. [2022-07-19 21:26:41,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 713 transitions, 11984 flow [2022-07-19 21:26:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4724 transitions. [2022-07-19 21:26:41,739 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8484195402298851 [2022-07-19 21:26:41,739 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4724 transitions. [2022-07-19 21:26:41,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4724 transitions. [2022-07-19 21:26:41,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:41,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4724 transitions. [2022-07-19 21:26:41,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 196.83333333333334) internal successors, (4724), 24 states have internal predecessors, (4724), 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) [2022-07-19 21:26:41,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 232.0) internal successors, (5800), 25 states have internal predecessors, (5800), 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) [2022-07-19 21:26:41,747 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 232.0) internal successors, (5800), 25 states have internal predecessors, (5800), 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) [2022-07-19 21:26:41,747 INFO L186 Difference]: Start difference. First operand has 369 places, 598 transitions, 11308 flow. Second operand 24 states and 4724 transitions. [2022-07-19 21:26:41,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 713 transitions, 11984 flow [2022-07-19 21:26:42,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 713 transitions, 11966 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:42,177 INFO L242 Difference]: Finished difference. Result has 414 places, 604 transitions, 11408 flow [2022-07-19 21:26:42,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=11290, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=11408, PETRI_PLACES=414, PETRI_TRANSITIONS=604} [2022-07-19 21:26:42,178 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 203 predicate places. [2022-07-19 21:26:42,178 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 604 transitions, 11408 flow [2022-07-19 21:26:42,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 193.6) internal successors, (1936), 10 states have internal predecessors, (1936), 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) [2022-07-19 21:26:42,179 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:42,179 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] [2022-07-19 21:26:42,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:26:42,179 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:42,180 INFO L85 PathProgramCache]: Analyzing trace with hash -239866165, now seen corresponding path program 1 times [2022-07-19 21:26:42,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:42,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667424205] [2022-07-19 21:26:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:42,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:42,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:42,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667424205] [2022-07-19 21:26:42,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667424205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:42,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:42,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:26:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519803727] [2022-07-19 21:26:42,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:42,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:26:42,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:26:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:26:42,243 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 232 [2022-07-19 21:26:42,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 604 transitions, 11408 flow. Second operand has 7 states, 7 states have (on average 201.85714285714286) internal successors, (1413), 7 states have internal predecessors, (1413), 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) [2022-07-19 21:26:42,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:42,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 232 [2022-07-19 21:26:42,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:46,212 INFO L129 PetriNetUnfolder]: 1960/17952 cut-off events. [2022-07-19 21:26:46,213 INFO L130 PetriNetUnfolder]: For 95709/105981 co-relation queries the response was YES. [2022-07-19 21:26:46,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49951 conditions, 17952 events. 1960/17952 cut-off events. For 95709/105981 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 257828 event pairs, 966 based on Foata normal form. 591/17575 useless extension candidates. Maximal degree in co-relation 49520. Up to 1364 conditions per place. [2022-07-19 21:26:46,448 INFO L132 encePairwiseOnDemand]: 224/232 looper letters, 23 selfloop transitions, 5 changer transitions 82/624 dead transitions. [2022-07-19 21:26:46,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 624 transitions, 11545 flow [2022-07-19 21:26:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:26:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:26:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1834 transitions. [2022-07-19 21:26:46,449 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8783524904214559 [2022-07-19 21:26:46,449 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1834 transitions. [2022-07-19 21:26:46,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1834 transitions. [2022-07-19 21:26:46,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:46,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1834 transitions. [2022-07-19 21:26:46,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 203.77777777777777) internal successors, (1834), 9 states have internal predecessors, (1834), 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) [2022-07-19 21:26:46,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 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) [2022-07-19 21:26:46,453 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 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) [2022-07-19 21:26:46,453 INFO L186 Difference]: Start difference. First operand has 414 places, 604 transitions, 11408 flow. Second operand 9 states and 1834 transitions. [2022-07-19 21:26:46,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 624 transitions, 11545 flow [2022-07-19 21:26:47,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 624 transitions, 11526 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-07-19 21:26:47,081 INFO L242 Difference]: Finished difference. Result has 402 places, 540 transitions, 9418 flow [2022-07-19 21:26:47,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=11389, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9418, PETRI_PLACES=402, PETRI_TRANSITIONS=540} [2022-07-19 21:26:47,082 INFO L279 CegarLoopForPetriNet]: 211 programPoint places, 191 predicate places. [2022-07-19 21:26:47,082 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 540 transitions, 9418 flow [2022-07-19 21:26:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 201.85714285714286) internal successors, (1413), 7 states have internal predecessors, (1413), 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) [2022-07-19 21:26:47,083 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:47,083 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] [2022-07-19 21:26:47,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:26:47,083 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:47,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash -287043365, now seen corresponding path program 2 times [2022-07-19 21:26:47,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:47,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157125496] [2022-07-19 21:26:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:47,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:47,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157125496] [2022-07-19 21:26:47,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157125496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:47,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:47,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:47,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153666007] [2022-07-19 21:26:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:47,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:47,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:47,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:47,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:47,185 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 232 [2022-07-19 21:26:47,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 540 transitions, 9418 flow. Second operand has 10 states, 10 states have (on average 193.6) internal successors, (1936), 10 states have internal predecessors, (1936), 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) [2022-07-19 21:26:47,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:47,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 232 [2022-07-19 21:26:47,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand