./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-symm.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-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:59:57,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:59:57,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:59:57,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:59:57,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:59:57,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:59:57,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:59:57,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:59:57,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:59:57,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:59:57,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:59:57,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:59:57,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:59:57,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:59:57,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:59:57,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:59:57,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:59:57,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:59:57,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:59:57,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:59:57,410 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:59:57,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:59:57,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:59:57,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:59:57,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:59:57,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:59:57,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:59:57,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:59:57,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:59:57,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:59:57,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:59:57,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:59:57,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:59:57,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:59:57,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:59:57,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:59:57,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:59:57,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:59:57,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:59:57,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:59:57,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:59:57,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:59:57,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:59:57,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:59:57,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:59:57,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:59:57,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:59:57,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:59:57,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:59:57,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:59:57,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:59:57,445 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:59:57,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:59:57,446 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:59:57,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:59:57,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:59:57,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:59:57,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:59:57,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:59:57,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:59:57,453 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:59:57,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:59:57,453 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:59:57,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:59:57,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:59:57,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:59:57,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:59:57,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:57,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:59:57,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:59:57,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:59:57,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:59:57,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:59:57,455 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:59:57,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:59:57,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:59:57,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2022-07-21 08:59:57,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:59:57,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:59:57,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:59:57,712 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:59:57,712 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:59:57,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-07-21 08:59:57,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427591913/2738b89e41174c4db6d28e9d48b7525b/FLAGbfaf18715 [2022-07-21 08:59:58,141 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:59:58,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-07-21 08:59:58,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427591913/2738b89e41174c4db6d28e9d48b7525b/FLAGbfaf18715 [2022-07-21 08:59:58,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427591913/2738b89e41174c4db6d28e9d48b7525b [2022-07-21 08:59:58,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:59:58,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:59:58,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:58,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:59:58,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:59:58,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c5fa955 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 08:59:58,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:58" (1/1) ... [2022-07-21 08:59:58,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:59:58,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:59:58,366 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-symm.wvr.c[2303,2316] [2022-07-21 08:59:58,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:58,379 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:59:58,441 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-symm.wvr.c[2303,2316] [2022-07-21 08:59:58,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:58,456 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:59:58,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:58 WrapperNode [2022-07-21 08:59:58,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:58,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:58,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:59:58,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:59:58,463 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 08:59:58,474 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 08:59:58,504 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 130 [2022-07-21 08:59:58,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:58,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:59:58,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:59:58,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:59:58,513 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 08:59:58,514 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 08:59:58,524 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 08:59:58,525 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 08:59:58,535 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 08:59:58,543 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 08:59:58,544 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 08:59:58,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:59:58,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:59:58,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:59:58,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:59:58,548 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 08:59:58,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:58,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:58,587 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 08:59:58,611 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 08:59:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:59:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:59:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:59:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:59:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:59:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:59:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:59:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:59:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:59:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:59:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:59:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:59:58,627 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 08:59:58,697 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:59:58,698 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:59:58,948 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:59:58,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:59:58,955 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:59:58,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:58 BoogieIcfgContainer [2022-07-21 08:59:58,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:59:58,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:59:58,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:59:58,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:59:58,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:59:58" (1/3) ... [2022-07-21 08:59:58,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c764c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:58, skipping insertion in model container [2022-07-21 08:59:58,968 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 08:59:58,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c764c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:58, skipping insertion in model container [2022-07-21 08:59:58,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:58" (3/3) ... [2022-07-21 08:59:58,969 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-07-21 08:59:58,973 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:59:58,978 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:59:58,979 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:59:58,979 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:59:59,041 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:59:59,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 368 flow [2022-07-21 08:59:59,172 INFO L129 PetriNetUnfolder]: 13/174 cut-off events. [2022-07-21 08:59:59,172 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:59:59,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 13/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 288 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-07-21 08:59:59,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 176 transitions, 368 flow [2022-07-21 08:59:59,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 165 transitions, 342 flow [2022-07-21 08:59:59,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:59:59,205 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@7d5dd883, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a36b5ba [2022-07-21 08:59:59,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 08:59:59,242 INFO L129 PetriNetUnfolder]: 13/164 cut-off events. [2022-07-21 08:59:59,243 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:59:59,243 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:59,244 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] [2022-07-21 08:59:59,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1136902299, now seen corresponding path program 1 times [2022-07-21 08:59:59,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:59,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96823674] [2022-07-21 08:59:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:59,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:59,453 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 08:59:59,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:59,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96823674] [2022-07-21 08:59:59,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96823674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:59,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:59,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536373962] [2022-07-21 08:59:59,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:59,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:59,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:59,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:59,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:59,502 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-21 08:59:59,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 165 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 08:59:59,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:59,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-21 08:59:59,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:59,607 INFO L129 PetriNetUnfolder]: 27/458 cut-off events. [2022-07-21 08:59:59,607 INFO L130 PetriNetUnfolder]: For 44/45 co-relation queries the response was YES. [2022-07-21 08:59:59,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 458 events. 27/458 cut-off events. For 44/45 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2355 event pairs, 7 based on Foata normal form. 20/433 useless extension candidates. Maximal degree in co-relation 339. Up to 26 conditions per place. [2022-07-21 08:59:59,612 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 15 selfloop transitions, 3 changer transitions 3/164 dead transitions. [2022-07-21 08:59:59,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 164 transitions, 385 flow [2022-07-21 08:59:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2022-07-21 08:59:59,628 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9450757575757576 [2022-07-21 08:59:59,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2022-07-21 08:59:59,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2022-07-21 08:59:59,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:59,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2022-07-21 08:59:59,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 08:59:59,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 08:59:59,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 08:59:59,645 INFO L186 Difference]: Start difference. First operand has 159 places, 165 transitions, 342 flow. Second operand 3 states and 499 transitions. [2022-07-21 08:59:59,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 164 transitions, 385 flow [2022-07-21 08:59:59,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 164 transitions, 371 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:59:59,651 INFO L242 Difference]: Finished difference. Result has 159 places, 158 transitions, 344 flow [2022-07-21 08:59:59,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=159, PETRI_TRANSITIONS=158} [2022-07-21 08:59:59,654 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 0 predicate places. [2022-07-21 08:59:59,654 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 158 transitions, 344 flow [2022-07-21 08:59:59,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 08:59:59,655 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:59,655 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] [2022-07-21 08:59:59,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:59:59,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:59,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:59,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1762878269, now seen corresponding path program 1 times [2022-07-21 08:59:59,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:59,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112640376] [2022-07-21 08:59:59,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:59,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:59,832 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 08:59:59,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:59,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112640376] [2022-07-21 08:59:59,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112640376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:59,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:59,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:59:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63154349] [2022-07-21 08:59:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:59,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:59:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:59:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:59:59,838 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 08:59:59,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 158 transitions, 344 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 08:59:59,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:59,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 08:59:59,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:00,243 INFO L129 PetriNetUnfolder]: 187/880 cut-off events. [2022-07-21 09:00:00,247 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-21 09:00:00,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 880 events. 187/880 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5666 event pairs, 66 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 873. Up to 259 conditions per place. [2022-07-21 09:00:00,252 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 82 selfloop transitions, 5 changer transitions 34/247 dead transitions. [2022-07-21 09:00:00,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 247 transitions, 777 flow [2022-07-21 09:00:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3314 transitions. [2022-07-21 09:00:00,258 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7845643939393939 [2022-07-21 09:00:00,258 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3314 transitions. [2022-07-21 09:00:00,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3314 transitions. [2022-07-21 09:00:00,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:00,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3314 transitions. [2022-07-21 09:00:00,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 138.08333333333334) internal successors, (3314), 24 states have internal predecessors, (3314), 0 states have call successors, (0), 0 states 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 09:00:00,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states 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 09:00:00,272 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states 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 09:00:00,272 INFO L186 Difference]: Start difference. First operand has 159 places, 158 transitions, 344 flow. Second operand 24 states and 3314 transitions. [2022-07-21 09:00:00,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 247 transitions, 777 flow [2022-07-21 09:00:00,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 247 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:00,280 INFO L242 Difference]: Finished difference. Result has 200 places, 162 transitions, 432 flow [2022-07-21 09:00:00,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=432, PETRI_PLACES=200, PETRI_TRANSITIONS=162} [2022-07-21 09:00:00,281 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2022-07-21 09:00:00,281 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 162 transitions, 432 flow [2022-07-21 09:00:00,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:00,282 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:00,282 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] [2022-07-21 09:00:00,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:00:00,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1405916061, now seen corresponding path program 1 times [2022-07-21 09:00:00,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:00,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858063576] [2022-07-21 09:00:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:00,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:00,362 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 09:00:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:00,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858063576] [2022-07-21 09:00:00,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858063576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:00,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:00,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:00,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740637750] [2022-07-21 09:00:00,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:00,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:00,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:00,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:00,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:00,367 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-21 09:00:00,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 162 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 09:00:00,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:00,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-21 09:00:00,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:00,437 INFO L129 PetriNetUnfolder]: 39/488 cut-off events. [2022-07-21 09:00:00,437 INFO L130 PetriNetUnfolder]: For 524/541 co-relation queries the response was YES. [2022-07-21 09:00:00,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 488 events. 39/488 cut-off events. For 524/541 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2284 event pairs, 26 based on Foata normal form. 1/454 useless extension candidates. Maximal degree in co-relation 830. Up to 27 conditions per place. [2022-07-21 09:00:00,440 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 16 selfloop transitions, 5 changer transitions 0/168 dead transitions. [2022-07-21 09:00:00,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 168 transitions, 495 flow [2022-07-21 09:00:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-21 09:00:00,442 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-21 09:00:00,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-21 09:00:00,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-21 09:00:00,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:00,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-21 09:00:00,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states 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 09:00:00,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 09:00:00,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 09:00:00,445 INFO L186 Difference]: Start difference. First operand has 200 places, 162 transitions, 432 flow. Second operand 3 states and 489 transitions. [2022-07-21 09:00:00,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 168 transitions, 495 flow [2022-07-21 09:00:00,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 168 transitions, 476 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-07-21 09:00:00,450 INFO L242 Difference]: Finished difference. Result has 177 places, 165 transitions, 457 flow [2022-07-21 09:00:00,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=457, PETRI_PLACES=177, PETRI_TRANSITIONS=165} [2022-07-21 09:00:00,451 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 18 predicate places. [2022-07-21 09:00:00,451 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 165 transitions, 457 flow [2022-07-21 09:00:00,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 09:00:00,452 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:00,452 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] [2022-07-21 09:00:00,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:00:00,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:00,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1946352631, now seen corresponding path program 1 times [2022-07-21 09:00:00,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:00,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852300598] [2022-07-21 09:00:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:00,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:00,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:00,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852300598] [2022-07-21 09:00:00,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852300598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:00,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:00,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034194095] [2022-07-21 09:00:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:00,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:00,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:00,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:00,484 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-21 09:00:00,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 165 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 09:00:00,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:00,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-21 09:00:00,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:00,558 INFO L129 PetriNetUnfolder]: 63/751 cut-off events. [2022-07-21 09:00:00,558 INFO L130 PetriNetUnfolder]: For 727/768 co-relation queries the response was YES. [2022-07-21 09:00:00,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 751 events. 63/751 cut-off events. For 727/768 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4482 event pairs, 39 based on Foata normal form. 9/723 useless extension candidates. Maximal degree in co-relation 1079. Up to 58 conditions per place. [2022-07-21 09:00:00,563 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 13 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-07-21 09:00:00,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 508 flow [2022-07-21 09:00:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:00,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-21 09:00:00,565 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-21 09:00:00,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-21 09:00:00,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-21 09:00:00,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:00,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-21 09:00:00,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states 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 09:00:00,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 09:00:00,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 09:00:00,569 INFO L186 Difference]: Start difference. First operand has 177 places, 165 transitions, 457 flow. Second operand 3 states and 489 transitions. [2022-07-21 09:00:00,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 508 flow [2022-07-21 09:00:00,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 492 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:00,574 INFO L242 Difference]: Finished difference. Result has 179 places, 168 transitions, 479 flow [2022-07-21 09:00:00,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-07-21 09:00:00,576 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 20 predicate places. [2022-07-21 09:00:00,576 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 479 flow [2022-07-21 09:00:00,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 09:00:00,577 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:00,577 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] [2022-07-21 09:00:00,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:00:00,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:00,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1833288823, now seen corresponding path program 2 times [2022-07-21 09:00:00,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:00,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620167419] [2022-07-21 09:00:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:00,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:00,642 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 09:00:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:00,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620167419] [2022-07-21 09:00:00,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620167419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:00,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:00,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:00,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255243179] [2022-07-21 09:00:00,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:00,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:00,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:00,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:00,645 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-21 09:00:00,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 479 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 09:00:00,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:00,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-21 09:00:00,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:00,696 INFO L129 PetriNetUnfolder]: 38/588 cut-off events. [2022-07-21 09:00:00,697 INFO L130 PetriNetUnfolder]: For 432/445 co-relation queries the response was YES. [2022-07-21 09:00:00,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 588 events. 38/588 cut-off events. For 432/445 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3256 event pairs, 28 based on Foata normal form. 8/572 useless extension candidates. Maximal degree in co-relation 899. Up to 36 conditions per place. [2022-07-21 09:00:00,699 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 18 selfloop transitions, 3 changer transitions 2/174 dead transitions. [2022-07-21 09:00:00,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 542 flow [2022-07-21 09:00:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:00,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-21 09:00:00,701 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-21 09:00:00,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-21 09:00:00,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-21 09:00:00,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:00,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-21 09:00:00,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states 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 09:00:00,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 09:00:00,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 09:00:00,704 INFO L186 Difference]: Start difference. First operand has 179 places, 168 transitions, 479 flow. Second operand 3 states and 489 transitions. [2022-07-21 09:00:00,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 542 flow [2022-07-21 09:00:00,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 532 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:00,709 INFO L242 Difference]: Finished difference. Result has 181 places, 169 transitions, 501 flow [2022-07-21 09:00:00,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2022-07-21 09:00:00,712 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 22 predicate places. [2022-07-21 09:00:00,712 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 501 flow [2022-07-21 09:00:00,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 09:00:00,712 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:00,713 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] [2022-07-21 09:00:00,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:00:00,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:00,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1107231657, now seen corresponding path program 1 times [2022-07-21 09:00:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:00,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368189467] [2022-07-21 09:00:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:00,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:00,832 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 09:00:00,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:00,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368189467] [2022-07-21 09:00:00,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368189467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:00,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:00,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:00,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587772469] [2022-07-21 09:00:00,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:00,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:00,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:00,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:00,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:00,836 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:00,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 169 transitions, 501 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:00,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:00,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:00,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:01,092 INFO L129 PetriNetUnfolder]: 131/828 cut-off events. [2022-07-21 09:00:01,092 INFO L130 PetriNetUnfolder]: For 694/729 co-relation queries the response was YES. [2022-07-21 09:00:01,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 828 events. 131/828 cut-off events. For 694/729 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5002 event pairs, 49 based on Foata normal form. 10/805 useless extension candidates. Maximal degree in co-relation 1487. Up to 176 conditions per place. [2022-07-21 09:00:01,097 INFO L132 encePairwiseOnDemand]: 161/176 looper letters, 38 selfloop transitions, 7 changer transitions 51/226 dead transitions. [2022-07-21 09:00:01,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 226 transitions, 918 flow [2022-07-21 09:00:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:00:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 09:00:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1950 transitions. [2022-07-21 09:00:01,101 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7913961038961039 [2022-07-21 09:00:01,101 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1950 transitions. [2022-07-21 09:00:01,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1950 transitions. [2022-07-21 09:00:01,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:01,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1950 transitions. [2022-07-21 09:00:01,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 139.28571428571428) internal successors, (1950), 14 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states 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 09:00:01,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 176.0) internal successors, (2640), 15 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states 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 09:00:01,111 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 176.0) internal successors, (2640), 15 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states 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 09:00:01,112 INFO L186 Difference]: Start difference. First operand has 181 places, 169 transitions, 501 flow. Second operand 14 states and 1950 transitions. [2022-07-21 09:00:01,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 226 transitions, 918 flow [2022-07-21 09:00:01,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 226 transitions, 909 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:01,119 INFO L242 Difference]: Finished difference. Result has 202 places, 166 transitions, 546 flow [2022-07-21 09:00:01,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=546, PETRI_PLACES=202, PETRI_TRANSITIONS=166} [2022-07-21 09:00:01,121 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 43 predicate places. [2022-07-21 09:00:01,121 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 166 transitions, 546 flow [2022-07-21 09:00:01,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:01,122 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:01,122 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] [2022-07-21 09:00:01,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:00:01,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1346623849, now seen corresponding path program 1 times [2022-07-21 09:00:01,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:01,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740542107] [2022-07-21 09:00:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:01,258 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 09:00:01,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:01,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740542107] [2022-07-21 09:00:01,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740542107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:01,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:01,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:01,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956714728] [2022-07-21 09:00:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:01,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:01,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:01,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:01,266 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:01,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 166 transitions, 546 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:01,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:01,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:01,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:01,507 INFO L129 PetriNetUnfolder]: 127/800 cut-off events. [2022-07-21 09:00:01,508 INFO L130 PetriNetUnfolder]: For 2137/2157 co-relation queries the response was YES. [2022-07-21 09:00:01,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 800 events. 127/800 cut-off events. For 2137/2157 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4607 event pairs, 69 based on Foata normal form. 9/778 useless extension candidates. Maximal degree in co-relation 2211. Up to 229 conditions per place. [2022-07-21 09:00:01,513 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 14 changer transitions 25/222 dead transitions. [2022-07-21 09:00:01,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 222 transitions, 1163 flow [2022-07-21 09:00:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2212 transitions. [2022-07-21 09:00:01,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7855113636363636 [2022-07-21 09:00:01,516 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2212 transitions. [2022-07-21 09:00:01,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2212 transitions. [2022-07-21 09:00:01,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:01,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2212 transitions. [2022-07-21 09:00:01,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.25) internal successors, (2212), 16 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states 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 09:00:01,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 09:00:01,524 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 09:00:01,524 INFO L186 Difference]: Start difference. First operand has 202 places, 166 transitions, 546 flow. Second operand 16 states and 2212 transitions. [2022-07-21 09:00:01,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 222 transitions, 1163 flow [2022-07-21 09:00:01,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 222 transitions, 1000 flow, removed 76 selfloop flow, removed 10 redundant places. [2022-07-21 09:00:01,547 INFO L242 Difference]: Finished difference. Result has 208 places, 179 transitions, 674 flow [2022-07-21 09:00:01,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=674, PETRI_PLACES=208, PETRI_TRANSITIONS=179} [2022-07-21 09:00:01,548 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 49 predicate places. [2022-07-21 09:00:01,548 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 179 transitions, 674 flow [2022-07-21 09:00:01,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:01,549 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:01,549 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] [2022-07-21 09:00:01,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:00:01,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1999810905, now seen corresponding path program 2 times [2022-07-21 09:00:01,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:01,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129524558] [2022-07-21 09:00:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:01,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:01,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:01,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129524558] [2022-07-21 09:00:01,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129524558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:01,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:01,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:01,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781909132] [2022-07-21 09:00:01,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:01,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:01,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:01,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:01,630 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:01,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 179 transitions, 674 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:01,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:01,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:01,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:01,937 INFO L129 PetriNetUnfolder]: 131/786 cut-off events. [2022-07-21 09:00:01,938 INFO L130 PetriNetUnfolder]: For 1870/1890 co-relation queries the response was YES. [2022-07-21 09:00:01,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2280 conditions, 786 events. 131/786 cut-off events. For 1870/1890 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4573 event pairs, 59 based on Foata normal form. 9/769 useless extension candidates. Maximal degree in co-relation 2200. Up to 199 conditions per place. [2022-07-21 09:00:01,943 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 81 selfloop transitions, 11 changer transitions 41/262 dead transitions. [2022-07-21 09:00:01,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 262 transitions, 1489 flow [2022-07-21 09:00:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3306 transitions. [2022-07-21 09:00:01,949 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-07-21 09:00:01,949 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3306 transitions. [2022-07-21 09:00:01,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3306 transitions. [2022-07-21 09:00:01,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:01,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3306 transitions. [2022-07-21 09:00:01,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states 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 09:00:01,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states 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 09:00:01,975 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states 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 09:00:01,975 INFO L186 Difference]: Start difference. First operand has 208 places, 179 transitions, 674 flow. Second operand 24 states and 3306 transitions. [2022-07-21 09:00:01,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 262 transitions, 1489 flow [2022-07-21 09:00:01,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 262 transitions, 1351 flow, removed 68 selfloop flow, removed 9 redundant places. [2022-07-21 09:00:01,987 INFO L242 Difference]: Finished difference. Result has 236 places, 183 transitions, 741 flow [2022-07-21 09:00:01,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=741, PETRI_PLACES=236, PETRI_TRANSITIONS=183} [2022-07-21 09:00:01,989 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 77 predicate places. [2022-07-21 09:00:01,989 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 183 transitions, 741 flow [2022-07-21 09:00:01,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:01,990 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:01,990 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] [2022-07-21 09:00:01,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:00:01,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1549065623, now seen corresponding path program 3 times [2022-07-21 09:00:01,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:01,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769826791] [2022-07-21 09:00:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:02,104 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 09:00:02,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:02,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769826791] [2022-07-21 09:00:02,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769826791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:02,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:02,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:02,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273920155] [2022-07-21 09:00:02,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:02,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:02,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:02,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:02,108 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:02,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 183 transitions, 741 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:02,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:02,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:02,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:02,390 INFO L129 PetriNetUnfolder]: 148/828 cut-off events. [2022-07-21 09:00:02,391 INFO L130 PetriNetUnfolder]: For 3899/3921 co-relation queries the response was YES. [2022-07-21 09:00:02,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 828 events. 148/828 cut-off events. For 3899/3921 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4845 event pairs, 77 based on Foata normal form. 10/808 useless extension candidates. Maximal degree in co-relation 2773. Up to 251 conditions per place. [2022-07-21 09:00:02,397 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 67 selfloop transitions, 18 changer transitions 25/239 dead transitions. [2022-07-21 09:00:02,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 239 transitions, 1577 flow [2022-07-21 09:00:02,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2347 transitions. [2022-07-21 09:00:02,401 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7844251336898396 [2022-07-21 09:00:02,401 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2347 transitions. [2022-07-21 09:00:02,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2347 transitions. [2022-07-21 09:00:02,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:02,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2347 transitions. [2022-07-21 09:00:02,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.05882352941177) internal successors, (2347), 17 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states 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 09:00:02,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:02,409 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:02,410 INFO L186 Difference]: Start difference. First operand has 236 places, 183 transitions, 741 flow. Second operand 17 states and 2347 transitions. [2022-07-21 09:00:02,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 239 transitions, 1577 flow [2022-07-21 09:00:02,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 239 transitions, 1369 flow, removed 100 selfloop flow, removed 15 redundant places. [2022-07-21 09:00:02,423 INFO L242 Difference]: Finished difference. Result has 232 places, 198 transitions, 943 flow [2022-07-21 09:00:02,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=943, PETRI_PLACES=232, PETRI_TRANSITIONS=198} [2022-07-21 09:00:02,424 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2022-07-21 09:00:02,424 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 198 transitions, 943 flow [2022-07-21 09:00:02,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:02,425 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:02,425 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] [2022-07-21 09:00:02,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 09:00:02,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:02,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1771293929, now seen corresponding path program 4 times [2022-07-21 09:00:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:02,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524623818] [2022-07-21 09:00:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:02,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:02,503 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 09:00:02,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:02,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524623818] [2022-07-21 09:00:02,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524623818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:02,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:02,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:02,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686268401] [2022-07-21 09:00:02,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:02,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:02,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:02,514 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:02,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 198 transitions, 943 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:02,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:02,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:02,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:02,791 INFO L129 PetriNetUnfolder]: 155/864 cut-off events. [2022-07-21 09:00:02,791 INFO L130 PetriNetUnfolder]: For 3195/3219 co-relation queries the response was YES. [2022-07-21 09:00:02,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 864 events. 155/864 cut-off events. For 3195/3219 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5171 event pairs, 76 based on Foata normal form. 10/841 useless extension candidates. Maximal degree in co-relation 2808. Up to 235 conditions per place. [2022-07-21 09:00:02,798 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 78 selfloop transitions, 20 changer transitions 33/260 dead transitions. [2022-07-21 09:00:02,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 260 transitions, 1829 flow [2022-07-21 09:00:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2756 transitions. [2022-07-21 09:00:02,800 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7829545454545455 [2022-07-21 09:00:02,800 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2756 transitions. [2022-07-21 09:00:02,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2756 transitions. [2022-07-21 09:00:02,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:02,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2756 transitions. [2022-07-21 09:00:02,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.8) internal successors, (2756), 20 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states 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 L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 L186 Difference]: Start difference. First operand has 232 places, 198 transitions, 943 flow. Second operand 20 states and 2756 transitions. [2022-07-21 09:00:02,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 260 transitions, 1829 flow [2022-07-21 09:00:02,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 260 transitions, 1676 flow, removed 74 selfloop flow, removed 11 redundant places. [2022-07-21 09:00:02,823 INFO L242 Difference]: Finished difference. Result has 249 places, 209 transitions, 1085 flow [2022-07-21 09:00:02,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1085, PETRI_PLACES=249, PETRI_TRANSITIONS=209} [2022-07-21 09:00:02,823 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-21 09:00:02,824 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 209 transitions, 1085 flow [2022-07-21 09:00:02,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:02,824 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:02,824 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] [2022-07-21 09:00:02,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:00:02,824 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1295898935, now seen corresponding path program 5 times [2022-07-21 09:00:02,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:02,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98394803] [2022-07-21 09:00:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:02,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:02,915 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 09:00:02,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:02,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98394803] [2022-07-21 09:00:02,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98394803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:02,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:02,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935602390] [2022-07-21 09:00:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:02,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:02,917 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:02,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 209 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:02,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:02,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:02,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:03,245 INFO L129 PetriNetUnfolder]: 152/860 cut-off events. [2022-07-21 09:00:03,245 INFO L130 PetriNetUnfolder]: For 3729/3757 co-relation queries the response was YES. [2022-07-21 09:00:03,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 860 events. 152/860 cut-off events. For 3729/3757 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5187 event pairs, 66 based on Foata normal form. 9/838 useless extension candidates. Maximal degree in co-relation 2891. Up to 200 conditions per place. [2022-07-21 09:00:03,253 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 97 selfloop transitions, 25 changer transitions 42/293 dead transitions. [2022-07-21 09:00:03,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 293 transitions, 2288 flow [2022-07-21 09:00:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3304 transitions. [2022-07-21 09:00:03,257 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-21 09:00:03,257 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3304 transitions. [2022-07-21 09:00:03,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3304 transitions. [2022-07-21 09:00:03,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:03,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3304 transitions. [2022-07-21 09:00:03,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.66666666666666) internal successors, (3304), 24 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states 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 09:00:03,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states 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 09:00:03,267 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states 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 09:00:03,267 INFO L186 Difference]: Start difference. First operand has 249 places, 209 transitions, 1085 flow. Second operand 24 states and 3304 transitions. [2022-07-21 09:00:03,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 293 transitions, 2288 flow [2022-07-21 09:00:03,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 293 transitions, 2124 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-07-21 09:00:03,286 INFO L242 Difference]: Finished difference. Result has 267 places, 211 transitions, 1179 flow [2022-07-21 09:00:03,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1179, PETRI_PLACES=267, PETRI_TRANSITIONS=211} [2022-07-21 09:00:03,287 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2022-07-21 09:00:03,287 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 211 transitions, 1179 flow [2022-07-21 09:00:03,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:03,288 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:03,288 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] [2022-07-21 09:00:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 09:00:03,289 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1308926351, now seen corresponding path program 6 times [2022-07-21 09:00:03,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:03,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910887195] [2022-07-21 09:00:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:03,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:03,382 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 09:00:03,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:03,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910887195] [2022-07-21 09:00:03,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910887195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:03,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:03,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:03,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047665658] [2022-07-21 09:00:03,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:03,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:03,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:03,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:03,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:03,386 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:03,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 211 transitions, 1179 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:03,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:03,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:03,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:03,756 INFO L129 PetriNetUnfolder]: 169/957 cut-off events. [2022-07-21 09:00:03,756 INFO L130 PetriNetUnfolder]: For 4574/4598 co-relation queries the response was YES. [2022-07-21 09:00:03,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 957 events. 169/957 cut-off events. For 4574/4598 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6144 event pairs, 71 based on Foata normal form. 10/938 useless extension candidates. Maximal degree in co-relation 3364. Up to 268 conditions per place. [2022-07-21 09:00:03,765 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 87 selfloop transitions, 27 changer transitions 32/275 dead transitions. [2022-07-21 09:00:03,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 275 transitions, 2245 flow [2022-07-21 09:00:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3022 transitions. [2022-07-21 09:00:03,769 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7804752066115702 [2022-07-21 09:00:03,769 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3022 transitions. [2022-07-21 09:00:03,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3022 transitions. [2022-07-21 09:00:03,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:03,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3022 transitions. [2022-07-21 09:00:03,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.36363636363637) internal successors, (3022), 22 states have internal predecessors, (3022), 0 states have call successors, (0), 0 states 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 09:00:03,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 09:00:03,776 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 09:00:03,777 INFO L186 Difference]: Start difference. First operand has 267 places, 211 transitions, 1179 flow. Second operand 22 states and 3022 transitions. [2022-07-21 09:00:03,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 275 transitions, 2245 flow [2022-07-21 09:00:03,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 275 transitions, 2146 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-21 09:00:03,795 INFO L242 Difference]: Finished difference. Result has 269 places, 222 transitions, 1388 flow [2022-07-21 09:00:03,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1388, PETRI_PLACES=269, PETRI_TRANSITIONS=222} [2022-07-21 09:00:03,796 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-21 09:00:03,796 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 222 transitions, 1388 flow [2022-07-21 09:00:03,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:03,796 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:03,796 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] [2022-07-21 09:00:03,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 09:00:03,797 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1877607927, now seen corresponding path program 7 times [2022-07-21 09:00:03,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:03,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206841605] [2022-07-21 09:00:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:03,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:03,883 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 09:00:03,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:03,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206841605] [2022-07-21 09:00:03,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206841605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:03,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:03,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096158173] [2022-07-21 09:00:03,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:03,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:03,886 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:03,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 222 transitions, 1388 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:03,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:03,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:03,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:04,238 INFO L129 PetriNetUnfolder]: 165/952 cut-off events. [2022-07-21 09:00:04,238 INFO L130 PetriNetUnfolder]: For 5427/5454 co-relation queries the response was YES. [2022-07-21 09:00:04,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 952 events. 165/952 cut-off events. For 5427/5454 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6132 event pairs, 75 based on Foata normal form. 9/932 useless extension candidates. Maximal degree in co-relation 3478. Up to 261 conditions per place. [2022-07-21 09:00:04,248 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 87 selfloop transitions, 28 changer transitions 33/277 dead transitions. [2022-07-21 09:00:04,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 277 transitions, 2436 flow [2022-07-21 09:00:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2891 transitions. [2022-07-21 09:00:04,250 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-21 09:00:04,251 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2891 transitions. [2022-07-21 09:00:04,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2891 transitions. [2022-07-21 09:00:04,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:04,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2891 transitions. [2022-07-21 09:00:04,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.66666666666666) internal successors, (2891), 21 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states 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 09:00:04,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 09:00:04,258 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 09:00:04,258 INFO L186 Difference]: Start difference. First operand has 269 places, 222 transitions, 1388 flow. Second operand 21 states and 2891 transitions. [2022-07-21 09:00:04,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 277 transitions, 2436 flow [2022-07-21 09:00:04,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 277 transitions, 2306 flow, removed 58 selfloop flow, removed 11 redundant places. [2022-07-21 09:00:04,279 INFO L242 Difference]: Finished difference. Result has 280 places, 228 transitions, 1563 flow [2022-07-21 09:00:04,279 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1563, PETRI_PLACES=280, PETRI_TRANSITIONS=228} [2022-07-21 09:00:04,280 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-07-21 09:00:04,280 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 228 transitions, 1563 flow [2022-07-21 09:00:04,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:04,280 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:04,281 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] [2022-07-21 09:00:04,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 09:00:04,281 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:04,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:04,281 INFO L85 PathProgramCache]: Analyzing trace with hash -6717397, now seen corresponding path program 8 times [2022-07-21 09:00:04,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:04,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493680801] [2022-07-21 09:00:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:04,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:04,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:04,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493680801] [2022-07-21 09:00:04,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493680801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:04,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:04,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:04,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421988441] [2022-07-21 09:00:04,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:04,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:04,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:04,366 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:04,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 228 transitions, 1563 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:04,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:04,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:04,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:04,676 INFO L129 PetriNetUnfolder]: 152/922 cut-off events. [2022-07-21 09:00:04,676 INFO L130 PetriNetUnfolder]: For 5277/5302 co-relation queries the response was YES. [2022-07-21 09:00:04,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 922 events. 152/922 cut-off events. For 5277/5302 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5797 event pairs, 67 based on Foata normal form. 11/905 useless extension candidates. Maximal degree in co-relation 3340. Up to 271 conditions per place. [2022-07-21 09:00:04,687 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 86 selfloop transitions, 32 changer transitions 27/274 dead transitions. [2022-07-21 09:00:04,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 274 transitions, 2486 flow [2022-07-21 09:00:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2478 transitions. [2022-07-21 09:00:04,689 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-21 09:00:04,689 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2478 transitions. [2022-07-21 09:00:04,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2478 transitions. [2022-07-21 09:00:04,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:04,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2478 transitions. [2022-07-21 09:00:04,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.66666666666666) internal successors, (2478), 18 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 09:00:04,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:04,696 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:04,696 INFO L186 Difference]: Start difference. First operand has 280 places, 228 transitions, 1563 flow. Second operand 18 states and 2478 transitions. [2022-07-21 09:00:04,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 274 transitions, 2486 flow [2022-07-21 09:00:04,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 274 transitions, 2311 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-07-21 09:00:04,724 INFO L242 Difference]: Finished difference. Result has 279 places, 235 transitions, 1685 flow [2022-07-21 09:00:04,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1685, PETRI_PLACES=279, PETRI_TRANSITIONS=235} [2022-07-21 09:00:04,724 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 120 predicate places. [2022-07-21 09:00:04,725 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 235 transitions, 1685 flow [2022-07-21 09:00:04,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:04,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:04,725 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] [2022-07-21 09:00:04,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 09:00:04,725 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1255932177, now seen corresponding path program 9 times [2022-07-21 09:00:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:04,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939202447] [2022-07-21 09:00:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:04,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:04,815 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 09:00:04,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:04,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939202447] [2022-07-21 09:00:04,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939202447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:04,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:04,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:04,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145659084] [2022-07-21 09:00:04,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:04,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:04,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:04,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:04,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:04,817 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:04,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 235 transitions, 1685 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:04,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:04,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:04,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:05,148 INFO L129 PetriNetUnfolder]: 149/917 cut-off events. [2022-07-21 09:00:05,148 INFO L130 PetriNetUnfolder]: For 4834/4870 co-relation queries the response was YES. [2022-07-21 09:00:05,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 917 events. 149/917 cut-off events. For 4834/4870 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5810 event pairs, 70 based on Foata normal form. 12/899 useless extension candidates. Maximal degree in co-relation 3270. Up to 272 conditions per place. [2022-07-21 09:00:05,157 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 85 selfloop transitions, 33 changer transitions 33/280 dead transitions. [2022-07-21 09:00:05,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 280 transitions, 2600 flow [2022-07-21 09:00:05,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2751 transitions. [2022-07-21 09:00:05,160 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7815340909090909 [2022-07-21 09:00:05,160 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2751 transitions. [2022-07-21 09:00:05,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2751 transitions. [2022-07-21 09:00:05,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:05,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2751 transitions. [2022-07-21 09:00:05,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.55) internal successors, (2751), 20 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states 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 09:00:05,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 09:00:05,166 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 09:00:05,166 INFO L186 Difference]: Start difference. First operand has 279 places, 235 transitions, 1685 flow. Second operand 20 states and 2751 transitions. [2022-07-21 09:00:05,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 280 transitions, 2600 flow [2022-07-21 09:00:05,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 280 transitions, 2470 flow, removed 37 selfloop flow, removed 10 redundant places. [2022-07-21 09:00:05,187 INFO L242 Difference]: Finished difference. Result has 292 places, 238 transitions, 1765 flow [2022-07-21 09:00:05,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1765, PETRI_PLACES=292, PETRI_TRANSITIONS=238} [2022-07-21 09:00:05,189 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-21 09:00:05,189 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 238 transitions, 1765 flow [2022-07-21 09:00:05,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:05,190 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:05,190 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] [2022-07-21 09:00:05,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 09:00:05,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:05,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:05,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1455674899, now seen corresponding path program 10 times [2022-07-21 09:00:05,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:05,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773840483] [2022-07-21 09:00:05,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:05,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:05,266 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 09:00:05,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:05,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773840483] [2022-07-21 09:00:05,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773840483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:05,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:05,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:05,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034322037] [2022-07-21 09:00:05,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:05,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:05,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:05,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:05,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:05,269 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:05,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 238 transitions, 1765 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:05,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:05,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:05,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:05,555 INFO L129 PetriNetUnfolder]: 133/862 cut-off events. [2022-07-21 09:00:05,556 INFO L130 PetriNetUnfolder]: For 4303/4328 co-relation queries the response was YES. [2022-07-21 09:00:05,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 862 events. 133/862 cut-off events. For 4303/4328 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5267 event pairs, 63 based on Foata normal form. 11/845 useless extension candidates. Maximal degree in co-relation 3006. Up to 259 conditions per place. [2022-07-21 09:00:05,563 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 82 selfloop transitions, 21 changer transitions 31/263 dead transitions. [2022-07-21 09:00:05,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 263 transitions, 2299 flow [2022-07-21 09:00:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2201 transitions. [2022-07-21 09:00:05,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7816051136363636 [2022-07-21 09:00:05,568 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2201 transitions. [2022-07-21 09:00:05,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2201 transitions. [2022-07-21 09:00:05,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:05,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2201 transitions. [2022-07-21 09:00:05,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.5625) internal successors, (2201), 16 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states 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 09:00:05,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 09:00:05,573 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 09:00:05,573 INFO L186 Difference]: Start difference. First operand has 292 places, 238 transitions, 1765 flow. Second operand 16 states and 2201 transitions. [2022-07-21 09:00:05,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 263 transitions, 2299 flow [2022-07-21 09:00:05,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 263 transitions, 2194 flow, removed 31 selfloop flow, removed 12 redundant places. [2022-07-21 09:00:05,597 INFO L242 Difference]: Finished difference. Result has 288 places, 222 transitions, 1469 flow [2022-07-21 09:00:05,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1469, PETRI_PLACES=288, PETRI_TRANSITIONS=222} [2022-07-21 09:00:05,597 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 129 predicate places. [2022-07-21 09:00:05,599 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 222 transitions, 1469 flow [2022-07-21 09:00:05,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:05,599 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:05,600 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] [2022-07-21 09:00:05,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 09:00:05,600 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:05,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1878967331, now seen corresponding path program 11 times [2022-07-21 09:00:05,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:05,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793480970] [2022-07-21 09:00:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:05,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:05,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793480970] [2022-07-21 09:00:05,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793480970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:05,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:05,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:05,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90760678] [2022-07-21 09:00:05,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:05,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:05,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:05,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:05,699 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:05,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 222 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:05,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:05,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:05,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:06,001 INFO L129 PetriNetUnfolder]: 130/845 cut-off events. [2022-07-21 09:00:06,001 INFO L130 PetriNetUnfolder]: For 4148/4180 co-relation queries the response was YES. [2022-07-21 09:00:06,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 845 events. 130/845 cut-off events. For 4148/4180 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5084 event pairs, 65 based on Foata normal form. 11/827 useless extension candidates. Maximal degree in co-relation 2945. Up to 252 conditions per place. [2022-07-21 09:00:06,010 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 25 changer transitions 30/260 dead transitions. [2022-07-21 09:00:06,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 260 transitions, 2232 flow [2022-07-21 09:00:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2481 transitions. [2022-07-21 09:00:06,013 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7831439393939394 [2022-07-21 09:00:06,013 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2481 transitions. [2022-07-21 09:00:06,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2481 transitions. [2022-07-21 09:00:06,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:06,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2481 transitions. [2022-07-21 09:00:06,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.83333333333334) internal successors, (2481), 18 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states 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 09:00:06,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:06,020 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:06,021 INFO L186 Difference]: Start difference. First operand has 288 places, 222 transitions, 1469 flow. Second operand 18 states and 2481 transitions. [2022-07-21 09:00:06,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 260 transitions, 2232 flow [2022-07-21 09:00:06,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 260 transitions, 2116 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-07-21 09:00:06,039 INFO L242 Difference]: Finished difference. Result has 278 places, 224 transitions, 1512 flow [2022-07-21 09:00:06,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1512, PETRI_PLACES=278, PETRI_TRANSITIONS=224} [2022-07-21 09:00:06,040 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2022-07-21 09:00:06,040 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 224 transitions, 1512 flow [2022-07-21 09:00:06,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:06,041 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:06,041 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:06,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 09:00:06,042 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:06,042 INFO L85 PathProgramCache]: Analyzing trace with hash 279000489, now seen corresponding path program 12 times [2022-07-21 09:00:06,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:06,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444461529] [2022-07-21 09:00:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:06,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:06,125 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 09:00:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:06,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444461529] [2022-07-21 09:00:06,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444461529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:06,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:06,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:06,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409871953] [2022-07-21 09:00:06,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:06,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:06,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:06,129 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:06,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 224 transitions, 1512 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:06,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:06,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:06,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:06,399 INFO L129 PetriNetUnfolder]: 122/823 cut-off events. [2022-07-21 09:00:06,399 INFO L130 PetriNetUnfolder]: For 3531/3554 co-relation queries the response was YES. [2022-07-21 09:00:06,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 823 events. 122/823 cut-off events. For 3531/3554 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4912 event pairs, 67 based on Foata normal form. 9/802 useless extension candidates. Maximal degree in co-relation 2757. Up to 249 conditions per place. [2022-07-21 09:00:06,405 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 74 selfloop transitions, 16 changer transitions 30/249 dead transitions. [2022-07-21 09:00:06,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 249 transitions, 2027 flow [2022-07-21 09:00:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2340 transitions. [2022-07-21 09:00:06,407 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7820855614973262 [2022-07-21 09:00:06,408 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2340 transitions. [2022-07-21 09:00:06,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2340 transitions. [2022-07-21 09:00:06,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:06,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2340 transitions. [2022-07-21 09:00:06,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states 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 09:00:06,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:06,413 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:06,413 INFO L186 Difference]: Start difference. First operand has 278 places, 224 transitions, 1512 flow. Second operand 17 states and 2340 transitions. [2022-07-21 09:00:06,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 249 transitions, 2027 flow [2022-07-21 09:00:06,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 249 transitions, 1908 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-07-21 09:00:06,429 INFO L242 Difference]: Finished difference. Result has 284 places, 215 transitions, 1318 flow [2022-07-21 09:00:06,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1318, PETRI_PLACES=284, PETRI_TRANSITIONS=215} [2022-07-21 09:00:06,430 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 125 predicate places. [2022-07-21 09:00:06,430 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 215 transitions, 1318 flow [2022-07-21 09:00:06,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:06,430 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:06,430 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] [2022-07-21 09:00:06,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 09:00:06,431 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash -156541461, now seen corresponding path program 13 times [2022-07-21 09:00:06,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:06,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092329417] [2022-07-21 09:00:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:06,515 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 09:00:06,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:06,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092329417] [2022-07-21 09:00:06,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092329417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:06,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:06,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:06,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9625838] [2022-07-21 09:00:06,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:06,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:06,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:06,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:06,519 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:06,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 215 transitions, 1318 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:06,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:06,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:06,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:06,768 INFO L129 PetriNetUnfolder]: 109/760 cut-off events. [2022-07-21 09:00:06,768 INFO L130 PetriNetUnfolder]: For 2786/2809 co-relation queries the response was YES. [2022-07-21 09:00:06,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 760 events. 109/760 cut-off events. For 2786/2809 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4356 event pairs, 62 based on Foata normal form. 9/741 useless extension candidates. Maximal degree in co-relation 2409. Up to 237 conditions per place. [2022-07-21 09:00:06,774 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 64 selfloop transitions, 5 changer transitions 33/231 dead transitions. [2022-07-21 09:00:06,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 231 transitions, 1643 flow [2022-07-21 09:00:06,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2022-07-21 09:00:06,778 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780934343434344 [2022-07-21 09:00:06,778 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2465 transitions. [2022-07-21 09:00:06,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2465 transitions. [2022-07-21 09:00:06,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:06,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2465 transitions. [2022-07-21 09:00:06,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.94444444444446) internal successors, (2465), 18 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states 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 09:00:06,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:06,784 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:06,785 INFO L186 Difference]: Start difference. First operand has 284 places, 215 transitions, 1318 flow. Second operand 18 states and 2465 transitions. [2022-07-21 09:00:06,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 231 transitions, 1643 flow [2022-07-21 09:00:06,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 231 transitions, 1529 flow, removed 16 selfloop flow, removed 20 redundant places. [2022-07-21 09:00:06,800 INFO L242 Difference]: Finished difference. Result has 270 places, 195 transitions, 962 flow [2022-07-21 09:00:06,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=962, PETRI_PLACES=270, PETRI_TRANSITIONS=195} [2022-07-21 09:00:06,800 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-21 09:00:06,800 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 195 transitions, 962 flow [2022-07-21 09:00:06,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:06,801 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:06,801 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] [2022-07-21 09:00:06,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 09:00:06,801 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:06,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1718238291, now seen corresponding path program 14 times [2022-07-21 09:00:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:06,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604090561] [2022-07-21 09:00:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:06,872 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 09:00:06,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:06,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604090561] [2022-07-21 09:00:06,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604090561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:06,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:06,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:06,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171593691] [2022-07-21 09:00:06,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:06,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:06,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:06,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:06,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 195 transitions, 962 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:06,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:06,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:06,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:07,250 INFO L129 PetriNetUnfolder]: 113/780 cut-off events. [2022-07-21 09:00:07,250 INFO L130 PetriNetUnfolder]: For 2591/2611 co-relation queries the response was YES. [2022-07-21 09:00:07,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 780 events. 113/780 cut-off events. For 2591/2611 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4553 event pairs, 60 based on Foata normal form. 9/762 useless extension candidates. Maximal degree in co-relation 2424. Up to 212 conditions per place. [2022-07-21 09:00:07,257 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 22 changer transitions 34/244 dead transitions. [2022-07-21 09:00:07,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 244 transitions, 1745 flow [2022-07-21 09:00:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3017 transitions. [2022-07-21 09:00:07,260 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7791838842975206 [2022-07-21 09:00:07,260 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3017 transitions. [2022-07-21 09:00:07,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3017 transitions. [2022-07-21 09:00:07,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:07,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3017 transitions. [2022-07-21 09:00:07,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.13636363636363) internal successors, (3017), 22 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states 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 09:00:07,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 09:00:07,267 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 09:00:07,271 INFO L186 Difference]: Start difference. First operand has 270 places, 195 transitions, 962 flow. Second operand 22 states and 3017 transitions. [2022-07-21 09:00:07,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 244 transitions, 1745 flow [2022-07-21 09:00:07,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 244 transitions, 1589 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-21 09:00:07,282 INFO L242 Difference]: Finished difference. Result has 258 places, 200 transitions, 1043 flow [2022-07-21 09:00:07,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1043, PETRI_PLACES=258, PETRI_TRANSITIONS=200} [2022-07-21 09:00:07,283 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-21 09:00:07,283 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 200 transitions, 1043 flow [2022-07-21 09:00:07,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:07,283 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:07,283 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] [2022-07-21 09:00:07,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 09:00:07,284 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:07,284 INFO L85 PathProgramCache]: Analyzing trace with hash -60478949, now seen corresponding path program 15 times [2022-07-21 09:00:07,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:07,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952696485] [2022-07-21 09:00:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:07,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:07,385 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 09:00:07,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:07,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952696485] [2022-07-21 09:00:07,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952696485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:07,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:07,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029031311] [2022-07-21 09:00:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:07,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:07,387 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:07,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 200 transitions, 1043 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:07,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:07,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:07,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:07,653 INFO L129 PetriNetUnfolder]: 114/791 cut-off events. [2022-07-21 09:00:07,653 INFO L130 PetriNetUnfolder]: For 2859/2879 co-relation queries the response was YES. [2022-07-21 09:00:07,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 791 events. 114/791 cut-off events. For 2859/2879 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4699 event pairs, 57 based on Foata normal form. 9/774 useless extension candidates. Maximal degree in co-relation 2504. Up to 218 conditions per place. [2022-07-21 09:00:07,663 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 60 selfloop transitions, 27 changer transitions 27/243 dead transitions. [2022-07-21 09:00:07,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 243 transitions, 1780 flow [2022-07-21 09:00:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2342 transitions. [2022-07-21 09:00:07,665 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7827540106951871 [2022-07-21 09:00:07,665 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2342 transitions. [2022-07-21 09:00:07,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2342 transitions. [2022-07-21 09:00:07,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:07,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2342 transitions. [2022-07-21 09:00:07,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.76470588235293) internal successors, (2342), 17 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states 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 09:00:07,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:07,671 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:07,671 INFO L186 Difference]: Start difference. First operand has 258 places, 200 transitions, 1043 flow. Second operand 17 states and 2342 transitions. [2022-07-21 09:00:07,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 243 transitions, 1780 flow [2022-07-21 09:00:07,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 243 transitions, 1688 flow, removed 33 selfloop flow, removed 13 redundant places. [2022-07-21 09:00:07,684 INFO L242 Difference]: Finished difference. Result has 257 places, 208 transitions, 1208 flow [2022-07-21 09:00:07,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1208, PETRI_PLACES=257, PETRI_TRANSITIONS=208} [2022-07-21 09:00:07,685 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2022-07-21 09:00:07,685 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 208 transitions, 1208 flow [2022-07-21 09:00:07,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:07,685 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:07,685 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] [2022-07-21 09:00:07,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 09:00:07,686 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:07,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:07,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1771188031, now seen corresponding path program 16 times [2022-07-21 09:00:07,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:07,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294568129] [2022-07-21 09:00:07,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:07,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:07,765 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 09:00:07,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:07,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294568129] [2022-07-21 09:00:07,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294568129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:07,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:07,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:07,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838402974] [2022-07-21 09:00:07,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:07,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:07,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:07,767 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:07,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 208 transitions, 1208 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:07,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:07,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:07,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:08,051 INFO L129 PetriNetUnfolder]: 103/750 cut-off events. [2022-07-21 09:00:08,051 INFO L130 PetriNetUnfolder]: For 2379/2399 co-relation queries the response was YES. [2022-07-21 09:00:08,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 750 events. 103/750 cut-off events. For 2379/2399 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4334 event pairs, 59 based on Foata normal form. 9/732 useless extension candidates. Maximal degree in co-relation 2316. Up to 213 conditions per place. [2022-07-21 09:00:08,056 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 57 selfloop transitions, 13 changer transitions 33/232 dead transitions. [2022-07-21 09:00:08,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 232 transitions, 1628 flow [2022-07-21 09:00:08,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2022-07-21 09:00:08,064 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2022-07-21 09:00:08,064 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2022-07-21 09:00:08,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2022-07-21 09:00:08,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:08,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2022-07-21 09:00:08,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states 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 09:00:08,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:08,070 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:08,070 INFO L186 Difference]: Start difference. First operand has 257 places, 208 transitions, 1208 flow. Second operand 18 states and 2471 transitions. [2022-07-21 09:00:08,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 232 transitions, 1628 flow [2022-07-21 09:00:08,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 232 transitions, 1518 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-07-21 09:00:08,084 INFO L242 Difference]: Finished difference. Result has 264 places, 193 transitions, 948 flow [2022-07-21 09:00:08,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=948, PETRI_PLACES=264, PETRI_TRANSITIONS=193} [2022-07-21 09:00:08,085 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 105 predicate places. [2022-07-21 09:00:08,085 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 193 transitions, 948 flow [2022-07-21 09:00:08,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:08,085 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:08,085 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] [2022-07-21 09:00:08,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 09:00:08,085 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:08,086 INFO L85 PathProgramCache]: Analyzing trace with hash -603979919, now seen corresponding path program 17 times [2022-07-21 09:00:08,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:08,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923985445] [2022-07-21 09:00:08,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:08,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:08,173 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 09:00:08,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:08,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923985445] [2022-07-21 09:00:08,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923985445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:08,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:08,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:08,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108224767] [2022-07-21 09:00:08,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:08,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:08,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:08,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:08,177 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:08,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 193 transitions, 948 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:08,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:08,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:08,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:08,446 INFO L129 PetriNetUnfolder]: 102/742 cut-off events. [2022-07-21 09:00:08,446 INFO L130 PetriNetUnfolder]: For 2666/2686 co-relation queries the response was YES. [2022-07-21 09:00:08,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 742 events. 102/742 cut-off events. For 2666/2686 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4282 event pairs, 57 based on Foata normal form. 9/725 useless extension candidates. Maximal degree in co-relation 2297. Up to 204 conditions per place. [2022-07-21 09:00:08,452 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 53 selfloop transitions, 19 changer transitions 34/235 dead transitions. [2022-07-21 09:00:08,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 235 transitions, 1724 flow [2022-07-21 09:00:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2880 transitions. [2022-07-21 09:00:08,454 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7792207792207793 [2022-07-21 09:00:08,455 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2880 transitions. [2022-07-21 09:00:08,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2880 transitions. [2022-07-21 09:00:08,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:08,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2880 transitions. [2022-07-21 09:00:08,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.14285714285714) internal successors, (2880), 21 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states 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 09:00:08,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 09:00:08,461 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 09:00:08,461 INFO L186 Difference]: Start difference. First operand has 264 places, 193 transitions, 948 flow. Second operand 21 states and 2880 transitions. [2022-07-21 09:00:08,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 235 transitions, 1724 flow [2022-07-21 09:00:08,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 235 transitions, 1558 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-21 09:00:08,473 INFO L242 Difference]: Finished difference. Result has 256 places, 196 transitions, 1015 flow [2022-07-21 09:00:08,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1015, PETRI_PLACES=256, PETRI_TRANSITIONS=196} [2022-07-21 09:00:08,474 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 97 predicate places. [2022-07-21 09:00:08,474 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 196 transitions, 1015 flow [2022-07-21 09:00:08,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:08,474 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:08,474 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] [2022-07-21 09:00:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 09:00:08,475 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1772295727, now seen corresponding path program 18 times [2022-07-21 09:00:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:08,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761659802] [2022-07-21 09:00:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:08,549 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 09:00:08,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:08,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761659802] [2022-07-21 09:00:08,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761659802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:08,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:08,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:08,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356020] [2022-07-21 09:00:08,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:08,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:08,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:08,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:08,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:08,552 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:08,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 196 transitions, 1015 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:08,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:08,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:08,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:08,821 INFO L129 PetriNetUnfolder]: 96/717 cut-off events. [2022-07-21 09:00:08,821 INFO L130 PetriNetUnfolder]: For 2281/2301 co-relation queries the response was YES. [2022-07-21 09:00:08,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 717 events. 96/717 cut-off events. For 2281/2301 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4060 event pairs, 59 based on Foata normal form. 9/700 useless extension candidates. Maximal degree in co-relation 2171. Up to 208 conditions per place. [2022-07-21 09:00:08,828 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 49 selfloop transitions, 21 changer transitions 30/229 dead transitions. [2022-07-21 09:00:08,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 229 transitions, 1631 flow [2022-07-21 09:00:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2475 transitions. [2022-07-21 09:00:08,831 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-07-21 09:00:08,843 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2475 transitions. [2022-07-21 09:00:08,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2475 transitions. [2022-07-21 09:00:08,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:08,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2475 transitions. [2022-07-21 09:00:08,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states 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 09:00:08,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:08,850 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:08,851 INFO L186 Difference]: Start difference. First operand has 256 places, 196 transitions, 1015 flow. Second operand 18 states and 2475 transitions. [2022-07-21 09:00:08,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 229 transitions, 1631 flow [2022-07-21 09:00:08,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 229 transitions, 1476 flow, removed 59 selfloop flow, removed 15 redundant places. [2022-07-21 09:00:08,863 INFO L242 Difference]: Finished difference. Result has 250 places, 197 transitions, 1033 flow [2022-07-21 09:00:08,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1033, PETRI_PLACES=250, PETRI_TRANSITIONS=197} [2022-07-21 09:00:08,863 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 91 predicate places. [2022-07-21 09:00:08,863 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 197 transitions, 1033 flow [2022-07-21 09:00:08,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:08,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:08,864 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] [2022-07-21 09:00:08,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 09:00:08,864 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:08,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:08,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1691963201, now seen corresponding path program 19 times [2022-07-21 09:00:08,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:08,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634714855] [2022-07-21 09:00:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:08,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:08,943 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 09:00:08,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:08,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634714855] [2022-07-21 09:00:08,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634714855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:08,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:08,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:08,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749431258] [2022-07-21 09:00:08,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:08,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:08,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:08,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:08,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:08,946 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:08,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 197 transitions, 1033 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:08,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:08,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:08,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:09,187 INFO L129 PetriNetUnfolder]: 93/706 cut-off events. [2022-07-21 09:00:09,187 INFO L130 PetriNetUnfolder]: For 1769/1789 co-relation queries the response was YES. [2022-07-21 09:00:09,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 706 events. 93/706 cut-off events. For 1769/1789 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3921 event pairs, 57 based on Foata normal form. 9/690 useless extension candidates. Maximal degree in co-relation 2028. Up to 207 conditions per place. [2022-07-21 09:00:09,191 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 12 changer transitions 33/222 dead transitions. [2022-07-21 09:00:09,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 222 transitions, 1422 flow [2022-07-21 09:00:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2338 transitions. [2022-07-21 09:00:09,193 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7814171122994652 [2022-07-21 09:00:09,194 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2338 transitions. [2022-07-21 09:00:09,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2338 transitions. [2022-07-21 09:00:09,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:09,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2338 transitions. [2022-07-21 09:00:09,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.52941176470588) internal successors, (2338), 17 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states 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 09:00:09,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:09,198 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:09,198 INFO L186 Difference]: Start difference. First operand has 250 places, 197 transitions, 1033 flow. Second operand 17 states and 2338 transitions. [2022-07-21 09:00:09,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 222 transitions, 1422 flow [2022-07-21 09:00:09,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 222 transitions, 1270 flow, removed 43 selfloop flow, removed 11 redundant places. [2022-07-21 09:00:09,206 INFO L242 Difference]: Finished difference. Result has 253 places, 188 transitions, 836 flow [2022-07-21 09:00:09,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=836, PETRI_PLACES=253, PETRI_TRANSITIONS=188} [2022-07-21 09:00:09,206 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-07-21 09:00:09,206 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 188 transitions, 836 flow [2022-07-21 09:00:09,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:09,207 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:09,207 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] [2022-07-21 09:00:09,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 09:00:09,207 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:09,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1710327599, now seen corresponding path program 20 times [2022-07-21 09:00:09,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:09,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354222570] [2022-07-21 09:00:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:09,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:09,273 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 09:00:09,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354222570] [2022-07-21 09:00:09,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354222570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:09,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:09,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316145800] [2022-07-21 09:00:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:09,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:09,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:09,276 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:09,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 188 transitions, 836 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:09,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:09,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:09,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:09,529 INFO L129 PetriNetUnfolder]: 79/619 cut-off events. [2022-07-21 09:00:09,529 INFO L130 PetriNetUnfolder]: For 1178/1198 co-relation queries the response was YES. [2022-07-21 09:00:09,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 619 events. 79/619 cut-off events. For 1178/1198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3239 event pairs, 54 based on Foata normal form. 9/603 useless extension candidates. Maximal degree in co-relation 1637. Up to 187 conditions per place. [2022-07-21 09:00:09,534 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 34 selfloop transitions, 0 changer transitions 45/202 dead transitions. [2022-07-21 09:00:09,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 202 transitions, 1041 flow [2022-07-21 09:00:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2462 transitions. [2022-07-21 09:00:09,536 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7771464646464646 [2022-07-21 09:00:09,536 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2462 transitions. [2022-07-21 09:00:09,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2462 transitions. [2022-07-21 09:00:09,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:09,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2462 transitions. [2022-07-21 09:00:09,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.77777777777777) internal successors, (2462), 18 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states 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 09:00:09,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:09,541 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:09,541 INFO L186 Difference]: Start difference. First operand has 253 places, 188 transitions, 836 flow. Second operand 18 states and 2462 transitions. [2022-07-21 09:00:09,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 202 transitions, 1041 flow [2022-07-21 09:00:09,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 202 transitions, 955 flow, removed 18 selfloop flow, removed 18 redundant places. [2022-07-21 09:00:09,550 INFO L242 Difference]: Finished difference. Result has 239 places, 157 transitions, 486 flow [2022-07-21 09:00:09,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=486, PETRI_PLACES=239, PETRI_TRANSITIONS=157} [2022-07-21 09:00:09,552 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 80 predicate places. [2022-07-21 09:00:09,552 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 157 transitions, 486 flow [2022-07-21 09:00:09,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:09,552 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:09,552 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] [2022-07-21 09:00:09,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 09:00:09,553 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1228416663, now seen corresponding path program 2 times [2022-07-21 09:00:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:09,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74265077] [2022-07-21 09:00:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:09,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:09,642 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 09:00:09,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:09,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74265077] [2022-07-21 09:00:09,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74265077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:09,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:09,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:09,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371568305] [2022-07-21 09:00:09,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:09,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:09,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:09,644 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:09,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 157 transitions, 486 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:09,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:09,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:09,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:09,867 INFO L129 PetriNetUnfolder]: 90/605 cut-off events. [2022-07-21 09:00:09,867 INFO L130 PetriNetUnfolder]: For 942/947 co-relation queries the response was YES. [2022-07-21 09:00:09,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 605 events. 90/605 cut-off events. For 942/947 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2986 event pairs, 40 based on Foata normal form. 1/584 useless extension candidates. Maximal degree in co-relation 1514. Up to 142 conditions per place. [2022-07-21 09:00:09,870 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 14 changer transitions 22/208 dead transitions. [2022-07-21 09:00:09,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 208 transitions, 1007 flow [2022-07-21 09:00:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2206 transitions. [2022-07-21 09:00:09,873 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7833806818181818 [2022-07-21 09:00:09,873 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2206 transitions. [2022-07-21 09:00:09,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2206 transitions. [2022-07-21 09:00:09,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:09,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2206 transitions. [2022-07-21 09:00:09,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.875) internal successors, (2206), 16 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states 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 09:00:09,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 09:00:09,885 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 09:00:09,885 INFO L186 Difference]: Start difference. First operand has 239 places, 157 transitions, 486 flow. Second operand 16 states and 2206 transitions. [2022-07-21 09:00:09,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 208 transitions, 1007 flow [2022-07-21 09:00:09,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 208 transitions, 951 flow, removed 27 selfloop flow, removed 10 redundant places. [2022-07-21 09:00:09,891 INFO L242 Difference]: Finished difference. Result has 216 places, 169 transitions, 635 flow [2022-07-21 09:00:09,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=635, PETRI_PLACES=216, PETRI_TRANSITIONS=169} [2022-07-21 09:00:09,892 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 57 predicate places. [2022-07-21 09:00:09,892 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 169 transitions, 635 flow [2022-07-21 09:00:09,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:09,892 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:09,893 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] [2022-07-21 09:00:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 09:00:09,893 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:09,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash 737561389, now seen corresponding path program 3 times [2022-07-21 09:00:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:09,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077429702] [2022-07-21 09:00:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:09,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:09,963 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 09:00:09,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:09,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077429702] [2022-07-21 09:00:09,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077429702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:09,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:09,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:09,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314553079] [2022-07-21 09:00:09,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:09,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:09,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:09,965 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:09,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 169 transitions, 635 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:09,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:09,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:09,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:10,228 INFO L129 PetriNetUnfolder]: 93/609 cut-off events. [2022-07-21 09:00:10,228 INFO L130 PetriNetUnfolder]: For 1439/1444 co-relation queries the response was YES. [2022-07-21 09:00:10,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 609 events. 93/609 cut-off events. For 1439/1444 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3060 event pairs, 38 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 1688. Up to 151 conditions per place. [2022-07-21 09:00:10,233 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 18 changer transitions 19/213 dead transitions. [2022-07-21 09:00:10,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 213 transitions, 1227 flow [2022-07-21 09:00:10,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2204 transitions. [2022-07-21 09:00:10,234 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-07-21 09:00:10,234 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2204 transitions. [2022-07-21 09:00:10,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2204 transitions. [2022-07-21 09:00:10,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:10,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2204 transitions. [2022-07-21 09:00:10,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states 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 09:00:10,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 09:00:10,239 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 09:00:10,239 INFO L186 Difference]: Start difference. First operand has 216 places, 169 transitions, 635 flow. Second operand 16 states and 2204 transitions. [2022-07-21 09:00:10,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 213 transitions, 1227 flow [2022-07-21 09:00:10,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 213 transitions, 1099 flow, removed 63 selfloop flow, removed 7 redundant places. [2022-07-21 09:00:10,246 INFO L242 Difference]: Finished difference. Result has 228 places, 179 transitions, 754 flow [2022-07-21 09:00:10,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=754, PETRI_PLACES=228, PETRI_TRANSITIONS=179} [2022-07-21 09:00:10,250 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 69 predicate places. [2022-07-21 09:00:10,250 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 179 transitions, 754 flow [2022-07-21 09:00:10,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:10,251 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:10,251 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] [2022-07-21 09:00:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 09:00:10,252 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1951205417, now seen corresponding path program 4 times [2022-07-21 09:00:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:10,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080054864] [2022-07-21 09:00:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:10,333 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 09:00:10,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:10,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080054864] [2022-07-21 09:00:10,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080054864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:10,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:10,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:10,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136758431] [2022-07-21 09:00:10,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:10,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:10,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:10,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:10,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:10,335 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:10,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 179 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:10,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:10,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:10,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:10,634 INFO L129 PetriNetUnfolder]: 118/690 cut-off events. [2022-07-21 09:00:10,634 INFO L130 PetriNetUnfolder]: For 2042/2050 co-relation queries the response was YES. [2022-07-21 09:00:10,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 690 events. 118/690 cut-off events. For 2042/2050 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3601 event pairs, 54 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 2113. Up to 151 conditions per place. [2022-07-21 09:00:10,639 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 70 selfloop transitions, 20 changer transitions 29/239 dead transitions. [2022-07-21 09:00:10,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 239 transitions, 1596 flow [2022-07-21 09:00:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2022-07-21 09:00:10,641 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-07-21 09:00:10,641 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2750 transitions. [2022-07-21 09:00:10,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2750 transitions. [2022-07-21 09:00:10,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:10,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2750 transitions. [2022-07-21 09:00:10,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.5) internal successors, (2750), 20 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 09:00:10,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 09:00:10,646 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 09:00:10,646 INFO L186 Difference]: Start difference. First operand has 228 places, 179 transitions, 754 flow. Second operand 20 states and 2750 transitions. [2022-07-21 09:00:10,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 239 transitions, 1596 flow [2022-07-21 09:00:10,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 239 transitions, 1473 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-07-21 09:00:10,659 INFO L242 Difference]: Finished difference. Result has 249 places, 190 transitions, 914 flow [2022-07-21 09:00:10,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=914, PETRI_PLACES=249, PETRI_TRANSITIONS=190} [2022-07-21 09:00:10,661 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-21 09:00:10,661 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 190 transitions, 914 flow [2022-07-21 09:00:10,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:10,661 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:10,662 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] [2022-07-21 09:00:10,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 09:00:10,662 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:10,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1904803889, now seen corresponding path program 5 times [2022-07-21 09:00:10,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:10,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632014880] [2022-07-21 09:00:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:10,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:10,777 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 09:00:10,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:10,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632014880] [2022-07-21 09:00:10,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632014880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:10,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:10,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:10,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504079954] [2022-07-21 09:00:10,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:10,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:10,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:10,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:10,779 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:10,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 190 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:10,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:10,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:10,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:11,121 INFO L129 PetriNetUnfolder]: 113/672 cut-off events. [2022-07-21 09:00:11,123 INFO L130 PetriNetUnfolder]: For 3092/3103 co-relation queries the response was YES. [2022-07-21 09:00:11,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 672 events. 113/672 cut-off events. For 3092/3103 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3526 event pairs, 39 based on Foata normal form. 1/652 useless extension candidates. Maximal degree in co-relation 2286. Up to 113 conditions per place. [2022-07-21 09:00:11,130 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 94 selfloop transitions, 21 changer transitions 38/273 dead transitions. [2022-07-21 09:00:11,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 273 transitions, 2069 flow [2022-07-21 09:00:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3298 transitions. [2022-07-21 09:00:11,132 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7807765151515151 [2022-07-21 09:00:11,133 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3298 transitions. [2022-07-21 09:00:11,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3298 transitions. [2022-07-21 09:00:11,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:11,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3298 transitions. [2022-07-21 09:00:11,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.41666666666666) internal successors, (3298), 24 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states 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 09:00:11,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states 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 09:00:11,139 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states 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 09:00:11,140 INFO L186 Difference]: Start difference. First operand has 249 places, 190 transitions, 914 flow. Second operand 24 states and 3298 transitions. [2022-07-21 09:00:11,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 273 transitions, 2069 flow [2022-07-21 09:00:11,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 1907 flow, removed 74 selfloop flow, removed 10 redundant places. [2022-07-21 09:00:11,153 INFO L242 Difference]: Finished difference. Result has 269 places, 192 transitions, 1002 flow [2022-07-21 09:00:11,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1002, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-07-21 09:00:11,154 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-21 09:00:11,154 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1002 flow [2022-07-21 09:00:11,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:11,155 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:11,155 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] [2022-07-21 09:00:11,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 09:00:11,155 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:11,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:11,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576121, now seen corresponding path program 6 times [2022-07-21 09:00:11,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:11,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799030630] [2022-07-21 09:00:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:11,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:11,233 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 09:00:11,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:11,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799030630] [2022-07-21 09:00:11,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799030630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:11,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:11,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598591712] [2022-07-21 09:00:11,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:11,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:11,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:11,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:11,236 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:11,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1002 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:11,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:11,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:11,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:11,579 INFO L129 PetriNetUnfolder]: 122/739 cut-off events. [2022-07-21 09:00:11,580 INFO L130 PetriNetUnfolder]: For 3969/3978 co-relation queries the response was YES. [2022-07-21 09:00:11,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 739 events. 122/739 cut-off events. For 3969/3978 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4115 event pairs, 44 based on Foata normal form. 3/722 useless extension candidates. Maximal degree in co-relation 2612. Up to 167 conditions per place. [2022-07-21 09:00:11,586 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 22 changer transitions 29/242 dead transitions. [2022-07-21 09:00:11,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 242 transitions, 1877 flow [2022-07-21 09:00:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3015 transitions. [2022-07-21 09:00:11,590 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7786673553719008 [2022-07-21 09:00:11,590 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3015 transitions. [2022-07-21 09:00:11,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3015 transitions. [2022-07-21 09:00:11,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:11,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3015 transitions. [2022-07-21 09:00:11,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.04545454545453) internal successors, (3015), 22 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states 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 09:00:11,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 09:00:11,596 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 09:00:11,596 INFO L186 Difference]: Start difference. First operand has 269 places, 192 transitions, 1002 flow. Second operand 22 states and 3015 transitions. [2022-07-21 09:00:11,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 242 transitions, 1877 flow [2022-07-21 09:00:11,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 242 transitions, 1750 flow, removed 38 selfloop flow, removed 18 redundant places. [2022-07-21 09:00:11,609 INFO L242 Difference]: Finished difference. Result has 270 places, 195 transitions, 1074 flow [2022-07-21 09:00:11,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1074, PETRI_PLACES=270, PETRI_TRANSITIONS=195} [2022-07-21 09:00:11,611 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-21 09:00:11,611 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 195 transitions, 1074 flow [2022-07-21 09:00:11,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:11,611 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:11,611 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] [2022-07-21 09:00:11,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 09:00:11,612 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1112985117, now seen corresponding path program 7 times [2022-07-21 09:00:11,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:11,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936272825] [2022-07-21 09:00:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:11,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:11,712 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 09:00:11,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:11,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936272825] [2022-07-21 09:00:11,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936272825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:11,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:11,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:11,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043221953] [2022-07-21 09:00:11,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:11,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:11,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:11,715 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:11,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 195 transitions, 1074 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:11,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:11,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:11,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:12,048 INFO L129 PetriNetUnfolder]: 117/715 cut-off events. [2022-07-21 09:00:12,049 INFO L130 PetriNetUnfolder]: For 4829/4840 co-relation queries the response was YES. [2022-07-21 09:00:12,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 715 events. 117/715 cut-off events. For 4829/4840 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3945 event pairs, 39 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 2664. Up to 163 conditions per place. [2022-07-21 09:00:12,054 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 83 selfloop transitions, 21 changer transitions 29/253 dead transitions. [2022-07-21 09:00:12,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 253 transitions, 2256 flow [2022-07-21 09:00:12,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2887 transitions. [2022-07-21 09:00:12,057 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7811147186147186 [2022-07-21 09:00:12,057 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2887 transitions. [2022-07-21 09:00:12,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2887 transitions. [2022-07-21 09:00:12,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:12,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2887 transitions. [2022-07-21 09:00:12,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.47619047619048) internal successors, (2887), 21 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states 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 09:00:12,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 09:00:12,061 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 09:00:12,061 INFO L186 Difference]: Start difference. First operand has 270 places, 195 transitions, 1074 flow. Second operand 21 states and 2887 transitions. [2022-07-21 09:00:12,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 253 transitions, 2256 flow [2022-07-21 09:00:12,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 253 transitions, 2065 flow, removed 82 selfloop flow, removed 13 redundant places. [2022-07-21 09:00:12,079 INFO L242 Difference]: Finished difference. Result has 279 places, 205 transitions, 1294 flow [2022-07-21 09:00:12,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1294, PETRI_PLACES=279, PETRI_TRANSITIONS=205} [2022-07-21 09:00:12,079 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 120 predicate places. [2022-07-21 09:00:12,080 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 205 transitions, 1294 flow [2022-07-21 09:00:12,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:12,080 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:12,080 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] [2022-07-21 09:00:12,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 09:00:12,081 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:12,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:12,081 INFO L85 PathProgramCache]: Analyzing trace with hash 181054911, now seen corresponding path program 8 times [2022-07-21 09:00:12,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:12,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421337369] [2022-07-21 09:00:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:12,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:12,158 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 09:00:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:12,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421337369] [2022-07-21 09:00:12,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421337369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:12,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:12,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:12,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250769715] [2022-07-21 09:00:12,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:12,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:12,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:12,161 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:12,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 205 transitions, 1294 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:12,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:12,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:12,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:12,425 INFO L129 PetriNetUnfolder]: 107/708 cut-off events. [2022-07-21 09:00:12,425 INFO L130 PetriNetUnfolder]: For 5276/5293 co-relation queries the response was YES. [2022-07-21 09:00:12,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 708 events. 107/708 cut-off events. For 5276/5293 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3908 event pairs, 40 based on Foata normal form. 4/690 useless extension candidates. Maximal degree in co-relation 2651. Up to 172 conditions per place. [2022-07-21 09:00:12,431 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 27 changer transitions 30/254 dead transitions. [2022-07-21 09:00:12,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 254 transitions, 2377 flow [2022-07-21 09:00:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2747 transitions. [2022-07-21 09:00:12,433 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7803977272727273 [2022-07-21 09:00:12,433 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2747 transitions. [2022-07-21 09:00:12,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2747 transitions. [2022-07-21 09:00:12,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:12,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2747 transitions. [2022-07-21 09:00:12,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.35) internal successors, (2747), 20 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states 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 09:00:12,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 09:00:12,438 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 09:00:12,438 INFO L186 Difference]: Start difference. First operand has 279 places, 205 transitions, 1294 flow. Second operand 20 states and 2747 transitions. [2022-07-21 09:00:12,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 254 transitions, 2377 flow [2022-07-21 09:00:12,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 254 transitions, 2140 flow, removed 110 selfloop flow, removed 12 redundant places. [2022-07-21 09:00:12,456 INFO L242 Difference]: Finished difference. Result has 288 places, 213 transitions, 1448 flow [2022-07-21 09:00:12,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1448, PETRI_PLACES=288, PETRI_TRANSITIONS=213} [2022-07-21 09:00:12,457 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 129 predicate places. [2022-07-21 09:00:12,457 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 213 transitions, 1448 flow [2022-07-21 09:00:12,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:12,457 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:12,458 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] [2022-07-21 09:00:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 09:00:12,458 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:12,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1414141161, now seen corresponding path program 9 times [2022-07-21 09:00:12,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:12,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391178577] [2022-07-21 09:00:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:12,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:12,530 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 09:00:12,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:12,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391178577] [2022-07-21 09:00:12,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391178577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:12,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:12,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:12,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366908811] [2022-07-21 09:00:12,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:12,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:12,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:12,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:12,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:12,532 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:12,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 213 transitions, 1448 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:12,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:12,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:12,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:12,766 INFO L129 PetriNetUnfolder]: 94/653 cut-off events. [2022-07-21 09:00:12,766 INFO L130 PetriNetUnfolder]: For 4246/4255 co-relation queries the response was YES. [2022-07-21 09:00:12,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 653 events. 94/653 cut-off events. For 4246/4255 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3428 event pairs, 33 based on Foata normal form. 3/636 useless extension candidates. Maximal degree in co-relation 2350. Up to 158 conditions per place. [2022-07-21 09:00:12,770 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 18 changer transitions 30/240 dead transitions. [2022-07-21 09:00:12,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 240 transitions, 2074 flow [2022-07-21 09:00:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-07-21 09:00:12,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787247474747475 [2022-07-21 09:00:12,773 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2467 transitions. [2022-07-21 09:00:12,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2467 transitions. [2022-07-21 09:00:12,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:12,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2467 transitions. [2022-07-21 09:00:12,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.05555555555554) internal successors, (2467), 18 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states 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 09:00:12,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:12,777 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:12,777 INFO L186 Difference]: Start difference. First operand has 288 places, 213 transitions, 1448 flow. Second operand 18 states and 2467 transitions. [2022-07-21 09:00:12,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 240 transitions, 2074 flow [2022-07-21 09:00:12,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 240 transitions, 1884 flow, removed 70 selfloop flow, removed 16 redundant places. [2022-07-21 09:00:12,792 INFO L242 Difference]: Finished difference. Result has 284 places, 198 transitions, 1165 flow [2022-07-21 09:00:12,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1165, PETRI_PLACES=284, PETRI_TRANSITIONS=198} [2022-07-21 09:00:12,793 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 125 predicate places. [2022-07-21 09:00:12,793 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 198 transitions, 1165 flow [2022-07-21 09:00:12,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:12,794 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:12,794 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] [2022-07-21 09:00:12,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 09:00:12,794 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1457045623, now seen corresponding path program 10 times [2022-07-21 09:00:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:12,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313067627] [2022-07-21 09:00:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:12,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:12,871 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 09:00:12,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:12,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313067627] [2022-07-21 09:00:12,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313067627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:12,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:12,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:12,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292949705] [2022-07-21 09:00:12,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:12,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:12,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:12,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:12,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:12,875 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:12,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 198 transitions, 1165 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:12,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:12,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:12,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:13,135 INFO L129 PetriNetUnfolder]: 99/670 cut-off events. [2022-07-21 09:00:13,135 INFO L130 PetriNetUnfolder]: For 3956/3971 co-relation queries the response was YES. [2022-07-21 09:00:13,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 670 events. 99/670 cut-off events. For 3956/3971 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3565 event pairs, 36 based on Foata normal form. 3/652 useless extension candidates. Maximal degree in co-relation 2367. Up to 160 conditions per place. [2022-07-21 09:00:13,142 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 24 changer transitions 24/239 dead transitions. [2022-07-21 09:00:13,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 239 transitions, 1992 flow [2022-07-21 09:00:13,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:13,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2343 transitions. [2022-07-21 09:00:13,144 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7830882352941176 [2022-07-21 09:00:13,144 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2343 transitions. [2022-07-21 09:00:13,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2343 transitions. [2022-07-21 09:00:13,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:13,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2343 transitions. [2022-07-21 09:00:13,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.8235294117647) internal successors, (2343), 17 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states 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 09:00:13,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:13,148 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:13,148 INFO L186 Difference]: Start difference. First operand has 284 places, 198 transitions, 1165 flow. Second operand 17 states and 2343 transitions. [2022-07-21 09:00:13,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 239 transitions, 1992 flow [2022-07-21 09:00:13,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 239 transitions, 1827 flow, removed 32 selfloop flow, removed 15 redundant places. [2022-07-21 09:00:13,164 INFO L242 Difference]: Finished difference. Result has 272 places, 206 transitions, 1296 flow [2022-07-21 09:00:13,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1296, PETRI_PLACES=272, PETRI_TRANSITIONS=206} [2022-07-21 09:00:13,164 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 113 predicate places. [2022-07-21 09:00:13,164 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 206 transitions, 1296 flow [2022-07-21 09:00:13,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:13,165 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:13,165 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:13,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 09:00:13,165 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1870034335, now seen corresponding path program 11 times [2022-07-21 09:00:13,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:13,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771824140] [2022-07-21 09:00:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:13,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:13,243 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 09:00:13,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:13,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771824140] [2022-07-21 09:00:13,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771824140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:13,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:13,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142130527] [2022-07-21 09:00:13,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:13,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:13,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:13,245 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:13,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 206 transitions, 1296 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:13,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:13,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:13,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:13,473 INFO L129 PetriNetUnfolder]: 96/674 cut-off events. [2022-07-21 09:00:13,474 INFO L130 PetriNetUnfolder]: For 3491/3498 co-relation queries the response was YES. [2022-07-21 09:00:13,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 674 events. 96/674 cut-off events. For 3491/3498 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3594 event pairs, 39 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 2335. Up to 162 conditions per place. [2022-07-21 09:00:13,480 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 27 changer transitions 24/243 dead transitions. [2022-07-21 09:00:13,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 243 transitions, 2090 flow [2022-07-21 09:00:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2341 transitions. [2022-07-21 09:00:13,489 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7824197860962567 [2022-07-21 09:00:13,489 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2341 transitions. [2022-07-21 09:00:13,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2341 transitions. [2022-07-21 09:00:13,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:13,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2341 transitions. [2022-07-21 09:00:13,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.7058823529412) internal successors, (2341), 17 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states 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 09:00:13,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:13,493 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:13,495 INFO L186 Difference]: Start difference. First operand has 272 places, 206 transitions, 1296 flow. Second operand 17 states and 2341 transitions. [2022-07-21 09:00:13,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 243 transitions, 2090 flow [2022-07-21 09:00:13,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 243 transitions, 1968 flow, removed 35 selfloop flow, removed 10 redundant places. [2022-07-21 09:00:13,512 INFO L242 Difference]: Finished difference. Result has 280 places, 214 transitions, 1451 flow [2022-07-21 09:00:13,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1451, PETRI_PLACES=280, PETRI_TRANSITIONS=214} [2022-07-21 09:00:13,512 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-07-21 09:00:13,513 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 214 transitions, 1451 flow [2022-07-21 09:00:13,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:13,513 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:13,513 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] [2022-07-21 09:00:13,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 09:00:13,514 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:13,514 INFO L85 PathProgramCache]: Analyzing trace with hash -264747361, now seen corresponding path program 12 times [2022-07-21 09:00:13,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:13,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214831713] [2022-07-21 09:00:13,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:13,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:13,599 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 09:00:13,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:13,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214831713] [2022-07-21 09:00:13,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214831713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:13,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:13,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765869420] [2022-07-21 09:00:13,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:13,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:13,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:13,602 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:13,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 214 transitions, 1451 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:13,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:13,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:13,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:13,873 INFO L129 PetriNetUnfolder]: 88/645 cut-off events. [2022-07-21 09:00:13,874 INFO L130 PetriNetUnfolder]: For 2921/2928 co-relation queries the response was YES. [2022-07-21 09:00:13,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 645 events. 88/645 cut-off events. For 2921/2928 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3371 event pairs, 37 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 2136. Up to 154 conditions per place. [2022-07-21 09:00:13,879 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 69 selfloop transitions, 16 changer transitions 30/235 dead transitions. [2022-07-21 09:00:13,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 235 transitions, 1916 flow [2022-07-21 09:00:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2472 transitions. [2022-07-21 09:00:13,881 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7803030303030303 [2022-07-21 09:00:13,881 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2472 transitions. [2022-07-21 09:00:13,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2472 transitions. [2022-07-21 09:00:13,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:13,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2472 transitions. [2022-07-21 09:00:13,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.33333333333334) internal successors, (2472), 18 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 09:00:13,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:13,885 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:13,885 INFO L186 Difference]: Start difference. First operand has 280 places, 214 transitions, 1451 flow. Second operand 18 states and 2472 transitions. [2022-07-21 09:00:13,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 235 transitions, 1916 flow [2022-07-21 09:00:13,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 235 transitions, 1809 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-21 09:00:13,900 INFO L242 Difference]: Finished difference. Result has 286 places, 200 transitions, 1180 flow [2022-07-21 09:00:13,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1180, PETRI_PLACES=286, PETRI_TRANSITIONS=200} [2022-07-21 09:00:13,901 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2022-07-21 09:00:13,901 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 200 transitions, 1180 flow [2022-07-21 09:00:13,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:13,901 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:13,901 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] [2022-07-21 09:00:13,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-21 09:00:13,901 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:13,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:13,902 INFO L85 PathProgramCache]: Analyzing trace with hash -873208415, now seen corresponding path program 13 times [2022-07-21 09:00:13,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:13,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140724885] [2022-07-21 09:00:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:13,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:13,983 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 09:00:13,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:13,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140724885] [2022-07-21 09:00:13,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140724885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:13,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:13,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:13,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129277829] [2022-07-21 09:00:13,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:13,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:13,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:13,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:13,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:13,985 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:13,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 200 transitions, 1180 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:13,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:13,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:13,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:14,237 INFO L129 PetriNetUnfolder]: 75/576 cut-off events. [2022-07-21 09:00:14,238 INFO L130 PetriNetUnfolder]: For 2388/2403 co-relation queries the response was YES. [2022-07-21 09:00:14,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 576 events. 75/576 cut-off events. For 2388/2403 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2778 event pairs, 33 based on Foata normal form. 3/560 useless extension candidates. Maximal degree in co-relation 1783. Up to 145 conditions per place. [2022-07-21 09:00:14,241 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 5 changer transitions 29/213 dead transitions. [2022-07-21 09:00:14,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 213 transitions, 1501 flow [2022-07-21 09:00:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2461 transitions. [2022-07-21 09:00:14,243 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7768308080808081 [2022-07-21 09:00:14,243 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2461 transitions. [2022-07-21 09:00:14,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2461 transitions. [2022-07-21 09:00:14,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:14,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2461 transitions. [2022-07-21 09:00:14,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.72222222222223) internal successors, (2461), 18 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states 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 09:00:14,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:14,247 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:14,247 INFO L186 Difference]: Start difference. First operand has 286 places, 200 transitions, 1180 flow. Second operand 18 states and 2461 transitions. [2022-07-21 09:00:14,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 213 transitions, 1501 flow [2022-07-21 09:00:14,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 213 transitions, 1382 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-21 09:00:14,258 INFO L242 Difference]: Finished difference. Result has 273 places, 180 transitions, 842 flow [2022-07-21 09:00:14,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=842, PETRI_PLACES=273, PETRI_TRANSITIONS=180} [2022-07-21 09:00:14,259 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2022-07-21 09:00:14,259 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 180 transitions, 842 flow [2022-07-21 09:00:14,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:14,259 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:14,259 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] [2022-07-21 09:00:14,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-21 09:00:14,260 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:14,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1784959983, now seen corresponding path program 14 times [2022-07-21 09:00:14,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:14,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963334090] [2022-07-21 09:00:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:14,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:14,343 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 09:00:14,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:14,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963334090] [2022-07-21 09:00:14,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963334090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:14,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:14,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:14,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706156285] [2022-07-21 09:00:14,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:14,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:14,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:14,345 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:14,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 180 transitions, 842 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:14,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:14,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:14,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:14,647 INFO L129 PetriNetUnfolder]: 77/619 cut-off events. [2022-07-21 09:00:14,648 INFO L130 PetriNetUnfolder]: For 1864/1869 co-relation queries the response was YES. [2022-07-21 09:00:14,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 619 events. 77/619 cut-off events. For 1864/1869 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3184 event pairs, 33 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 1776. Up to 126 conditions per place. [2022-07-21 09:00:14,651 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 21 changer transitions 30/225 dead transitions. [2022-07-21 09:00:14,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 225 transitions, 1555 flow [2022-07-21 09:00:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3011 transitions. [2022-07-21 09:00:14,654 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776342975206612 [2022-07-21 09:00:14,654 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3011 transitions. [2022-07-21 09:00:14,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3011 transitions. [2022-07-21 09:00:14,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:14,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3011 transitions. [2022-07-21 09:00:14,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 136.86363636363637) internal successors, (3011), 22 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states 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 09:00:14,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 09:00:14,659 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 09:00:14,659 INFO L186 Difference]: Start difference. First operand has 273 places, 180 transitions, 842 flow. Second operand 22 states and 3011 transitions. [2022-07-21 09:00:14,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 225 transitions, 1555 flow [2022-07-21 09:00:14,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 225 transitions, 1406 flow, removed 30 selfloop flow, removed 21 redundant places. [2022-07-21 09:00:14,668 INFO L242 Difference]: Finished difference. Result has 259 places, 185 transitions, 914 flow [2022-07-21 09:00:14,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=914, PETRI_PLACES=259, PETRI_TRANSITIONS=185} [2022-07-21 09:00:14,669 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 100 predicate places. [2022-07-21 09:00:14,669 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 185 transitions, 914 flow [2022-07-21 09:00:14,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:14,669 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:14,669 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] [2022-07-21 09:00:14,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-21 09:00:14,670 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:14,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:14,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1090332437, now seen corresponding path program 15 times [2022-07-21 09:00:14,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:14,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576289646] [2022-07-21 09:00:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:14,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:14,767 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 09:00:14,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576289646] [2022-07-21 09:00:14,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576289646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:14,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:14,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:14,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283696640] [2022-07-21 09:00:14,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:14,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:14,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:14,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:14,770 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:14,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 185 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:14,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:14,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:14,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:15,003 INFO L129 PetriNetUnfolder]: 78/612 cut-off events. [2022-07-21 09:00:15,003 INFO L130 PetriNetUnfolder]: For 1916/1921 co-relation queries the response was YES. [2022-07-21 09:00:15,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 612 events. 78/612 cut-off events. For 1916/1921 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3133 event pairs, 32 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 1817. Up to 133 conditions per place. [2022-07-21 09:00:15,007 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 55 selfloop transitions, 27 changer transitions 23/225 dead transitions. [2022-07-21 09:00:15,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 1600 flow [2022-07-21 09:00:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2336 transitions. [2022-07-21 09:00:15,009 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7807486631016043 [2022-07-21 09:00:15,009 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2336 transitions. [2022-07-21 09:00:15,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2336 transitions. [2022-07-21 09:00:15,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:15,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2336 transitions. [2022-07-21 09:00:15,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.41176470588235) internal successors, (2336), 17 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 09:00:15,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:15,013 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:15,013 INFO L186 Difference]: Start difference. First operand has 259 places, 185 transitions, 914 flow. Second operand 17 states and 2336 transitions. [2022-07-21 09:00:15,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 1600 flow [2022-07-21 09:00:15,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 225 transitions, 1514 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-07-21 09:00:15,022 INFO L242 Difference]: Finished difference. Result has 258 places, 193 transitions, 1069 flow [2022-07-21 09:00:15,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1069, PETRI_PLACES=258, PETRI_TRANSITIONS=193} [2022-07-21 09:00:15,023 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-21 09:00:15,023 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 193 transitions, 1069 flow [2022-07-21 09:00:15,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:15,023 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:15,023 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:15,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 09:00:15,023 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:15,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2132873829, now seen corresponding path program 16 times [2022-07-21 09:00:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:15,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117428441] [2022-07-21 09:00:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:15,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:15,096 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 09:00:15,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:15,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117428441] [2022-07-21 09:00:15,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117428441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:15,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:15,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:15,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955769835] [2022-07-21 09:00:15,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:15,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:15,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:15,098 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:15,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 193 transitions, 1069 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:15,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:15,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:15,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:15,310 INFO L129 PetriNetUnfolder]: 68/574 cut-off events. [2022-07-21 09:00:15,310 INFO L130 PetriNetUnfolder]: For 1750/1755 co-relation queries the response was YES. [2022-07-21 09:00:15,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 574 events. 68/574 cut-off events. For 1750/1755 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2811 event pairs, 33 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 1684. Up to 127 conditions per place. [2022-07-21 09:00:15,314 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 12 changer transitions 29/213 dead transitions. [2022-07-21 09:00:15,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 213 transitions, 1447 flow [2022-07-21 09:00:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:15,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:15,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2022-07-21 09:00:15,316 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780934343434344 [2022-07-21 09:00:15,316 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2465 transitions. [2022-07-21 09:00:15,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2465 transitions. [2022-07-21 09:00:15,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:15,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2465 transitions. [2022-07-21 09:00:15,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.94444444444446) internal successors, (2465), 18 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states 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 09:00:15,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:15,320 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:15,320 INFO L186 Difference]: Start difference. First operand has 258 places, 193 transitions, 1069 flow. Second operand 18 states and 2465 transitions. [2022-07-21 09:00:15,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 213 transitions, 1447 flow [2022-07-21 09:00:15,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 213 transitions, 1347 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-07-21 09:00:15,330 INFO L242 Difference]: Finished difference. Result has 265 places, 178 transitions, 821 flow [2022-07-21 09:00:15,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=821, PETRI_PLACES=265, PETRI_TRANSITIONS=178} [2022-07-21 09:00:15,330 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 106 predicate places. [2022-07-21 09:00:15,330 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 178 transitions, 821 flow [2022-07-21 09:00:15,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:15,331 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:15,331 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] [2022-07-21 09:00:15,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 09:00:15,331 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:15,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:15,331 INFO L85 PathProgramCache]: Analyzing trace with hash 919394503, now seen corresponding path program 17 times [2022-07-21 09:00:15,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:15,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276557607] [2022-07-21 09:00:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:15,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:15,417 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 09:00:15,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:15,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276557607] [2022-07-21 09:00:15,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276557607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:15,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:15,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864845564] [2022-07-21 09:00:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:15,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:15,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:15,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:15,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:15,420 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:15,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 178 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:15,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:15,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:15,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:15,714 INFO L129 PetriNetUnfolder]: 67/553 cut-off events. [2022-07-21 09:00:15,715 INFO L130 PetriNetUnfolder]: For 1743/1748 co-relation queries the response was YES. [2022-07-21 09:00:15,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 553 events. 67/553 cut-off events. For 1743/1748 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2619 event pairs, 32 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 1625. Up to 117 conditions per place. [2022-07-21 09:00:15,719 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 19 changer transitions 30/217 dead transitions. [2022-07-21 09:00:15,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 217 transitions, 1526 flow [2022-07-21 09:00:15,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2875 transitions. [2022-07-21 09:00:15,722 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7778679653679653 [2022-07-21 09:00:15,722 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2875 transitions. [2022-07-21 09:00:15,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2875 transitions. [2022-07-21 09:00:15,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:15,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2875 transitions. [2022-07-21 09:00:15,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 136.9047619047619) internal successors, (2875), 21 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states 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 09:00:15,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 09:00:15,729 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 09:00:15,729 INFO L186 Difference]: Start difference. First operand has 265 places, 178 transitions, 821 flow. Second operand 21 states and 2875 transitions. [2022-07-21 09:00:15,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 217 transitions, 1526 flow [2022-07-21 09:00:15,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 217 transitions, 1360 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-21 09:00:15,738 INFO L242 Difference]: Finished difference. Result has 258 places, 182 transitions, 903 flow [2022-07-21 09:00:15,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=903, PETRI_PLACES=258, PETRI_TRANSITIONS=182} [2022-07-21 09:00:15,739 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-21 09:00:15,739 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 182 transitions, 903 flow [2022-07-21 09:00:15,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:15,740 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:15,740 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] [2022-07-21 09:00:15,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-21 09:00:15,740 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1815134357, now seen corresponding path program 18 times [2022-07-21 09:00:15,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:15,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869864228] [2022-07-21 09:00:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:15,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:15,821 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 09:00:15,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:15,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869864228] [2022-07-21 09:00:15,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869864228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:15,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:15,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:15,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007150392] [2022-07-21 09:00:15,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:15,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:15,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:15,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:15,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:15,824 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:15,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 182 transitions, 903 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:15,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:15,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:15,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:16,046 INFO L129 PetriNetUnfolder]: 62/537 cut-off events. [2022-07-21 09:00:16,046 INFO L130 PetriNetUnfolder]: For 1725/1730 co-relation queries the response was YES. [2022-07-21 09:00:16,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 537 events. 62/537 cut-off events. For 1725/1730 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2485 event pairs, 32 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 1557. Up to 122 conditions per place. [2022-07-21 09:00:16,050 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 44 selfloop transitions, 21 changer transitions 26/211 dead transitions. [2022-07-21 09:00:16,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 211 transitions, 1453 flow [2022-07-21 09:00:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2022-07-21 09:00:16,051 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7796717171717171 [2022-07-21 09:00:16,051 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2470 transitions. [2022-07-21 09:00:16,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2470 transitions. [2022-07-21 09:00:16,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:16,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2470 transitions. [2022-07-21 09:00:16,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.22222222222223) internal successors, (2470), 18 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states 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 09:00:16,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:16,055 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:16,055 INFO L186 Difference]: Start difference. First operand has 258 places, 182 transitions, 903 flow. Second operand 18 states and 2470 transitions. [2022-07-21 09:00:16,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 211 transitions, 1453 flow [2022-07-21 09:00:16,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 211 transitions, 1338 flow, removed 43 selfloop flow, removed 14 redundant places. [2022-07-21 09:00:16,064 INFO L242 Difference]: Finished difference. Result has 253 places, 183 transitions, 928 flow [2022-07-21 09:00:16,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=928, PETRI_PLACES=253, PETRI_TRANSITIONS=183} [2022-07-21 09:00:16,065 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-07-21 09:00:16,065 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 183 transitions, 928 flow [2022-07-21 09:00:16,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:16,065 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:16,065 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] [2022-07-21 09:00:16,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-21 09:00:16,066 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:16,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:16,066 INFO L85 PathProgramCache]: Analyzing trace with hash 168894361, now seen corresponding path program 19 times [2022-07-21 09:00:16,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:16,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206717028] [2022-07-21 09:00:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:16,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:16,149 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 09:00:16,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:16,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206717028] [2022-07-21 09:00:16,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206717028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:16,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:16,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668312091] [2022-07-21 09:00:16,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:16,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:16,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:16,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:16,151 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:16,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 183 transitions, 928 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:16,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:16,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:16,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:16,345 INFO L129 PetriNetUnfolder]: 60/534 cut-off events. [2022-07-21 09:00:16,345 INFO L130 PetriNetUnfolder]: For 1345/1350 co-relation queries the response was YES. [2022-07-21 09:00:16,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 534 events. 60/534 cut-off events. For 1345/1350 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2494 event pairs, 35 based on Foata normal form. 1/516 useless extension candidates. Maximal degree in co-relation 1467. Up to 121 conditions per place. [2022-07-21 09:00:16,348 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 42 selfloop transitions, 13 changer transitions 28/203 dead transitions. [2022-07-21 09:00:16,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 203 transitions, 1275 flow [2022-07-21 09:00:16,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:16,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-07-21 09:00:16,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787247474747475 [2022-07-21 09:00:16,350 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2467 transitions. [2022-07-21 09:00:16,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2467 transitions. [2022-07-21 09:00:16,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:16,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2467 transitions. [2022-07-21 09:00:16,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.05555555555554) internal successors, (2467), 18 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states 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 09:00:16,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:16,354 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states 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 09:00:16,354 INFO L186 Difference]: Start difference. First operand has 253 places, 183 transitions, 928 flow. Second operand 18 states and 2467 transitions. [2022-07-21 09:00:16,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 203 transitions, 1275 flow [2022-07-21 09:00:16,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 203 transitions, 1138 flow, removed 37 selfloop flow, removed 14 redundant places. [2022-07-21 09:00:16,361 INFO L242 Difference]: Finished difference. Result has 255 places, 174 transitions, 754 flow [2022-07-21 09:00:16,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=754, PETRI_PLACES=255, PETRI_TRANSITIONS=174} [2022-07-21 09:00:16,362 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 96 predicate places. [2022-07-21 09:00:16,362 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 174 transitions, 754 flow [2022-07-21 09:00:16,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:16,362 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:16,362 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] [2022-07-21 09:00:16,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 09:00:16,363 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:16,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:16,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1082336479, now seen corresponding path program 20 times [2022-07-21 09:00:16,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:16,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382097517] [2022-07-21 09:00:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:16,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:16,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:16,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382097517] [2022-07-21 09:00:16,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382097517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:16,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:16,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:16,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375007798] [2022-07-21 09:00:16,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:16,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:16,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:16,532 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-21 09:00:16,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 174 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:16,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:16,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-21 09:00:16,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:16,724 INFO L129 PetriNetUnfolder]: 48/440 cut-off events. [2022-07-21 09:00:16,724 INFO L130 PetriNetUnfolder]: For 836/841 co-relation queries the response was YES. [2022-07-21 09:00:16,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 440 events. 48/440 cut-off events. For 836/841 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1801 event pairs, 29 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1090. Up to 100 conditions per place. [2022-07-21 09:00:16,737 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 29 selfloop transitions, 0 changer transitions 40/183 dead transitions. [2022-07-21 09:00:16,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 183 transitions, 918 flow [2022-07-21 09:00:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2322 transitions. [2022-07-21 09:00:16,739 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7760695187165776 [2022-07-21 09:00:16,739 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2322 transitions. [2022-07-21 09:00:16,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2322 transitions. [2022-07-21 09:00:16,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:16,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2322 transitions. [2022-07-21 09:00:16,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 136.58823529411765) internal successors, (2322), 17 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states 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 09:00:16,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:16,742 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 09:00:16,743 INFO L186 Difference]: Start difference. First operand has 255 places, 174 transitions, 754 flow. Second operand 17 states and 2322 transitions. [2022-07-21 09:00:16,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 183 transitions, 918 flow [2022-07-21 09:00:16,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 183 transitions, 828 flow, removed 21 selfloop flow, removed 19 redundant places. [2022-07-21 09:00:16,748 INFO L242 Difference]: Finished difference. Result has 238 places, 143 transitions, 394 flow [2022-07-21 09:00:16,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=394, PETRI_PLACES=238, PETRI_TRANSITIONS=143} [2022-07-21 09:00:16,750 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 79 predicate places. [2022-07-21 09:00:16,750 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 143 transitions, 394 flow [2022-07-21 09:00:16,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states 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 09:00:16,751 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:16,751 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] [2022-07-21 09:00:16,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-21 09:00:16,751 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:16,751 INFO L85 PathProgramCache]: Analyzing trace with hash 191306843, now seen corresponding path program 1 times [2022-07-21 09:00:16,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:16,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106522535] [2022-07-21 09:00:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:16,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:17,226 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 09:00:17,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:17,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106522535] [2022-07-21 09:00:17,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106522535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:17,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:17,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:17,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847970698] [2022-07-21 09:00:17,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:17,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:17,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:17,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:17,230 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:17,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 143 transitions, 394 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:17,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:17,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:17,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:19,506 INFO L129 PetriNetUnfolder]: 387/1388 cut-off events. [2022-07-21 09:00:19,506 INFO L130 PetriNetUnfolder]: For 1577/1579 co-relation queries the response was YES. [2022-07-21 09:00:19,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 1388 events. 387/1388 cut-off events. For 1577/1579 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8118 event pairs, 18 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 3170. Up to 141 conditions per place. [2022-07-21 09:00:19,514 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 184 selfloop transitions, 35 changer transitions 39/345 dead transitions. [2022-07-21 09:00:19,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 345 transitions, 1811 flow [2022-07-21 09:00:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-21 09:00:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-21 09:00:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4208 transitions. [2022-07-21 09:00:19,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6461916461916462 [2022-07-21 09:00:19,516 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4208 transitions. [2022-07-21 09:00:19,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4208 transitions. [2022-07-21 09:00:19,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:19,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4208 transitions. [2022-07-21 09:00:19,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 113.72972972972973) internal successors, (4208), 37 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states 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 09:00:19,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states 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 09:00:19,522 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states 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 09:00:19,523 INFO L186 Difference]: Start difference. First operand has 238 places, 143 transitions, 394 flow. Second operand 37 states and 4208 transitions. [2022-07-21 09:00:19,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 345 transitions, 1811 flow [2022-07-21 09:00:19,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 345 transitions, 1641 flow, removed 84 selfloop flow, removed 11 redundant places. [2022-07-21 09:00:19,529 INFO L242 Difference]: Finished difference. Result has 249 places, 170 transitions, 710 flow [2022-07-21 09:00:19,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=710, PETRI_PLACES=249, PETRI_TRANSITIONS=170} [2022-07-21 09:00:19,530 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-21 09:00:19,530 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 170 transitions, 710 flow [2022-07-21 09:00:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:19,530 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:19,530 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] [2022-07-21 09:00:19,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-21 09:00:19,531 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:19,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1559427641, now seen corresponding path program 2 times [2022-07-21 09:00:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:19,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600737965] [2022-07-21 09:00:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:19,951 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 09:00:19,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:19,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600737965] [2022-07-21 09:00:19,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600737965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:19,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:19,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:19,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865779803] [2022-07-21 09:00:19,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:19,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:19,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:19,954 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:19,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 170 transitions, 710 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:19,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:19,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:19,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:22,276 INFO L129 PetriNetUnfolder]: 415/1486 cut-off events. [2022-07-21 09:00:22,276 INFO L130 PetriNetUnfolder]: For 5572/5574 co-relation queries the response was YES. [2022-07-21 09:00:22,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 1486 events. 415/1486 cut-off events. For 5572/5574 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8885 event pairs, 34 based on Foata normal form. 1/1433 useless extension candidates. Maximal degree in co-relation 4445. Up to 136 conditions per place. [2022-07-21 09:00:22,288 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 192 selfloop transitions, 47 changer transitions 39/365 dead transitions. [2022-07-21 09:00:22,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 365 transitions, 2582 flow [2022-07-21 09:00:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:00:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:00:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3991 transitions. [2022-07-21 09:00:22,291 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6478896103896103 [2022-07-21 09:00:22,291 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3991 transitions. [2022-07-21 09:00:22,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3991 transitions. [2022-07-21 09:00:22,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:22,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3991 transitions. [2022-07-21 09:00:22,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.02857142857142) internal successors, (3991), 35 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states 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 09:00:22,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:22,298 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:22,298 INFO L186 Difference]: Start difference. First operand has 249 places, 170 transitions, 710 flow. Second operand 35 states and 3991 transitions. [2022-07-21 09:00:22,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 365 transitions, 2582 flow [2022-07-21 09:00:22,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 365 transitions, 2147 flow, removed 171 selfloop flow, removed 21 redundant places. [2022-07-21 09:00:22,314 INFO L242 Difference]: Finished difference. Result has 269 places, 192 transitions, 1036 flow [2022-07-21 09:00:22,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1036, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-07-21 09:00:22,315 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-21 09:00:22,315 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1036 flow [2022-07-21 09:00:22,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:22,316 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:22,316 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:22,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-21 09:00:22,316 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1306737223, now seen corresponding path program 3 times [2022-07-21 09:00:22,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:22,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297364208] [2022-07-21 09:00:22,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:22,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:22,754 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 09:00:22,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:22,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297364208] [2022-07-21 09:00:22,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297364208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:22,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:22,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:22,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031153325] [2022-07-21 09:00:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:22,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:22,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:22,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:22,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:22,757 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:22,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1036 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:22,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:22,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:22,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:26,885 INFO L129 PetriNetUnfolder]: 460/1585 cut-off events. [2022-07-21 09:00:26,885 INFO L130 PetriNetUnfolder]: For 5028/5030 co-relation queries the response was YES. [2022-07-21 09:00:26,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 1585 events. 460/1585 cut-off events. For 5028/5030 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9843 event pairs, 12 based on Foata normal form. 1/1562 useless extension candidates. Maximal degree in co-relation 5030. Up to 117 conditions per place. [2022-07-21 09:00:26,898 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 274 selfloop transitions, 35 changer transitions 124/520 dead transitions. [2022-07-21 09:00:26,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 520 transitions, 3984 flow [2022-07-21 09:00:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-21 09:00:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-07-21 09:00:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7313 transitions. [2022-07-21 09:00:26,903 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6392482517482517 [2022-07-21 09:00:26,903 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7313 transitions. [2022-07-21 09:00:26,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7313 transitions. [2022-07-21 09:00:26,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:26,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7313 transitions. [2022-07-21 09:00:26,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 112.50769230769231) internal successors, (7313), 65 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states 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 09:00:26,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states 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 09:00:26,915 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states 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 09:00:26,915 INFO L186 Difference]: Start difference. First operand has 269 places, 192 transitions, 1036 flow. Second operand 65 states and 7313 transitions. [2022-07-21 09:00:26,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 520 transitions, 3984 flow [2022-07-21 09:00:26,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 520 transitions, 3310 flow, removed 156 selfloop flow, removed 20 redundant places. [2022-07-21 09:00:26,936 INFO L242 Difference]: Finished difference. Result has 351 places, 192 transitions, 956 flow [2022-07-21 09:00:26,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=956, PETRI_PLACES=351, PETRI_TRANSITIONS=192} [2022-07-21 09:00:26,937 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 192 predicate places. [2022-07-21 09:00:26,937 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 192 transitions, 956 flow [2022-07-21 09:00:26,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:26,937 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:26,938 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] [2022-07-21 09:00:26,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-21 09:00:26,938 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash 715640743, now seen corresponding path program 4 times [2022-07-21 09:00:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:26,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617954312] [2022-07-21 09:00:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:27,351 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 09:00:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617954312] [2022-07-21 09:00:27,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617954312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:27,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:27,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128019993] [2022-07-21 09:00:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:27,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:27,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:27,353 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:27,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 192 transitions, 956 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:27,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:27,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:27,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:29,717 INFO L129 PetriNetUnfolder]: 504/1773 cut-off events. [2022-07-21 09:00:29,720 INFO L130 PetriNetUnfolder]: For 10024/10026 co-relation queries the response was YES. [2022-07-21 09:00:29,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 1773 events. 504/1773 cut-off events. For 10024/10026 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11149 event pairs, 62 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 6450. Up to 199 conditions per place. [2022-07-21 09:00:29,738 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 232 selfloop transitions, 41 changer transitions 44/404 dead transitions. [2022-07-21 09:00:29,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 404 transitions, 3417 flow [2022-07-21 09:00:29,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:00:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:00:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4007 transitions. [2022-07-21 09:00:29,740 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.650487012987013 [2022-07-21 09:00:29,740 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4007 transitions. [2022-07-21 09:00:29,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4007 transitions. [2022-07-21 09:00:29,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:29,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4007 transitions. [2022-07-21 09:00:29,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.48571428571428) internal successors, (4007), 35 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states 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 09:00:29,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:29,746 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:29,746 INFO L186 Difference]: Start difference. First operand has 351 places, 192 transitions, 956 flow. Second operand 35 states and 4007 transitions. [2022-07-21 09:00:29,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 404 transitions, 3417 flow [2022-07-21 09:00:29,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 404 transitions, 2909 flow, removed 115 selfloop flow, removed 60 redundant places. [2022-07-21 09:00:29,774 INFO L242 Difference]: Finished difference. Result has 298 places, 216 transitions, 1315 flow [2022-07-21 09:00:29,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1315, PETRI_PLACES=298, PETRI_TRANSITIONS=216} [2022-07-21 09:00:29,775 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 139 predicate places. [2022-07-21 09:00:29,775 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 216 transitions, 1315 flow [2022-07-21 09:00:29,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:29,775 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:29,775 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] [2022-07-21 09:00:29,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-21 09:00:29,776 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:29,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash 580382619, now seen corresponding path program 5 times [2022-07-21 09:00:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:29,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777458622] [2022-07-21 09:00:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:29,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:30,218 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 09:00:30,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:30,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777458622] [2022-07-21 09:00:30,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777458622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:30,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:30,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:30,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775774003] [2022-07-21 09:00:30,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:30,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:30,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:30,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:30,221 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:30,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 216 transitions, 1315 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:30,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:30,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:30,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:32,513 INFO L129 PetriNetUnfolder]: 631/2162 cut-off events. [2022-07-21 09:00:32,514 INFO L130 PetriNetUnfolder]: For 12409/12411 co-relation queries the response was YES. [2022-07-21 09:00:32,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8088 conditions, 2162 events. 631/2162 cut-off events. For 12409/12411 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 14432 event pairs, 102 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 7994. Up to 351 conditions per place. [2022-07-21 09:00:32,534 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 269 selfloop transitions, 46 changer transitions 36/438 dead transitions. [2022-07-21 09:00:32,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 438 transitions, 3868 flow [2022-07-21 09:00:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:00:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:00:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4004 transitions. [2022-07-21 09:00:32,537 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.65 [2022-07-21 09:00:32,537 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4004 transitions. [2022-07-21 09:00:32,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4004 transitions. [2022-07-21 09:00:32,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:32,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4004 transitions. [2022-07-21 09:00:32,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.4) internal successors, (4004), 35 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states 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 09:00:32,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:32,543 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:32,543 INFO L186 Difference]: Start difference. First operand has 298 places, 216 transitions, 1315 flow. Second operand 35 states and 4004 transitions. [2022-07-21 09:00:32,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 438 transitions, 3868 flow [2022-07-21 09:00:32,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 438 transitions, 3349 flow, removed 178 selfloop flow, removed 19 redundant places. [2022-07-21 09:00:32,580 INFO L242 Difference]: Finished difference. Result has 325 places, 243 transitions, 1560 flow [2022-07-21 09:00:32,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1560, PETRI_PLACES=325, PETRI_TRANSITIONS=243} [2022-07-21 09:00:32,581 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 166 predicate places. [2022-07-21 09:00:32,581 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 243 transitions, 1560 flow [2022-07-21 09:00:32,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:32,581 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:32,581 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] [2022-07-21 09:00:32,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-21 09:00:32,582 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:32,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash 640294289, now seen corresponding path program 6 times [2022-07-21 09:00:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:32,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111567683] [2022-07-21 09:00:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:32,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:33,032 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 09:00:33,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:33,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111567683] [2022-07-21 09:00:33,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111567683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:33,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:33,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:33,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532490371] [2022-07-21 09:00:33,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:33,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:33,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:33,035 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:33,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 243 transitions, 1560 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:33,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:33,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:33,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:35,744 INFO L129 PetriNetUnfolder]: 899/2991 cut-off events. [2022-07-21 09:00:35,744 INFO L130 PetriNetUnfolder]: For 20276/20278 co-relation queries the response was YES. [2022-07-21 09:00:35,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11851 conditions, 2991 events. 899/2991 cut-off events. For 20276/20278 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 22288 event pairs, 182 based on Foata normal form. 1/2899 useless extension candidates. Maximal degree in co-relation 11743. Up to 834 conditions per place. [2022-07-21 09:00:35,776 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 325 selfloop transitions, 58 changer transitions 39/509 dead transitions. [2022-07-21 09:00:35,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 509 transitions, 5165 flow [2022-07-21 09:00:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:00:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:00:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4024 transitions. [2022-07-21 09:00:35,779 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6532467532467533 [2022-07-21 09:00:35,779 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4024 transitions. [2022-07-21 09:00:35,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4024 transitions. [2022-07-21 09:00:35,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:35,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4024 transitions. [2022-07-21 09:00:35,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.97142857142858) internal successors, (4024), 35 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states 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 09:00:35,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:35,785 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:35,785 INFO L186 Difference]: Start difference. First operand has 325 places, 243 transitions, 1560 flow. Second operand 35 states and 4024 transitions. [2022-07-21 09:00:35,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 509 transitions, 5165 flow [2022-07-21 09:00:35,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 509 transitions, 4707 flow, removed 176 selfloop flow, removed 19 redundant places. [2022-07-21 09:00:35,869 INFO L242 Difference]: Finished difference. Result has 357 places, 274 transitions, 2132 flow [2022-07-21 09:00:35,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2132, PETRI_PLACES=357, PETRI_TRANSITIONS=274} [2022-07-21 09:00:35,869 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 198 predicate places. [2022-07-21 09:00:35,869 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 274 transitions, 2132 flow [2022-07-21 09:00:35,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:35,870 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:35,870 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] [2022-07-21 09:00:35,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-21 09:00:35,870 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:35,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1506690079, now seen corresponding path program 7 times [2022-07-21 09:00:35,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:35,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467017426] [2022-07-21 09:00:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:35,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:36,306 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 09:00:36,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:36,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467017426] [2022-07-21 09:00:36,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467017426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:36,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:36,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:36,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208556359] [2022-07-21 09:00:36,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:36,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:36,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:36,311 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:36,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 274 transitions, 2132 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:36,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:36,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:36,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:40,950 INFO L129 PetriNetUnfolder]: 1083/3715 cut-off events. [2022-07-21 09:00:40,951 INFO L130 PetriNetUnfolder]: For 32855/32857 co-relation queries the response was YES. [2022-07-21 09:00:40,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16015 conditions, 3715 events. 1083/3715 cut-off events. For 32855/32857 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 29851 event pairs, 237 based on Foata normal form. 1/3647 useless extension candidates. Maximal degree in co-relation 15889. Up to 864 conditions per place. [2022-07-21 09:00:40,996 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 413 selfloop transitions, 26 changer transitions 112/638 dead transitions. [2022-07-21 09:00:40,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 638 transitions, 6920 flow [2022-07-21 09:00:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-21 09:00:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-07-21 09:00:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7020 transitions. [2022-07-21 09:00:41,000 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6433284457478006 [2022-07-21 09:00:41,000 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7020 transitions. [2022-07-21 09:00:41,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7020 transitions. [2022-07-21 09:00:41,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:41,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7020 transitions. [2022-07-21 09:00:41,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.2258064516129) internal successors, (7020), 62 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states 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 09:00:41,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states 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 09:00:41,011 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states 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 09:00:41,011 INFO L186 Difference]: Start difference. First operand has 357 places, 274 transitions, 2132 flow. Second operand 62 states and 7020 transitions. [2022-07-21 09:00:41,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 638 transitions, 6920 flow [2022-07-21 09:00:41,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 638 transitions, 6210 flow, removed 354 selfloop flow, removed 15 redundant places. [2022-07-21 09:00:41,128 INFO L242 Difference]: Finished difference. Result has 445 places, 283 transitions, 2144 flow [2022-07-21 09:00:41,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2144, PETRI_PLACES=445, PETRI_TRANSITIONS=283} [2022-07-21 09:00:41,129 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 286 predicate places. [2022-07-21 09:00:41,129 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 283 transitions, 2144 flow [2022-07-21 09:00:41,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:41,130 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:41,130 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] [2022-07-21 09:00:41,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-21 09:00:41,130 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash -38731419, now seen corresponding path program 8 times [2022-07-21 09:00:41,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:41,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676736656] [2022-07-21 09:00:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:41,568 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 09:00:41,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:41,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676736656] [2022-07-21 09:00:41,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676736656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:41,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:41,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:41,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297768132] [2022-07-21 09:00:41,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:41,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:41,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:41,570 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:41,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 283 transitions, 2144 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:41,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:41,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:41,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:44,683 INFO L129 PetriNetUnfolder]: 1126/3824 cut-off events. [2022-07-21 09:00:44,683 INFO L130 PetriNetUnfolder]: For 69336/69342 co-relation queries the response was YES. [2022-07-21 09:00:44,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20096 conditions, 3824 events. 1126/3824 cut-off events. For 69336/69342 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 30868 event pairs, 226 based on Foata normal form. 1/3703 useless extension candidates. Maximal degree in co-relation 19927. Up to 834 conditions per place. [2022-07-21 09:00:44,743 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 402 selfloop transitions, 51 changer transitions 43/583 dead transitions. [2022-07-21 09:00:44,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 583 transitions, 7814 flow [2022-07-21 09:00:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:00:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:00:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4037 transitions. [2022-07-21 09:00:44,746 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6553571428571429 [2022-07-21 09:00:44,746 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4037 transitions. [2022-07-21 09:00:44,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4037 transitions. [2022-07-21 09:00:44,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:44,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4037 transitions. [2022-07-21 09:00:44,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.34285714285714) internal successors, (4037), 35 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states 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 09:00:44,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:44,804 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:44,804 INFO L186 Difference]: Start difference. First operand has 445 places, 283 transitions, 2144 flow. Second operand 35 states and 4037 transitions. [2022-07-21 09:00:44,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 583 transitions, 7814 flow [2022-07-21 09:00:45,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 583 transitions, 7097 flow, removed 327 selfloop flow, removed 30 redundant places. [2022-07-21 09:00:45,012 INFO L242 Difference]: Finished difference. Result has 425 places, 305 transitions, 2756 flow [2022-07-21 09:00:45,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2756, PETRI_PLACES=425, PETRI_TRANSITIONS=305} [2022-07-21 09:00:45,013 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 266 predicate places. [2022-07-21 09:00:45,013 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 305 transitions, 2756 flow [2022-07-21 09:00:45,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:45,014 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:45,014 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] [2022-07-21 09:00:45,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-21 09:00:45,014 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:45,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:45,015 INFO L85 PathProgramCache]: Analyzing trace with hash 307693301, now seen corresponding path program 9 times [2022-07-21 09:00:45,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:45,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505447320] [2022-07-21 09:00:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:45,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:45,402 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 09:00:45,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:45,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505447320] [2022-07-21 09:00:45,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505447320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:45,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:45,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:45,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813482130] [2022-07-21 09:00:45,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:45,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:45,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:45,405 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:45,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 305 transitions, 2756 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:45,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:45,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:45,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:50,305 INFO L129 PetriNetUnfolder]: 1340/4426 cut-off events. [2022-07-21 09:00:50,305 INFO L130 PetriNetUnfolder]: For 86189/86196 co-relation queries the response was YES. [2022-07-21 09:00:50,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24583 conditions, 4426 events. 1340/4426 cut-off events. For 86189/86196 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 37216 event pairs, 486 based on Foata normal form. 3/4337 useless extension candidates. Maximal degree in co-relation 24416. Up to 1269 conditions per place. [2022-07-21 09:00:50,367 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 436 selfloop transitions, 26 changer transitions 112/661 dead transitions. [2022-07-21 09:00:50,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 661 transitions, 9118 flow [2022-07-21 09:00:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-21 09:00:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-07-21 09:00:50,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7022 transitions. [2022-07-21 09:00:50,371 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6435117302052786 [2022-07-21 09:00:50,371 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7022 transitions. [2022-07-21 09:00:50,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7022 transitions. [2022-07-21 09:00:50,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:50,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7022 transitions. [2022-07-21 09:00:50,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.25806451612904) internal successors, (7022), 62 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states 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 09:00:50,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states 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 09:00:50,382 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states 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 09:00:50,382 INFO L186 Difference]: Start difference. First operand has 425 places, 305 transitions, 2756 flow. Second operand 62 states and 7022 transitions. [2022-07-21 09:00:50,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 661 transitions, 9118 flow [2022-07-21 09:00:50,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 661 transitions, 8360 flow, removed 264 selfloop flow, removed 20 redundant places. [2022-07-21 09:00:50,662 INFO L242 Difference]: Finished difference. Result has 509 places, 315 transitions, 2808 flow [2022-07-21 09:00:50,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2808, PETRI_PLACES=509, PETRI_TRANSITIONS=315} [2022-07-21 09:00:50,663 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 350 predicate places. [2022-07-21 09:00:50,663 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 315 transitions, 2808 flow [2022-07-21 09:00:50,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:50,664 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:50,664 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] [2022-07-21 09:00:50,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-21 09:00:50,665 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:50,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1216122745, now seen corresponding path program 10 times [2022-07-21 09:00:50,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:50,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039328053] [2022-07-21 09:00:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:50,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:51,080 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 09:00:51,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:51,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039328053] [2022-07-21 09:00:51,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039328053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:51,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:51,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:51,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133284743] [2022-07-21 09:00:51,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:51,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:51,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:51,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:51,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 315 transitions, 2808 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:51,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:51,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:51,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:54,766 INFO L129 PetriNetUnfolder]: 1449/5027 cut-off events. [2022-07-21 09:00:54,766 INFO L130 PetriNetUnfolder]: For 152233/152256 co-relation queries the response was YES. [2022-07-21 09:00:54,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29934 conditions, 5027 events. 1449/5027 cut-off events. For 152233/152256 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 43916 event pairs, 303 based on Foata normal form. 3/4853 useless extension candidates. Maximal degree in co-relation 29722. Up to 1241 conditions per place. [2022-07-21 09:00:54,854 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 423 selfloop transitions, 54 changer transitions 52/616 dead transitions. [2022-07-21 09:00:54,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 616 transitions, 9814 flow [2022-07-21 09:00:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:00:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:00:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4011 transitions. [2022-07-21 09:00:54,856 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6511363636363636 [2022-07-21 09:00:54,856 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4011 transitions. [2022-07-21 09:00:54,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4011 transitions. [2022-07-21 09:00:54,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:54,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4011 transitions. [2022-07-21 09:00:54,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.6) internal successors, (4011), 35 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states 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 09:00:54,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:54,862 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:54,862 INFO L186 Difference]: Start difference. First operand has 509 places, 315 transitions, 2808 flow. Second operand 35 states and 4011 transitions. [2022-07-21 09:00:54,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 616 transitions, 9814 flow [2022-07-21 09:00:55,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 616 transitions, 8434 flow, removed 662 selfloop flow, removed 51 redundant places. [2022-07-21 09:00:55,342 INFO L242 Difference]: Finished difference. Result has 471 places, 341 transitions, 3310 flow [2022-07-21 09:00:55,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3310, PETRI_PLACES=471, PETRI_TRANSITIONS=341} [2022-07-21 09:00:55,343 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 312 predicate places. [2022-07-21 09:00:55,343 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 341 transitions, 3310 flow [2022-07-21 09:00:55,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:55,343 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:55,344 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] [2022-07-21 09:00:55,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-21 09:00:55,344 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:55,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash -505615517, now seen corresponding path program 11 times [2022-07-21 09:00:55,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:55,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067739221] [2022-07-21 09:00:55,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:55,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:55,769 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 09:00:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:55,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067739221] [2022-07-21 09:00:55,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067739221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:55,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:55,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:00:55,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493695629] [2022-07-21 09:00:55,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:55,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:00:55,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:55,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:00:55,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:00:55,772 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:00:55,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 341 transitions, 3310 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:55,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:55,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:00:55,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:59,467 INFO L129 PetriNetUnfolder]: 1463/4857 cut-off events. [2022-07-21 09:00:59,467 INFO L130 PetriNetUnfolder]: For 102935/102946 co-relation queries the response was YES. [2022-07-21 09:00:59,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27672 conditions, 4857 events. 1463/4857 cut-off events. For 102935/102946 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 41690 event pairs, 431 based on Foata normal form. 5/4780 useless extension candidates. Maximal degree in co-relation 27481. Up to 1500 conditions per place. [2022-07-21 09:00:59,544 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 435 selfloop transitions, 47 changer transitions 36/605 dead transitions. [2022-07-21 09:00:59,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 605 transitions, 8032 flow [2022-07-21 09:00:59,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:00:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:00:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4036 transitions. [2022-07-21 09:00:59,548 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6551948051948052 [2022-07-21 09:00:59,548 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4036 transitions. [2022-07-21 09:00:59,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4036 transitions. [2022-07-21 09:00:59,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:59,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4036 transitions. [2022-07-21 09:00:59,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.31428571428572) internal successors, (4036), 35 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states 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 09:00:59,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:59,554 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:00:59,554 INFO L186 Difference]: Start difference. First operand has 471 places, 341 transitions, 3310 flow. Second operand 35 states and 4036 transitions. [2022-07-21 09:00:59,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 605 transitions, 8032 flow [2022-07-21 09:00:59,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 605 transitions, 7389 flow, removed 251 selfloop flow, removed 19 redundant places. [2022-07-21 09:00:59,956 INFO L242 Difference]: Finished difference. Result has 494 places, 361 transitions, 3627 flow [2022-07-21 09:00:59,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3627, PETRI_PLACES=494, PETRI_TRANSITIONS=361} [2022-07-21 09:00:59,957 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 335 predicate places. [2022-07-21 09:00:59,957 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 361 transitions, 3627 flow [2022-07-21 09:00:59,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:00:59,958 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:59,958 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] [2022-07-21 09:00:59,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-21 09:00:59,958 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:59,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1590040421, now seen corresponding path program 12 times [2022-07-21 09:00:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:59,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297329190] [2022-07-21 09:00:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:00,381 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 09:01:00,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:00,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297329190] [2022-07-21 09:01:00,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297329190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:00,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:00,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:01:00,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621154608] [2022-07-21 09:01:00,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:00,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:01:00,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:00,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:01:00,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:01:00,384 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:01:00,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 361 transitions, 3627 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:00,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:00,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:01:00,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:04,365 INFO L129 PetriNetUnfolder]: 1625/5573 cut-off events. [2022-07-21 09:01:04,366 INFO L130 PetriNetUnfolder]: For 119134/119157 co-relation queries the response was YES. [2022-07-21 09:01:04,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31140 conditions, 5573 events. 1625/5573 cut-off events. For 119134/119157 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 49543 event pairs, 414 based on Foata normal form. 3/5385 useless extension candidates. Maximal degree in co-relation 30940. Up to 1617 conditions per place. [2022-07-21 09:01:04,460 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 463 selfloop transitions, 51 changer transitions 52/653 dead transitions. [2022-07-21 09:01:04,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 653 transitions, 9676 flow [2022-07-21 09:01:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:01:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:01:04,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4027 transitions. [2022-07-21 09:01:04,463 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6537337662337662 [2022-07-21 09:01:04,463 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4027 transitions. [2022-07-21 09:01:04,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4027 transitions. [2022-07-21 09:01:04,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:04,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4027 transitions. [2022-07-21 09:01:04,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.05714285714286) internal successors, (4027), 35 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states 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 09:01:04,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:04,469 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:04,469 INFO L186 Difference]: Start difference. First operand has 494 places, 361 transitions, 3627 flow. Second operand 35 states and 4027 transitions. [2022-07-21 09:01:04,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 653 transitions, 9676 flow [2022-07-21 09:01:05,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 653 transitions, 9044 flow, removed 245 selfloop flow, removed 21 redundant places. [2022-07-21 09:01:05,025 INFO L242 Difference]: Finished difference. Result has 521 places, 388 transitions, 3912 flow [2022-07-21 09:01:05,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3912, PETRI_PLACES=521, PETRI_TRANSITIONS=388} [2022-07-21 09:01:05,026 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 362 predicate places. [2022-07-21 09:01:05,026 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 388 transitions, 3912 flow [2022-07-21 09:01:05,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:05,026 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:05,026 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] [2022-07-21 09:01:05,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-21 09:01:05,027 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:05,027 INFO L85 PathProgramCache]: Analyzing trace with hash 296849815, now seen corresponding path program 13 times [2022-07-21 09:01:05,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:05,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919790308] [2022-07-21 09:01:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:05,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:05,414 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 09:01:05,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:05,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919790308] [2022-07-21 09:01:05,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919790308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:05,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:05,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:01:05,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731148288] [2022-07-21 09:01:05,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:05,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:01:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:01:05,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:01:05,417 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:01:05,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 388 transitions, 3912 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:05,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:05,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:01:05,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:09,562 INFO L129 PetriNetUnfolder]: 1689/5606 cut-off events. [2022-07-21 09:01:09,562 INFO L130 PetriNetUnfolder]: For 140229/140241 co-relation queries the response was YES. [2022-07-21 09:01:09,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33815 conditions, 5606 events. 1689/5606 cut-off events. For 140229/140241 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49723 event pairs, 495 based on Foata normal form. 3/5515 useless extension candidates. Maximal degree in co-relation 33599. Up to 1783 conditions per place. [2022-07-21 09:01:09,661 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 503 selfloop transitions, 51 changer transitions 36/677 dead transitions. [2022-07-21 09:01:09,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 677 transitions, 9519 flow [2022-07-21 09:01:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:01:09,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:01:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4048 transitions. [2022-07-21 09:01:09,663 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2022-07-21 09:01:09,663 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4048 transitions. [2022-07-21 09:01:09,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4048 transitions. [2022-07-21 09:01:09,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:09,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4048 transitions. [2022-07-21 09:01:09,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.65714285714286) internal successors, (4048), 35 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states 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 09:01:09,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:09,669 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:09,669 INFO L186 Difference]: Start difference. First operand has 521 places, 388 transitions, 3912 flow. Second operand 35 states and 4048 transitions. [2022-07-21 09:01:09,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 677 transitions, 9519 flow [2022-07-21 09:01:10,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 677 transitions, 8844 flow, removed 291 selfloop flow, removed 19 redundant places. [2022-07-21 09:01:10,347 INFO L242 Difference]: Finished difference. Result has 545 places, 410 transitions, 4309 flow [2022-07-21 09:01:10,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4309, PETRI_PLACES=545, PETRI_TRANSITIONS=410} [2022-07-21 09:01:10,348 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 386 predicate places. [2022-07-21 09:01:10,348 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 410 transitions, 4309 flow [2022-07-21 09:01:10,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:10,348 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:10,348 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] [2022-07-21 09:01:10,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-21 09:01:10,349 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1909176201, now seen corresponding path program 14 times [2022-07-21 09:01:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:10,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705062355] [2022-07-21 09:01:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:10,746 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 09:01:10,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:10,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705062355] [2022-07-21 09:01:10,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705062355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:10,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:10,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:01:10,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770074175] [2022-07-21 09:01:10,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:10,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:01:10,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:10,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:01:10,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:01:10,749 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:01:10,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 410 transitions, 4309 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:10,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:10,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:01:10,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:14,981 INFO L129 PetriNetUnfolder]: 1809/5984 cut-off events. [2022-07-21 09:01:14,982 INFO L130 PetriNetUnfolder]: For 164457/164477 co-relation queries the response was YES. [2022-07-21 09:01:15,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37477 conditions, 5984 events. 1809/5984 cut-off events. For 164457/164477 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 54046 event pairs, 579 based on Foata normal form. 3/5796 useless extension candidates. Maximal degree in co-relation 37252. Up to 1460 conditions per place. [2022-07-21 09:01:15,099 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 544 selfloop transitions, 61 changer transitions 47/739 dead transitions. [2022-07-21 09:01:15,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 739 transitions, 11826 flow [2022-07-21 09:01:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:01:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:01:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4039 transitions. [2022-07-21 09:01:15,102 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6556818181818181 [2022-07-21 09:01:15,102 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4039 transitions. [2022-07-21 09:01:15,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4039 transitions. [2022-07-21 09:01:15,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:15,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4039 transitions. [2022-07-21 09:01:15,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.4) internal successors, (4039), 35 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states 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 09:01:15,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:15,108 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:15,108 INFO L186 Difference]: Start difference. First operand has 545 places, 410 transitions, 4309 flow. Second operand 35 states and 4039 transitions. [2022-07-21 09:01:15,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 739 transitions, 11826 flow [2022-07-21 09:01:15,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 739 transitions, 11178 flow, removed 265 selfloop flow, removed 20 redundant places. [2022-07-21 09:01:15,811 INFO L242 Difference]: Finished difference. Result has 570 places, 434 transitions, 4770 flow [2022-07-21 09:01:15,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3800, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4770, PETRI_PLACES=570, PETRI_TRANSITIONS=434} [2022-07-21 09:01:15,812 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 411 predicate places. [2022-07-21 09:01:15,812 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 434 transitions, 4770 flow [2022-07-21 09:01:15,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:15,813 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:15,813 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:01:15,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-21 09:01:15,813 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash -375152665, now seen corresponding path program 15 times [2022-07-21 09:01:15,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:15,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985377841] [2022-07-21 09:01:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:15,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:16,236 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 09:01:16,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:16,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985377841] [2022-07-21 09:01:16,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985377841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:16,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:16,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:01:16,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710760483] [2022-07-21 09:01:16,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:01:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:16,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:01:16,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:01:16,238 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:01:16,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 434 transitions, 4770 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:16,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:16,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:01:16,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:20,443 INFO L129 PetriNetUnfolder]: 1915/6243 cut-off events. [2022-07-21 09:01:20,443 INFO L130 PetriNetUnfolder]: For 197925/197940 co-relation queries the response was YES. [2022-07-21 09:01:20,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41423 conditions, 6243 events. 1915/6243 cut-off events. For 197925/197940 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 56825 event pairs, 571 based on Foata normal form. 5/6134 useless extension candidates. Maximal degree in co-relation 41185. Up to 2012 conditions per place. [2022-07-21 09:01:20,587 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 552 selfloop transitions, 54 changer transitions 36/729 dead transitions. [2022-07-21 09:01:20,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 729 transitions, 11109 flow [2022-07-21 09:01:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:01:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:01:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4050 transitions. [2022-07-21 09:01:20,590 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6574675324675324 [2022-07-21 09:01:20,590 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4050 transitions. [2022-07-21 09:01:20,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4050 transitions. [2022-07-21 09:01:20,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:20,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4050 transitions. [2022-07-21 09:01:20,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.71428571428571) internal successors, (4050), 35 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states 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 09:01:20,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:20,596 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:20,597 INFO L186 Difference]: Start difference. First operand has 570 places, 434 transitions, 4770 flow. Second operand 35 states and 4050 transitions. [2022-07-21 09:01:20,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 729 transitions, 11109 flow [2022-07-21 09:01:21,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 729 transitions, 10303 flow, removed 337 selfloop flow, removed 20 redundant places. [2022-07-21 09:01:21,765 INFO L242 Difference]: Finished difference. Result has 595 places, 458 transitions, 5186 flow [2022-07-21 09:01:21,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5186, PETRI_PLACES=595, PETRI_TRANSITIONS=458} [2022-07-21 09:01:21,766 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 436 predicate places. [2022-07-21 09:01:21,766 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 458 transitions, 5186 flow [2022-07-21 09:01:21,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:21,766 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:21,767 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] [2022-07-21 09:01:21,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-21 09:01:21,767 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:21,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:21,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1705616637, now seen corresponding path program 16 times [2022-07-21 09:01:21,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:21,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088830596] [2022-07-21 09:01:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:21,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:22,199 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 09:01:22,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:22,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088830596] [2022-07-21 09:01:22,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088830596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:22,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:22,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:01:22,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619249566] [2022-07-21 09:01:22,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:22,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:01:22,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:22,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:01:22,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:01:22,201 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:01:22,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 458 transitions, 5186 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:22,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:22,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:01:22,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:26,856 INFO L129 PetriNetUnfolder]: 2128/7084 cut-off events. [2022-07-21 09:01:26,856 INFO L130 PetriNetUnfolder]: For 222670/222703 co-relation queries the response was YES. [2022-07-21 09:01:26,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46069 conditions, 7084 events. 2128/7084 cut-off events. For 222670/222703 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 66700 event pairs, 684 based on Foata normal form. 3/6846 useless extension candidates. Maximal degree in co-relation 45819. Up to 2645 conditions per place. [2022-07-21 09:01:27,004 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 562 selfloop transitions, 52 changer transitions 52/753 dead transitions. [2022-07-21 09:01:27,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 753 transitions, 12037 flow [2022-07-21 09:01:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:01:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:01:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4043 transitions. [2022-07-21 09:01:27,007 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6563311688311688 [2022-07-21 09:01:27,007 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4043 transitions. [2022-07-21 09:01:27,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4043 transitions. [2022-07-21 09:01:27,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:27,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4043 transitions. [2022-07-21 09:01:27,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.51428571428572) internal successors, (4043), 35 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states 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 09:01:27,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:27,013 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:27,013 INFO L186 Difference]: Start difference. First operand has 595 places, 458 transitions, 5186 flow. Second operand 35 states and 4043 transitions. [2022-07-21 09:01:27,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 753 transitions, 12037 flow [2022-07-21 09:01:28,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 753 transitions, 11363 flow, removed 284 selfloop flow, removed 20 redundant places. [2022-07-21 09:01:28,251 INFO L242 Difference]: Finished difference. Result has 624 places, 486 transitions, 5518 flow [2022-07-21 09:01:28,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4623, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5518, PETRI_PLACES=624, PETRI_TRANSITIONS=486} [2022-07-21 09:01:28,252 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 465 predicate places. [2022-07-21 09:01:28,252 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 486 transitions, 5518 flow [2022-07-21 09:01:28,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:28,252 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:28,252 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] [2022-07-21 09:01:28,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-21 09:01:28,252 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1903491923, now seen corresponding path program 17 times [2022-07-21 09:01:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:28,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154858391] [2022-07-21 09:01:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:28,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:28,623 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 09:01:28,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:28,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154858391] [2022-07-21 09:01:28,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154858391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:28,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:28,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:01:28,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614763707] [2022-07-21 09:01:28,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:28,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:01:28,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:28,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:01:28,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:01:28,625 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:01:28,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 486 transitions, 5518 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:28,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:28,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:01:28,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:33,713 INFO L129 PetriNetUnfolder]: 2247/7397 cut-off events. [2022-07-21 09:01:33,713 INFO L130 PetriNetUnfolder]: For 260585/260605 co-relation queries the response was YES. [2022-07-21 09:01:33,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50767 conditions, 7397 events. 2247/7397 cut-off events. For 260585/260605 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 70514 event pairs, 699 based on Foata normal form. 5/7267 useless extension candidates. Maximal degree in co-relation 50501. Up to 2373 conditions per place. [2022-07-21 09:01:33,922 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 628 selfloop transitions, 57 changer transitions 36/808 dead transitions. [2022-07-21 09:01:33,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 808 transitions, 12562 flow [2022-07-21 09:01:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:01:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:01:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4065 transitions. [2022-07-21 09:01:33,925 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6599025974025974 [2022-07-21 09:01:33,925 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4065 transitions. [2022-07-21 09:01:33,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4065 transitions. [2022-07-21 09:01:33,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:33,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4065 transitions. [2022-07-21 09:01:33,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.14285714285714) internal successors, (4065), 35 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states 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 09:01:33,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:33,931 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:33,931 INFO L186 Difference]: Start difference. First operand has 624 places, 486 transitions, 5518 flow. Second operand 35 states and 4065 transitions. [2022-07-21 09:01:33,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 808 transitions, 12562 flow [2022-07-21 09:01:35,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 808 transitions, 11798 flow, removed 351 selfloop flow, removed 18 redundant places. [2022-07-21 09:01:35,405 INFO L242 Difference]: Finished difference. Result has 653 places, 511 transitions, 6055 flow [2022-07-21 09:01:35,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6055, PETRI_PLACES=653, PETRI_TRANSITIONS=511} [2022-07-21 09:01:35,406 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 494 predicate places. [2022-07-21 09:01:35,406 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 511 transitions, 6055 flow [2022-07-21 09:01:35,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:35,407 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:35,407 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] [2022-07-21 09:01:35,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-21 09:01:35,407 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1163892451, now seen corresponding path program 18 times [2022-07-21 09:01:35,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:35,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583776116] [2022-07-21 09:01:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:35,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:35,786 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 09:01:35,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:35,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583776116] [2022-07-21 09:01:35,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583776116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:35,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:35,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:01:35,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100240289] [2022-07-21 09:01:35,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:35,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:01:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:35,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:01:35,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:01:35,789 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:01:35,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 511 transitions, 6055 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:35,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:35,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:01:35,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:41,327 INFO L129 PetriNetUnfolder]: 2382/7881 cut-off events. [2022-07-21 09:01:41,328 INFO L130 PetriNetUnfolder]: For 303640/303672 co-relation queries the response was YES. [2022-07-21 09:01:41,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55877 conditions, 7881 events. 2382/7881 cut-off events. For 303640/303672 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 76270 event pairs, 891 based on Foata normal form. 5/7612 useless extension candidates. Maximal degree in co-relation 55598. Up to 1903 conditions per place. [2022-07-21 09:01:41,509 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 654 selfloop transitions, 60 changer transitions 47/848 dead transitions. [2022-07-21 09:01:41,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 848 transitions, 14770 flow [2022-07-21 09:01:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:01:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:01:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4053 transitions. [2022-07-21 09:01:41,512 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6579545454545455 [2022-07-21 09:01:41,512 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4053 transitions. [2022-07-21 09:01:41,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4053 transitions. [2022-07-21 09:01:41,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:41,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4053 transitions. [2022-07-21 09:01:41,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.8) internal successors, (4053), 35 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states 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 09:01:41,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:41,517 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:41,517 INFO L186 Difference]: Start difference. First operand has 653 places, 511 transitions, 6055 flow. Second operand 35 states and 4053 transitions. [2022-07-21 09:01:41,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 848 transitions, 14770 flow [2022-07-21 09:01:43,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 848 transitions, 14000 flow, removed 342 selfloop flow, removed 20 redundant places. [2022-07-21 09:01:43,017 INFO L242 Difference]: Finished difference. Result has 680 places, 536 transitions, 6568 flow [2022-07-21 09:01:43,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6568, PETRI_PLACES=680, PETRI_TRANSITIONS=536} [2022-07-21 09:01:43,017 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 521 predicate places. [2022-07-21 09:01:43,017 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 536 transitions, 6568 flow [2022-07-21 09:01:43,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:43,018 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:43,018 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] [2022-07-21 09:01:43,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-21 09:01:43,018 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash -115917063, now seen corresponding path program 19 times [2022-07-21 09:01:43,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:43,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42566569] [2022-07-21 09:01:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:43,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:43,398 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 09:01:43,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:43,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42566569] [2022-07-21 09:01:43,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42566569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:43,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:43,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:01:43,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786095743] [2022-07-21 09:01:43,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:43,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:01:43,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:01:43,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:01:43,404 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:01:43,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 536 transitions, 6568 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:43,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:43,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:01:43,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:48,735 INFO L129 PetriNetUnfolder]: 2394/7884 cut-off events. [2022-07-21 09:01:48,736 INFO L130 PetriNetUnfolder]: For 334008/334034 co-relation queries the response was YES. [2022-07-21 09:01:48,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57840 conditions, 7884 events. 2394/7884 cut-off events. For 334008/334034 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 76331 event pairs, 790 based on Foata normal form. 5/7723 useless extension candidates. Maximal degree in co-relation 57548. Up to 2654 conditions per place. [2022-07-21 09:01:48,924 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 658 selfloop transitions, 62 changer transitions 44/851 dead transitions. [2022-07-21 09:01:48,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 851 transitions, 14134 flow [2022-07-21 09:01:48,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:01:48,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:01:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4033 transitions. [2022-07-21 09:01:48,927 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6547077922077922 [2022-07-21 09:01:48,927 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4033 transitions. [2022-07-21 09:01:48,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4033 transitions. [2022-07-21 09:01:48,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:48,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4033 transitions. [2022-07-21 09:01:48,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.22857142857143) internal successors, (4033), 35 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states 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 09:01:48,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:48,932 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states 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 09:01:48,932 INFO L186 Difference]: Start difference. First operand has 680 places, 536 transitions, 6568 flow. Second operand 35 states and 4033 transitions. [2022-07-21 09:01:48,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 851 transitions, 14134 flow [2022-07-21 09:01:51,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 851 transitions, 13177 flow, removed 434 selfloop flow, removed 20 redundant places. [2022-07-21 09:01:51,045 INFO L242 Difference]: Finished difference. Result has 706 places, 559 transitions, 6901 flow [2022-07-21 09:01:51,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6901, PETRI_PLACES=706, PETRI_TRANSITIONS=559} [2022-07-21 09:01:51,046 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 547 predicate places. [2022-07-21 09:01:51,046 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 559 transitions, 6901 flow [2022-07-21 09:01:51,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:51,046 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:51,047 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] [2022-07-21 09:01:51,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-21 09:01:51,047 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:01:51,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash 920759187, now seen corresponding path program 20 times [2022-07-21 09:01:51,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:51,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157004509] [2022-07-21 09:01:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:01:51,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:51,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157004509] [2022-07-21 09:01:51,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157004509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:51,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:51,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:01:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893169120] [2022-07-21 09:01:51,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:51,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:01:51,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:51,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:01:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:01:51,546 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:01:51,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 559 transitions, 6901 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:01:51,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:51,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:01:51,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:59,003 INFO L129 PetriNetUnfolder]: 2729/9006 cut-off events. [2022-07-21 09:01:59,003 INFO L130 PetriNetUnfolder]: For 423134/423184 co-relation queries the response was YES. [2022-07-21 09:01:59,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69537 conditions, 9006 events. 2729/9006 cut-off events. For 423134/423184 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 89268 event pairs, 1048 based on Foata normal form. 5/8726 useless extension candidates. Maximal degree in co-relation 69233. Up to 2071 conditions per place. [2022-07-21 09:01:59,229 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 735 selfloop transitions, 47 changer transitions 77/946 dead transitions. [2022-07-21 09:01:59,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 946 transitions, 17553 flow [2022-07-21 09:01:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-21 09:01:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-21 09:01:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6054 transitions. [2022-07-21 09:01:59,232 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6490137221269296 [2022-07-21 09:01:59,232 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6054 transitions. [2022-07-21 09:01:59,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6054 transitions. [2022-07-21 09:01:59,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:59,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6054 transitions. [2022-07-21 09:01:59,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.22641509433963) internal successors, (6054), 53 states have internal predecessors, (6054), 0 states have call successors, (0), 0 states 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 09:01:59,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states 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 09:01:59,240 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states 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 09:01:59,240 INFO L186 Difference]: Start difference. First operand has 706 places, 559 transitions, 6901 flow. Second operand 53 states and 6054 transitions. [2022-07-21 09:01:59,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 946 transitions, 17553 flow [2022-07-21 09:02:01,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 946 transitions, 16643 flow, removed 416 selfloop flow, removed 18 redundant places. [2022-07-21 09:02:01,602 INFO L242 Difference]: Finished difference. Result has 773 places, 571 transitions, 6882 flow [2022-07-21 09:02:01,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6882, PETRI_PLACES=773, PETRI_TRANSITIONS=571} [2022-07-21 09:02:01,603 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 614 predicate places. [2022-07-21 09:02:01,603 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 571 transitions, 6882 flow [2022-07-21 09:02:01,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:02:01,603 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:01,603 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:01,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-21 09:02:01,604 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:02:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2096326171, now seen corresponding path program 21 times [2022-07-21 09:02:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:01,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748710123] [2022-07-21 09:02:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:01,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:02,018 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 09:02:02,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:02,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748710123] [2022-07-21 09:02:02,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748710123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:02:02,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:02:02,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 09:02:02,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941506326] [2022-07-21 09:02:02,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:02,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:02:02,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:02:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:02:02,020 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-21 09:02:02,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 571 transitions, 6882 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 09:02:02,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:02,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-21 09:02:02,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:08,818 INFO L129 PetriNetUnfolder]: 2753/9199 cut-off events. [2022-07-21 09:02:08,818 INFO L130 PetriNetUnfolder]: For 557859/557887 co-relation queries the response was YES. [2022-07-21 09:02:09,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76499 conditions, 9199 events. 2753/9199 cut-off events. For 557859/557887 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 92416 event pairs, 894 based on Foata normal form. 9/9028 useless extension candidates. Maximal degree in co-relation 76161. Up to 3379 conditions per place. [2022-07-21 09:02:09,098 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 684 selfloop transitions, 72 changer transitions 50/893 dead transitions. [2022-07-21 09:02:09,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 893 transitions, 15435 flow [2022-07-21 09:02:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-21 09:02:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-07-21 09:02:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4691 transitions. [2022-07-21 09:02:09,101 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6500831485587583 [2022-07-21 09:02:09,101 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4691 transitions. [2022-07-21 09:02:09,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4691 transitions. [2022-07-21 09:02:09,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:09,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4691 transitions. [2022-07-21 09:02:09,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 114.41463414634147) internal successors, (4691), 41 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states 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 09:02:09,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states 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 09:02:09,109 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states 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 09:02:09,109 INFO L186 Difference]: Start difference. First operand has 773 places, 571 transitions, 6882 flow. Second operand 41 states and 4691 transitions. [2022-07-21 09:02:09,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 777 places, 893 transitions, 15435 flow