./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-simpl-str-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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:05:33,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:05:33,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:05:33,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:05:33,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:05:33,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:05:33,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:05:33,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:05:33,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:05:33,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:05:33,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:05:33,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:05:33,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:05:33,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:05:33,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:05:33,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:05:33,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:05:33,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:05:33,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:05:33,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:05:33,683 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:05:33,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:05:33,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:05:33,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:05:33,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:05:33,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:05:33,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:05:33,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:05:33,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:05:33,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:05:33,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:05:33,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:05:33,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:05:33,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:05:33,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:05:33,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:05:33,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:05:33,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:05:33,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:05:33,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:05:33,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:05:33,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:05:33,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:05:33,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:05:33,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:05:33,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:05:33,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:05:33,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:05:33,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:05:33,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:05:33,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:05:33,729 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:05:33,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:05:33,730 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:05:33,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:05:33,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:05:33,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:05:33,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:05:33,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:05:33,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:05:33,731 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:05:33,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:05:33,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:05:33,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:05:33,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:05:33,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:05:33,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:05:33,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:33,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:05:33,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:05:33,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:05:33,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:05:33,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:05:33,733 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:05:33,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:05:33,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:05:33,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-07-13 22:05:33,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:05:33,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:05:33,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:05:33,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:05:33,922 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:05:33,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-13 22:05:33,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f2235201/97672d55b31441178994980cf18ac23e/FLAG8014682f1 [2022-07-13 22:05:34,334 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:05:34,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-13 22:05:34,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f2235201/97672d55b31441178994980cf18ac23e/FLAG8014682f1 [2022-07-13 22:05:34,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f2235201/97672d55b31441178994980cf18ac23e [2022-07-13 22:05:34,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:05:34,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:05:34,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:34,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:05:34,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:05:34,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704d12bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34, skipping insertion in model container [2022-07-13 22:05:34,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:05:34,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:05:34,568 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-simpl-str-subst.wvr.c[2575,2588] [2022-07-13 22:05:34,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:34,585 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:05:34,619 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-simpl-str-subst.wvr.c[2575,2588] [2022-07-13 22:05:34,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:34,631 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:05:34,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34 WrapperNode [2022-07-13 22:05:34,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:34,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:34,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:05:34,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:05:34,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,677 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 179 [2022-07-13 22:05:34,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:34,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:05:34,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:05:34,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:05:34,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:05:34,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:05:34,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:05:34,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:05:34,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (1/1) ... [2022-07-13 22:05:34,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:34,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:34,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:05:34,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:05:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:05:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:05:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:05:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:05:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:05:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:05:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:05:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:05:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:05:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:05:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:05:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:05:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:05:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:05:34,788 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:05:34,883 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:05:34,884 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:05:35,181 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:05:35,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:05:35,189 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:05:35,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:35 BoogieIcfgContainer [2022-07-13 22:05:35,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:05:35,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:05:35,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:05:35,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:05:35,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:05:34" (1/3) ... [2022-07-13 22:05:35,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d032706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:35, skipping insertion in model container [2022-07-13 22:05:35,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:34" (2/3) ... [2022-07-13 22:05:35,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d032706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:35, skipping insertion in model container [2022-07-13 22:05:35,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:35" (3/3) ... [2022-07-13 22:05:35,202 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-07-13 22:05:35,205 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:05:35,214 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:05:35,214 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:05:35,214 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:05:35,286 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:05:35,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 494 flow [2022-07-13 22:05:35,425 INFO L129 PetriNetUnfolder]: 17/232 cut-off events. [2022-07-13 22:05:35,426 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:05:35,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 17/232 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 510 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-07-13 22:05:35,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 235 transitions, 494 flow [2022-07-13 22:05:35,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 221 transitions, 460 flow [2022-07-13 22:05:35,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:05:35,460 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@64816cc6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c8619a2 [2022-07-13 22:05:35,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:05:35,493 INFO L129 PetriNetUnfolder]: 17/220 cut-off events. [2022-07-13 22:05:35,497 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:05:35,498 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:35,498 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:35,499 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)] === [2022-07-13 22:05:35,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1711885606, now seen corresponding path program 1 times [2022-07-13 22:05:35,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:35,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479325068] [2022-07-13 22:05:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:35,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:35,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479325068] [2022-07-13 22:05:35,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479325068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:35,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:35,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:35,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361863102] [2022-07-13 22:05:35,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:35,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:35,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:35,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:35,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:35,797 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-13 22:05:35,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 221 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:35,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:35,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-13 22:05:35,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:35,965 INFO L129 PetriNetUnfolder]: 84/1006 cut-off events. [2022-07-13 22:05:35,965 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-07-13 22:05:35,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1006 events. 84/1006 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7154 event pairs, 22 based on Foata normal form. 68/984 useless extension candidates. Maximal degree in co-relation 999. Up to 73 conditions per place. [2022-07-13 22:05:35,978 INFO L132 encePairwiseOnDemand]: 219/235 looper letters, 20 selfloop transitions, 4 changer transitions 2/221 dead transitions. [2022-07-13 22:05:35,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 221 transitions, 520 flow [2022-07-13 22:05:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-07-13 22:05:35,995 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.950354609929078 [2022-07-13 22:05:35,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-07-13 22:05:35,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-07-13 22:05:36,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:36,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-07-13 22:05:36,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,015 INFO L186 Difference]: Start difference. First operand has 214 places, 221 transitions, 460 flow. Second operand 3 states and 670 transitions. [2022-07-13 22:05:36,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 221 transitions, 520 flow [2022-07-13 22:05:36,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 221 transitions, 500 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:05:36,035 INFO L242 Difference]: Finished difference. Result has 212 places, 215 transitions, 468 flow [2022-07-13 22:05:36,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2022-07-13 22:05:36,040 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-07-13 22:05:36,041 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 468 flow [2022-07-13 22:05:36,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,041 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:36,041 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:36,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:05:36,042 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)] === [2022-07-13 22:05:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:36,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1537026462, now seen corresponding path program 1 times [2022-07-13 22:05:36,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:36,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353878341] [2022-07-13 22:05:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:36,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:36,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353878341] [2022-07-13 22:05:36,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353878341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:36,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:36,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:36,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079066054] [2022-07-13 22:05:36,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:36,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:36,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:36,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:36,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:36,163 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-13 22:05:36,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:36,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-13 22:05:36,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:36,395 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-13 22:05:36,396 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-13 22:05:36,396 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-13 22:05:36,396 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-13 22:05:36,397 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-13 22:05:36,397 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-13 22:05:36,397 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-13 22:05:36,397 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-13 22:05:36,398 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-13 22:05:36,398 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-13 22:05:36,398 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-07-13 22:05:36,400 INFO L382 tUnfolder$Statistics]: inserting event number 6 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-13 22:05:36,400 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is not cut-off event [2022-07-13 22:05:36,400 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-13 22:05:36,400 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-13 22:05:36,400 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-13 22:05:36,401 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-13 22:05:36,401 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-13 22:05:36,410 INFO L129 PetriNetUnfolder]: 96/2144 cut-off events. [2022-07-13 22:05:36,411 INFO L130 PetriNetUnfolder]: For 85/89 co-relation queries the response was YES. [2022-07-13 22:05:36,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 2144 events. 96/2144 cut-off events. For 85/89 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21163 event pairs, 28 based on Foata normal form. 0/1986 useless extension candidates. Maximal degree in co-relation 1296. Up to 89 conditions per place. [2022-07-13 22:05:36,425 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 19 selfloop transitions, 3 changer transitions 0/223 dead transitions. [2022-07-13 22:05:36,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 223 transitions, 533 flow [2022-07-13 22:05:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-13 22:05:36,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-13 22:05:36,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-13 22:05:36,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-13 22:05:36,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:36,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-13 22:05:36,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,433 INFO L186 Difference]: Start difference. First operand has 212 places, 215 transitions, 468 flow. Second operand 3 states and 661 transitions. [2022-07-13 22:05:36,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 223 transitions, 533 flow [2022-07-13 22:05:36,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 223 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:36,443 INFO L242 Difference]: Finished difference. Result has 213 places, 218 transitions, 494 flow [2022-07-13 22:05:36,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=213, PETRI_TRANSITIONS=218} [2022-07-13 22:05:36,445 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -1 predicate places. [2022-07-13 22:05:36,445 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 218 transitions, 494 flow [2022-07-13 22:05:36,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,445 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:36,446 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:36,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:05:36,446 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)] === [2022-07-13 22:05:36,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:36,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1414919130, now seen corresponding path program 2 times [2022-07-13 22:05:36,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:36,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845497049] [2022-07-13 22:05:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:36,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:36,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:36,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845497049] [2022-07-13 22:05:36,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845497049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:36,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:36,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:36,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716019720] [2022-07-13 22:05:36,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:36,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:36,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:36,531 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-13 22:05:36,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 218 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:36,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-13 22:05:36,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:36,750 INFO L129 PetriNetUnfolder]: 80/1827 cut-off events. [2022-07-13 22:05:36,751 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-07-13 22:05:36,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 1827 events. 80/1827 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16400 event pairs, 28 based on Foata normal form. 7/1684 useless extension candidates. Maximal degree in co-relation 1309. Up to 78 conditions per place. [2022-07-13 22:05:36,765 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 20 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2022-07-13 22:05:36,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 226 transitions, 571 flow [2022-07-13 22:05:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-13 22:05:36,767 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-13 22:05:36,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-13 22:05:36,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-13 22:05:36,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:36,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-13 22:05:36,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,771 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,771 INFO L186 Difference]: Start difference. First operand has 213 places, 218 transitions, 494 flow. Second operand 3 states and 661 transitions. [2022-07-13 22:05:36,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 226 transitions, 571 flow [2022-07-13 22:05:36,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 226 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:36,776 INFO L242 Difference]: Finished difference. Result has 216 places, 221 transitions, 535 flow [2022-07-13 22:05:36,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=216, PETRI_TRANSITIONS=221} [2022-07-13 22:05:36,778 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 2 predicate places. [2022-07-13 22:05:36,778 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 221 transitions, 535 flow [2022-07-13 22:05:36,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,779 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:36,779 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:36,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:05:36,779 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)] === [2022-07-13 22:05:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1873849952, now seen corresponding path program 1 times [2022-07-13 22:05:36,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:36,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247818258] [2022-07-13 22:05:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:36,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:36,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:36,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247818258] [2022-07-13 22:05:36,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247818258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:36,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:36,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461785104] [2022-07-13 22:05:36,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:36,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:36,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:36,866 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-13 22:05:36,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 221 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:36,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-13 22:05:36,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:37,207 INFO L129 PetriNetUnfolder]: 96/3140 cut-off events. [2022-07-13 22:05:37,207 INFO L130 PetriNetUnfolder]: For 98/131 co-relation queries the response was YES. [2022-07-13 22:05:37,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 3140 events. 96/3140 cut-off events. For 98/131 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 34386 event pairs, 33 based on Foata normal form. 0/2910 useless extension candidates. Maximal degree in co-relation 2319. Up to 121 conditions per place. [2022-07-13 22:05:37,227 INFO L132 encePairwiseOnDemand]: 231/235 looper letters, 17 selfloop transitions, 2 changer transitions 0/228 dead transitions. [2022-07-13 22:05:37,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 228 transitions, 592 flow [2022-07-13 22:05:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-13 22:05:37,233 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-13 22:05:37,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-13 22:05:37,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-13 22:05:37,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:37,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-13 22:05:37,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,237 INFO L186 Difference]: Start difference. First operand has 216 places, 221 transitions, 535 flow. Second operand 3 states and 663 transitions. [2022-07-13 22:05:37,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 228 transitions, 592 flow [2022-07-13 22:05:37,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 228 transitions, 576 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:37,251 INFO L242 Difference]: Finished difference. Result has 218 places, 223 transitions, 539 flow [2022-07-13 22:05:37,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=539, PETRI_PLACES=218, PETRI_TRANSITIONS=223} [2022-07-13 22:05:37,252 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2022-07-13 22:05:37,252 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 223 transitions, 539 flow [2022-07-13 22:05:37,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,253 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:37,253 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:37,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:05:37,254 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)] === [2022-07-13 22:05:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:37,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1926563626, now seen corresponding path program 1 times [2022-07-13 22:05:37,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:37,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472063820] [2022-07-13 22:05:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:37,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:37,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:37,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472063820] [2022-07-13 22:05:37,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472063820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:37,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:37,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:37,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988487204] [2022-07-13 22:05:37,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:37,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:37,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:37,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:37,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:37,335 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-13 22:05:37,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 223 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:37,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-13 22:05:37,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:37,668 INFO L129 PetriNetUnfolder]: 130/2353 cut-off events. [2022-07-13 22:05:37,668 INFO L130 PetriNetUnfolder]: For 139/233 co-relation queries the response was YES. [2022-07-13 22:05:37,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 2353 events. 130/2353 cut-off events. For 139/233 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21882 event pairs, 33 based on Foata normal form. 4/2183 useless extension candidates. Maximal degree in co-relation 1425. Up to 137 conditions per place. [2022-07-13 22:05:37,681 INFO L132 encePairwiseOnDemand]: 225/235 looper letters, 22 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2022-07-13 22:05:37,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 231 transitions, 623 flow [2022-07-13 22:05:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-07-13 22:05:37,683 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-07-13 22:05:37,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-07-13 22:05:37,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-07-13 22:05:37,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:37,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-07-13 22:05:37,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,687 INFO L186 Difference]: Start difference. First operand has 218 places, 223 transitions, 539 flow. Second operand 3 states and 658 transitions. [2022-07-13 22:05:37,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 231 transitions, 623 flow [2022-07-13 22:05:37,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:37,693 INFO L242 Difference]: Finished difference. Result has 221 places, 227 transitions, 593 flow [2022-07-13 22:05:37,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=221, PETRI_TRANSITIONS=227} [2022-07-13 22:05:37,695 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 7 predicate places. [2022-07-13 22:05:37,695 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 227 transitions, 593 flow [2022-07-13 22:05:37,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,696 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:37,696 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:37,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:05:37,696 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)] === [2022-07-13 22:05:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:37,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1437708392, now seen corresponding path program 1 times [2022-07-13 22:05:37,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:37,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43977902] [2022-07-13 22:05:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:37,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:37,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:37,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43977902] [2022-07-13 22:05:37,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43977902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:37,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:37,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:05:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592305829] [2022-07-13 22:05:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:37,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:05:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:05:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:05:37,831 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-13 22:05:37,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 227 transitions, 593 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:37,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-13 22:05:37,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:38,126 INFO L129 PetriNetUnfolder]: 114/2103 cut-off events. [2022-07-13 22:05:38,127 INFO L130 PetriNetUnfolder]: For 155/421 co-relation queries the response was YES. [2022-07-13 22:05:38,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 2103 events. 114/2103 cut-off events. For 155/421 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19801 event pairs, 40 based on Foata normal form. 5/1993 useless extension candidates. Maximal degree in co-relation 1946. Up to 199 conditions per place. [2022-07-13 22:05:38,143 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 21 selfloop transitions, 0 changer transitions 22/247 dead transitions. [2022-07-13 22:05:38,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 247 transitions, 730 flow [2022-07-13 22:05:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:05:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:05:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-13 22:05:38,147 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-13 22:05:38,147 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-13 22:05:38,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-13 22:05:38,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:38,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-13 22:05:38,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,155 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,156 INFO L186 Difference]: Start difference. First operand has 221 places, 227 transitions, 593 flow. Second operand 9 states and 1861 transitions. [2022-07-13 22:05:38,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 247 transitions, 730 flow [2022-07-13 22:05:38,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 247 transitions, 710 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:38,161 INFO L242 Difference]: Finished difference. Result has 234 places, 225 transitions, 579 flow [2022-07-13 22:05:38,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=234, PETRI_TRANSITIONS=225} [2022-07-13 22:05:38,164 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-07-13 22:05:38,164 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 225 transitions, 579 flow [2022-07-13 22:05:38,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,165 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,165 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:38,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:05:38,166 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)] === [2022-07-13 22:05:38,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,167 INFO L85 PathProgramCache]: Analyzing trace with hash 169299696, now seen corresponding path program 1 times [2022-07-13 22:05:38,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644075392] [2022-07-13 22:05:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:38,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:38,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644075392] [2022-07-13 22:05:38,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644075392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:38,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:38,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:38,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092427192] [2022-07-13 22:05:38,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:38,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:38,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:38,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-13 22:05:38,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 225 transitions, 579 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:38,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-13 22:05:38,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:38,330 INFO L129 PetriNetUnfolder]: 46/1393 cut-off events. [2022-07-13 22:05:38,330 INFO L130 PetriNetUnfolder]: For 47/57 co-relation queries the response was YES. [2022-07-13 22:05:38,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 1393 events. 46/1393 cut-off events. For 47/57 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10719 event pairs, 7 based on Foata normal form. 0/1307 useless extension candidates. Maximal degree in co-relation 1706. Up to 45 conditions per place. [2022-07-13 22:05:38,342 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 17 selfloop transitions, 4 changer transitions 1/232 dead transitions. [2022-07-13 22:05:38,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 232 transitions, 644 flow [2022-07-13 22:05:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-13 22:05:38,344 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-13 22:05:38,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-13 22:05:38,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-13 22:05:38,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:38,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-13 22:05:38,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,347 INFO L186 Difference]: Start difference. First operand has 234 places, 225 transitions, 579 flow. Second operand 3 states and 663 transitions. [2022-07-13 22:05:38,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 232 transitions, 644 flow [2022-07-13 22:05:38,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 232 transitions, 630 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-07-13 22:05:38,354 INFO L242 Difference]: Finished difference. Result has 224 places, 226 transitions, 593 flow [2022-07-13 22:05:38,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=224, PETRI_TRANSITIONS=226} [2022-07-13 22:05:38,355 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 10 predicate places. [2022-07-13 22:05:38,355 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 226 transitions, 593 flow [2022-07-13 22:05:38,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,356 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,356 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:38,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:05:38,356 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)] === [2022-07-13 22:05:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash -68732316, now seen corresponding path program 1 times [2022-07-13 22:05:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943867282] [2022-07-13 22:05:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:38,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:38,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943867282] [2022-07-13 22:05:38,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943867282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:38,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:38,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:38,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983719415] [2022-07-13 22:05:38,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:38,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:38,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:38,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:38,469 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:38,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 226 transitions, 593 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:38,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:38,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:39,128 INFO L129 PetriNetUnfolder]: 913/3930 cut-off events. [2022-07-13 22:05:39,128 INFO L130 PetriNetUnfolder]: For 297/395 co-relation queries the response was YES. [2022-07-13 22:05:39,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6112 conditions, 3930 events. 913/3930 cut-off events. For 297/395 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 39116 event pairs, 592 based on Foata normal form. 2/3714 useless extension candidates. Maximal degree in co-relation 6102. Up to 1296 conditions per place. [2022-07-13 22:05:39,169 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 76 selfloop transitions, 30 changer transitions 28/330 dead transitions. [2022-07-13 22:05:39,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 330 transitions, 1102 flow [2022-07-13 22:05:39,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2022-07-13 22:05:39,180 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494680851063829 [2022-07-13 22:05:39,180 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2022-07-13 22:05:39,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2022-07-13 22:05:39,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:39,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2022-07-13 22:05:39,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.625) internal successors, (4791), 24 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,203 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,203 INFO L186 Difference]: Start difference. First operand has 224 places, 226 transitions, 593 flow. Second operand 24 states and 4791 transitions. [2022-07-13 22:05:39,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 330 transitions, 1102 flow [2022-07-13 22:05:39,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 330 transitions, 1090 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:39,209 INFO L242 Difference]: Finished difference. Result has 264 places, 255 transitions, 797 flow [2022-07-13 22:05:39,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=797, PETRI_PLACES=264, PETRI_TRANSITIONS=255} [2022-07-13 22:05:39,210 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 50 predicate places. [2022-07-13 22:05:39,210 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 255 transitions, 797 flow [2022-07-13 22:05:39,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,211 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:39,211 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:39,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:05:39,211 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)] === [2022-07-13 22:05:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1664128876, now seen corresponding path program 2 times [2022-07-13 22:05:39,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:39,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454999165] [2022-07-13 22:05:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:39,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:39,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:39,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454999165] [2022-07-13 22:05:39,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454999165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:39,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:39,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234960625] [2022-07-13 22:05:39,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:39,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:39,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:39,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:39,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:39,313 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:39,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 255 transitions, 797 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:39,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:39,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:39,892 INFO L129 PetriNetUnfolder]: 1027/3970 cut-off events. [2022-07-13 22:05:39,892 INFO L130 PetriNetUnfolder]: For 3975/4061 co-relation queries the response was YES. [2022-07-13 22:05:39,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9765 conditions, 3970 events. 1027/3970 cut-off events. For 3975/4061 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39317 event pairs, 641 based on Foata normal form. 2/3741 useless extension candidates. Maximal degree in co-relation 9735. Up to 1500 conditions per place. [2022-07-13 22:05:39,935 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 68 selfloop transitions, 45 changer transitions 19/328 dead transitions. [2022-07-13 22:05:39,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 328 transitions, 1448 flow [2022-07-13 22:05:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3988 transitions. [2022-07-13 22:05:39,943 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8485106382978723 [2022-07-13 22:05:39,943 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3988 transitions. [2022-07-13 22:05:39,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3988 transitions. [2022-07-13 22:05:39,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:39,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3988 transitions. [2022-07-13 22:05:39,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.4) internal successors, (3988), 20 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,964 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,964 INFO L186 Difference]: Start difference. First operand has 264 places, 255 transitions, 797 flow. Second operand 20 states and 3988 transitions. [2022-07-13 22:05:39,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 328 transitions, 1448 flow [2022-07-13 22:05:39,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 328 transitions, 1442 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:40,004 INFO L242 Difference]: Finished difference. Result has 294 places, 287 transitions, 1215 flow [2022-07-13 22:05:40,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1215, PETRI_PLACES=294, PETRI_TRANSITIONS=287} [2022-07-13 22:05:40,005 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 80 predicate places. [2022-07-13 22:05:40,005 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 287 transitions, 1215 flow [2022-07-13 22:05:40,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,007 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:40,007 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:40,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:05:40,007 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)] === [2022-07-13 22:05:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:40,008 INFO L85 PathProgramCache]: Analyzing trace with hash -112561332, now seen corresponding path program 3 times [2022-07-13 22:05:40,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:40,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910960208] [2022-07-13 22:05:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:40,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:40,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:40,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910960208] [2022-07-13 22:05:40,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910960208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:40,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:40,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:40,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240691692] [2022-07-13 22:05:40,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:40,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:40,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:40,114 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:40,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 287 transitions, 1215 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:40,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:40,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:40,847 INFO L129 PetriNetUnfolder]: 1070/4236 cut-off events. [2022-07-13 22:05:40,848 INFO L130 PetriNetUnfolder]: For 8483/8578 co-relation queries the response was YES. [2022-07-13 22:05:40,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12265 conditions, 4236 events. 1070/4236 cut-off events. For 8483/8578 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42876 event pairs, 674 based on Foata normal form. 5/4009 useless extension candidates. Maximal degree in co-relation 12221. Up to 1603 conditions per place. [2022-07-13 22:05:40,889 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 110 selfloop transitions, 42 changer transitions 22/370 dead transitions. [2022-07-13 22:05:40,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 370 transitions, 2169 flow [2022-07-13 22:05:40,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3992 transitions. [2022-07-13 22:05:40,896 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8493617021276596 [2022-07-13 22:05:40,897 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3992 transitions. [2022-07-13 22:05:40,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3992 transitions. [2022-07-13 22:05:40,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:40,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3992 transitions. [2022-07-13 22:05:40,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.6) internal successors, (3992), 20 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,914 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,915 INFO L186 Difference]: Start difference. First operand has 294 places, 287 transitions, 1215 flow. Second operand 20 states and 3992 transitions. [2022-07-13 22:05:40,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 370 transitions, 2169 flow [2022-07-13 22:05:41,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 370 transitions, 1921 flow, removed 124 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:41,021 INFO L242 Difference]: Finished difference. Result has 324 places, 319 transitions, 1549 flow [2022-07-13 22:05:41,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1549, PETRI_PLACES=324, PETRI_TRANSITIONS=319} [2022-07-13 22:05:41,022 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 110 predicate places. [2022-07-13 22:05:41,022 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 319 transitions, 1549 flow [2022-07-13 22:05:41,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,023 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:41,023 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:41,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:05:41,024 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)] === [2022-07-13 22:05:41,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1317235276, now seen corresponding path program 4 times [2022-07-13 22:05:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:41,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574503636] [2022-07-13 22:05:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:41,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:41,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:41,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574503636] [2022-07-13 22:05:41,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574503636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:41,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:41,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:41,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462119527] [2022-07-13 22:05:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:41,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:41,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:41,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:41,149 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:41,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 319 transitions, 1549 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:41,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:41,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:42,089 INFO L129 PetriNetUnfolder]: 1115/4455 cut-off events. [2022-07-13 22:05:42,090 INFO L130 PetriNetUnfolder]: For 10480/10587 co-relation queries the response was YES. [2022-07-13 22:05:42,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13266 conditions, 4455 events. 1115/4455 cut-off events. For 10480/10587 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 46287 event pairs, 620 based on Foata normal form. 5/4240 useless extension candidates. Maximal degree in co-relation 13208. Up to 1410 conditions per place. [2022-07-13 22:05:42,135 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 141 selfloop transitions, 76 changer transitions 26/439 dead transitions. [2022-07-13 22:05:42,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 439 transitions, 2943 flow [2022-07-13 22:05:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:42,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:42,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4788 transitions. [2022-07-13 22:05:42,143 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2022-07-13 22:05:42,143 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4788 transitions. [2022-07-13 22:05:42,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4788 transitions. [2022-07-13 22:05:42,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:42,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4788 transitions. [2022-07-13 22:05:42,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.5) internal successors, (4788), 24 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,166 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,166 INFO L186 Difference]: Start difference. First operand has 324 places, 319 transitions, 1549 flow. Second operand 24 states and 4788 transitions. [2022-07-13 22:05:42,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 439 transitions, 2943 flow [2022-07-13 22:05:42,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 439 transitions, 2735 flow, removed 104 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:42,321 INFO L242 Difference]: Finished difference. Result has 363 places, 348 transitions, 2075 flow [2022-07-13 22:05:42,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2075, PETRI_PLACES=363, PETRI_TRANSITIONS=348} [2022-07-13 22:05:42,322 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 149 predicate places. [2022-07-13 22:05:42,322 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 348 transitions, 2075 flow [2022-07-13 22:05:42,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,323 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:42,323 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:42,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:05:42,323 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)] === [2022-07-13 22:05:42,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:42,324 INFO L85 PathProgramCache]: Analyzing trace with hash -795685710, now seen corresponding path program 5 times [2022-07-13 22:05:42,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:42,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687015842] [2022-07-13 22:05:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:42,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:42,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687015842] [2022-07-13 22:05:42,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687015842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:42,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:42,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445827778] [2022-07-13 22:05:42,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:42,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:42,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:42,431 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:42,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 348 transitions, 2075 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:42,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:42,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:43,397 INFO L129 PetriNetUnfolder]: 1220/4858 cut-off events. [2022-07-13 22:05:43,397 INFO L130 PetriNetUnfolder]: For 16315/16413 co-relation queries the response was YES. [2022-07-13 22:05:43,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16034 conditions, 4858 events. 1220/4858 cut-off events. For 16315/16413 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 51108 event pairs, 692 based on Foata normal form. 4/4628 useless extension candidates. Maximal degree in co-relation 15957. Up to 1643 conditions per place. [2022-07-13 22:05:43,452 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 130 selfloop transitions, 86 changer transitions 24/436 dead transitions. [2022-07-13 22:05:43,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 436 transitions, 3369 flow [2022-07-13 22:05:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4385 transitions. [2022-07-13 22:05:43,457 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8481624758220503 [2022-07-13 22:05:43,458 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4385 transitions. [2022-07-13 22:05:43,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4385 transitions. [2022-07-13 22:05:43,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:43,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4385 transitions. [2022-07-13 22:05:43,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.3181818181818) internal successors, (4385), 22 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,478 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,478 INFO L186 Difference]: Start difference. First operand has 363 places, 348 transitions, 2075 flow. Second operand 22 states and 4385 transitions. [2022-07-13 22:05:43,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 436 transitions, 3369 flow [2022-07-13 22:05:43,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 436 transitions, 3253 flow, removed 58 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:43,615 INFO L242 Difference]: Finished difference. Result has 394 places, 380 transitions, 2686 flow [2022-07-13 22:05:43,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2686, PETRI_PLACES=394, PETRI_TRANSITIONS=380} [2022-07-13 22:05:43,617 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 180 predicate places. [2022-07-13 22:05:43,617 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 380 transitions, 2686 flow [2022-07-13 22:05:43,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,617 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:43,618 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:43,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:05:43,618 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)] === [2022-07-13 22:05:43,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:43,618 INFO L85 PathProgramCache]: Analyzing trace with hash 840040018, now seen corresponding path program 6 times [2022-07-13 22:05:43,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:43,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242297927] [2022-07-13 22:05:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:43,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:43,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242297927] [2022-07-13 22:05:43,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242297927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:43,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:43,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316981317] [2022-07-13 22:05:43,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:43,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:43,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:43,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:43,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:43,730 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:43,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 380 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:43,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:43,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:44,758 INFO L129 PetriNetUnfolder]: 1277/5075 cut-off events. [2022-07-13 22:05:44,759 INFO L130 PetriNetUnfolder]: For 19797/19919 co-relation queries the response was YES. [2022-07-13 22:05:44,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17110 conditions, 5075 events. 1277/5075 cut-off events. For 19797/19919 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 54082 event pairs, 750 based on Foata normal form. 2/4838 useless extension candidates. Maximal degree in co-relation 17020. Up to 1725 conditions per place. [2022-07-13 22:05:44,833 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 139 selfloop transitions, 89 changer transitions 16/440 dead transitions. [2022-07-13 22:05:44,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 440 transitions, 3797 flow [2022-07-13 22:05:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-13 22:05:44,836 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-13 22:05:44,836 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-13 22:05:44,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-13 22:05:44,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:44,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-13 22:05:44,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,844 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,844 INFO L186 Difference]: Start difference. First operand has 394 places, 380 transitions, 2686 flow. Second operand 17 states and 3398 transitions. [2022-07-13 22:05:44,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 440 transitions, 3797 flow [2022-07-13 22:05:44,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 440 transitions, 3647 flow, removed 75 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:44,969 INFO L242 Difference]: Finished difference. Result has 415 places, 401 transitions, 3139 flow [2022-07-13 22:05:44,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3139, PETRI_PLACES=415, PETRI_TRANSITIONS=401} [2022-07-13 22:05:44,970 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 201 predicate places. [2022-07-13 22:05:44,970 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 401 transitions, 3139 flow [2022-07-13 22:05:44,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,971 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:44,971 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:44,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:05:44,971 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)] === [2022-07-13 22:05:44,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash 80032396, now seen corresponding path program 7 times [2022-07-13 22:05:44,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:44,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915007605] [2022-07-13 22:05:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:44,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:45,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:45,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915007605] [2022-07-13 22:05:45,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915007605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:45,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:45,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:45,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180563744] [2022-07-13 22:05:45,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:45,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:45,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:45,066 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:45,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 401 transitions, 3139 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:45,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:45,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:46,084 INFO L129 PetriNetUnfolder]: 1304/5373 cut-off events. [2022-07-13 22:05:46,084 INFO L130 PetriNetUnfolder]: For 23368/23552 co-relation queries the response was YES. [2022-07-13 22:05:46,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18477 conditions, 5373 events. 1304/5373 cut-off events. For 23368/23552 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 58458 event pairs, 712 based on Foata normal form. 17/5152 useless extension candidates. Maximal degree in co-relation 18379. Up to 1781 conditions per place. [2022-07-13 22:05:46,159 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 147 selfloop transitions, 104 changer transitions 14/461 dead transitions. [2022-07-13 22:05:46,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 461 transitions, 4268 flow [2022-07-13 22:05:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-07-13 22:05:46,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-07-13 22:05:46,162 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-07-13 22:05:46,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-07-13 22:05:46,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:46,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-07-13 22:05:46,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.875) internal successors, (3198), 16 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,170 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,170 INFO L186 Difference]: Start difference. First operand has 415 places, 401 transitions, 3139 flow. Second operand 16 states and 3198 transitions. [2022-07-13 22:05:46,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 461 transitions, 4268 flow [2022-07-13 22:05:46,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 461 transitions, 4146 flow, removed 61 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:46,324 INFO L242 Difference]: Finished difference. Result has 435 places, 419 transitions, 3566 flow [2022-07-13 22:05:46,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3566, PETRI_PLACES=435, PETRI_TRANSITIONS=419} [2022-07-13 22:05:46,326 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 221 predicate places. [2022-07-13 22:05:46,326 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 419 transitions, 3566 flow [2022-07-13 22:05:46,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,327 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:46,327 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:46,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:05:46,328 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)] === [2022-07-13 22:05:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:46,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1995871614, now seen corresponding path program 8 times [2022-07-13 22:05:46,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:46,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255830394] [2022-07-13 22:05:46,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:46,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:46,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:46,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255830394] [2022-07-13 22:05:46,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255830394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:46,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:46,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:46,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719251924] [2022-07-13 22:05:46,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:46,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:46,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:46,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:46,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:46,421 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:46,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 419 transitions, 3566 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:46,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:46,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,499 INFO L129 PetriNetUnfolder]: 1335/5343 cut-off events. [2022-07-13 22:05:47,499 INFO L130 PetriNetUnfolder]: For 24742/24864 co-relation queries the response was YES. [2022-07-13 22:05:47,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19704 conditions, 5343 events. 1335/5343 cut-off events. For 24742/24864 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 58449 event pairs, 679 based on Foata normal form. 11/5116 useless extension candidates. Maximal degree in co-relation 19598. Up to 1719 conditions per place. [2022-07-13 22:05:47,575 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 171 selfloop transitions, 98 changer transitions 23/488 dead transitions. [2022-07-13 22:05:47,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 488 transitions, 4987 flow [2022-07-13 22:05:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4190 transitions. [2022-07-13 22:05:47,579 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8490374873353597 [2022-07-13 22:05:47,579 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4190 transitions. [2022-07-13 22:05:47,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4190 transitions. [2022-07-13 22:05:47,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4190 transitions. [2022-07-13 22:05:47,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.52380952380952) internal successors, (4190), 21 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,588 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,589 INFO L186 Difference]: Start difference. First operand has 435 places, 419 transitions, 3566 flow. Second operand 21 states and 4190 transitions. [2022-07-13 22:05:47,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 488 transitions, 4987 flow [2022-07-13 22:05:47,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 488 transitions, 4849 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:47,791 INFO L242 Difference]: Finished difference. Result has 464 places, 443 transitions, 4245 flow [2022-07-13 22:05:47,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4245, PETRI_PLACES=464, PETRI_TRANSITIONS=443} [2022-07-13 22:05:47,792 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 250 predicate places. [2022-07-13 22:05:47,792 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 443 transitions, 4245 flow [2022-07-13 22:05:47,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,793 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,793 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:47,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:05:47,793 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)] === [2022-07-13 22:05:47,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1027007434, now seen corresponding path program 9 times [2022-07-13 22:05:47,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380795179] [2022-07-13 22:05:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:47,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380795179] [2022-07-13 22:05:47,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380795179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:47,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:47,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:47,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601564650] [2022-07-13 22:05:47,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:47,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:47,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:47,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:47,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:47,886 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:47,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 443 transitions, 4245 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:47,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:47,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:49,127 INFO L129 PetriNetUnfolder]: 1335/5528 cut-off events. [2022-07-13 22:05:49,127 INFO L130 PetriNetUnfolder]: For 31145/31341 co-relation queries the response was YES. [2022-07-13 22:05:49,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20662 conditions, 5528 events. 1335/5528 cut-off events. For 31145/31341 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 61055 event pairs, 695 based on Foata normal form. 24/5324 useless extension candidates. Maximal degree in co-relation 20544. Up to 1819 conditions per place. [2022-07-13 22:05:49,217 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 160 selfloop transitions, 117 changer transitions 23/496 dead transitions. [2022-07-13 22:05:49,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 496 transitions, 5379 flow [2022-07-13 22:05:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-13 22:05:49,221 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-13 22:05:49,221 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-13 22:05:49,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-13 22:05:49,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:49,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-13 22:05:49,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,229 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,229 INFO L186 Difference]: Start difference. First operand has 464 places, 443 transitions, 4245 flow. Second operand 18 states and 3593 transitions. [2022-07-13 22:05:49,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 496 transitions, 5379 flow [2022-07-13 22:05:49,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 496 transitions, 5187 flow, removed 96 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:49,457 INFO L242 Difference]: Finished difference. Result has 485 places, 453 transitions, 4557 flow [2022-07-13 22:05:49,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4557, PETRI_PLACES=485, PETRI_TRANSITIONS=453} [2022-07-13 22:05:49,458 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 271 predicate places. [2022-07-13 22:05:49,458 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 453 transitions, 4557 flow [2022-07-13 22:05:49,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,458 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:49,459 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:49,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:05:49,459 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)] === [2022-07-13 22:05:49,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash 331830240, now seen corresponding path program 10 times [2022-07-13 22:05:49,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:49,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667736887] [2022-07-13 22:05:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:49,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:49,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667736887] [2022-07-13 22:05:49,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667736887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:49,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379242970] [2022-07-13 22:05:49,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:49,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:49,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:49,547 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:49,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 453 transitions, 4557 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:49,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:50,920 INFO L129 PetriNetUnfolder]: 1368/5640 cut-off events. [2022-07-13 22:05:50,920 INFO L130 PetriNetUnfolder]: For 30503/30631 co-relation queries the response was YES. [2022-07-13 22:05:51,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21861 conditions, 5640 events. 1368/5640 cut-off events. For 30503/30631 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 63155 event pairs, 696 based on Foata normal form. 11/5411 useless extension candidates. Maximal degree in co-relation 21736. Up to 1869 conditions per place. [2022-07-13 22:05:51,022 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 188 selfloop transitions, 107 changer transitions 15/506 dead transitions. [2022-07-13 22:05:51,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 506 transitions, 5851 flow [2022-07-13 22:05:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-13 22:05:51,025 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-13 22:05:51,026 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-13 22:05:51,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-13 22:05:51,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:51,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-13 22:05:51,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,034 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,034 INFO L186 Difference]: Start difference. First operand has 485 places, 453 transitions, 4557 flow. Second operand 17 states and 3398 transitions. [2022-07-13 22:05:51,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 506 transitions, 5851 flow [2022-07-13 22:05:51,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 506 transitions, 5669 flow, removed 47 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:51,273 INFO L242 Difference]: Finished difference. Result has 504 places, 474 transitions, 5100 flow [2022-07-13 22:05:51,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5100, PETRI_PLACES=504, PETRI_TRANSITIONS=474} [2022-07-13 22:05:51,274 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 290 predicate places. [2022-07-13 22:05:51,274 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 474 transitions, 5100 flow [2022-07-13 22:05:51,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,274 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:51,274 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:51,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:05:51,275 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)] === [2022-07-13 22:05:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:51,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2122669658, now seen corresponding path program 11 times [2022-07-13 22:05:51,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:51,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275670836] [2022-07-13 22:05:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:51,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:51,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:51,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:51,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275670836] [2022-07-13 22:05:51,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275670836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:51,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:51,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:51,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77538077] [2022-07-13 22:05:51,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:51,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:51,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:51,367 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:51,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 474 transitions, 5100 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:51,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:51,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,640 INFO L129 PetriNetUnfolder]: 1375/5867 cut-off events. [2022-07-13 22:05:52,641 INFO L130 PetriNetUnfolder]: For 34876/35025 co-relation queries the response was YES. [2022-07-13 22:05:52,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22714 conditions, 5867 events. 1375/5867 cut-off events. For 34876/35025 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 66240 event pairs, 765 based on Foata normal form. 2/5620 useless extension candidates. Maximal degree in co-relation 22581. Up to 1891 conditions per place. [2022-07-13 22:05:52,729 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 173 selfloop transitions, 127 changer transitions 20/516 dead transitions. [2022-07-13 22:05:52,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 516 transitions, 6163 flow [2022-07-13 22:05:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-13 22:05:52,738 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-13 22:05:52,738 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-13 22:05:52,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-13 22:05:52,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:52,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-13 22:05:52,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,745 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,745 INFO L186 Difference]: Start difference. First operand has 504 places, 474 transitions, 5100 flow. Second operand 18 states and 3593 transitions. [2022-07-13 22:05:52,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 516 transitions, 6163 flow [2022-07-13 22:05:52,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 516 transitions, 5985 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:52,962 INFO L242 Difference]: Finished difference. Result has 523 places, 486 transitions, 5477 flow [2022-07-13 22:05:52,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4928, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5477, PETRI_PLACES=523, PETRI_TRANSITIONS=486} [2022-07-13 22:05:52,963 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 309 predicate places. [2022-07-13 22:05:52,963 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 486 transitions, 5477 flow [2022-07-13 22:05:52,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,964 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:52,964 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:52,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:05:52,964 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)] === [2022-07-13 22:05:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:52,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1393070102, now seen corresponding path program 12 times [2022-07-13 22:05:52,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:52,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437378756] [2022-07-13 22:05:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:52,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:53,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:53,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437378756] [2022-07-13 22:05:53,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437378756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:53,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:53,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:53,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931587080] [2022-07-13 22:05:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:53,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:53,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:53,043 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:53,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 486 transitions, 5477 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:53,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:53,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:54,396 INFO L129 PetriNetUnfolder]: 1370/5689 cut-off events. [2022-07-13 22:05:54,396 INFO L130 PetriNetUnfolder]: For 31921/32052 co-relation queries the response was YES. [2022-07-13 22:05:54,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22719 conditions, 5689 events. 1370/5689 cut-off events. For 31921/32052 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 63951 event pairs, 697 based on Foata normal form. 11/5461 useless extension candidates. Maximal degree in co-relation 22581. Up to 1881 conditions per place. [2022-07-13 22:05:54,495 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 191 selfloop transitions, 116 changer transitions 24/527 dead transitions. [2022-07-13 22:05:54,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 527 transitions, 6531 flow [2022-07-13 22:05:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3597 transitions. [2022-07-13 22:05:54,498 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850354609929078 [2022-07-13 22:05:54,498 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3597 transitions. [2022-07-13 22:05:54,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3597 transitions. [2022-07-13 22:05:54,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:54,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3597 transitions. [2022-07-13 22:05:54,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.83333333333334) internal successors, (3597), 18 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,511 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,511 INFO L186 Difference]: Start difference. First operand has 523 places, 486 transitions, 5477 flow. Second operand 18 states and 3597 transitions. [2022-07-13 22:05:54,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 527 transitions, 6531 flow [2022-07-13 22:05:54,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 527 transitions, 6394 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:54,795 INFO L242 Difference]: Finished difference. Result has 541 places, 495 transitions, 5838 flow [2022-07-13 22:05:54,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5346, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5838, PETRI_PLACES=541, PETRI_TRANSITIONS=495} [2022-07-13 22:05:54,796 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 327 predicate places. [2022-07-13 22:05:54,796 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 495 transitions, 5838 flow [2022-07-13 22:05:54,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,797 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:54,797 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:54,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:05:54,797 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)] === [2022-07-13 22:05:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash 869174098, now seen corresponding path program 13 times [2022-07-13 22:05:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:54,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613310520] [2022-07-13 22:05:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:54,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:54,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613310520] [2022-07-13 22:05:54,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613310520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:54,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:54,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:54,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802532702] [2022-07-13 22:05:54,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:54,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:54,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:54,879 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:54,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 495 transitions, 5838 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:54,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:54,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:56,213 INFO L129 PetriNetUnfolder]: 1468/6055 cut-off events. [2022-07-13 22:05:56,214 INFO L130 PetriNetUnfolder]: For 40574/40705 co-relation queries the response was YES. [2022-07-13 22:05:56,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25112 conditions, 6055 events. 1468/6055 cut-off events. For 40574/40705 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 68923 event pairs, 699 based on Foata normal form. 5/5832 useless extension candidates. Maximal degree in co-relation 24970. Up to 1920 conditions per place. [2022-07-13 22:05:56,309 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 215 selfloop transitions, 144 changer transitions 23/578 dead transitions. [2022-07-13 22:05:56,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 578 transitions, 7572 flow [2022-07-13 22:05:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4383 transitions. [2022-07-13 22:05:56,312 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8477756286266924 [2022-07-13 22:05:56,312 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4383 transitions. [2022-07-13 22:05:56,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4383 transitions. [2022-07-13 22:05:56,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:56,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4383 transitions. [2022-07-13 22:05:56,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.22727272727272) internal successors, (4383), 22 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,320 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,320 INFO L186 Difference]: Start difference. First operand has 541 places, 495 transitions, 5838 flow. Second operand 22 states and 4383 transitions. [2022-07-13 22:05:56,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 578 transitions, 7572 flow [2022-07-13 22:05:56,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 578 transitions, 7447 flow, removed 61 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:56,618 INFO L242 Difference]: Finished difference. Result has 571 places, 527 transitions, 6764 flow [2022-07-13 22:05:56,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6764, PETRI_PLACES=571, PETRI_TRANSITIONS=527} [2022-07-13 22:05:56,619 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 357 predicate places. [2022-07-13 22:05:56,619 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 527 transitions, 6764 flow [2022-07-13 22:05:56,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,619 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:56,619 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:56,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:05:56,620 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)] === [2022-07-13 22:05:56,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:56,620 INFO L85 PathProgramCache]: Analyzing trace with hash 173628278, now seen corresponding path program 14 times [2022-07-13 22:05:56,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:56,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802849463] [2022-07-13 22:05:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:56,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:56,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:56,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802849463] [2022-07-13 22:05:56,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802849463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:56,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:56,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:56,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723009921] [2022-07-13 22:05:56,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:56,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:56,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:56,692 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:56,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 527 transitions, 6764 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:56,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:56,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:58,183 INFO L129 PetriNetUnfolder]: 1502/6295 cut-off events. [2022-07-13 22:05:58,184 INFO L130 PetriNetUnfolder]: For 47419/47550 co-relation queries the response was YES. [2022-07-13 22:05:58,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27257 conditions, 6295 events. 1502/6295 cut-off events. For 47419/47550 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 72622 event pairs, 710 based on Foata normal form. 5/6063 useless extension candidates. Maximal degree in co-relation 27103. Up to 1945 conditions per place. [2022-07-13 22:05:58,298 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 270 selfloop transitions, 106 changer transitions 21/593 dead transitions. [2022-07-13 22:05:58,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 593 transitions, 8429 flow [2022-07-13 22:05:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4187 transitions. [2022-07-13 22:05:58,302 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8484295845997973 [2022-07-13 22:05:58,302 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4187 transitions. [2022-07-13 22:05:58,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4187 transitions. [2022-07-13 22:05:58,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:58,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4187 transitions. [2022-07-13 22:05:58,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.38095238095238) internal successors, (4187), 21 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,309 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,309 INFO L186 Difference]: Start difference. First operand has 571 places, 527 transitions, 6764 flow. Second operand 21 states and 4187 transitions. [2022-07-13 22:05:58,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 593 transitions, 8429 flow [2022-07-13 22:05:58,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 593 transitions, 8239 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:58,670 INFO L242 Difference]: Finished difference. Result has 601 places, 551 transitions, 7438 flow [2022-07-13 22:05:58,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6588, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7438, PETRI_PLACES=601, PETRI_TRANSITIONS=551} [2022-07-13 22:05:58,671 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 387 predicate places. [2022-07-13 22:05:58,671 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 551 transitions, 7438 flow [2022-07-13 22:05:58,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,671 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:58,672 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:58,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:05:58,672 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)] === [2022-07-13 22:05:58,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:58,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1231041606, now seen corresponding path program 15 times [2022-07-13 22:05:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:58,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871286215] [2022-07-13 22:05:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:58,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:58,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871286215] [2022-07-13 22:05:58,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871286215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:58,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:58,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:58,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869997511] [2022-07-13 22:05:58,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:58,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:58,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:58,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:58,743 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:05:58,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 551 transitions, 7438 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:58,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:05:58,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:00,215 INFO L129 PetriNetUnfolder]: 1525/6442 cut-off events. [2022-07-13 22:06:00,215 INFO L130 PetriNetUnfolder]: For 52156/52287 co-relation queries the response was YES. [2022-07-13 22:06:00,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28522 conditions, 6442 events. 1525/6442 cut-off events. For 52156/52287 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 75161 event pairs, 702 based on Foata normal form. 5/6217 useless extension candidates. Maximal degree in co-relation 28355. Up to 2016 conditions per place. [2022-07-13 22:06:00,321 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 236 selfloop transitions, 162 changer transitions 18/612 dead transitions. [2022-07-13 22:06:00,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 612 transitions, 8986 flow [2022-07-13 22:06:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-13 22:06:00,324 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-13 22:06:00,324 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-13 22:06:00,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-13 22:06:00,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:00,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-13 22:06:00,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,330 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,330 INFO L186 Difference]: Start difference. First operand has 601 places, 551 transitions, 7438 flow. Second operand 18 states and 3593 transitions. [2022-07-13 22:06:00,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 612 transitions, 8986 flow [2022-07-13 22:06:00,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 612 transitions, 8796 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:00,771 INFO L242 Difference]: Finished difference. Result has 622 places, 572 transitions, 8094 flow [2022-07-13 22:06:00,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7250, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8094, PETRI_PLACES=622, PETRI_TRANSITIONS=572} [2022-07-13 22:06:00,773 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 408 predicate places. [2022-07-13 22:06:00,773 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 572 transitions, 8094 flow [2022-07-13 22:06:00,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,773 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:00,773 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:00,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:06:00,774 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)] === [2022-07-13 22:06:00,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash 787764488, now seen corresponding path program 16 times [2022-07-13 22:06:00,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:00,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584506236] [2022-07-13 22:06:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:00,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:00,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:00,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584506236] [2022-07-13 22:06:00,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584506236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:00,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:00,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:00,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119341674] [2022-07-13 22:06:00,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:00,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:00,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:00,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:00,854 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:00,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 572 transitions, 8094 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:00,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:00,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:03,059 INFO L129 PetriNetUnfolder]: 1580/6607 cut-off events. [2022-07-13 22:06:03,060 INFO L130 PetriNetUnfolder]: For 57093/57224 co-relation queries the response was YES. [2022-07-13 22:06:03,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30514 conditions, 6607 events. 1580/6607 cut-off events. For 57093/57224 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 77398 event pairs, 713 based on Foata normal form. 5/6374 useless extension candidates. Maximal degree in co-relation 30340. Up to 2059 conditions per place. [2022-07-13 22:06:03,200 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 280 selfloop transitions, 135 changer transitions 16/627 dead transitions. [2022-07-13 22:06:03,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 627 transitions, 9692 flow [2022-07-13 22:06:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:06:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:06:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-13 22:06:03,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-13 22:06:03,203 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-13 22:06:03,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-13 22:06:03,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:03,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-13 22:06:03,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,209 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,209 INFO L186 Difference]: Start difference. First operand has 622 places, 572 transitions, 8094 flow. Second operand 17 states and 3397 transitions. [2022-07-13 22:06:03,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 627 transitions, 9692 flow [2022-07-13 22:06:03,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 627 transitions, 9474 flow, removed 109 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:03,811 INFO L242 Difference]: Finished difference. Result has 643 places, 593 transitions, 8730 flow [2022-07-13 22:06:03,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7920, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8730, PETRI_PLACES=643, PETRI_TRANSITIONS=593} [2022-07-13 22:06:03,812 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 429 predicate places. [2022-07-13 22:06:03,812 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 593 transitions, 8730 flow [2022-07-13 22:06:03,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,813 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:03,813 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:03,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:06:03,813 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)] === [2022-07-13 22:06:03,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:03,814 INFO L85 PathProgramCache]: Analyzing trace with hash 340551250, now seen corresponding path program 17 times [2022-07-13 22:06:03,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:03,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899439899] [2022-07-13 22:06:03,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:03,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:03,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:03,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899439899] [2022-07-13 22:06:03,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899439899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:03,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:03,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:03,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631085113] [2022-07-13 22:06:03,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:03,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:03,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:03,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:03,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:03,900 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:03,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 593 transitions, 8730 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:03,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:03,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:06,200 INFO L129 PetriNetUnfolder]: 1603/6826 cut-off events. [2022-07-13 22:06:06,200 INFO L130 PetriNetUnfolder]: For 61184/61315 co-relation queries the response was YES. [2022-07-13 22:06:06,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31933 conditions, 6826 events. 1603/6826 cut-off events. For 61184/61315 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81044 event pairs, 710 based on Foata normal form. 5/6592 useless extension candidates. Maximal degree in co-relation 31751. Up to 2094 conditions per place. [2022-07-13 22:06:06,400 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 305 selfloop transitions, 127 changer transitions 17/645 dead transitions. [2022-07-13 22:06:06,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 645 transitions, 10337 flow [2022-07-13 22:06:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-13 22:06:06,404 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-13 22:06:06,404 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-13 22:06:06,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-13 22:06:06,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:06,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-13 22:06:06,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,410 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,410 INFO L186 Difference]: Start difference. First operand has 643 places, 593 transitions, 8730 flow. Second operand 18 states and 3596 transitions. [2022-07-13 22:06:06,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 645 transitions, 10337 flow [2022-07-13 22:06:07,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 645 transitions, 10203 flow, removed 67 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:07,268 INFO L242 Difference]: Finished difference. Result has 664 places, 612 transitions, 9395 flow [2022-07-13 22:06:07,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8600, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9395, PETRI_PLACES=664, PETRI_TRANSITIONS=612} [2022-07-13 22:06:07,269 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 450 predicate places. [2022-07-13 22:06:07,269 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 612 transitions, 9395 flow [2022-07-13 22:06:07,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:07,270 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:07,270 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:07,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:06:07,270 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)] === [2022-07-13 22:06:07,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:07,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1026103542, now seen corresponding path program 18 times [2022-07-13 22:06:07,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:07,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004428153] [2022-07-13 22:06:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:07,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:07,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:07,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004428153] [2022-07-13 22:06:07,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004428153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:07,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:07,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:07,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208714344] [2022-07-13 22:06:07,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:07,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:07,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:07,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:07,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:07,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 612 transitions, 9395 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:07,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:07,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:07,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:09,778 INFO L129 PetriNetUnfolder]: 1606/6864 cut-off events. [2022-07-13 22:06:09,778 INFO L130 PetriNetUnfolder]: For 64603/64734 co-relation queries the response was YES. [2022-07-13 22:06:09,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32733 conditions, 6864 events. 1606/6864 cut-off events. For 64603/64734 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81596 event pairs, 704 based on Foata normal form. 5/6641 useless extension candidates. Maximal degree in co-relation 32544. Up to 2120 conditions per place. [2022-07-13 22:06:09,901 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 260 selfloop transitions, 179 changer transitions 22/657 dead transitions. [2022-07-13 22:06:09,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 657 transitions, 10708 flow [2022-07-13 22:06:09,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:06:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:06:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3201 transitions. [2022-07-13 22:06:09,905 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513297872340425 [2022-07-13 22:06:09,905 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3201 transitions. [2022-07-13 22:06:09,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3201 transitions. [2022-07-13 22:06:09,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:09,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3201 transitions. [2022-07-13 22:06:09,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.0625) internal successors, (3201), 16 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:09,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:09,911 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:09,911 INFO L186 Difference]: Start difference. First operand has 664 places, 612 transitions, 9395 flow. Second operand 16 states and 3201 transitions. [2022-07-13 22:06:09,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 657 transitions, 10708 flow [2022-07-13 22:06:10,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 657 transitions, 10536 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:10,561 INFO L242 Difference]: Finished difference. Result has 682 places, 620 transitions, 9803 flow [2022-07-13 22:06:10,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9225, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9803, PETRI_PLACES=682, PETRI_TRANSITIONS=620} [2022-07-13 22:06:10,562 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 468 predicate places. [2022-07-13 22:06:10,562 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 620 transitions, 9803 flow [2022-07-13 22:06:10,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:10,563 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:10,563 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:10,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:06:10,563 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)] === [2022-07-13 22:06:10,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash 157105292, now seen corresponding path program 19 times [2022-07-13 22:06:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:10,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826923934] [2022-07-13 22:06:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:10,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:10,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:10,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:10,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826923934] [2022-07-13 22:06:10,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826923934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:10,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:10,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:10,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494294421] [2022-07-13 22:06:10,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:10,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:10,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:10,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:10,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:10,630 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:10,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 620 transitions, 9803 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:10,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:10,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:10,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:12,878 INFO L129 PetriNetUnfolder]: 1625/7174 cut-off events. [2022-07-13 22:06:12,878 INFO L130 PetriNetUnfolder]: For 70157/70288 co-relation queries the response was YES. [2022-07-13 22:06:12,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34320 conditions, 7174 events. 1625/7174 cut-off events. For 70157/70288 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 87072 event pairs, 717 based on Foata normal form. 5/6940 useless extension candidates. Maximal degree in co-relation 34125. Up to 2141 conditions per place. [2022-07-13 22:06:12,999 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 312 selfloop transitions, 135 changer transitions 22/665 dead transitions. [2022-07-13 22:06:13,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 665 transitions, 11273 flow [2022-07-13 22:06:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:06:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:06:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3401 transitions. [2022-07-13 22:06:13,003 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513141426783479 [2022-07-13 22:06:13,003 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3401 transitions. [2022-07-13 22:06:13,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3401 transitions. [2022-07-13 22:06:13,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:13,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3401 transitions. [2022-07-13 22:06:13,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 200.05882352941177) internal successors, (3401), 17 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,008 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,009 INFO L186 Difference]: Start difference. First operand has 682 places, 620 transitions, 9803 flow. Second operand 17 states and 3401 transitions. [2022-07-13 22:06:13,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 665 transitions, 11273 flow [2022-07-13 22:06:13,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 665 transitions, 10968 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-13 22:06:13,540 INFO L242 Difference]: Finished difference. Result has 698 places, 633 transitions, 10169 flow [2022-07-13 22:06:13,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9518, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10169, PETRI_PLACES=698, PETRI_TRANSITIONS=633} [2022-07-13 22:06:13,541 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 484 predicate places. [2022-07-13 22:06:13,542 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 633 transitions, 10169 flow [2022-07-13 22:06:13,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:13,542 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:13,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:06:13,542 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)] === [2022-07-13 22:06:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:13,543 INFO L85 PathProgramCache]: Analyzing trace with hash 573914000, now seen corresponding path program 20 times [2022-07-13 22:06:13,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:13,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496753609] [2022-07-13 22:06:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:13,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:13,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:13,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496753609] [2022-07-13 22:06:13,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496753609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:13,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:13,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:13,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456545191] [2022-07-13 22:06:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:13,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:13,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:13,605 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:13,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 633 transitions, 10169 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:13,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:13,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:15,819 INFO L129 PetriNetUnfolder]: 1625/7156 cut-off events. [2022-07-13 22:06:15,819 INFO L130 PetriNetUnfolder]: For 70851/70982 co-relation queries the response was YES. [2022-07-13 22:06:16,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34388 conditions, 7156 events. 1625/7156 cut-off events. For 70851/70982 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 86615 event pairs, 710 based on Foata normal form. 5/6929 useless extension candidates. Maximal degree in co-relation 34188. Up to 2137 conditions per place. [2022-07-13 22:06:16,018 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 298 selfloop transitions, 153 changer transitions 27/674 dead transitions. [2022-07-13 22:06:16,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 674 transitions, 11514 flow [2022-07-13 22:06:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-13 22:06:16,021 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-13 22:06:16,021 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-13 22:06:16,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-13 22:06:16,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:16,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-13 22:06:16,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,026 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,027 INFO L186 Difference]: Start difference. First operand has 698 places, 633 transitions, 10169 flow. Second operand 18 states and 3596 transitions. [2022-07-13 22:06:16,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 674 transitions, 11514 flow [2022-07-13 22:06:16,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 674 transitions, 11345 flow, removed 48 selfloop flow, removed 3 redundant places. [2022-07-13 22:06:16,544 INFO L242 Difference]: Finished difference. Result has 717 places, 642 transitions, 10587 flow [2022-07-13 22:06:16,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10004, PETRI_DIFFERENCE_MINUEND_PLACES=693, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10587, PETRI_PLACES=717, PETRI_TRANSITIONS=642} [2022-07-13 22:06:16,545 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 503 predicate places. [2022-07-13 22:06:16,545 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 642 transitions, 10587 flow [2022-07-13 22:06:16,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,545 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:16,546 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:16,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:06:16,546 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)] === [2022-07-13 22:06:16,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:16,546 INFO L85 PathProgramCache]: Analyzing trace with hash 324066382, now seen corresponding path program 1 times [2022-07-13 22:06:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:16,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092517634] [2022-07-13 22:06:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:16,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:16,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:16,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092517634] [2022-07-13 22:06:16,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092517634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:16,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:16,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:16,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917249355] [2022-07-13 22:06:16,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:16,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:16,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:16,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:16,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:16,600 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:16,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 642 transitions, 10587 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:16,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:16,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:18,794 INFO L129 PetriNetUnfolder]: 1623/6822 cut-off events. [2022-07-13 22:06:18,795 INFO L130 PetriNetUnfolder]: For 75736/75863 co-relation queries the response was YES. [2022-07-13 22:06:18,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34239 conditions, 6822 events. 1623/6822 cut-off events. For 75736/75863 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 81227 event pairs, 205 based on Foata normal form. 3/6618 useless extension candidates. Maximal degree in co-relation 34034. Up to 2437 conditions per place. [2022-07-13 22:06:18,904 INFO L132 encePairwiseOnDemand]: 220/235 looper letters, 439 selfloop transitions, 88 changer transitions 18/739 dead transitions. [2022-07-13 22:06:18,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 739 transitions, 12323 flow [2022-07-13 22:06:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:06:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:06:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3227 transitions. [2022-07-13 22:06:18,906 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8582446808510639 [2022-07-13 22:06:18,907 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3227 transitions. [2022-07-13 22:06:18,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3227 transitions. [2022-07-13 22:06:18,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:18,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3227 transitions. [2022-07-13 22:06:18,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 201.6875) internal successors, (3227), 16 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,911 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,911 INFO L186 Difference]: Start difference. First operand has 717 places, 642 transitions, 10587 flow. Second operand 16 states and 3227 transitions. [2022-07-13 22:06:18,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 739 transitions, 12323 flow [2022-07-13 22:06:19,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 739 transitions, 12121 flow, removed 62 selfloop flow, removed 4 redundant places. [2022-07-13 22:06:19,465 INFO L242 Difference]: Finished difference. Result has 738 places, 675 transitions, 10939 flow [2022-07-13 22:06:19,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10393, PETRI_DIFFERENCE_MINUEND_PLACES=711, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10939, PETRI_PLACES=738, PETRI_TRANSITIONS=675} [2022-07-13 22:06:19,466 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 524 predicate places. [2022-07-13 22:06:19,466 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 675 transitions, 10939 flow [2022-07-13 22:06:19,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:19,467 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:19,467 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:19,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:06:19,467 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)] === [2022-07-13 22:06:19,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash 809221024, now seen corresponding path program 1 times [2022-07-13 22:06:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:19,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254672341] [2022-07-13 22:06:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:19,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254672341] [2022-07-13 22:06:19,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254672341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:19,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:19,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:06:19,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821628453] [2022-07-13 22:06:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:19,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:06:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:06:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:06:19,511 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-13 22:06:19,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 675 transitions, 10939 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:19,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:19,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-13 22:06:19,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:20,437 INFO L129 PetriNetUnfolder]: 453/3449 cut-off events. [2022-07-13 22:06:20,437 INFO L130 PetriNetUnfolder]: For 37902/38341 co-relation queries the response was YES. [2022-07-13 22:06:20,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15939 conditions, 3449 events. 453/3449 cut-off events. For 37902/38341 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 35890 event pairs, 39 based on Foata normal form. 23/3358 useless extension candidates. Maximal degree in co-relation 15725. Up to 339 conditions per place. [2022-07-13 22:06:20,512 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 19 selfloop transitions, 0 changer transitions 475/695 dead transitions. [2022-07-13 22:06:20,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 695 transitions, 11076 flow [2022-07-13 22:06:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:06:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:06:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-13 22:06:20,514 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-13 22:06:20,514 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-13 22:06:20,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-13 22:06:20,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:20,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-13 22:06:20,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,517 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,517 INFO L186 Difference]: Start difference. First operand has 738 places, 675 transitions, 10939 flow. Second operand 9 states and 1861 transitions. [2022-07-13 22:06:20,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 695 transitions, 11076 flow [2022-07-13 22:06:20,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 695 transitions, 10500 flow, removed 132 selfloop flow, removed 62 redundant places. [2022-07-13 22:06:20,944 INFO L242 Difference]: Finished difference. Result has 688 places, 220 transitions, 786 flow [2022-07-13 22:06:20,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10363, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=786, PETRI_PLACES=688, PETRI_TRANSITIONS=220} [2022-07-13 22:06:20,945 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 474 predicate places. [2022-07-13 22:06:20,946 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 220 transitions, 786 flow [2022-07-13 22:06:20,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,946 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:20,946 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:20,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:06:20,946 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:20,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1449884105, now seen corresponding path program 1 times [2022-07-13 22:06:20,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:20,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75843970] [2022-07-13 22:06:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:20,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:21,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:21,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75843970] [2022-07-13 22:06:21,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75843970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:21,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:21,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:21,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684446189] [2022-07-13 22:06:21,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:21,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:21,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:21,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:21,024 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:21,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 220 transitions, 786 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:21,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:21,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:21,545 INFO L129 PetriNetUnfolder]: 460/1907 cut-off events. [2022-07-13 22:06:21,545 INFO L130 PetriNetUnfolder]: For 5592/5633 co-relation queries the response was YES. [2022-07-13 22:06:21,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5251 conditions, 1907 events. 460/1907 cut-off events. For 5592/5633 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15090 event pairs, 190 based on Foata normal form. 11/1809 useless extension candidates. Maximal degree in co-relation 5091. Up to 486 conditions per place. [2022-07-13 22:06:21,577 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 86 selfloop transitions, 33 changer transitions 28/328 dead transitions. [2022-07-13 22:06:21,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 328 transitions, 1567 flow [2022-07-13 22:06:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:06:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:06:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4790 transitions. [2022-07-13 22:06:21,580 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.849290780141844 [2022-07-13 22:06:21,580 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4790 transitions. [2022-07-13 22:06:21,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4790 transitions. [2022-07-13 22:06:21,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:21,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4790 transitions. [2022-07-13 22:06:21,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.58333333333334) internal successors, (4790), 24 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,587 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,587 INFO L186 Difference]: Start difference. First operand has 688 places, 220 transitions, 786 flow. Second operand 24 states and 4790 transitions. [2022-07-13 22:06:21,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 328 transitions, 1567 flow [2022-07-13 22:06:21,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 1265 flow, removed 123 selfloop flow, removed 72 redundant places. [2022-07-13 22:06:21,607 INFO L242 Difference]: Finished difference. Result has 353 places, 250 transitions, 880 flow [2022-07-13 22:06:21,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=880, PETRI_PLACES=353, PETRI_TRANSITIONS=250} [2022-07-13 22:06:21,608 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 139 predicate places. [2022-07-13 22:06:21,608 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 250 transitions, 880 flow [2022-07-13 22:06:21,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:21,609 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:21,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 22:06:21,609 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:21,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1247485979, now seen corresponding path program 2 times [2022-07-13 22:06:21,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:21,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343910542] [2022-07-13 22:06:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:21,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:21,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:21,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343910542] [2022-07-13 22:06:21,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343910542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:21,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:21,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:21,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356675854] [2022-07-13 22:06:21,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:21,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:21,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:21,690 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:21,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 250 transitions, 880 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:21,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:21,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:22,212 INFO L129 PetriNetUnfolder]: 533/2184 cut-off events. [2022-07-13 22:06:22,212 INFO L130 PetriNetUnfolder]: For 4210/4251 co-relation queries the response was YES. [2022-07-13 22:06:22,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 2184 events. 533/2184 cut-off events. For 4210/4251 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17856 event pairs, 251 based on Foata normal form. 7/2037 useless extension candidates. Maximal degree in co-relation 6228. Up to 673 conditions per place. [2022-07-13 22:06:22,247 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 85 selfloop transitions, 36 changer transitions 16/318 dead transitions. [2022-07-13 22:06:22,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 318 transitions, 1593 flow [2022-07-13 22:06:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:06:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:06:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-07-13 22:06:22,250 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-07-13 22:06:22,250 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-07-13 22:06:22,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-07-13 22:06:22,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:22,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-07-13 22:06:22,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.875) internal successors, (3198), 16 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,254 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,255 INFO L186 Difference]: Start difference. First operand has 353 places, 250 transitions, 880 flow. Second operand 16 states and 3198 transitions. [2022-07-13 22:06:22,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 318 transitions, 1593 flow [2022-07-13 22:06:22,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 318 transitions, 1553 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:22,272 INFO L242 Difference]: Finished difference. Result has 375 places, 274 transitions, 1236 flow [2022-07-13 22:06:22,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1236, PETRI_PLACES=375, PETRI_TRANSITIONS=274} [2022-07-13 22:06:22,273 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 161 predicate places. [2022-07-13 22:06:22,273 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 274 transitions, 1236 flow [2022-07-13 22:06:22,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,274 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:22,274 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:22,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 22:06:22,274 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:22,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:22,275 INFO L85 PathProgramCache]: Analyzing trace with hash -582070785, now seen corresponding path program 3 times [2022-07-13 22:06:22,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:22,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677653847] [2022-07-13 22:06:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:22,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:22,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:22,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677653847] [2022-07-13 22:06:22,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677653847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:22,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:22,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:22,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927495472] [2022-07-13 22:06:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:22,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:22,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:22,352 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:22,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 274 transitions, 1236 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:22,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:22,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:22,900 INFO L129 PetriNetUnfolder]: 597/2436 cut-off events. [2022-07-13 22:06:22,900 INFO L130 PetriNetUnfolder]: For 8402/8560 co-relation queries the response was YES. [2022-07-13 22:06:22,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8209 conditions, 2436 events. 597/2436 cut-off events. For 8402/8560 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 20896 event pairs, 223 based on Foata normal form. 18/2293 useless extension candidates. Maximal degree in co-relation 8079. Up to 687 conditions per place. [2022-07-13 22:06:22,930 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 108 selfloop transitions, 45 changer transitions 14/348 dead transitions. [2022-07-13 22:06:22,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 348 transitions, 2213 flow [2022-07-13 22:06:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:06:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:06:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3197 transitions. [2022-07-13 22:06:22,932 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8502659574468086 [2022-07-13 22:06:22,932 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3197 transitions. [2022-07-13 22:06:22,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3197 transitions. [2022-07-13 22:06:22,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:22,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3197 transitions. [2022-07-13 22:06:22,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.8125) internal successors, (3197), 16 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,936 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,936 INFO L186 Difference]: Start difference. First operand has 375 places, 274 transitions, 1236 flow. Second operand 16 states and 3197 transitions. [2022-07-13 22:06:22,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 348 transitions, 2213 flow [2022-07-13 22:06:22,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 348 transitions, 1987 flow, removed 113 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:22,974 INFO L242 Difference]: Finished difference. Result has 396 places, 294 transitions, 1467 flow [2022-07-13 22:06:22,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1467, PETRI_PLACES=396, PETRI_TRANSITIONS=294} [2022-07-13 22:06:22,975 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 182 predicate places. [2022-07-13 22:06:22,975 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 294 transitions, 1467 flow [2022-07-13 22:06:22,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,975 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:22,976 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:22,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 22:06:22,976 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1454581957, now seen corresponding path program 4 times [2022-07-13 22:06:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:22,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983888574] [2022-07-13 22:06:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:22,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:23,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:23,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983888574] [2022-07-13 22:06:23,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983888574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:23,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:23,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:23,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306357881] [2022-07-13 22:06:23,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:23,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:23,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:23,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:23,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:23,059 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:23,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 294 transitions, 1467 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:23,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:23,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:23,736 INFO L129 PetriNetUnfolder]: 742/2909 cut-off events. [2022-07-13 22:06:23,736 INFO L130 PetriNetUnfolder]: For 12491/12688 co-relation queries the response was YES. [2022-07-13 22:06:23,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10561 conditions, 2909 events. 742/2909 cut-off events. For 12491/12688 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 26182 event pairs, 318 based on Foata normal form. 7/2716 useless extension candidates. Maximal degree in co-relation 10422. Up to 741 conditions per place. [2022-07-13 22:06:23,863 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 130 selfloop transitions, 50 changer transitions 23/384 dead transitions. [2022-07-13 22:06:23,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 384 transitions, 2746 flow [2022-07-13 22:06:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:06:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:06:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4189 transitions. [2022-07-13 22:06:23,867 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8488348530901723 [2022-07-13 22:06:23,868 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4189 transitions. [2022-07-13 22:06:23,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4189 transitions. [2022-07-13 22:06:23,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:23,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4189 transitions. [2022-07-13 22:06:23,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.47619047619048) internal successors, (4189), 21 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,875 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,875 INFO L186 Difference]: Start difference. First operand has 396 places, 294 transitions, 1467 flow. Second operand 21 states and 4189 transitions. [2022-07-13 22:06:23,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 384 transitions, 2746 flow [2022-07-13 22:06:23,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 384 transitions, 2602 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-13 22:06:23,933 INFO L242 Difference]: Finished difference. Result has 426 places, 328 transitions, 2034 flow [2022-07-13 22:06:23,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2034, PETRI_PLACES=426, PETRI_TRANSITIONS=328} [2022-07-13 22:06:23,934 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 212 predicate places. [2022-07-13 22:06:23,934 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 328 transitions, 2034 flow [2022-07-13 22:06:23,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,934 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:23,934 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:23,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 22:06:23,935 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:23,935 INFO L85 PathProgramCache]: Analyzing trace with hash -897077963, now seen corresponding path program 5 times [2022-07-13 22:06:23,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:23,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406000097] [2022-07-13 22:06:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:23,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:24,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:24,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406000097] [2022-07-13 22:06:24,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406000097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:24,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:24,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:24,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117089156] [2022-07-13 22:06:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:24,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:24,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:24,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:24,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:24,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:24,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 328 transitions, 2034 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:24,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:24,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:24,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:24,784 INFO L129 PetriNetUnfolder]: 784/3115 cut-off events. [2022-07-13 22:06:24,784 INFO L130 PetriNetUnfolder]: For 19730/19811 co-relation queries the response was YES. [2022-07-13 22:06:24,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12420 conditions, 3115 events. 784/3115 cut-off events. For 19730/19811 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 28929 event pairs, 303 based on Foata normal form. 15/2913 useless extension candidates. Maximal degree in co-relation 12268. Up to 811 conditions per place. [2022-07-13 22:06:24,842 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 141 selfloop transitions, 60 changer transitions 22/404 dead transitions. [2022-07-13 22:06:24,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 404 transitions, 3334 flow [2022-07-13 22:06:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:06:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:06:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3990 transitions. [2022-07-13 22:06:24,844 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2022-07-13 22:06:24,844 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3990 transitions. [2022-07-13 22:06:24,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3990 transitions. [2022-07-13 22:06:24,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:24,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3990 transitions. [2022-07-13 22:06:24,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.5) internal successors, (3990), 20 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:24,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:24,950 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:24,950 INFO L186 Difference]: Start difference. First operand has 426 places, 328 transitions, 2034 flow. Second operand 20 states and 3990 transitions. [2022-07-13 22:06:24,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 404 transitions, 3334 flow [2022-07-13 22:06:25,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 404 transitions, 3006 flow, removed 164 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:25,044 INFO L242 Difference]: Finished difference. Result has 456 places, 360 transitions, 2475 flow [2022-07-13 22:06:25,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2475, PETRI_PLACES=456, PETRI_TRANSITIONS=360} [2022-07-13 22:06:25,044 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 242 predicate places. [2022-07-13 22:06:25,044 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 360 transitions, 2475 flow [2022-07-13 22:06:25,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:25,045 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:25,045 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:25,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 22:06:25,045 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:25,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2122342847, now seen corresponding path program 6 times [2022-07-13 22:06:25,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:25,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548342734] [2022-07-13 22:06:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:25,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:25,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:25,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548342734] [2022-07-13 22:06:25,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548342734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:25,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:25,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14677340] [2022-07-13 22:06:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:25,138 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:25,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 360 transitions, 2475 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:25,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:25,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:25,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:26,143 INFO L129 PetriNetUnfolder]: 829/3326 cut-off events. [2022-07-13 22:06:26,143 INFO L130 PetriNetUnfolder]: For 23646/23720 co-relation queries the response was YES. [2022-07-13 22:06:26,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13646 conditions, 3326 events. 829/3326 cut-off events. For 23646/23720 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 31412 event pairs, 244 based on Foata normal form. 7/3108 useless extension candidates. Maximal degree in co-relation 13480. Up to 578 conditions per place. [2022-07-13 22:06:26,199 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 155 selfloop transitions, 103 changer transitions 26/465 dead transitions. [2022-07-13 22:06:26,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 465 transitions, 4043 flow [2022-07-13 22:06:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:06:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:06:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4782 transitions. [2022-07-13 22:06:26,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.847872340425532 [2022-07-13 22:06:26,203 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4782 transitions. [2022-07-13 22:06:26,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4782 transitions. [2022-07-13 22:06:26,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:26,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4782 transitions. [2022-07-13 22:06:26,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.25) internal successors, (4782), 24 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,210 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,211 INFO L186 Difference]: Start difference. First operand has 456 places, 360 transitions, 2475 flow. Second operand 24 states and 4782 transitions. [2022-07-13 22:06:26,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 465 transitions, 4043 flow [2022-07-13 22:06:26,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 465 transitions, 3739 flow, removed 152 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:26,339 INFO L242 Difference]: Finished difference. Result has 494 places, 386 transitions, 2979 flow [2022-07-13 22:06:26,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2979, PETRI_PLACES=494, PETRI_TRANSITIONS=386} [2022-07-13 22:06:26,339 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 280 predicate places. [2022-07-13 22:06:26,339 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 386 transitions, 2979 flow [2022-07-13 22:06:26,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,340 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:26,340 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:26,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 22:06:26,340 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1817715829, now seen corresponding path program 7 times [2022-07-13 22:06:26,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:26,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353158963] [2022-07-13 22:06:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:26,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:26,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:26,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353158963] [2022-07-13 22:06:26,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353158963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:26,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:26,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:26,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347635765] [2022-07-13 22:06:26,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:26,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:26,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:26,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:26,422 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:26,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 386 transitions, 2979 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:26,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:26,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:27,491 INFO L129 PetriNetUnfolder]: 863/3579 cut-off events. [2022-07-13 22:06:27,492 INFO L130 PetriNetUnfolder]: For 30286/30599 co-relation queries the response was YES. [2022-07-13 22:06:27,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15153 conditions, 3579 events. 863/3579 cut-off events. For 30286/30599 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 34456 event pairs, 249 based on Foata normal form. 40/3382 useless extension candidates. Maximal degree in co-relation 14969. Up to 875 conditions per place. [2022-07-13 22:06:27,564 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 166 selfloop transitions, 97 changer transitions 24/468 dead transitions. [2022-07-13 22:06:27,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 468 transitions, 4508 flow [2022-07-13 22:06:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:06:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:06:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4384 transitions. [2022-07-13 22:06:27,571 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8479690522243714 [2022-07-13 22:06:27,571 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4384 transitions. [2022-07-13 22:06:27,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4384 transitions. [2022-07-13 22:06:27,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:27,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4384 transitions. [2022-07-13 22:06:27,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.27272727272728) internal successors, (4384), 22 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,577 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,577 INFO L186 Difference]: Start difference. First operand has 494 places, 386 transitions, 2979 flow. Second operand 22 states and 4384 transitions. [2022-07-13 22:06:27,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 468 transitions, 4508 flow [2022-07-13 22:06:27,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 468 transitions, 4438 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-07-13 22:06:27,718 INFO L242 Difference]: Finished difference. Result has 523 places, 410 transitions, 3643 flow [2022-07-13 22:06:27,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3643, PETRI_PLACES=523, PETRI_TRANSITIONS=410} [2022-07-13 22:06:27,720 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 309 predicate places. [2022-07-13 22:06:27,720 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 410 transitions, 3643 flow [2022-07-13 22:06:27,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:27,720 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:27,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 22:06:27,721 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2059723653, now seen corresponding path program 8 times [2022-07-13 22:06:27,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:27,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301176938] [2022-07-13 22:06:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:27,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:27,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:27,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301176938] [2022-07-13 22:06:27,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301176938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:27,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:27,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:27,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576599099] [2022-07-13 22:06:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:27,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:27,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:27,804 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:27,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 410 transitions, 3643 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:27,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:27,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:28,933 INFO L129 PetriNetUnfolder]: 902/3737 cut-off events. [2022-07-13 22:06:28,933 INFO L130 PetriNetUnfolder]: For 39164/39246 co-relation queries the response was YES. [2022-07-13 22:06:28,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17114 conditions, 3737 events. 902/3737 cut-off events. For 39164/39246 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 36997 event pairs, 270 based on Foata normal form. 18/3496 useless extension candidates. Maximal degree in co-relation 16919. Up to 977 conditions per place. [2022-07-13 22:06:29,003 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 182 selfloop transitions, 105 changer transitions 19/487 dead transitions. [2022-07-13 22:06:29,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 487 transitions, 5223 flow [2022-07-13 22:06:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:06:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:06:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3987 transitions. [2022-07-13 22:06:29,006 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8482978723404255 [2022-07-13 22:06:29,006 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3987 transitions. [2022-07-13 22:06:29,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3987 transitions. [2022-07-13 22:06:29,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:29,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3987 transitions. [2022-07-13 22:06:29,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.35) internal successors, (3987), 20 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,011 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,012 INFO L186 Difference]: Start difference. First operand has 523 places, 410 transitions, 3643 flow. Second operand 20 states and 3987 transitions. [2022-07-13 22:06:29,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 487 transitions, 5223 flow [2022-07-13 22:06:29,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 487 transitions, 5018 flow, removed 95 selfloop flow, removed 4 redundant places. [2022-07-13 22:06:29,212 INFO L242 Difference]: Finished difference. Result has 550 places, 442 transitions, 4444 flow [2022-07-13 22:06:29,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4444, PETRI_PLACES=550, PETRI_TRANSITIONS=442} [2022-07-13 22:06:29,213 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 336 predicate places. [2022-07-13 22:06:29,213 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 442 transitions, 4444 flow [2022-07-13 22:06:29,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,215 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:29,216 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:29,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 22:06:29,216 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:29,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1477857535, now seen corresponding path program 9 times [2022-07-13 22:06:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:29,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771750024] [2022-07-13 22:06:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:29,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:29,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:29,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771750024] [2022-07-13 22:06:29,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771750024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:29,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:29,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:29,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596188140] [2022-07-13 22:06:29,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:29,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:29,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:29,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:29,302 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:29,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 442 transitions, 4444 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:29,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:29,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:30,468 INFO L129 PetriNetUnfolder]: 899/3813 cut-off events. [2022-07-13 22:06:30,469 INFO L130 PetriNetUnfolder]: For 42823/43110 co-relation queries the response was YES. [2022-07-13 22:06:30,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17843 conditions, 3813 events. 899/3813 cut-off events. For 42823/43110 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 37696 event pairs, 258 based on Foata normal form. 32/3586 useless extension candidates. Maximal degree in co-relation 17637. Up to 971 conditions per place. [2022-07-13 22:06:30,547 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 183 selfloop transitions, 116 changer transitions 23/503 dead transitions. [2022-07-13 22:06:30,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 503 transitions, 5885 flow [2022-07-13 22:06:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3592 transitions. [2022-07-13 22:06:30,550 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8491725768321513 [2022-07-13 22:06:30,550 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3592 transitions. [2022-07-13 22:06:30,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3592 transitions. [2022-07-13 22:06:30,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:30,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3592 transitions. [2022-07-13 22:06:30,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.55555555555554) internal successors, (3592), 18 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,554 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,554 INFO L186 Difference]: Start difference. First operand has 550 places, 442 transitions, 4444 flow. Second operand 18 states and 3592 transitions. [2022-07-13 22:06:30,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 503 transitions, 5885 flow [2022-07-13 22:06:30,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 503 transitions, 5493 flow, removed 196 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:30,837 INFO L242 Difference]: Finished difference. Result has 570 places, 451 transitions, 4694 flow [2022-07-13 22:06:30,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4694, PETRI_PLACES=570, PETRI_TRANSITIONS=451} [2022-07-13 22:06:30,837 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 356 predicate places. [2022-07-13 22:06:30,838 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 451 transitions, 4694 flow [2022-07-13 22:06:30,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,838 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:30,839 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:30,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 22:06:30,840 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:30,841 INFO L85 PathProgramCache]: Analyzing trace with hash -916504195, now seen corresponding path program 10 times [2022-07-13 22:06:30,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:30,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399430035] [2022-07-13 22:06:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:30,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:30,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:30,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399430035] [2022-07-13 22:06:30,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399430035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:30,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:30,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:30,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926612366] [2022-07-13 22:06:30,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:30,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:30,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:30,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:30,926 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:30,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 451 transitions, 4694 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:30,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:30,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:32,238 INFO L129 PetriNetUnfolder]: 957/4035 cut-off events. [2022-07-13 22:06:32,239 INFO L130 PetriNetUnfolder]: For 38816/38898 co-relation queries the response was YES. [2022-07-13 22:06:32,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19028 conditions, 4035 events. 957/4035 cut-off events. For 38816/38898 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 41005 event pairs, 273 based on Foata normal form. 18/3772 useless extension candidates. Maximal degree in co-relation 18816. Up to 1020 conditions per place. [2022-07-13 22:06:32,341 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 201 selfloop transitions, 116 changer transitions 16/514 dead transitions. [2022-07-13 22:06:32,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 514 transitions, 6167 flow [2022-07-13 22:06:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:06:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:06:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-13 22:06:32,344 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-13 22:06:32,344 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-13 22:06:32,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-13 22:06:32,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:32,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-13 22:06:32,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,349 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,349 INFO L186 Difference]: Start difference. First operand has 570 places, 451 transitions, 4694 flow. Second operand 17 states and 3397 transitions. [2022-07-13 22:06:32,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 514 transitions, 6167 flow [2022-07-13 22:06:32,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 514 transitions, 5981 flow, removed 46 selfloop flow, removed 6 redundant places. [2022-07-13 22:06:32,630 INFO L242 Difference]: Finished difference. Result has 586 places, 473 transitions, 5321 flow [2022-07-13 22:06:32,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5321, PETRI_PLACES=586, PETRI_TRANSITIONS=473} [2022-07-13 22:06:32,633 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 372 predicate places. [2022-07-13 22:06:32,633 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 473 transitions, 5321 flow [2022-07-13 22:06:32,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,633 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:32,633 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:32,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 22:06:32,634 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1806241857, now seen corresponding path program 11 times [2022-07-13 22:06:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:32,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585683639] [2022-07-13 22:06:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:32,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:32,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585683639] [2022-07-13 22:06:32,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585683639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:32,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:32,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:32,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269248176] [2022-07-13 22:06:32,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:32,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:32,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:32,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:32,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:32,708 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:32,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 473 transitions, 5321 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:32,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:32,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:34,042 INFO L129 PetriNetUnfolder]: 993/4295 cut-off events. [2022-07-13 22:06:34,042 INFO L130 PetriNetUnfolder]: For 44684/44995 co-relation queries the response was YES. [2022-07-13 22:06:34,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20648 conditions, 4295 events. 993/4295 cut-off events. For 44684/44995 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 44184 event pairs, 331 based on Foata normal form. 7/4009 useless extension candidates. Maximal degree in co-relation 20431. Up to 1076 conditions per place. [2022-07-13 22:06:34,118 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 224 selfloop transitions, 112 changer transitions 15/532 dead transitions. [2022-07-13 22:06:34,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 532 transitions, 6809 flow [2022-07-13 22:06:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:06:34,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:06:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-13 22:06:34,120 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-13 22:06:34,120 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-13 22:06:34,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-13 22:06:34,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:34,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-13 22:06:34,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:34,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:34,125 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:34,125 INFO L186 Difference]: Start difference. First operand has 586 places, 473 transitions, 5321 flow. Second operand 17 states and 3397 transitions. [2022-07-13 22:06:34,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 532 transitions, 6809 flow [2022-07-13 22:06:34,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 532 transitions, 6637 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:34,391 INFO L242 Difference]: Finished difference. Result has 606 places, 495 transitions, 5934 flow [2022-07-13 22:06:34,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5155, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5934, PETRI_PLACES=606, PETRI_TRANSITIONS=495} [2022-07-13 22:06:34,392 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 392 predicate places. [2022-07-13 22:06:34,392 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 495 transitions, 5934 flow [2022-07-13 22:06:34,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:34,392 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:34,392 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:34,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 22:06:34,393 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2040181781, now seen corresponding path program 12 times [2022-07-13 22:06:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:34,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244393375] [2022-07-13 22:06:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:34,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:34,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244393375] [2022-07-13 22:06:34,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244393375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:34,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:34,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314346428] [2022-07-13 22:06:34,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:34,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:34,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:34,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:34,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:34,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 495 transitions, 5934 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:34,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:34,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:34,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:35,754 INFO L129 PetriNetUnfolder]: 998/4356 cut-off events. [2022-07-13 22:06:35,754 INFO L130 PetriNetUnfolder]: For 47007/47322 co-relation queries the response was YES. [2022-07-13 22:06:35,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21315 conditions, 4356 events. 998/4356 cut-off events. For 47007/47322 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 45241 event pairs, 291 based on Foata normal form. 7/4067 useless extension candidates. Maximal degree in co-relation 21091. Up to 1098 conditions per place. [2022-07-13 22:06:35,852 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 209 selfloop transitions, 130 changer transitions 20/540 dead transitions. [2022-07-13 22:06:35,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 540 transitions, 7104 flow [2022-07-13 22:06:35,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3592 transitions. [2022-07-13 22:06:35,855 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8491725768321513 [2022-07-13 22:06:35,855 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3592 transitions. [2022-07-13 22:06:35,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3592 transitions. [2022-07-13 22:06:35,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:35,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3592 transitions. [2022-07-13 22:06:35,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.55555555555554) internal successors, (3592), 18 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,859 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,859 INFO L186 Difference]: Start difference. First operand has 606 places, 495 transitions, 5934 flow. Second operand 18 states and 3592 transitions. [2022-07-13 22:06:35,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 540 transitions, 7104 flow [2022-07-13 22:06:36,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 540 transitions, 6909 flow, removed 71 selfloop flow, removed 3 redundant places. [2022-07-13 22:06:36,273 INFO L242 Difference]: Finished difference. Result has 623 places, 505 transitions, 6257 flow [2022-07-13 22:06:36,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5747, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6257, PETRI_PLACES=623, PETRI_TRANSITIONS=505} [2022-07-13 22:06:36,274 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 409 predicate places. [2022-07-13 22:06:36,274 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 505 transitions, 6257 flow [2022-07-13 22:06:36,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:36,275 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:36,275 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:36,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 22:06:36,275 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1027717331, now seen corresponding path program 13 times [2022-07-13 22:06:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:36,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993000670] [2022-07-13 22:06:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:36,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:36,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:36,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993000670] [2022-07-13 22:06:36,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993000670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:36,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:36,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:36,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931601017] [2022-07-13 22:06:36,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:36,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:36,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:36,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:36,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:36,359 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:36,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 505 transitions, 6257 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:36,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:36,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:36,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:37,710 INFO L129 PetriNetUnfolder]: 995/4414 cut-off events. [2022-07-13 22:06:37,710 INFO L130 PetriNetUnfolder]: For 49836/50152 co-relation queries the response was YES. [2022-07-13 22:06:37,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21520 conditions, 4414 events. 995/4414 cut-off events. For 49836/50152 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 46156 event pairs, 336 based on Foata normal form. 7/4122 useless extension candidates. Maximal degree in co-relation 21293. Up to 1088 conditions per place. [2022-07-13 22:06:37,817 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 224 selfloop transitions, 119 changer transitions 24/548 dead transitions. [2022-07-13 22:06:37,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 548 transitions, 7402 flow [2022-07-13 22:06:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:37,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-13 22:06:37,819 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-13 22:06:37,819 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-13 22:06:37,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-13 22:06:37,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:37,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-13 22:06:37,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,824 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,824 INFO L186 Difference]: Start difference. First operand has 623 places, 505 transitions, 6257 flow. Second operand 18 states and 3596 transitions. [2022-07-13 22:06:37,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 548 transitions, 7402 flow [2022-07-13 22:06:38,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 548 transitions, 7252 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-07-13 22:06:38,163 INFO L242 Difference]: Finished difference. Result has 636 places, 512 transitions, 6569 flow [2022-07-13 22:06:38,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6113, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6569, PETRI_PLACES=636, PETRI_TRANSITIONS=512} [2022-07-13 22:06:38,163 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 422 predicate places. [2022-07-13 22:06:38,164 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 512 transitions, 6569 flow [2022-07-13 22:06:38,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:38,164 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:38,164 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:38,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 22:06:38,164 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:38,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash 228257503, now seen corresponding path program 14 times [2022-07-13 22:06:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:38,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688228138] [2022-07-13 22:06:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:38,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:38,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:38,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688228138] [2022-07-13 22:06:38,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688228138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:38,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:38,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903215579] [2022-07-13 22:06:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:38,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:38,244 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:38,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 512 transitions, 6569 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:38,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:38,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:38,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:39,967 INFO L129 PetriNetUnfolder]: 1052/4686 cut-off events. [2022-07-13 22:06:39,968 INFO L130 PetriNetUnfolder]: For 57868/57950 co-relation queries the response was YES. [2022-07-13 22:06:40,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23109 conditions, 4686 events. 1052/4686 cut-off events. For 57868/57950 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 49846 event pairs, 318 based on Foata normal form. 7/4380 useless extension candidates. Maximal degree in co-relation 22883. Up to 1086 conditions per place. [2022-07-13 22:06:40,081 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 221 selfloop transitions, 156 changer transitions 23/581 dead transitions. [2022-07-13 22:06:40,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 581 transitions, 8197 flow [2022-07-13 22:06:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:06:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:06:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4380 transitions. [2022-07-13 22:06:40,084 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8471953578336557 [2022-07-13 22:06:40,084 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4380 transitions. [2022-07-13 22:06:40,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4380 transitions. [2022-07-13 22:06:40,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:40,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4380 transitions. [2022-07-13 22:06:40,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.0909090909091) internal successors, (4380), 22 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:40,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:40,089 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:40,089 INFO L186 Difference]: Start difference. First operand has 636 places, 512 transitions, 6569 flow. Second operand 22 states and 4380 transitions. [2022-07-13 22:06:40,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 581 transitions, 8197 flow [2022-07-13 22:06:40,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 581 transitions, 8044 flow, removed 63 selfloop flow, removed 8 redundant places. [2022-07-13 22:06:40,391 INFO L242 Difference]: Finished difference. Result has 661 places, 540 transitions, 7339 flow [2022-07-13 22:06:40,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6418, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7339, PETRI_PLACES=661, PETRI_TRANSITIONS=540} [2022-07-13 22:06:40,391 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 447 predicate places. [2022-07-13 22:06:40,392 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 540 transitions, 7339 flow [2022-07-13 22:06:40,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:40,392 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:40,392 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:40,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-13 22:06:40,392 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:40,393 INFO L85 PathProgramCache]: Analyzing trace with hash -794204981, now seen corresponding path program 15 times [2022-07-13 22:06:40,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:40,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024435374] [2022-07-13 22:06:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:40,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:40,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:40,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024435374] [2022-07-13 22:06:40,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024435374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:40,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:40,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:40,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720252756] [2022-07-13 22:06:40,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:40,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:40,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:40,472 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:40,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 540 transitions, 7339 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:40,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:40,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:40,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:41,953 INFO L129 PetriNetUnfolder]: 1086/4825 cut-off events. [2022-07-13 22:06:41,953 INFO L130 PetriNetUnfolder]: For 65716/65790 co-relation queries the response was YES. [2022-07-13 22:06:42,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24853 conditions, 4825 events. 1086/4825 cut-off events. For 65716/65790 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 52488 event pairs, 293 based on Foata normal form. 7/4504 useless extension candidates. Maximal degree in co-relation 24620. Up to 1125 conditions per place. [2022-07-13 22:06:42,176 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 292 selfloop transitions, 110 changer transitions 21/604 dead transitions. [2022-07-13 22:06:42,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 604 transitions, 9128 flow [2022-07-13 22:06:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:06:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:06:42,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4185 transitions. [2022-07-13 22:06:42,179 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8480243161094225 [2022-07-13 22:06:42,179 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4185 transitions. [2022-07-13 22:06:42,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4185 transitions. [2022-07-13 22:06:42,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:42,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4185 transitions. [2022-07-13 22:06:42,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.28571428571428) internal successors, (4185), 21 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:42,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:42,184 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:42,184 INFO L186 Difference]: Start difference. First operand has 661 places, 540 transitions, 7339 flow. Second operand 21 states and 4185 transitions. [2022-07-13 22:06:42,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 604 transitions, 9128 flow [2022-07-13 22:06:42,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 604 transitions, 9042 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:42,541 INFO L242 Difference]: Finished difference. Result has 691 places, 566 transitions, 8214 flow [2022-07-13 22:06:42,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7255, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8214, PETRI_PLACES=691, PETRI_TRANSITIONS=566} [2022-07-13 22:06:42,542 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 477 predicate places. [2022-07-13 22:06:42,542 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 566 transitions, 8214 flow [2022-07-13 22:06:42,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:42,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:42,543 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 22:06:42,543 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1623238491, now seen corresponding path program 16 times [2022-07-13 22:06:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:42,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344061254] [2022-07-13 22:06:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:42,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:42,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344061254] [2022-07-13 22:06:42,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344061254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:42,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:42,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:42,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002692667] [2022-07-13 22:06:42,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:42,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:42,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:42,612 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:42,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 566 transitions, 8214 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:42,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:42,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:42,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:44,160 INFO L129 PetriNetUnfolder]: 1085/4897 cut-off events. [2022-07-13 22:06:44,160 INFO L130 PetriNetUnfolder]: For 71335/71409 co-relation queries the response was YES. [2022-07-13 22:06:44,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25770 conditions, 4897 events. 1085/4897 cut-off events. For 71335/71409 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 53567 event pairs, 291 based on Foata normal form. 7/4574 useless extension candidates. Maximal degree in co-relation 25524. Up to 1178 conditions per place. [2022-07-13 22:06:44,287 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 238 selfloop transitions, 166 changer transitions 23/608 dead transitions. [2022-07-13 22:06:44,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 608 transitions, 9534 flow [2022-07-13 22:06:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3590 transitions. [2022-07-13 22:06:44,289 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8486997635933806 [2022-07-13 22:06:44,289 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3590 transitions. [2022-07-13 22:06:44,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3590 transitions. [2022-07-13 22:06:44,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:44,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3590 transitions. [2022-07-13 22:06:44,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.44444444444446) internal successors, (3590), 18 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:44,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:44,293 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:44,293 INFO L186 Difference]: Start difference. First operand has 691 places, 566 transitions, 8214 flow. Second operand 18 states and 3590 transitions. [2022-07-13 22:06:44,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 608 transitions, 9534 flow [2022-07-13 22:06:44,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 608 transitions, 9326 flow, removed 104 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:44,729 INFO L242 Difference]: Finished difference. Result has 711 places, 575 transitions, 8599 flow [2022-07-13 22:06:44,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8008, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8599, PETRI_PLACES=711, PETRI_TRANSITIONS=575} [2022-07-13 22:06:44,729 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 497 predicate places. [2022-07-13 22:06:44,730 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 575 transitions, 8599 flow [2022-07-13 22:06:44,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:44,730 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:44,730 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 22:06:44,730 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:44,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash 603203705, now seen corresponding path program 17 times [2022-07-13 22:06:44,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:44,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638721624] [2022-07-13 22:06:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:44,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:44,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:44,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638721624] [2022-07-13 22:06:44,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638721624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:44,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:44,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30124982] [2022-07-13 22:06:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:44,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:44,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:44,804 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:44,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 575 transitions, 8599 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:44,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:44,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:44,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:46,480 INFO L129 PetriNetUnfolder]: 1140/5189 cut-off events. [2022-07-13 22:06:46,480 INFO L130 PetriNetUnfolder]: For 80030/80104 co-relation queries the response was YES. [2022-07-13 22:06:46,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27921 conditions, 5189 events. 1140/5189 cut-off events. For 80030/80104 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 57300 event pairs, 366 based on Foata normal form. 7/4843 useless extension candidates. Maximal degree in co-relation 27669. Up to 1221 conditions per place. [2022-07-13 22:06:46,621 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 296 selfloop transitions, 135 changer transitions 16/628 dead transitions. [2022-07-13 22:06:46,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 628 transitions, 10280 flow [2022-07-13 22:06:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:06:46,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:06:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3395 transitions. [2022-07-13 22:06:46,623 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8498122653316645 [2022-07-13 22:06:46,623 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3395 transitions. [2022-07-13 22:06:46,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3395 transitions. [2022-07-13 22:06:46,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:46,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3395 transitions. [2022-07-13 22:06:46,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.7058823529412) internal successors, (3395), 17 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:46,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:46,627 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:46,627 INFO L186 Difference]: Start difference. First operand has 711 places, 575 transitions, 8599 flow. Second operand 17 states and 3395 transitions. [2022-07-13 22:06:46,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 628 transitions, 10280 flow [2022-07-13 22:06:47,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 719 places, 628 transitions, 10024 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-07-13 22:06:47,110 INFO L242 Difference]: Finished difference. Result has 727 places, 597 transitions, 9246 flow [2022-07-13 22:06:47,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8357, PETRI_DIFFERENCE_MINUEND_PLACES=703, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9246, PETRI_PLACES=727, PETRI_TRANSITIONS=597} [2022-07-13 22:06:47,111 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 513 predicate places. [2022-07-13 22:06:47,112 INFO L495 AbstractCegarLoop]: Abstraction has has 727 places, 597 transitions, 9246 flow [2022-07-13 22:06:47,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:47,112 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:47,112 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:47,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 22:06:47,112 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:47,113 INFO L85 PathProgramCache]: Analyzing trace with hash -779172371, now seen corresponding path program 18 times [2022-07-13 22:06:47,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:47,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061377689] [2022-07-13 22:06:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:47,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:47,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:47,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061377689] [2022-07-13 22:06:47,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061377689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:47,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:47,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:47,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036171412] [2022-07-13 22:06:47,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:47,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:47,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:47,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:47,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:47,182 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:47,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 597 transitions, 9246 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:47,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:47,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:47,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:48,937 INFO L129 PetriNetUnfolder]: 1177/5341 cut-off events. [2022-07-13 22:06:48,938 INFO L130 PetriNetUnfolder]: For 85815/85889 co-relation queries the response was YES. [2022-07-13 22:06:49,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29681 conditions, 5341 events. 1177/5341 cut-off events. For 85815/85889 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 59949 event pairs, 308 based on Foata normal form. 7/4983 useless extension candidates. Maximal degree in co-relation 29424. Up to 1270 conditions per place. [2022-07-13 22:06:49,085 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 322 selfloop transitions, 130 changer transitions 17/650 dead transitions. [2022-07-13 22:06:49,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 650 transitions, 10983 flow [2022-07-13 22:06:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:06:49,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:06:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3399 transitions. [2022-07-13 22:06:49,087 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8508135168961202 [2022-07-13 22:06:49,087 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3399 transitions. [2022-07-13 22:06:49,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3399 transitions. [2022-07-13 22:06:49,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:49,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3399 transitions. [2022-07-13 22:06:49,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.94117647058823) internal successors, (3399), 17 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:49,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:49,091 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:49,091 INFO L186 Difference]: Start difference. First operand has 727 places, 597 transitions, 9246 flow. Second operand 17 states and 3399 transitions. [2022-07-13 22:06:49,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 650 transitions, 10983 flow [2022-07-13 22:06:49,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 650 transitions, 10797 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:49,567 INFO L242 Difference]: Finished difference. Result has 747 places, 619 transitions, 9954 flow [2022-07-13 22:06:49,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9066, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9954, PETRI_PLACES=747, PETRI_TRANSITIONS=619} [2022-07-13 22:06:49,568 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 533 predicate places. [2022-07-13 22:06:49,568 INFO L495 AbstractCegarLoop]: Abstraction has has 747 places, 619 transitions, 9954 flow [2022-07-13 22:06:49,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:49,568 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:49,569 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:49,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 22:06:49,569 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:49,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash 422183497, now seen corresponding path program 19 times [2022-07-13 22:06:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:49,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380900250] [2022-07-13 22:06:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:49,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:49,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380900250] [2022-07-13 22:06:49,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380900250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:49,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:49,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228906767] [2022-07-13 22:06:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:49,662 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:49,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 619 transitions, 9954 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:49,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:49,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:49,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:51,810 INFO L129 PetriNetUnfolder]: 1182/5406 cut-off events. [2022-07-13 22:06:51,811 INFO L130 PetriNetUnfolder]: For 90632/90706 co-relation queries the response was YES. [2022-07-13 22:06:51,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30419 conditions, 5406 events. 1182/5406 cut-off events. For 90632/90706 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 60890 event pairs, 311 based on Foata normal form. 7/5044 useless extension candidates. Maximal degree in co-relation 30155. Up to 1277 conditions per place. [2022-07-13 22:06:51,969 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 319 selfloop transitions, 135 changer transitions 21/656 dead transitions. [2022-07-13 22:06:51,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 762 places, 656 transitions, 11358 flow [2022-07-13 22:06:51,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3594 transitions. [2022-07-13 22:06:51,971 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.849645390070922 [2022-07-13 22:06:51,971 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3594 transitions. [2022-07-13 22:06:51,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3594 transitions. [2022-07-13 22:06:51,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:51,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3594 transitions. [2022-07-13 22:06:51,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.66666666666666) internal successors, (3594), 18 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:51,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:51,976 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:51,976 INFO L186 Difference]: Start difference. First operand has 747 places, 619 transitions, 9954 flow. Second operand 18 states and 3594 transitions. [2022-07-13 22:06:51,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 762 places, 656 transitions, 11358 flow [2022-07-13 22:06:52,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 656 transitions, 11084 flow, removed 101 selfloop flow, removed 3 redundant places. [2022-07-13 22:06:52,564 INFO L242 Difference]: Finished difference. Result has 763 places, 628 transitions, 10264 flow [2022-07-13 22:06:52,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9714, PETRI_DIFFERENCE_MINUEND_PLACES=742, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10264, PETRI_PLACES=763, PETRI_TRANSITIONS=628} [2022-07-13 22:06:52,564 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 549 predicate places. [2022-07-13 22:06:52,564 INFO L495 AbstractCegarLoop]: Abstraction has has 763 places, 628 transitions, 10264 flow [2022-07-13 22:06:52,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:52,565 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:52,565 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:52,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-13 22:06:52,565 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:52,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:52,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1910873827, now seen corresponding path program 20 times [2022-07-13 22:06:52,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:52,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031719132] [2022-07-13 22:06:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:52,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:52,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:52,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031719132] [2022-07-13 22:06:52,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031719132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:52,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:52,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:52,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026285548] [2022-07-13 22:06:52,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:52,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:52,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:52,634 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-13 22:06:52,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 628 transitions, 10264 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:52,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:52,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-13 22:06:52,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:54,588 INFO L129 PetriNetUnfolder]: 1182/5420 cut-off events. [2022-07-13 22:06:54,588 INFO L130 PetriNetUnfolder]: For 95121/95195 co-relation queries the response was YES. [2022-07-13 22:06:54,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30319 conditions, 5420 events. 1182/5420 cut-off events. For 95121/95195 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 60616 event pairs, 364 based on Foata normal form. 7/5058 useless extension candidates. Maximal degree in co-relation 30053. Up to 1287 conditions per place. [2022-07-13 22:06:54,737 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 302 selfloop transitions, 152 changer transitions 27/662 dead transitions. [2022-07-13 22:06:54,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 778 places, 662 transitions, 11524 flow [2022-07-13 22:06:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3594 transitions. [2022-07-13 22:06:54,740 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.849645390070922 [2022-07-13 22:06:54,740 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3594 transitions. [2022-07-13 22:06:54,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3594 transitions. [2022-07-13 22:06:54,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:54,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3594 transitions. [2022-07-13 22:06:54,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.66666666666666) internal successors, (3594), 18 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:54,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:54,745 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:54,745 INFO L186 Difference]: Start difference. First operand has 763 places, 628 transitions, 10264 flow. Second operand 18 states and 3594 transitions. [2022-07-13 22:06:54,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 778 places, 662 transitions, 11524 flow [2022-07-13 22:06:55,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 662 transitions, 11329 flow, removed 68 selfloop flow, removed 16 redundant places. [2022-07-13 22:06:55,315 INFO L242 Difference]: Finished difference. Result has 766 places, 634 transitions, 10555 flow [2022-07-13 22:06:55,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10071, PETRI_DIFFERENCE_MINUEND_PLACES=745, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10555, PETRI_PLACES=766, PETRI_TRANSITIONS=634} [2022-07-13 22:06:55,316 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 552 predicate places. [2022-07-13 22:06:55,316 INFO L495 AbstractCegarLoop]: Abstraction has has 766 places, 634 transitions, 10555 flow [2022-07-13 22:06:55,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:55,316 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:55,316 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:55,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-13 22:06:55,316 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:55,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1805731521, now seen corresponding path program 1 times [2022-07-13 22:06:55,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:55,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79511158] [2022-07-13 22:06:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:55,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:56,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:56,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79511158] [2022-07-13 22:06:56,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79511158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:56,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:56,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-07-13 22:06:56,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248906736] [2022-07-13 22:06:56,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:56,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 22:06:56,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 22:06:56,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=867, Unknown=0, NotChecked=0, Total=930 [2022-07-13 22:06:56,023 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 235 [2022-07-13 22:06:56,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 634 transitions, 10555 flow. Second operand has 31 states, 31 states have (on average 149.29032258064515) internal successors, (4628), 31 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:56,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:56,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 235 [2022-07-13 22:06:56,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand