./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 35987657 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-?-3598765 [2022-07-21 08:59:57,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:59:57,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:59:57,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:59:57,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:59:57,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:59:57,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:59:57,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:59:57,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:59:57,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:59:57,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:59:57,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:59:57,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:59:57,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:59:57,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:59:57,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:59:57,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:59:57,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:59:57,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:59:57,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:59:57,474 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:59:57,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:59:57,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:59:57,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:59:57,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:59:57,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:59:57,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:59:57,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:59:57,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:59:57,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:59:57,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:59:57,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:59:57,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:59:57,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:59:57,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:59:57,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:59:57,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:59:57,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:59:57,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:59:57,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:59:57,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:59:57,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:59:57,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:59:57,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:59:57,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:59:57,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:59:57,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:59:57,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:59:57,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:59:57,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:59:57,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:59:57,529 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:59:57,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:59:57,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:59:57,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:59:57,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:59:57,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:59:57,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:59:57,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:59:57,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:59:57,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:59:57,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:59:57,531 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:59:57,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:59:57,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:59:57,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:59:57,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:59:57,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:57,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:59:57,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:59:57,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:59:57,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:59:57,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:59:57,534 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:59:57,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:59:57,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:59:57,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-07-21 08:59:57,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:59:57,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:59:57,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:59:57,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:59:57,813 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:59:57,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-21 08:59:57,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac667d021/065bc4f281cd4e8f87a26493485602ca/FLAG471e8d0c8 [2022-07-21 08:59:58,231 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:59:58,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-21 08:59:58,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac667d021/065bc4f281cd4e8f87a26493485602ca/FLAG471e8d0c8 [2022-07-21 08:59:58,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac667d021/065bc4f281cd4e8f87a26493485602ca [2022-07-21 08:59:58,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:59:58,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:59:58,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:58,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:59:58,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:59:58,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee40159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58, skipping insertion in model container [2022-07-21 08:59:58,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:59:58,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:59:58,448 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] [2022-07-21 08:59:58,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:58,462 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:59:58,531 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] [2022-07-21 08:59:58,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:58,544 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:59:58,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58 WrapperNode [2022-07-21 08:59:58,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:58,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:58,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:59:58,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:59:58,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,589 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 179 [2022-07-21 08:59:58,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:58,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:59:58,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:59:58,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:59:58,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:59:58,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:59:58,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:59:58,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:59:58,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:58,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:58,647 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) [2022-07-21 08:59:58,659 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 [2022-07-21 08:59:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:59:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:59:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:59:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:59:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:59:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 08:59:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 08:59:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:59:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:59:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:59:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:59:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:59:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:59:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:59:58,692 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:59:58,757 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:59:58,758 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:59:59,023 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:59:59,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:59:59,031 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:59:59,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:59 BoogieIcfgContainer [2022-07-21 08:59:59,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:59:59,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:59:59,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:59:59,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:59:59,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:59:58" (1/3) ... [2022-07-21 08:59:59,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c94c49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:59, skipping insertion in model container [2022-07-21 08:59:59,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58" (2/3) ... [2022-07-21 08:59:59,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c94c49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:59, skipping insertion in model container [2022-07-21 08:59:59,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:59" (3/3) ... [2022-07-21 08:59:59,038 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-07-21 08:59:59,041 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:59:59,048 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:59:59,048 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:59:59,048 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:59:59,108 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 08:59:59,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 494 flow [2022-07-21 08:59:59,222 INFO L129 PetriNetUnfolder]: 17/232 cut-off events. [2022-07-21 08:59:59,222 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:59:59,228 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. [2022-07-21 08:59:59,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 235 transitions, 494 flow [2022-07-21 08:59:59,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 221 transitions, 460 flow [2022-07-21 08:59:59,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:59:59,247 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@336582a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7cd96de1 [2022-07-21 08:59:59,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:59:59,294 INFO L129 PetriNetUnfolder]: 17/220 cut-off events. [2022-07-21 08:59:59,294 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:59:59,295 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:59,295 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] [2022-07-21 08:59:59,296 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)] === [2022-07-21 08:59:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:59,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1711885606, now seen corresponding path program 1 times [2022-07-21 08:59:59,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:59,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902141873] [2022-07-21 08:59:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:59,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:59,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:59,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902141873] [2022-07-21 08:59:59,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902141873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:59,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:59,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:59,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023355522] [2022-07-21 08:59:59,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:59,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:59,662 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-21 08:59:59,665 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) [2022-07-21 08:59:59,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:59,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-21 08:59:59,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:59,833 INFO L129 PetriNetUnfolder]: 84/1006 cut-off events. [2022-07-21 08:59:59,834 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-07-21 08:59:59,839 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. [2022-07-21 08:59:59,843 INFO L132 encePairwiseOnDemand]: 219/235 looper letters, 20 selfloop transitions, 4 changer transitions 2/221 dead transitions. [2022-07-21 08:59:59,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 221 transitions, 520 flow [2022-07-21 08:59:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-07-21 08:59:59,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.950354609929078 [2022-07-21 08:59:59,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-07-21 08:59:59,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-07-21 08:59:59,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:59,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-07-21 08:59:59,877 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) [2022-07-21 08:59:59,883 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) [2022-07-21 08:59:59,892 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) [2022-07-21 08:59:59,893 INFO L186 Difference]: Start difference. First operand has 214 places, 221 transitions, 460 flow. Second operand 3 states and 670 transitions. [2022-07-21 08:59:59,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 221 transitions, 520 flow [2022-07-21 08:59:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 221 transitions, 500 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 08:59:59,901 INFO L242 Difference]: Finished difference. Result has 212 places, 215 transitions, 468 flow [2022-07-21 08:59:59,904 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} [2022-07-21 08:59:59,907 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-07-21 08:59:59,908 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 468 flow [2022-07-21 08:59:59,909 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) [2022-07-21 08:59:59,909 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:59,909 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] [2022-07-21 08:59:59,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:59:59,909 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)] === [2022-07-21 08:59:59,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1537026462, now seen corresponding path program 1 times [2022-07-21 08:59:59,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:59,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390101914] [2022-07-21 08:59:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:59,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:59,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390101914] [2022-07-21 08:59:59,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390101914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:59,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:59,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:59,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366123609] [2022-07-21 08:59:59,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:59,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:59,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:59,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:59,986 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-21 08:59:59,987 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) [2022-07-21 08:59:59,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:59,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-21 08:59:59,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:00,203 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))]) [2022-07-21 09:00:00,203 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-21 09:00:00,204 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-21 09:00:00,204 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-21 09:00:00,204 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-21 09:00:00,204 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-21 09:00:00,205 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-21 09:00:00,205 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-21 09:00:00,205 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-21 09:00:00,205 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-21 09:00:00,205 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-07-21 09:00:00,227 INFO L382 tUnfolder$Statistics]: inserting event number 6 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-21 09:00:00,227 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is not cut-off event [2022-07-21 09:00:00,227 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-21 09:00:00,228 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-21 09:00:00,228 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-21 09:00:00,228 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-21 09:00:00,228 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-21 09:00:00,235 INFO L129 PetriNetUnfolder]: 96/2144 cut-off events. [2022-07-21 09:00:00,236 INFO L130 PetriNetUnfolder]: For 85/89 co-relation queries the response was YES. [2022-07-21 09:00:00,243 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. [2022-07-21 09:00:00,248 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 19 selfloop transitions, 3 changer transitions 0/223 dead transitions. [2022-07-21 09:00:00,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 223 transitions, 533 flow [2022-07-21 09:00:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-21 09:00:00,251 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-21 09:00:00,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-21 09:00:00,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-21 09:00:00,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:00,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-21 09:00:00,253 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) [2022-07-21 09:00:00,256 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) [2022-07-21 09:00:00,256 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) [2022-07-21 09:00:00,256 INFO L186 Difference]: Start difference. First operand has 212 places, 215 transitions, 468 flow. Second operand 3 states and 661 transitions. [2022-07-21 09:00:00,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 223 transitions, 533 flow [2022-07-21 09:00:00,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 223 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:00,266 INFO L242 Difference]: Finished difference. Result has 213 places, 218 transitions, 494 flow [2022-07-21 09:00:00,267 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} [2022-07-21 09:00:00,268 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -1 predicate places. [2022-07-21 09:00:00,268 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 218 transitions, 494 flow [2022-07-21 09:00:00,268 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) [2022-07-21 09:00:00,268 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:00,269 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] [2022-07-21 09:00:00,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:00:00,269 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)] === [2022-07-21 09:00:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:00,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1414919130, now seen corresponding path program 2 times [2022-07-21 09:00:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:00,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581699244] [2022-07-21 09:00:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:00,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:00,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:00,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581699244] [2022-07-21 09:00:00,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581699244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:00,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:00,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492719776] [2022-07-21 09:00:00,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:00,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:00,349 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-21 09:00:00,350 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) [2022-07-21 09:00:00,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:00,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-21 09:00:00,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:00,579 INFO L129 PetriNetUnfolder]: 80/1827 cut-off events. [2022-07-21 09:00:00,579 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-07-21 09:00:00,587 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. [2022-07-21 09:00:00,592 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 20 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2022-07-21 09:00:00,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 226 transitions, 571 flow [2022-07-21 09:00:00,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-21 09:00:00,594 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-21 09:00:00,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-21 09:00:00,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-21 09:00:00,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:00,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-21 09:00:00,596 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) [2022-07-21 09:00:00,597 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) [2022-07-21 09:00:00,598 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) [2022-07-21 09:00:00,598 INFO L186 Difference]: Start difference. First operand has 213 places, 218 transitions, 494 flow. Second operand 3 states and 661 transitions. [2022-07-21 09:00:00,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 226 transitions, 571 flow [2022-07-21 09:00:00,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 226 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:00,602 INFO L242 Difference]: Finished difference. Result has 216 places, 221 transitions, 535 flow [2022-07-21 09:00:00,602 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} [2022-07-21 09:00:00,604 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 2 predicate places. [2022-07-21 09:00:00,604 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 221 transitions, 535 flow [2022-07-21 09:00:00,605 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) [2022-07-21 09:00:00,605 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:00,605 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] [2022-07-21 09:00:00,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:00:00,606 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)] === [2022-07-21 09:00:00,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:00,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1873849952, now seen corresponding path program 1 times [2022-07-21 09:00:00,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:00,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942424820] [2022-07-21 09:00:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:00,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:00,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:00,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942424820] [2022-07-21 09:00:00,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942424820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:00,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:00,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:00,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039450841] [2022-07-21 09:00:00,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:00,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:00,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:00,689 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-21 09:00:00,692 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) [2022-07-21 09:00:00,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:00,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-21 09:00:00,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:01,107 INFO L129 PetriNetUnfolder]: 96/3140 cut-off events. [2022-07-21 09:00:01,108 INFO L130 PetriNetUnfolder]: For 98/131 co-relation queries the response was YES. [2022-07-21 09:00:01,118 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. [2022-07-21 09:00:01,125 INFO L132 encePairwiseOnDemand]: 231/235 looper letters, 17 selfloop transitions, 2 changer transitions 0/228 dead transitions. [2022-07-21 09:00:01,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 228 transitions, 592 flow [2022-07-21 09:00:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-21 09:00:01,130 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-21 09:00:01,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-21 09:00:01,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-21 09:00:01,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:01,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-21 09:00:01,132 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) [2022-07-21 09:00:01,133 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) [2022-07-21 09:00:01,134 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) [2022-07-21 09:00:01,134 INFO L186 Difference]: Start difference. First operand has 216 places, 221 transitions, 535 flow. Second operand 3 states and 663 transitions. [2022-07-21 09:00:01,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 228 transitions, 592 flow [2022-07-21 09:00:01,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 228 transitions, 576 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:01,139 INFO L242 Difference]: Finished difference. Result has 218 places, 223 transitions, 539 flow [2022-07-21 09:00:01,140 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} [2022-07-21 09:00:01,141 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2022-07-21 09:00:01,141 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 223 transitions, 539 flow [2022-07-21 09:00:01,141 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) [2022-07-21 09:00:01,142 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:01,142 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] [2022-07-21 09:00:01,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:00:01,142 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)] === [2022-07-21 09:00:01,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:01,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1926563626, now seen corresponding path program 1 times [2022-07-21 09:00:01,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:01,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340117916] [2022-07-21 09:00:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:01,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:01,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:01,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340117916] [2022-07-21 09:00:01,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340117916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:01,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:01,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:01,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420846840] [2022-07-21 09:00:01,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:01,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:01,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:01,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:01,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-21 09:00:01,201 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) [2022-07-21 09:00:01,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:01,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-21 09:00:01,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:01,425 INFO L129 PetriNetUnfolder]: 130/2353 cut-off events. [2022-07-21 09:00:01,426 INFO L130 PetriNetUnfolder]: For 139/233 co-relation queries the response was YES. [2022-07-21 09:00:01,435 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. [2022-07-21 09:00:01,440 INFO L132 encePairwiseOnDemand]: 225/235 looper letters, 22 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2022-07-21 09:00:01,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 231 transitions, 623 flow [2022-07-21 09:00:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:01,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:01,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-07-21 09:00:01,442 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-07-21 09:00:01,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-07-21 09:00:01,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-07-21 09:00:01,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:01,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-07-21 09:00:01,444 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) [2022-07-21 09:00:01,445 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) [2022-07-21 09:00:01,446 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) [2022-07-21 09:00:01,446 INFO L186 Difference]: Start difference. First operand has 218 places, 223 transitions, 539 flow. Second operand 3 states and 658 transitions. [2022-07-21 09:00:01,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 231 transitions, 623 flow [2022-07-21 09:00:01,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:01,451 INFO L242 Difference]: Finished difference. Result has 221 places, 227 transitions, 593 flow [2022-07-21 09:00:01,451 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} [2022-07-21 09:00:01,453 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 7 predicate places. [2022-07-21 09:00:01,453 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 227 transitions, 593 flow [2022-07-21 09:00:01,454 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) [2022-07-21 09:00:01,454 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:01,454 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] [2022-07-21 09:00:01,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:00:01,454 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)] === [2022-07-21 09:00:01,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:01,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1437708392, now seen corresponding path program 1 times [2022-07-21 09:00:01,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:01,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863184838] [2022-07-21 09:00:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:01,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:01,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:01,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863184838] [2022-07-21 09:00:01,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863184838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:01,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:01,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:00:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866837228] [2022-07-21 09:00:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:00:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:00:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:00:01,582 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-21 09:00:01,584 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) [2022-07-21 09:00:01,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:01,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-21 09:00:01,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:01,863 INFO L129 PetriNetUnfolder]: 114/2103 cut-off events. [2022-07-21 09:00:01,864 INFO L130 PetriNetUnfolder]: For 155/421 co-relation queries the response was YES. [2022-07-21 09:00:01,876 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. [2022-07-21 09:00:01,882 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 21 selfloop transitions, 0 changer transitions 22/247 dead transitions. [2022-07-21 09:00:01,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 247 transitions, 730 flow [2022-07-21 09:00:01,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:00:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:00:01,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-21 09:00:01,886 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-21 09:00:01,886 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-21 09:00:01,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-21 09:00:01,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:01,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-21 09:00:01,890 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) [2022-07-21 09:00:01,893 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) [2022-07-21 09:00:01,894 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) [2022-07-21 09:00:01,894 INFO L186 Difference]: Start difference. First operand has 221 places, 227 transitions, 593 flow. Second operand 9 states and 1861 transitions. [2022-07-21 09:00:01,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 247 transitions, 730 flow [2022-07-21 09:00:01,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 247 transitions, 710 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:01,901 INFO L242 Difference]: Finished difference. Result has 234 places, 225 transitions, 579 flow [2022-07-21 09:00:01,902 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} [2022-07-21 09:00:01,903 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-07-21 09:00:01,904 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 225 transitions, 579 flow [2022-07-21 09:00:01,904 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) [2022-07-21 09:00:01,904 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:01,905 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] [2022-07-21 09:00:01,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:00:01,905 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)] === [2022-07-21 09:00:01,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:01,906 INFO L85 PathProgramCache]: Analyzing trace with hash 169299696, now seen corresponding path program 1 times [2022-07-21 09:00:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:01,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752713511] [2022-07-21 09:00:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:01,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:01,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:01,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752713511] [2022-07-21 09:00:01,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752713511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:01,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:01,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663098113] [2022-07-21 09:00:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:01,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:01,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:01,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-21 09:00:01,943 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) [2022-07-21 09:00:01,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:01,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-21 09:00:01,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:02,087 INFO L129 PetriNetUnfolder]: 46/1393 cut-off events. [2022-07-21 09:00:02,087 INFO L130 PetriNetUnfolder]: For 47/57 co-relation queries the response was YES. [2022-07-21 09:00:02,091 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. [2022-07-21 09:00:02,094 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 17 selfloop transitions, 4 changer transitions 1/232 dead transitions. [2022-07-21 09:00:02,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 232 transitions, 644 flow [2022-07-21 09:00:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-21 09:00:02,096 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-21 09:00:02,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-21 09:00:02,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-21 09:00:02,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:02,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-21 09:00:02,098 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) [2022-07-21 09:00:02,099 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) [2022-07-21 09:00:02,099 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) [2022-07-21 09:00:02,099 INFO L186 Difference]: Start difference. First operand has 234 places, 225 transitions, 579 flow. Second operand 3 states and 663 transitions. [2022-07-21 09:00:02,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 232 transitions, 644 flow [2022-07-21 09:00:02,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 232 transitions, 630 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-07-21 09:00:02,103 INFO L242 Difference]: Finished difference. Result has 224 places, 226 transitions, 593 flow [2022-07-21 09:00:02,104 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} [2022-07-21 09:00:02,104 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 10 predicate places. [2022-07-21 09:00:02,104 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 226 transitions, 593 flow [2022-07-21 09:00:02,105 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) [2022-07-21 09:00:02,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:02,105 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] [2022-07-21 09:00:02,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:00:02,105 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)] === [2022-07-21 09:00:02,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:02,106 INFO L85 PathProgramCache]: Analyzing trace with hash -68732316, now seen corresponding path program 1 times [2022-07-21 09:00:02,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:02,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218645803] [2022-07-21 09:00:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:02,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:02,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:02,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218645803] [2022-07-21 09:00:02,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218645803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:02,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:02,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:02,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534194492] [2022-07-21 09:00:02,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:02,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:02,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:02,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:02,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:02,220 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:02,222 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) [2022-07-21 09:00:02,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:02,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:02,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:02,742 INFO L129 PetriNetUnfolder]: 913/3930 cut-off events. [2022-07-21 09:00:02,742 INFO L130 PetriNetUnfolder]: For 297/395 co-relation queries the response was YES. [2022-07-21 09:00:02,760 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. [2022-07-21 09:00:02,773 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 76 selfloop transitions, 30 changer transitions 28/330 dead transitions. [2022-07-21 09:00:02,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 330 transitions, 1102 flow [2022-07-21 09:00:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2022-07-21 09:00:02,781 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494680851063829 [2022-07-21 09:00:02,782 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2022-07-21 09:00:02,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2022-07-21 09:00:02,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:02,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2022-07-21 09:00:02,791 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) [2022-07-21 09:00:02,798 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) [2022-07-21 09:00:02,799 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) [2022-07-21 09:00:02,800 INFO L186 Difference]: Start difference. First operand has 224 places, 226 transitions, 593 flow. Second operand 24 states and 4791 transitions. [2022-07-21 09:00:02,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 330 transitions, 1102 flow [2022-07-21 09:00:02,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 330 transitions, 1090 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:02,805 INFO L242 Difference]: Finished difference. Result has 264 places, 255 transitions, 797 flow [2022-07-21 09:00:02,805 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} [2022-07-21 09:00:02,806 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 50 predicate places. [2022-07-21 09:00:02,806 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 255 transitions, 797 flow [2022-07-21 09:00:02,807 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) [2022-07-21 09:00:02,807 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:02,807 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] [2022-07-21 09:00:02,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:00:02,808 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)] === [2022-07-21 09:00:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1664128876, now seen corresponding path program 2 times [2022-07-21 09:00:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:02,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227735725] [2022-07-21 09:00:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:02,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:02,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:02,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227735725] [2022-07-21 09:00:02,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227735725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:02,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:02,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:02,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298578690] [2022-07-21 09:00:02,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:02,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:02,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:02,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:02,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:02,899 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:02,901 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) [2022-07-21 09:00:02,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:02,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:02,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:03,462 INFO L129 PetriNetUnfolder]: 1027/3970 cut-off events. [2022-07-21 09:00:03,462 INFO L130 PetriNetUnfolder]: For 3975/4061 co-relation queries the response was YES. [2022-07-21 09:00:03,486 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. [2022-07-21 09:00:03,499 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 68 selfloop transitions, 45 changer transitions 19/328 dead transitions. [2022-07-21 09:00:03,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 328 transitions, 1448 flow [2022-07-21 09:00:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3988 transitions. [2022-07-21 09:00:03,506 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8485106382978723 [2022-07-21 09:00:03,506 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3988 transitions. [2022-07-21 09:00:03,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3988 transitions. [2022-07-21 09:00:03,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:03,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3988 transitions. [2022-07-21 09:00:03,513 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) [2022-07-21 09:00:03,518 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) [2022-07-21 09:00:03,519 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) [2022-07-21 09:00:03,519 INFO L186 Difference]: Start difference. First operand has 264 places, 255 transitions, 797 flow. Second operand 20 states and 3988 transitions. [2022-07-21 09:00:03,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 328 transitions, 1448 flow [2022-07-21 09:00:03,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 328 transitions, 1442 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:03,548 INFO L242 Difference]: Finished difference. Result has 294 places, 287 transitions, 1215 flow [2022-07-21 09:00:03,548 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} [2022-07-21 09:00:03,549 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 80 predicate places. [2022-07-21 09:00:03,549 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 287 transitions, 1215 flow [2022-07-21 09:00:03,550 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) [2022-07-21 09:00:03,550 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:03,550 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] [2022-07-21 09:00:03,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 09:00:03,550 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)] === [2022-07-21 09:00:03,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash -112561332, now seen corresponding path program 3 times [2022-07-21 09:00:03,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:03,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700739114] [2022-07-21 09:00:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:03,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:03,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:03,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700739114] [2022-07-21 09:00:03,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700739114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:03,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:03,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:03,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144634778] [2022-07-21 09:00:03,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:03,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:03,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:03,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:03,633 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:03,635 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) [2022-07-21 09:00:03,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:03,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:03,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:04,282 INFO L129 PetriNetUnfolder]: 1070/4236 cut-off events. [2022-07-21 09:00:04,283 INFO L130 PetriNetUnfolder]: For 8483/8578 co-relation queries the response was YES. [2022-07-21 09:00:04,316 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. [2022-07-21 09:00:04,332 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 110 selfloop transitions, 42 changer transitions 22/370 dead transitions. [2022-07-21 09:00:04,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 370 transitions, 2169 flow [2022-07-21 09:00:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3992 transitions. [2022-07-21 09:00:04,338 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8493617021276596 [2022-07-21 09:00:04,339 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3992 transitions. [2022-07-21 09:00:04,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3992 transitions. [2022-07-21 09:00:04,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:04,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3992 transitions. [2022-07-21 09:00:04,345 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) [2022-07-21 09:00:04,350 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) [2022-07-21 09:00:04,351 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) [2022-07-21 09:00:04,352 INFO L186 Difference]: Start difference. First operand has 294 places, 287 transitions, 1215 flow. Second operand 20 states and 3992 transitions. [2022-07-21 09:00:04,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 370 transitions, 2169 flow [2022-07-21 09:00:04,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 370 transitions, 1921 flow, removed 124 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:04,432 INFO L242 Difference]: Finished difference. Result has 324 places, 319 transitions, 1549 flow [2022-07-21 09:00:04,433 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} [2022-07-21 09:00:04,433 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 110 predicate places. [2022-07-21 09:00:04,433 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 319 transitions, 1549 flow [2022-07-21 09:00:04,434 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) [2022-07-21 09:00:04,434 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:04,434 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] [2022-07-21 09:00:04,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:00:04,434 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)] === [2022-07-21 09:00:04,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:04,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1317235276, now seen corresponding path program 4 times [2022-07-21 09:00:04,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:04,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016458584] [2022-07-21 09:00:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:04,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:04,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:04,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016458584] [2022-07-21 09:00:04,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016458584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:04,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:04,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:04,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182196955] [2022-07-21 09:00:04,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:04,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:04,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:04,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:04,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:04,561 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:04,562 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) [2022-07-21 09:00:04,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:04,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:04,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:05,373 INFO L129 PetriNetUnfolder]: 1115/4455 cut-off events. [2022-07-21 09:00:05,373 INFO L130 PetriNetUnfolder]: For 10480/10587 co-relation queries the response was YES. [2022-07-21 09:00:05,417 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. [2022-07-21 09:00:05,435 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 141 selfloop transitions, 76 changer transitions 26/439 dead transitions. [2022-07-21 09:00:05,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 439 transitions, 2943 flow [2022-07-21 09:00:05,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4788 transitions. [2022-07-21 09:00:05,443 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2022-07-21 09:00:05,443 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4788 transitions. [2022-07-21 09:00:05,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4788 transitions. [2022-07-21 09:00:05,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:05,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4788 transitions. [2022-07-21 09:00:05,452 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) [2022-07-21 09:00:05,460 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) [2022-07-21 09:00:05,461 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) [2022-07-21 09:00:05,461 INFO L186 Difference]: Start difference. First operand has 324 places, 319 transitions, 1549 flow. Second operand 24 states and 4788 transitions. [2022-07-21 09:00:05,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 439 transitions, 2943 flow [2022-07-21 09:00:05,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 439 transitions, 2735 flow, removed 104 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:05,559 INFO L242 Difference]: Finished difference. Result has 363 places, 348 transitions, 2075 flow [2022-07-21 09:00:05,559 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} [2022-07-21 09:00:05,560 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 149 predicate places. [2022-07-21 09:00:05,560 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 348 transitions, 2075 flow [2022-07-21 09:00:05,561 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) [2022-07-21 09:00:05,561 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:05,561 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] [2022-07-21 09:00:05,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 09:00:05,561 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)] === [2022-07-21 09:00:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:05,562 INFO L85 PathProgramCache]: Analyzing trace with hash -795685710, now seen corresponding path program 5 times [2022-07-21 09:00:05,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:05,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868315020] [2022-07-21 09:00:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:05,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:05,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:05,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868315020] [2022-07-21 09:00:05,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868315020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:05,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:05,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:05,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472878654] [2022-07-21 09:00:05,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:05,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:05,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:05,677 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:05,678 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) [2022-07-21 09:00:05,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:05,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:05,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:06,809 INFO L129 PetriNetUnfolder]: 1220/4858 cut-off events. [2022-07-21 09:00:06,809 INFO L130 PetriNetUnfolder]: For 16315/16413 co-relation queries the response was YES. [2022-07-21 09:00:06,842 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. [2022-07-21 09:00:06,856 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 130 selfloop transitions, 86 changer transitions 24/436 dead transitions. [2022-07-21 09:00:06,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 436 transitions, 3369 flow [2022-07-21 09:00:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4385 transitions. [2022-07-21 09:00:06,861 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8481624758220503 [2022-07-21 09:00:06,861 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4385 transitions. [2022-07-21 09:00:06,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4385 transitions. [2022-07-21 09:00:06,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:06,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4385 transitions. [2022-07-21 09:00:06,866 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) [2022-07-21 09:00:06,872 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) [2022-07-21 09:00:06,873 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) [2022-07-21 09:00:06,873 INFO L186 Difference]: Start difference. First operand has 363 places, 348 transitions, 2075 flow. Second operand 22 states and 4385 transitions. [2022-07-21 09:00:06,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 436 transitions, 3369 flow [2022-07-21 09:00:06,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 436 transitions, 3253 flow, removed 58 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:07,003 INFO L242 Difference]: Finished difference. Result has 394 places, 380 transitions, 2686 flow [2022-07-21 09:00:07,003 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} [2022-07-21 09:00:07,004 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 180 predicate places. [2022-07-21 09:00:07,004 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 380 transitions, 2686 flow [2022-07-21 09:00:07,005 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) [2022-07-21 09:00:07,005 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:07,005 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] [2022-07-21 09:00:07,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 09:00:07,005 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)] === [2022-07-21 09:00:07,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash 840040018, now seen corresponding path program 6 times [2022-07-21 09:00:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:07,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827206405] [2022-07-21 09:00:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:07,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:07,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:07,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827206405] [2022-07-21 09:00:07,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827206405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:07,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:07,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:07,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448343898] [2022-07-21 09:00:07,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:07,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:07,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:07,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:07,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:07,111 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:07,113 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) [2022-07-21 09:00:07,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:07,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:07,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:08,162 INFO L129 PetriNetUnfolder]: 1277/5075 cut-off events. [2022-07-21 09:00:08,162 INFO L130 PetriNetUnfolder]: For 19797/19919 co-relation queries the response was YES. [2022-07-21 09:00:08,200 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. [2022-07-21 09:00:08,212 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 139 selfloop transitions, 89 changer transitions 16/440 dead transitions. [2022-07-21 09:00:08,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 440 transitions, 3797 flow [2022-07-21 09:00:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-21 09:00:08,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-21 09:00:08,216 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-21 09:00:08,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-21 09:00:08,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:08,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-21 09:00:08,220 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) [2022-07-21 09:00:08,223 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) [2022-07-21 09:00:08,223 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) [2022-07-21 09:00:08,223 INFO L186 Difference]: Start difference. First operand has 394 places, 380 transitions, 2686 flow. Second operand 17 states and 3398 transitions. [2022-07-21 09:00:08,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 440 transitions, 3797 flow [2022-07-21 09:00:08,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 440 transitions, 3647 flow, removed 75 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:08,360 INFO L242 Difference]: Finished difference. Result has 415 places, 401 transitions, 3139 flow [2022-07-21 09:00:08,361 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} [2022-07-21 09:00:08,361 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 201 predicate places. [2022-07-21 09:00:08,362 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 401 transitions, 3139 flow [2022-07-21 09:00:08,362 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) [2022-07-21 09:00:08,362 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:08,362 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:08,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 09:00:08,363 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)] === [2022-07-21 09:00:08,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash 80032396, now seen corresponding path program 7 times [2022-07-21 09:00:08,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:08,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009486696] [2022-07-21 09:00:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:08,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:08,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009486696] [2022-07-21 09:00:08,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009486696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:08,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:08,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:08,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228122003] [2022-07-21 09:00:08,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:08,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:08,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:08,463 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:08,464 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) [2022-07-21 09:00:08,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:08,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:08,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:09,566 INFO L129 PetriNetUnfolder]: 1304/5373 cut-off events. [2022-07-21 09:00:09,566 INFO L130 PetriNetUnfolder]: For 23368/23552 co-relation queries the response was YES. [2022-07-21 09:00:09,607 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. [2022-07-21 09:00:09,619 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 147 selfloop transitions, 104 changer transitions 14/461 dead transitions. [2022-07-21 09:00:09,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 461 transitions, 4268 flow [2022-07-21 09:00:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-07-21 09:00:09,622 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-07-21 09:00:09,623 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-07-21 09:00:09,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-07-21 09:00:09,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:09,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-07-21 09:00:09,627 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) [2022-07-21 09:00:09,629 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) [2022-07-21 09:00:09,630 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) [2022-07-21 09:00:09,630 INFO L186 Difference]: Start difference. First operand has 415 places, 401 transitions, 3139 flow. Second operand 16 states and 3198 transitions. [2022-07-21 09:00:09,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 461 transitions, 4268 flow [2022-07-21 09:00:09,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 461 transitions, 4146 flow, removed 61 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:09,777 INFO L242 Difference]: Finished difference. Result has 435 places, 419 transitions, 3566 flow [2022-07-21 09:00:09,777 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} [2022-07-21 09:00:09,778 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 221 predicate places. [2022-07-21 09:00:09,778 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 419 transitions, 3566 flow [2022-07-21 09:00:09,779 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) [2022-07-21 09:00:09,779 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:09,779 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] [2022-07-21 09:00:09,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 09:00:09,779 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)] === [2022-07-21 09:00:09,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1995871614, now seen corresponding path program 8 times [2022-07-21 09:00:09,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:09,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237180167] [2022-07-21 09:00:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:09,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:09,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:09,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237180167] [2022-07-21 09:00:09,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237180167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:09,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:09,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:09,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95754169] [2022-07-21 09:00:09,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:09,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:09,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:09,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:09,880 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:09,881 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) [2022-07-21 09:00:09,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:09,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:09,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:11,244 INFO L129 PetriNetUnfolder]: 1335/5343 cut-off events. [2022-07-21 09:00:11,245 INFO L130 PetriNetUnfolder]: For 24742/24864 co-relation queries the response was YES. [2022-07-21 09:00:11,294 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. [2022-07-21 09:00:11,305 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 171 selfloop transitions, 98 changer transitions 23/488 dead transitions. [2022-07-21 09:00:11,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 488 transitions, 4987 flow [2022-07-21 09:00:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4190 transitions. [2022-07-21 09:00:11,311 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8490374873353597 [2022-07-21 09:00:11,311 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4190 transitions. [2022-07-21 09:00:11,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4190 transitions. [2022-07-21 09:00:11,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:11,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4190 transitions. [2022-07-21 09:00:11,320 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) [2022-07-21 09:00:11,325 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) [2022-07-21 09:00:11,326 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) [2022-07-21 09:00:11,326 INFO L186 Difference]: Start difference. First operand has 435 places, 419 transitions, 3566 flow. Second operand 21 states and 4190 transitions. [2022-07-21 09:00:11,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 488 transitions, 4987 flow [2022-07-21 09:00:11,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 488 transitions, 4849 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-07-21 09:00:11,491 INFO L242 Difference]: Finished difference. Result has 464 places, 443 transitions, 4245 flow [2022-07-21 09:00:11,491 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} [2022-07-21 09:00:11,492 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 250 predicate places. [2022-07-21 09:00:11,492 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 443 transitions, 4245 flow [2022-07-21 09:00:11,492 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) [2022-07-21 09:00:11,492 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:11,492 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] [2022-07-21 09:00:11,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 09:00:11,493 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)] === [2022-07-21 09:00:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:11,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1027007434, now seen corresponding path program 9 times [2022-07-21 09:00:11,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:11,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199308581] [2022-07-21 09:00:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:11,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:11,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:11,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199308581] [2022-07-21 09:00:11,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199308581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:11,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:11,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:11,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666094925] [2022-07-21 09:00:11,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:11,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:11,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:11,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:11,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:11,564 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:11,565 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) [2022-07-21 09:00:11,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:11,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:11,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:12,828 INFO L129 PetriNetUnfolder]: 1335/5528 cut-off events. [2022-07-21 09:00:12,830 INFO L130 PetriNetUnfolder]: For 31145/31341 co-relation queries the response was YES. [2022-07-21 09:00:12,895 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. [2022-07-21 09:00:12,910 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 160 selfloop transitions, 117 changer transitions 23/496 dead transitions. [2022-07-21 09:00:12,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 496 transitions, 5379 flow [2022-07-21 09:00:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-21 09:00:12,915 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-21 09:00:12,915 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-21 09:00:12,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-21 09:00:12,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:12,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-21 09:00:12,920 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) [2022-07-21 09:00:12,924 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) [2022-07-21 09:00:12,924 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) [2022-07-21 09:00:12,925 INFO L186 Difference]: Start difference. First operand has 464 places, 443 transitions, 4245 flow. Second operand 18 states and 3593 transitions. [2022-07-21 09:00:12,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 496 transitions, 5379 flow [2022-07-21 09:00:13,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 496 transitions, 5187 flow, removed 96 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:13,295 INFO L242 Difference]: Finished difference. Result has 485 places, 453 transitions, 4557 flow [2022-07-21 09:00:13,296 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} [2022-07-21 09:00:13,296 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 271 predicate places. [2022-07-21 09:00:13,298 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 453 transitions, 4557 flow [2022-07-21 09:00:13,299 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) [2022-07-21 09:00:13,299 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:13,299 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] [2022-07-21 09:00:13,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 09:00:13,299 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)] === [2022-07-21 09:00:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:13,300 INFO L85 PathProgramCache]: Analyzing trace with hash 331830240, now seen corresponding path program 10 times [2022-07-21 09:00:13,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:13,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064677474] [2022-07-21 09:00:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:13,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:13,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064677474] [2022-07-21 09:00:13,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064677474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:13,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:13,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136861363] [2022-07-21 09:00:13,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:13,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:13,398 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:13,399 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) [2022-07-21 09:00:13,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:13,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:13,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:14,832 INFO L129 PetriNetUnfolder]: 1368/5640 cut-off events. [2022-07-21 09:00:14,832 INFO L130 PetriNetUnfolder]: For 30503/30631 co-relation queries the response was YES. [2022-07-21 09:00:14,887 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. [2022-07-21 09:00:14,902 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 188 selfloop transitions, 107 changer transitions 15/506 dead transitions. [2022-07-21 09:00:14,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 506 transitions, 5851 flow [2022-07-21 09:00:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-21 09:00:14,906 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-21 09:00:14,906 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-21 09:00:14,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-21 09:00:14,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:14,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-21 09:00:14,910 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) [2022-07-21 09:00:14,915 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) [2022-07-21 09:00:14,915 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) [2022-07-21 09:00:14,915 INFO L186 Difference]: Start difference. First operand has 485 places, 453 transitions, 4557 flow. Second operand 17 states and 3398 transitions. [2022-07-21 09:00:14,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 506 transitions, 5851 flow [2022-07-21 09:00:15,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 506 transitions, 5669 flow, removed 47 selfloop flow, removed 4 redundant places. [2022-07-21 09:00:15,200 INFO L242 Difference]: Finished difference. Result has 504 places, 474 transitions, 5100 flow [2022-07-21 09:00:15,200 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} [2022-07-21 09:00:15,201 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 290 predicate places. [2022-07-21 09:00:15,201 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 474 transitions, 5100 flow [2022-07-21 09:00:15,201 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) [2022-07-21 09:00:15,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:15,202 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] [2022-07-21 09:00:15,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 09:00:15,203 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)] === [2022-07-21 09:00:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2122669658, now seen corresponding path program 11 times [2022-07-21 09:00:15,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:15,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948787970] [2022-07-21 09:00:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:15,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:15,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:15,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948787970] [2022-07-21 09:00:15,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948787970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:15,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:15,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:15,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019493857] [2022-07-21 09:00:15,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:15,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:15,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:15,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:15,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:15,280 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:15,281 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) [2022-07-21 09:00:15,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:15,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:15,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:16,860 INFO L129 PetriNetUnfolder]: 1375/5867 cut-off events. [2022-07-21 09:00:16,860 INFO L130 PetriNetUnfolder]: For 34876/35025 co-relation queries the response was YES. [2022-07-21 09:00:16,928 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. [2022-07-21 09:00:16,943 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 173 selfloop transitions, 127 changer transitions 20/516 dead transitions. [2022-07-21 09:00:16,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 516 transitions, 6163 flow [2022-07-21 09:00:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-21 09:00:16,960 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-21 09:00:16,960 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-21 09:00:16,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-21 09:00:16,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:16,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-21 09:00:16,979 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) [2022-07-21 09:00:16,983 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) [2022-07-21 09:00:16,983 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) [2022-07-21 09:00:16,983 INFO L186 Difference]: Start difference. First operand has 504 places, 474 transitions, 5100 flow. Second operand 18 states and 3593 transitions. [2022-07-21 09:00:16,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 516 transitions, 6163 flow [2022-07-21 09:00:17,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 516 transitions, 5985 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-21 09:00:17,240 INFO L242 Difference]: Finished difference. Result has 523 places, 486 transitions, 5477 flow [2022-07-21 09:00:17,241 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} [2022-07-21 09:00:17,241 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 309 predicate places. [2022-07-21 09:00:17,242 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 486 transitions, 5477 flow [2022-07-21 09:00:17,242 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) [2022-07-21 09:00:17,242 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:17,242 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] [2022-07-21 09:00:17,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 09:00:17,243 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)] === [2022-07-21 09:00:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:17,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1393070102, now seen corresponding path program 12 times [2022-07-21 09:00:17,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:17,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151704985] [2022-07-21 09:00:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:17,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:17,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:17,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151704985] [2022-07-21 09:00:17,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151704985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:17,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:17,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:17,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006450420] [2022-07-21 09:00:17,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:17,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:17,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:17,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:17,402 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:17,403 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) [2022-07-21 09:00:17,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:17,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:17,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:18,927 INFO L129 PetriNetUnfolder]: 1370/5689 cut-off events. [2022-07-21 09:00:18,927 INFO L130 PetriNetUnfolder]: For 31921/32052 co-relation queries the response was YES. [2022-07-21 09:00:18,996 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. [2022-07-21 09:00:19,008 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 191 selfloop transitions, 116 changer transitions 24/527 dead transitions. [2022-07-21 09:00:19,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 527 transitions, 6531 flow [2022-07-21 09:00:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3597 transitions. [2022-07-21 09:00:19,017 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850354609929078 [2022-07-21 09:00:19,017 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3597 transitions. [2022-07-21 09:00:19,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3597 transitions. [2022-07-21 09:00:19,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:19,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3597 transitions. [2022-07-21 09:00:19,025 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) [2022-07-21 09:00:19,030 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) [2022-07-21 09:00:19,030 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) [2022-07-21 09:00:19,030 INFO L186 Difference]: Start difference. First operand has 523 places, 486 transitions, 5477 flow. Second operand 18 states and 3597 transitions. [2022-07-21 09:00:19,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 527 transitions, 6531 flow [2022-07-21 09:00:19,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 527 transitions, 6394 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-07-21 09:00:19,501 INFO L242 Difference]: Finished difference. Result has 541 places, 495 transitions, 5838 flow [2022-07-21 09:00:19,501 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} [2022-07-21 09:00:19,502 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 327 predicate places. [2022-07-21 09:00:19,502 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 495 transitions, 5838 flow [2022-07-21 09:00:19,503 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) [2022-07-21 09:00:19,503 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:19,503 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] [2022-07-21 09:00:19,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 09:00:19,503 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)] === [2022-07-21 09:00:19,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash 869174098, now seen corresponding path program 13 times [2022-07-21 09:00:19,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:19,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319443398] [2022-07-21 09:00:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:19,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:19,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319443398] [2022-07-21 09:00:19,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319443398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:19,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:19,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:19,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762650159] [2022-07-21 09:00:19,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:19,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:19,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:19,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:19,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:19,632 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:19,633 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) [2022-07-21 09:00:19,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:19,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:19,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:21,383 INFO L129 PetriNetUnfolder]: 1468/6055 cut-off events. [2022-07-21 09:00:21,384 INFO L130 PetriNetUnfolder]: For 40574/40705 co-relation queries the response was YES. [2022-07-21 09:00:21,450 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. [2022-07-21 09:00:21,467 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 215 selfloop transitions, 144 changer transitions 23/578 dead transitions. [2022-07-21 09:00:21,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 578 transitions, 7572 flow [2022-07-21 09:00:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4383 transitions. [2022-07-21 09:00:21,470 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8477756286266924 [2022-07-21 09:00:21,470 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4383 transitions. [2022-07-21 09:00:21,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4383 transitions. [2022-07-21 09:00:21,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:21,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4383 transitions. [2022-07-21 09:00:21,475 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) [2022-07-21 09:00:21,478 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) [2022-07-21 09:00:21,478 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) [2022-07-21 09:00:21,479 INFO L186 Difference]: Start difference. First operand has 541 places, 495 transitions, 5838 flow. Second operand 22 states and 4383 transitions. [2022-07-21 09:00:21,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 578 transitions, 7572 flow [2022-07-21 09:00:21,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 578 transitions, 7447 flow, removed 61 selfloop flow, removed 3 redundant places. [2022-07-21 09:00:21,827 INFO L242 Difference]: Finished difference. Result has 571 places, 527 transitions, 6764 flow [2022-07-21 09:00:21,828 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} [2022-07-21 09:00:21,829 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 357 predicate places. [2022-07-21 09:00:21,829 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 527 transitions, 6764 flow [2022-07-21 09:00:21,829 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) [2022-07-21 09:00:21,829 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:21,829 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] [2022-07-21 09:00:21,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 09:00:21,830 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)] === [2022-07-21 09:00:21,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash 173628278, now seen corresponding path program 14 times [2022-07-21 09:00:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:21,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992458978] [2022-07-21 09:00:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:21,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:21,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:21,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992458978] [2022-07-21 09:00:21,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992458978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:21,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:21,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871059428] [2022-07-21 09:00:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:21,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:21,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:21,908 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:21,909 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) [2022-07-21 09:00:21,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:21,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:21,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:23,519 INFO L129 PetriNetUnfolder]: 1502/6295 cut-off events. [2022-07-21 09:00:23,519 INFO L130 PetriNetUnfolder]: For 47419/47550 co-relation queries the response was YES. [2022-07-21 09:00:23,592 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. [2022-07-21 09:00:23,609 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 270 selfloop transitions, 106 changer transitions 21/593 dead transitions. [2022-07-21 09:00:23,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 593 transitions, 8429 flow [2022-07-21 09:00:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4187 transitions. [2022-07-21 09:00:23,622 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8484295845997973 [2022-07-21 09:00:23,622 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4187 transitions. [2022-07-21 09:00:23,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4187 transitions. [2022-07-21 09:00:23,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:23,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4187 transitions. [2022-07-21 09:00:23,646 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) [2022-07-21 09:00:23,649 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) [2022-07-21 09:00:23,649 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) [2022-07-21 09:00:23,661 INFO L186 Difference]: Start difference. First operand has 571 places, 527 transitions, 6764 flow. Second operand 21 states and 4187 transitions. [2022-07-21 09:00:23,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 593 transitions, 8429 flow [2022-07-21 09:00:24,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 593 transitions, 8239 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:24,052 INFO L242 Difference]: Finished difference. Result has 601 places, 551 transitions, 7438 flow [2022-07-21 09:00:24,052 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} [2022-07-21 09:00:24,053 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 387 predicate places. [2022-07-21 09:00:24,053 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 551 transitions, 7438 flow [2022-07-21 09:00:24,053 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) [2022-07-21 09:00:24,053 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:24,053 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] [2022-07-21 09:00:24,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 09:00:24,054 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)] === [2022-07-21 09:00:24,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:24,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1231041606, now seen corresponding path program 15 times [2022-07-21 09:00:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:24,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080369689] [2022-07-21 09:00:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:24,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:24,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:24,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080369689] [2022-07-21 09:00:24,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080369689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:24,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:24,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670003897] [2022-07-21 09:00:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:24,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:24,345 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:24,346 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) [2022-07-21 09:00:24,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:24,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:24,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:26,360 INFO L129 PetriNetUnfolder]: 1525/6442 cut-off events. [2022-07-21 09:00:26,361 INFO L130 PetriNetUnfolder]: For 52156/52287 co-relation queries the response was YES. [2022-07-21 09:00:26,441 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. [2022-07-21 09:00:26,458 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 236 selfloop transitions, 162 changer transitions 18/612 dead transitions. [2022-07-21 09:00:26,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 612 transitions, 8986 flow [2022-07-21 09:00:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-21 09:00:26,486 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-21 09:00:26,486 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-21 09:00:26,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-21 09:00:26,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:26,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-21 09:00:26,490 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) [2022-07-21 09:00:26,492 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) [2022-07-21 09:00:26,492 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) [2022-07-21 09:00:26,492 INFO L186 Difference]: Start difference. First operand has 601 places, 551 transitions, 7438 flow. Second operand 18 states and 3593 transitions. [2022-07-21 09:00:26,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 612 transitions, 8986 flow [2022-07-21 09:00:26,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 612 transitions, 8796 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:26,948 INFO L242 Difference]: Finished difference. Result has 622 places, 572 transitions, 8094 flow [2022-07-21 09:00:26,949 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} [2022-07-21 09:00:26,949 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 408 predicate places. [2022-07-21 09:00:26,950 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 572 transitions, 8094 flow [2022-07-21 09:00:26,950 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) [2022-07-21 09:00:26,950 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:26,950 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] [2022-07-21 09:00:26,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 09:00:26,950 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)] === [2022-07-21 09:00:26,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:26,951 INFO L85 PathProgramCache]: Analyzing trace with hash 787764488, now seen corresponding path program 16 times [2022-07-21 09:00:26,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:26,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666556514] [2022-07-21 09:00:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:26,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:27,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:27,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666556514] [2022-07-21 09:00:27,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666556514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:27,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:27,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:27,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043602464] [2022-07-21 09:00:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:27,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:27,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:27,272 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:27,272 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) [2022-07-21 09:00:27,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:27,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:27,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:29,051 INFO L129 PetriNetUnfolder]: 1580/6607 cut-off events. [2022-07-21 09:00:29,051 INFO L130 PetriNetUnfolder]: For 57093/57224 co-relation queries the response was YES. [2022-07-21 09:00:29,138 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. [2022-07-21 09:00:29,156 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 280 selfloop transitions, 135 changer transitions 16/627 dead transitions. [2022-07-21 09:00:29,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 627 transitions, 9692 flow [2022-07-21 09:00:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-21 09:00:29,159 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-21 09:00:29,159 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-21 09:00:29,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-21 09:00:29,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:29,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-21 09:00:29,162 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) [2022-07-21 09:00:29,164 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) [2022-07-21 09:00:29,164 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) [2022-07-21 09:00:29,164 INFO L186 Difference]: Start difference. First operand has 622 places, 572 transitions, 8094 flow. Second operand 17 states and 3397 transitions. [2022-07-21 09:00:29,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 627 transitions, 9692 flow [2022-07-21 09:00:29,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 627 transitions, 9474 flow, removed 109 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:29,901 INFO L242 Difference]: Finished difference. Result has 643 places, 593 transitions, 8730 flow [2022-07-21 09:00:29,902 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} [2022-07-21 09:00:29,902 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 429 predicate places. [2022-07-21 09:00:29,903 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 593 transitions, 8730 flow [2022-07-21 09:00:29,903 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) [2022-07-21 09:00:29,903 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:29,903 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] [2022-07-21 09:00:29,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 09:00:29,904 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)] === [2022-07-21 09:00:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 340551250, now seen corresponding path program 17 times [2022-07-21 09:00:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:29,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428967253] [2022-07-21 09:00:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:30,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428967253] [2022-07-21 09:00:30,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428967253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:30,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:30,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32646843] [2022-07-21 09:00:30,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:30,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:30,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:30,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:30,025 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:30,026 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) [2022-07-21 09:00:30,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:30,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:30,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:32,066 INFO L129 PetriNetUnfolder]: 1603/6826 cut-off events. [2022-07-21 09:00:32,066 INFO L130 PetriNetUnfolder]: For 61184/61315 co-relation queries the response was YES. [2022-07-21 09:00:32,164 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. [2022-07-21 09:00:32,183 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 305 selfloop transitions, 127 changer transitions 17/645 dead transitions. [2022-07-21 09:00:32,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 645 transitions, 10337 flow [2022-07-21 09:00:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-21 09:00:32,186 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-21 09:00:32,186 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-21 09:00:32,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-21 09:00:32,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:32,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-21 09:00:32,189 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) [2022-07-21 09:00:32,191 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) [2022-07-21 09:00:32,191 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) [2022-07-21 09:00:32,191 INFO L186 Difference]: Start difference. First operand has 643 places, 593 transitions, 8730 flow. Second operand 18 states and 3596 transitions. [2022-07-21 09:00:32,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 645 transitions, 10337 flow [2022-07-21 09:00:33,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 645 transitions, 10203 flow, removed 67 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:33,036 INFO L242 Difference]: Finished difference. Result has 664 places, 612 transitions, 9395 flow [2022-07-21 09:00:33,037 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} [2022-07-21 09:00:33,037 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 450 predicate places. [2022-07-21 09:00:33,037 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 612 transitions, 9395 flow [2022-07-21 09:00:33,038 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) [2022-07-21 09:00:33,038 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:33,038 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] [2022-07-21 09:00:33,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 09:00:33,039 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)] === [2022-07-21 09:00:33,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:33,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1026103542, now seen corresponding path program 18 times [2022-07-21 09:00:33,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:33,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565559466] [2022-07-21 09:00:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:33,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:33,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:33,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565559466] [2022-07-21 09:00:33,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565559466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:33,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:33,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:33,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776323658] [2022-07-21 09:00:33,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:33,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:33,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:33,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:33,126 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) [2022-07-21 09:00:33,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:33,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:33,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:35,215 INFO L129 PetriNetUnfolder]: 1606/6864 cut-off events. [2022-07-21 09:00:35,215 INFO L130 PetriNetUnfolder]: For 64603/64734 co-relation queries the response was YES. [2022-07-21 09:00:35,312 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. [2022-07-21 09:00:35,331 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 260 selfloop transitions, 179 changer transitions 22/657 dead transitions. [2022-07-21 09:00:35,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 657 transitions, 10708 flow [2022-07-21 09:00:35,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3201 transitions. [2022-07-21 09:00:35,334 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513297872340425 [2022-07-21 09:00:35,334 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3201 transitions. [2022-07-21 09:00:35,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3201 transitions. [2022-07-21 09:00:35,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:35,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3201 transitions. [2022-07-21 09:00:35,337 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) [2022-07-21 09:00:35,339 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) [2022-07-21 09:00:35,340 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) [2022-07-21 09:00:35,340 INFO L186 Difference]: Start difference. First operand has 664 places, 612 transitions, 9395 flow. Second operand 16 states and 3201 transitions. [2022-07-21 09:00:35,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 657 transitions, 10708 flow [2022-07-21 09:00:35,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 657 transitions, 10536 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:35,968 INFO L242 Difference]: Finished difference. Result has 682 places, 620 transitions, 9803 flow [2022-07-21 09:00:35,968 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} [2022-07-21 09:00:35,969 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 468 predicate places. [2022-07-21 09:00:35,969 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 620 transitions, 9803 flow [2022-07-21 09:00:35,969 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) [2022-07-21 09:00:35,970 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:35,970 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] [2022-07-21 09:00:35,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 09:00:35,970 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)] === [2022-07-21 09:00:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:35,971 INFO L85 PathProgramCache]: Analyzing trace with hash 157105292, now seen corresponding path program 19 times [2022-07-21 09:00:35,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:35,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235190371] [2022-07-21 09:00:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:35,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:36,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:36,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235190371] [2022-07-21 09:00:36,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235190371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:36,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:36,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:36,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209246632] [2022-07-21 09:00:36,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:36,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:36,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:36,052 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:36,053 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) [2022-07-21 09:00:36,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:36,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:36,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:38,473 INFO L129 PetriNetUnfolder]: 1625/7174 cut-off events. [2022-07-21 09:00:38,474 INFO L130 PetriNetUnfolder]: For 70157/70288 co-relation queries the response was YES. [2022-07-21 09:00:38,571 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. [2022-07-21 09:00:38,589 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 312 selfloop transitions, 135 changer transitions 22/665 dead transitions. [2022-07-21 09:00:38,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 665 transitions, 11273 flow [2022-07-21 09:00:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:38,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3401 transitions. [2022-07-21 09:00:38,592 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513141426783479 [2022-07-21 09:00:38,592 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3401 transitions. [2022-07-21 09:00:38,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3401 transitions. [2022-07-21 09:00:38,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:38,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3401 transitions. [2022-07-21 09:00:38,595 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) [2022-07-21 09:00:38,597 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) [2022-07-21 09:00:38,598 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) [2022-07-21 09:00:38,598 INFO L186 Difference]: Start difference. First operand has 682 places, 620 transitions, 9803 flow. Second operand 17 states and 3401 transitions. [2022-07-21 09:00:38,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 665 transitions, 11273 flow [2022-07-21 09:00:39,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 665 transitions, 10968 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-21 09:00:39,243 INFO L242 Difference]: Finished difference. Result has 698 places, 633 transitions, 10169 flow [2022-07-21 09:00:39,244 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} [2022-07-21 09:00:39,244 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 484 predicate places. [2022-07-21 09:00:39,244 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 633 transitions, 10169 flow [2022-07-21 09:00:39,245 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) [2022-07-21 09:00:39,245 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:39,245 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] [2022-07-21 09:00:39,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 09:00:39,245 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)] === [2022-07-21 09:00:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:39,246 INFO L85 PathProgramCache]: Analyzing trace with hash 573914000, now seen corresponding path program 20 times [2022-07-21 09:00:39,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:39,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870710050] [2022-07-21 09:00:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:39,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:39,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870710050] [2022-07-21 09:00:39,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870710050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:39,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:39,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858539510] [2022-07-21 09:00:39,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:39,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:39,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:39,317 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:39,317 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) [2022-07-21 09:00:39,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:39,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:39,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:41,624 INFO L129 PetriNetUnfolder]: 1625/7156 cut-off events. [2022-07-21 09:00:41,626 INFO L130 PetriNetUnfolder]: For 70851/70982 co-relation queries the response was YES. [2022-07-21 09:00:41,740 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. [2022-07-21 09:00:41,761 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 298 selfloop transitions, 153 changer transitions 27/674 dead transitions. [2022-07-21 09:00:41,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 674 transitions, 11514 flow [2022-07-21 09:00:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-21 09:00:41,765 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-21 09:00:41,765 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-21 09:00:41,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-21 09:00:41,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:41,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-21 09:00:41,768 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) [2022-07-21 09:00:41,770 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) [2022-07-21 09:00:41,771 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) [2022-07-21 09:00:41,771 INFO L186 Difference]: Start difference. First operand has 698 places, 633 transitions, 10169 flow. Second operand 18 states and 3596 transitions. [2022-07-21 09:00:41,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 674 transitions, 11514 flow [2022-07-21 09:00:42,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 674 transitions, 11345 flow, removed 48 selfloop flow, removed 3 redundant places. [2022-07-21 09:00:42,399 INFO L242 Difference]: Finished difference. Result has 717 places, 642 transitions, 10587 flow [2022-07-21 09:00:42,400 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} [2022-07-21 09:00:42,400 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 503 predicate places. [2022-07-21 09:00:42,400 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 642 transitions, 10587 flow [2022-07-21 09:00:42,401 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) [2022-07-21 09:00:42,401 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:42,401 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] [2022-07-21 09:00:42,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 09:00:42,402 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)] === [2022-07-21 09:00:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 324066382, now seen corresponding path program 1 times [2022-07-21 09:00:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390504554] [2022-07-21 09:00:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:42,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:42,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:42,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390504554] [2022-07-21 09:00:42,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390504554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:42,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:42,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483293859] [2022-07-21 09:00:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:42,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:42,528 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:42,529 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) [2022-07-21 09:00:42,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:42,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:42,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:44,832 INFO L129 PetriNetUnfolder]: 1623/6822 cut-off events. [2022-07-21 09:00:44,833 INFO L130 PetriNetUnfolder]: For 75736/75863 co-relation queries the response was YES. [2022-07-21 09:00:44,928 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. [2022-07-21 09:00:44,942 INFO L132 encePairwiseOnDemand]: 220/235 looper letters, 439 selfloop transitions, 88 changer transitions 18/739 dead transitions. [2022-07-21 09:00:44,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 739 transitions, 12323 flow [2022-07-21 09:00:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3227 transitions. [2022-07-21 09:00:44,944 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8582446808510639 [2022-07-21 09:00:44,945 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3227 transitions. [2022-07-21 09:00:44,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3227 transitions. [2022-07-21 09:00:44,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:44,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3227 transitions. [2022-07-21 09:00:44,948 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) [2022-07-21 09:00:44,951 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) [2022-07-21 09:00:44,951 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) [2022-07-21 09:00:44,951 INFO L186 Difference]: Start difference. First operand has 717 places, 642 transitions, 10587 flow. Second operand 16 states and 3227 transitions. [2022-07-21 09:00:44,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 739 transitions, 12323 flow [2022-07-21 09:00:45,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 739 transitions, 12121 flow, removed 62 selfloop flow, removed 4 redundant places. [2022-07-21 09:00:45,580 INFO L242 Difference]: Finished difference. Result has 738 places, 675 transitions, 10939 flow [2022-07-21 09:00:45,581 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} [2022-07-21 09:00:45,581 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 524 predicate places. [2022-07-21 09:00:45,581 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 675 transitions, 10939 flow [2022-07-21 09:00:45,581 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) [2022-07-21 09:00:45,582 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:45,582 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] [2022-07-21 09:00:45,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 09:00:45,582 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)] === [2022-07-21 09:00:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash 809221024, now seen corresponding path program 1 times [2022-07-21 09:00:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92396310] [2022-07-21 09:00:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:45,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:45,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:45,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92396310] [2022-07-21 09:00:45,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92396310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:45,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:45,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:00:45,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733082002] [2022-07-21 09:00:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:45,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:00:45,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:00:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:00:45,621 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-21 09:00:45,622 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) [2022-07-21 09:00:45,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:45,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-21 09:00:45,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:46,572 INFO L129 PetriNetUnfolder]: 453/3449 cut-off events. [2022-07-21 09:00:46,573 INFO L130 PetriNetUnfolder]: For 37902/38341 co-relation queries the response was YES. [2022-07-21 09:00:46,626 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. [2022-07-21 09:00:46,631 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 19 selfloop transitions, 0 changer transitions 475/695 dead transitions. [2022-07-21 09:00:46,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 695 transitions, 11076 flow [2022-07-21 09:00:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:00:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:00:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-21 09:00:46,632 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-21 09:00:46,633 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-21 09:00:46,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-21 09:00:46,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:46,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-21 09:00:46,634 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) [2022-07-21 09:00:46,635 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) [2022-07-21 09:00:46,636 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) [2022-07-21 09:00:46,636 INFO L186 Difference]: Start difference. First operand has 738 places, 675 transitions, 10939 flow. Second operand 9 states and 1861 transitions. [2022-07-21 09:00:46,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 695 transitions, 11076 flow [2022-07-21 09:00:46,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 695 transitions, 10500 flow, removed 132 selfloop flow, removed 62 redundant places. [2022-07-21 09:00:47,003 INFO L242 Difference]: Finished difference. Result has 688 places, 220 transitions, 786 flow [2022-07-21 09:00:47,003 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} [2022-07-21 09:00:47,004 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 474 predicate places. [2022-07-21 09:00:47,004 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 220 transitions, 786 flow [2022-07-21 09:00:47,004 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) [2022-07-21 09:00:47,004 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:47,005 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] [2022-07-21 09:00:47,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 09:00:47,005 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)] === [2022-07-21 09:00:47,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1449884105, now seen corresponding path program 1 times [2022-07-21 09:00:47,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:47,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152166076] [2022-07-21 09:00:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:47,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:47,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:47,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152166076] [2022-07-21 09:00:47,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152166076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:47,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:47,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:47,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981444039] [2022-07-21 09:00:47,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:47,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:47,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:47,117 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:47,118 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) [2022-07-21 09:00:47,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:47,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:47,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:47,872 INFO L129 PetriNetUnfolder]: 460/1907 cut-off events. [2022-07-21 09:00:47,872 INFO L130 PetriNetUnfolder]: For 5592/5633 co-relation queries the response was YES. [2022-07-21 09:00:47,900 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. [2022-07-21 09:00:47,907 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 86 selfloop transitions, 33 changer transitions 28/328 dead transitions. [2022-07-21 09:00:47,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 328 transitions, 1567 flow [2022-07-21 09:00:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4790 transitions. [2022-07-21 09:00:47,911 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.849290780141844 [2022-07-21 09:00:47,911 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4790 transitions. [2022-07-21 09:00:47,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4790 transitions. [2022-07-21 09:00:47,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:47,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4790 transitions. [2022-07-21 09:00:47,917 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) [2022-07-21 09:00:47,920 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) [2022-07-21 09:00:47,921 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) [2022-07-21 09:00:47,921 INFO L186 Difference]: Start difference. First operand has 688 places, 220 transitions, 786 flow. Second operand 24 states and 4790 transitions. [2022-07-21 09:00:47,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 328 transitions, 1567 flow [2022-07-21 09:00:47,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 1265 flow, removed 123 selfloop flow, removed 72 redundant places. [2022-07-21 09:00:47,947 INFO L242 Difference]: Finished difference. Result has 353 places, 250 transitions, 880 flow [2022-07-21 09:00:47,947 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} [2022-07-21 09:00:47,949 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 139 predicate places. [2022-07-21 09:00:47,949 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 250 transitions, 880 flow [2022-07-21 09:00:47,949 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) [2022-07-21 09:00:47,949 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:47,949 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 09:00:47,950 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)] === [2022-07-21 09:00:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1247485979, now seen corresponding path program 2 times [2022-07-21 09:00:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:47,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867854221] [2022-07-21 09:00:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:47,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:48,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:48,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867854221] [2022-07-21 09:00:48,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867854221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:48,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:48,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:48,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549429823] [2022-07-21 09:00:48,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:48,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:48,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:48,062 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:48,063 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) [2022-07-21 09:00:48,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:48,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:48,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:48,611 INFO L129 PetriNetUnfolder]: 533/2184 cut-off events. [2022-07-21 09:00:48,611 INFO L130 PetriNetUnfolder]: For 4210/4251 co-relation queries the response was YES. [2022-07-21 09:00:48,636 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. [2022-07-21 09:00:48,644 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 85 selfloop transitions, 36 changer transitions 16/318 dead transitions. [2022-07-21 09:00:48,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 318 transitions, 1593 flow [2022-07-21 09:00:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-07-21 09:00:48,646 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-07-21 09:00:48,647 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-07-21 09:00:48,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-07-21 09:00:48,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:48,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-07-21 09:00:48,649 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) [2022-07-21 09:00:48,654 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) [2022-07-21 09:00:48,654 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) [2022-07-21 09:00:48,654 INFO L186 Difference]: Start difference. First operand has 353 places, 250 transitions, 880 flow. Second operand 16 states and 3198 transitions. [2022-07-21 09:00:48,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 318 transitions, 1593 flow [2022-07-21 09:00:48,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 318 transitions, 1553 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:48,672 INFO L242 Difference]: Finished difference. Result has 375 places, 274 transitions, 1236 flow [2022-07-21 09:00:48,672 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} [2022-07-21 09:00:48,672 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 161 predicate places. [2022-07-21 09:00:48,672 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 274 transitions, 1236 flow [2022-07-21 09:00:48,673 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) [2022-07-21 09:00:48,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:48,673 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] [2022-07-21 09:00:48,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 09:00:48,673 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)] === [2022-07-21 09:00:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash -582070785, now seen corresponding path program 3 times [2022-07-21 09:00:48,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:48,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670744874] [2022-07-21 09:00:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:48,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:48,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:48,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670744874] [2022-07-21 09:00:48,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670744874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:48,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:48,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:48,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146477388] [2022-07-21 09:00:48,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:48,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:48,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:48,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:48,768 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:48,769 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) [2022-07-21 09:00:48,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:48,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:48,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:49,357 INFO L129 PetriNetUnfolder]: 597/2436 cut-off events. [2022-07-21 09:00:49,357 INFO L130 PetriNetUnfolder]: For 8402/8560 co-relation queries the response was YES. [2022-07-21 09:00:49,387 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. [2022-07-21 09:00:49,393 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 108 selfloop transitions, 45 changer transitions 14/348 dead transitions. [2022-07-21 09:00:49,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 348 transitions, 2213 flow [2022-07-21 09:00:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3197 transitions. [2022-07-21 09:00:49,396 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8502659574468086 [2022-07-21 09:00:49,397 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3197 transitions. [2022-07-21 09:00:49,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3197 transitions. [2022-07-21 09:00:49,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:49,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3197 transitions. [2022-07-21 09:00:49,400 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) [2022-07-21 09:00:49,416 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) [2022-07-21 09:00:49,418 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) [2022-07-21 09:00:49,431 INFO L186 Difference]: Start difference. First operand has 375 places, 274 transitions, 1236 flow. Second operand 16 states and 3197 transitions. [2022-07-21 09:00:49,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 348 transitions, 2213 flow [2022-07-21 09:00:49,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 348 transitions, 1987 flow, removed 113 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:49,490 INFO L242 Difference]: Finished difference. Result has 396 places, 294 transitions, 1467 flow [2022-07-21 09:00:49,491 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} [2022-07-21 09:00:49,492 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 182 predicate places. [2022-07-21 09:00:49,492 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 294 transitions, 1467 flow [2022-07-21 09:00:49,492 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) [2022-07-21 09:00:49,492 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:49,496 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] [2022-07-21 09:00:49,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 09:00:49,497 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)] === [2022-07-21 09:00:49,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:49,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1454581957, now seen corresponding path program 4 times [2022-07-21 09:00:49,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:49,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161934147] [2022-07-21 09:00:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:49,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:49,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:49,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161934147] [2022-07-21 09:00:49,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161934147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:49,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:49,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853948886] [2022-07-21 09:00:49,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:49,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:49,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:49,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:49,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:49,644 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:49,645 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) [2022-07-21 09:00:49,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:49,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:49,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:50,392 INFO L129 PetriNetUnfolder]: 742/2909 cut-off events. [2022-07-21 09:00:50,393 INFO L130 PetriNetUnfolder]: For 12491/12688 co-relation queries the response was YES. [2022-07-21 09:00:50,438 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. [2022-07-21 09:00:50,447 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 130 selfloop transitions, 50 changer transitions 23/384 dead transitions. [2022-07-21 09:00:50,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 384 transitions, 2746 flow [2022-07-21 09:00:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4189 transitions. [2022-07-21 09:00:50,450 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8488348530901723 [2022-07-21 09:00:50,450 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4189 transitions. [2022-07-21 09:00:50,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4189 transitions. [2022-07-21 09:00:50,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:50,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4189 transitions. [2022-07-21 09:00:50,579 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) [2022-07-21 09:00:50,581 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) [2022-07-21 09:00:50,581 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) [2022-07-21 09:00:50,581 INFO L186 Difference]: Start difference. First operand has 396 places, 294 transitions, 1467 flow. Second operand 21 states and 4189 transitions. [2022-07-21 09:00:50,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 384 transitions, 2746 flow [2022-07-21 09:00:50,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 384 transitions, 2602 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-21 09:00:50,634 INFO L242 Difference]: Finished difference. Result has 426 places, 328 transitions, 2034 flow [2022-07-21 09:00:50,635 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} [2022-07-21 09:00:50,635 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 212 predicate places. [2022-07-21 09:00:50,635 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 328 transitions, 2034 flow [2022-07-21 09:00:50,636 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) [2022-07-21 09:00:50,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:50,636 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] [2022-07-21 09:00:50,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 09:00:50,636 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)] === [2022-07-21 09:00:50,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash -897077963, now seen corresponding path program 5 times [2022-07-21 09:00:50,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:50,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463553148] [2022-07-21 09:00:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:50,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:50,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:50,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463553148] [2022-07-21 09:00:50,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463553148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:50,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:50,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:50,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443868735] [2022-07-21 09:00:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:50,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:50,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:50,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:50,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:50,716 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:50,717 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) [2022-07-21 09:00:50,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:50,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:50,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:51,429 INFO L129 PetriNetUnfolder]: 784/3115 cut-off events. [2022-07-21 09:00:51,429 INFO L130 PetriNetUnfolder]: For 19730/19811 co-relation queries the response was YES. [2022-07-21 09:00:51,472 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. [2022-07-21 09:00:51,481 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 141 selfloop transitions, 60 changer transitions 22/404 dead transitions. [2022-07-21 09:00:51,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 404 transitions, 3334 flow [2022-07-21 09:00:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3990 transitions. [2022-07-21 09:00:51,484 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2022-07-21 09:00:51,484 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3990 transitions. [2022-07-21 09:00:51,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3990 transitions. [2022-07-21 09:00:51,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:51,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3990 transitions. [2022-07-21 09:00:51,487 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) [2022-07-21 09:00:51,489 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) [2022-07-21 09:00:51,490 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) [2022-07-21 09:00:51,490 INFO L186 Difference]: Start difference. First operand has 426 places, 328 transitions, 2034 flow. Second operand 20 states and 3990 transitions. [2022-07-21 09:00:51,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 404 transitions, 3334 flow [2022-07-21 09:00:51,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 404 transitions, 3006 flow, removed 164 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:51,609 INFO L242 Difference]: Finished difference. Result has 456 places, 360 transitions, 2475 flow [2022-07-21 09:00:51,609 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} [2022-07-21 09:00:51,609 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 242 predicate places. [2022-07-21 09:00:51,610 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 360 transitions, 2475 flow [2022-07-21 09:00:51,610 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) [2022-07-21 09:00:51,610 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:51,610 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] [2022-07-21 09:00:51,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 09:00:51,610 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)] === [2022-07-21 09:00:51,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:51,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2122342847, now seen corresponding path program 6 times [2022-07-21 09:00:51,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:51,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016068184] [2022-07-21 09:00:51,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:51,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:51,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:51,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016068184] [2022-07-21 09:00:51,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016068184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:51,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:51,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693350110] [2022-07-21 09:00:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:51,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:51,677 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:51,678 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) [2022-07-21 09:00:51,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:51,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:51,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:52,506 INFO L129 PetriNetUnfolder]: 829/3326 cut-off events. [2022-07-21 09:00:52,506 INFO L130 PetriNetUnfolder]: For 23646/23720 co-relation queries the response was YES. [2022-07-21 09:00:52,561 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. [2022-07-21 09:00:52,571 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 155 selfloop transitions, 103 changer transitions 26/465 dead transitions. [2022-07-21 09:00:52,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 465 transitions, 4043 flow [2022-07-21 09:00:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4782 transitions. [2022-07-21 09:00:52,574 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.847872340425532 [2022-07-21 09:00:52,574 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4782 transitions. [2022-07-21 09:00:52,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4782 transitions. [2022-07-21 09:00:52,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:52,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4782 transitions. [2022-07-21 09:00:52,577 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) [2022-07-21 09:00:52,580 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) [2022-07-21 09:00:52,580 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) [2022-07-21 09:00:52,581 INFO L186 Difference]: Start difference. First operand has 456 places, 360 transitions, 2475 flow. Second operand 24 states and 4782 transitions. [2022-07-21 09:00:52,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 465 transitions, 4043 flow [2022-07-21 09:00:52,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 465 transitions, 3739 flow, removed 152 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:52,714 INFO L242 Difference]: Finished difference. Result has 494 places, 386 transitions, 2979 flow [2022-07-21 09:00:52,714 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} [2022-07-21 09:00:52,715 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 280 predicate places. [2022-07-21 09:00:52,715 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 386 transitions, 2979 flow [2022-07-21 09:00:52,715 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) [2022-07-21 09:00:52,715 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:52,715 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:52,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 09:00:52,716 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)] === [2022-07-21 09:00:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1817715829, now seen corresponding path program 7 times [2022-07-21 09:00:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:52,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253141012] [2022-07-21 09:00:52,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:52,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:52,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:52,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253141012] [2022-07-21 09:00:52,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253141012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:52,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:52,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:52,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856469070] [2022-07-21 09:00:52,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:52,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:52,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:52,787 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:52,788 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) [2022-07-21 09:00:52,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:52,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:52,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:53,676 INFO L129 PetriNetUnfolder]: 863/3579 cut-off events. [2022-07-21 09:00:53,676 INFO L130 PetriNetUnfolder]: For 30286/30599 co-relation queries the response was YES. [2022-07-21 09:00:53,732 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. [2022-07-21 09:00:53,742 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 166 selfloop transitions, 97 changer transitions 24/468 dead transitions. [2022-07-21 09:00:53,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 468 transitions, 4508 flow [2022-07-21 09:00:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4384 transitions. [2022-07-21 09:00:53,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8479690522243714 [2022-07-21 09:00:53,750 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4384 transitions. [2022-07-21 09:00:53,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4384 transitions. [2022-07-21 09:00:53,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:53,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4384 transitions. [2022-07-21 09:00:53,753 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) [2022-07-21 09:00:53,757 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) [2022-07-21 09:00:53,757 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) [2022-07-21 09:00:53,757 INFO L186 Difference]: Start difference. First operand has 494 places, 386 transitions, 2979 flow. Second operand 22 states and 4384 transitions. [2022-07-21 09:00:53,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 468 transitions, 4508 flow [2022-07-21 09:00:53,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 468 transitions, 4438 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-07-21 09:00:53,935 INFO L242 Difference]: Finished difference. Result has 523 places, 410 transitions, 3643 flow [2022-07-21 09:00:53,936 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} [2022-07-21 09:00:53,936 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 309 predicate places. [2022-07-21 09:00:53,937 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 410 transitions, 3643 flow [2022-07-21 09:00:53,937 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) [2022-07-21 09:00:53,937 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:53,937 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] [2022-07-21 09:00:53,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 09:00:53,937 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)] === [2022-07-21 09:00:53,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2059723653, now seen corresponding path program 8 times [2022-07-21 09:00:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:53,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988054386] [2022-07-21 09:00:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:53,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:54,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:54,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988054386] [2022-07-21 09:00:54,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988054386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:54,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:54,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:54,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548984067] [2022-07-21 09:00:54,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:54,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:54,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:54,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:54,017 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:54,028 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) [2022-07-21 09:00:54,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:54,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:54,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:55,000 INFO L129 PetriNetUnfolder]: 902/3737 cut-off events. [2022-07-21 09:00:55,001 INFO L130 PetriNetUnfolder]: For 39164/39246 co-relation queries the response was YES. [2022-07-21 09:00:55,061 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. [2022-07-21 09:00:55,071 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 182 selfloop transitions, 105 changer transitions 19/487 dead transitions. [2022-07-21 09:00:55,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 487 transitions, 5223 flow [2022-07-21 09:00:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3987 transitions. [2022-07-21 09:00:55,074 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8482978723404255 [2022-07-21 09:00:55,074 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3987 transitions. [2022-07-21 09:00:55,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3987 transitions. [2022-07-21 09:00:55,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:55,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3987 transitions. [2022-07-21 09:00:55,077 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) [2022-07-21 09:00:55,079 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) [2022-07-21 09:00:55,080 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) [2022-07-21 09:00:55,080 INFO L186 Difference]: Start difference. First operand has 523 places, 410 transitions, 3643 flow. Second operand 20 states and 3987 transitions. [2022-07-21 09:00:55,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 487 transitions, 5223 flow [2022-07-21 09:00:55,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 487 transitions, 5018 flow, removed 95 selfloop flow, removed 4 redundant places. [2022-07-21 09:00:55,320 INFO L242 Difference]: Finished difference. Result has 550 places, 442 transitions, 4444 flow [2022-07-21 09:00:55,321 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} [2022-07-21 09:00:55,322 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 336 predicate places. [2022-07-21 09:00:55,322 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 442 transitions, 4444 flow [2022-07-21 09:00:55,322 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) [2022-07-21 09:00:55,322 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:55,322 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] [2022-07-21 09:00:55,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-21 09:00:55,323 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)] === [2022-07-21 09:00:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1477857535, now seen corresponding path program 9 times [2022-07-21 09:00:55,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:55,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547379021] [2022-07-21 09:00:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:55,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:55,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:55,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547379021] [2022-07-21 09:00:55,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547379021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:55,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:55,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:55,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446187833] [2022-07-21 09:00:55,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:55,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:55,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:55,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:55,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:55,402 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:55,403 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) [2022-07-21 09:00:55,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:55,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:55,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:56,590 INFO L129 PetriNetUnfolder]: 899/3813 cut-off events. [2022-07-21 09:00:56,590 INFO L130 PetriNetUnfolder]: For 42823/43110 co-relation queries the response was YES. [2022-07-21 09:00:56,676 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. [2022-07-21 09:00:56,689 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 183 selfloop transitions, 116 changer transitions 23/503 dead transitions. [2022-07-21 09:00:56,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 503 transitions, 5885 flow [2022-07-21 09:00:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3592 transitions. [2022-07-21 09:00:56,693 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8491725768321513 [2022-07-21 09:00:56,693 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3592 transitions. [2022-07-21 09:00:56,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3592 transitions. [2022-07-21 09:00:56,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:56,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3592 transitions. [2022-07-21 09:00:56,696 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) [2022-07-21 09:00:56,699 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) [2022-07-21 09:00:56,699 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) [2022-07-21 09:00:56,699 INFO L186 Difference]: Start difference. First operand has 550 places, 442 transitions, 4444 flow. Second operand 18 states and 3592 transitions. [2022-07-21 09:00:56,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 503 transitions, 5885 flow [2022-07-21 09:00:57,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 503 transitions, 5493 flow, removed 196 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:57,038 INFO L242 Difference]: Finished difference. Result has 570 places, 451 transitions, 4694 flow [2022-07-21 09:00:57,051 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} [2022-07-21 09:00:57,052 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 356 predicate places. [2022-07-21 09:00:57,052 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 451 transitions, 4694 flow [2022-07-21 09:00:57,052 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) [2022-07-21 09:00:57,052 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:57,053 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] [2022-07-21 09:00:57,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-21 09:00:57,053 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)] === [2022-07-21 09:00:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash -916504195, now seen corresponding path program 10 times [2022-07-21 09:00:57,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:57,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053401480] [2022-07-21 09:00:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:57,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:57,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:57,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053401480] [2022-07-21 09:00:57,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053401480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:57,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:57,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:57,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109726493] [2022-07-21 09:00:57,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:57,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:57,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:57,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:57,130 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:57,131 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) [2022-07-21 09:00:57,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:57,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:57,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:58,267 INFO L129 PetriNetUnfolder]: 957/4035 cut-off events. [2022-07-21 09:00:58,268 INFO L130 PetriNetUnfolder]: For 38816/38898 co-relation queries the response was YES. [2022-07-21 09:00:58,353 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. [2022-07-21 09:00:58,365 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 201 selfloop transitions, 116 changer transitions 16/514 dead transitions. [2022-07-21 09:00:58,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 514 transitions, 6167 flow [2022-07-21 09:00:58,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-21 09:00:58,368 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-21 09:00:58,368 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-21 09:00:58,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-21 09:00:58,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:58,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-21 09:00:58,371 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) [2022-07-21 09:00:58,373 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) [2022-07-21 09:00:58,373 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) [2022-07-21 09:00:58,373 INFO L186 Difference]: Start difference. First operand has 570 places, 451 transitions, 4694 flow. Second operand 17 states and 3397 transitions. [2022-07-21 09:00:58,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 514 transitions, 6167 flow [2022-07-21 09:00:58,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 514 transitions, 5981 flow, removed 46 selfloop flow, removed 6 redundant places. [2022-07-21 09:00:58,646 INFO L242 Difference]: Finished difference. Result has 586 places, 473 transitions, 5321 flow [2022-07-21 09:00:58,647 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} [2022-07-21 09:00:58,647 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 372 predicate places. [2022-07-21 09:00:58,647 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 473 transitions, 5321 flow [2022-07-21 09:00:58,648 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) [2022-07-21 09:00:58,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:58,648 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] [2022-07-21 09:00:58,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-21 09:00:58,648 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)] === [2022-07-21 09:00:58,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1806241857, now seen corresponding path program 11 times [2022-07-21 09:00:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:58,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778472975] [2022-07-21 09:00:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:58,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:58,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:58,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778472975] [2022-07-21 09:00:58,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778472975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:58,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:58,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:58,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013688966] [2022-07-21 09:00:58,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:58,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:58,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:58,730 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-21 09:00:58,731 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) [2022-07-21 09:00:58,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:58,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-21 09:00:58,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand